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Tytuł:
Cechy i funkcje funduszy operacyjnych w Polsce
Features and Functions of Operating Funds in Poland
Autorzy:
Lemonnier, Mariola
Kisiel, Szymon
Powiązania:
https://bibliotekanauki.pl/articles/512678.pdf
Data publikacji:
2011
Wydawca:
Wydawnictwo Diecezjalne Adalbertinum
Tematy:
operating funds
Polska
Opis:
This article is devoted to issues of financial instruments, particularly hedge funds. The authors reconstruct the genesis of creation of these funds, their role and changes over the years. They describe the characteristics of hedge funds and the characteristics of the whole market of operational funds. In addition, authors describe the market of private equity / venture capital and its role in the Polish capital market. The paper describes the market of hedge funds, which role in the Polish capital market is of particular importance. The application of a strategy to secure investment in the short term, which is characterized by a high rate of return. In exchange for a fee for managing the capital entrusted, the investor is given the opportunity to maximize profits with low risk by eliminating the risk of price fluctuations. This strategy allows you to make a profit during both bull and bear market.
Źródło:
Studia Ełckie; 2011, 13; 297-307
1896-6896
2353-1274
Pojawia się w:
Studia Ełckie
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Modelowanie operacyjnego kapitału obrotowego z zastosowaniem arkusza kalkulacyjnego. Budowa i weryfikacja modelu
Modeling of an operating working capital – spreadsheet approach. Building and model verification
Autorzy:
Szpulak, Aleksandra
Powiązania:
https://bibliotekanauki.pl/articles/425135.pdf
Data publikacji:
2014
Wydawca:
Wydawnictwo Uniwersytetu Ekonomicznego we Wrocławiu
Tematy:
operating working capital
operating cash inflows and outflows
forecasts
spreadsheet approach
Opis:
Typical financial model applied in the area of short term financial management under wealth maximization approach is in a form of an analytical model, like the one built by for example [Sartoris, Hill 1983; Kim, Chung 1990]. The assumptions concerning the continuous cash flows resulting from sales and direct relationship between the size of cash flows and the size of sales result in inaccurate and biased forecasts made on the basis of such analytical models. The applicability of it is therefore questionable. The paper presents the construction and verification of the financial model of operating working capital that enables to build forecasts of better quality. Such a goal is achieved by applying the spreadsheet approach instead of analytical functions.
Źródło:
Econometrics. Ekonometria. Advances in Applied Data Analytics; 2014, 4(46); 22-33
1507-3866
Pojawia się w:
Econometrics. Ekonometria. Advances in Applied Data Analytics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Real-Time Operating Systems for Robotic Applications : a Comparative Survey
Autorzy:
Kmiecik, P.
Granosik, G.
Powiązania:
https://bibliotekanauki.pl/articles/385011.pdf
Data publikacji:
2015
Wydawca:
Sieć Badawcza Łukasiewicz - Przemysłowy Instytut Automatyki i Pomiarów
Tematy:
real-time operating system
survey
Opis:
Modern robotics brings up a variety of new challenges. Industrial-only times are gone forever. Nowadays, by performing many diversified services, robots turned out to be a part of our everyday life. There is no doubt that they should be able to interact with this new miscellaneous environment seamlessly. Along with the number of requirements, the importance of software increases. While gaining more autonomy, besides standard motion control, a wide range of cogntive tasks has to be executed simultaneously. It is quite obvious that complex systems with a lot of independent modules and many functions to perform need flexible and reliable sofware solutions. This article takes a Real-Time Operating System as an answer to the problems of the new generation robotics.By comparing selected features, it provides an evaluation of the most popular commercial and non-commercial solutions. Paper describes the key characteristics that should be taken into consideration during the design process and presents several examples of their successful robotic applications, including our own choices for decentralized controllers.
Źródło:
Journal of Automation Mobile Robotics and Intelligent Systems; 2015, 9, 3; 9-17
1897-8649
2080-2145
Pojawia się w:
Journal of Automation Mobile Robotics and Intelligent Systems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Determinants of Companies’ Financial Performance Following M&A Transactions in Poland
Autorzy:
Ocieszak, Marcin
Powiązania:
https://bibliotekanauki.pl/articles/1933633.pdf
Data publikacji:
2020
Wydawca:
Akademia Leona Koźmińskiego w Warszawie
Tematy:
mergers
acquisitions
M&A
operating performance
Opis:
Purpose: This study identifies and analyzes the factors that impact the financial performance of companies after a merger and acquisition transaction. Methodology: As many as 130 Polish market observations were analyzed with an OLS regression model to verify the research hypotheses. Results: The results reveal that the company’s size, performance before the transaction, and its international nature translated into improvement of post-transaction financial performance. Moreover, industry diversification transactions and CEO changes in acquiring a company had a negative impact on the company’s financial performance after the transaction. Originality: This investigation is the first study devoted to the Polish market in the research field of M&A determinants with the use of such a large sample.
Źródło:
Central European Management Journal; 2020, 28(4); 51-66
2658-0845
2658-2430
Pojawia się w:
Central European Management Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Charakterystyki użytkowe wielokrawędziowych rozdrabniaczy pszenicy. Część II. Wyniki badań
Operating characteristics of multi-edge cereal seeds grinder. Part II. Research results
Autorzy:
Tomporowski, A.
Powiązania:
https://bibliotekanauki.pl/articles/2070408.pdf
Data publikacji:
2009
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
rozdrabnianie
charakterystyka użytkowa
grinding
operating characteristics
Opis:
W pracy wyznaczono charakterystyki użytkowe wielokrawędziowych, wielotarczowych rozdrabniaczy materiałów, produktów przemysłu rolno-spożywczego. Zaproponowano metodykę badań uwzględniającą opracowane i opisane, w cz. I pracy, modele matematyczne podstawowych parametrów i wielkości charakterystyk użytkowych wielokrawędziowych, wielotarczowych rozdrabniaczy. Eksperymant obejmował obadania maszynowe i analizę otrzymanych wyników w świetle założeń modelowych.
Operating characteristics of multi-edge multi-disc materiał grinders used in agricultural-and-food industry were determined in the paper. Research methodology taking into account mathematical models of es-sential parameters and values of operating characteristics of multi-edge multi-disc grinders elaborated and described in part I of the paper was suggested. The experiment covered machinę tests and analysis of the results obtained in the light of model-based assumptions.
Źródło:
Inżynieria i Aparatura Chemiczna; 2009, 2; 137-138
0368-0827
Pojawia się w:
Inżynieria i Aparatura Chemiczna
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Obsługa ciągników rolniczych
Support for agricultural tractors
Autorzy:
Kiedrowicz, M.
Nagy, L.
Powiązania:
https://bibliotekanauki.pl/articles/314261.pdf
Data publikacji:
2011
Wydawca:
Instytut Naukowo-Wydawniczy "SPATIUM"
Tematy:
ciągnik rolniczy
obsługa
farm tractor
operating
Opis:
W artykule zaprezentowano podstawową obsługę ciągników rolniczych. Omówione zostały zagadnienia obejmujące przygotowanie ciągnika do pracy, uzupełnianie paliwa, oleju i płynu chłodniczego, sprawdzeniu ogumienia, układu kierowniczego, hamulców i sprzęgła, a także uruchomieniu silnika i pracy z ciągnikiem.
The article discusses the basic operation of agricultural tractors, including the issues of preparation of the tractor to work, refueling, oil and coolant, checking the tires, steering, brakes and clutch and the engine is started and work with the tractor.
Źródło:
Autobusy : technika, eksploatacja, systemy transportowe; 2011, 12, 5; 191-194
1509-5878
2450-7725
Pojawia się w:
Autobusy : technika, eksploatacja, systemy transportowe
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ocena efektywności finansowej przedsiębiorstw turystycznych notowanych na GPW w Warszawie w latach 2007–2011
The Evaluation of Financial Situation of Tourism Companies Listed on the Warsaw Stock Exchange in 2007–2011
Autorzy:
Comporek, Michał
Powiązania:
https://bibliotekanauki.pl/articles/906377.pdf
Data publikacji:
2012
Wydawca:
Uniwersytet Łódzki. Wydawnictwo Uniwersytetu Łódzkiego
Tematy:
tourism companies
financial analysis
operating ratios
Opis:
Tourism plays a significant role on national economies of many countries all over the world. It affects on the GDP of individual countries, their balance of payments, budget, inflation, etc. On the other hand tourism activities the regions and tourist resorts and improves the economic situations of households. However, the global tourism market is characterized by great variability and low predictability. The main purpose of this article is to present a summary of the financial analysis of tourism companies listed on the Stock Exchange in Warsaw. For this purpose, author uses selected operating ratios (with particular emphasis on profitability ratios).
Źródło:
Acta Universitatis Lodziensis. Folia Oeconomica; 2012, 267
0208-6018
2353-7663
Pojawia się w:
Acta Universitatis Lodziensis. Folia Oeconomica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Znaczenie nadwyżki operacyjnej w budżecie gmin i miast na prawach powiatu na przykładzie województwa wielkopolskiego i lubelskiego
The importance of operating surplus in the budget of municipalities and cities with county rights on the example of the Wielkopolskie and Lubelskie voivodeship
Autorzy:
Krzemińska, Agnieszka
Powiązania:
https://bibliotekanauki.pl/articles/2128084.pdf
Data publikacji:
2018
Wydawca:
Uniwersytet w Białymstoku. Wydawnictwo Uniwersytetu w Białymstoku
Tematy:
gminy
nadwyżka operacyjna
municipalities
operating surplus
Opis:
Znaczenie nadwyżki operacyjnej w budżecie jednostek samorządu terytorialnego wzrosło w związku z obowiązywaniem od 2011 roku wymogu równoważenia budżetu bieżącego, a od 2014 roku indywidualnego wskaźnika zadłużenia, wyliczanego na podstawie nadwyżki operacyjnej. Rozwiązania te skutkowały przeformułowaniem gospodarki finansowej tych jednostek. Celem artykułu jest zbadanie na przykładzie województwa wielkopolskiego i lubelskiego, w jakich jednostkach samorządu terytorialnego występuje nadwyżka operacyjna i na co jest przeznaczana. Realizacji wyznaczonego celu posłużyła analiza takich wskaźników, jak średnie dochody i wydatki bieżące oraz wynik operacyjny i wydatki majątkowe. Zostało również przeanalizowane wykorzystanie nadwyżki operacyjnej przez badane jednostki do zaciągania i spłaty zobowiązań.
