Skocz do pozycji: 1.

Tytuł:

Efektywność – rozważania nad istotą i typologią

Autorzy:

Kozuń-Cieślak, Grażyna

Powiązania:

https://bibliotekanauki.pl/articles/630355.pdf

Data publikacji:

2013

Wydawca:

Szkoła Główna Handlowa w Warszawie

Tematy:

typology of efficiency, static efficiency, dynamic efficiency, technical efficiency, allocative efficiency, X-efficiency.

Opis:

In today’s world the term efficiency gained a status of an imperative at all levels of economic activity (micro, mezo, macro) as well as in all sectors of the economy (private, public, non-profit). The prevalence of “efficiency” in scientific discussions discloses existence of a number of approaches to the understanding of this concept as well as existence of conceptual differences regarding the essence of efficiency, resulting from different ideological foundations of relevant economic theories. This study distinguishes between two analytical approaches: 1) static efficiency – conceptually inscribed in the paradigm of neoclassical economics, 2) dynamic efficiency – developed on the grounds of heterodox evolutionary economics. Within these two theoretical approaches various types of efficiency have been identified and characterized. This resulted in a typology that established a conceptual framework for clarifying different meanings of the term “efficiency”.

Źródło:

Kwartalnik Kolegium Ekonomiczno-Społecznego Studia i Prace; 2013, 4; 13-42
2082-0976

Pojawia się w:

Kwartalnik Kolegium Ekonomiczno-Społecznego Studia i Prace

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 2.

Tytuł:

Modelling the supply chain for the company and indicators for assessing the efficiency of its functioning

Autorzy:

Jacyna-Gołda, I.

Powiązania:

https://bibliotekanauki.pl/articles/244701.pdf

Data publikacji:

2016

Wydawca:

Instytut Techniczny Wojsk Lotniczych

Tematy:

efficiency
supply chain efficiency indicator
supply chain efficiency

Opis:

The article presents selected issues concerning the modelling of the supply chain in the evaluation of the efficiency of tasks realization. In the process of determination, efficiency of the functioning of the supply chain it is necessary to determine the components of both the effects and expenditures in quantitative terms. It is assumed that the effect resulting from action taken depends on the problem under consideration, for example, the result may be the amount of the profits, savings resulting from implemented solutions or measurable improvement of the quality system, expressed e.g. percentage. While the outlay incurred for the implementation of the action is, in general, the expense of implementing this action. The article pointed out that the assessment of the efficiency can be used to decide on the choice of a decision of the many variants of solutions to the problem. In this respect, important are indicators of the efficiency both the technical, economic, quality, and organizational. In the article were also presented possible approaches to improve the efficiency of the supply chain. In the problems of assessing efficiency of functioning of systems with a complex functional structure such as supply, chains increasingly are applicable algorithms based on the so-called heuristics. Hence, in the article briefly have been characterized also chosen heuristic algorithms – genetic algorithms.

Źródło:

Journal of KONES; 2016, 23, 3; 209-216
1231-4005
2354-0133

Pojawia się w:

Journal of KONES

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 3.

Tytuł:

Problems of Complex Evaluation of Production Process Efficiency

Autorzy:

Koliński, A.
Śliwczyński, B.

Powiązania:

https://bibliotekanauki.pl/articles/409538.pdf

Data publikacji:

2016

Wydawca:

Politechnika Poznańska. Wydawnictwo Politechniki Poznańskiej

Tematy:

production process efficiency
economic efficiency
operational efficiency
controlling

Opis:

Analysis of production process efficiency is an essential analytical tool of each enterprise. Focusing on market competitiveness, managers are forced to use increasingly detailed analysis of processes occurring in enterprise. Analysis of production process efficiency is not clearly defined in the scientific literature, making it difficult to correct use in business practice. In this article the authors present problems of properly define the production efficiency in the scientific literature and analyze problems of utilization of these methods in the research of economic practice.

Źródło:

Research in Logistics & Production; 2016, 6, 3; 231-244
2083-4942
2083-4950

Pojawia się w:

Research in Logistics & Production

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 4.

Tytuł:

Using the crooked fitness of organizations in managing the change

Autorzy:

Jasińska, Joanna
Stavnycha, Nataliia

Powiązania:

https://bibliotekanauki.pl/articles/1177312.pdf

Data publikacji:

2018

Wydawca:

Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN

Tematy:

change
efficiency
the efficiency curve

Opis:

The paper begins with the presentation of efficiency curve during the organizational change, and it’s determinants. It is emphasized, that change managers can influence on depth and time of endure the efficiency. On this background paper presents the actions which could diminish the costs of changes. They are divided into phases of change process.

Źródło:

World Scientific News; 2018, 104; 16-27
2392-2192

Pojawia się w:

World Scientific News

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 5.

Tytuł:

Efektywność jako wyznacznik gospodarowania. Kontekst ekonomiczno-społeczny
Efficiency as a determinant of management. The economic and social context

Autorzy:

Kwarcińska, A.

Powiązania:

https://bibliotekanauki.pl/articles/134566.pdf

Data publikacji:

2018

Wydawca:

Uniwersytet Szczeciński. Wydawnictwo Naukowe Uniwersytetu Szczecińskiego

Tematy:

efektywność
efektywność gospodarowania
efektywność ekonomiczna
efektywność społeczna
efficiency
management efficiency
economic efficiency
social efficiency

Opis:

Efektywność jest pojęciem często stosowanym i wielorako interpretowanym. Funkcjonuje w perspektywie różnych nauk. Powszechnie występujące dookreślenie efektywność ekonomiczna, sugerujące doprecyzowanie tego terminu, nie stanowi też gwarancji odnalezienia jednoznacznej definicji. Różne ujęcia problemów związanych z efektywnością gospodarowania generują potrzebę wielowymiarowego spojrzenia na tę kategorię, także w kontekście społecznym. Niniejsze opracowanie stanowi próbę zebrania i uporządkowania zróżnicowanej interpretacji efektywności ekonomicznej według studiów literatury przedmiotu, jak również zwrócenia uwagi na rosnące znaczenie i potrzebę równorzędnego traktowania niezwykle ważnej efektywności społecznej.
Efficiency is a frequently used and multi-interpreted concept. It functions in the perspective of various sciences. The economic effectiveness that is commonly mentioned, suggesting the clarification of this term, is also not a guarantee of finding an unambiguous definition. Different views of problems related to the effectiveness of management generate the need for a multidimensional view of this category, also in the social context. This study is an attempt to collect and organize a diversified interpretation of economic efficiency according to the literature on the subject, as well as to draw attention to the growing importance and need for equal treatment of extremely important social efficiency.

Źródło:

Problemy Transportu i Logistyki; 2018, 41, 1; 87-96
1644-275X
2353-3005

Pojawia się w:

Problemy Transportu i Logistyki

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 6.

Tytuł:

The Role of Economic Efficiency in Competition Law

Autorzy:

Jurczyk, Zbigniew

Powiązania:

https://bibliotekanauki.pl/articles/530221.pdf

Data publikacji:

2017-12-31

Wydawca:

Uniwersytet Warszawski. Wydawnictwo Naukowe Wydziału Zarządzania

Tematy:

dynamic efficiency
economic efficiency
efficient competition
innovations
static efficiency
tying

Opis:

The main focus of the paper is the function of economics in the current application of competition law. While advocating further economization of the law, it is seen as necessary to widen the extent to which aspects of economic efficiency encompassing static and dynamic efficiency are taken into consideration in an antitrust analysis. Much attention is devoted to these issues, while clarifying what is meant by them, how they are to be understood and implemented in the practice of antitrust authorities, as well as discussing their importance for the promotion of innovation. It is noted that accounting for the economic efficiency aspects differently in the light of competition law allows for the assessment of the market behavior of dominant companies, which traditionally has been seen as anticompetitive. This main issue of the paper is analyzed extensively and explained using the case of Microsoft, a company accused by the US and EU antitrust authorities of abusing its dominant position on the market of operating systems in that it integrated the sale of its base product Windows OS exclusively with other applications (Media Player and Internet Explorer). The differences presented in the research part of the paper as to the way Microsoft was treated by these authorities originated in their different methodology of analysis and assessment of the effects of the sales model launched by Microsoft for products offered to the PC manufacturers and their users, in spite of the US and EU antitrust authorities adopting the same evaluation standard – consumer welfare. Aspects of dynamic efficiency adequate in the assessment of the behavior of innovative firms holding a dominant position proved to be deciding. On the other side of the Atlantic, taking into account the aspects of dynamic efficiency was crucial in coming up with a lighter assessment of Microsoft’s tying compared to the European authorities’ assessment which was based largely on the structural analysis, where the benefits arising from dynamic efficiency are not visible. It is clear from the decisions made by the Commission that it favours regulation over effects generated by competition forces at a later time.

Źródło:

Yearbook of Antitrust and Regulatory Studies; 2017, 10(16); 107-126
1689-9024
2545-0115

Pojawia się w:

Yearbook of Antitrust and Regulatory Studies

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 7.

Tytuł:

Problem efektywności banków w literaturze przedmiotu

Autorzy:

Kubiszewska, Katarzyna

Powiązania:

https://bibliotekanauki.pl/articles/630360.pdf

Data publikacji:

2015

Wydawca:

Szkoła Główna Handlowa w Warszawie

Tematy:

efficiency, banking sector, efficiency during transformation

Opis:

The purpose of this article is to analyze the literature related to the problem ofbank effectiveness. The article is divided into three parts. The first one is devotedto the various concepts of effectiveness. The second part discusses the methodsand tools used to measure the level of efficiency of a banking market. The thirdpart presents results of selected studies on this issue, with a special emphasis onthe banking sectors of economies during systematic transformation.

Źródło:

Kwartalnik Kolegium Ekonomiczno-Społecznego Studia i Prace; 2015, 3, 2; 65-79
2082-0976

Pojawia się w:

Kwartalnik Kolegium Ekonomiczno-Społecznego Studia i Prace

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 8.

