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Wyszukujesz frazę "performance analysis" wg kryterium: Temat


Tytuł:
Measurement of Lecturer Satisfaction
Autorzy:
Aprillia, Ariesya
Setiawan, Rony
Magdalena, Nonie
Powiązania:
https://bibliotekanauki.pl/articles/1963532.pdf
Data publikacji:
2020-06-30
Wydawca:
Wydawnictwo Adam Marszałek
Tematy:
importance performance analysis
lecturer satisfaction
Opis:
The aim of this research is to analyze the extent of lecturers’ satisfaction with regard to the gap between the satisfaction experienced and what is expected. The sample in this study were lecturers at one of a Private Higher Education institution in Bandung, Indonesia. Sampling was done using simple random sampling techniques. This study uses the Focus Group Discussion method. The instrument test uses validity and reliability tests, and the data analysis used in this study is Importance and Performance Analysis. Referring to the results of data processing, it was found that there were 4 out of 27 indicators in Quadrant I where the lecturer felt that the existence of indicators was considered very important, while the level of performance was still not satisfactory. Indicators that are considered not yet optimum are the provision of communication channels between leaders and lecturers, daycare facilities, clean eating places/ food courts, and resources for research that is not yet optimum. The outcomes of this research are considered to give positive feedback and positive feed forward to the Private Higher Education regarding service programs oriented to employees.
Źródło:
The New Educational Review; 2020, 60; 178-190
1732-6729
Pojawia się w:
The New Educational Review
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Evaluation of Performance and Efficiency of Polish Open-End Mutual Funds under High Volatility Environment in Financial Markets
Autorzy:
Lisak, Filip
Powiązania:
https://bibliotekanauki.pl/articles/18105074.pdf
Data publikacji:
2023
Wydawca:
Uniwersytet Marii Curie-Skłodowskiej. Wydawnictwo Uniwersytetu Marii Curie-Skłodowskiej
Tematy:
investment funds
performance analysis
funds' performance indicators
investment
volatility
Opis:
Theoretical background: Retail investors in the financial market have nowadays access to a wide range of investment products. One of the types of such products are open-end investment funds, which by design are asset masses managed by professional entities. Open-end investment funds became one of the more popular financial instruments that retail customers purchase. Purpose of the article: This article aims at determining the efficiency of mutual funds as measured by the rate of return. An important point of the study is to determine whether funds with lower total risk as measured by standard deviation achieved lower losses. Research methods: The research method is an analysis of performance of twenty Polish open-ended mutual funds in three different time horizons, by using classic mutual fund performance measures adjusted for negative returns, i.e. Sharpe, Treynor and Jensen alpha indicators as well as the Israelsen and Treynor ratios adjusted for negative return. Main findings: It has been observed that the high volatility in the financial market had a direct negative impact on the returns of these funds. When comparing the Treynor ratio adjusted for negative returns values it appears that some of the analysed equity funds performed better than, for example, stable growth funds. In case of high volatility in the stock market, both in the long and short term, the analysed stable growth funds did not bring more value to investors in relation to the total risk incurred than balanced or even equity funds, which is particularly noticeable in the case of three-year and annual results. This is because asset diversification did not fully work in the high market volatility seen since the beginning of 2022 mostly due to falling prices of debt securities caused by interest rate increases. The article also contributes to the interpretation of Sharpe and Israelsen ratios in case of similar negative rates of return and different volatility measured, because the Israelsen ratio may not be the best to compare such funds as it prioritizes the funds with lower risk and does not consider relation of risk to return.
Źródło:
Annales Universitatis Mariae Curie-Skłodowska, sectio H – Oeconomia; 2022, 56, 4; 63-82
0459-9586
2449-8513
Pojawia się w:
Annales Universitatis Mariae Curie-Skłodowska, sectio H – Oeconomia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A Performance Analysis of IEEE 802.11ax Networks
Autorzy:
Natkaniec, Marek
Prasnal, Łukasz
Szymakowski, Michał
Powiązania:
https://bibliotekanauki.pl/articles/227270.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
802.11ax
dense networks
performance analysis
Opis:
The paper is focused on the forthcoming IEEE 802.11ax standard and its influence on Wi-Fi networks performance. The most important features dedicated to improve transmission effectiveness are presented. Furthermore, the simulation results of a new transmission modes are described. The comparison with the legacy IEEE 802.11n/ac standards shows that even partial implementation of a new standard should bring significant throughput improvements.
Źródło:
International Journal of Electronics and Telecommunications; 2020, 66, 1; 225-230
2300-1933
Pojawia się w:
International Journal of Electronics and Telecommunications
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analiza wydajności agentów podejmujących decyzje kupna–sprzedaży w systemie wieloagentowym a-Trader
Performance analysis of the buy-sell decision agents’ in a-Trader system
Autorzy:
Korczak, Jerzy
Hernes, Marcin
Bac, Maciej
Powiązania:
https://bibliotekanauki.pl/articles/432147.pdf
Data publikacji:
2014
Wydawca:
Wydawnictwo Uniwersytetu Ekonomicznego we Wrocławiu
Tematy:
multiagent systems
agents’ performance analysis
investment decisions
Opis:
The article presents the performance analisys issues of buy-sell decisions agents’ in a-Trader system. The system allows for supporting of investment decision on FOREX market. The first part of the article contains a description of a-Trader system. Next, the algorithms of the selected buy-sell decision agents are presented. The evaluation function of agents’ performance is elaborated, and the manner of performance analisys executing is presented in the final part of the article.
Źródło:
Informatyka Ekonomiczna; 2014, 1(31); 77-90
1507-3858
Pojawia się w:
Informatyka Ekonomiczna
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Modulo N Backoff Scheme for Effective QoS Differentiation and Increased Bandwidth Utilization in IEEE 802.11 Networks
Autorzy:
Janczar, T.
Konorski, J.
Wodniak, J.
Pawlikowski, K.
Powiązania:
https://bibliotekanauki.pl/articles/308888.pdf
Data publikacji:
2009
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Tematy:
channel access
MAC
performance analysis
random backoff
WLAN
Opis:
The paper presents a new modulo N channel access scheme for wireless local area networks (WLANs). The novel solution derives from the distributed coordination function (DCF) of the IEEE 802.11 standard, further elaborated as enhanced distribution channel access (EDCA) by the 802.11e draft specification. The main innovation concerns improvement of the binary exponential backoff scheme used for collision avoidance in 802.11 networks. The most appealing feature of the new modulo N backoff scheme is that it outperforms the original 802.11 solution in terms of channel utilization ratio under any traffic conditions. Furthermore, the modulo N proposal can be naturally augmented with QoS differentiation mechanisms like 802.11e extensions. The prioritized modulo N scheme achieves better throughput-delay characteristics for multimedia traffic when compared with the original 802.11e proposal. At the same time, the new solution retains backward compatibility and includes all features which have made IEEE 802.11 networks extremely popular nowadays.
Źródło:
Journal of Telecommunications and Information Technology; 2009, 2; 41-47
1509-4553
1899-8852
Pojawia się w:
Journal of Telecommunications and Information Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis of the efficiency of complex systems
Autorzy:
Antkowiak, Aneta
Powiązania:
https://bibliotekanauki.pl/articles/747836.pdf
Data publikacji:
2017
Wydawca:
Polskie Towarzystwo Matematyczne
Tematy:
performance analysis
complex system
continuous-time Markov chains
Opis:
The subject of considerations shall be mathematical models describing the fluctuation of states of complex systems. The purpose of this work is to give a defined system (considering failures, activation process, and a possibility of repair), its description along with the basic indications of multi-level system analysis, and in particular the definition of steady-state probabilities and performance analysis. The modeling tool here are continuous-time Markov chains with finite number of states
Źródło:
Mathematica Applicanda; 2017, 45, 2
1730-2668
2299-4009
Pojawia się w:
Mathematica Applicanda
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A study of digital transformation and MSMEs performance from a spatial perspective: Evidence from China
Autorzy:
Zheng, Bing
Yuan, Yuqing
Li, Huizhuan
Jiang, Yihan
Powiązania:
https://bibliotekanauki.pl/articles/18721474.pdf
Data publikacji:
2023
Wydawca:
Uniwersytet Ekonomiczny w Katowicach
Tematy:
digital transformation
double sampling frame
performance analysis
MSMEs
Opis:
Aim/purpose – Not only have micro, small, and medium enterprises (MSMEs) been regarded as a driving force of the national economy, but they have also become important in promoting innovation and entrepreneurship. In general, today’s MSMEs face problems, such as high business costs, insufficient innovation, and inadequate management capabilities, that have all forced the digital transformation of MSMEs. However, in existing studies, the impact of digital transformation on performance is controversial, and the subjects are generally listed companies. In this paper, we have decided to use micro business survey data and analyze them from a spatial perspective to explore how MSMEs’ digital transformation plays a role in influencing performance and the path of its effect. Design/methodology/approach – We use a sampling method with a dual directory-regional sampling frame to investigate MSMEs in Ningbo City, Zhejiang Province, China and then delve into the impact of digital transformation on enterprise performance from a spatial perspective by the spatial weighted logit model. Findings – Hierarchical analysis shows that there is a large room for improvement in the Digital transformation of enterprises. The digitalization level of an enterprise has a positive impact on performance. While from a spatial perspective, the digitalization level of neighboring enterprises has a negative impact on the performance of the enterprise. Path analysis shows that the digital transformation of enterprises can increase innovation, reduce costs, and improve the performance of enterprises. Originality/value – We provide an empirical basis for vigorously promoting the digital transformation of enterprises, jointly building digital parks, and improving enterprise performance by reducing costs and improving efficiency. At the same time, it provides relevant suggestions for digital transformation for manufacturing MSMEs that are hesitant to see or are at a loss in the digital transformation and helps manufacturing MSMEs to achieve cost reduction and increase efficiency.
Źródło:
Journal of Economics and Management; 2023, 45; 319-343
1732-1948
Pojawia się w:
Journal of Economics and Management
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Match Characteristics and Rally Pace of Male Tennis Matches in Three Grand Slam Tournaments
Autorzy:
Carboch, Jan
Siman, Jakub
Sklenarik, Michal
Blau, Matej
Powiązania:
https://bibliotekanauki.pl/articles/1921997.pdf
Data publikacji:
2019-03-06
Wydawca:
PPHU Projack Jacek Wąsik
Tematy:
intensity
performance analysis
professional tennis
surface
tennis court
Opis:
A tennis player has a very limited time to hit an incoming ball; however, the ball delivery time is affected by playing on different surfaces. Consequently, the playing surface can affect also other match characteristics as players can reach more incoming balls or can move on the court with different intensity (cover more distance). Aim of Study: The aim is to analyze the rally pace characteristics and the frequency of rally shots in men's matches in the Australian Open, French Open and Wimbledon in 2017. Material and Methods: We analyzed 24 male matches in the Australian Open, French Open and Wimbledon in 2017. Analysis of variance including post-hoc tests and Cohen d were used to compare the point duration, number of rally shots, time between the points, rally pace and work to rest ratio among these tournaments. Results: The rally pace (mean ball flight time between the opponents) was the fastest in the Australian Open (1.22 s) and was significantly faster (p=0.003) compared to the French Open (1.35 s). The rally pace in the Wimbledon reached 1.27 s and Cohen d showed large effect between the rally pace in the Wimbledon and French Open or moderate effect between the Australian Open and Wimbledon. There were other differences among the tournaments, but the lowest number of rally shots (4.07), point duration (5.30 s) and time between points (18.82 s) was reached in the Wimbledon. More than 50 % of all points were finished within the first four shots (most in the Wimbledon - 66%). Conclusion: These findings show and endorse the impact of surface differences on the game performance in professional tennis and can be used to shape specific training sessions on different surfaces.
Źródło:
Physical Activity Review; 2019, 7; 49-56
2300-5076
Pojawia się w:
Physical Activity Review
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Role convention bureau w świetle badań empirycznych
Autorzy:
Piechota, Natalia
Powiązania:
https://bibliotekanauki.pl/articles/581486.pdf
Data publikacji:
2017
Wydawca:
Wydawnictwo Uniwersytetu Ekonomicznego we Wrocławiu
Tematy:
convention bureau
CVB
branża spotkań
Importance-Performance Analysis (IPA)
Opis:
Celem artykułu jest określenie, jakie role odgrywają convention bureaux w lokalnej branży spotkań, w podziale na instytucje funkcjonujące w miastach o różnej liczbie spotkań międzynarodowych (wg rankingu ICCA). Na podstawie analizy literatury stwierdzono, że ta instytucja powinna odgrywać pięć kluczowych ról: agenta, rzecznika, koordynatora, lidera i twórcy wizerunku. Postawiono hipotezę, że w miastach będących liderami w rankingu ICCA convention bureau łączy powyższe role, natomiast w miastach o niewielkiej liczbie spotkań opisywany podmiot koncentruje się głównie na roli agenta. Realizacja celu była możliwa dzięki przeprowadzeniu międzynarodowego badania wśród osób zarządzających convention bureaux w 73 miastach. Kwestionariusz przesłano drogą mailową, a późniejszą analizę danych przeprowadzono przy pomocy metody IPA (Importance-Performance Analysis). Ostatecznie hipoteza została zweryfikowana negatywnie.
Źródło:
Prace Naukowe Uniwersytetu Ekonomicznego we Wrocławiu; 2017, 473; 422-432
1899-3192
Pojawia się w:
Prace Naukowe Uniwersytetu Ekonomicznego we Wrocławiu
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Repeated acceleration activity in competitive youth soccer
Autorzy:
Barron, David J.
Atkins, Steve
Edmundson, Chris
Fewtrell, Dave
Powiązania:
https://bibliotekanauki.pl/articles/1054996.pdf
Data publikacji:
2016
Wydawca:
Uniwersytet Szczeciński. Wydawnictwo Naukowe Uniwersytetu Szczecińskiego
Tematy:
GPS
RAA
performance analysis
repeated acceleration ability
soccer
youth
Opis:
Soccer match-play is increasingly characterised by short, high-speed bursts reliant on the ability to accelerate. Performance is impaired after peak acceleration activity and during the second half and may compromise a player’s effectiveness. To date, information about repeated acceleration sequences is lacking but would provide further insight into high-speed activity during competition. This study examined repeated acceleration ability (RAA) using GPS (5 Hz) and accelerometer (100 Hz), during 14 competitive youth soccer matches from the 2014–2015 season. Results showed that RAA profiles were relatively homogeneous, and there were no significant differences between playing positions. RAA activity was also relatively stable between playing halves and only the activity of forwards declined significantly. In summary, this study suggests that RAA is a generic requirement of match-play at this level but presents a specific focus for conditioning regimens.
Źródło:
Central European Journal of Sport Sciences and Medicine; 2016, 14, 2; 55 - 61
2300-9705
2353-2807
Pojawia się w:
Central European Journal of Sport Sciences and Medicine
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
System dynamics as a decision support system for machine tool selection
Autorzy:
Adane, T. F.
Nicolescu, M.
Powiązania:
https://bibliotekanauki.pl/articles/99389.pdf
Data publikacji:
2016
Wydawca:
Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych
Tematy:
machine selection
decision making
performance analysis
system dynamics modelling
Opis:
The worldwide competitive economy, the increase in sustainable issue and investment of new production line is demanding companies to choose the right machine from the available ones. An improper selection can negatively affect the overall performance of the manufacturing system like productivity, quality, cost and companys responsive manufacturing capabilities. Thus, selecting the right machine is desirable and substantial for the company to sustain competitive in the market. The ultimate objective of this paper is to formulate a framework for machining strategy and also provide methodology for selecting machine tool from two special purpose machine tools in consideration of interaction of attributes. A decision support system for the selection of machine tool is developed. It evaluates the performance of the machining process and enhances the manufacturer (decision maker) to select the machine with respect to the performance and the pre-chosen criteria. Case study was conducted in a manufacturing company. A system dynamics modelling and simulation techniques is demonstrated towards efficient selection of machine tool that satisfy the future requirement of engine-block production.
Źródło:
Journal of Machine Engineering; 2016, 16, 3; 102-125
1895-7595
2391-8071
Pojawia się w:
Journal of Machine Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Investigation on a quasi-zero-stiffness vibration isolator under random excitation
Autorzy:
Wang, Y.
Li, S.
Cheng, C.
Powiązania:
https://bibliotekanauki.pl/articles/281608.pdf
Data publikacji:
2016
Wydawca:
Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
Tematy:
vibration isolator
quasi-zero-stiffness
random excitation
dynamic analysis
performance analysis
Opis:
The dynamic response and isolation performance of a Quasi-Zero-Stiffness (QZS) vibration isolator using inclined springs as negative stiffness correctors under random excitation are presented in this paper. The probabilistic linearization method is employed to determine the dynamic response of the QZS vibration isolator and compared with the exact solution based on the Fokker-Planck-Kolmogorov (FPK) equation and the equivalent linearization method. Two performance indexes (Mean Square Relative Displacement (MSRD) and Mean Square Acceleration (MSA)) are considered to evaluate the isolation performance of the QZS vibration isolator under random excitation and compared with the equivalent linear vibration isolator. The results show that the MSRD of the QZS vibration isolator is always lower than the equivalent linear vibration isolator, while the MSA of the QZS vibration isolator can be larger or lower than the equivalent linear vibration isolator based on the values of damping ratio and spectral density of the random excitation
Źródło:
Journal of Theoretical and Applied Mechanics; 2016, 54, 2; 621-632
1429-2955
Pojawia się w:
Journal of Theoretical and Applied Mechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analiza porównawcza wydajności frameworków Angular oraz Vue.js
Perfomance analysis of frameworks Angular and Vue.js
Autorzy:
Baida, Roman
Andriienko, Maksym
Plechawska-Wójcik, Małgorzata
Powiązania:
https://bibliotekanauki.pl/articles/98392.pdf
Data publikacji:
2020
Wydawca:
Politechnika Lubelska. Instytut Informatyki
Tematy:
Angular
Vue
analiza porównawcza
gra przeglądarkowa
performance analysis
browser game
Opis:
Celem artykułu jest porównanie wydajności popularnych frameworków JavaScriptowych Angular i Vue.js w kontekście tworzenia gier oraz wybór lepszego z nich. Kryteria porównawcze są następujące: czas wymiany danych z serwerem oraz renderowania różnych komponentów aplikacji, ilość zajmowanej pamięci podczas odświeżania informacji o przebiegu gry i przywróceniu użytkownika do bieżącej gry, stopień obciążenia przeglądarki oraz rozmiar plików końcowych. Na podstawie wyników z przeprowadzonych badań można stwierdzić, że bardziej wydajny jest framework Vue.js.
The aim of the paper is to compare the performance of popular JavaScript frameworks Angular and Vue.js in the context of game development. The comparative criteria are as follows: time of data exchanging with server and rendering of various application components, memory consumption during refreshing the current game information and restoring the user to the current game, browser load level and size of the final application files. The test results show that the Vue.js framework is more efficient.
Źródło:
Journal of Computer Sciences Institute; 2020, 14; 59-64
2544-0764
Pojawia się w:
Journal of Computer Sciences Institute
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Dramaturgy of "Hamlet"(s) in Czech Theatre between 2000 and 2023
Autorzy:
Drozd, David
Powiązania:
https://bibliotekanauki.pl/articles/39774946.pdf
Data publikacji:
2023
Wydawca:
Uniwersytet Łódzki. Wydawnictwo Uniwersytetu Łódzkiego
Tematy:
Hamlet
dramaturgy
directing
post-modern theatre
performance analysis
Czech theatre
Opis:
The paper focuses on five Czech productions of Hamlet that attracted the most critical and public attention between 2000 and 2023. Namely, the productions directed by Miroslav Krobot (2006), Jan Mikulášek (2009), Daniela Špinar (2013), Michal Dočekal (2021) and finally the most recent version by Jakub Čermák (2022). All five performances could be seen as contemporary reinterpretations of a classical text using a (post-)modern stylistic approach, as examples of post-millennium Hamlets. The paper discusses dramaturgical choices (such as the conceptualisation of the ghost, the mousetrap scene, or the character of Fortinbras) in order to identify and analyse possibilities for interpreting Hamlet as a political drama in the context of Czech performance tradition and the current political situation. The results show that performances generally present variations of Hamlet as a family drama, foregrounding different issues of memory and body, while the political reading is obsolete.
Źródło:
Multicultural Shakespeare: Translation, Appropriation and Performance; 2023, 28, 43; 177-192
2083-8530
2300-7605
Pojawia się w:
Multicultural Shakespeare: Translation, Appropriation and Performance
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Efficiency measurement using nonparametric production analysis in the presence of undesirable outputs : an application to power plants
Autorzy:
Amirteimoori, A.
Kordrostami, S.
Fooladvand, M.
Powiązania:
https://bibliotekanauki.pl/articles/406646.pdf
Data publikacji:
2017
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
data envelopment analysis
performance analysis
undesirable outputs
weak disposability
efficiency
input/output
Opis:
In order to deal with undesirable products in models of performance analysis, we need to replace the assumption of free disposability by weak disposability and this assumption has been used to model undesirable products as outputs. The traditional axiom of weak disposability of Shephard (1970) is given in a multiplier form and, in this sense, the level of bad outputs is equal to zero if and only if the level of the desirable outputs is equal to zero. An alternative definition of the weak disposability of outputs in additive form has been proposed. An axiomatic foundation has been introduced to construct a new production technology space in the presence of undesirable outputs. The model is illustrated using real data from 92 coal fired power plants.