The importance of the operating surplus in the budget of local government units increased due to the requirement to balance the current budget from 2011, and from 2014 the individual debt index, calculated on the basis of the operating surplus. These solutions resulted in a reformulation of the financial management of these units. The purpose of the article is to examine, on the example of the Wielkopolskie and Lubelskie voivodships, in which local government units the operating surplus is available and for which it is allocated. The implementation of the set objective was used to analyze such indicators as average current income and spending as well as operating result and property spending. The use of the operating surplus by the audited units to incur and repay liabilities was also examined.
Źródło:
Optimum. Economic Studies; 2018, 2(92); 61-73
1506-7637
Pojawia się w:
Optimum. Economic Studies
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
ESG a wyzwania dekarbonizacyjne przedsiębiorstw działających w Polsce
ESG and decarbonisation challenges for companies operating in Poland
Autorzy:
Zieliński, Dominik
Powiązania:
https://bibliotekanauki.pl/articles/2230936.pdf
Data publikacji:
2023
Wydawca:
Kancelaria Sejmu. Biuro Analiz Sejmowych
Tematy:
ESG
decarbonisation
companies operating in Poland
Opis:
The purpose of the article is to assess to what extent decarbonisation poses an issue for companies operating in Poland. The paper begins with a description of the regulatory frame of ESG reporting which specifies regulatory requirements for companies. This is followed by an assessment of the pace of decarbonisation of companies based on available secondary data and identification of factors that determine the pace of adaptation of Polish companies to EU decarbonisation plans. The analysis shows that companies operating in Poland are not fully prepared for the ESG regulatory frame. Polish conditions may put companies in need of financial, infrastructural and educational support.
Źródło:
Studia BAS; 2023, 2(74); 127-143
2080-2404
2082-0658
Pojawia się w:
Studia BAS
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of Inaccuracy Measurement On Middle- Operating Control Costs
O wpływie niedokładności pomiarów na koszty kontroli międzyoperacyjnej
Autorzy:
Chmielińska, Magdalena
Powiązania:
https://bibliotekanauki.pl/articles/904805.pdf
Data publikacji:
2013
Wydawca:
Uniwersytet Łódzki. Wydawnictwo Uniwersytetu Łódzkiego
Tematy:
middle – operating control costs
qualification mistake
Opis:
Control charts are commonly used in plants to monitor the correctness of manufacturing process, due to their simplicity and explicitness of diagnosis. Qualification mistakes make that the signals, appear either with lag, or in case of regulated process. False signals, as well as lack of appropriately early signal make financial loss. The purpose of this article is to pay attention to shaping of middle – operating control costs, especially in case of appearance of qualification mistakes. The accepted hypothesis states that qualification mistakes cause considerable increase in the middle – operating control costs.
Karta kontrolna jest powszechnie stosowana do monitorowania prawidłowości przebiegu procesów produkcyjnych, ze względu na prostotę prowadzenia i jednoznaczność diagnozy. Popełniane błędy obniżają jednak jej skuteczność. Błędne sygnały, jak i brak odpowiednio wczesnego sygnału narażają przedsiębiorstwo na straty. Celem niniejszego artykułu jest zwrócenie uwagi na kształtowanie się kosztów kontroli międzyoperacyjnej, szczególnie w przypadku występowania błędów kwalifikacji. Postawiona została hipoteza głosząca, iż błędy kwalifikacji przyczyniają się do znacznego wzrostu kosztu kontroli międzyoperacyjnej.
Źródło:
Acta Universitatis Lodziensis. Folia Oeconomica; 2013, 286
0208-6018
2353-7663
Pojawia się w:
Acta Universitatis Lodziensis. Folia Oeconomica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Parametric method of prediction of the ship operating costs
Autorzy:
Michalski, J. P.
Powiązania:
https://bibliotekanauki.pl/articles/962819.pdf
Data publikacji:
2004
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:
ship design theory
ship operating costs
Opis:
Paper presents results of studies on a parametric method of predicting ship operating costs - useful in the preliminary ship design. Conception and theoretical basis of the method are presented, identified are also factors of significant importance for the ship operating costs, taking into account changes in the value of money. Approximation formulae for estimating the operating cost components have been developed as well as a computational algorithm based on a minimum Required Freight Rate (RFR). The useful character of the method is illustrated by examples of operating cost predictions for four different ship types designed in the Eureka project E!2772, i.e.: SINE 202 universal container carrier, SINE 203 oil product tanker, SINE 204 ro-ro ship and SINE 205 river-sea ship.
Źródło:
Polish Maritime Research; 2004, S 1; 20-23
1233-2585
Pojawia się w:
Polish Maritime Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Charakterystyki użytkowe rozdrabniaczy nasion zbóż. Część I. Model matematyczny
Operating characteristics of a multi-edge cereal seeds grinder. Part I. Mathematical model
Autorzy:
Tomporowski, A.
Powiązania:
https://bibliotekanauki.pl/articles/2070422.pdf
Data publikacji:
2009
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
rozdrabnianie
charakterystyka użytkowa
grinding
operating characteristics
Opis:
W pracy dokonano analizy podstawowych parametrów procesu rozdrabniania charakterystyk użytkowych wielokrawędziowego, wielotarczowego rozdrabniania nasion zbóż. Zaproponowano model matematyczny sił, momentów i mocy rozdrabniania jako syntezę charakterystyk użytkowych wielokrawędziowych, wielotarczowych rozdrab-niaczy nasion zbóż.
Essential parameters of grinding process, operating characteristics, multi-edge process, multi-disc grinding of cereal seeds were analyzed in the paper. A mathematical model of forces, moments and power of grinding was proposed to elaborate operating characteristics of multiedge multi-disc cereal seeds' grinders.
Źródło:
Inżynieria i Aparatura Chemiczna; 2009, 2; 135-136
0368-0827
Pojawia się w:
Inżynieria i Aparatura Chemiczna
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Action as a criterion of the car operating effectivenes
Działanie jako kryterium oceny efektywności eksploatacji samochodu
Autorzy:
Postrzednik, S.
Powiązania:
https://bibliotekanauki.pl/articles/375538.pdf
Data publikacji:
2016
Wydawca:
Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
Tematy:
car operating effectiveness
operating parameters
road car tests
efektywność eksploatacji samochodu
parametry eksploatacji
testy ruchu drogowego
Opis:
Currently used criteria for determining car operating efficiency in road traffic are, among others, emission of harmful substances, consumption of engine driving fuels, technical service and reliability of operation, safety of use. The operational characteristics of the car in terms of engine driving fuel consumption data is usually recognized as so-called road specific fuel consumption. An important deficiency of this approach is the failure to take into account the influence of the time on the journey’s effectiveness and the final result of the entire project. To obtain a new solution in this range in the analysis, a quantity called "action", which at last will be treated as the criterion of the car operating effectiveness, was used. The quantity of action is the product of the performed work and its realisation time. Many phenomena and processes in nature take place according to the principle of "minimum of action" - this criterion can be applied in the analysis of the car’s operating efficiency taking place in road traffic. An approach of this issue is presented in this article, wherein the basic data for analysis were obtained in the framework of the car tests performed at the real traffic conditions.
Kryteriami efektywności eksploatacji samochodów aktualnie stosowanymi są m.in. te dotyczące: emisji substancji szkodliwych, zużycia materiałów pędnych, obsługi technicznej i niezawodności eksploatacji, komfortu oraz bezpieczeństwa użytkowania. Charakterystyka eksploatacyjna samochodu w zakresie wielkości zużycia materiałów pędnych (benzyna, olej napędowy, LPG) ujmowana jest zwykle jako tzw. Drogowe (objętościowe, masowe) zużycie paliwa. Istotnym niedostatkiem takiego podejścia jest fakt nieuwzględniania w analizie wpływu czasu realizacji podróży na wynik całego przedsięwzięcia. W tym celu wykorzystano wielkość zwaną „działaniem”. Wiele zjawisk i procesów zachodzi według zasady „minimum działania”, dlatego też kryterium to może znaleźć zastosowanie w analizie efektywności ruchu drogowego. Takie ujęcie zagadnienia przedstawiono w artykule, przy czym podstawowe dane do analizy pozyskano w ramach testów zrealizowanych w warunkach ruchu drogowego.
Źródło:
Transport Problems; 2016, 11, 2; 91-101
1896-0596
2300-861X
Pojawia się w:
Transport Problems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis of supervision of port authority on the activities of loading and unloading dangerous goods in the port of Tanjung Perak Surabaya
Autorzy:
Haryanto, Dwi
Rahayu, Trisnowati
Sianturi, Intan
Powiązania:
https://bibliotekanauki.pl/articles/970681.pdf
Data publikacji:
2020-06-30
Wydawca:
Uniwersytet Gdański. Wydział Ekonomiczny
Tematy:
syahbandar (harbourmaster)
supervision
dangerous goods
operating procedures
Opis:
In this study the focus is on the Enactment of Law No.17 of 2008, concerning shipping has experienced a lot of improvements in the function of Harbor Harbor Safety and Security. Safety and security issues in shipping are a big responsibility in port. Syahbandar (Harbourmaster) has the highest authority to carry out and supervise the fulfillment of the provisions in the legislation to ensure the safety and comfort of the voyage. The aim of this research is to examined the supervision system of port authority on the activities of loading and unloading dangerous goods in the port of tanjung perak surabaya. This type of research carried out in this research is to use descriptive research. The results of the study show that the application of work standards in the field is not yet optimal in accordance with the Standard Operating Procedures so that the task in supervising dangerous goods has not been carried out properly, inadequate facilities and infrastructures at the Port thus reducing the function of the Port in the supervision of dangerous goods and the limited number of personnel at the Port of Tanjung Perak so that services in the supervision of dangerous goods are less than optimal. JEL classification: L150; L23; L81; M50; M11
Źródło:
Współczesna Gospodarka; 2020, 11, 1 (35); 39-43
2082-677X
Pojawia się w:
Współczesna Gospodarka
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Modelling critical infrastructure operation process including operating environment threats
Autorzy:
Kołowrocki, K.