Tytuł:

Technical efficiency and the methods of its measurement
Efektywność techniczna i metody jej pomiaru

Autorzy:

Kulik, Justyna

Powiązania:

https://bibliotekanauki.pl/articles/425209.pdf

Data publikacji:

2017

Wydawca:

Wydawnictwo Uniwersytetu Ekonomicznego we Wrocławiu

Tematy:

efficiency
technical efficiency
measurement
methods
DEA

Opis:

The main purpose of this publication was to try systemizing the efficiency per-formance with particular regard to technical efficiency and measurement methods, and to identify the problems in defining and measuring the existing problems. The paper presents definitions of efficiency by selected authors, the classification and characterization of vari-ous types of efficiency made with particular emphasis on technical efficiency, and the basic methods for testing the effectiveness of the division on the indicator parametric and para-metric detailing the different measurement methods. A detailed analysis of the non-parametric methods for testing the effectiveness of technical support is the DEA (Data En-velopment Analysis) method presented with the example of the procedure for calculation of relative efficiency. The study identifies various modifications of the DEA method and also signalled areas where this method can be used to measure the effectiveness of specific enti-ties. The main research method used in the present study was to review and analyze the lit-erature on the subject topic.

Źródło:

Econometrics. Ekonometria. Advances in Applied Data Analytics; 2017, 3 (57); 72-87
1507-3866

Pojawia się w:

Econometrics. Ekonometria. Advances in Applied Data Analytics

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 9.

Tytuł:

WORK EFFICIENCY. AN ATTEMPT AT ORDERING THE CONCEPT (Efektywnosc pracy - próba uporzadkowania pojecia)

Autorzy:

Skowron-Mielnik, Beata

Powiązania:

https://bibliotekanauki.pl/articles/599260.pdf

Data publikacji:

2009-02-15

Wydawca:

Instytut Pracy i Spraw Socjalnych

Tematy:

WORK EFFICIENCY (DEFINITION & CLASSIFICATION)
WORK EFFICIENCY - SOCIAL ASPECTS
WORK EFFICIENCY'S CONSEQUENCES

Opis:

The aim of this article is to present terminological concerns connected with work efficiency as well as to attempt to define the issue. It is intended to serve as a clarification in the discussion on the practical aspects of work efficiency, including work outcome measurement and high work efficiency systems. Three issues are of prime importance in discussions on work efficiency: What are work outcomes and inputs? How can work efficiency be defined and evaluated? What factors influence the level of work efficiency? Another important question is how to include the social aspects of work efficiency and their consequences on assessing it.

Źródło:

Zarządzanie Zasobami Ludzkimi; 2009, 1(66) Dokąd zmierzają przedsiębiorstwa w dobie globalizacji i kryzysu finansowego?; 31-44
1641-0874

Pojawia się w:

Zarządzanie Zasobami Ludzkimi

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 10.

Tytuł:

Economic efficiency analysis of small-scale tomato farmers in Greater Letaba Municipality

Autorzy:

Nakana, Tshegofatso Morgan
Hlongwane, Johannes Jan
Belete, Abenet

Powiązania:

https://bibliotekanauki.pl/articles/2033370.pdf

Data publikacji:

2021-12-28

Wydawca:

Uniwersytet Przyrodniczy w Poznaniu. Wydawnictwo Uczelniane

Tematy:

economic efficiency
technical efficiency
allocative efficiency
tomato
and small-scale farm

Opis:

This paper analysed the economic efficiency of small-scale tomato farmers in the Greater Letaba municipality of South Africa’s Limpopo Province. Primary data were collected from 68 tomato farmers based on structured questionnaires and using convenience and purposive sampling procedures. The Cobb-Douglas production function was used to analyse the level of economic efficiency. The study utilised the output approach, where the output achieved by the farmers is compared to the maximum output attainable using the given inputs. The empirical results reveal that mean technical, allocative, and economic efficiency levels are at 0.95, 0.41 and 0.39, respectively. The study also found that land (farm size), seedlings, labour, pesticides and water have a positively significant relationship with the production of tomatoes in the study area. Therefore, it is recommended that the Department of Agriculture, Land Reform and Rural Development provide farmers with enough extension services by employing more extension personnel. Government programmes such as the Comprehensive Agricultural Support Programme should be intensified – through the pillar of training and capacity building – to reach the small-scale farmers in the municipality, whereby farmers should be provided with training on the recommended minimum and maximum application of inputs like pesticides, fertilisers, seedlings and water in tomato production.

Źródło:

Journal of Agribusiness and Rural Development; 2021, 62, 4; 429-434
1899-5241

Pojawia się w:

Journal of Agribusiness and Rural Development

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 11.

Tytuł:

The energy - efficient two - phase driving cycle (eta n greather than 1) can efficiency eta n in vehicles be higher than 1.0 ?

Autorzy:

Ubysz, A.

Powiązania:

https://bibliotekanauki.pl/articles/242928.pdf

Data publikacji:

2012

Wydawca:

Instytut Techniczny Wojsk Lotniczych

Tematy:

efficiency
driving cycle
overall engine efficiency

Opis:

The study presents an important part of fourth chapter of the monograph 'Energy Consumption in Relation to Fuel Efficiency Under Complex Driving Conditions' (2003) concerning opportunities to improve vehicle drive efficiency through application, during one phase of driving in neutral in two-phase driving cycle. Theoretical simulation of total energy consumption in vehicles with SI engine provided explanation of a relatively low fuel efficiency observed under real driving conditions in serial cars [1]. The study cites the original method of calculations developed by the author in order to calculate the efficiency of vehicle power unit in two-phase driving cycle assuming that one of the phases might be non-driving. The calculations were made for complex driving conditions, i.e. simulated changes with predefined steps for road slope (-3.5o to 3.5o), acceleration (-0.36-0.36 m/s2) and average speed (60-140 kmph) for a distance of 2x500 m. The results of calculation variants for each type of a drive system of a car proved that there are significant limitations of optimising the fuel consumption of cars. The first one is conditioned by the fact that the engine works at full dynamic load and the second one by the fact that idle running is against the 'Highway Code'.

Źródło:

Journal of KONES; 2012, 19, 4; 633-642
1231-4005
2354-0133

Pojawia się w:

Journal of KONES

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 12.

Tytuł:

Eco-Efficiency in Creating the Ecological Safety
Rola eko-wydajności w zakresie kształtowania bezpieczeństwa ekologicznego

Autorzy:

Szyja, Paulina

Powiązania:

https://bibliotekanauki.pl/articles/529851.pdf

Data publikacji:

2015

Wydawca:

Wyższa Szkoła Bankowa we Wrocławiu

Tematy:

environment
efficiency
eco-efficiency
ecological safety
mankind

Opis:

The issue of eco-efficiency is associated with actions aimed at increasing the productivity of raw materials, natural resources and energy savings in production and at the same time offering environmentally friendly products and services. This kind of action is beneficial to businesses and the environment, as well as the society. By reducing the pressure on the environment, caused by production processes, consumption and investment, it is possible to reduce impact of anthropological risks and simultaneously ensuring ecological safety. This article addresses the explanation of the possible connection of eco-efficiency and ecological safety. Considerations include the issue of terminology, as well as key elements of both concepts. The main thesis is: creating solutions for ecoefficiency is associated with ecological safety.

Źródło:

Central and Eastern European Journal of Management and Economics (CEEJME); 2015, 3; 201-216
2353-9119

Pojawia się w:

Central and Eastern European Journal of Management and Economics (CEEJME)

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 13.

Tytuł:

The work efficiency management (as a) – determinant of the development of modern organizations

Autorzy:

Szejniuk, Aleksandra

Powiązania:

https://bibliotekanauki.pl/articles/451715.pdf

Data publikacji:

2019

Wydawca:

Wyższa Szkoła Gospodarki Euroregionalnej im. Alcide De Gasperi w Józefowie

Tematy:

work efficiency
competencies
coaching
strategy
efficiency management

Opis:

Today’s enterprises, regardless of their size, have to face many new challenges. These include globalization, the use of new technologies and the creation of intellectual capital as a source of the competitive advantage. And moreover the need to act in a changing environment. The organizations must be characterized by a speed of action, flexibility and the ability to learn quickly. They should have employees with high competences who can effectively manage work. The work efficiency management is a business management subsystem. The implementation of this system should take into account not only the material potential, but above all the people. It has a decisive impact on the company’s competitiveness in the market. It allows you to achieve a success. Lawyers are a flexible and dynamic resource that is able to quickly respond to any changes in the company’s strategic goals. Currently, the human resources in the organization are treated as the most precious and the most expensive way. The idea of managing work efficiency is to strive to make the best use of human resources by constantly shaping the engagement and inspiration of people for effective actions for the benefit of the enterprise. A comprehensive approach to work efficiency management is an invaluable tool in building a competitive advantage.

Źródło:

Journal of Modern Science; 2019, 40, 1; 285-303
1734-2031

Pojawia się w:

Journal of Modern Science

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 14.

Tytuł:

Unboxing the black box on the dimensions of social globalisation and the efficiency of microfinance institutions in Asia

Autorzy:

Hussain, Hafezali Iqbal
Szczepańska-Woszczyna, Katarzyna
Kamarudin, Fakarudin
Anwar, Nazratul Aina Mohamad
Saudi, Mohd Haizam Mohd

Powiązania:

https://bibliotekanauki.pl/articles/19233712.pdf

Data publikacji:

2021

Wydawca:

Instytut Badań Gospodarczych

Tematy:

microfinance institutions
social globalisation
social efficiency
financial efficiency

Opis:

Research background: Microfinance institutions (MFIs) play an important role in alleviating poverty. Thus, MFIs should be efficient in order to ensure that their objectives on social welfare and financial performance can be achieved by identifying the potential determinants, specifically on social globalisation. Purpose of the article: This paper examines the impacts of the social globalisation dimensions of interpersonal, informational, and cultural globalisations on the financial and social efficiency of MFIs. Methods: The data period covered the years 2011-2018; the data set consists of 176 MFIs from six Asian countries. The Data Envelopment Analysis (DEA) approach was employed to examine the MFIs' efficiency levels. Generalised Least Square (GLS) regressions were used to analyse the impacts of social globalisation and other determinants towards the efficiency of MFIs. Findings and value added: Interpersonal globalisation had a significantly negative correlation with social efficiency, suggesting that increasing the number of foreigners in management intrudes on local managers' decisions. Informational globalisation had a significantly positive correlation with financial and social efficiency, which signifies that more information produces monopolistic profits in this industry. Finally, cultural globalisation had a positive correlation with social efficiency, demonstrating that a global trading culture improves the abilities and technological skills for labour development and enhances MFIs? social efficiency. In general, the Cobb Douglas Production theory explained the understanding of the impacts social globalisation has on MFI efficiency. Furthermore, the findings from this study could provide important scientific, practical gap and contribute new insights and implications to various parties. Firstly, governments or policymakers can establish effective national policies and strategies. Secondly, this study could support investors in monitoring and understanding the performance of MFIs. Finally, the research could fill scholarly gaps and uncover more potential factors that influence the efficiency of MFIs.