Źródło:
Operations Research and Decisions; 2017, 27, 3; 5-20
2081-8858
2391-6060
Pojawia się w:
Operations Research and Decisions
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analiza porównawcza aplikacji webowych napisanych w językach: PHP oraz Python
Comparative analysis of web applications implemented in: PHP and Python
Autorzy:
Zborowski, Jakub
Pańczyk, Maciej
Powiązania:
https://bibliotekanauki.pl/articles/24083641.pdf
Data publikacji:
2023
Wydawca:
Politechnika Lubelska. Instytut Informatyki
Tematy:
aplikacja webowa
analiza wydajności
PHP
Python
web application
performance analysis
Opis:
Artykuł przedstawia analizę porównawczą dwóch aplikacji webowych napisanych w językach: PHP oraz Python. Stworzono aplikacje testowe, które zostały wyposażone w tą samą funkcjonalność wykorzystaną w badaniach polegających na pomiarze czasów odpowiedzi serwera na żądania typu INSERT, SELECT, UPDATE i DELETE –obsługujące operacje na bazie danych. Celem badań było porównanie obydwu języków pod względem wybranych kryteriów. Porównywano ich wydajność, objętość kodu źródłowego oraz popularność
This article presents a comparative analysis of two web applications implemented in PHP and Python. Test applications were created and equipped with the same functionality used in tests consisting in measuring the server response times to INSERT, SELECT, UPDATE and DELETE requests - handling database operations. The purpose of the research was to compare both languages in terms of selected criteria. Their performance, source code volume and popularity were compared.
Źródło:
Journal of Computer Sciences Institute; 2023, 26; 18--22
2544-0764
Pojawia się w:
Journal of Computer Sciences Institute
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analiza porównawcza wydajności relacyjnych baz danych MySQL, PostgreSQL, MariaDB oraz H2
Perfomance analysis of relational databases MySQL, PostgreSQL, MariaDB and H2
Autorzy:
Krocz, Katarzyna
Kizun, Oleksandra
Skublewska-Paszkowska, Maria
Powiązania:
https://bibliotekanauki.pl/articles/98334.pdf
Data publikacji:
2020
Wydawca:
Politechnika Lubelska. Instytut Informatyki
Tematy:
SZBD
relacyjny model
analiza porównawcza
DBMS
relational model
performance analysis
Opis:
Celem artykułu jest porównanie wydajności baz danych MySQL, PostgreSQL, MariaDB i H2 oraz wybór najlepszej z nich. Zbadana zostanie prędkość wykonywania prostych oraz bardziej złożonych zapytań SQL. Odpowiedź na pytanie, która z nich jest bardziej wydajna, zostanie udzielona na podstawie wyników z przeprowadzonych badań.
This article will compare the performance of relational databases MySQL, PostgreSQL, MariaDB and H2. The speed of executing will be tested on simple and more complex SQL queries. The tests results will show which database is more efficient.
Źródło:
Journal of Computer Sciences Institute; 2020, 14; 1-7
2544-0764
Pojawia się w:
Journal of Computer Sciences Institute
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A survey on mobility models for performance analysis in tactical mobile networks
Autorzy:
Aschenbruck, N.
Gerhards-Padilla, E.
Martini, P.
Powiązania:
https://bibliotekanauki.pl/articles/308212.pdf
Data publikacji:
2008
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Tematy:
mobility models
performance analysis
wireless networks
mobile network
tactical networks
Opis:
In scenarios of military operations and catastrophes - even when there is no infrastructure available or left - there is a need for communication. Due to the specific context the communication systems used in these tactical scenarios need to be as reliable as possible. Thus, the performance of these systems has to be evaluated. Beside field-tests, computer simulations are an interesting alternative concerning costs, scalability, etc. Results of simulative performance evaluation strongly depend on the models used. Since tactical networks consist of, or, at least, contain mobile devices, the mobility model used has a decisive impact. However, in common performance evaluations mainly simple random-based models are used. In the paper we will provide classification and survey of existing mobility models. Furthermore, we will review these models concerning the requirements for tactical scenarios.
Źródło:
Journal of Telecommunications and Information Technology; 2008, 2; 54-61
1509-4553
1899-8852
Pojawia się w:
Journal of Telecommunications and Information Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The analysis of shaft sinking progress as a function of technical and organizational parameters
Autorzy:
Bołoz, Łukasz
Powiązania:
https://bibliotekanauki.pl/articles/2064874.pdf
Data publikacji:
2019
Wydawca:
STE GROUP
Tematy:
shaft complex
performance analysis
shaft sinking
daily progress
mechanical cutting
Opis:
In underground mines, where the deposit is located at considerable depths, mining shafts are key excavations. The project of making the deposit available requires selection of appropriate shaft sinking technology adapted to geological and hydrological conditions and natural hazards. Shafts can be made using the classic drilling and blasting technique or mechanical cutting of the shaft face. Mechanical cutting requires the use of a mining machine, which together with machines for loading and hauling the output and protecting the side walls is a shaft complex. Drilling using mechanized shaft complexes allows for high efficiency and work safety. To improve the efficiency of drilling, it is particularly important to implement many processes in parallel. The article presents an analysis of the progress of shaft sinking with a mechanized complex as a function of technical and organizational parameters. The analysis concerned a new generation cutting shaft complex, developed for the needs of shaft sinking for one of the Polish hard coal mines. The calculations were carried out for a shaft with a maximum diameter of 9.5 m and a total depth of 830 m. The article briefly presents a new solution for the shaft complex. There are presented results of calculations of daily drilling progress and total time of shaft sinking for the developed working technology of this complex. The efficiency of the complex depends on many factors related to technical parameters of individual machines and devices forming the complex and organizational parameters, hence a multi-variant analysis was carried out.
Źródło:
Multidisciplinary Aspects of Production Engineering; 2019, 2, 1; 203--212
2545-2827
Pojawia się w:
Multidisciplinary Aspects of Production Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Throughput Performance Comparison of MPT-GRE and MPTCP in the Fast Ethernet IPv4/IPv6 Environment
Autorzy:
Szilágyi, S.
Fejes, F.
Katona, R.
Powiązania:
https://bibliotekanauki.pl/articles/307712.pdf
Data publikacji:
2018
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Tematy:
channel capacity aggregation
MPTCP
MPT-GRE
multipath communication
performance analysis
tunneling
Opis:
This paper presents the MPT-GRE software, a novel multipath communication technology founded on the Generic Routing Encapsulation (GRE) protocol in UDP tunneling RFC specification. It enables the creation of a GRE protocolbased UDP tunnel built on several communication channels. On the other hand, MPTCP is one of the most typical representatives among multipath communication technologies, basing its operation on the utilization of TCP subflows. The authors compare the path-aggregation capabilities of these two technologies using four Fast Ethernet channels. The tests were carried out with the iperf3 network bandwidth measurement tool, and while transferring data using the FTP protocol over both IPv4 and IPv6.
Źródło:
Journal of Telecommunications and Information Technology; 2018, 2; 53-59
1509-4553
1899-8852
Pojawia się w:
Journal of Telecommunications and Information Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analiza możliwości zarządzania bazą danych przechowywaną w chmurze
Analysis of the possibility of managing the database stored in the cloud
Autorzy:
Góźdź, R.
Skublewska-Paszkowska, M.
Powiązania:
https://bibliotekanauki.pl/articles/98106.pdf
Data publikacji:
2016
Wydawca:
Politechnika Lubelska. Instytut Informatyki
Tematy:
usługi chmurowe
baza danych
analiza wydajności
cloud computing
database
performance analysis
Opis:
W artykule przedstawiono porównawczą analizę wydajnościową wybranych systemów baz danych. Porównano czasy wykonania zapytań SQL przez przygotowane bazy danych działające w usłudze chmurowej. Przygotowana baza danych Northwind działająca na SQL Server została przeniesiona na systemy Oracle i PostgreSQL, a następnie trzy wymienione bazy zostały umieszczone w chmurze Microsoft Azure. Proces badawczy został podzielony na trzy etapy. W pierwszej kolejności analizie podlegają zapytania typu Select. W drugim etapie analiza skupia się na kwestii wydajności zapytań SQL DDL, a końcowy etap opisuje analizę zapytań SQL DML.
The article presents a comparative analysis of the performance of selected database systems. The time of execution of SQL statements has been compared by prepared database service which are running in the cloud. Prepared Northwind database running on SQL Server has been moved to systems Oracle and PostgreSQL, and then three of these bases have been placed in the cloud Microsoft Azure. The research process was divided into three stages. Firstly, queries with Select are analyzed. In the second stage, the analysis focuses on the performance of SQL DDL, and the final stage of the analysis describes the SQL DML.
Źródło:
Journal of Computer Sciences Institute; 2016, 2; 127-132
2544-0764
Pojawia się w:
Journal of Computer Sciences Institute
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Performance analysis and evaluation of massive MIMO system
Autorzy:
Al-Rawi, Muaayed F.
Abbou, Izz K.
Al-Awad, Nasir A.
Powiązania:
https://bibliotekanauki.pl/articles/118039.pdf
Data publikacji:
2020
Wydawca:
Polskie Towarzystwo Promocji Wiedzy
Tematy:
performance analysis
MIMO
Rician fading channels
analiza wydajności
zanikający kanał Rician
Opis:
This article examines the performance of massive MIMO uplink system over Rician fading channel. The performance is estimated regarding spectral efficiency versus number of base station antennas utilizing three plans of linear detection, maximum-ratio-combining (MRC), zero forcing receiver (ZF), and minimum mean-square error receiver (MMSE). The simulation results reveal that the spectral efficiency increments altogether with expanding the quantity of base station antennas. Additionally, the spectral efficiency with MMSE is superior to that with ZF, and the last is superior to that with MRC. Furthermore, the spectral efficiency diminishes with expanding the fading parameter.
Źródło:
Applied Computer Science; 2020, 16, 2; 112-119
1895-3735
Pojawia się w:
Applied Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analiza porównawcza technologii Windows Presentation Foundation i Windows Forms
Comparative analysis of Windows Presentation Foundation and Windows Forms
Autorzy:
Michał, Pasztaleniec
Maria, Skublewska-Paszkowska
Powiązania:
https://bibliotekanauki.pl/articles/98142.pdf
Data publikacji:
2020
Wydawca:
Politechnika Lubelska. Instytut Informatyki
Tematy:
NET
WPF
Windows Presentation Foundation
Windows Forms
WinForms
analiza wydajności
performance analysis
Opis:
Artykuł przedstawia porównanie dwóch technologii do tworzenia aplikacji desktopowych opartych o język C#. Analiza dotycząca wykorzystania procesora, pamięci RAM oraz czasu wykonywania operacji została przeprowadzona na technologiach Windows Presentation Foundation i Windows Forms. Do badań wykorzystano aplikacje o tej samej funkcjonalności w obu technologiach. W analizie porównawczej uwzględniono czasy danych operacji oraz wydajność aplikacji.
The article presents a comparison of two technologies for creating desktop applications based on C#. The analysis conserns the use of the processor, RAM and time of the operation was carried out on the technologies of Windows Presentation Foundation and Windows Forms. The research use applications with the same functionality in both technologies. The comparative analysis took into account the times of operations and application performance.
Źródło:
Journal of Computer Sciences Institute; 2020, 14; 26-30
2544-0764
Pojawia się w:
Journal of Computer Sciences Institute
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Performance analysis of an InAs/GaSb superlattice barrier photodetector covering the full LWIR spectral domain
Autorzy:
Alchaar, Rodolphe
Rodriguez, Jean-Baptiste
Höglund, L.
Naureen, Shagufta
Costard, Eric
Christol, Philippe
Powiązania:
https://bibliotekanauki.pl/articles/1818240.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Stowarzyszenie Elektryków Polskich
Tematy:
barrier photodetector
InAs/GaSb type-2 superlattice
long wavelength infrared
performance analysis
Opis:
In this paper, we present the electrical and electro-optical characterizations of an InAs/GaSb type-2 superlattice barrier photodetector operating in the full longwave infrared spectral domain. The fabricated detectors exhibited a 50% cut-off wavelength around 14 μm at 80 K and a quantum efficiency slightly above 20%. The dark current density was of 4.6×10⁻² A/cm² at 80 K and a minority carrier lateral diffusion was evaluated through dark current measurements on different detector sizes. In addition, detector spectral response, its dark current-voltage characteristics and capacitance-voltage curve accompanied by electric field simulations were analyzed in order to determine the operating bias and the dark current regimes at different biases. Finally, dark current simulations were also performed to estimate a minority carrier lifetime by comparing experimental curves with simulated ones.
Źródło:
Opto-Electronics Review; 2020, 28, 3; 164--170
1230-3402
Pojawia się w:
Opto-Electronics Review
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Performance analysis of an InAs/GaSb superlattice barrier photodetector covering the full LWIR spectral domain
Autorzy:
Alchaar, R.
Rodriguez, J.-B.
Höglund, L.
Naureen, S.
Costard, E.
Christol, P.
Powiązania:
https://bibliotekanauki.pl/articles/1818247.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Stowarzyszenie Elektryków Polskich
Tematy:
barrier photodetector
InAs/GaSb type-2 superlattice
long wavelength infrared
performance analysis
Opis:
In this paper, we present the electrical and electro-optical characterizations of an InAs/GaSb type-2 superlattice barrier photodetector operating in the full longwave infrared spectral domain. The fabricated detectors exhibited a 50% cut-off wavelength around 14 μm at 80 K and a quantum efficiency slightly above 20%. The dark current density was of 4.6×10⁻² A/cm² at 80 K and a minority carrier lateral diffusion was evaluated through dark current measurements on different detector sizes. In addition, detector spectral response, its dark current-voltage characteristics and capacitance-voltage curve accompanied by electric field simulations were analyzed in order to determine the operating bias and the dark current regimes at different biases. Finally, dark current simulations were also performed to estimate a minority carrier lifetime by comparing experimental curves with simulated ones.
Źródło:
Opto-Electronics Review; 2020, 28, 3; 164--170
1230-3402
Pojawia się w:
Opto-Electronics Review
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wydajność pracowników i ergonomiczny program prewencyjny
Employees’ performance and ergonomic prevention program
Autorzy:
Dulina, L.
Gašo, M.
Kramárová, M.
Plinta, D.
Powiązania:
https://bibliotekanauki.pl/articles/339862.pdf
Data publikacji:
2017
Wydawca:
Polskie Towarzystwo Zarządzania Produkcją
Tematy:
ergonomia
analiza wydajności
doskonalenie stanowisk pracy
ergonomics
performance analysis
improvement of workplaces
Opis:
The article deals with the human performance and the factors that affect job performance. During the performance of work a person is exposed to risk factors, which to some extent adversely affect his health. It is necessary to note, that currently prevail in the company of two views on the position of man in the process. First, promoted in particular employers, puts emphasis on increasing the performance of workers and productivity growth. The second view is supported by employees and emphasises the need for safety and health at work of man. The aim of ergonomics is currently referred to harmonise these views. Work is an essential and therefore the dominant activity in the life of every person. An employer has to create the optimal workingconditions for an employee to be able to use their performance-related capacity fully. The results which the keeping of the ergonomic rules in an enterprise brings can be divided into the economic ones, important for the employer and the health keeping ones, important for the employee. A man spends an essential part of their life in a work activity which has formed them during the whole evolution. Therefore we cannot overlook work activity and its effect on a person because it has progressive importance in human development and it is the factor of mental and physical functions improvement.
Źródło:
Zarządzanie Przedsiębiorstwem; 2017, 20, 3; 2-9
1643-4773
Pojawia się w:
Zarządzanie Przedsiębiorstwem
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Identification of main areas of customer service process improving in the cinema
Identyfikacja kluczowych obszarów doskonalenia procesu obsługi klienta w kinie
Autorzy:
Kowalik, K.
Klimecka-Tatar, D.
Powiązania:
https://bibliotekanauki.pl/articles/109055.pdf
Data publikacji:
2017
Wydawca:
Stowarzyszenie Menedżerów Jakości i Produkcji
Tematy:
customer service process
improvement
Importance-Performance Analysis
Servqual
doskonalenie
proces obsługi klienta
Opis:
The purpose of this paper is the identification of main areas of customer service process improving in the cinema with using the Servqual and the Importance-Performance methods. The first part of the article contains theorecital characteristic of the chosen research methods. Afterwards, there are presented the results of the empirical research conducted on the group of one hundred cinema customers which analysis contributed to the indication of the most important attributes of the process that require improving.
Podstawowym celem artykułu jest identyfikacja kluczowych obszarów doskonalenia procesu obsługi klienta w kinie z wykorzystaniem metody Servqual i Importance-Performance Analysis. Pierwsza część opracowania zawiera teoretyczną charakterystykę wybranych metod badawczych. Następnie przedstawione zostały wyniki badań empirycznych przeprowadzonych na grupie stu klientów kina, których analiza przyczyniła się do wskazania najważniejszych cech procesu wymagających doskonalenia.
Źródło:
Archiwum Wiedzy Inżynierskiej; 2017, 2, 1; 42-44
2544-2449
Pojawia się w:
Archiwum Wiedzy Inżynierskiej
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Optimizations in Dynamic Origin Technique for Efficient Lane Detection for Autonomous Vehicles
Autorzy:
Maya, P.
Tharini, C.
Powiązania:
https://bibliotekanauki.pl/articles/27311931.pdf
Data publikacji:
2023
Wydawca:
Polska Akademia Nauk. Czasopisma i Monografie PAN
Tematy:
lane detection
dynamic origin technique
partial hough transform
performance analysis
accuracy analysis
optimization
autonomous vehicles
Opis:
Driver assistance systems have started becoming a key differentiator in automotive space and all major automotive manufacturers have such systems with various capabilities and stages of implementation. The main building blocks of such systems are similar in nature and one of the major building blocks is road lane detection. Even though lane detection technology has been around for decades, it is still an ongoing area of research and there are still several improvements and optimizations that are possible. This paper offers an Optimized Dynamic Origin Technique (Optimized DOT) for lane detection. The proposed optimization algorithm of optimized DOT gives better results in performance and accuracy compared to other methods of lane detection. Analysis of proposed optimized DOT with various edge detection techniques, various threshold levels, various sample dataset and various lane detection methods were done and the results are discussed in this paper. The proposed optimized DOT lane detection average processing time increases by 9.21 % when compared to previous Dynamic Origin Technique (DOT) and 59.09 % compared to traditional hough transform.
Źródło:
International Journal of Electronics and Telecommunications; 2023, 69, 2; 407--413
2300-1933
Pojawia się w:
International Journal of Electronics and Telecommunications
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Porównanie wydajności aplikacji internetowych REST API opartych na szkieletach programistycznych JavaScript
REST API performance comparison of web applications based on JavaScript programming frameworks
Autorzy:
Grudniak, Marcin
Dzieńkowski, Mariusz
Powiązania:
https://bibliotekanauki.pl/articles/2055118.pdf
Data publikacji:
2021
Wydawca:
Politechnika Lubelska. Instytut Informatyki
Tematy:
Express
Hapi
performance analysis
response time of requests
analiza wydajności
czas obsługi żądań
Opis:
Celem pracy było porównanie dwóch technologii do tworzenia aplikacji serwerowych opartych na języku programowania JavaScript. Na potrzeby badań utworzono dwie aplikacje testowe: pierwszą zbudowano na podstawie szkieletu programistycznego Express, a druga została wykonana na bazie szkieletu Hapi. Część kliencką obu aplikacji przygotowano za pomocą biblioteki React. Część kliencka i serwerowa komunikowały się ze sobą za pośrednictwem REST API - uniwersalnego interfejsu HTTP. Aplikacja kliencka wysyłała żądania do aplikacji serwerowej, która następnie wykonywała podstawowe operacje na bazie MongoDB i zwracała rezultat. W ramach pracy opracowano eksperyment składający się z czterech scenariuszy. W każdym scenariuszu operowano na innym typie danych: łańcuchu znaków, tablicy, obiekcie oraz tablicy obiektów. W badaniach skoncentrowano się na aspekcie wydajnościowym - pomiarze czasów obsługi żądań podczas operacji GET, POST, PUT i DELETE. Badania przeprowadzono na dwóch komputerach, a pomiary wykonano dwoma sposobami: za pomocą prostego kodu wbudowanego w aplikacje testowe oraz za pomocą narzędzia Postman. Uzyskane wyniki, po ich uśrednieniu i przeanalizowaniu pozwoliły na sformułowanie wniosku, że szkielet Express okazał się wydajniejszy niż Hapi, ze względu na krótsze czasy obsługi żądań. Tylko w scenariuszu, w którym wykonywano operacje na dużych zbiorach danych, czasy obsługi żądań były na podobnym poziomie.