Soszyńska-Budny, J.
Powiązania:
https://bibliotekanauki.pl/articles/2069007.pdf
Data publikacji:
2016
Wydawca:
Uniwersytet Morski w Gdyni. Polskie Towarzystwo Bezpieczeństwa i Niezawodności
Tematy:
critical infrastructure
operation process
operating environment threats
Opis:
In the article the traditional semi-Markov approach to a complex technical system operation process modeling is developed to modelling a critical infrastructure operation process including operating environment threats. The method of defining the parameters of this operation process is presented and a new procedure of their determining in the case when the critical infrastructure operating threats are not explicit sepatated in this process is proposed.
Źródło:
Journal of Polish Safety and Reliability Association; 2016, 7, 3; 81--88
2084-5316
Pojawia się w:
Journal of Polish Safety and Reliability Association
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Przegląd mechanizmów zabezpieczania systemu operacyjnego
Review of the operating systems protection mechanisms
Autorzy:
Kaczmarek, J.
Wróbel, M.
Powiązania:
https://bibliotekanauki.pl/articles/267871.pdf
Data publikacji:
2007
Wydawca:
Politechnika Gdańska. Wydział Elektrotechniki i Automatyki
Tematy:
bezpieczeństwo
systemy operacyjne
Linux
security
operating systems
Opis:
Zapewnienie bezpieczeństwa systemu komputerowego jest jednym z najważniejszych zadań systemu operacyjnego. W artykule zostaną przedstawione mechanizmy i technologie zabezpieczania systemu operacyjnego Linux. Zostaną opisane metody aktywnej ochrony systemów operacyjnych poprzez blokowanie połączeń sieciowych i ograniczanie praw dostępu aplikacji do zasobów. Przedstawione zostaną również rozwiązania ograniczające szkody dokonywane przez intruzów. Różnorodność stosowanych mechanizmów bezpieczeństwa jest warunkiem skutecznej ochrony systemów komputerowych.
One of the most important tasks of the operating system is to provide computer system security. This paper describes protection mechanisms and technologies for the Linux operating system. We first present methods of active protection through blocking net connections and limiting application privileges. Then we present solutions for minimizing damages inflicted by the intruders. Diversity of security mechanisms is a required condition of effective computer systems protection.
Źródło:
Zeszyty Naukowe Wydziału Elektrotechniki i Automatyki Politechniki Gdańskiej; 2007, 23; 57-60
1425-5766
2353-1290
Pojawia się w:
Zeszyty Naukowe Wydziału Elektrotechniki i Automatyki Politechniki Gdańskiej
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
SECURITY ASSESSMENT AND OPTIMIZATION OF ENERGY SUPPLY (NEURAL NETWORKS APPROACH)
Autorzy:
Jasiński, Tomasz
Ścianowska, Agnieszka
Powiązania:
https://bibliotekanauki.pl/articles/488919.pdf
Data publikacji:
2015
Wydawca:
Instytut Badań Gospodarczych
Tematy:
energy supply
security
neural networks
operating reserve
Opis:
The question of energy supply continuity is essential from the perspective of the functioning of society and the economy today. The study describes modern methods of forecasting emergency situations using Artificial Intelligence (AI) tools, especially neural networks. It examines the structure of a properly functioning model in the areas of input data selection, network topology and learning algorithms, analyzes the functioning of an energy market built on the basis of a reserve market, and discusses the possibilities of economic optimization of such a model, including the question of safety.
Źródło:
Oeconomia Copernicana; 2015, 6, 2; 129-141
2083-1277
Pojawia się w:
Oeconomia Copernicana
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A SuFET based sensors for nano-microscope
Autorzy:
Sklyar, R.
Powiązania:
https://bibliotekanauki.pl/articles/385147.pdf
Data publikacji:
2007
Wydawca:
Sieć Badawcza Łukasiewicz - Przemysłowy Instytut Automatyki i Pomiarów
Tematy:
biosignals
SuFET
nanoFET
biosusceptibility
nanoscope
operating conditions
Opis:
A superconducting field-effect transistor (SuFET) based transducer (sensor) with carbon nanotubes (CNT) or pickup coil kind of input circuit for the nerve and neuron impulses, DNA recombination signals, flows of biochemical molecules, micro- and nanoscopy, and biosusceptibility has been designed. A nanoSuFET with a high-temperature superconducting channel is introduced into the nerve fibre or brain tissue for transducing their signals in both directions. Pickup coils are implanted into an organism in order to obtain the natural or artificially excited biosignals from the organs and tissues. The range of picked up signals varies from 0.6 nA to 10 žA with frequencies from 20 to 2000 Hz. The output signal lies in the range of (-5¸5)V, (7¸0)×1017/cm3 molecules and (2¸10) pH. The sensitivity of this micro- or nanoscope can be estimated as HJ= 10-4 (A•m/?Hz) with SNR equal to 104. The sensitivity of an advanced first-order biogradiometer is equal to 3fT/?Hz. The smallest resolvable change in magnetic moment detected by this system in the band 10 Hz is 1 fJ/T.
Źródło:
Journal of Automation Mobile Robotics and Intelligent Systems; 2007, 1, 3; 3-20
1897-8649
2080-2145
Pojawia się w:
Journal of Automation Mobile Robotics and Intelligent Systems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Funkcjonalność systemu LINUX uruchamianego z pamięci USB
Functionality of the USB bootable Linux operating system
Autorzy:
Kaczmarek, J.
Wróbel, M.
Powiązania:
https://bibliotekanauki.pl/articles/266732.pdf
Data publikacji:
2010
Wydawca:
Politechnika Gdańska. Wydział Elektrotechniki i Automatyki
Tematy:
systemy operacyjne
Linux
bezpieczeństwo
operating system
security
Opis:
System operacyjny Linux z uwagi na swoją funkcjonalność, użyteczność oraz warunki licencyjne jest coraz powszechniej wykorzystywany. Wśród licznych dystrybucji tego systemu można wyróżnić takie, które są uruchamiane bezpośrednio z pamięci półprzewodnikowych USB. W artykule zostanie przedstawiona funkcjonalność i parametry użytkowe opracowanej dystrybucji cdlinux.pl uruchamianej z pamięci USB. Dystrybucja charakteryzuje się bezpieczeństwem zainstalowanego systemu operacyjnego, przenośnością, a jednocześnie modyfikowalnością konfiguracji. Dystrybucja umożliwia również zapis i trwałe przechowywanie danych wytwarzanych przez aplikacje użytkowe. System może być uruchamiany bezpośrednio z nośnika podłączonego przez złącze USB, bez konieczności instalacji na dysku twardym, co stwarza możliwości jego szerokiego zastosowania.
Due to the functionality, usability and license conditions the Linux operating system is becoming popular. Among the many distribution types, USB bootable Linux should be distinguished. The paper presents the functionality and usability of the cdlinux.pl distribution that works directly from a USB drive. Distribution is secure, portable and flexible. Distribution provides permanent storage of data generated by user applications. The system can be run directly from the media connected via USB, without installing on your hard disk, which creates the possibility of its widespread use.
Źródło:
Zeszyty Naukowe Wydziału Elektrotechniki i Automatyki Politechniki Gdańskiej; 2010, 28; 81-84
1425-5766
2353-1290
Pojawia się w:
Zeszyty Naukowe Wydziału Elektrotechniki i Automatyki Politechniki Gdańskiej
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Linux Scheduler Improvement for Time Demanding Network Applications, Running on Communication Platform Systems
Autorzy:
Hasse, M.
Nowicki, K.
Powiązania:
https://bibliotekanauki.pl/articles/308906.pdf
Data publikacji:
2009
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Tematy:
communication platform systems
Linux
operating system
scheduler
Opis:
Communication platform systems as, e.g., advanced telecommunication computing architecture (ATCA) standard blades located in standardized chassis, provides high level communication services between system peripherals. Each ATCA blade brings dedicated functionality to the system but can as well exist as separated host responsible for servicing set of task. According to platform philosophy these parts of system can be quite independent against another solutions provided by competitors. Each system design can be different and can face with many computer systems design problems. One of the most difficult design problems to solve is system integration with a set of components running on different operating system levels. This paper presents Linux scheduler improvement possibility to make user space application classified as time demanding (required to be serviced by CPU in given amount of time) running in user space together with complicated kernel software structure in the system.
Źródło:
Journal of Telecommunications and Information Technology; 2009, 2; 63-69
1509-4553
1899-8852
Pojawia się w:
Journal of Telecommunications and Information Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Auxiliary intelligent operating system for dragline stripping equipment in surface mining
Autorzy:
Sun, J.-D.
Zhang, R.-X.
Powiązania:
https://bibliotekanauki.pl/articles/88889.pdf
Data publikacji:
2017
Wydawca:
Politechnika Wrocławska. Wydział Geoinżynierii, Górnictwa i Geologii. Instytut Górnictwa
Tematy:
dragline stripping
intelligent operating system
operational efficiency
Opis:
In order to improve operation skill of the operators, the design of the auxiliary intelligent operating system of the dragline was studied. Whereby the gyroscopes incorporated in smartphone and data sequence filter algorithm, the automatic collection function of operation cycle, the rotation angle and other parameters of the dragline are attained. In line with the relations among the rotation angle of equipment operation, time-spent and the acceleration, the ratio of the acceleration and deceleration rotation angle in full load rotation and non-loaded return stage are acquired respectively. The function of bucket in rotation was realized. Comprehensive score calculation standard of the technique level of the dragline-based operation was developed, and the function of automatic checking the operation level was effectuated. Field experiment results indicated that the operators’ faults are markedly reduced as the auxiliary intelligent operating system is employed. By using the system the operation behavior of low power slow rotation in rain, snow, low atmospheric pressure and other severe weather conditions can be reduced, assuring all-weather efficient and safe operation of dragline.
Źródło:
Mining Science; 2017, 24; 251-266
2300-9586
2353-5423
Pojawia się w:
Mining Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ensuring Cleanliness in Operating Theatres
Autorzy:
Charkowska, A.