Źródło:

Oeconomia Copernicana; 2021, 12, 3; 557-592
2083-1277

Pojawia się w:

Oeconomia Copernicana

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 15.

Tytuł:

Improved Water-Filling Power Allocation for Energy-Efficient Massive MIMO Downlink Transmissions

Autorzy:

Noor Shahida, M. K.
Nordin, R.
Insmail, M.

Powiązania:

https://bibliotekanauki.pl/articles/227000.pdf

Data publikacji:

2017

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

energy efficiency
Massive MIMO
power allocation
spectral efficiency

Opis:

Energy Efficiency (EE) is becoming increasingly important for wireless communications and has caught more attention due to steadily rising energy costs and environmental concerns. Recently, a new network architecture known as Massive Multiple-Input Multiple-Output (MIMO) has been proposed with the remarkable potential to achieve huge gains in EE with simple linear processing. In this paper, a power allocation algorithm is proposed for EE to achieve the optimal EE in Massive MIMO. Based on the simplified expression, we develop a new algorithm to compute the optimal power allocation algorithm and it has been compared with the existing scheme from the previous literature. An improved water filling algorithm is proposed and embedded in the power allocation algorithm to maximize EE and Spectral Efficiency (SE). The numerical analysis of the simulation results indicates an improvement of 40% in EE and 50% in SE at the downlink transmission, compared to the other existing schemes. Furthermore, the results revealed that SE does not influence the EE enhancement after using the proposed algorithm as the number of Massive MIMO antenna at the Base Station (BS) increases.

Źródło:

International Journal of Electronics and Telecommunications; 2017, 63, 1; 79-84
2300-1933

Pojawia się w:

International Journal of Electronics and Telecommunications

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 16.

Tytuł:

Efficiency issues in Poland’s Research Institutes
Problematyka efektywności instytutów badawczych w Polsce

Autorzy:

Doński, Andrzej

Powiązania:

https://bibliotekanauki.pl/articles/28762945.pdf

Data publikacji:

2023

Wydawca:

Akademia Finansów i Biznesu Vistula

Tematy:

efficiency
efficiency analysis
efficiency categories
research institutes
efektywność
analiza efektywności
kategorie efektywności
instytuty badawcze

Opis:

The article aimed to specify the complexity of assessing the management’s efficiency of research institutes in Poland, in the context of the implementation of tasks resulting from their principal and ancillary activities, as well as other assignments commissioned by public administration authorities. The author attempted to clarify the concept of efficiency by reviewing the subject literature, to find a standard unit to assess research institutes’ activities in terms of efficiency. The analysis carried out based on a literature review, taking into account the complexity of duties of the research institutes, showed that there was no ultimate typology of efficiency, as research establishments have been set up to carry out a broad range of tasks of an economic, social and scientific nature. For that reason, efficiency can be only assessed against the priority, principal, and commissioned tasks implemented by each institute.
Celem rozważań jest przybliżenie złożoności pomiaru efektywności zarządzania instytutów badawczych w Polsce w aspekcie realizacji zadań wynikających z działalności podstawowej, pomocniczej, jak również innych zadań zleconych przez organy administracji publicznej. Autor przybliża pojęcie efektywności dokonując przeglądu literatury łącząc to z próbą znalezienia wybranej jednostki pomiaru efektywności działalności instytutów badawczych. W wyniku analizy literatury oraz złożoności zadań realizowanych przez instytuty badawcze, autor wnioskuje, że nie ma jednoznacznej typologii efektywności, bowiem jednostki są powoływane w celu realizacji różnorodnych zadań o charakterze ekonomicznym, społecznym oraz naukowym. Tym samym efektywność każdego instytutu może być oceniana przez pryzmat priorytetowych oraz podstawowych i zleconych zadań.

Źródło:

Społeczeństwo i Polityka; 2023, 2(75); 13-33
1733-8050

Pojawia się w:

Społeczeństwo i Polityka

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 17.

Tytuł:

A new approach in separation process evaluation. Efficiency ratio and upgrading curves

Autorzy:

Irannajad, M.
Nuri, O. S.
Allahkarami, E.

Powiązania:

https://bibliotekanauki.pl/articles/110189.pdf

Data publikacji:

2018

Wydawca:

Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej

Tematy:

separation efficiency
mineral processing
selectivity index
process evaluation
efficiency ratio
operation efficiency
Separation Process

Opis:

In mineral processing separation efficiency (SE), operation efficiency (OE), selectivity index (SI) and other indices have been used to evaluate the separation process. Up to now, no study has been conducted on the relationship between the SE, OE and SI indices. In this research, two upgrading curves are proposed based on the above indices for process and selectivity evaluation. The first upgrading curve is based on recovery R, SE, and OE as a function of concentrate grade. This curve has three background lines, including no upgrading line, ideal upgrading line and the ideal mixing line. The proposed upgrading curve is applicable not only for process evaluation by specification of OE and SE, but also for selectivity evaluation with the lowest difference between SE and OE. The curve showed that the recovery value is always greater than the SE and OE values. The parameters of OE, SE and R were used for plotting the upgrading curve as a function of concentrate grade taking into consideration all of them at a time. A new selectivity indicator, namely Efficiency Ratio (ER) as the selectivity parameter, is proposed as the ratio of OE to SE. The ER values fluctuate between 1 and . It can be presented as a function of concentrate and tailing grades (ER = [c(1-t)]/[1(c-t)]). The results showed that ER is insensitive to the feed grade and has the inverse relationship with SI. To measure the separation selectivity, another upgrading curve is proposed based on ER and SI parameters. This curve is divided into seven separation classes for evaluation the class of a separation process from ideal class to no separation one. The results of this research can be useful for separation process evaluation.

Źródło:

Physicochemical Problems of Mineral Processing; 2018, 54, 3; 847-857
1643-1049
2084-4735

Pojawia się w:

Physicochemical Problems of Mineral Processing

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 18.

Tytuł:

Verification of the modified AGT method applied to determining efficiency of squirrel-cage induction motor

Autorzy:

Figura, R.
Szychta, L.
Kwiecień, R.

Powiązania:

https://bibliotekanauki.pl/articles/141240.pdf

Data publikacji:

2012

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

metoda AGT
sprawność silnika
szacowanie wydajności
AGT method
motor efficiency
motor efficiency testing
efficiency estimating

Opis:

The modified air gap torque method to determine the efficiency of squirrelcage induction motor was presented. of testing which continues the authors' work on application of AGT method to estimating induction motor's efficiency are discussed. The proposed method is verified in a number of selected low-power motors.

Źródło:

Archives of Electrical Engineering; 2012, 61, 3; 315-323
1427-4221
2300-2506

Pojawia się w:

Archives of Electrical Engineering

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 19.

Tytuł:

Increasing photovoltaic panel power through water cooling technique

Autorzy:

Matias, C. A.
Santos, L. M.
Alves, A. J.
Calixto, W. P.

Powiązania:

https://bibliotekanauki.pl/articles/136175.pdf

Data publikacji:

2017

Wydawca:

EEEIC International Barbara Leonowicz Szabłowska

Tematy:

photovoltaic panel
water cooling
increasing electrical efficiency
efficiency increase

Opis:

This paper presents the development of a cooling apparatus using water in a commercial photovoltaic panel in order to analyze the increased efficiency through decreased operating temperature. The system enables the application of reuse water flow, at ambient temperature, on the front surface of PV panel and is composed of an inclined plane support, a perforated aluminum profile and a water gutter. A luminaire was specially developed to simulate the solar radiation over the module under test in a closed room, free from the influence of external climatic conditions, to carry out the repetition of the experiment in controlled situations. The first case study was published at EEEIC2016 conference where the panel was submitted to different rates of water flow, from 1 L/min to 4 L/min. In the test conditions without cooling apparatus, the panel reached about 70°C and produced approximately 63Wh. With the cooling apparatus with water flow rate of 2 L/min, the module reached about 50°C and produced approximately 77Wh. However, it has been observed that this water flow was overestimated. A second case study was carried out in order to perform the threshold between the flow and the energy produced. The best ratio was flow of 0.6 L/min and net energy of 77.41Wh. Gain of 22.69% compared to the panel without the cooling system. The best water flow rate was of 0.6 L/min and net energy of 77.41Wh. Gain of 22.69% compared to the panel without the cooling system.

Źródło:

Transactions on Environment and Electrical Engineering; 2017, 2, 1; 60-66
2450-5730

Pojawia się w:

Transactions on Environment and Electrical Engineering

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 20.

Tytuł:

Trend analysis of the productivity of Nigerian seaports

Autorzy:

Nze, Obiageli N.
Okeudo, Geraldine N.
Ejem, Ejem Agwu

Powiązania:

https://bibliotekanauki.pl/articles/2141170.pdf

Data publikacji:

2021

Wydawca:

Fundacja Centrum Badań Socjologicznych

Tematy:

trend analysis
productivity
seaports
concessioning
technical efficiency
scale efficiency

Opis:

This paper assessed the trend of productivity of the existing six Nigerian ports. Secondary data was extracted from National Bureau of Statistics (NBS) Annual Reports, Nigeria Port Authority (NPA) Annual Reports, and Central Bank of Nigeria (CBN) Annual reports. Using the Data Envelopment Analysis technique, it was discovered that Calabar Port had been under-utilized towards the achievement of the required results. On the contrary, Rivers Port requires technical touches in her operations. As a liquid bulk port, the time of loading and discharging of commodities are often more than any other type of port and the turnaround time at this port are often more. Scale optimization is also required in Rivers Port. Inferentially, Lagos Port has been operating on optimal scale size but fluctuating managerial efficiency was experienced in the operation years. As a matter of findings, Tin Can Island has a similar trend to that of Onne Port with low productivities in the pre-concession period which improved consistently in the post-concession year of 2010 till the year 2015. It was also observed that Tin Can Island Port operated on under-utilization of inputs resources in the pre-concession periods till the post-concession year 2010. This reflects the element of wastefulness concerning both inputs and outputs quantities. Delta Port experienced fluctuating scale and technical efficiency trends in both pre and post concession years. Hence, it is observed that productivities' trends vary among the concessioned Nigerian Ports. These could be as a result of the influence of varied exogenous and endogenous factors on individual Port.