The aim of the work was to compare two technologies for creating server applications based on the JavaScript pro-gramming language. For the purposes of the research, two test applications were created. The first one was built on the basis of the Express programming framework and the second one on the basis of the Hapi framework. The client part of both applications was prepared using the React library. The client and server parts communicated with each other by means of REST API – the universal HTTP interface. The client application sent requests to the server application which then performed basic operations on the MongoDB basis and returned the result. As part of the work, an experiment consisting of four scenarios was developed. In each scenario, a different type of data was taken into consideration: a string of characters, an array, an object and an array of objects. The research focused on the efficiency aspect – measuring the response time of requests during GET, POST, PUT and DELETE operations. The tests were performed on two computers and the measurements were made in two ways: using a single code embedded in test applications and using the Postman tool. The obtained results, after averaging and analyzing them allowed for the conclusion that the Express framework proved to be more efficient than Hapi due to the shorter response time of requests. Only in the scenario where operations with large datasets were performed was the response time of requests at a similar level.
Źródło:
Journal of Computer Sciences Institute; 2021, 19; 121--125
2544-0764
Pojawia się w:
Journal of Computer Sciences Institute
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A software development application for sustainable airport performance analysis
Rozwój aplikacji służących do analizy zrównoważonej działalności lotniska
Autorzy:
Merdivenci, Fahriye
Erturgut, Ramazan
Coşkun, Artuğ Eren
Powiązania:
https://bibliotekanauki.pl/articles/1835513.pdf
Data publikacji:
2021
Wydawca:
Wyższa Szkoła Logistyki
Tematy:
airport
airport performance
sustainability
performance analysis
sustainable performance softwar
porty lotnicze
działalność lotniska
rozwój zrównoważony
analizy działalności
aplikacja oceny rozwoju zrównoważonego
Opis:
In today’s rapidly changing global economy, airports have an important role in the social, cultural, and economic development of societies and in building bridges between interconnected markets. Sustainability requires a balance between economic, social, and environmental processes and performance-based progress in efforts on all three dimensions at an optimum level. Therefore, sustainable performance measurement and management is an important function for the control of airports. The suitability of investments in airports to respond to the increasing needs and expectations of the future can be realized through a rational structure that operates technologically, effectively, and efficiently. The need for this structure to be sustainable with above-average performance further increases the importance of the issue. This study aims to develop a sustainable performance software for airports by conducting a sustainable performance analysis based on multiple variables. Methods: For sustainable performance analysis at airports, it is important to include economic, social, and environmental parameters, which are the three sub-dimensions of sustainability, in all strategic, tactical, and operational processes and decision-making mechanisms. For the performance analysis of airports, the DEMATEL Method, and the Objectives Matrix (OMAX) Method, which evaluates all the criteria together, were used to weight various performance indicators. Results: The most important criterion at Antalya Airport, which is also the most affected by other criteria, is "economic". Sustainable performance scores of Antalya Airport for 2018 and 2019 were calculated. The airport's performance in 2019 is higher compared to 2018. Conclusions: The biggest achievement of this research is thought to be developing a “Sustainable Performance Software” for national and international airports. This study will also contribute to the emergence of studies that will reveal the performances of other airports and compare their past performances with their current and national performances.
We współczesnej, szybko się zmieniającej globalnej gospodarce, lotniska odgrywają ważną rolę w socjalnym, kulturalnym i ekonomicznym rozwoju społeczności oraz w budowaniu nowych mostów pomiędzy różnymi rynkami. Rozwój zrównoważony oznacza zachowanie balansu pomiędzy ekonomicznymi, społecznymi i środowiskowymi procesami oraz postępem we wszystkich tych trzech wymiarach na optymalnym poziomie. Dlatego też pomiar jak i zarządzanie zrównoważonej działalności odgrywa istotną funkcję w kontroli lotnisk. Zachowanie zasada zrównoważonego rozwoju w inwestycjach lotniskowych, będących odpowiedzią na zwiększający się popyt na ich usługi może być realizowany efektywnie w ramach zracjonalizowanej struktury. Struktura ta powinna odpowiadać zasadom rozwoju zrównoważonego, który to będzie odgrywał coraz istotniejszą rolę i zwiększał swoje znaczenie. Celem pracy jest opracowanie oprogramowania oceny rozwoju zrównoważonego lotnisk poprzez analizę działalności zrównoważonej obejmującą wiele zmiennych. Metody: Do przeprowadzenia analizy działalności zrównoważonej lotniska, istotne jest uwzględnienie ekonomicznych, społecznych oraz środowiskowych czynników, które są trzema podwymiarami rozwoju zrównoważonego we wszystkich strategicznych, taktycznych i operacyjnych procesach i mechanizmach decyzyjnych. W celu przeprowadzenia analizy, zastosowano metody DEMATEL oraz OMAX (Objectives Matrix), umożliwiające uwzględnienie tych wszystkich czynników równocześnie, poprzez zastosowanie wskaźników wagowych. Wyniki: Najważniejszym czynnikiem dla lotniska Antalya, jak również o największym znaczeniu, jest czynnik ekonomiczny. Współczynniki działalności zrównoważonych dla lotniska Antalya zostały obliczone dla lat 2018 oraz 2019. Działalność lotniska w 2019 była większa aniżeli w 2018. Wnioski: Największym osiągnięciem tej pracy jest opracowanie “aplikacji oceny działalności zrównoważonej” dla zarówno krajowych jak i międzynarodowych lotnisk. Praca ta przyczynia się również do pogłębienia prac badawczych nad działalnością innych lotnisk oraz porównania ich działania z poprzednimi ich osiągnięciami.
Źródło:
LogForum; 2021, 17, 1; 131-145
1734-459X
Pojawia się w:
LogForum
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wydajnościowa analiza porównawcza szkieletów programistycznych ASP.NET Core MVC i Symfony 4
Comparative analysis of performance of ASP.NET Core MVC and Sym-fony 4 programming frameworks
Autorzy:
Górski, Marcin
Piwowarski, Wojciech Andrzej
Dzieńkowski, Mariusz
Powiązania:
https://bibliotekanauki.pl/articles/2055111.pdf
Data publikacji:
2021
Wydawca:
Politechnika Lubelska. Instytut Informatyki
Tematy:
performance analysis
automatic testing
framework
ASP
NET Core MVC
Symfony
Puppeteer
analiza wydajnościowa
testowanie automatyczne
Opis:
Artykuł przedstawia analizę porównawczą popularnych szkieletów programistycznych ASP.NET Core MVC oraz Symfony 4. W technologiach tych zaimplementowano dwie aplikacje internetowe, zawierające te same funkcjonalności, pełniące funkcję prostego systemu do zarządzania artykułami. Te aplikacje zostały poddane testom wydajności czasowej podczas realizacji typowych operacji wykonywanych za pośrednictwem prostego formularza takich jak wprowadzanie, edycja, wyświetlanie i usuwanie danych. Czynności te były wykonywane automatycznie za pomocą poleceń z biblioteki Puppeteer. Wyszczególnione operacje były powtarzane 10, 100 i 1000 razy w celu uzyskania precyzyjnych średnich czasów. Na podstawie otrzymanych wyników trudno było jednoznacznie stwierdzić, które z porównywanych narzędzi programistycznych jest lepsze. Z dwiema czasochłonnymi operacjami tzn. wprowadzaniem i edycją danych, znacznie lepiej radził sobie framework ASP.NET Core. Jego wyniki pod tym względem (średnia z 1000 powtórzeń) były odpowiednio o około 28% i 25% lepsze w stosunku do szkieletu Symfony 4. Natomiast dla dwóch mniej czasochłonnych operacji, czyli wyświetlania i usuwania artykułów, wyraźnie lepszym okazał się szkielet Symfony 4. Jego wyniki dla wyświetlania i usuwania artykułów (średnia dla 1000 pomiarów) były o 15 i 36 procent odpowiednio niższe w stosunku do drugiego badanego szkieletu.
The article presents a comparative analysis of popular ASP.NET Core MVC and Symfony 4 frameworks. Two web applications, containing the same functionalities and acting as a simple system for managing articles, were implemented in these technologies. The applications underwent time performance tests during typical operations performed by means of a simple form such as entering, editing, viewing and deleting data. These actions were performed automatically using commands from the Puppeteer library. The listed operations were repeated 10, 100 and 1,000 times in order to obtain precise mean times. On the basis of the obtained results, it was difficult to clearly state which of the compared programming tools is better. The ASP.NET Core MVC framework coped much better with two time-consuming operations, i.e. entering and editing data. Its results in this regard (the average from 1,000 repetitions) were respectively approximately 28% and 25% better compared to the Symphony 4 framework. However, for the two less time-consuming operations, i.e. displaying and deleting articles, the Symphony 4 framework proved to be considerably better. Its results with regard to displaying and deleting articles (the average for 1,000 measurements) were respectively 15% and 36% lower compared to the other of the tested frameworks.
Źródło:
Journal of Computer Sciences Institute; 2021, 19; 95--99
2544-0764
Pojawia się w:
Journal of Computer Sciences Institute
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Probabilistic elements in analysis of performance of multiprocessor systems
Autorzy:
Taborek, K.
Hrynkiewicz, E.
Powiązania:
https://bibliotekanauki.pl/articles/201505.pdf
Data publikacji:
2014
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
arbitration circuit
multiprocessor system
performance analysis
queueing model
arbitraż
system wieloprocesorowy
analiza wydajności
model kolejkowy
Opis:
The paper presents important probabilistic elements that should be taken into consideration in the analysis of performance of classical multiprocessor systems. These elements represent the following quantities: modified arrival rate for processor requests and a few probabilities, which determine the frequency of certain events when a multiprocessor system is working. There are four peculiar events: service of another job, existence of the queue, a processor request while the given task is waiting into the queue and the return of another task into the queue while the given task is waiting in the queue. The first three events happen more often when a system consists of less number of processors, whereas the fourth event happens more often when more processors work in a system. Including (or not) the probabilities of these events to the analysis of performance of multiprocessor systems exerts its much influence on the precision of computations. All the mentioned quantities were described in detail. Formulas for these quantities were derived. Examples of applications of the formulas to the prediction of performance of various multiprocessor systems were presented.
Źródło:
Bulletin of the Polish Academy of Sciences. Technical Sciences; 2014, 62, 4; 765-771
0239-7528
Pojawia się w:
Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Service strategies in tandem server networks with feedback and blocking
Strategie obsługi w tandemach serwerów z powtórną obsługą i blokadami
Autorzy:
Oniszczuk, W.
Powiązania:
https://bibliotekanauki.pl/articles/341163.pdf
Data publikacji:
2012
Wydawca:
Politechnika Białostocka. Oficyna Wydawnicza Politechniki Białostockiej
Tematy:
powtórna obsługa
strategie obsługi
analityczne modele sieci
feedback and blocking
service strategy
network performance analysis
Opis:
In this paper, we consider specialized tandem server networks with finite buffer capacities, feedback and intelligent service strategy, which are one of the key elements in ensuring quality of service in computer systems. Here, the two strategies of tasks service are presented and compared. Generally, in this paper two models of linked computer servers with blocking and with feedback service according to the HOL priority scheme are investigated. These kinds of models, describe behaviour of computer tandem networks, exposed to open Markovian queuing models with blocking. These models which are illustrated below are very accurate, derived directly from two-dimensional state graphs. In our examples, the performance is calculated and numerically illustrated by regulating intensity of the input flow and varying buffer capacities.
W artykule poruszono zagadnienia związane z modelowaniem sieci serwerów z buforami o ograniczonej pojemności, powtórną priorytetową obsługą, które są ważnym elementem, w badaniu parametrów jakości obsługi w systemach komputerowych. Do badań i analizy wybrano dwie strategie powtórnej obsługi zadań w pierwszym z serwerów. Modele analityczne takich sieci stanowisk obsługi przedstawione są tutaj, jako otwarte markowowskie systemy kolejkowe z blokadami,. Tego typu modele w sposób najbardziej pełny odwzorowują ewolucję takich systemów w czasie. Zbudowano dwuwymiarowe grafy takich modeli tandemów oraz na przykładach pokazano jak zmieniają się ich miary wydajności i jakości obsługi, gdy zmienia się intensywność wejściowego strumienia i pojemność buforów.
Źródło:
Zeszyty Naukowe Politechniki Białostockiej. Informatyka; 2012, 9; 93-104
1644-0331
Pojawia się w:
Zeszyty Naukowe Politechniki Białostockiej. Informatyka
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A Comparison of the Sensitivity and Performance Characteristics of Melt-pour Explosives with TNT and DNAN Binder
Autorzy:
Trzciński, W.
Cudziło, S.
Dyjak, S.
Nita, M.
Powiązania:
https://bibliotekanauki.pl/articles/358284.pdf
Data publikacji:
2014
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Przemysłu Organicznego
Tematy:
insensitive explosives
thermal analysis and performance
Opis:
Some sensitivity and performance characteristics for pure 2,4-dinitroanisole (DNAN) and 2,4,6-trinitrotoluene (TNT), as well as for meltpour composites containing 40% of DNAN or TNT, 20% of RDX, and 40% of NTO were determined (under the same conditions) and compared.
Źródło:
Central European Journal of Energetic Materials; 2014, 11, 3; 443-455
1733-7178
Pojawia się w:
Central European Journal of Energetic Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A tool for designing and evaluating the temporal work patterns of human and artificial agents
Autorzy:
Gladden, Matthew E.
Powiązania:
https://bibliotekanauki.pl/articles/432197.pdf
Data publikacji:
2014
Wydawca:
Wydawnictwo Uniwersytetu Ekonomicznego we Wrocławiu
Tematy:
Performance analysis
fractal dimension
management of computing and information systems
working hours
artificial intelligence (incl. robotics)
Opis:
The measure of availability that is often used to compare the dependability of computer-based systems is imperfect, insofar as two systems with the same availability can display quite different performance characteristics. Here we develop a new fractal temporal measure for work effort that offers insights into a system’s performance not captured by the traditional availability measure. Moreover, we show that this fractal measure can be used to compare the temporal work patterns of both human and artificial agents and identify their unique strengths and weaknesses. Such new comparative tools will become increasingly important as the development of more sophisticated artificial agent technologies creates situations in which particular functions within an organization can be carried out either by human or artificial personnel.
Źródło:
Informatyka Ekonomiczna; 2014, 3(33); 61-76
1507-3858
Pojawia się w:
Informatyka Ekonomiczna
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Zastosowanie DMA w układach szeregowej transmisji danych
The use of DMA in serial data transmission systems
Autorzy:
Sowiński, D.
Kciuk, M.
Powiązania:
https://bibliotekanauki.pl/articles/269013.pdf
Data publikacji:
2017
Wydawca:
Politechnika Gdańska. Wydział Elektrotechniki i Automatyki
Tematy:
szeregowa transmisja danych
DMA
testowanie komunikacji
serial duplex transmission
direct memory access
communication testing
performance analysis
Opis:
W artykule przedstawiono projekt układu wykorzystującego w transmisji danych kontroler DMA. Głównym zadaniem kontrolera jest odciążenie jednostki centralnej użytego mikrokontrolera przez bezpośredni dostęp do jego pamięci. Badanie transmisji przeprowadzono za pomocą analizatora stanów logicznych LOGIC8 wraz z dedykowanym do niego oprogramowaniem producenta. Analiza otrzymanych wyników potwierdza, iż uzyskana szybkość transmisji danych przy zastosowaniu kontrolera DMA jest o 16% większa niż w przypadku klasycznej obsługi procesu komunikacji z zastosowaniem procesora.
In this paper authors proved that DMA controller have positive effect on the serial transmission process. Firstly, was presented a scheme with principles of the device using DMA controller. The stream of data sent from sensor can use one of four modes, it means: without DMA, with DMA on sensor side, with DMA on PC side and with DMA on both sides. The main device was assembled with following modules: LSM9DS0 sensor as a data generator, STM32F4 ARM microcontroller for data transmssion, USART-USB converter and PC computer as a data reader. The main module is the ARM microcontroller which controls whole process. Additionally, authors present used transmission interfaces working between the modules. In research 18 kB of data is send from the sensor to the computer and time of data transmission is measured. There are different structures of data frame in range of 3000 buffers containing 6b of data to 6 buffers containing 3000b. The speed for the SPI and UART amounted to 5.25 Mb/s. The times for the case: 1018 executed delay loops are presented in Table 2 and are given in milliseconds. In result transmission fully controlled by DMA is 16,6% faster than CPU controlled one (pulling mode) and 5,2% faster than CPU utilizing interrupts. Transmission controlled by CPU utilizing interrupts is 12,1% faster than CPU controlled one (in pulling mode). The fastest transmission achieved 60% of theoretical transmission speed.
Źródło:
Zeszyty Naukowe Wydziału Elektrotechniki i Automatyki Politechniki Gdańskiej; 2017, 54; 211-215
1425-5766
2353-1290
Pojawia się w:
Zeszyty Naukowe Wydziału Elektrotechniki i Automatyki Politechniki Gdańskiej
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Logistics management as a system constraint
Zarządzanie logistyczne jako ograniczenie systemowe
Autorzy:
Hrusecka, D.
Pivnicka, M.
Borges Lopes, R.
Powiązania:
https://bibliotekanauki.pl/articles/404866.pdf
Data publikacji:
2017
Wydawca:
Politechnika Częstochowska
Tematy:
logistics
production process
material flow analysis
simulation modelling
performance analysis
logistyka
proces produkcyjny
analiza przepływu materiałów
modelowanie symulacyjne
analiza wydajności
Opis:
This paper presents a comparative simulation model of several logistic systems and their impact on operational performance. It stresses the importance of logistic processes and their management in the context of lean production and the theory of constraints. The main goal of our experimental study is to prove how significantly supporting logistic processes can influence production process performance in situations where logistic management represents a system constraint. More specifically, our study considers the capacity of handling units, and their impact on material flow continuity and efficiency. The experimental model is based on real data that was acquired by the authors over the last several years during their research and practical experience. Our results are presented in the form of software statistics that were provided after the experiment and compared with the set hypotheses. The experimental study has shown that a managerial decision to increase the capacity of handling units does not always result in the expected behaviour pattern.
Niniejszy artykuł prezentuje porównawczy model symulacji kilku systemów logistycznych i ich wpływ na wydajność operacyjną. Podkreśla znaczenie procesów logistycznych i zarządzania nimi w kontekście szczupłej produkcji i teorii ograniczeń. Głównym celem naszych badań eksperymentalnych jest udowodnienie, jak znaczne wspieranie procesów logistycznych może wpłynąć na wydajność procesu produkcyjnego w sytuacjach, w których zarządzanie logistyczne stanowi ograniczenie systemu. Ujmując problem bardziej szczegółowo, nasze badanie uwzględnia pojemność jednostek manipulacyjnych oraz ich wpływ na ciągłość przepływu materiału i wydajność. Eksperymentalny model oparty jest na rzeczywistych danych, które zostały zebrane przez autorów w ciągu ostatnich kilku lat w trakcie ich badań i praktycznych doświadczeń. Wyniki przedstawione zostały w formie statystyk oprogramowania dostarczonych po eksperymencie i porównanych z założonymi hipotezami. Badanie eksperymentalne wykazało, że decyzja menedżerska, dotycząca zwiększenia pojemności jednostek manipulacyjnych, nie zawsze prowadzi do oczekiwanego wzorca zachowań.
Źródło:
Polish Journal of Management Studies; 2017, 15, 1; 76-87
2081-7452
Pojawia się w:
Polish Journal of Management Studies
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of the Yarn Formation Process on the Characteristics of Viscose Fabric Made of Vortex Coloured Spun Yarns
Wpływ procesu formowania przędzy typu vortex na właściwości dzianin wiskozowych wykonanych z przędz barwionych
Autorzy:
Zou, Z. Y.
Powiązania:
https://bibliotekanauki.pl/articles/232365.pdf
Data publikacji:
2015
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Biopolimerów i Włókien Chemicznych
Tematy:
Vortex spinning
yarn formation process
fabric
performance analysis
przędza typu vortex
proces formowania przędzy
tkaniny
analiza wydajności
Opis:
In this study, based on the Box-Behnken design, regression statistical analysis is introduced to evaluate the influence of yarn formation process variables (nozzle pressure, yarn delivery speed and yarn count) on the properties (breaking strength, air permeability rate, dynamic drape coefficient and mass loss rate) of viscose fabric fabricated from vortex colored spun yarns. Quadratic regression models for response variables affected by different combinations of model items are given. Research results show that the air permeability rate and dynamic drape coefficient for viscose fabric decreases with an increase in the yarn delivery speed from 320 to 380 m/min, while the fabric mass loss rate and fabric breaking strength are less affected by the yarn delivery speed. The mass loss rate of viscose fabric increases, reaches a peak, and then decreases with increasing nozzle pressure, while its dynamic drape coefficient, affected by the nozzle pressure, takes on the opposite trend. However, nozzle pressure has less significant effects on fabric breaking strength and fabric air permeability. The air permeability rate and mass loss rate of viscose fabric increases firstly and then decreases with a decreasing yarn count, while the effect of yarn count on the fabric breaking strength and dynamic drape coefficient exhibits an opposite trend. Decreasing the yarn count makes the fabric dynamic drape coefficient drop firstly and then augment.