Powiązania:
https://bibliotekanauki.pl/articles/90421.pdf
Data publikacji:
2008
Wydawca:
Centralny Instytut Ochrony Pracy
Tematy:
air cleanliness
surface cleanliness
operating room
hospital
Opis:
High cleanliness of a hospital environment is necessary to ensure safe working conditions for the medical staff, a correct process of hospitalization and to protect hospital visitors, an aspect rarely mentioned. A supply of air cleaned in highly-effective air filters to hospital wards with air conditioning systems and exhaust of infected air will help in maintaining the required standards of cleanliness. This article presents information on recommended classes of air and surface cleanliness, with special focus on operating theatres and suites.
Źródło:
International Journal of Occupational Safety and Ergonomics; 2008, 14, 4; 447-453
1080-3548
Pojawia się w:
International Journal of Occupational Safety and Ergonomics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
An impact of the efficient functioning of the ventilation and air-conditioning system on thermal comfort of the medical staff in the operating room
Autorzy:
Jankowski, T.
Młynarczyk, M.
Powiązania:
https://bibliotekanauki.pl/articles/123676.pdf
Data publikacji:
2016
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
ventilation
air velocity
microclimate
operating room
hospital
Opis:
Ventilation and air conditioning systems are necessary for developing proper parameters of indoor environment in operating rooms. The main task of ventilation and air conditioning in those specific areas consists in creating desirable temperature, reducing the number of microorganisms and the concentrations of hazardous gases and substances in the air, as well as ensuring the proper direction of airflow. In Poland, indoor environment in operating rooms has to comply with the requirements set out in three regulations (Journal of Laws of 2002 No. 75, item 690, as amended, Journal of Laws of 2002 No. 217, item 1833, Journal of Laws of 2011 No. 31, item 158, as amended) and the document entitled "Guidelines for the design of general hospitals". Given insufficient accuracy of the abovementioned national documents, it is a common practice to use foreign standards, i.e. ASHRAE Standard 170-2013, DIN 1946-4: 2008 and FprCEN TR 16244: 2011. When considering the conditions for thermal comfort, it is important to bear in mind a close link between air flow velocity and air temperature. Air in the zone occupied by patients and medical staff must not cause the sensation of draft. Furthermore, air velocity should be sufficient to eliminate interference caused by the presence of people and other sources of heat. It should also reduce the turbulence level in the air in the operating room. Efficient functioning of ventilation and air conditioning was tested during treatments and operations carried out on three wards of a Warsaw hospital. Tests were performed with the participation of medical staff from various surgical units. They were asked to perform minor manual tasks to simulate work on the operating table, and to complete a questionnaire on subjective thermal sensation. The applied methodology is widely used during testing of general and local ventilation in public buildings. Air temperature, relative humidity, air flow supply and exhaust air from the operating room were deter-mined on the basis of VelociCalc 8360 and Testo 435 anemometers with a 3-function probe and 3 vane probes with the diameter of 16 mm, 60 mm and 100 mm. Throughout the study, microclimate conditions in the operating rooms were controlled by the EHA MM101 microclimate meter. Test results showed that the microclimate parameters met the requirements of the aforementioned documents. However, individual thermal sensations reported by the medical staff pointed to the lack of thermal comfort and, in extreme cases, e.g. when using lead aprons during operations, perception of the thermal environment as ‘very hot’. The efficiency and type of air distribution in operating rooms has a decisive effect on the results.
Źródło:
Journal of Ecological Engineering; 2016, 17, 5; 114-119
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The effect of pressure on heat transfer during pool boiling of water-A1[2]0[3] and water-Cu nanofluids on stainless steel smooth tube
Autorzy:
Cieślinski, J.T.
Kaczmarczyk, T.Z.
Powiązania:
https://bibliotekanauki.pl/articles/185613.pdf
Data publikacji:
2011
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
nanofluid
ciśnienie robocze
pool boiling
operating pressure
Opis:
Experimental investigation of heat transfer during pool boiling of two nanofluids, i.e. water-Al203 and water-Cu has been carried out. Nanoparticles were tested at the concentration of 0.01%, 0.1%, and 1% by weight. The horizontal smooth stainless steel tubes having 10 mm OD and 0.6 mm wall thickness formed the test heater. The experiments have been performed to establish the influence of nanofluids concentration on heat transfer characteristics during boiling at different absolute operating pressure values, i.e. 200 kPa, ca. 100 kPa (atmospheric pressure) and 10 kPa. It was established that independent of nanoparticle materials (A1203 and Cu) and their concentration, an increase of operating pressure enhances heat transfer. Generally, independent of operating pressure, sub- and atmospheric pressure, and overpressure, an increase of nanoparticle concentration caused heat transfer augmentation.
Źródło:
Chemical and Process Engineering; 2011, 32, 4; 321-332
0208-6425
2300-1925
Pojawia się w:
Chemical and Process Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Portable userspace virtual filesystem switch
Autorzy:
Faber, Ł.
Boryczko, K.
Powiązania:
https://bibliotekanauki.pl/articles/305654.pdf
Data publikacji:
2013
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
userspace virtual filesystem
operating systems
ptrace
FUSE
Opis:
Multiple different filesystems — including disk-based, network, distributed, abstract — are an integral part of every operating system. They are usually written as kernel modules and abstracted to the user via a virtual filesystem switch. In this paper, we analyze the feasibility of reimplementing the virtual filesystem switch as a userspace daemon and applicability of this approach in real-life usage. Such reimplementation will require a way to virtualize processes behavior related to filesystem operations. The problem is non-trivial, as we as-sume limited capabilities of the VFS switch implemented in userspace. We present a layered architecture comprising of a monitoring process, the VFS abstraction and real filesystem implementations. All working in userspace. Then, we evaluate this solution in four areas: portability, feasibility, usability, and performance. Our results demonstrate possible gains in the use of a userspace-based approach with monolithic kernels, but also underline problems that are encountered in this approach.
Źródło:
Computer Science; 2013, 14 (3); 345-365
1508-2806
2300-7036
Pojawia się w:
Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Next Pandemic? Yes, Please! How Covid-19 Pandemic Improved the Financial Condition of Polish Hospitals
Autorzy:
Bem, Agnieszka
Prędkiewicz, Paweł
Siedlecki, Rafał
Ucieklak-Jeż, Paulina
Žukovskis, Jan
Powiązania:
https://bibliotekanauki.pl/articles/36092684.pdf
Data publikacji:
2024
Wydawca:
Uniwersytet Łódzki. Wydawnictwo Uniwersytetu Łódzkiego
Tematy:
hospital financial condition
pandemic
operating margin
ROA
Opis:
The purpose of the article. The study aims to analyze how these special rules of financing during the pandemic affected the financial situation of hospitals in Poland. Methodology. We analyzed a sample of 86 Polish hospitals from 2019 to 2021. The financial condition is assessed based on financial ratios and the synthetic measure M1. We employ the Kruskall-Wallis test to confirm the differences between the values of financial ratios in the analyzed period. Results of the research. We confirm that due to the special rules and financing, combined with underperformance, the financial condition of Polish hospitals has slightly improved – especially in the case of operating margin, EAT to debt ratio and ROA.
Źródło:
Finanse i Prawo Finansowe; 2023, 1 (Numer Specjalny); 71-88
2391-6478
2353-5601
Pojawia się w:
Finanse i Prawo Finansowe
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Nowa perspektywa bilansu. Wartość poznawcza i analityczna – studium przypadku
A new balance sheet perspective. Cognitive and analytical value – case study
Autorzy:
Remlein, Marzena
Rówińska-Kráľ, Małgorzata
Powiązania:
https://bibliotekanauki.pl/articles/516003.pdf
Data publikacji:
2020
Wydawca:
Stowarzyszenie Księgowych w Polsce
Tematy:
bilans
analiza finansowa
aktywa operacyjne
aktywa nieoperacyjne
kapitał
balance sheet
financial analysis
operating assets
non-operating assets
capital
Opis:
Bilans jest postrzegany jako istotny element sprawozdania finansowego o największym zakresie informacji umożliwiających ocenę sytuacji majątkowej i finansowej każdego podmiotu gospodarczego. Wyniki analizy finansowej, dokonanej na podstawie informacji zawartych w bilansie, są wykorzystywane zarówno przez interesariuszy zewnętrznych, np. inwestorów, jak i kadrę zarządzającą. Brak jednak rozważań na temat struktury i merytorycznego zakresu poszczególnych pozycji bilansowych. Autorki dostrzegają ten problem i podejmują próbę jego rozwiązania. Problem badawczy niniejszego artykułu odnosi się do sposobu prezentacji zasobów majątkowych oraz pozycji kapitałowych w bilansie oraz ich wartości poznawczej. Przedmiotem prowadzonych w niniejszym artykule rozważań jest autorska koncepcja bilansu odnosząca się do innego, aniżeli w formule obowiązującej według ustawy o rachunkowości, ujęcia składników majątkowych oraz źródeł ich finansowania. Celem artykułu jest zaprezentowanie walorów poznawczych i analitycznych autorskiej koncepcji prezentacji aktywów i pasywów w bilansie. W części teoretycznej przeprowadzono studia literatury, natomiast w części empirycznej zastosowano metodę studium przypadku oraz metody analizy finansowej. O oryginalności badań świadczy autorska propozycja bilansu oraz zaprezentowanie jej walorów poznawczych i analitycznych. Wnioski wysunięte z przeprowadzonych rozważań i badań empirycznych dowodzą, że zaproponowany bilans ma istotną wartość poznawczą oraz analityczną.
The balance sheet is seen as an important element of the financial statement with the largest scope of information, enabling the assessment of the property and financial standing of each company. The results of the financial analysis based on the information of the balance sheet are used by both external stakeholders and the management. However, there are no considerations regarding the structure and substantive scope of individual balance sheet items. The authors notice this problem and try to solve it. The research problem of this paper relates to how assets, equity, and liabilities are presented in the balance sheet, as well as their cognitive value. The aim of the paper is to present the cognitive and analytical values of the author's concept of presenting assets, equity, and liabilities in the balance sheet. In the theoretical part, a literature review was carried out, while in the empirical part, the case study method and financial analysis methods were used. The originality of the research is demonstrated by the original bal-ance sheet proposal and a presentation of its cognitive and analytical values. The conclusions drawn from the considerations and empirical studies demonstrate that the proposed balance sheet has significant cog-nitive and analytical value.