Źródło:

Journal of Sustainable Development of Transport and Logistics; 2021, 6, 2; 81-95
2520-2979

Pojawia się w:

Journal of Sustainable Development of Transport and Logistics

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 21.

Tytuł:

Throughput, Spectral, and Energy Efficiency of 5G Massive MIMO Applications Using Different Linear Precoding Schemes

Autorzy:

Salah, Ibrahim
Rahouma, Kamel Hussein
Hussein, Aziza I.
Mabrook, M. Mourad

Powiązania:

https://bibliotekanauki.pl/articles/2203002.pdf

Data publikacji:

2023

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

throughput
massive MIMO
spectral efficiency
energy efficiency
trade-off

Opis:

On fifth-generation wireless networks, a potential massive MIMO system is used to meet the ever-increasing request for high-traffic data rates, high-resolution streaming media, and cognitive communication. In order to boost the trade-off between energy efficiency (EE), spectral efficiency (SE), and throughput in wireless 5G networks, massive MIMO systems are essential. This paper proposes a strategy for EE 5G optimization utilizing massive MIMO technology. The massive MIMO system architecture would enhance the trade-off between throughput and EE at the optimum number of working antennas. Moreover, the EE-SE tradeoff is adjusted for downlink and uplink massive MIMO systems employing linear precoding techniques such as Multiple -Minimum Mean Square Error (M-MMSE), Regularized Zero Forcing (RZF), Zero Forcing (ZF), and Maximum Ratio (MR). Throughput is increased by adding more antennas at the optimum EE, according to the analysis of simulation findings. Next, utilizing M MMSE instead of RZF and ZF, the suggested trading strategy is enhanced and optimized. The results indicate that M-MMSE provides the best tradeoff between EE and throughput at the determined optimal ratio between active antennas and active users equipment’s (UE).

Źródło:

International Journal of Electronics and Telecommunications; 2023, 69, 1; 185--191
2300-1933

Pojawia się w:

International Journal of Electronics and Telecommunications

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 22.

Tytuł:

A new family of robust regression estimators utilizing robust regression tools and supplementary attributes

Autorzy:

Sajjad, Irsa
Hanif, Muhammad
Koyuncu, Nursel
Shahzad, Usman
Al-Noor, Nadia H.

Powiązania:

https://bibliotekanauki.pl/articles/1363609.pdf

Data publikacji:

2021-03-03

Wydawca:

Główny Urząd Statystyczny

Tematy:

percentage relative efficiency

Opis:

Zaman and Bulut (2018a) developed a class of estimators for a population mean utilising LMS robust regression and supplementary attributes. In this paper, a family of estimators is proposed, based on the adaptation of the estimators presented by Zaman (2019), followed by the introduction of a new family of regression-type estimators utilising robust regression tools (LAD, H-M, LMS, H-MM, Hampel-M, Tukey-M, LTS) and supplementary attributes. The mean square error expressions of the adapted and proposed families are determined through a general formula. The study demonstrates that the adapted class of the Zaman (2019) estimators is in every case more proficient than that of Zaman and Bulut (2018a). In addition, the proposed robust regression estimators based on robust regression tools and supplementary attributes are more efficient than those of Zaman and Bulut (2018a) and Zaman (2019).The theoretical findings are supported by real-life examples.

Źródło:

Statistics in Transition new series; 2021, 22, 1; 207-216
1234-7655

Pojawia się w:

Statistics in Transition new series

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 23.

Tytuł:

Socio-Economic Effects of Education in the Context of Economic Return

Autorzy:

Hronec, Stefan
Štrangfeldová, Jana

Powiązania:

https://bibliotekanauki.pl/articles/26179128.pdf

Data publikacji:

2013-06-30

Wydawca:

Wydawnictwo Adam Marszałek

Tematy:

education
effects
efficiency

Opis:

The article presents the issue of evaluation of economic and non-economic effects of education. We proceed from the basic educational terminology and methods for the evaluation of efficiency of education that may be used in this connection. We compare individual methods in terms of their advantages and disadvantages. In our methodology, we applied the selected methods used in evaluation of investments in the private sector to the environment of the public sector and the field of education. We applied the procedures elaborated in the analytical part of the methodological part to particular values, indicators and the environment of higher education institutions. The analytical part presents evaluation of individual efficiency of investments in all three degrees of higher education, as well as in education in branches of studies at higher education institutions.

Źródło:

The New Educational Review; 2013, 32; 172-183
1732-6729

Pojawia się w:

The New Educational Review

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 24.

Tytuł:

The ethical and praxeological conceptions of an act and its evaluation

Autorzy:

Podrez, Ewa

Powiązania:

https://bibliotekanauki.pl/articles/652704.pdf

Data publikacji:

2017

Wydawca:

Uniwersytet Łódzki. Wydawnictwo Uniwersytetu Łódzkiego

Tematy:

goodness
rightness
efficiency

Opis:

The conception of an act and its evaluation constitute the most interesting and important moral subject which consists of a complex set of theoretical and practical issues. The article includes St. Thomas’ conception of the definition of the goodness of an act, Tatarkiewicz’s theory of rightness of an act as a source of its evaluation as well as Kotarbinski’s considerations which deal with the analysis of an act from an efficiency perspective. They have all contributed to the definitione of an act in its several variants and provided the possibility of classification of evaluation of an act on the ethical and praxeological plane.

Źródło:

Annales. Etyka w Życiu Gospodarczym; 2017, 20, 7; 39-49
1899-2226
2353-4869

Pojawia się w:

Annales. Etyka w Życiu Gospodarczym

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 25.

Tytuł:

Kategoria efektywności wobec współczesnych wymagań definicji i pomiaru
Category of Efficiency to Contemporary Definitions and Measurement Requirements

Autorzy:

Lisiecka, Maria

Powiązania:

https://bibliotekanauki.pl/articles/1828334.pdf

Data publikacji:

2017

Wydawca:

Politechnika Gdańska

Tematy:

category of efficiency
general efficiency of enterprises
efficiency analysis
kategoria efektywności
efektywność ogólna przedsiębiorstw
analiza efektywności

Opis:

Efficiency is an economic category, which is often found not only in economics, but also in a more general way. Due to the popularization of this concept, there are many differences in the way it is defined. There is therefore a need to redefine the notion of efficiency both at the general level and on the basis of economic theories rather than the colloquial meaning of the word. It should be a necessary step in the process of assessing the efficiency of an enterprise, often only limited to financial analysis. There are business sectors relevant to functioning of company and strategic from perspectives whose analysis in current practice is neglected and does not consist into an analysis of the efficiency of the whole enterprise. The purpose of this article is to try to define a new category of efficiency. This should be a necessary preparatory phase of analysis, leading to a global look at efficiency in the context of the whole enterprise, not just its individual areas. The research hypothesis is that, in response to the complexity of the enterprise and the complexity of its assessment, and the widespread use of the notion of efficiency, the extension of the components of the overall efficiency assessment will improve the real assessment of business activity. Methods used in the work are literature studies and critical analysis, simple observation of the Polish enterprise market and intuitive method. The result of the analysis is to organize the definition of efficiency and to introduce a generic, newly defined concept of efficiency that will enable the whole enterprise to be covered and thus bring researchers closer to the analysis of the actual level of overall effectiveness.
Efektywność jest kategorią ekonomiczną w trwały sposób związana z ekonomią, spotykaną często nie tylko w ekonomii, ale zdecydowanie powszechniej. W związku z popularyzacją tego pojęcia powstało wiele różnic w sposobie jej definiowania. Istnieje zatem potrzeba redefinicji pojęcia efektywności zarówno na poziomie ogólnym, jak i w oparciu o teorie ekonomiczną, a nie potoczne znaczenie tego słowa. Powinien być to etap konieczny w procesie oceny efektywności przedsiębiorstwa, nazbyt często zawężanej jedynie do analizy finansowej. Istnieją sektory przedsiębiorstwa istotne z jego perspektywy funkcjonalnej i strategicznej, których analiza w obecnej praktyce jest pomijana lub zaniedbywana i nie składa się na analizę efektywności całego przedsiębiorstwa. Celem artykułu jest próba nowego zdefiniowania kategorii efektywności. Powinien być to niezbędny etap przygotowawczy analizy, prowadzący do globalnego spojrzenia na efektywności w kontekście całego przedsiębiorstwa, nie tylko poszczególnych jego obszarów. Hipoteza badawcza brzmi: w odpowiedzi na rozbudowanie kompleksowości przedsiębiorstw i złożoności ich oceny oraz zbyt powszechne użycie pojęcia efektywności, rozszerzenie elementów tworzących ogólną ocenę efektywności poprawi realną ocenę aktywności przedsiębiorstw. Metody użyte w pracy to studia literaturowe i analiza krytyczna, obserwacja prosta rynku przedsiębiorstw w Polsce oraz metoda intuicyjna. Wynikiem przeprowadzonej analizy jest uporządkowanie definicji efektywności oraz wprowadzenie ogólnego, nowo zdefiniowanego pojęcia efektywności, które umożliwi objęcie całości przedsiębiorstwa i tym samym zbliży badaczy do analizy faktycznego poziomu efektywności ogólnej.

Źródło:

Przedsiębiorstwo we współczesnej gospodarce - teoria i praktyka; 2017, 3, 22; 249-262
2084-6495

Pojawia się w:

Przedsiębiorstwo we współczesnej gospodarce - teoria i praktyka

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 26.

Tytuł:

The energy efficiency gap in Turkish maritime transportation

Autorzy:

Konur, Olgun
Bayraktar, Murat
Pamik, Murat
Kuleyin, Barış
Nuran, Mustafa

Powiązania:

https://bibliotekanauki.pl/articles/259437.pdf

Data publikacji:

2019

Wydawca:

Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa

Tematy:

energy efficiency gap
maritime transportation
energy efficiency technologies
carbon emission

Opis:

The Turkish Merchant Shipping Industry has recently witnessed an increasing awareness of the importance to minimize environmental pollution and fuel oil consumption. Together with certain non-governmental organizations and media concerns about environmental protection, the International Maritime Organization (IMO) has been strict on controlling undesirable effects on the environment and, consequently, forcing shipping companies to minimize their emissions. Besides, today’s highly advanced technology companies over the world have developed various innovative systems that can be utilized to minimize carbon emission, thus giving assurance to relevant investors that their investments are most likely to turn out well with a considerable financial gain in the short or long term. Despite all such favorable developments, in a general look, shipping companies seem reluctant in making use of technologies providing efficiency in energy consumption. This reluctance has eventually brought about the term “Energy Efficiency Gap”. This research conducts a questionnaire, created by Acciaro et al. [1], among the shipping companies in Turkey. 20 respondent companies, who represent 26 percent of the Turkish owned merchant marine fleet of over 1000 gross tonnage in terms of deadweight cargo capacity, participated in the research. The Pearson correlation analysis was used, and interpretations were made according to the obtained statistical values. The aim of the research was to identify reasons and points restraining the use of new technologies regarding energy efficiency, as well as to develop proposals for the innovators in this field about how to overcome this handicap concerning technical and managerial aspects of gaining energy efficiency.