W przedstawionej pracy, bazując na metodzie Box-Behnken zastosowano statystyczną analizę regresji dla oceny wpływu zmiennych procesu formowania przędzy (ciśnienie w dyszy, szybkość dostarczania przędzy i masa liniowa przędzy) na właściwości wiskozowych dzianin wytworzonych z kolorowych przędz typu vortex (wytrzymałość na zerwanie, przepuszczalność powietrza, dynamiczny współczynnik układalności, utratę masy). Podano współczynniki regresji dla różnych kombinacji zmiennych procesu. Wyniki badań wskazują, że przepuszczalność powietrza i dynamiczny współczynnik układalności dla wiskozowych dzianin zmniejszają się ze wzrostem prędkości dostarczania przędzy z 320 m/min do 380 m/min, podczas gdy współczynnik utraty masy dzianin i ich wytrzymałość są mniej uzależnione od prędkości dostarczania przędzy. Współczynnik utraty masy dzianin wiskozowych wzrasta i osiąga maksimum a następnie zmniejsza się ze wzrostem ciśnienia w dyszy, podczas gdy dynamiczny współczynnik układalności wykazuje zachowanie odwrotne. Jednakże ciśnienie w dyszy ma mniejszy wpływ na wytrzymałość i przepuszczalność powietrza. Przepuszczalność powietrza i utrata masy dzianin wiskozowych wzrastają początkowo, a następnie zmniejszają się ze wzrostem masy liniowej, podczas gdy efekt zmian masy liniowej na wytrzymałość i dynamiczny współczynnik układalności ma tendencję przeciwną.
Źródło:
Fibres & Textiles in Eastern Europe; 2015, 3 (111); 58-63
1230-3666
2300-7354
Pojawia się w:
Fibres & Textiles in Eastern Europe
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
CONVENTION BUREAUX’ ROLES IN THE GLOBAL MEETINGS INDUSTRY – A METHODOLOGICAL FRAMEWORK
Role biur kongresowych w globalnym przemyśle spotkań – ramy metodologiczne
Autorzy:
Piechota, Natalia
Powiązania:
https://bibliotekanauki.pl/articles/439581.pdf
Data publikacji:
2017
Wydawca:
Akademia Finansów i Biznesu Vistula
Tematy:
convention bureau
meetings industry
Importance-Performance Analysis
IPA
institutions
biuro kongresowe
przemysł spotkań
analiza istotności-osiągnięć
instytucje
Opis:
The aim of the paper is to present a methodological aspect of research on convention bureaux’ roles in the meetings industry. The online survey was conducted among almost 300 cities listed in the ICCA’s ranking. Convention bureau managers were asked about the tasks of every convention bureau and the performance of their own institution. Every task was incorporated into one of the main five roles of convention bureau: an agent, a coordinator, a leader, a representative, and a marketer. The research method was based on the IPA (Importance-Performance Analysis).
Celem pracy jest prezentacja metodologicznego aspektu badań dotyczących roli biur kongresowych w przemyśle spotkań. Przeprowadzony w sieci sondaż objął prawie 300 miast z rankingu ICCA. Menadżerów biur kongresowych zapytano o zadania każdego biura i działalność ich instytucji. Każde zadanie przypisano jednej z pięciu głównych ról biura kongresowego: agenta, koordynatora, przewodniczącego, przedstawiciela i sprzedawcy. Metodę badawczą oparto na analizie istotności-osiągnięć (IPA).
Źródło:
Kwartalnik Naukowy Uczelni Vistula; 2017, 4(54); 198-208
2084-4689
Pojawia się w:
Kwartalnik Naukowy Uczelni Vistula
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
In-situ performance evaluation of photovoltaic solar water pumping system in the rural region
Autorzy:
Maka, Ali Omar
Chaudhary, Tariq Nawaz
Hasan, Abdulazez
Gatou, Ahmed
Powiązania:
https://bibliotekanauki.pl/articles/95219.pdf
Data publikacji:
2019
Wydawca:
Politechnika Koszalińska. Wydawnictwo Uczelniane
Tematy:
water pumping
performance analysis
rural region
photovoltaic solar
pompownia wody
analiza wydajności
region wiejski
energia słoneczna fotowoltaiczna
Opis:
The Photovoltaic solar cells convert the radiant energy from the Sun directly to electricity. Solar photovoltaic systems can help to fulfil the entire energy demands in rural areas by harnessing all the opportunities and potentials. The water is an important element in the life of plants, animals and human being. In this paper, it has been studied that solar energy could be used for water pumping applications such as providing water to rural and remote areas. It is being practiced in south Libya. The data is being collected over two years by measuring the water flow on daily basis at pumping head of (35m). In addition, this presents an evaluation of PV system in water pumping and piping systems and estimation of pumping energy cost. The solar pumping systems depend on water flow rate, pumping head and solar irradiance. The system components contain inverter, pump and PV generator. Besides, the effects of the climate and operating conditions on the performance of PV pumping systems has been discussed.
Źródło:
Journal of Mechanical and Energy Engineering; 2019, 3, 1; 69-76
2544-0780
2544-1671
Pojawia się w:
Journal of Mechanical and Energy Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Multiple criteria and multiple periods performance analysis: the comparison of telecommunications sectors in the Maghreb countries
Autorzy:
Colson, G.
Sabri, K.
Mbangala, M.
Powiązania:
https://bibliotekanauki.pl/articles/308878.pdf
Data publikacji:
2006
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Tematy:
case study
multiple criteria decision aid
Promethee
Malmquist DEA TFP index
African telecommunications reforms
dynamic performance analysis
Opis:
In four Maghreb countries (Algeria, Morocco, Mauritania and Tunisia), a considerable improvement of the situation of the telecommunication operators has been noticed during the nineties. The evolution in these countries was very different depending on their economic policies, their effort of reorganization of their telecommunication sector and their technological change. Theses differences will be exhibited and analysed by comparing the operators' performances over a decade (1992-2001). A first approach is based on the Malmquist DEA TFP index for measuring the total factors productivity change, decomposed into technical efficiency change and technological changes. Second, using the Promethee II method and the software ARGOS, a multiple criteria analysis is performed, taking into account a larger scope of analysis. A main issue is that the general performance ranking of sets of operators by country is almost the same according to the two methods, although the variables of inputs and output used for the index of Malmquist are different and narrower in the considered scope than the chosen families of criteria used in method Promethee and software ARGOS. Both methods of analysis provide however complementary useful detailed information, especially in discriminating the technological and management progresses for Malmquist and the two dimensions of performance for Promethee: that are the service to the community and the enterprises performances, often in conflict.
Źródło:
Journal of Telecommunications and Information Technology; 2006, 4; 67-80
1509-4553
1899-8852
Pojawia się w:
Journal of Telecommunications and Information Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The use of importance/performance analysis in evalution of tranposport sevice
Autorzy:
Ingaldi, M.
Kotus, M.
Powiązania:
https://bibliotekanauki.pl/articles/114937.pdf
Data publikacji:
2015
Wydawca:
Stowarzyszenie Menedżerów Jakości i Produkcji
Tematy:
service quality
transport service
Importance/Performance analysis
IPA
jakość usług
usługi transportowe
badanie satysfakcji klienta
analiza IPA
Opis:
Services quality, because of their specificity, it is difficult to evaluate, especially since there is no their materiality, it can't be seen. Usually the gap between the expectations of customer and his perceptions in relation to a particular service is observed. In the chapter evaluation of transport service quality in chosen transport company in south of Poland was made. For this purpose the Importance/Performance analysis was used. First of all a survey was created. The same survey and its results were already used to evaluate quality management according to Servqual method in another paper (INGALDI M., WYWIAL S. 2015). In this case pairs of evaluations (Performance; Importance) were placed on Importance/Performance map. In this way the evaluation of the transport service was possible.
Źródło:
Zeszyty Naukowe. Quality. Production. Improvement; 2015, 2 (3); 124-136
2544-2813
Pojawia się w:
Zeszyty Naukowe. Quality. Production. Improvement
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analiza wydajności szkieletów programistycznych Laravel oraz Yii2 opartych na wzorcu architektonicznym MVC oraz języku PHP
Performance analysis of Laravel and Yii2 frameworks based on the MVC architectural pattern and PHP language
Autorzy:
Węgrzecki, Konrad Sławomir
Dzieńkowski, Mariusz
Powiązania:
https://bibliotekanauki.pl/articles/24083396.pdf
Data publikacji:
2022
Wydawca:
Politechnika Lubelska. Instytut Informatyki
Tematy:
Laravel
Yii2
szkielety programistyczne
analiza wydajności
programming frameworks
performance comparative analysis
Opis:
Przedmiotem pracy jest analiza wydajnościowa dwóch szkieletów programistycznych języka PHP w najnowszych wersjach – Laravel 9.6 i Yii 2.0.45. Została ona przeprowadzona przy pomocy przygotowanych do tego celu aplikacji testowych, posiadających identyczne funkcjonalności. Aplikacjegenerują wszystkie liczby pierwsze z podanego zakresu oraz tworzą system rankingowy książek, oparty na operacjach CRUD. Jako kryterium porównawcze przyjęto czas obsługi żądań przez każdą aplikację. Do sprawdzenia wydajności użyto dedykowanych szkieletom tzw. debugbarów – dolnych pasków wyświetlających informację o wykonanym żądaniu. Wyniki uzyskane po przeprowadzonych badaniach wykazały, że biorąc pod uwagę wydajność, Laravel jest lepszą technologią niż Yii do budowy aplikacji internetowych.
The subject of this paper is the performance analysis of two PHP programming frameworks in the latest versions - Laravel 9.6 and Yii 2.0.45. It was carried out with the help of test applications prepared for this purpose, which have identical functionalities: they generate all prime numbers from a given range and create a book ranking system based on CRUD operations. The request handling time of each application was used as a comparison criterion. To check the performance, dedicated debugbars - bottom bars displaying information about the executed request - were used. The results obtained after the tests showed that in terms of performance, Laravel is a better technology than Yii for building web applications.
Źródło:
Journal of Computer Sciences Institute; 2022, 24; 265--272
2544-0764
Pojawia się w:
Journal of Computer Sciences Institute
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Process of market strategy optimization using distributed computing systems
Autorzy:
Nowicki, W.
Bera, A.
Błaszyński, P.
Powiązania:
https://bibliotekanauki.pl/articles/407280.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
economic systems
financial system
moving average models
optimization problems
performance analysis
prediction methods
prediction problems
project management
work organization
Opis:
If market repeatability is assumed, it is possible with some real probability to deduct short term market changes by making some calculations. The algorithm, based on logical and statistically reasonable scheme to make decisions about opening or closing position on a market, is called an automated strategy. Due to market volatility, all parameters are changing from time to time, so there is need to constantly optimize them. This article describes a team organization process when researching market strategies. Individual team members are merged into small groups, according to their responsibilities. The team members perform data processing tasks through a cascade organization, providing solutions to speed up work related to the use of remote computing resources. They also work out how to store results in a suitable way, according to the type of task, and facilitate the publication of a large amount of results.
Źródło:
Management and Production Engineering Review; 2015, 6, 4; 87-93
2080-8208
2082-1344
Pojawia się w:
Management and Production Engineering Review
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analiza, ocena i doskonalenie jakości usług – case study
Autorzy:
Kowalik, K.
Klimecka-Tatar, D.
Powiązania:
https://bibliotekanauki.pl/articles/114846.pdf
Data publikacji:
2018
Wydawca:
Stowarzyszenie Menedżerów Jakości i Produkcji
Tematy:
Impact&Effort Matrix
Importance-Performance Analysis
improvement
service quality
Servqual method
doskonalenie
jakość usług
macierz Impact&Effort
metoda Servqual
Opis:
The objectives of the analysis conducted and described in this paper has been to present the practical application of service quality improvement’s chosen methods based on case study. The first part of the article contains the theoretical framework of service quality and its improvement. Afterwards, the results of empirical research have been presented. First of all, to analyze the process, the Servqual method has been chosen. To choose the most important areas of improvement the Importance-Performance Analysis’ results have been used. Furthermore, in the Impact and Effort Matrix the selected improvement ideas have been included.
Celem artykułu jest przedstawienie praktycznego zastosowania metod doskonalenia jakości usług w oparciu o case study. Pierwsza część opracowania zawiera teoretyczne ramy jakości usług i jej doskonalenia. Następnie zaprezentowano wyniki badań empirycznych: analizę jakości usługi w oparciu o metodę Servqual, identyfikację kluczowych obszarów doskonalenia z wykorzystaniem metody Importance-Performance oraz analizę możliwości wdrożenia poszczególnych działań doskonalących poprzez ich prezentację na macierzy Impact&Effort.
Źródło:
Zeszyty Naukowe. Quality. Production. Improvement; 2018, 2 (9); 92-102
2544-2813
Pojawia się w:
Zeszyty Naukowe. Quality. Production. Improvement
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Fire resistance assessment of the long-span steel truss girder
Ocena odporności ogniowej stalowej kratownicy o dużej rozpiętości
Autorzy:
Woźniczka, P.
Powiązania:
https://bibliotekanauki.pl/articles/231439.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
odporność ogniowa
hala wielkokubaturowa
rozpiętość duża
pożar
analiza właściwości
fire resistance
large-space hall
long-span
fire
performance analysis
Opis:
The performance-based analysis of the large-space steel sports hall is presented. Load-bearing structure of the hall consists of spatial long-span truss girders that are made of modern square hollow sections. Both fire development analysis and mechanical response analysis are discussed in detail. Fire Dynamics Simulator and Safir programs are used. Main focus is put on the factors that could affect the final fire resistance of the structure. Uniform and non-uniform heating, different boundary conditions and local imperfections are taken into account. Structures with and without fireproof insulation are considered. Values of the critical temperature, failure modes and fire resistance estimated for various cases are presented. Computer simulations were carried out both for fire growth and decay phase. As a result it is clearly shown that some reductions of the required fireproof insulation are possible. Moreover, the structure without complete traditional fireproof insulation is able to survive not only the direct fire exposure but also the cooling phase.
Aktualne normy europejskie EN 1991-1-2 i EN 1993-1-2 dopuszczają do stosowania różnorodne metody oceny odporności ogniowej, które mogą być wykorzystane zarówno w odniesieniu do pojedynczych elementów jak i całych ustrojów nośnych. Podejście obliczeniowe bazujące na właściwościach danej strefy pożarowej (tzw. performance-based approach) powinno uwzględniać zarówno analizę rozwoju pożaru jak i odpowiedzi mechanicznej konstrukcji. Wykorzystanie tego typu metody może być szczególnie istotne w przypadku obiektów o stosunkowo dużych kubaturach stref pożarowych, takich jak na przykład wielkogabarytowe hale o konstrukcji stalowej. Możliwy jest wówczas nie tylko lepszy wgląd w zachowanie się konstrukcji w warunkach pożaru ale istnieje także możliwość dostosowania izolacji ogniochronnej do rzeczywistego zapotrzebowania. Jednocześnie przeprowadzenie kompletnych symulacji typu "performance-based" jest niezwykle czasochłonne oraz wymaga połączenia wiedzy z zakresu inżynierii pożarowej oraz inżynierii lądowej. Dodatkowo wpływ niektórych czynników (takich jak przykładowo lokalne imperfekcje łukowe) na prognozowaną odporność ogniową nie został do tej pory w pełni rozpoznany. W tej sytuacji w artykule przedstawiono opartą na charakterystyce danej strefy pożarowej analizę odporności ogniowej wielkogabarytowej hali sportowej o konstrukcji stalowej. Rozpatrywana hala charakteryzuje się zarówno znacznymi wymiarami w rzucie (70m x 60m) jak i stosunkowo dużą wysokością (16.5m). Główny ustrój nośny składa się z trójpasowych dźwigarów kratowych o rozpiętości 60m, rozmieszczonych w rozstawie co 6m. Obliczenia rozwoju pożaru wykonano za pomocą programu Fire Dynamics Simulator. Do opracowania analizy odpowiedzi mechanicznej konstrukcji wykorzystano program Safir.
Źródło:
Archives of Civil Engineering; 2020, 66, 2; 63-75
1230-2945
Pojawia się w:
Archives of Civil Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Pomiar efektywności działań marketingowych na przykładzie organizacji badawczej w Polsce
Marketing activities effectiveness measurement: The case of a research organisation in Poland
Autorzy:
Walasik, Marzena
Mizerska, Paulina
Powiązania:
https://bibliotekanauki.pl/articles/18055590.pdf
Data publikacji:
2023-05-23
Wydawca:
Szkoła Główna Handlowa w Warszawie. Kolegium Zarządzania i Finansów
Tematy:
Key performance indicators (KPI)
marketing performance analysis
marketing goals
research organisation
marketing performance indicators
kluczowe mierniki dokonań (KPI)
analiza efektywności działań marketingowych
cele marketingowe
organizacja badawcza
mierniki efektywności marketingowej
Opis:
Pomiar efektywności działań marketingowych stanowi obecnie kluczowy element zarządzania organizacją. Pozwala ocenić skuteczność wdrożonych narzędzi marketingowych, precyzyjnie wyznaczać cele dla zespołów oraz uzasadnić celowość ponoszonych nakładów. Istotnym problemem jest jednak selekcja odpowiednich mierników, które powinny być dopasowane do celów strategicznych oraz ogólnego charakteru prowadzonej działalności. Kluczowy jest też ich prawidłowy pomiar i interpretacja. Mierniki efektywności mogą stanowić istotne wsparcie dla procesów zarządzania w organizacjach badawczych, które coraz częściej inwestują w działania marketingowe, oferując na zasadach komercyjnych wyniki zrealizowanych badań naukowych. W ramach niniejszego opracowania najpierw zdefiniowano kluczowe mierniki dokonań i odróżniono je od innych narzędzi wykorzystywanych w praktyce biznesowej. Następnie zaprezentowano podział mierników, które są najczęściej wykorzystywane podczas oceny aktywności marketingowej podmiotu. Na podstawie dokonanej analizy zaproponowano model doboru mierników dokonań dla organizacji badawczej.
Nowadays, the measurement of marketing activities effectiveness constitutes the fundamental element of any organisation’s management practice. It allows not only for marketing tools efficiency judgement, but it also constitutes a point of reference, to set the goals accurately. It also helps to determine, whether the investment decisions are reasonable. However, the appropriate selection of indicators proves to be the key challenge, as they need to be aligned with organisation’s priorities and reflect the general nature of pursued business. Appropriate indicators measurement and interpretation are no less essential. Performance indicators can be utilised as important tools, supporting management processes within the research organisations, which are currently putting more investment in marketing activities, while offering new research results to the market on commercial terms. The paper starts with a definition of key performance indicators and differentiation of other tools, that can be utilised within the business practice. Next, the possible categorisation of key performance indicators, which are most commonly used in marketing area, was presented. On the basis of the analysis performed, the model of key performance indicators selection fora research organisation was proposed.
Źródło:
Studia i Prace Kolegium Zarządzania i Finansów; 2023, 188; 83-100
1234-8872
2657-5620
Pojawia się w:
Studia i Prace Kolegium Zarządzania i Finansów
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
How transit improvements are perceived by passengers? Results of a before-after customer satisfaction survey
Autorzy:
Sahraei, Mina
Mesbah, Mohamed
Habibian, Meeghat
Saeidi, Tara
Soltanpour, Amirali
Powiązania:
https://bibliotekanauki.pl/articles/27311783.pdf
Data publikacji:
2023
Wydawca:
Polska Akademia Nauk. Czasopisma i Monografie PAN
Tematy:
improvements of transports
passengers' satisfaction
structural equation modelling
importance-performance analysis
usprawnienia transportu
zadowolenie pasażerów
modelowanie równań strukturalnych
analiza ważności
Opis:
Although customer satisfaction surveys are widely utilized by transit agencies, there are limited analyses in the literature on the perception of passengers as a result of service improvements. A before-after study can help to evaluate the effect of changes from customer’s points of view and thus guarantee a continuous improvement in the service. In this paper, customer satisfaction was directly observed through a Customer Satisfaction Survey (CSS) before and after certain changes. Furthermore, Structural Equation Modeling (SEM) is utilized to evaluate passenger’s perception of the service attribute importance. Finally, an Importance-Performance Analysis (IPA) is adapted to analyze the changes in satisfaction and importance from the passenger’s perspective on each service attribute. In both before and after cases, a consistent SEM structure is used. The follow-up IPA provides transit agencies with priorities to improve service attributes and helps managers to devote their resources to key attributes that matter to the riders. Metro line 3 in Tehran was selected as the case study which is 33.7 km long with 25 stations. Two surveys were performed one before (with the sample size of 300), and one after (with the sample size of 384) a set of changes the most important of which was a headway reduction. The SEM was developed with five latent variables of main service, comfort, information, protection, and physical appearance. This structure was assessed on both the before and after data collections and showed to be valid. Security at the station and security on board were the most important service attributes in both waves according to their factor loadings, while ethics and behavioral messages had the smallest factor loading and the least importance. Comparing the attributes in both surveys suggested that reducing the headway was effective, although it did not seem to be sufficient for enhancing the overall customer satisfaction and improvements need to be continued.