Źródło:
Zeszyty Teoretyczne Rachunkowości; 2020, 108(164); 151-165
1641-4381
2391-677X
Pojawia się w:
Zeszyty Teoretyczne Rachunkowości
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The impact of batch flotation tests on the industrial plant prediction
Autorzy:
Vallejos, Paulina
Powiązania:
https://bibliotekanauki.pl/articles/24603655.pdf
Data publikacji:
2023
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
batch flotation
rougher banks
standard protocol
operating condition
Opis:
To predict the metallurgical results of industrial plants, laboratory batch flotation tests are carried out, relating both operations through scale-up factors. However, robust scale-up procedures and well-defined laboratory protocols are necessary to reach reliable results at industrial scale. In this paper, results from different flotation batch tests are presented, analysing the effect of batch protocol in terms of operating conditions, operator, ore type, water quality, and others on the metallurgical response. Additionally, the ability of batch responses to describe industrial operations and determine scale-up factors was analysed. Then, a sensitivity analysis was carried out, considering the effect of batch and industrial conditions on the estimation of scale-up factors. Results showed that the batch response significantly changes, depending on the operating conditions, flotation operator, and batch flotation machine, even for the same cell design. Additionally, it was observed that the batch recovery significantly changes when modifying ore type and water quality, which can cause changes in batch and/or industrial operation, affecting the scale-up factors. In addition, results showed that the scale-up factors varied significantly by changing operating conditions in a batch cell. This also occurs in plants when metallurgical performance changes, for example, due to a modification in launder design and/or operating condition, to increase recovery, or due to control limitations that prevent efficient metallurgical performance.
Źródło:
Physicochemical Problems of Mineral Processing; 2023, 59, 5; art. no. 177609
1643-1049
2084-4735
Pojawia się w:
Physicochemical Problems of Mineral Processing
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Operational tests of an electrostatic precipitator reducing low dust Indexed by: emission from solid fuels combustion
Autorzy:
Machnik, Ryszard
Więckowski, Łukasz
Powiązania:
https://bibliotekanauki.pl/articles/2038191.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Polskie Naukowo-Techniczne Towarzystwo Eksploatacyjne PAN
Tematy:
air protection
low emission
electrostatic precipitator
operating parameters
Opis:
The article presents the continuation of the research aimed at designing, manufacturing and selecting the operating parameters of the electrostatic precipitator for household applications. The tests were carried out in the laboratory and real conditions. The object of the research was a pre-production prototype of the electrostatic precipitator installed in the flue gas duct of a single-family building. The source of exhaust gases was a coal-fired, low-temperature water heating boiler with a nominal power of 21 kW (old generation boiler-year of production: 2007). The obtained results showed that the adopted design of the electrostatic precipitator enables the reduction of dust emissions generated in the combustion of solid fuels in households at relatively low operating costs.
Źródło:
Eksploatacja i Niezawodność; 2021, 23, 3; 569-574
1507-2711
Pojawia się w:
Eksploatacja i Niezawodność
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Experience Report: Towards Extending an OSEK-Compliant RTOS with Mixed Criticality Support
Autorzy:
Gupta, T.
Luit, E. J.
van den Heuvel, M. M. H. P.
Bril, R. J.
Powiązania:
https://bibliotekanauki.pl/articles/384148.pdf
Data publikacji:
2018
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
OSEK
RTOS
mixed criticality
real-time operating system
Opis:
Background: With an increase of the number of features in a vehicle, the computational requirements also increase, and vehicles may contain up to 100 Electronic Control Units (ECUs) to accommodate these requirements. For cost-effectiveness reasons, amongst others, it is considered desirable to limit the growth of, or preferably reduce, the number of ECUs. To that end, mixed criticality is a promising approach that received a lot of attention in the literature, primarily from a theoretical perspective. Aim: In this paper, we address mixed criticality from a practical perspective. Our prime goal is to extend an OSEK-compliant real-time operating system (RTOS) with mixed criticality support, enabling such support in the automotive domain. In addition, we aim at a system (i) supporting more than two criticality levels; (ii) with minimal overhead upon an increase of the so-called criticality level indicator of the system; (iii) requiring no changes to an underlying operating system; and (iv) featuring further extensions, such as hierarchical scheduling and multi-core. Method: We used the so-called adaptive mixed criticality (AMC) scheme as a starting point for mixed criticality. We extended that scheme from two to more than two criticality levels (satisfying (i)) and complemented it with specified behavior for criticality level changes. We baptized our extended scheme AMC*. Rather than selecting a specific OSEK-compliant RTOS, we selected ExSched, an operating system independent external CPU scheduler framework for real-time systems, which requires no modifications to the original operating system source code (satisfying (iii)) and features further extensions (satisfying (iv))). Results: Although we managed to build a functional prototype of our system, our experience with ExSched made us decide to rebuild the system with a specific OSEK-compliant RTOS, being µC/OS-II. We also briefly report upon our experience with AMC* and suggest directions for improvements. Conclusions: Compared to extending ExSched with AMC*, extending µC/OS-II turned out to be straightforward. Although we now have a basic system operational and available for experimentation, enhancements of the AMC*-scheme are considered desirable before exploitation in a vehicle. Background: With an increase of the number of features in a vehicle, the computational requirements also increase, and vehicles may contain up to 100 Electronic Control Units (ECUs) to accommodate these requirements. For cost-effectiveness reasons, amongst others, it is considered desirable to limit the growth of, or preferably reduce, the number of ECUs. To that end, mixed criticality is a promising approach that received a lot of attention in the literature, primarily from a theoretical perspective. Aim: In this paper, we address mixed criticality from a practical perspective. Our prime goal is to extend an OSEK-compliant real-time operating system (RTOS) with mixed criticality support, enabling such support in the automotive domain. In addition, we aim at a system (i) supporting more than two criticality levels; (ii) with minimal overhead upon an increase of the so-called criticality level indicator of the system; (iii) requiring no changes to an underlying operating system; and (iv) featuring further extensions, such as hierarchical scheduling and multi-core. Method: We used the so-called adaptive mixed criticality (AMC) scheme as a starting point for mixed criticality. We extended that scheme from two to more than two criticality levels (satisfying (i)) and complemented it with specified behavior for criticality level changes. We baptized our extended scheme AMC*. Rather than selecting a specific OSEK-compliant RTOS, we selected ExSched, an operating system independent external CPU scheduler framework for real-time systems, which requires no modifications to the original operating system source code (satisfying (iii)) and features further extensions (satisfying (iv))). Results: Although we managed to build a functional prototype of our system, our experience with ExSched made us decide to rebuild the system with a specific OSEK-compliant RTOS, being µC/OS-II. We also briefly report upon our experience with AMC* and suggest directions for improvements. Conclusions: Compared to extending ExSched with AMC*, extending µC/OS-II turned out to be straightforward. Although we now have a basic system operational and available for experimentation, enhancements of the AMC*-scheme are considered desirable before exploitation in a vehicle.
Źródło:
e-Informatica Software Engineering Journal; 2018, 12, 1; 305-320
1897-7979
Pojawia się w:
e-Informatica Software Engineering Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Usability Analysis of a Novel Biometric Authentication Approach for Android-Based Mobile Devices
Autorzy:
Conti, V.
Collotta, M.
Pau, G.
Vitabile, S.
Powiązania:
https://bibliotekanauki.pl/articles/309359.pdf
Data publikacji:
2014
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Tematy:
fingerprints authentication
mobile device security
operating system
usability
Opis:
Mobile devices are widely replacing the standard personal computers thanks to their small size and userfriendly use. As a consequence, the amount of information, often confidential, exchanged through these devices is raising. This makes them potential targets of malicious network hackers. The use of simple passwords or PIN are not sufficient to provide a suitable security level for those applications requiring high protection levels on data and services. In this paper a biometric authentication system, as a running Android application, has been developed and implemented on a real mobile device. A system test on real users has been also carried out in order to evaluate the human-machine interaction quality, the recognition accuracy of the proposed technique, and the scheduling latency of the operating system and its degree of acceptance. Several measures, such as system usability, users satisfaction, and tolerable speed for identification, have been carried out in order to evaluate the performance of the proposed approach.
Źródło:
Journal of Telecommunications and Information Technology; 2014, 4; 34-43
1509-4553
1899-8852
Pojawia się w:
Journal of Telecommunications and Information Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Operating characteristic curves in monitoring of strength in ready-mixed concrete
Autorzy:
Bajorek, G.
Kiernia-Hnat, M.
Skrzypczak, I.
Powiązania:
https://bibliotekanauki.pl/articles/2069480.pdf
Data publikacji:
2012
Wydawca:
Uniwersytet Morski w Gdyni. Polskie Towarzystwo Bezpieczeństwa i Niezawodności
Tematy:
quality
safety
operating-characteristic curve
concrete
compliance criteria
Opis:
Statistical conformity criteria for compressive strength of concrete are the matter debate. Statistical criteria can have prejudicial effects to quality and safety of construction. The paper is concerned with the application of operating-characteristic curves to the monitoring of compressive strength in ready-mixed concrete. In this paper the crude Monte Carlo simulation method has been applied to obtain OC-curves for different compound conformity criteria and normal distribution type of concrete strength.
Źródło:
Journal of Polish Safety and Reliability Association; 2012, 3, 2; 259--262
2084-5316
Pojawia się w:
Journal of Polish Safety and Reliability Association
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Corrosion mechanisms and their consequences for nuclear power Plants
Autorzy:
Berg, H.-P.