Źródło:

Polish Maritime Research; 2019, 3; 98-106
1233-2585

Pojawia się w:

Polish Maritime Research

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 27.

Tytuł:

Assessing the Intangibles: Socioeconomic Benefits of Improving Energy Efficiency
Ocena wartości niematerialnych: społeczno-ekonomiczne korzyści z poprawy efektywności energetycznej

Autorzy:

Bartoszewicz-Burczy, H.
Baumgartner, R. J.
Fawcett, T.
Fritz, M. M. C.
Killip, G.
Valladolid, T.
Violi, C.

Powiązania:

https://bibliotekanauki.pl/articles/952958.pdf

Data publikacji:

2018

Wydawca:

ENERGA

Tematy:

efektywność energetyczna
korzyść
energy efficiency
multi benefits of energy efficiency

Opis:

Poprawa efektywności energetycznej może przynieść wiele korzyści dla gospodarki i społeczeństwa. Jednak programy efektywności energetycznej są często oceniane jedynie na podstawie oszczędności energii bez uwzględnienia niematerialnych korzyści społeczno-ekonomicznych. W rezultacie całkowita wartość korzyści efektywności energetycznej w gospodarkach krajowych i w ujęciu globalnym jest znacząco zaniżona. Zasadniczym celem artykułu jest wskazanie i – na podstawie przedstawionych studiów przypadku – analiza wielorakich korzyści wynikających z poprawy efektywności energetycznej.
Poprawa efektywności energetycznej może przynieść wiele korzyści dla gospodarki i społeczeństwa. Jednak programy efektywności energetycznej są często oceniane jedynie na podstawie oszczędności energii bez uwzględnienia niematerialnych korzyści społeczno-ekonomicznych. W rezultacie całkowita wartość korzyści efektywności energetycznej w gospodarkach krajowych i w ujęciu globalnym jest znacząco zaniżona. Zasadniczym celem artykułu jest wskazanie i – na podstawie przedstawionych studiów przypadku – analiza wielorakich korzyści wynikających z poprawy efektywności energetycznej.

Źródło:

Acta Energetica; 2018, 4; 99-104
2300-3022

Pojawia się w:

Acta Energetica

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 28.

Tytuł:

The energy efficiency gap in Turkish maritime transportation

Autorzy:

Konur, Olgun
Bayraktar, Murat
Pamik, Murat
Kuleyin, Barış
Nuran, Mustafa

Powiązania:

https://bibliotekanauki.pl/articles/962688.pdf

Data publikacji:

2019

Wydawca:

Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa

Tematy:

energy efficiency technologies
carbon emission
energy efficiency gap
maritime transportation

Opis:

The Turkish Merchant Shipping Industry has recently witnessed an increasing awareness of the importance to minimize environmental pollution and fuel oil consumption. Together with certain non-governmental organizations and media concerns about environmental protection, the International Maritime Organization (IMO) has been strict on controlling undesirable effects on the environment and, consequently, forcing shipping companies to minimize their emissions. Besides, today’s highly advanced technology companies over the world have developed various innovative systems that can be utilized to minimize carbon emission, thus giving assurance to relevant investors that their investments are most likely to turn out well with a considerable financial gain in the short or long term. Despite all such favorable developments, in a general look, shipping companies seem reluctant in making use of technologies providing efficiency in energy consumption. This reluctance has eventually brought about the term “Energy Efficiency Gap”. This research conducts a questionnaire, created by Acciaro et al. [1], among the shipping companies in Turkey. 20 respondent companies, who represent 26 percent of the Turkish owned merchant marine fleet of over 1000 gross tonnage in terms of deadweight cargo capacity, participated in the research. The Pearson correlation analysis was used, and interpretations were made according to the obtained statistical values. The aim of the research was to identify reasons and points restraining the use of new technologies regarding energy efficiency, as well as to develop proposals for the innovators in this field about how to overcome this handicap concerning technical and managerial aspects of gaining energy efficiency.

Źródło:

Polish Maritime Research; 2019, 3; 98-106
1233-2585

Pojawia się w:

Polish Maritime Research

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 29.

Tytuł:

Efficiency Container Ports in Brazil: A DEA and FDH Approach

Autorzy:

Cabral, Alexandra Maria Rios
Ramos, Francisco S.

Powiązania:

https://bibliotekanauki.pl/articles/14476432.pdf

Data publikacji:

2018-03-15

Wydawca:

Wyższa Szkoła Bankowa we Wrocławiu

Tematy:

DEA
FDH
container terminal
Brazilian ports
port efficiency
technical efficiency

Opis:

Aim: This study aims to evaluate the technical efficiency of 44 Brazilian port terminals that handled containers in 2016. The evaluation will first proceed by identifying the main benchmarks. It will then provide an analysis of variables that may have an effect on technical efficiency as well as the nature of their relationship with the latter--namely: container movement and specialized terminals.   Design / Research methods: In this work we apply the techniques of Data Envelopment Analysis and Free Disposal Hull. Output-oriented models were constructed, using three inputs - berth depth, berth length and number of berths, and three outputs - number of containers handled, medium board measured in container handled per hour of mooring, and medium consignment rate measured in container throughput per ship.   Conclusions / findings: The main results show that half of the terminals have an inefficient infrastructure, with capacity larger than necessary to meet current demand for transportation of containers. In addition, there is a strong relationship between the efficiency and size of a terminal port and between the efficiency and degree of specialization. Moreover, the private use terminal of (TUP) Itacal and public quay OCRIM can serve as benchmarks for most of the terminals.   Originality / value of the article: Relatively few works in the literature tried to measure technical efficiency for developing countries. Besides that, none of the works found regarding Brazilian ports have shown the scenario after promulgation of the Port’s Law in 2013, and only a few used container cargo as focus. This article is of interest for scientists of the sector, exporters/importers, and Brazilian Government officers interested in observing the effects of public policies aimed at the sector. We also suggest future work concerning the sector's improvements which can follow from our findings. 

Źródło:

Central European Review of Economics and Management; 2018, 2, 1; 43-64
2543-9472

Pojawia się w:

Central European Review of Economics and Management

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 30.

Tytuł:

Energy efficiency – selected thermo-ecological problems

Autorzy:

Ziębik, Andrzej
Stanek, Wojciech

Powiązania:

https://bibliotekanauki.pl/articles/239928.pdf

Data publikacji:

2020

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

energy efficiency
system analysis
exergy
thermo-ecology
energy ecological
efficiency

Opis:

The paper is devoted to some problems connected with last modification of EU directive on energy efficiency, viz.: free choice of the measure concerning the improvement of energy efficiency, i.e. final or primary energy consumption, corresponding energy savings or energy-consumption index; however without cumulative consumption or cumulative savings of primary energy. In EU directive it has been stressed the importance of measurements systems (reliable measurement information); but has not been recommended any advanced validation of measurements results, nor energy auditing or algorithms of calculating the energy savings due to improvement of energy efficiency concerning large industrial plants. Evaluation of complex buildings should be realized by means of the system method (input-output analysis). The separate problem is devoted to application of thermo-ecological approach in the analysis of complete results of improving the energy efficiency. Human activity is connected with the depletion of nonrenewable resources, including primary energy, due to not only production of consumer goods but also the necessity of compensating the unfavourable effects of harmful emissions from energy-technological processes. Therefore the index of energy-ecological efficiency has been proposed as the most competent evaluation of improvement energy efficiency of production processes and systems.

Źródło:

Archives of Thermodynamics; 2020, 41, 2; 277-299
1231-0956
2083-6023

Pojawia się w:

Archives of Thermodynamics

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 31.

Tytuł:

Structure of technical efficiency of insurers in the life insurance industry in Poland

Autorzy:

Ortyński, Kazimierz
Wołoszyn, Jacek

Powiązania:

https://bibliotekanauki.pl/articles/16729747.pdf

Data publikacji:

2022

Wydawca:

Instytut Naukowo-Wydawniczy "SPATIUM"

Tematy:

life insurance market
cost efficiency
profit efficiency
stochastic frontier analysis

Opis:

The primary objective of the article was to examine the level and efficiency structure of insurance companies on life insurance market  in Poland. The study presents critical analysis of the insurance literature relating to technical efficiency of insurers, i.e. methods of estimating efficiency, the form of the efficiency  frontier  model, the choice of production factors and insurance production. The study used the methods of mathematical and econometric modelling in SFA  method. The results the technical efficiency study for 22 life insurance companies for a period between 2011-2020 using the SFA method, showed high average cost efficiency of insurers (0.9140) and lower profit efficiency (0. 8565). It was confirmed that a group of large companies achieved higher cost efficiency than the remaining companies, suggesting that large companies benefited from the scale of production.  In contrast, higher average profit efficiency was recorded for the remaining companies.

Źródło:

Central European Review of Economics & Finance; 2022, 39, 4; 24-38
2082-8500
2083-4314

Pojawia się w:

Central European Review of Economics & Finance

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 32.