Źródło:
Archives of Transport; 2023, 65, 1; 56--66
0866-9546
2300-8830
Pojawia się w:
Archives of Transport
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analiza danych typowego roku meteorologicznego wykorzystywanych w symulacjach komputerowych budynków o wysokiej sprawności funkcjonowania w projektowaniu architektonicznym
Analysis of typical meteorological year data used in computer simulations of high-performance buildings in architectural design
Autorzy:
Masły, Dariusz
Powiązania:
https://bibliotekanauki.pl/articles/1848256.pdf
Data publikacji:
2021
Wydawca:
PWB MEDIA Zdziebłowski
Tematy:
rok meteorologiczny typowy
TRM
symulacja komputerowa
sprawność funkcjonowania budynku
BPA
projektowanie architektoniczne
typical meteorological year
TMY
building performance analysis
architectural design
Opis:
W artykule opisano projekt mający na celu komputerowe przeanalizowanie oraz porównanie dostępnych danych godzinowych typowego roku meteorologicznego (TRM), dla Krakowa Balic, opracowanych przez IMiGW, dostępnych w materiałach archiwalnych ministerstwa właściwego do spraw budownictwa i mieszkalnictwa (ISO) oraz opracowanych w ramach projektów badawczych wykonanych przez ASHRAE. Dane te są wykorzystywane w symulacjach komputerowych na potrzeby projektowania architektonicznego budynków o wysokiej sprawności funkcjonowania. W danych IMiGW oraz opracowanych na ich podstawie plikach ISO zauważono nieprawidłowość. Całkowite natężenie promieniowania słonecznego w okresie letnim, obliczone z danymi IMiGW dla różnych orientacji elewacji – południowej, północnej, wschodniej i zachodniej, jest najwyższe na elewacji wschodniej. Jest wyższe od natężenia na elewacji południowej.
The article describes a project aimed at computer analysis and comparison of the available hourly data of a Typical Meteorological Year (TMY), for Kraków Balice, developed by IMiGW, available in the archival materials of the ministry responsible for construction and housing (ISO) and developed as part of research projects carried out by ASHRAE. This data is used in computer simulations for the architectural design of high-performance buildings. An irregularity was noticed in the IMiGW data and the ISO files prepared on their basis. The total solar radiation in the summer, calculated with the data of the IMiGW for various facade orientations - south, north, east and west, is the highest on the east-facing facade. It is higher than the radiation on the southern facade.
Źródło:
Builder; 2021, 25, 7; 74-76
1896-0642
Pojawia się w:
Builder
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Social Media Adoption for Social CRM in Higher Education: an Insight from Indonesian Universities
Autorzy:
Meyliana, P
Hidayanto, Achmad Nizar
Budiardjo, Eko K.
Powiązania:
https://bibliotekanauki.pl/articles/633697.pdf
Data publikacji:
2015
Wydawca:
Uniwersytet Marii Curie-Skłodowskiej. Wydawnictwo Uniwersytetu Marii Curie-Skłodowskiej
Tematy:
Social Media, Web 2.0, Social CRM, Non-exhaustive Sophistication Index (SI), Shannon entropy, Importance-Performance Analysis (IPA), Education, Synergy, Research
Opis:
A high usage of social media and web 2.0 in Indonesia creates an opportunity for Indonesian universities to understand their customers’ demands and needs. By considering social media and web 2.0 technology as an important role for the application of social customer relationship management (social CRM), this research is intended to evaluate the adoption and application level of social media and web 2.0 by universities in Indonesia. We accomplish an observation towards websites and web 2.0 and social media features, which are used by 58 universities in Jakarta, to be analyzed using non-exhaustive Sophistication Index. In addition, we execute a survey as well to take a look on university principals’ perception towards the practice of web 2.0 and social media application, and analyze it with Importance Performance Analysis (IPA). The result of this research shows that there are some web 2.0 and social media features which need to be utilized more frequently by universities, though most of these features have been working optimally.
Źródło:
International Journal of Synergy and Research; 2015, 4, 2
2083-0025
Pojawia się w:
International Journal of Synergy and Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Performance analysis of native and cross-platform mobile applications
Analiza wydajności natywnych i wieloplatformowych aplikacji mobilnych
Autorzy:
Grzmil, P.
Skublewska-Paszkowska, M.
Łukasik, E.
Smołka, J.
Powiązania:
https://bibliotekanauki.pl/articles/408860.pdf
Data publikacji:
2017
Wydawca:
Politechnika Lubelska. Wydawnictwo Politechniki Lubelskiej
Tematy:
mobile application
cross-platform mobile application
performance analysis of mobile application development
aplikacja mobilna
aplikacja mobilna wieloplatformowa
analiza wydajności wytwarzania aplikacji mobilnych
Opis:
This article presents the performance analysis of a cross-platform mobile application implemented with Xamarin and two native applications for Android and iOS platforms. The results concerning the time analysis for selected activities were compared in order to determine whether cross-platform tools are worth using in mobile application development. Native applications achieved better performance, however in some cases the cross-platform approach allows for significant development time reduction without deterioration in user experience.
Artykuł przedstawia analizę wydajności mobilnej aplikacji wieloplatformowej utworzonej za pomocą technologii Xamarin oraz dwóch natywnych dla platformy Android i iOS. Wyniki dotyczące analizy czasów wykonywania wybranych czynności zostały porównane, aby odpowiedzieć na pytanie, czy warto używać rozwiązań wieloplatformowych w wytwarzaniu aplikacji mobilnych. Aplikacje natywne osiągnęły lepsze wyniki, jednakże w pewnych scenariuszach wykorzystanie technik wieloplatformowych pozwoli na znaczne oszczędności czasu, bez spadku poziomu wrażeń odbieranych przez użytkownika.
Źródło:
Informatyka, Automatyka, Pomiary w Gospodarce i Ochronie Środowiska; 2017, 7, 2; 50-53
2083-0157
2391-6761
Pojawia się w:
Informatyka, Automatyka, Pomiary w Gospodarce i Ochronie Środowiska
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analiza porównawcza szkieletów programistycznych języka Java: Spring Boot, Micronaut oraz Quarkus
The comparative analysis of Java frameworks: Spring Boot, Micronaut and Quarkus
Autorzy:
Jeleń, Maciej
Dzieńkowski, Mariusz
Powiązania:
https://bibliotekanauki.pl/articles/2055128.pdf
Data publikacji:
2021
Wydawca:
Politechnika Lubelska. Instytut Informatyki
Tematy:
aplikacja internetowa
szkielety programistyczne języka Java
analiza wydajności
Spring Boot
Micronaut
Quarkus
web application
frameworks of the Java programming language
performance analysis
Opis:
Przedmiotem tej pracy jest analiza porównawcza trzech szkieletów programistycznych do budowy aplikacji interneto-wych dla języka Java: Spring Boot 2.4.4, Micronaut 2.5.4 oraz Quarkus 1.13.4.Final. Przygotowano aplikacje testowe, wyposażone w tą samą funkcjonalność, które wykorzystano w eksperymencie, polegającym na pomiarze czasów odpowiedzi serwera na żądania typu POST, GET, PUT i DELETE – realizujące operacje na bazie danych. Dla każdej aplikacji testowej, powtórzono pięciokrotnie scenariusz, który miał na celu zmierzyć czas obsługi żądań w różnych warunkach obciążeniowych. Podczas każdego powtórzenia zwiększano wielkość obciążenia, które oznaczało średnią liczbę wysyłanych żądań na sekundę przez wirtualnych użytkowników. Równolegle z badaniami wydajności wykonano pomiary niezawodności aplikacji testowych. Niezawodność zdefiniowano jako odsetek żądań wysyłanych do serwera, które zakończyły się niepowodzeniem. W porównaniach wzięto również pod uwagę objętość kodu aplikacji testowych opartych na wybranych szkieletach. Z przeprowadzonych analiz wynikło, że pod względem większości rozpatrywanych w ramach tej pracy kryteriów najlepszym szkieletem programistycznym okazał się Micronaut.
The aim of the work is a comparative analysis of three frameworks designed for building web applications for the Java programming language: Spring Boot 2.4.4, Micronaut 2.5.4 and Quarkus 1.13.4.Final. Test applications were prepared, equipped with the same functionality as used in the experiment consisting in measuring the server response times to a request of POST, GET, PUT and DELETE performing operations on the database. For each test application, the scenario aimed at measuring the time of handling requests under various load conditions was repeated five times. During each repetition of the scenario, the load which was the average number of requests sent per second by virtual users was increased. In parallel with performance tests, the reliability of the test applications was measured. Reliability was defined as the percentage of requests sent to the server that ended in a failure. The comparative analysis also took into consideration the volume of the code of the test applications based on the selected frameworks. The performed analyses showed that in terms of most of the criteria considered in this work Micronaut proved to be the best framework.
Źródło:
Journal of Computer Sciences Institute; 2021, 21; 287--294
2544-0764
Pojawia się w:
Journal of Computer Sciences Institute
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analiza porównawcza szkieletów programistycznych wykorzystujących TypeScript do tworzenia aplikacji serwerowych
Comparative analysis of frameworks using TypeScript to build server applications
Autorzy:
Golec, Marcin
Powiązania:
https://bibliotekanauki.pl/articles/2086211.pdf
Data publikacji:
2022
Wydawca:
Politechnika Lubelska. Instytut Informatyki
Tematy:
szkielety programistyczne TypeScript
node.js
porównanie wydajności
aplikacje serwerowe
Typescript frameworks
performance comparative analysis
server application
Opis:
Przedmiotem badań była analiza porównawcza szkieletów programistycznych, które są przeznaczone do budowaniaaplikacji. Zestawiono ze sobą NestJS (wersja 8.1.1), FoalTS (wersja 2.5.0) oraz Ts.ED (wersja 6.69.1). Został przygotowany eksperyment przeprowadzony według scenariuszy, które skupiały się na czasie odpowiedzi na żądania przez aplikacje testowe. Każda z nich posiadała ten sam zestaw funkcjonalności. Z porównywanych szkieletów najwydajniejszym okazał się NestJS. Osiągał on najlepsze wyniki. Najgorsze wyniki w każdym scenariuszu osiągał Ts.ED, a w szczególności przy większych obciążeniach. Największe różnice przy porównaniu widać w badaniach przeprowadzonych wedługscenariusza opierającego się na żądaniach typu GET, a w szczególności z większą ilością obiektów w odpowiedzi.
The subject of the research was a comparative analysis of programming frameworks that are intended for building applications. NestJS (version 8.1.1), FoalTS (version 2.5.0) and Ts.ED (version 6.69.1) were put together. An experiment was prepared based on scenarios that focused on the response time of test applications to requests. Each of them had the same set of functionalities. NestJS turned out to be the most efficient of the compared skeletons. It achieved the best results. The worst results in each scenario were achieved by Ts.ED, especially with higher loads. The biggest differences in the comparison can be seen in studies conducted according to a scenario based on GET-type requests, and in particular with more objects in response.
Źródło:
Journal of Computer Sciences Institute; 2022, 23; 128--134
2544-0764
Pojawia się w:
Journal of Computer Sciences Institute
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wrocław public transport passengers’ satisfaction survey by means of CSI and IPA
Badanie satysfakcji pasażerów komunikacji miejskiej we Wrocławiu za pomocą CSI i IPA
Autorzy:
Dziaduch, Izabela
Powiązania:
https://bibliotekanauki.pl/articles/24201129.pdf
Data publikacji:
2023
Wydawca:
Fundacja Ekonomistów Środowiska i Zasobów Naturalnych
Tematy:
sustainable development,
public mass transport
services quality
Customer Satisfaction Index
Importance-Performance Analysis
zrównoważony rozwój
publiczny transport zbiorowy
jakość usług
wskaźnik satysfakcji klienta
analiza ważności-realizacji
Opis:
The purpose of this paper was to assess the level of satisfaction of passengers using public transport services in Wrocław and to identify the quality characteristics that the service provider needs to improve if it wants to increase the overall quality of its services. The passenger satisfaction survey was conducted according to the stages of the developed procedure outlined in the article. In pursuit of the stated goal, CSI and IPA were used. The main measurement tool used was a survey questionnaire. The survey was conducted on a sample of 500 respondents, which allows us to trust the results at 95%, assuming an “estimation error” of ± 5%. A total of 14 transport demands were selected to evaluate the level of satisfaction of passengers using services provided by MPK Wrocław. Statistical analysis of the data was carried out using Statistica 13.3 software and using functions and commands available in Microsoft Excel. The results obtained allowed us to conduct a detailed analysis related to the level of the services quality of the Wrocław’s public transport. These results should be used by urban transport organisers and operators to shape their transport offerings, primarily in terms of increasing the quality of transport services. This is very important since it is, among other things, the quality of public mass transport that determines the quality of life of residents, as well as the conditions for economic development of the transport network.
Celem artykułu jest ocena poziomu satysfakcji pasażerów korzystających z usług komunikacji miejskiej we Wrocławiu oraz wskazanie cech jakości, które usługodawca musi poprawić, jeśli chce zwiększyć ogólną jakość świadczonych przez siebie usług. Badanie satysfakcji pasażerów zostało przeprowadzone zgodnie z przedstawionymi w artykule etapami procedury. Dążąc do realizacji przyjętego celu, zastosowano - CSI i IPA. Głównym narzędziem pomiarowym, który zastosowano, był kwestionariusz ankietowy. Badania przeprowadzono na próbie 500 respondentów, co pozwala ufać wynikom na 95% przy założeniu błędu oszacowania na poziomie ± 5%. Ogółem do oceny poziomu satysfakcji pasażerów korzystających z usług świadczonych przez MPK Wrocław wybrano 14 postulatów przewozowych. Respondenci oceniali następujące cechy jakości usług komunikacji miejskiej: dostępność przestrzenna, częstotliwość połączeń, regularność odjazdów, bezpośredniość podróży, prędkość podróży, punktualność odjazdów, niezawodność podróży, czas podróży, bezpieczeństwo, dostępność informacji, koszt podróży, komfort podróży, integracja oraz koszt inwestycji. Statystyczną analizę danych przeprowadzono za pomocą oprogramowania Statistica 13.3 oraz przy użyciu funkcji i poleceń dostępnych w programie Microsoft Excel. Otrzymane wyniki pozwoliły na przeprowadzenie szczegółowej analizy związanej z poziomem jakości usługi. Wyniki te powinny być wykorzystane przez organizatorów i operatorów transportu miejskiego do kształtowania oferty przewozowej, przede wszystkim w aspekcie zwiększenia jakości usług przewozowych. Jest to bardzo istotne, gdyż to właśnie między innymi jakość systemu transportowego decyduje o jakości życia mieszkańców, a także o warunkach rozwoju gospodarczego obszaru objętego planem transportowym.
Źródło:
Ekonomia i Środowisko; 2023, 1; 149--171
0867-8898
Pojawia się w:
Ekonomia i Środowisko
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Holistyczny model analizy funkcjonowania bibliotek szkół wyższych: ocena funkcjonalności, pomiar satysfakcji użytkowników, ocena wpływu i wartości
A holistic model for the analysis of the functioning of libraries at higher education facilities: the assessment of functionality, users satisfaction measurement, assessing the impact and value
Autorzy:
Strzelczyk, Edyta
Powiązania:
https://bibliotekanauki.pl/articles/685393.pdf
Data publikacji:
2019
Wydawca:
Uniwersytet Łódzki. Wydawnictwo Uniwersytetu Łódzkiego
Tematy:
AFBN
pomiar efektywności
wskaźnik „Satysfakcja użytkowników”
badania użytkowników bibliotek
ocena wpływu i wartości bibliotek
Performance Analysis for Polish Research Libraries
academic libraries
performance measurement
“User satisfaction” indicator
library user research
assessing the impact and value of libraries
Opis:
Traditional models of library quality and functionality assessment are mainly based on the use of statistical data and indicators. The need to expand these patterns started to be noticed, taking into account both the recipients of the services, as well as the environment in which the libraries function. The comprehensive analysis of libraries should cover all areas and components of their functioning. The aim of the article is to present a model that is constructed within the framework of the project Performance Analysis for Polish Research Libraries. The model includes: the assessment of functionality by the means of using statistical data and indicators, opinions and evaluations obtained in user satisfaction surveys, as well as the impact and value assessment. Libraries at higher education facilities have been using functionality indicators since 2001, since 2011 work has been carried out concerned with the addition of an indicator (introduced to the forms in 2017), the study of the impact and value of libraries is a new issue. Knowledge on this subject can be derived from international recommendations (ISO 16439) and projects implemented in other countries.
Tradycyjne modele oceny funkcjonowania bibliotek bazują głównie na wykorzystywaniu danych statystycznych i wskaźników. Zaczęto dostrzegać potrzebę rozszerzenia tych wzorców, uwzględniając zarówno odbiorców usług, jak i środowisko, w którym biblioteki działają. Kompleksowa analiza bibliotek powinna obejmować wszystkie obszary i elementy ich funkcjonowania. Celem artykułu jest przedstawienie modelu, który konstruowany jest w ramach projektu Analiza Funkcjonowania Bibliotek Naukowych (dalej: AFBN). Model obejmuje: ocenę funkcjonalności poprzez wykorzystanie danych statystycznych oraz wskaźników, opinie i oceny uzyskane w badaniach satysfakcji użytkowników oraz ocenę wpływu i wartości. Polskie biblioteki szkół wyższych wskaźnikami funkcjonalności posługują się od roku 2001 (początek projektu AFBN), od 2011 r. prowadzone były prace związane z dodaniem wskaźnika „Satysfakcja użytkowników” (wprowadzony do formularzy AFBN w roku 2017), natomiast zagadnienia dotyczące badania wpływu i wartości bibliotek to temat stosunkowo nowy. Wiedzę o nim można czerpać z międzynarodowych zaleceń (ISO 16439) oraz przedsięwzięć realizowanych w innych krajach.  
Źródło:
Acta Universitatis Lodziensis. Folia Librorum; 2019, 2, 29; 13-29
0860-7435
2450-1336
Pojawia się w:
Acta Universitatis Lodziensis. Folia Librorum
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Impact of waste heat recovery systems on energy efficiency improvement of a heavy-duty diesel engine
Autorzy:
Ma, Z.
Chen, H.
Zhang, Y.
Powiązania:
https://bibliotekanauki.pl/articles/240819.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
energy efficiency design index
energy efficiency operational indicator
waste heat recovery system
performance analysis
reduction factor
wskaźnik efektywności energetycznej
wskaźniki eksploatacyjny efektywności energetycznej
system odzysku ciepła odpadowego
analiza wydajności
współczynnik redukcyjny
Opis:
The increase of ship’s energy utilization efficiency and the reduction of greenhouse gas emissions have been high lightened in recent years and have become an increasingly important subject for ship designers and owners. The International Maritime Organization (IMO) is seeking measures to reduce the CO2 emissions from ships, and their proposed energy efficiency design index (EEDI) and energy efficiency operational indicator (EEOI) aim at ensuring that future vessels will be more efficient. Waste heat recovery can be employed not only to improve energy utilization efficiency but also to reduce greenhouse gas emissions. In this paper, a typical conceptual large container ship employing a low speed marine diesel engine as the main propulsion machinery is introduced and three possible types of waste heat recovery systems are designed. To calculate the EEDI and EEOI of the given large container ship, two software packages are developed. From the viewpoint of operation and maintenance, lowering the ship speed and improving container load rate can greatly reduce EEOI and further reduce total fuel consumption. Although the large container ship itself can reach the IMO requirements of EEDI at the first stage with a reduction factor 10% under the reference line value, the proposed waste heat recovery systems can improve the ship EEDI reduction factor to 20% under the reference line value.
Źródło:
Archives of Thermodynamics; 2017, 38, 3; 63-75
1231-0956
2083-6023
Pojawia się w:
Archives of Thermodynamics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analiza porównawcza szkieletów do budowy aplikacji internetowych w ekosystemie Node.js
The comparative analysis of web applications frameworks in the Node.js ecosystem
Autorzy:
Miłosierny, Bartosz
Dzieńkowski, Mariusz
Powiązania:
https://bibliotekanauki.pl/articles/1837816.pdf
Data publikacji:
2021
Wydawca:
Politechnika Lubelska. Instytut Informatyki
Tematy:
JavaScript frameworks
Node.js environment
performance comparative analysis
server application
szkielety programistyczne JavaScript
środowisko Node.js
analiza porównawcza wydajności
aplikacja serwerowa
Opis:
Przedmiotem badań była analiza porównawcza trzech szkieletów do budowy aplikacji internetowych działających w ekosystemie Node.js: Express (wersja 4.17.1), Hapi (wersja 20.0.1) oraz Koa (wersja 2.13.0). Przygotowano ekspe-ryment składający się z szeregu scenariuszy, podczas których dokonano pomiarów czasów odpowiedzi serwera na żądania przychodzące ze strony klienta. W ramach pracy zaimplementowano serwerowe aplikacje testowe obsługujące żądania HTTP (GET, POST, PUT, DELETE) realizujące typowe operacje na bazie danych. Aplikacje zawierały te same funkcjonalności i zostały zbudowane przy pomocy trzech testowanych szkieletów. W poszczególnych scenariuszach wysyłano od niezależnych klientów po 1000 żądań danego typu, dokonywano pomiarów czasów kolejnych odpowiedzi oraz obliczano ich średnie. Na podstawie uzyskanych wyników okazało się, że szkielety Hapi i Koa dla żądań typu GET, POST, PUT, DELETE, operujące na jednym obiekcie lub ciągu znaków Hello World! osiągnęły najlepsze, choć bardzo zbliżone czasy odpowiedzi. W przypadku żądania GET, przy większych obciążeniach zdecydowanie najlepszym okazał się szkielet Koa, uzyskując czasy odpowiedzi w przybliżeniu o 20% lepsze niż Express. Przy dużych obciążeniach zdecydowanie najgorzej wypadł szkielet Hapi osiągający ponad 2 razy dłuższe czasy odpowiedzi niż szkielet Koa.