Powiązania:
https://bibliotekanauki.pl/articles/2069694.pdf
Data publikacji:
2009
Wydawca:
Uniwersytet Morski w Gdyni. Polskie Towarzystwo Bezpieczeństwa i Niezawodności
Tematy:
corrosion
corrosion types
operating experience
nuclear power plants
Opis:
It is well known that operational conditions in light water reactors strongly influence the corrosion processes. This paper gives an overview which types of corrosion are identified in operating practice based on the evaluation of events which are reported to the authorities in line with the German reporting criteria. It has been found that the main contributor is the stress corrosion cracking. Several examples of different corrosion mechanisms and their consequences are provided for PWR although a high standard of quality of structures, systems and components has been achieved. Recommendations have been given to check the plant specifications concerning the use of auxiliary materials or fluids during maintenance as well as to examine visually the outer surfaces of austenitic piping with regard to residua of adhesive or adhesive tapes within the framework of in-service inspections. However, events in the last two years shows that such problems cannot be totally avoided.
Źródło:
Journal of Polish Safety and Reliability Association; 2009, 1; 23--32
2084-5316
Pojawia się w:
Journal of Polish Safety and Reliability Association
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The operating preparations used in lubricating oils
Autorzy:
Młynarczak, A.
Powiązania:
https://bibliotekanauki.pl/articles/246366.pdf
Data publikacji:
2010
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
lubricating oils
operating preparations
boundary layer
tribological systems
Opis:
Lubricating oils are characterized by improving quality. It is obtained by additives which are the integral part of the lubricants. Nevertheless, in extreme hard working conditions of the tribological systems (high pressures, velocities and temperatures, temporary lubricating lack during starting) the machine elements are not secured enough. Consequently the idea to introduce the additional substance - operating preparation into tribological systems (with the lubricating oils) appeared a few years ago. Owing to that, the lubricating oils with better antiwear and antiseizure properties are obtained. The boundary layers created on cooperating elements surfaces are able to carry bigger load and also friction resistance and wear of these elements decrease. The paper presents literature review concerning the operating preparations used in lubricating oils. Different opinions about operating preparations functioning can be found in the professional literature - from harmfulness or weak effectiveness to good efficiency and big technical, economical and ecological meaning. In author's opinion, in extreme working conditions of tribological systems the operating preparations (especially the chemical interaction preparations) ensure additional and effective protection of machine elements. The functioning efficiency ofthe operating preparations is usually the highest in case of deteriorating technical condition of tribological system elements.
Źródło:
Journal of KONES; 2010, 17, 2; 351-356
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Maritime radio information systems
Autorzy:
Korcz, K.
Powiązania:
https://bibliotekanauki.pl/articles/246746.pdf
Data publikacji:
2017
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
communication systems
maritime safety communication
ships' operating communication
Opis:
The article presents and evaluates the technical and operational possibilities of the maritime radio communications systems to be used especially for the exchange of information between the land users and ships. The basic functional requirements and regulations for Global Maritime Distress and Safety System (GMDSS) referring to the maritime radio information systems, resulting from the provisions of the International Convention for the Safety of Life at Sea (SOLAS) and Radio Regulations have been described. The article presents the role of information systems in the shipping and GMDSS as well. A current status of the maritime radio communication systems responsible for the exchange of information between the land users and ships has been presented. Operational and technical characteristics of the maritime radio systems used for the exchange of safety information and ships’ operating information have been described. The analysis of the systems responsible for broadcasting to the vessels the Maritime Safety Information (MSI) has been made. In this context, the operation, methods and ranges of broadcast of the Maritime Safety Information by the NAVTEX system and Inmarsat SafetyNet system have been discussed. The analysis of the systems responsible for the ships’ operating communications has been made too. The article also outlines the future of maritime radio information systems. In this context, two projects currently being implemented in the framework of the International Maritime Organization (IMO) by the Sub-Committee on Navigation, Communications, Search, and Rescue (NCSR) have been presented. The first of these projects under the name of e-Navigation refers to the use of the latest information and communication technologies in shipping. The second one concerns the modernization of the GMDSS. It is expected that as the outcome of these project works, among others, new maritime radio information systems presented here will be adopted.
Źródło:
Journal of KONES; 2017, 24, 3; 127-134
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The impact of operating parameters of tractors engine on exhaust emissions
Autorzy:
Merkisz, J.
Pielecha, J.
Jasiński, R.
Powiązania:
https://bibliotekanauki.pl/articles/243291.pdf
Data publikacji:
2016
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
Non-Road Mobile Machinery
exhaust emission
operating parameters
Opis:
At the beginning of the twenty-first century, one of the major challenges of humanity was to reduce the negative effects of civilization development. Besides the engines used in road vehicles there is a large group of engines for non-road applications. This group includes motor propelled vehicles not used on the road NRMM (Non-Road Mobile Machinery). Engines of these vehicles, among all of the non-road applications, are characterized by very specific working conditions that do not allow them to be qualified for propulsion engines. The main problem with these vehicles is the particulate matter and nitrogen oxides emission. The paper presents an analysis of the operating parameters of an engine and exhaust emissions of a tractor operating on a chassis dynamometer. Studies of the tractor involved measurements of engine operating parameters and the concentration of harmful substances in the exhaust gases. Information about the parameters of the engine and the intensity of emissions were obtained during the dynamometer test. The study included a comparative analysis of the operating parameters of the engine obtained from the diagnostic system and direct measurements on a chassis dynamometer and a correction of the torque obtained from the vehicle computer system was made. As a result, values of specific emission during engine tests under varying values of load were determined.
Źródło:
Journal of KONES; 2016, 23, 4; 339-350
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Research and analysis of operating characteristics of energetic biomass mikronizer
Badania i analiza eksploatacyjnych charakterystyk mikronizatora energetycznej biomasy
Autorzy:
Flizikowski, J.
Topoliński, T.
Opielak, M
Tomporowski, A.
Mroziński, A.
Powiązania:
https://bibliotekanauki.pl/articles/1365862.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Polskie Naukowo-Techniczne Towarzystwo Eksploatacyjne PAN
Tematy:
operating characteristics
biomass
grinding
charakterystyki eksploatacyjne
biomasa
rozdrabnianie
Opis:
The analysis covers interrelations between the following factors: the machine movement, states and transformations of particles of the micronized biomass, particle shifts, mixing, grinding of energetic straw and its particles. It has been found that these relationships, among other things, depend on friction conditions, impacts, cutting, structural components of the micronizer as the dynamic movement of the machine structural components and biomass (particles) takes place under the conditions of idle movement and workload in order to accomplish an external goal. This paper aims at systematization, calculation and complementary research on micro-grinding performance characteristics (idle and operating), for constant and different rotational speeds (angular and linear).
Poddano analizie wzajemne relacje: ruchu użytkowego, stany i przemiany cząstek rozdrabnianej biomasy, ich przemieszczenia, mieszanie, rozdrabnianie słomy energetycznej i jej cząstek. Wykazano, że zależą one m.in. od warunków tarcia, zderzeń, cięcia, cech konstrukcyjnych mikronizatora, przy czym dynamiczne przemieszczanie elementów (części) konstrukcji maszyny i biomasy (cząstek), następuje w warunkach ruchu jałowego i obciążenia roboczego, dynamicznej realizacji celu zewnętrznego. Celem pracy jest systematyzacja, obliczenia i badania uzupełniające charakterystyk użytkowych (jałowych i roboczych) mikro-rozdrabniania, sporządzanych przy stałej i różnej prędkości obrotowej (kątowej lub liniowej).
Źródło:
Eksploatacja i Niezawodność; 2015, 17, 1; 19-26
1507-2711
Pojawia się w:
Eksploatacja i Niezawodność
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Financing Risk of a Banks Operating Activities
Autorzy:
Cichy, Janusz
Powiązania:
https://bibliotekanauki.pl/articles/587660.pdf
Data publikacji:
2013
Wydawca:
Uniwersytet Ekonomiczny w Katowicach
Tematy:
Banki
Działalność operacyjna
Ryzyko
Banks
Operating activities
Risk
Opis:
Działalność operacyjna to podstawowy rodzaj działalności banku, której celem jest wygenerowanie zysku. Głównym centrum zysku są operacje aktywne, a ich realizowanie jest uwarunkowane posiadaniem kapitału w odpowiedniej wielkości. Wymusza to na bankach podejmowanie decyzji dotyczących finansowania ich działalności, biorąc pod uwagę koszty oraz ryzyko, które jest uzależnione od indywidualnych decyzji deponentów, a także niekorzystnych zmian makroekonomicznych mających wpływ na zachowanie rynków finansowych. Ryzyko finansowania wpływa na płynność banku, której odpowiedni poziom jest koniecznym, wymaganym przez KNF, warunkiem bezpiecznego jego funkcjonowania. Dlatego też bank powinien zarządzać nie tylko posiadanymi aktywami, ale także dostępnymi kapitałami w taki sposób, aby optymalizować ich strukturę pod względem wartości, rodzajów i terminów wymagalności. Artykuł ma na celu analizę źródeł finansowania banku z punktu widzenia ekonomicznych uwarunkowań ich wyboru, w kontekście minimalizacji ryzyka występującego przy jego finansowaniu.
Źródło:
Studia Ekonomiczne; 2013, 127; 153-163
2083-8611
Pojawia się w:
Studia Ekonomiczne
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Communication in the operating room
Autorzy:
Gulášová, Ivica
Breza ml., Ján
Breza, Ján
Powiązania:
https://bibliotekanauki.pl/articles/2134826.pdf
Data publikacji:
2013
Wydawca:
Instytut Studiów Międzynarodowych i Edukacji Humanum
Tematy:
Communication
operating room
surgery
general anesthesia
spinal anesthesia
Opis:
Operating room is now a place or a magical environment where the suture irreplaceable, quiet and reliable tour guide patients and surgeons. There was a perception that communication with patients in operating theaters is very limited, respectively, rare and used much less than the wards, intensive care units and clinics, but it is not so. Communication during surgical interventions, whether among staff or patients is always individual. This depends mainly on whether the interventions under general, spinal or local anesthesia . This is a rather important fact, because it is derived from a method of communication between members of the operating team and the operations team and the patient. Communication is an important aspect of nursing activities. That is reason why the autors of the report focus on the specificis of nursing care in the operating room. Work in this field pats high demands on the nurse as the site of a professional, as well, as psychologicae, physical and emotionae. Inclusion of nurses in this work provides the same personal characteristics and skills.