Tytuł:

Efficiency of insurance companies in the Czech Republic and Poland

Autorzy:

Grmanová, Eva
Pukala, Ryszard

Powiązania:

https://bibliotekanauki.pl/articles/18797289.pdf

Data publikacji:

2018

Wydawca:

Instytut Badań Gospodarczych

Tematy:

efficiency
efficiency score
insurance companies
Data Envelopment Analysis
Tobit analysis

Opis:

Research background: The insurance market is an important part of the financial system. The international concept of insurance operations brings certainty and helps to balance the economic results. Purpose of the article: The aim of the paper is to compare  the efficiency of life insurance of commercial insurance companies in the Czech Republic and Poland using the Data Envelopment Analysis model (DEA). Methods: The methods used in the paper are descriptive statistics, DEA model and Tobit regression model. DEA models are nonparametric quantitative models for efficiency assessment. They use linear programming to transform multiple inputs into multiple outputs. The efficiency of the subjects analyzed is assessed based on the efficiency scores.  Findings & Value added: The subject of our analysis was 17 commercial insurance companies in the Czech Republic and 26 commercial insurance companies in Poland. Ten insurance companies were efficient on the common Czech-Polish insurance market. The share of efficient insurance companies was approximately equal. The arithmetic mean of the efficiency scores was higher in Poland than in the Czech Republic. The variability of the efficiency scores of Czech insurance companies was greater than the variability of the efficiency scores of Polish insurance companies. The  correlations with efficiency score as the dependent variable and with market share as the independent variable of Tobit regression were very low.

Źródło:

Oeconomia Copernicana; 2018, 9, 1; 71-85
2083-1277

Pojawia się w:

Oeconomia Copernicana

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 33.

Tytuł:

The energy efficiency gap in Turkish maritime transportation

Autorzy:

Konur, Olgun
Bayraktar, Murat
Pamik, Murat
Kuleyin, Barış
Nuran, Mustafa

Powiązania:

https://bibliotekanauki.pl/articles/962694.pdf

Data publikacji:

2019

Wydawca:

Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa

Tematy:

energy efficiency gap
maritime transportation
energy efficiency technologies
carbon emission

Opis:

The Turkish Merchant Shipping Industry has recently witnessed an increasing awareness of the importance to minimize environmental pollution and fuel oil consumption. Together with certain non-governmental organizations and media concerns about environmental protection, the International Maritime Organization (IMO) has been strict on controlling undesirable effects on the environment and, consequently, forcing shipping companies to minimize their emissions. Besides, today’s highly advanced technology companies over the world have developed various innovative systems that can be utilized to minimize carbon emission, thus giving assurance to relevant investors that their investments are most likely to turn out well with a considerable financial gain in the short or long term. Despite all such favorable developments, in a general look, shipping companies seem reluctant in making use of technologies providing efficiency in energy consumption. This reluctance has eventually brought about the term “Energy Efficiency Gap”. This research conducts a questionnaire, created by Acciaro et al. [1], among the shipping companies in Turkey. 20 respondent companies, who represent 26 percent of the Turkish owned merchant marine fleet of over 1000 gross tonnage in terms of deadweight cargo capacity, participated in the research. The Pearson correlation analysis was used, and interpretations were made according to the obtained statistical values. The aim of the research was to identify reasons and points restraining the use of new technologies regarding energy efficiency, as well as to develop proposals for the innovators in this field about how to overcome this handicap concerning technical and managerial aspects of gaining energy efficiency.

Źródło:

Polish Maritime Research; 2019, 3; 98-106
1233-2585

Pojawia się w:

Polish Maritime Research

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 34.

Tytuł:

Badania sprawności hydraulicznej w mieszalniku z dwoma mieszadłami na wspólnym wale
Study on the pumping and circulation efficiency in a dual agitated vessel

Autorzy:

Duda, A.
Kamieński, J.
Talaga, J.

Powiązania:

https://bibliotekanauki.pl/articles/2070039.pdf

Data publikacji:

2009

Wydawca:

Stowarzyszenie Inżynierów i Techników Mechaników Polskich

Tematy:

mieszalnik dwustopniowy
sprawność hydrauliczna
dual impeller
pumping efficiency
circulation efficiency

Opis:

W pracy przedstawiono wyniki obliczeń sprawności hydraulicznej dla różnych układów dwóch mieszadeł na wspólnym wale, wyznaczonej w oparciu o wydajność pompowania oraz wydajność przepływu cyrku-lacyjnego w mieszalniku. Zbadano wpływ odległości pomiędzy mieszadłami na wartość sprawności hydraulicznej w mieszalniku dwustopniowym.
Results of the pumping and the circulation efficiency for different impeller configurations in a dual agitated vessel are presented in the paper. An influence of impellers' spacing on the pumping and circulation efficiency was examined.

Źródło:

Inżynieria i Aparatura Chemiczna; 2009, 1; 92-93
0368-0827

Pojawia się w:

Inżynieria i Aparatura Chemiczna

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 35.

Tytuł:

Efektywność energetyczna firmy - wymogiem rynku i czasów w których żyjemy
Energy efficiency of a company - a requirement of the market and times in which we live

Autorzy:

Zaręba, K.

Powiązania:

https://bibliotekanauki.pl/articles/272189.pdf

Data publikacji:

2009

Wydawca:

Górnośląska Wyższa Szkoła Pedagogiczna im. Kardynała Augusta Hlonda

Tematy:

efektywność energetyczna
energia
firma
wydajność
energy efficiency
energy
company
efficiency

Opis:

W artykule przedstawiono uwarunkowania i działania prowadzące do podniesienia efektywności energetycznej w firmie, pokreślono znaczenie edukacji i możliwości pokonywania ograniczeń. Uwypuklono ekonomiczny i ekologiczny aspekt wydajności energetycznej. Wskazano możliwości zastosowania matematycznych metod jej interpretacji. Podkreślono, że efektywność energetyczna jest kluczowym elementem niezbędnym do osiągnięcia klimatyczno - energetycznych celów Unii Europejskiej, w tym również Polski.
The article presents the overall frame and policies aimed at improving the energy efficiency in companies; the importance of education and the environmental aspect of energy efficiency have been stressed. The potential for applying mathematical methods for efficiency inter-pretation has been presented. Energy efficiency has been underlined as the key element of achieving the climatic and energy objectives in Poland and the European Union.

Źródło:

Problemy Ekologii; 2009, R. 13, nr 2, 2; 83-87
1427-3381

Pojawia się w:

Problemy Ekologii

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 36.

Tytuł:

Input Use Efficiency in Operational and Maintenance Management of Small-Pumping Scale Irrigation Systems in Red River Delta, Vietnam

Autorzy:

Dinh, Dao Van
Nguyen, Phong Tung
Tran, Dat Van
Mukheibir, Pierre
Ton, Au Nu Hai

Powiązania:

https://bibliotekanauki.pl/articles/2086427.pdf

Data publikacji:

2022

Wydawca:

Polskie Towarzystwo Inżynierii Ekologicznej

Tematy:

technical efficiency
scale efficiency
irrigation system
DEA
data envelopment analysis

Opis:

In the Red River Delta (RRD) of Vietnam, small-pumping systems are one of main systems for paddy irrigation. It is imperative to analyze the operation and maintenance performance of irrigation systems by using the input factors when applying pricing mechanisms in the irrigation sector in Vietnam. In this study, based on the data of 48 irrigation systems managed by teams under irrigation companies, the non-parametric program, Data Envelopment Analysis, was used to measure the technical efficiency and scale efficiency for small-pumping scale irrigation systems in the Red River Delta. The seven input factors were the annual direct and indirect labor, materials, electricity, recurrent maintenance, overhead, and depreciation cost, and an output factor was the paddy areas irrigated by the systems. The results demonstrated that the average technical efficiency scores under constant returns to scale and variable returns to scale were 0.924 and 0.946, respectively. Thus, the wasted inputs were suggested to be 7.6% and 5.4% of the current input level, respectively. The average scale efficiency score was 0.977 and therefore, some 72.9% of the Decision-Making Units should adjust their input scales to achieve the efficiency in input factors.

Źródło:

Journal of Ecological Engineering; 2022, 23, 5; 207--215
2299-8993

Pojawia się w:

Journal of Ecological Engineering

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 37.

Tytuł:

Efficiency frontier on Japanese banking system

Autorzy:

Ivan, Ionut Cristian

Powiązania:

https://bibliotekanauki.pl/articles/646300.pdf

Data publikacji:

2015-12

Wydawca:

Uniwersytet Łódzki. Wydawnictwo Uniwersytetu Łódzkiego

Tematy:

data envelopment analysis
free disposability hull
efficiency frontier
distance
financial efficiency
super efficiency
C14
D24

Opis:

Since the emergence of the efficiency frontier techniques, a series of comparisons between the methods that led to the resultant efficiency has been presented. In this paper, data from 99 Japanese banks are used in order to prove the applicability of efficiency frontier analysis on the East-Asian financial system and to reveal the differences between inter and intra-regional banks, showing the effect of the present financial crisis on the efficiency of the studied banks. DEA and FDH are used to determine the technical and scale efficiency of the analyzed banks and also it compares fully efficient banks by ranking them through the super-efficiency notion.

Źródło:

Ekonomia Międzynarodowa; 2015, 012
2082-4440
2300-6005

Pojawia się w:

Ekonomia Międzynarodowa

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 38.

Tytuł:

Wykorzystanie metody DEA do pomiaru efektywności liceów ogólnokształcących w Szczecinie
The use of the DEA method to measure the efficiency of high schools in Szczecin

Autorzy:

Brzezicki, Łukasz

Powiązania:

https://bibliotekanauki.pl/articles/19478698.pdf

Data publikacji:

2020-12-15

Wydawca:

Uniwersytet Warszawski. Wydawnictwo Naukowe Wydziału Zarządzania

Tematy:

efektywność krzyżowa
efektywność
krzyżowa efektywność gry
liceum
szkolnictwo
cross efficiency
education
efficiency
game cross efficiency
high school

Opis:

W artykule dokonano pomiaru efektywności 19 szczecińskich liceów ogólnokształcących w 2018 roku za pomocą dwóch modeli DEA (Data Envelopment Analysis) zorientowanych na wyniki. Wykorzystano model Cross Efficiency (CE) oraz Game Cross Efficiency (GCE) do oszacowania efektywności krzyżowej. Przeanalizowano efektywność techniczną szkół średnich pod względem ilości (liczby uczniów) i jakości (rankingów edukacji). W zależności od wybranego modelu empirycznego za wyniki przyjęto liczbę uczniów, absolwentów lub wskaźnik rankingowy i średnią wartość matur. Natomiast za nakłady w obu przypadkach uwzględniono liczbę pracowników pedagogicznych. Najniższą efektywnością we wszystkich obszarach – zarówno ilościowych, jak i jakościowych – charakteryzowało się LO Mistrzostwa Sportowego w CMS. Najwyższe wartości efektywności w zakresie ilościowej charakterystyki kształcenia uzyskało I LO, a odnośnie do jakościowego aspektu edukacji – XIII LO. Szkoły, które zdecydowałyby się na strategie braku współpracy z innymi jednostkami, uzyskałyby wyższy poziom efektywności niż w przypadku współpracy wszystkich ośrodków edukacyjnych średnio o 7 p. proc w aspekcie ilościowym i 3 p. proc w jakościowym.
The article measures the efficiency of 19 high schools in Szczecin in 2018 using two DEA (Data Envelopment Analysis) models focused on results. The Cross Efficiency model (CE) and Game Cross Efficiency model (GCE) were used to estimate cross-flow efficiency. The technical efficiency of high schools was analysed in terms of quantity (number of students) and quality (education rankings). Depending on the empirical model chosen, the number of students, graduates or ranking index and the average value of high schools baccalaureate were assumed as the results. In both cases, the number of pedagogical employees was taken into account for the inputs. The lowest efficiency in the areas, both in terms of quantity and quality, was observed in the case of LO Sport Championships in CMS. The highest values of efficiency in terms of the quantitative characteristics of education were achieved by the 1st High School, and as regards the qualitative aspect of education at the XIII High School. Schools that opted for non-cooperation strategies with other units would achieve a higher level of efficiency than in the case of cooperation of all educational institutions by 7 p.p. on average in terms of quantity and 3 p.p. in terms of quality.