The subject of the research was the comparative analysis of three frameworks for building web applications, i.e. Ex-press (version 4.17.1), Hapi (version 20.0.1) and Koa (version 2.13.0), operating in the Node.js ecosystem. An experi-ment was prepared consisting of a number of scenarios, during which the server response times to incoming requests from the client were measured. As part of the work, server test applications handling HTTP requests (GET, POST, PUT, DELETE) performing typical data operations were implemented. The applications contained the same functionalities and were built using the three tested frameworks. In individual scenarios, 1,000 requests of a given type were sent from independent clients, the times of successive responses were measured and their averages were calculated. On the basis of the obtained results, Hapi and Koa frameworks for GET, POST, PUT, DELETE requests, operating on one object or a string Hello World! have achieved the best, although very similar, response times. In the case of the GET request, the Koa framework proved to be the best for higher loads, achieving response times approximately 20% better than the Express framework. For high loads, the Hapi framework achieved the worst results, reaching response times over 2 times longer than the Koa framework.
Źródło:
Journal of Computer Sciences Institute; 2021, 18; 42-48
2544-0764
Pojawia się w:
Journal of Computer Sciences Institute
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Electrooxidation of phenol on carbon fibre-based anodes through continuous electrolysis of synthetic wastewater
Autorzy:
Piotrowska, G.
Pierozynski, B.
Powiązania:
https://bibliotekanauki.pl/articles/779664.pdf
Data publikacji:
2018
Wydawca:
Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
Tematy:
phenol electrooxidation reaction
carbon fibre
wastewater electrolysis
High-Performance Liquid Chromatography/Mass Spectrometry analysis
Opis:
This work reports on the process of phenol electrooxidation, which is carried-out through continuous electrolysis of synthetic, sodium sulphate-based wastewater. Phenol electrodegradation is examined by means of a laboratory size (ca. 700 cm3  of working volume), poly (methyl methacrylate)-made electrolyser unit for various, carbon fibre and graphite-based anode configurations, and stainless steel cathodes, two different current-densities and concentrations of phenol in synthetically prepared wastewater solution. Proper monitoring of phenol degradation (including quantitative identification of reaction products and calculation of specific energy consumption) in wastewater is performed by means of instrumental, combined HPLC and MS technique in function of electrolysis time.
Źródło:
Polish Journal of Chemical Technology; 2018, 20, 1; 96-102
1509-8117
1899-4741
Pojawia się w:
Polish Journal of Chemical Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Development of a Teacher Grit Scale (TGS): Predicting the Performance of Educators in the Philippines
Autorzy:
Baraquia, Lee G.
Powiązania:
https://bibliotekanauki.pl/articles/1963536.pdf
Data publikacji:
2020-06-30
Wydawca:
Wydawnictwo Adam Marszałek
Tematy:
factor analysis
performance
teachers’ grit
Opis:
The study aims to develop and validate a Teacher Grit Scale and determine its predictive validity for performance. This quantitative research utilized exploratory, confirmatory, and regression analyses based on data from 1425 teachers of the Department of Education, Philippines. Exploratory factor analysis established the factorial validity of a 2-factor structure as compared to 3-factor and 4-factor models. Confirmatory factor analyses from Region IX and Region X of the Department of Education reveal strong cross-validation between the 2-factor models and the data using goodness-of-fit indices. These outcomes show that the factors describing grit are: (1) Perseverance in Teaching and (2) Passion and Purpose in Teaching. Grit relates significantly to teacher performance. However, only the first dimension of grit - perseverance in teaching, established predictive validity with performance.
Źródło:
The New Educational Review; 2020, 60; 165-177
1732-6729
Pojawia się w:
The New Educational Review
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
ConversationPiece II: Displaced and Rehacked
Autorzy:
Wennekers, Thomas
Emmett, Mathew
Denham, Susan L.
Powiązania:
https://bibliotekanauki.pl/articles/632527.pdf
Data publikacji:
2017
Wydawca:
Projekt Avant
Tematy:
: conversation
dialogue
performance
sonification
sound analysis
Opis:
Conversations are amazing! Although we usually find the experience enjoyable and even relaxing, when one considers the difficulties of simultaneously generating signals that convey an intended message while at the same time trying to understand the messages of another, then the pleasures of conversation may seem rather surprising. We manage to communicate with each other without knowing quite what will happen next. We quickly manufacture precisely timed sounds and gestures on the fly, which we exchange with each other without clashing-even managing to slip in some imitations as we go along! Yet usually meaning is all we really notice. In the ConversationPiece project, we aim to transform conversations into musical sounds using neuro-inspired technology to expose the amazing world of sounds people create when talking with others. Sounds from a microphone are separated into different frequency bands by a computer-simulated “ear” (more precisely “basilar membrane”) and analyzed for tone onsets using a lateral-inhibition network, similar to some cortical neural networks. The detected events are used to generate musical notes played on a synthesizer either instantaneously or delayed. The first option allows for exchanging timed sound events between two speakers with a speech-like structure, but without conveying (much) meaning. Delayed feedback further allows self-exploration of one’s own speech. We discuss the current setup (ConversationPiece version II), insights from first experiments, and options for future applications.
Źródło:
Avant; 2017, 8
2082-6710
Pojawia się w:
Avant
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Performance prediction of centrifugal pumps with CFD-tools
Autorzy:
Dick, E.
Vierendeels, J.
Serbruyns, S.
Vande Voorde, J.
Powiązania:
https://bibliotekanauki.pl/articles/1967637.pdf
Data publikacji:
2001
Wydawca:
Politechnika Gdańska
Tematy:
centrifugal pumps
CFD analysis
performance prediction
Opis:
The CFD code FLUENT, version 5.4, has been used for the flow analysis of two test pumps of end-suction volute type: one of low specific speed and one of medium specific speed. For both, head as a function of flow rate for constant rotational speed is known from experiments. FLUENT provides three calculation methods for analysis of turbomachinery flows: the multiple reference frame method (MRF), the mixing plane method (MP) and the sliding mesh method (SM). In all three methods, the flow in the rotor is calculated in a rotating reference frame, while the flow in the stator is calculated in an absolute reference frame. In the MRF and MP methods steady flow equations are solved, while in the SM method, unsteady flow equations are solved. The SM method does not introduce physical approximations. The steady methods approximate the unsteady interaction between rotor and stator. The cost of the unsteady method is, however, typically 30 to 50 times higher than the cost of the steady methods. It is found that the MRF and MP methods lead to completely erroneous flow field predictions for flows far away from the best efficiency point. This makes the steady methods useless for general performance prediction.
Źródło:
TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk; 2001, 5, 4; 579-594
1428-6394
Pojawia się w:
TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis of modern methods for increasing and managing the financial prosperity of businesses in the context of performance: a case study of the tourism sector in Slovakia
Autorzy:
Onuferová, Erika
Čabinová, Veronika
Dzurov Vargová, Tünde
Powiązania:
https://bibliotekanauki.pl/articles/19233492.pdf
Data publikacji:
2020
Wydawca:
Instytut Badań Gospodarczych
Tematy:
business performance
modern methods
performance benchmarking
travel agencies
Principal Component Analysis
Opis:
Research background: In the context of constantly changing business environment, the financial sector is focusing on new trends in financial management systems. Nowadays, there is a need to achieve long-term financial growth, so financial managers try to develop new models for managing and improving the financial performance of businesses in economic practice. Purpose of the article: This article aims to determine the financial performance of travel agencies by applying modern business performance evaluation methods in order to create a performance portfolio (ranking) for the years 2013-2017, subsequently to reveal the concordance rate of order of the selected business entities by comparing applied financial methods in the context of performance benchmarking. The research question is as follows: Does the multidimensional PCA method in the form of the performance portfolio of travel agencies provide similar financial results compared to the EVA indicator? Methods: For measuring the financial performance of businesses, the method of Principal Component Analysis (PCA) and the indicator Economic Value Added (EVA) were chosen. Spearman's rank-order correlation was applied in order to reveal the concordance rate of the analyzed travel agencies. Findings & Value added: The results indicate that by applying the PCA method, 6 key performance factors can be identified. Moreover, the findings revealed that the assessment of travel agencies using the PCA method and EVA indicator did not lead to the same financial results. Individual financial methods identified a different number of strong-performing and inefficient business entities. In this backdrop, we concluded that the business performance measurement based on the PCA method is not a suitable alternative to measuring performance using the EVA indicator.
Źródło:
Oeconomia Copernicana; 2020, 11, 1; 95-116
2083-1277
Pojawia się w:
Oeconomia Copernicana
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Future Performance Study of Al-Muamirah Wastewater Treatment Plant Applying a Statistical Analysis
Autorzy:
Nasir, Mohsin J.
Noori, Nazik A.
Kariem, Nagam O.
Powiązania:
https://bibliotekanauki.pl/articles/2027893.pdf
Data publikacji:
2021
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
future performance
statistical analysis
wastewater treatment plant
Opis:
Wastewater management is considered to be a great challenge, particularly in towns and cities with rapidly growing population. The study aimed to assess the Al-Muamirah WW treatment plant (WWTP), located in the Babylon governorate of Iraq, in terms of its hydraulic loading as a quality performance indicator. The findings showed that there will be a significant deficit in the capacity of the plant of 20%, 32% and 37% in the year of 2024, and will cumulatively arise in 2030 to become 26%, 41.5% and 47.7% for suggested growth rates of 1.27%, 2.5% and 3.95%, respectively. The outcomes of expected amounts of daily discarded wastewater in terms of estimated population were analyzed using the ANOVA test and it was found that the population growth ratio has a significant impact on the generated inflow, as f (2,30) = 3.713, and p= 0.019 < 0.05.
Źródło:
Journal of Ecological Engineering; 2021, 22, 10; 264-268
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wydajność języka Swift w zastosowaniach statystycznych
Swift performance statistical aplications
Autorzy:
Tylec, Sylwester
Woś, Karol
Powiązania:
https://bibliotekanauki.pl/articles/24083427.pdf
Data publikacji:
2022
Wydawca:
Politechnika Lubelska. Instytut Informatyki
Tematy:
Swift
statystyka
wydajność
analiza
statistics
performance
analysis
Opis:
Niniejsza praca ma na celu przeprowadzenie testów wydajności języka Swift w porównaniu z językiem C++ przy wykonywaniu obliczeń statystycznych. Analizowanymi zagadnieniami poza wydajnością są przejrzystość i składnia kodu, biblioteki dostępne dla tych języków oraz wykorzystanie zasobów sprzętowych urządzenia podczas przeprowadzania testów. W tym celu przeprowadzono analizę porównawczą dwóch wyżej wymienionych języków, opierającą się na wynikach uzyskanych z serii eksperymentów przeprowadzonych przy użyciu specjalnie utworzonych aplikacji testowych. Testy polegały na liczeniu odchylenia standardowego, mediany i średnich arytmetycznej, harmonicznej i geometrycznej a w trakcie testów rejestrowano czasy wykonania, użycie pamięci operacyjnej i obciążenie procesora. Na podstawie wyników badań ustalono, że język Swift nie jest zoptymalizowany pod kątem obliczeń statystycznych
This paper aims to test Swift's performance against C++ in performing statistical calculations. The analyzed issues, apart from performance, are code transparency and syntax, libraries available for these languages and the use of device hardware resources during testing. For this purpose, a comparative analysis of the two above-mentioned languages was carried out, based on the results obtained from a series of experiments carried out with the use of specially developed test applications. The tests consisted in calculating the standard deviation, median and arithmetic, harmonic and geometric mean, and during the tests, execution times, operating memory usage and CPU load were recorded. Based on the results of the research, it was found that the Swift language is not optimized for statistical calculations.
Źródło:
Journal of Computer Sciences Institute; 2022, 25; 409--416
2544-0764
Pojawia się w:
Journal of Computer Sciences Institute
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis of Match Performance of Full-backs from Selected European Soccer Leagues
Autorzy:
Konefał, Marek
Chmura, Paweł
Andrzejewski, Marcin
Pukszta, Dawid
Chmura, Jan
Powiązania:
https://bibliotekanauki.pl/articles/1054743.pdf
Data publikacji:
2015
Wydawca:
Uniwersytet Szczeciński. Wydawnictwo Naukowe Uniwersytetu Szczecińskiego
Tematy:
kinematic analysis
match performance
motor activity
soccer
Opis:
The aim of the present study was the analysis of match activities of full-backs from selected European national soccer leagues. The study sample comprised 30 full-backs playing in the autumn round of the 2014/15 season from five European national top-tier leagues: English Premier League, Spanish Primera Division, German Bundesliga, Russian Priemjer Liga and Italian Serie A. The performance of full-backs (left-back and right-back) from each selected team was analyzed using a professional match analysis system OptaPro which tracks every possible type of ball touch and on the ball action in match covered by a rigid set of definitions. The data for analysis included the total number of passes, total number of crosses, and total number of ball touches performed by the fullbacks in three zones of the pitch: attack, midfield and defense. The study results showed that the full-backs from the Spanish Primera Division executed the highest number of passes and crosses as well as ball touches in the attack zone. They also performed the lowest number of passes in the midfield and defense zones, in which the highest percentage of passes was achieved by the full-backs from the German league teams. The study indicates that in modern soccer defenders must possess a high level of offensive skills that can be necessary in the last stage of a team’s attack.
Źródło:
Central European Journal of Sport Sciences and Medicine; 2015, 11, 3; 45-53
2300-9705
2353-2807
Pojawia się w:
Central European Journal of Sport Sciences and Medicine
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Journalistic role performance – the Hungarian case
Autorzy:
Szabó, Gabriella
Kormos, Nikolett
Zagyi, Veronika
Powiązania:
https://bibliotekanauki.pl/articles/620319.pdf
Data publikacji:
2016
Wydawca:
Uniwersytet im. Adama Mickiewicza w Poznaniu
Tematy:
journalism
role performance
quantitative content analysis
Hungary
Opis:
The article introduces the results of an empirical examination of journalistic role performance in Hungary. In reference to the “Journalistic Role Performance Around the Globe” research project (led by Prof. Claudia Mellado from Pontificia Universidad Católica de Valparaíso, in Chile and Lea Hellmueller, from Texas States University, www.journalisticperformance.org), we attempt to discuss the main patterns of role performance in contemporary journalism in Hungary. The presence of six models in news production (watchdog, disseminator interventionist, civic, loyalfacilitator, service journalism, and infotainment) is investigated by conducting a quantitative content analysis of 1,087 news items published by the national desk of four Hungarian broadsheets in 2012–2013.
Źródło:
Środkowoeuropejskie Studia Polityczne; 2016, 2; 53-72
1731-7517
Pojawia się w:
Środkowoeuropejskie Studia Polityczne
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Narratives in Illness: A Methodological Note
Autorzy:
Hydén, Lars-Christer
Powiązania:
https://bibliotekanauki.pl/articles/2138572.pdf
Data publikacji:
2008-12-30
Wydawca:
Uniwersytet Łódzki. Wydawnictwo Uniwersytetu Łódzkiego
Tematy:
Narrative
Methodology
Identity
Performance
Ethnography
Video analysis
Opis:
As a result of the general growth in the interest in narratives different conception of what a story is and how to analyze has emerged. One especially interesting and methodological relevant difference is between the conception of narratives as textual objects and narratives as part of a storytelling event. The paper discusses the theoretical differences between these two analytical approaches to narratives. An example from my own research on Alzheimer’s patients telling stories illustrate the possibilities of using a performative and micro ethnographic approach to the study of storytelling in order to understand the functions of narratives – especially in relation to identity work. If stories not only are thought of as representations of events it becomes possible to view stories and story telling as social action: social states are both established, negotiated and changed through stories. This is especially important in the field of health and illness where diseases almost always are embedded in conversations and the telling of why and how symptoms were discovered or traumas received. For many patients and persons with especially communicative disabilities story telling is a challenge, but also an opportunity to actually master, maintain and often transform their identities.
Źródło:
Qualitative Sociology Review; 2008, 4, 3; 49-58
1733-8077
Pojawia się w:
Qualitative Sociology Review
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Logistics Systems Maintenance Modelling Problems - the Use of TDA Approach
Autorzy:
Werbińska-Wojciechowska, Sylwia
Powiązania:
https://bibliotekanauki.pl/articles/503872.pdf
Data publikacji:
2012
Wydawca:
Międzynarodowa Wyższa Szkoła Logistyki i Transportu
Tematy:
time-delay analysis
logistics system performance inspection model
Opis:
The article presents an overview of some recent developments in the area of mathematical modelling of maintenance decisions with the use of time-delay and time-delay analysis. Thus, the literature overview in the investigated area is provided. The problem of time relations occurred in supply chain performance process is investigated. Later, there are presented obtained reliability analysis results in comparison with the knowledge about the case company present con-dition. The article investigates the possibilities of basic time delay model implementation in the area of logistic sys-tem of sixteen forklifts performance analysis.
Źródło:
Logistics and Transport; 2012, 15, 2; 63-74
1734-2015
Pojawia się w:
Logistics and Transport
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Zastosowanie analizy sieci do oceny struktury organizacji i wyznaczania kierunków jej zmian
Application of network analysis in evaluating organizational structure and determining its future shape
Autorzy:
Zbieg, Anita
Powiązania:
https://bibliotekanauki.pl/articles/419778.pdf
Data publikacji:
2015
Wydawca:
Wydawnictwo Uniwersytetu Ekonomicznego we Wrocławiu
Tematy:
organizational structure
network analysis
organizational network
company performance
Opis:
The article presents the result of an empirical study that compares the formal structure of a company with its less formal counterpart: the network of cooperation, flow of information, knowledge and decision between employees. An empirical study surveys 374 employees from two companies about their position in formal structure and their connections with other employees. The conducted analysis examines the relationship between company structural characteristics and performance, as one of studied company performs less effective than other. The paper examines such issues as: the level of convergence of both structures, the degree of compliance of formal and informal authority and the allocation of network resources. In a company characterized by higher performance we observed higher level of convergence of both structures, higher degree of compliance of the position of the employee with the level of their informal authority, and higher level of support provided by the managers. Results suggest that the comparison of formal and informal structure of the company provides information about its performance that is difficult to obtain in any other way. Finally, presented managerial implications refer to the specific ways how to improve the organizational structure on the basis of information obtained by analyzing the organizational network.
Źródło:
Nauki o Zarządzaniu; 2015, 1 (22); 71-90
2080-6000
Pojawia się w:
Nauki o Zarządzaniu
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Koncepcja ruchu w dyskursie o tańcu współczesnym
The Concept of Movement in the Discourse about Contemporary Dance
Autorzy:
Pędzisz, Joanna
Powiązania:
https://bibliotekanauki.pl/articles/1070572.pdf
Data publikacji:
2020-12-01
Wydawca:
Uniwersytet Warmińsko-Mazurski w Olsztynie
Tematy:
movemen
contemporary dance
performance
discourse analysis
text linguistics
Opis:
The aim of the considerations presented in this paper is to determine the specificity of movement in contemporary dance. This specificity is considered at three levels: as the relationship of body parts to each other, as the relation of the body and part of it to the stage space, and as the relation of the body and parts of it to the qualitative parameters of movement such as speed, tension and size. The research data consist of the descriptions of dance performances, which are published in printed or electronic form during the organization of conferences, meetings and dance theatre festivals.
Źródło:
Acta Neophilologica; 2020, XXII/2; 83-96
1509-1619
Pojawia się w:
Acta Neophilologica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Relationship between Environmental Uncertainty and Enterprise Performance. A Fuzzy-Set Analysis
Autorzy:
Kwiotkowska, A.
Gębczyńska, M.
Powiązania:
https://bibliotekanauki.pl/articles/2064981.pdf
Data publikacji:
2018
Wydawca:
STE GROUP
Tematy:
environmental uncertainty
firm performance
fuzzy-set analysis
SME
Opis:
The purpose of this paper is to explore causal complexity in the relationship between environmental uncertainty and firm’s performance. Due to complexity in the external and internal environment, the relationship between environment and firm performance rests not only on a single attribute but on the interrelation and complementarities between multiple characteristics such as firm features and external factors. This study examines the influence of a firm’s specific characteristics and the dimensions of environmental uncertainty on the company’s performance. Fuzzy-set qualitative comparative analysis is used to analyze data collected via questionnaires from 58 Polish small and medium enterprises (SMEs). The results suggest that characteristics of the general business environment, as well as the firm-specific characteristics all matter to firm performance. In addition, our findings clearly demonstrate that the determination of high firm performance is underpinned by substantial interdependence among the selected conditions and complexity. Therefore, any particular condition may have a different or even opposite effect on the outcome depending on the presence or absence of other conditions. Based on this, we conclude that external environmental uncertainty characteristics, with the dimensions of competitive intensity, technological turbulence and market/demand turbulence, are not as important as the other conditions for high-performing firms. The study offers a new perspective on the relationship between environmental uncertainty and firm performance with its systematic comparative analysis of complex cases. It identifies different combinations of conditions (paths) leading to a high firm performance.