Źródło:
Humanum. Międzynarodowe Studia Społeczno-Humanistyczne; 2013, 2(11); 67-76
1898-8431
Pojawia się w:
Humanum. Międzynarodowe Studia Społeczno-Humanistyczne
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Modelowanie probabilistyczne widma obciążeń eksploatacyjnych w badaniach przyspieszonych obiektu
Probabilistic modelling of service load spectrum at accelerated testing of objects
Autorzy:
Wieciński, W.
Powiązania:
https://bibliotekanauki.pl/articles/236289.pdf
Data publikacji:
2010
Wydawca:
Wojskowy Instytut Techniczny Uzbrojenia
Tematy:
obciążenia eksploatacyjne
modelowanie probabilistyczne
operating loads
probabilistic modelling
Opis:
Treść artykułu prezentuje wypracowaną w WITU metodę modelowania, widma obciążeń w badaniach przyspieszonych na przykładzie rzeczywistego obiektu. Metodę oparto na koncepcji badania reakcji obiektu na widmo wymuszeń zamiast wymuszeń pojedynczych jego czynników. Istotnym nowum koncepcji było wyznaczenie widma wymuszeń na podstawie rozkładów parametrów widma z jakim występują w warunkach eksploatacji.
A modelling method developed in the Military Institute of Armament Technology for a spectrum of loads used at accelerated testing of a real object is presented in the paper. The method is based on a concept for testing the reaction of an object against the spectrum of loads instead than individual loads of its components. The essentially new approach is in the fact that the spectrum of excitations is determined on the base of spectrum characteristics corresponding to real conditions of operation.
Źródło:
Problemy Techniki Uzbrojenia; 2010, R. 39, z. 116; 57-65
1230-3801
Pojawia się w:
Problemy Techniki Uzbrojenia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Determination of operating characteristics of naval gas turbines LM2500
Autorzy:
Pojawa, B.
Hołdowska, M.
Powiązania:
https://bibliotekanauki.pl/articles/247166.pdf
Data publikacji:
2011
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
naval gas turbine
operating characteristics
power transmission system
Opis:
In the process of operation of naval gas turbine is necessary to know their parameters depending on their load, resulting from the swimming speed of the ship. The above equation is the operating characteristics. Classify them into: static (rotating, full-load, collaboration engine power with the receiver), dynamic (starting, acceleration and deceleration) and the universal. The paper presents the results of preliminary tests concern develop rotating characteristics an object of investigations work in the stationary states. The object of investigations was the main propulsion engines frigate type Oliver Hazard Perry which is supplied with the Polish Navy. The propulsion system consists of two naval gas turbine LM2500, reduction gear, shaft line and adjustable screw propeller. Preliminary tests were carried out during the departure of the ship to sea in a marine power plant. The measurements recorded in the engine load range from the minimum to the nominal used to develop characteristics. During the test engines have been simultaneous and the balanced load. In order to allow comparison of operating characteristics of engines tested, as well as references to the various weather conditions, the results of measurements on which it was set, brought to so-called "regulated by weather conditions". For these characteristics, using statistical analysis, were determined dependence of approximation. The received relationships can be used on need of technical diagnostics as well as the more far investigations of considered object of investigations.
Źródło:
Journal of KONES; 2011, 18, 4; 369-376
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis of the modern oil viscosity changes during their operation in combustion engines
Autorzy:
Młynarczak, A.
Sikora, G.
Powiązania:
https://bibliotekanauki.pl/articles/244975.pdf
Data publikacji:
2014
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
lubricating oil deterioration
viscosity
operating time
combustion engine
Opis:
During normal operation, oxidation products gradually foul lubricating oil and external contaminants like fuel, water, sulphur compounds and friction nodes wearing products. As a result, lubricating oil changes its properties, among other things viscosity. In normal service conditions of marine diesel engines lubricating oil viscosity increases due to vaporizing of lube oil light ends during operation in high-temperature areas and oxidation process. Quantity of organic particulates accumulated in lubricating oil increases as a result of oxidation process. Oxidation products have bigger than lubricating oil molecular weight. So as to prevent oxidation process-lubricating oils are provided with antioxidant additives. On the other hand mechanical breakdown of high molecular substances in diesel engine bearings and gas oil leakages cause lubricating oil viscosity drop. The test results presented in the paper show that the lubricating oil viscosity during its operation in the internal combustion engines decreases. The value of viscosity decrease depends mainly on the motor's technical condition, the amount of oil in lube oil system, mode of ignition and its operation. Viscosity tests were performed for the lubricating systems of different engines on a Haake III Mars rheometer at 90 C for variable shear rates. Additionally, in order to determine engine condition, the detail analysis of the tested oil chemical content has been made oil using Spectrol Q100 spectrometer. In the most cases, the research results indicate lubricating oils viscosity decrease and it is possible to determine the relationship between the dynamic viscosity changes and shear rates for the particular engines. In authors opinion the viscosity drop of the tested modern lubricating oils may be caused by better antioxidant additives, which effectively moderate or even prevent the oxidation process. Lubricating oils viscosity drop is dangerous phenomena due to the lowering of the bearings capacity force and possibility of boundary friction.
Źródło:
Journal of KONES; 2014, 21, 4; 361-368
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Identification of maritime ferry operation process including operating environment threats
Autorzy:
Kołowrocki, K.
Soszyńska-Budny, J.
Powiązania:
https://bibliotekanauki.pl/articles/2068968.pdf
Data publikacji:
2016
Wydawca:
Uniwersytet Morski w Gdyni. Polskie Towarzystwo Bezpieczeństwa i Niezawodności
Tematy:
shipping
critical infrastructure
operation process
operating environment threats
Opis:
In the paper, the traditional semi-Markov approach to a complex technical system operation process modeling is proposed to modelling a critical infrastructure operation process including operating environment threats. Next the model is applied to real critical infrastructures such as the maritime ferry technical system.
Źródło:
Journal of Polish Safety and Reliability Association; 2016, 7, 3; 113--130
2084-5316
Pojawia się w:
Journal of Polish Safety and Reliability Association
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Evaluation of relations operating and ecological parameters of turbine engines
Autorzy:
Markowski, J.
Pielecha, J.
Jasiński, R.
Wirkowski, P.
Ślusarz, G.
Powiązania:
https://bibliotekanauki.pl/articles/2073658.pdf
Data publikacji:
2015
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:
exhaust emissions
engine turbine
ecological parameters
operating parameters
Opis:
The article concerns the evaluation of exhaust emissions from turbine engines. The results of the work are associated with development of analytical methods useful in estimating the emissions of harmful exhaust gases during turbine engine operating conditions. The results of studies and the interdependence between emission indicators and operating parameters were pointed out. The analysis of these interdependence shows a strong similarity in the nature of changes of particular relationship in relation to the engines tested, but also shows their individuality. The article shows the direction of further work to develop methods of assessment the emissions from turbine engines during their operation. The methods developed for the analysis of ecological parameters during operation of turbine engines may be useful to implement in models of assessing pollutant emissions from maritime transport and to analyze and evaluate the impact of transport on the environment. This assessment may be important to consider, with regards to meeting the newly introduced emission standards, in accordance with the MARPOL directive, which has been in force since January of 2015.
Źródło:
Journal of Polish CIMEEAC; 2015, 10, 1; 101--115
1231-3998
Pojawia się w:
Journal of Polish CIMEEAC
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Rola i zadania pielęgniarki operacyjnej przy zabiegu pomostowania aortalno-wieńcowego
The role and tasks of the scrub nurse in the procedure of coronary artery by-pass surgery
Autorzy:
Kluszczyńska, Martyna
Powiązania:
https://bibliotekanauki.pl/articles/2119964.pdf
Data publikacji:
2018-09-28
Wydawca:
Europejskie Centrum Kształcenia Podyplomowego
Tematy:
blok operacyjny
pielęgniarka
by-pass
operating room
nurse
Opis:
Zabieg pomostowania aortalno-wieńcowego stanowi prawie 3/4 wszystkich zabiegów kardiochirurgicznych. Ta rozległa i skomplikowana operacja wymaga uczestnictwa wykwalifikowanego zespołu medycznego, którego niezbędną częścią są pielęgniarki instrumentariuszki. Posiadana przez nie wiedza teoretyczna i praktyczna oraz doświadczenie przyczyniają się do sprawnego przebiegu zabiegu. Do zadań pielęgniarki operacyjnej należy nie tylko instrumentowanie, ale również przygotowanie sali operacyjnej, narzędzi, kontrola sterylności materiałów, prowadzenie dokumentacji (przez pielęgniarkę pomagającą), wykonywanie opatrunków oraz odpowiednie postępowanie z narzędziami po zabiegu i oddanie ich do sterylizacji. Bardzo ważne jest również dbanie o bezpieczeństwo pacjenta, za które odpowiedzialni są wszyscy członkowie zespołu operacyjnego.
The coronary artery by-pass surgery accounts for almost 3/4 of all cardiosurgical procedures. This extensive and complicated operation requires the participation of a qualified medical team whose necessary part are nurse practitioners. Their theoretical and practical knowledge as well as experience contribute to the smooth operation of the procedure. The tasks of the scrub nurse include not only instrumentation, but also the preparation of the operating room, tools, control of sterility of materials, keeping documentation (by the nurse helping), dressing and proper handling of tools after surgery and putting them to sterilization. It is also very important to take care of the patient’s safety, for which all members of the operating team are responsible.
Źródło:
Współczesne Pielęgniarstwo i Ochrona Zdrowia; 2018, 7, 4; 93-96
2084-4212
Pojawia się w:
Współczesne Pielęgniarstwo i Ochrona Zdrowia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Powered roof support – rock strata interactions on the example of an automated coal plough system
Autorzy:
Herezy, Ł.
Janik, D.
Skrzypkowski, K.