Źródło:

Studia i Materiały; 2020, 2(33); 18-31
1733-9758

Pojawia się w:

Studia i Materiały

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 39.

Tytuł:

Impact of tractor wheels on physical properties of different soil types and the irrigation efficiency of the furrow irrigation method

Autorzy:

Vistro, Rahim Bux
Talpur, Mashooque Ali
Shaikh, Irfan Ahmed
Mangrio, Munir Ahmed

Powiązania:

https://bibliotekanauki.pl/articles/2073733.pdf

Data publikacji:

2022

Wydawca:

Instytut Technologiczno-Przyrodniczy

Tematy:

furrow storage efficiency
ridge storage efficiency
irrigation methods
soil physical properties
tractor wheel trafficking
water use efficiency

Opis:

In furrow irrigation, the maximum lateral movement of water in ridges is more desirable than the vertical downward movement. This can be achieved by compacting the furrows. Thus, the study examines the impact on furrow soil compaction by tractor wheel trafficking during mechanical operations in the different soil types. In this experiment, the three-wheel tractor compaction includes: 1) control (no soil compaction), 2) compaction through 3-wheel tractor passes, and 3) compaction through 6-wheel passes under three different soil textural classes such as: clay loam, silty clay loam and silty loam soils. The impact of various treatments on clay loam, silty clay loam, and silty loam under 3- and 6-wheel passes showed increased bulk density (7–12%), field capacity (9–19%), ridge storage efficiency (35–38%), water use efficiency (16–20.5%) and decreased soil porosity (7–16%), infiltration (8–20%), and furrow storage efficiency (28–41%) over the control. This study shows comparable results of 6-passes with other studies in which more than 6-passes were used to compact the soil. This study suggested that farmers can maximise water use efficiency by compacting their furrows using 6-passes tractor trafficking.

Źródło:

Journal of Water and Land Development; 2022, 52; 166--171
1429-7426
2083-4535

Pojawia się w:

Journal of Water and Land Development

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 40.

Tytuł:

Wskaźnik eksploatacyjnej efektywności energetycznej jako element planowania przebiegu rejsu jednostki rybackiej
Energy efficiency operational indicator as an element for planning the trip of fishin vessel

Autorzy:

Głowacki, B.

Powiązania:

https://bibliotekanauki.pl/articles/112592.pdf

Data publikacji:

2017

Wydawca:

STE GROUP

Tematy:

zarządzanie efektywnością energetyczną
monitorowanie efektywności energetycznej
audyt efektywności energetycznej
energy efficiency management
energy efficiency monitoring
energy efficiency audits

Opis:

Wykorzystanie wskaźnika eksploatacyjnej efektywności energetycznej EEOI do analizy efektywności eksploatacyjnej i planowania przebiegu rejsu jednostek rybackich to rozwiązanie innowacyjne. W artykule przedstawiono autorskie oprogramowania dedykowanego dla tego typu jednostek, pozwalające na zbieranie w trybie on-line danych opisujących przebieg rejsu i pojedynczych działań wykonywanych przez jednostkę. Odpowiednia interpretacja i korelacja parametrów techniczno-eksploatacyjnych z wykorzystaniem programu komputerowego, umożliwi uzyskanie danych pozwalających na ocenę efektywności eksploatacyjnej, z uwzględnieniem stanu technicznego jednostki w dowolnych warunkach eksploatacyjnych. Pozwoli również na planowanie rejsu.
The use of the energy efficiency operational index to analyse the operational efficiency and planning of fishing vessels trips is an innovative solution. This article presents authoring software dedicated to this type of vessel, allowing online collection of data describing the course of the trip and individual activities performed by the fishing vessel. Correct interpretation and correlation of technical and operational parameters with the use of this program will allow to obtain data allowing to evaluate the energy efficiency, taking into account technical condition of the unit under any operating conditions. It will also allow you to plan your trip.

Źródło:

Systemy Wspomagania w Inżynierii Produkcji; 2017, 6, 6; 91-101
2391-9361

Pojawia się w:

Systemy Wspomagania w Inżynierii Produkcji

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 41.

Tytuł:

An economic approach to broiler production. A case study from Hungary
Ekonomiczne podejście do produkcji brojlerów. Studium przypadku z Węgier

Autorzy:

Szollosi, L.
Szucs, I.

Powiązania:

https://bibliotekanauki.pl/articles/863549.pdf

Data publikacji:

2014

Wydawca:

The Polish Association of Agricultural and Agribusiness Economists

Tematy:

broiler chicken
economic efficiency
technical efficiency
animal production
model calculation
cost
benefit
production level
European production efficiency factor
EPEF zob.European production efficiency factor
Hungary

Opis:

. The general objective of this study is to present the economic situation of Hungarian broiler production. A deterministic model was constructed to investigate the role of technical efficiency on profitability. As the results demonstrate, in current economic conditions broiler production can be profitable if the European Production Efficiency Factor (EPEF) is above 300-310. A lower level of technology, cheaper feed and chicks in addition to their weaker quality deteriorates the technical efficiency of production, which results in poor economic indicators. Therefore, it is not worth saving on either the level of technology or the quality of chicks or feed. Thus, the key purpose of future developments should be: increasing efficiency.
Główny celem badań było przedstawienie ekonomicznej sytuacji chowu brojlerów na Węgrzech. Aby zbadać wpływ technicznej wydajności na rentowność stworzono deterministyczny model. Jak wskazują wyniki, przy obecnych warunkach ekonomicznych chów brojlerów może być rentowny, jeśli europejski czynnik wydajności produkcji (EPEF) utrzymuje się powyżej 300-310. Niższy poziom technologiczny, tańsza pasza i kurczęta oraz ich niższa jakość obniża techniczną wydajność produkcji, która skutkuje niskimi wskaźnikami ekonomicznymi. Dlatego nie warto oszczędzać na poziomie technologicznym i na jakości kurcząt lub paszy. W związku z tym kluczowym celem rozwoju w przyszłości powinno być zwiększenie wydajności.

Źródło:

Roczniki Naukowe Stowarzyszenia Ekonomistów Rolnictwa i Agrobiznesu; 2014, 16, 3
1508-3535
2450-7296

Pojawia się w:

Roczniki Naukowe Stowarzyszenia Ekonomistów Rolnictwa i Agrobiznesu

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 42.

Tytuł:

COMPARATIVE ANALYSIS OF ECONOMIC EFFICIENCY OF POLISH AND GERMAN LISTED COMPANIES

Autorzy:

Sajnóg, Artur

Powiązania:

https://bibliotekanauki.pl/articles/489037.pdf

Data publikacji:

2015

Wydawca:

Instytut Badań Gospodarczych

Tematy:

efficiency
measure of efficiency
DEA
Polish and German joint-stock companies

Opis:

The main subject of theoretical-empirical study presented in this paper is economic efficiency of companies listed on the Polish and German capital market. The discussed research problem was investigated in the form of a comparative analysis and realized in two parts. The discussion presented in the first part depicts mainly theoretical reflections on the essence and assessment measures of companies’ economic efficiency. The second part presents the results of a comparative empirical research on economic efficiency of the companies listed on the Warsaw Stock Exchange and included in the WIG30 index as well as the companies listed on the Frankfurt Stock Exchange, which belong to the DAX index. The research period comprises years between 2004-2013. A comparative analysis of economic efficiency of the companies was conducted using a traditional ratio analysis and the nonparametric DEA method. The results of the empirical research confirm that German companies achieved significantly higher values of basic economic categories in the analysed decade, financial results in particular; however, their generated profits did not reflect in higher values of profitability ratios. Polish companies performed much better as they also showed higher efficiency from the DEA’s point of view.

Źródło:

Oeconomia Copernicana; 2015, 6, 2; 67-87
2083-1277

Pojawia się w:

Oeconomia Copernicana

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 43.

Tytuł:

Exergetic performance analysis of solar air heater with inverted L-shape ribs as roughness element

Autorzy:

Chaudhari, Manmohan
Sharma, Sohan Lal
Debbarma, Ajoy

Powiązania:

https://bibliotekanauki.pl/articles/27312231.pdf

Data publikacji:

2023

Wydawca:

Polska Akademia Nauk. Czasopisma i Monografie PAN

Tematy:

solar air heater
heat transfer
exergy loss
exergy efficiency
thermal efficiency

Opis:

Improvement in the exegetic efficiency of a solar air heater (SAH) can be done by enhancing the rate of heat transfer. In this work, the exergetic efficiency optimization of an artificially roughened solar air heater having an inverted L-shape rib has been performed. The numerical analysis of the exergetic performance of the solar air heater was carried out at a constant heat flux of 1000 W/m2 . The study was conducted to investigate the effect of different relative roughness pitch (7.14–17.86) on the exergy losses, under the Reynolds number range of 3000 to 18 000. The roughness parameter of this geometry has been optimized and found to be among functional operating parameters like average solar intensity and temperature rise across the collector. The optimized value of relative roughness pitch is 17.86 at the isolation of 1000 W/m2 , and the parameter of temperature rise ranges from 0.005 to 0.04.