Źródło:
Multidisciplinary Aspects of Production Engineering; 2018, 1, 1; 809--816
2545-2827
Pojawia się w:
Multidisciplinary Aspects of Production Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Numerical analysis for an optimization of a powered roof support operating in hazard conditions of minig tremors
Autorzy:
Szurgacz, D.
Powiązania:
https://bibliotekanauki.pl/articles/89179.pdf
Data publikacji:
2015
Wydawca:
Politechnika Wrocławska. Wydział Geoinżynierii, Górnictwa i Geologii. Instytut Górnictwa
Tematy:
hydraulic leg
performance
hydraulic system
numerical analysis
modelling
Opis:
The article presents an optimization of Ø0.21/0.16 hydraulic leg system operating in a powered roof support Glinik 13/25 Pp type, working at longwall 6, seam 501, KWK Bobrek – Centrum - in hazard conditions of mining tremors. The process included numerical modelling and computer software, ANSYS CFX. The optimization allows to achieve an adequate capacity and performance of the hydraulic system which increases workplace safety in the mines. The article provides basic requirements that must be provided in order to conduct an analysis in ANSYS CFX. The software was used to carry out 10 simulations, which allowed to determine an optimal flow for the subject leg.
Źródło:
Mining Science; 2015, 22, Special Issue 2; 171-179
2300-9586
2353-5423
Pojawia się w:
Mining Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
CONSTRUCTION OF THE ENVIRONMENTAL PERFORMANCE INDEX USING DEA
Autorzy:
Chodakowska, Ewa
Powiązania:
https://bibliotekanauki.pl/articles/453174.pdf
Data publikacji:
2014
Wydawca:
Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Katedra Ekonometrii i Statystyki
Tematy:
EPI (environmental performance index)
DEA (data envelopment analysis)
Opis:
There is wide range of environmental performance indicators. The more sophisticated they are, the more arbitrary viewpoint they take. The EPI weights are established based on experts’ judgments form Yale University and Columbia University team. In the article was analysed the changes in the EPI when the weights had been replaced with the weights determined by Data Envelopment Analysis. DEA determines weights that maximize the performance of each unit with some assumptions. Not for every European country this approach turned out to be the better option.
Źródło:
Metody Ilościowe w Badaniach Ekonomicznych; 2014, 15, 2; 296-306
2082-792X
Pojawia się w:
Metody Ilościowe w Badaniach Ekonomicznych
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Optimisation of the performance of a pyrolysis reactor for G50 chips
Autorzy:
Dhaundiyal, Alok
Singh, Suraj
Powiązania:
https://bibliotekanauki.pl/articles/240925.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
biomass
thermal analysis
pyrolysis
gas yield
performance index
Opis:
The aim of any industrial plant, which is dealing in the energy sector, is to maximise the revenue generation at the lowest production cost. It can be carried out either by optimizing the manpower or by improving the performance index of the overall unit. This paper focuses on the optimisation of a biomass power plant which is powered by G50 hardwood chips (Austrian standard for biomass chips). The experiments are conducted at different operating conditions. The overall effect of the enhanced abilities of a reactor on the power generation is examined. The output enthalpy of a generated gas, the gas yield of a reactor and the driving mechanism of the pyrolysis are examined in this analysis. The thermal efficiency of the plant is found to vary from 44 to 47% at 400°C, whereas it is 44 to 48% for running the same unit at 600°C. The transient thermal condition is solved with the help of the lumped capacitance method. The thermal efficiency of the same design, within the constraint limit, is enhanced by 5.5%, whereas the enthalpy of the produced gas is magnified by 49.49% through nonlinear optimisation. The temperature of biomass should be homogenous, and the ramping rate must be very high. The 16% rise in temperature of the reactor is required to reduce the mass yield by 20.17%. The gas yield of the reactor is increased by up to 85%. The thermal assessment indicates that the bed is thermally thin, thus the exterior heat transfer rate is a deciding factor of the pyrolysis in the reactor.
Źródło:
Archives of Thermodynamics; 2020, 41, 1; 245-263
1231-0956
2083-6023
Pojawia się w:
Archives of Thermodynamics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effectiveness and performance of tax system in Slovak Republic in terms of its key non-macroeconomics factors
Autorzy:
Dobrovič, Ján
Rajnoha, Rastislav
Korauš, Antonín
Powiązania:
https://bibliotekanauki.pl/articles/19077837.pdf
Data publikacji:
2018
Wydawca:
Instytut Badań Gospodarczych
Tematy:
tax reform
tax administration
effectiveness
performance
factor analysis
Opis:
Research background: The paper addresses the issue of an optimal tax system and puts emphasis on two aspects: justice and efficiency. The issue of taxation has been the subject of numerous debates at the European level for several years. A good tax system should contribute to the state treasury with sufficient revenues, should not be an administrative burden, and must be sufficiently efficient and transparent. Purpose of the article: The submitted article provides an extensive analysis of the opinions of respondents on the effectiveness of the financial administration of the Slovak Republic. The aim is to analyse the views and attitudes of the respondents on the key factors affecting the effectiveness of financial administration in terms of respondents' age, gender, occupation and place of residence using mathematical-statistical methods. Methods: In the course of extensive empirical quantitative research (N = 1.500) were used Factor Model Analysis (Factor Analysis) and Analysis of Variance (Anova) were used. The data was obtained through a questionnaire survey, which-was carried out in four districts of Slovakia and focused on a wide range of respondents divided into four age-related categories. Findings & Value added: In terms of research carried out, it is possible to conclude that there is dissatisfaction with the overall tax and customs system in the Slovak Republic. An analysis of respondents' views on the effectiveness of the tax system has shown that it is possible to identify several key factors that affect it, and they are: collection of levies and availability, competence of tax administration staff, computerisation of tax administration, tax collection efficiency, labour costs, and administrative difficulty of tax administration. in the paper, we also discuss these in more detail. The research results offer relevant and interesting implications for public authorities, policy makers and reformers as well as motives for further investigation of the tax administration issue.
Źródło:
Oeconomia Copernicana; 2018, 9, 4; 617-634
2083-1277
Pojawia się w:
Oeconomia Copernicana
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Evolution of Reception Efficacy and Execution in Women’s Volleyball According to Level of Competition – A Descriptive Study Aged From 14-Year-Old To Adult Professional Players
Autorzy:
Echeverría, Carlos J.
Ortega, Enrique
Palao, José M.
Powiązania:
https://bibliotekanauki.pl/articles/1030761.pdf
Data publikacji:
2019
Wydawca:
Uniwersytet Szczeciński. Wydawnictwo Naukowe Uniwersytetu Szczecińskiego
Tematy:
developmental stage
match analysis
sport performance
team sport
Opis:
The aim of this study was to determine the technical performance profile of service reception with regard to execution and efficacy level according to level of competition in women’s volleyball. The sample of the study was composed of a total of 6,311 game phases from 187 sets in 48 matches played during season 2005–2006 by the following divisions: under-14, under-16, under-18, 2nd national senior division, 1st national senior division, and international senior division. The design of the study was a descriptive and inter- and intra-group correlational one. The variables studied included level of competition, technique used to serve, technique used to receive, zone where the reception was executed, and efficacy of reception. The results indicated that at higher levels of competition: a) there is higher efficacy in reception; b) number of errors decreases; and c) proportion of receptions that allow one or more attacking options for the receiving team increases. As level of competition increases, the effect of service on reception decreases, and receiving zones are more diverse. This study establishes the technical and tactical service-reception profiles in women’s volleyball, compares them, and establishes the dependence between variables to understand how the action changes throughout the levels of competition.
Źródło:
Central European Journal of Sport Sciences and Medicine; 2019, 27, 3; 55-64
2300-9705
2353-2807
Pojawia się w:
Central European Journal of Sport Sciences and Medicine
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Silent Calls – Causes and Measurements
Autorzy:
Baran, K.
Cegłowski, P.
Kula, S.
Powiązania:
https://bibliotekanauki.pl/articles/308612.pdf
Data publikacji:
2015
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Tematy:
key performance indicators
silent calls
speech signal analysis
Opis:
The quality of telephone services is very important from either operator or subscriber point of view. One of the negative phenomenon which affects quality of telephone services is lack of speech signal during a call. This situation occurs relatively frequently in mobile telephony, and is called silent call (SC). Lack of speech signal can occur only once or many times during the call, and degrade connection quality. In this paper, an analysis of this phenomenon is presented. The research base are the results of measurements mobile network one of operators in Trójmiasto a large urban area consisting of three cities: Gdańsk, Gdynia, and Sopot. To estimate impact of silent calls on speech quality, mean opinion score index was calculated using POLQA algorithm.
Źródło:
Journal of Telecommunications and Information Technology; 2015, 1; 20-22
1509-4553
1899-8852
Pojawia się w:
Journal of Telecommunications and Information Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Static Performance Analysis of the Foil Bearing Structure
Autorzy:
Żywica, G.
Powiązania:
https://bibliotekanauki.pl/articles/386386.pdf
Data publikacji:
2011
Wydawca:
Politechnika Białostocka. Oficyna Wydawnicza Politechniki Białostockiej
Tematy:
łożysko foliowe
wydajność
analiza
foil bearing
performance
analysis
Opis:
Foil bearings are a variety of slide bearings, in which an extra compliant foil set is applied between journal and bush, in order to improve the selected static and dynamic properties. Bearings of this type are investigated by engineers and researchers from all over the world since many years - both from simulation as well as experimental point of view. Due to the complexity of construction, the reliable simulation models are still being searched for. This paper discusses the most important stages of elaboration of the structural supporting layer of the foil bearing as well as results of verification tests. The main goal of the conducted study was assessment of reliability of the elaborated numerical model, in order to ensure that in future it could play a role of a reliable research tool, which could be used for elaboration of the numerical model of the entire foil bearing.
Źródło:
Acta Mechanica et Automatica; 2011, 5, 4; 119-122
1898-4088
2300-5319
Pojawia się w:
Acta Mechanica et Automatica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
An Accent-Based Approach to Automatic Rendering of Piano Performance: Preliminary Auditory Evaluation
Autorzy:
Bisesi, E.
Parncutt, R.
Powiązania:
https://bibliotekanauki.pl/articles/177339.pdf
Data publikacji:
2011
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
piano performance
expression
accents
musical analysis
Director Musices
Opis:
We are exploring the relationship between accents and expression in piano performance. Accents are local events that attract a listener’s attention and are either evident from the score (immanent) or added by the performer (performed). Immanent accents are associated with grouping (phrasing), metre, melody and harmony. In piano music, performed accents involve changes in timing, dynamics, articulation, and pedalling; they vary in amplitude, form, and duration. We analyzed the first eight bars of Chopin Prelude op. 28 n. 6. In a separate study, music theorists had marked grouping, melodic and harmonic accents on the score and estimated the importance (salience) of each. Here, we mathematically modeled timing and dynamics in the prelude in two ways using Director Musices (DM) – a software package for automatic rendering of expressive performance. The first rendering focused on phrasing following existing and tested procedures in DM. The second focused on accents – timing and dynamics in the vicinity of the accents identified by the theorists. In an informal listening test, 10 out of 12 participants (5 of 6 musicians and 5 of 6 non-musicians) preferred the accent-based formulation, and several stated that it had more variation of timing and dynamics from one phrase to the next.
Źródło:
Archives of Acoustics; 2011, 36, 2; 283-296
0137-5075
Pojawia się w:
Archives of Acoustics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The determinants of Polish movies’ box office performance in Poland
Autorzy:
Gmerek, Natalia
Powiązania:
https://bibliotekanauki.pl/articles/540606.pdf
Data publikacji:
2015
Wydawca:
Uniwersytet Warszawski. Wydawnictwo Naukowe Wydziału Zarządzania
Tematy:
motion picture success
box office performance
multiple regression analysis
Opis:
This paper provides an empirical analysis of financial performance of movies produced in Poland between 2000 and 2011. To understand the reason for a motion picture’s success in the theatrical channel various factors concerning total domestic box office performance were regressed from the box office results of 207 movies. This study proposes that the success of a movie can be determined by three elements: product attributes, distribution-related variables and information sources. The results show that the production budget, movie type – sequel or adaptation, star power, genre, scope of the movie’s release and audience rating are closely related to box office, influencing it in a positive way. On the other hand, critics’ rating, release date (April, July, August) and strong competitive pressure from other movies have a substantial negative influence on box office. The results suggest that the overall movie quality (product-related variables) has an economically and statistically significant effect on total demand for Polish movies.
Źródło:
Journal of Marketing and Consumer Behaviour in Emerging Markets; 2015, 1(1); 15-35
2449-6634
Pojawia się w:
Journal of Marketing and Consumer Behaviour in Emerging Markets
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Indebtedness, Fiscal Discipline and Development Spending – A Non-parametric Approach
Autorzy:
Sinha, Ram Pratap
Powiązania:
https://bibliotekanauki.pl/articles/2075409.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Indian states
fiscal performance
efficiency
data envelopment analysis
bootstrap
Opis:
Indian states exhibit considerable heterogeneity in terms of revenue mobilizing capacities and efforts, development spending and fiscal dependence on the central government. In this context, the paper compares the fiscal performance of major Indian states in terms of two non-parametric performance evaluation models for the period 2009–10 to 2014–15. The study thus uses the conventional two stage framework for efficiency evaluation as well as the two stage conditional performance model. The outcomes enable us to identify front-runners as well as laggards in the area of fiscal management. Further, the study showed that the gross capital formation experienced by the states significantly influences state performance in India. However, the impact of outstanding liabilities on efficiency performance was statistically insignificant
Źródło:
Central European Journal of Economic Modelling and Econometrics; 2021, 2; 147-173
2080-0886
2080-119X
Pojawia się w:
Central European Journal of Economic Modelling and Econometrics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Numerical Analysis of the Unsteady Propeller Performance in the Ship Wake Modified By Different Wake Improvement Devices
Autorzy:
Bugalski, T.
Szantyr, J.
Powiązania:
https://bibliotekanauki.pl/articles/258852.pdf
Data publikacji:
2014
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:
ship wake improvement devices
unsteady propeller performance
numerical analysis
Opis:
The paper presents the summary of results of the numerical analysis of the unsteady propeller performance in the non-uniform ship wake modified by the different wake improvement devices. This analysis is performed using the lifting surface program DUNCAN for unsteady propeller analysis. The object of the analysis is a 7000 ton chemical tanker, for which four different types of the wake improvement devices have been designed: two vortex generators, a pre-swirl stator, and a boundary layer alignment device. These produced five different cases of the ship wake structure: the original hull and hull equipped alternatively with four wake improvement devices. Two different propellers were analyzed in these five wake fields, one being the original reference propeller P0 and the other - a specially designed, optimized propeller P3. The analyzed parameters were the pictures of unsteady cavitation on propeller blades, harmonics of pressure pulses generated by the cavitating propellers in the selected points and the fluctuating bearing forces on the propeller shaft. Some of the calculated cavitation phenomena were confronted with the experimental. The objective of the calculations was to demonstrate the differences in the calculated unsteady propeller performance resulting from the application of different wake improvement devices. The analysis and discussion of the results, together with the appropriate conclusions, are included in the paper.
Źródło:
Polish Maritime Research; 2014, 3; 32-39
1233-2585
Pojawia się w:
Polish Maritime Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Does lean practices implementation impact on company performance? A meta-analytical research
Autorzy:
Gonçalves, Telma I. G.
Sousa, Paulo S. A.
Moreira, Maria R. A.
Powiązania:
https://bibliotekanauki.pl/articles/407127.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
lean manufacturing
performance evaluation
meta-analysis
manufacturing system
company
Opis:
Studies linking the use of lean practices to company performance have been increasing as markets are becoming more competitive and companies are eager for reducing waste and therefore implementing the Lean Management (LM) philosophy to improve performance. However, results from these studies have found various and different impacts and some light is needed. Extant literature was reviewed and, to achieve the research objective, a metaanalysis of correlations was carried out. The obtained results suggest a positive relationship between some lean practices and performance measures. Furthermore, the presence of moderators influencing the relationship between lean practices and performance outcomes is highlighted in our results. To our best knowledge, this is the first research that proposes a comparison of results from primary studies on Lean implementation, by analysing the linear relationship between lean practices and enterprise performance. It fills this gap and therefore represents an important contribution.
Źródło:
Management and Production Engineering Review; 2019, 10, 4; 11-24
2080-8208
2082-1344
Pojawia się w:
Management and Production Engineering Review
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Be Positive and Engage in Training: Positive Orientation and Marathon Performance
Autorzy:
Kędra, Michał
Łaguna, Mariola
Powiązania:
https://bibliotekanauki.pl/articles/31340957.pdf
Data publikacji:
2022
Wydawca:
Katolicki Uniwersytet Lubelski Jana Pawła II. Towarzystwo Naukowe KUL
Tematy:
positive orientation
running performance
training engagement
marathon
mediation analysis
Opis:
Psychological mechanisms explaining running performance have not been fully identified yet. One of the factors potentially important in running performance is positive orientation—a higher order construct capturing the core of self-esteem, life satisfaction, and optimism. The aim of the study was to investigate the role of positive orientation in explaining running performance of recreational runners. The study involved 204 recreational runners taking part in a marathon race. Before the race, they reported their positive orientation, training engagement, BMI, and previous marathon experience. Actual running performance was measured using runners’ personal bib numbers and their objective time scores obtained from the official competitors’ list after the race. Structural equation modelling results show that the higher is runners’ positive orientation, the higher is also their training engagement before the marathon, which in turn predicts their actual running performance. The study extends the understanding of a role of personality in recreational sport performance. The findings broaden also evidence concerning the role of positive orientation in effective functioning.
Źródło:
Roczniki Psychologiczne; 2022, 25, 3; 223-237
1507-7888
Pojawia się w:
Roczniki Psychologiczne
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Monitoring the performance of a ship’s main engine based on big data technology
Autorzy:
Liang, Meng
Chen, Mingzhi
Powiązania:
https://bibliotekanauki.pl/articles/32912852.pdf
Data publikacji:
2022
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:
big data of ship energy efficiency
main engine
performance evaluation
cluster analysis
mechanism analysis
Opis:
Under the recent background of ‘Green Shipping’ and rising fuel prices, it is very important to reduce the fuel consumption rate of ships, which is directly affected by the performance of the main engine. A reasonable maintenance schedule can optimise the performance of the main engine. However, a traditional maintenance schedule is based on the navigation distance and time, ignoring many other factors, such as a harsh working environments and frequently changing operating conditions, which will lead to faster performance degradation. In this study, a real-time evaluation method combing big data of ship energy efficiency with physics-based analysis is proposed to judge the degradation of main engine performance and assist in determining the maintenance schedule. Firstly, based on the developed ship energy efficiency big data platform, the distribution statistics and comparison of different operating states are carried out. Gaussian mixture model (GMM) and Density-Based Spatial Clustering of Applications with Noise (DBSCAN) are used to cluster the data and the high-density data areas are obtained as the analysis points. Then, the data of the analysis points are polynomial fitted, by the least square method, to obtain the propulsion characteristics curves, load characteristic curves, and speed characteristic curves, which can be used to observe the performance degradation of the main engine. The results show that this method can effectively monitor the degradation degree of the main engine performance, and is of great significance to fuel efficiency improvements and greenhouse gas (GHG) emissions reduction.
Źródło:
Polish Maritime Research; 2022, 3; 128-140
1233-2585
Pojawia się w:
Polish Maritime Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Object library of algorithms for dynamic optimization problems; Benchmarking SQP and nonlinear interior point methods
Autorzy:
Błaszczyk, J.
Karbowski, A.
Malinowski, K.
Powiązania:
https://bibliotekanauki.pl/articles/929795.pdf
Data publikacji:
2007
Wydawca:
Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:
optymalizacja dynamiczna
programowanie kwadratowe sekwencyjne
różniczkowanie automatyczne
obliczenia numeryczne
analiza danych
dynamic optimization
large-scale optimization
sequential quadratic programming
nonlinear interior-point methods
object-oriented numerical computations
automatic differentiation
performance data analysis
Opis:
The main purpose of this paper is to describe the design, implementation and possibilities of our object-oriented library of algorithms for dynamic optimization problems. We briefly present library classes for the formulation and manipulation of dynamic optimization problems, and give a general survey of solver classes for unconstrained and constrained optimization. We also demonstrate methods of derivative evaluation that we used, in particular automatic differentiation. Further, we briefly formulate and characterize the class of problems solved by our optimization classes. The solution of dynamic optimization problems with general constraints is performed by transformation into structured large-scale nonlinear programming problems and applying methods for nonlinear optimization. Two main algorithms of solvers for constrained dynamic optimization are presented in detail: the sequential quadratic programming (SQP) exploring the multistage structure of the dynamic optimization problem during the solution of a sequence of quadratic subproblems, and the nonlinear interior-point method implemented in a general-purpose large-scale optimizer IPOPT. At the end, we include a typical numerical example of the application of the constrained solvers to a large-scale discrete-time optimal control problem and we use the performance profiles methodology to compare the efficiency and robustness of different solvers or different options of the same solver. In conclusions, we summarize our experience gathered during the library development.