Powiązania:
https://bibliotekanauki.pl/articles/178650.pdf
Data publikacji:
2018
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
rock strata
powered roof support
operating characteristics
monitoring
Opis:
The study summarises the operating characteristics of the powered roof support (shield) used in an automated plough system. Investigated longwall support units were controlled automatically or by section engineers and positioned in the 'saw tooth' configuration with respect to the longwall face (automatic mode) or linear to the face. Shield pressure data have been analysed in order to identify the impacts of particular factors on the pressure increase profiles. The analysis was supported by the Statistica software to determine the statistical significance of isolated factors. Equations governing the leg pressure at the given time instant were derived and the roof stability factor 'g' was obtained accordingly, recalling the maximal admissible roof displacement method recommended by the Central Mining Institute (Poland). In the current mining practice, its values are used in monitoring of strata behaviour as indicators of shield–strata interactions, particularly in the context of roof control in longwall mining. It is vital that the method used should be adapted to the actual conditions under which the longwall is operated. In the absence of such adaptations, there will be major discrepancies in results. The conclusions section summarises the current research problems addressed at the Department of Underground Mining, in which the support pressure data in longwall operations are used. The first aspect involves the delineation of deformations of a longwall main gate about 100 m ahead of the face. The second issue addressed involves the risk assessment of roof rock caving or rock sliding in the tail gate. Another aspect involves the standardisation of local conditions to support the methodology of interpreting shield–strata interactions in the context of work safety. These methods are being currently verified in situ.
Źródło:
Studia Geotechnica et Mechanica; 2018, 40, 1; 46-55
0137-6365
2083-831X
Pojawia się w:
Studia Geotechnica et Mechanica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Loss of profits occurring due to the halting of mining operations arising from occupational accidents or reasons related to legislation
Straty zysków powstałe w wyniku zatrzymania pracy górniczej wynikające z wypadków przy pracy lub z przyczyn wynikających z przepisów prawnych
Autorzy:
Yıldız, Taşkın Deniz
Powiązania:
https://bibliotekanauki.pl/articles/2069764.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Instytut Gospodarki Surowcami Mineralnymi i Energią PAN
Tematy:
occupational health and safety
operating cost
occupational accident
operating profit
bezpieczeństwo i higiena pracy
koszty operacyjne
wypadek przy pracy
działalność operacyjna
Opis:
In the event of occupational accidents in mining, investors can calculate approximately how much loss will be incurred at the time of the accident. However, in halting mining as a result of occupational accidents or legislation, investors, will perhaps not care about how much of a loss to profits will arise due to the resulting downtime of mining operations. The reason for this is that there is no such halting in mining operation as yet and mining activity is continued. Avoiding halting mines due to occupational accidents and legislation would enable the prevention of unexpected costs resulting from these time losses. The aim of this study was to find out how much the loss of profits resulting from the downtime of mining enterprises due to the aforementioned reasons are in total, and how much the ratio of loss of profits to annual operating costs is on average on an annual basis. To determine the loss of profits and to minimize the accidents in enterprises, permanent supervisors, who are assigned in the enterprises where they are working, were given a survey through the SurveyMonkey program. Of the 235 permanent supervisors who filled out the survey on behalf of the mining enterprises, 58 answered all of the multiple-choice questions examined in the study. These questions were analyzed together according to different mineral groups and differences in mining operation methods. As a result of the analysis, it was determined that the annual loss of profits of mining enterprises resulting from the aforementioned periods of downtime, and the ratio of these values to the annual operating costs constitute a rather significant share. The aim of the article was to raise awareness to have mining companies appropriate more funds for occupational health and safety.
W przypadku wypadku przy pracy w górnictwie inwestorzy górniczy mogą obliczyć, jaką w przybliżeniu poniosą stratę. Jednak w przypadku wstrzymania wydobycia wynikającego z wypadków przy pracy lub ustawodawstwa, inwestorzy być może nie będą dbać o to, jak bardzo wzrośnie strata zysku z powodu strat nieprzepracowanego czasu w górnictwie. Powodem jest to, że nie ma jeszcze obowiązkowego wstrzymania w działalności wydobywczej i w takim przypadku kontynuuje się działalność górniczą. Unikanie zatrzymywania kopalń z powodu wypadków przy pracy i przepisów pozwoli zapobiec nieoczekiwanym kosztom wynikającym z tych strat czasu. W publikacji postawiono sobie za cel ustalenie, na ile łącznie składają się straty zysku wynikające z nieprzepracowanych okresów działalności operacyjnej przedsiębiorstw górniczych wstrzymanych z tych przyczyn i ile wynosi średnioroczny stosunek strat zysku do rocznych kosztów eksploatacji. Aby określić te straty w zysku i zminimalizować wypadki w przedsiębiorstwach, przeprowadzono ankietę w ramach programu „SurveyMonkey” wśród osób stałego nadzoru pracującego tych w przedsiębiorstwach. Spośród 235 stałych nadzorców, którzy wypełniali ankietę w imieniu przedsiębiorstw górniczych, 58 odpowiedziało na wszystkie zadane w badaniu pytania wielokrotnego wyboru. Pytania te analizowano łącznie według różnych grup surowców mineralnych i różnic w metodach eksploatacji górnictwa. W wyniku przeprowadzonej analizy ustalono, że roczne straty zysku przedsiębiorstw górniczych wynikające z postojów oraz stosunek tych wartości do rocznych kosztów eksploatacji stanowią średnio znaczący udział. Tym samym w artykule podjęto próbę uświadomienia, że firmy górnicze przeznaczają więcej środków na bezpieczeństwo i higienę pracy.
Źródło:
Gospodarka Surowcami Mineralnymi; 2021, 37, 4; 153--176
0860-0953
Pojawia się w:
Gospodarka Surowcami Mineralnymi
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Working temperature calculation of single-core cable by nonlinear finite element method
Autorzy:
Meng, Xiaokai
Han, Peijie
Liu, Yongxin
Lu, Zhumao
Jin, Tao
Powiązania:
https://bibliotekanauki.pl/articles/141018.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
cable
finite element simulation model
thermal conductivity
operating temperature
Opis:
By simulating the actual working conditions of a cable, the temperature variation rule of different measuring points under different load currents was analyzed. On this basis, a three-dimensional finite element model (FEM) was established, and the difference and influence factors between the simulation temperature and the experimental measured value were discussed, then the influence of thermal conductivity on the operating temperature of the conductor layer was studied. Finally, combined with the steady-state thermal conductivity model and the experimental measured data, the relation between thermal conductivity and load current was obtained.
Źródło:
Archives of Electrical Engineering; 2019, 68, 3; 643-656
1427-4221
2300-2506
Pojawia się w:
Archives of Electrical Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Industrial collaborative robot Digital Twin integration and control using Robot Operating System
Autorzy:
Diachenko, Danyil
Partyshev, Andriy
Pizzagalli, Simone Luca
Bondarenko, Yevhen
Otto, Tauno
Kuts, Vladimir
Powiązania:
https://bibliotekanauki.pl/articles/2086272.pdf
Data publikacji:
2022
Wydawca:
Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych
Tematy:
digital twin
virtual reality
robot operating system
collaborative robot
Opis:
Standardized and universal solutions for industrial robot integration are increasingly urgent requirements for companies looking for machine interconnectivity, and flexibility in creating tailor made manufacturing systems. These solutions must be supported by modular and open-source components able to easily integrate new control methods and advanced Extended Reality (XR) interfaces. Robot Operating System (ROS) has proven to be a reliable standard for industrial robot integration. ROS compatibility software is provided by many producers and allows for the implementation of modular control units by unifying development practices along the same libraries and methods. Digital Twins (DT) of industrial equipment and processes offer a solid base to develop innovative digital tools relying on synchronization between physical and digital entities and to easily setup intuitive XR interfaces for teleoperation and programming. This work presents the integration of the OMRON TM5-9000 collaborative industrial robot into the IVAR laboratory DT system at Tallinn University of Technology. By using Unity3D game engine and developing a ROS package for the specific machine, the digital model of the collaborative robot is integrated into the existing twin. Synchronization with the real counterpart is provided by MQTT protocol while a robot user interface is developed in Unity and provides robot joints visualization and remote control.
Źródło:
Journal of Machine Engineering; 2022, 22, 2; 57--67
1895-7595
2391-8071
Pojawia się w:
Journal of Machine Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Podstawowe zagadnienia eksploatacji urządzeń elektrycznych w wykonaniu przeciwwybuchowym, a instrukcje obsługi i konserwacji urządzeń, instalacji i sieci elektroenergetycznych instalacji produkcyjnych - zakres branży elektrycznej; na przykładzie zakładu produkcyjnego PKN Orlen S.A. w Płocku
Basic maintenance isseus of electrical equipment in explosion-proof execution, in reference of operating and maintenance manuals of electrical equipment, installations and power supply systems of production plants - scope of electrical branch
Autorzy:
Kużaj, K.
Kolloch, J.
Rumiński, W.
Kubera, J.
Mościbroda, P.
Brześciński, W.
Brzózka, W.
Szczepanek, W.
Lelewski, P.
Powiązania:
https://bibliotekanauki.pl/articles/1369131.pdf
Data publikacji:
2012
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Napędów i Maszyn Elektrycznych Komel
Tematy:
eksploatacja urządzeń
wykonanie przeciwwybuchowe
explosion-proof execution
operating machines
Opis:
In refinery, petrochemical and chemical industry exceptionally important is maintenance process of electrical equipment in explosion-proof execution. The paper presents basic issues of electrical equipment In explosion-proof execution in respect of operating and maintenance manuals of electrical equipment, installations and power supply systems of production plants, taking into account e.g. experiences gained during implementation Directives of European Parliament and the Council particularly Directive 1999/92/EC related to minimum requirements for improving the safety and health protection of workers exposed potentially at explosive atmospheres risk, and their transposition into appropriate polish laws. This paper by focusing on operating and maintenance manuals bring closer some aspects of cooperation between production plant and power supply systems operator, production plant and operating entities, production plant and maintenance entities, production plant and overhaul entities. The paper background is created by implementation correlated polish law rules, technical standards issued by Polish Committee for Standardization on the way to develop modern approach to operating and maintenance process of electrical equipment in explosion-proof execution.
Źródło:
Maszyny Elektryczne: zeszyty problemowe; 2012, 1, 94; 159-164
0239-3646
2084-5618
Pojawia się w:
Maszyny Elektryczne: zeszyty problemowe
Dostawca treści:
Biblioteka Nauki
Artykuł
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