Źródło:
International Journal of Applied Mathematics and Computer Science; 2007, 17, 4; 515-537
1641-876X
2083-8492
Pojawia się w:
International Journal of Applied Mathematics and Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of environmental, ergonomic factors and properties of operators on the reliability of ships propulsion systems
Autorzy:
Frąckowiak, W.
Powiązania:
https://bibliotekanauki.pl/articles/247900.pdf
Data publikacji:
2012
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
propulsion system
operator
reliability
analysis
operator functions
Performance Shaping Factor
Opis:
Analyzing the systems in terms of reliability, we often treat them as the technical objects only, omitting human interaction or assuming that operator has constant characteristics. This significantly distorts the results obtained in this way, since human is a part of the system with special properties that can change together with the predisposition of the operator and the conditions under which he operates. These attributes may have a major influence on the reliability of the systems. Therefore, analysis of systems reliability should include a reliability of operator and its properties. In this paper presented the antropotechnical reliability structure based on selected installation, which is a part of ships propulsion system. Also operator’s functions were defined and the analysis of human reliability, taking into account various properties of the operator and the external conditions, were performed. Then, there is assessed the influence of operator and environmental factors on the value of the entire system reliability. The study used the reliability data of the container ship propulsion system equipped with low-speed piston engine, fixed pitch propeller and auxiliary installations. These data were obtained from studies of expert judgments (Brandowski A., Frąckowiak W. et al.) in the years 2007–2009. For HRA (human reliability analysis), HEART technique (Human Error Assessment and Reduction Technique) was used, together with the human unreliability values and correction factors developed by the authors of this method. Study results illustrate influence of environmental, ergonomic factors and the properties of the operator on the reliability of the antropotechnical systems. The studies were subjected exemplification on fuel treatment installation as a part of ships propulsion systems.
Źródło:
Journal of KONES; 2012, 19, 2; 145-151
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Performance analysis of multipurpose refrigeration system (MRS) on fishing vessel
Autorzy:
Ust, Y.
Karakurt, A.
Gunes, U.
Powiązania:
https://bibliotekanauki.pl/articles/258796.pdf
Data publikacji:
2016
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:
refrigeration cycles
exergy analysis
exergetic performance coefficient
COP
exergy efficiency
Opis:
The use of efficient refrigerator/freezers helps considerably to reduce the amount of the emitted greenhouse gas. A two-circuit refrigerator-freezer cycle (RF) reveals a higher energy saving potential than a conventional cycle with a single loop of serial evaporators, owing to pressure drop in each evaporator during refrigeration operation and low compression ratio. Therefore, several industrial applications and fish storage systems have been utilized by using multipurpose refrigeration cycle. That is why a theoretical performance analysis based on the exergetic performance coefficient, coefficient of performance (COP), exergy efficiency and exergy destruction ratio criteria, has been carried out for a multipurpose refrigeration system by using different refrigerants in serial and parallel operation conditions. The exergetic performance coefficient criterion is defined as the ratio of exergy output to the total exergy destruction rate (or loss rate of availability). According to the results of the study, the refrigerant R32 shows the best performance in terms of exergetic performance coefficient, COP, exergy efficiency, and exergy destruction ratio from among the other refrigerants (R1234yf, R1234ze, R404A, R407C, R410A, R143A and R502). The effects of the condenser, freezerevaporator and refrigerator-evaporator temperatures on the exergetic performance coefficient, COP, exergy efficiency and exergy destruction ratios have been fully analyzed for the refrigerant R32.
Źródło:
Polish Maritime Research; 2016, 2; 48-56
1233-2585
Pojawia się w:
Polish Maritime Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A comprehensive review on energy and exergy analysis of solar air heaters
Autorzy:
Ghritlahre, Harish Kumar
Sahu, Piyush Kumar
Powiązania:
https://bibliotekanauki.pl/articles/240351.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
solar energy
energy
exergy analysis
solar air heater
thermal performance
Opis:
For economic growth of nation, the energy plays an important role. The excessive use of fossil fuels results the increase in global warming and depleting the resources. Due to this reason, the renewable energy sources are creating more attraction for researchers. In renewable energy sector, solar energy is the most abundant and clean source of energy. In solar thermal systems, solar air heater (SAH) is the main system which is used for heating of air. As it is simple in construction and cheaper in cost, it is of main interest for the researchers. The concept of first law and second law of thermodynamics is used for the study of the energy and exergy analysis respectively. The energy analysis is of great importance for the study of process effectiveness while the exergetic analysis is another significant concept to examine the actual behavior of process involving various energy losses and internal irreversibility. For efficient utilization of solar energy, the exergy analysis is very important tool for optimal design of solar air heaters. The aim of the present work is to review the works related to energy and exergy analysis of various types of solar air heaters and to find out the research gap for future work.
Źródło:
Archives of Thermodynamics; 2020, 41, 3; 183-222
1231-0956
2083-6023
Pojawia się w:
Archives of Thermodynamics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A Framework to Diagnose the Business and Evaluate Upgrade Plans in SMEs
Autorzy:
Momani, Amer
Al-Hawar, Tarek
Tahat, Sufyan
Powiązania:
https://bibliotekanauki.pl/articles/2023964.pdf
Data publikacji:
2021-09
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
strategic planning
performance management
business upgrade
SWOT analysis
resource allocation
Opis:
Small and medium-sized enterprises (SMEs) are facing barriers to grow due to the lack of structured procedures for upgrading and allocating the limited resources. To overcome these drawbacks and to improve business capabilities, a structured framework to conduct a comprehensive diagnostic and upgrading study is presented in this paper. The proposed framework involves four phases. First, the external and internal strategic factors, which can affect the enterprises’ performance are evaluated using strategic planning and assessment tools. Second, key upgrade performance indicators are developed and evaluated using multi-attribute rating techniques to guide, evaluate, and track progress of upgrading process. Third, a set of upgrade strategies are generated and evaluated using resource allocation model. Finally, a periodic re-evaluation plan is introduced to monitor the implementation progress. The developed framework for performance evaluation and upgrading is suitable to be used as a structured know-how procedure in manufacturing enterprises and can support entrepreneurs in their strategic decisions. To validate the proposed framework, a data set was collected from a local housecore company. As a result, one package of the efficient frontier strategies that represents the best use of resources was proposed for implementation.
Źródło:
Management and Production Engineering Review; 2021, 13, 3; 25-39
2080-8208
2082-1344
Pojawia się w:
Management and Production Engineering Review
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Column flotation performance prediction: PCA, ANN and image analysis-based approaches
Autorzy:
Nakhaei, Fardis
Irannajad, Mehdi
Mohammadnejad, Sima
Powiązania:
https://bibliotekanauki.pl/articles/109518.pdf
Data publikacji:
2019
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
image analysis
column flotation
froth features
performance
prediction
PCA
ANN
Opis:
The flotation froth surface appearance includes remarkable information, which can be employed as a helpful index for the qualitative evaluation of the process efficiency. Image analysis is a practical technology for the sake of achieving process related information that can be employed in expert controllers in order to amend flotation performance. In this paper, the intelligent modelling of relationship between froth characteristics and the metallurgical performance in a pilot column flotation of iron ore was established. Column flotation tests were carried out at a wide range of operating conditions and the froth features along with the metallurgical performances were specified for each run. The artificial intelligence models suggested for the performance parameters prediction include (1) multi-layer back propagation neural network (BPNN), (2) hybrid BPNN with principal component analysis (PCA). The hybrid network was on the basis of the PCA employment in order to decrease the number of variables to be given as input for BPNN. The relationships between the froth features and metallurgical performance factors were successfully modelled via the use of the two methods. The simulation results revealed that the prediction precision of BPNN model on the basis of all the data was relatively higher than the estimation precision of BPNN based on PCA algorithm. The Hybrid BPNN model that was trained by the pre-processed database of measurements achieved from the PCA can be considered a robust method when training time is of paramount importance in objectives of proces control.
Źródło:
Physicochemical Problems of Mineral Processing; 2019, 55, 5; 1298-1310
1643-1049
2084-4735
Pojawia się w:
Physicochemical Problems of Mineral Processing
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Between-population variation in plant performance traits and elemental composition of Colchicum autumnale L. and its relation to edaphic environments
Autorzy:
Mroz, L
Powiązania:
https://bibliotekanauki.pl/articles/57397.pdf
Data publikacji:
2008
Wydawca:
Polskie Towarzystwo Botaniczne
Tematy:
population variation
plant performance
vegetative performance
reproductive performance
elemental composition
mineral composition
parent material
soil property
redundancy analysis
Colchicum autumnale
edaphic environment
Opis:
Variation in vegetative and reproductive performance and leaf mineral composition among 25 populations of Colchicum autumnale (meadow saffron) from soils derived from six parent materials (limestone, marl, sandstone, greenstone, melaphyre and serpentine) in southwestern Poland has been investigated. The plant size (PS), total le-af area (TLA), leaf shape (LS), number of fruits per plant (NFP), number of seeds per plant (NFP), total weight seed per plant (TWSP) were estimated, and concentrations of seventeen elements (N, P, K, Ca, Mg, Na, S, Fe, Mn, Cu, Zn, Pb, Cd, Ni, Co, Cr, Mo) were analyzed in leaf and soil samples. In soil samples, also soil pH, organic matter content and sand, silt and clay content were determined. All soils (except melaphyre soil) contained elevated levels of Cr. Concentrations of soil Ni and Zn, Pb, Cd in serpentinite soil and polluted marl soils (respectively) were significantly higher than those of other examined soils. Meadow saffron leaves from all sites (except marl sites) contained elevated levels of Cr, Co and Ni. Statistical analysis, carried out with principal component analysis (PCA) revealed that a good correlation exists between the element content in leaves and plant performance traits and soil environment. The leaf Ca content and NFP were correlated and were much higher in populations from metal (except Cr) and nutrient-poor marl soils than in those from metal (except Ni in serpentine soil)and nutrient moderate rich soils derived from melaphyre, greenstones, serpentinite, limestones and sandstones and in those from metal-rich and nutrient-poor polluted marl soils. Meadow saffron plants tended to take up higher amounts of N, P, K, Mn, Cu and Na and lower amounts of S and had much higher TLA in populations from sandstone soils than those in populations from serpentinite, melaphyre, greenstone, marl and limestone soils. The leaf Co, Ni, Cr, Mg concentrations were correlated and were much higher in populations from serpentinite, melaphyre, greenstone, polluted marl and limestone soils than those from marl and sandstone soils. The pattern of variation in NFP and TLA across the different soil types was the opposite of that for leaf N, Cu, Na, Ni, Mg and S concentrations. Redundancy analysis (RDA) enables identification of the soil variables that best explain the variance pattern of plant response. The variation explained by the soil variables (15 soil elements and soil pH) was high (79%). The forward selection of soil variables identified soil Co, Mo, Ni, Ca and Zn concentrations as significantly influencing the ordination plant traits. The variation explained by these selected variables was 55%. Thus the five soil variables appeared to be the main factors determining the pattern variation of vegetative, reproductive and nutrient traits of Colchicum autumnale.
Źródło:
Acta Societatis Botanicorum Poloniae; 2008, 77, 3; 229-239
0001-6977
2083-9480
Pojawia się w:
Acta Societatis Botanicorum Poloniae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Typology of Undergraduate Students by Academic Performance and Aspects of Achievement Motivation
Autorzy:
Žitniaková Gurgová, Beata
Nábělková, Eva
Powiązania:
https://bibliotekanauki.pl/articles/1998413.pdf
Data publikacji:
2017-03-31
Wydawca:
Wydawnictwo Adam Marszałek
Tematy:
achievement motivation
achievement motive
academic performance
undergraduate student types
cluster analysis
Opis:
The contribution presents results of the non-hierarchical cluster analysis of academic performance and aspects of achievement motivation of a sample of undergraduate students. The Achievement Motivation Questionnaire (AMQ) (Dotazník motivácie výkonu, Pardel, Maršálová, Hrabovská, 1984) was used as the research method. School success was established using the arithmetic mean of study results of 213 undergraduate students after completion of a term. In the AMQ, the Achievement Motive variable was focused on, consisting of the following aspects: achievementoriented behaviour, aspiration level, persever- ance at work, and future time orientation. The main aim of our research was to determine undergraduate student types by their academic performance and aspects of achievement motive. Based on the assessment of generated three to six-cluster solutions, the six-cluster solution appeared optimal, within which the following types of undergraduate students were identified: type of unused potential, unbalanced type, balanced type, type unoriented in time, academi- cally indifferent type, and industrious type.
Źródło:
The New Educational Review; 2017, 47; 17-28
1732-6729
Pojawia się w:
The New Educational Review
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Assessing telecommunication contractor firms using a hybrid DEA-BWM method
Autorzy:
Valizadeh, Omid
Ghiyasi, Mojtaba
Powiązania:
https://bibliotekanauki.pl/articles/29432383.pdf
Data publikacji:
2023
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
performance assessment
data envelopment analysis
best worst method
telecommunication contractor firm
Opis:
Telecommunication companies have an important role in technology development, so evaluating the performance of these companies has been an interest of managers. This article uses a hybrid method using data envelopment analysis (DEA) and the best-worst method (BWM) to measure the performance of communication companies. The hybrid DEA-BWM method is used for the weight determination and performance assessment of 17 telecommunication contractor firms in the Khorsan Razavi province of Iran. We considered four inputs: gross losses, sales cost, legal reserve, and fixed assets. On the other side, three outputs including operation income, operation profit, and retained earnings are considered as outputs. Considering the input-output parameters and using the hybrid method by seven selected criteria, we rank all contractor firms. We found that the BPM firm has the best performance while and GKS firm is found as the firm with the weakest performance. Compared with the classical DEA methods, we found more reliable results with higher discrimination power, using the hybrid DEA-BWM.
Źródło:
Operations Research and Decisions; 2023, 33, 4; 189--200
2081-8858
2391-6060
Pojawia się w:
Operations Research and Decisions
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Applications of commercial data analysis software for testing a telecommunications network
Autorzy:
Paczocha, J.
Powiązania:
https://bibliotekanauki.pl/articles/309247.pdf
Data publikacji:
2002
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Tematy:
network analysis
network estimation
network performance
quality of service
PSTN/ISDN
Opis:
This paper shows practical aspect in application commercial software to analysis data concerning information from telecommunication network. The following items are discussed: example of network estimation methodology, the main advantages of network testing system delivering information concerning quality of service (QoS) and network performance (NP) from the user's perspective, general testing system description and data analysis model and example forms of presentation.
Źródło:
Journal of Telecommunications and Information Technology; 2002, 3; 69-72
1509-4553
1899-8852
Pojawia się w:
Journal of Telecommunications and Information Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Komputerowe projektowanie ekonomiki energetycznej budynku w zintegrowanym procesie projektowm. Implikacje prawne i techniczne
Computer digital design of building energy economics within integrated investment process. Technical and legal implications.
Autorzy:
Jamroży, M.
Powiązania:
https://bibliotekanauki.pl/articles/370518.pdf
Data publikacji:
2014
Wydawca:
Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
Tematy:
BIM
symulacje
analiza ekologiczna
charakterystyka energetyczna
simulations
ecological analysis
energy performance
Opis:
W konsekwencji realizowanej przez UE polityki pro-środowiskowej, projektanci zmagają się z dużym zaostrzeniem przepisów związanych z energooszczędnością budynków. Zmiany te zaostrzają politykę energetyczną obiektów, mają na celu poprawę jakości środowiska wewnętrznego w obiekcie i w konsekwencji jego oddziaływania na środowisko. Od niedawna charakterystyki energetyczne są załącznikiem do projektu budowlanego. Dziś wpływają na formę i ostateczny kształt projektowanego budynku, wyznaczają trendy i stymulują wprowadzanie innowacyjnych rozwiązań.
As a consequence of the pro-environmental policy implemented by the EU, designers are struggling with an increase in regulations related to energy efficiency of the buildings. Those changes intensify energy policy of the buildings, they are designed to improve the quality of internal environment in the buildings, and consequently its impact on the environment. Recently, the energy performance has become an appendix to the construction project. Today, they affect the form and final shape of the designed buildings and they set trends, as well as stimulate the implementation of innovative solutions.
Źródło:
Przestrzeń i Forma; 2014, 21; 157-170
1895-3247
2391-7725
Pojawia się w:
Przestrzeń i Forma
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Multicriteria Assessment of the Academic Research Activity
Autorzy:
Kuchta, Dorota
Ryńca, Radosław
Ziaeian, Yasmin
Grudziński, Adam
Powiązania:
https://bibliotekanauki.pl/articles/578544.pdf
Data publikacji:
2017
Wydawca:
Uniwersytet Ekonomiczny w Katowicach
Tematy:
Data Envelopment Analysis
Efficiency
Performance
Research assessment
Metoda DEA (Data Envelopment Analysis)
Ocena badań
Sprawność
Wyniki
Opis:
In this paper a network DEA approach to deal with efficiency assessment will be presented and applied to the assessment of performance of members of an academic faculty of Wroclaw University of Science and Technology. The purpose of this study is to propose a solution to the problem of multicriteria assessment of faculty members at universities, discussing at the same time its advantages and disadvantages in the context of the higher educational system in Poland.
Źródło:
Multiple Criteria Decision Making; 2017, 12; 103-118
2084-1531
Pojawia się w:
Multiple Criteria Decision Making
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Application of SWOT-analysis for evaluating the public administration of the healthcare system in Ukraine
Autorzy:
Kryzyna, Nataliia
Kovalenko, Olha
Powiązania:
https://bibliotekanauki.pl/articles/1933268.pdf
Data publikacji:
2020-06-30
Wydawca:
Wydawnictwo Adam Marszałek
Tematy:
public administration
performance appraisal
SWOT analysis
health care system
strengths
weaknesses
medicine
Opis:
The health care system is an important vector of effective management in the current conditions of the Ukrainian health care system. The article deals with the analysis of the main factors influencing which is the development of effective interaction between public administration and the health care system of Ukraine. In the article we analyzed activity by a qualitative method of SWOT-analysis.
Źródło:
Reality of Politics; 2020, 12; 11-28
2082-3959
Pojawia się w:
Reality of Politics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The role of organizational culture in the performance of chosen companies
Autorzy:
Kiełbasa, Barbara
Powiązania:
https://bibliotekanauki.pl/articles/2032991.pdf
Data publikacji:
2021
Wydawca:
Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
Tematy:
organizational culture
performance
management
ratio analysis
kultura organizacyjna
wydajność
zarządzanie
analiza wskaźnikowa
Opis:
Introduction/background: Organizational culture is a relatively new issue. This concept has started to take on a great importance in modern organizations based on knowledge and innovation. The researchers and managers were faced with the problem of how to introduce values into the organization, how to implement the company's mission and vision, how to “manage” employees' creativity, how to motivate and assign tasks to employees. Another important issue concerns measuring the impact of these soft factors on solid results. Is there a relationship between organizational culture and organizational performance and how to verify it? Aim of the paper: The work deals with the topic of organizational culture in theoretical and practical terms. The aim of the work was to define the influence of organizational culture on the management performance. Materials and methods: The work is based on literature studies, the results of literary studies from empirical research and own research of the author. Index methods were used to assess the condition of enterprises based on publicly available financial statements. The research supplements the opinions of employees of these companies. Results and conclusions: In the surveyed organizations, values, relationships and cooperation are put in the first place. Employees work primarily in teams. The aim of this style of work is to improve internal communication, mutual learning and information exchange, as well as stimulating creativity. Regarding the ratio analysis, the good condition of both organizations should be noted: the financial analysis indicators did not deteriorate. It should be stated that organizational performance is influenced by both the dependent variable and the independent variable. They can be analyzed as soft factors and solid factors. The analysis of the impact of these factors can be done using financial measures. The complementary value is constituted by the relations in the organization and the values which make it possible to more effectively implement the company's strategy, mission and vision of the business.
Źródło:
Organizacja i Zarządzanie : kwartalnik naukowy; 2021, 1; 17-27
1899-6116
Pojawia się w:
Organizacja i Zarządzanie : kwartalnik naukowy
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Analysis of OpenStack Cloud Computing Platform: Features and Performance
Autorzy:
Grzonka, D.
Powiązania:
https://bibliotekanauki.pl/articles/307878.pdf
Data publikacji:
2015
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Tematy:
cloud computing
high performance computing
OpenStack
parallel environments
resource utilization analysis
virtualization
Opis:
Over the decades the rapid development of broadly defined computer technologies, both software and hardware is observed. Unfortunately, software solutions are regularly behind in comparison to the hardware. On the other hand, the modern systems are characterized by a high demand for computing resources and the need for customization for the end users. As a result, the traditional way of system construction is too expensive, inflexible and it doesn’t have high resources utilization. Present article focuses on the problem of effective use of available physical and virtual resources based on the OpenStack cloud computing platform. A number of conducted experiments allowed to evaluate computing resources utility and to analyze performance depending on the allocated resources. Additionally, the paper includes structural and functional analysis of the OpenStack cloud platform.
Źródło:
Journal of Telecommunications and Information Technology; 2015, 3; 52-57
1509-4553
1899-8852
Pojawia się w:
Journal of Telecommunications and Information Technology
Dostawca treści:
Biblioteka Nauki
Artykuł

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