Źródło:

Archives of Thermodynamics; 2023, 44, 3; 241--267
1231-0956
2083-6023

Pojawia się w:

Archives of Thermodynamics

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 44.

Tytuł:

Evaluating an inland waterway cargo vessel’s energy efficiency indices

Autorzy:

Kalajdžić, Milan
Vasilev, Matija
Momčilović, Nikola

Powiązania:

https://bibliotekanauki.pl/articles/32898591.pdf

Data publikacji:

2022

Wydawca:

Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa

Tematy:

inland vessels
energy efficiency
energy efficiency of inland vessels
EEXI
EEDI

Opis:

Although the International Maritime Organization (IMO) introduced the energy efficiency requirements for ships more than a decade ago, to date, inland navigation has not been affected by corresponding regulations at all. Therefore, inland waterway vessels are left with no mandatory requirements that could push their technology into more energy efficient design. Fortunately, there are certain pioneering attempts to define energy efficiency criteria for inland vessels. This paper tries to gather and provide a review of such methods. Moreover, a typical Danube cargo inland vessel’s data are used to evaluate their current energy efficiency levels with respect to provisional criteria. Consequently, two methods are found and used here. They are both based on IMO’s energy efficiency concept but modified for the inland waterway vessels. The methods delivered a significant difference in applicability and were difficult to compare. Moreover, shallow and deep-water effects are explored in the same regard but provided unsound conclusions. The final results displayed discrepancies in energy efficiency levels for the same vessels and so the methodology should be improved and harmonised, if it is to be introduced as mandatory for inland waterway vessels. The analysis provided a glimpse into the current condition of the traditional design of the Danube inland fleet, with respect to the emerging energy efficiency policies.

Źródło:

Polish Maritime Research; 2022, 2; 27-34
1233-2585

Pojawia się w:

Polish Maritime Research

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 45.

Tytuł:

Efficiency of State Foreign Policy. Introduction to Definition Process
Efektywność polityki zagranicznej państwa. Wstęp do definicji

Autorzy:

Piechowiak-Lamparska, Joanna

Powiązania:

https://bibliotekanauki.pl/articles/1953193.pdf

Data publikacji:

2015-12-31

Wydawca:

Wydawnictwo Adam Marszałek

Tematy:

efficiency of state foreign policy
theoretical category
definition process
efficiency
effectiveness

Opis:

The aim of this article is to present the definition of efficiency of state foreign policy. As a result of theoretical research, the definition of efficiency that views efficiency of state foreign policy as the relationship between the intended objectives and the achieved effects, taking into account the resources used and measures adopted in the pursuit of these objectives. It is the sum of the component efficiencies in achieving the country’s raison d’etat, its long-term and short-term objectives and ad hoc goals, and finally the level of state activity in the international arena
Celem artykułu jest wyznaczenie definicji kategorii efektywności polityki zagranicznej państwa. W wyniku badań teoretycznych została przyjęta definicja ujmująca efektywność polityki zagranicznej państwa jako zależność pomiędzy zamierzonymi celami a osiągniętymi efektami przy uwzględnieniu wykorzystanych zasobów i środków. Jest ona sumą efektywności realizacji racji stanu, realizacji celów długoterminowych, realizacji celów krótkoterminowych, realizacji celów doraźnych oraz poziomu aktywności państwa na arenie międzynarodowej.

Źródło:

Athenaeum. Polskie Studia Politologiczne; 2015, 48; 226-243
1505-2192

Pojawia się w:

Athenaeum. Polskie Studia Politologiczne

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 46.

Tytuł:

Energy Efficiency Design Index as a new criterion in ship design

Autorzy:

Szelangiewicz, T.
Żelazny, K.

Powiązania:

https://bibliotekanauki.pl/articles/359076.pdf

Data publikacji:

2012

Wydawca:

Akademia Morska w Szczecinie. Wydawnictwo AMSz

Tematy:

Energy Efficiency Design Index
International Energy Efficiency Certificate for the ship

Opis:

Since 2013 Energy Efficiency Design Index (EEDI) for new ships will be enforced. Ships meeting the CO2 emission standards will be granted energy certificate required for their exploitation. The paper presents EEDI in the current form, the certification procedure, reduced CO2 emission planned for coming years, as well as potential for further EEDI value reduction.

Źródło:

Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2012, 32 (104) z. 1; 97-101
1733-8670
2392-0378

Pojawia się w:

Zeszyty Naukowe Akademii Morskiej w Szczecinie

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 47.

Tytuł:

Conceptual Design and Performance Analysis of an Exhaust Gas Waste Heat Recovery System for a 10000TEU Container Ship

Autorzy:

Ma, Zheshu
Yang, Dong
Guo, Qiang

Powiązania:

https://bibliotekanauki.pl/articles/259008.pdf

Data publikacji:

2012

Wydawca:

Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa

Tematy:

exergy efficiency
marine diesel engine
thermal efficiency
waste heat recovery system

Opis:

According to operation characteristics of the main engine 9K98ME-C7, a combined turbines-exhaust gas waste heat recovery system is proposed to recover waste heat and increase system energy efficiency. Thermodynamic models based on the first thermodynamic law and the second thermodynamic law are formulated. The superheated steam yield, the total electric power yield, the first thermodynamic law efficiency, the exergy efficiency at different exhaust gas boiler working pressure, and the variation of the exergy efficiency under different feed water temperature and different steam turbine back pressure are analyzed. Thermodynamic results indicate that the most appropriate exhaust gas boiler pressure is 0.8MPa for studied main engine and the total thermal efficiency with combined turbines arrangement has climbed up to 53.8% from 48.5%.

Źródło:

Polish Maritime Research; 2012, 2; 31-38
1233-2585

Pojawia się w:

Polish Maritime Research

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 48.

Tytuł:

Silnik napędzający oszczędność
The Motor Propelling the Economy

Autorzy:

Hałoń, R.
Dukalski, P.
Poprawski, W.

Powiązania:

https://bibliotekanauki.pl/articles/1368424.pdf

Data publikacji:

2013

Wydawca:

Sieć Badawcza Łukasiewicz - Instytut Napędów i Maszyn Elektrycznych Komel

Tematy:

silniki indukcyjne
normy sprawności
energooszczędność
induction motors
efficiency standards
energy efficiency

Opis:

The article concerns the description of new standards of efficiency motors that are currently introduced into European market. The authors describe the norms which create new standards and economic aspects of the use of energy efficient motors because of the amount of energy savings and CO2 emissions to the atmosphere. Part of the article concerns the steps taken by the TAMEL SA to develop and offer the European market in the future efficiency class IE3 Premium and Super Premium IE4 motors.
Artykuł dotyczy opisu nowych standardów sprawności silników indukcyjnych, które są aktualnie wprowadzane na rynek europejski. Autorzy opisują normy określające nowe standardy oraz aspekty ekonomiczne stosowania silników energooszczędnych z uwagi na ilość zaoszczędzonej energii oraz emisji CO2 do atmosfery. Część artykułu dotyczy kroków podjętych przez TAMEL S.A. w celu opracowania oraz zaoferowania w przyszłości rynkowi europejskiemu silników klasy sprawności Premium IE3 oraz Super Premium IE4.

Źródło:

Maszyny Elektryczne: zeszyty problemowe; 2013, 2, 99; 191-197
0239-3646
2084-5618

Pojawia się w:

Maszyny Elektryczne: zeszyty problemowe

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 49.

Tytuł:

DETERMINANTS OF TECHNICAL EFFICIENCY OF PRODUCTION FACTORS AT FAMILY FARMS

Autorzy:

Roman, Sass,

Powiązania:

https://bibliotekanauki.pl/articles/898181.pdf

Data publikacji:

2019-02-20

Wydawca:

Kujawsko-Pomorska Szkoła Wyższa w Bydgoszczy

Tematy:

technical efficiency of production factors
DEA method
regression calculus
efficiency determinants

Opis:

The main objective of the research was to determine the impact of selected endogenous factors, as well as the amount of subsidies from EU funds on the technical efficiency of production factors in family farms. The research included farms from Bydgoszcz subregion which before pre-accession of Poland to the European Union (1996 -2003) benefited from preferential loans. At the same time, in the years 2004-2011, they kept accounting in the Polish FADN system. Using the regression calculus, the impact of articular factors on the technical efficiency of farms was determined. The structural parameters of linear and non-linear models with many independent variables were estimated. As a result of the conducted analyzes, it was found that they improved efficiency: capital expenditure before and after accession, land area increase before accession, production intensity, increase in equity after accession, asset debt and external costs. However, they worsened efficiency: work expenses, pig stocking, debt of equity, fixed costs as well as additional investment activity and the share of subsidies in income.

Źródło:

Roczniki Ekonomiczne Kujawsko-Pomorskiej Szkoły Wyższej w Bydgoszczy; 2018, -(11); 147-162
1899-9573

Pojawia się w:

Roczniki Ekonomiczne Kujawsko-Pomorskiej Szkoły Wyższej w Bydgoszczy

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 50.

Tytuł:

Audyt efektywnościowy czy audyt wykonania zadań w jednostkach sektora finansów publicznych – przegląd literatury krajowej i zagranicznej
Efficiency audit or performance audit in public finance sector entities – national and international literature review

Autorzy:

Ciak, Jolanta
Bednarek, Piotr

Powiązania:

https://bibliotekanauki.pl/articles/1788497.pdf

Data publikacji:

2020

Wydawca:

Wydawnictwo Uniwersytetu Ekonomicznego we Wrocławiu

Tematy:

efektywność
audyt efektywnościowy
audyt wykonania zadań
efficiency
efficiency audit
performance audit

Opis:

Celem artykułu jest wskazanie podobieństw i różnic w zakresie dwóch kategorii audytu, a mianowicie: audytu efektywnościowego i audytu wykonania zadań. Tradycyjny przegląd literatury ma dać odpowiedź na pytanie: Czy można stosować zamiennie oba pojęcia? Badacze bowiem zajmujący się tą problematyką wskazują na podobne ich rozumienie. Studia literaturowe dostarczają szerokiego spektrum możliwości definiowania i interpretowania efektywności, podkreślając wielowymiarowość omawianego pojęcia. Podobna sytuacja jest w przypadku audytu efektywnościowego i audytu wykonania zadań. Zdaniem autorów artykułu można zastosować znak równości pomiędzy tymi pojęciami, bowiem oba rodzaje audytu oznaczają systematyczne, celowe, zorganizowane i obiektywne badanie działań podejmowanych w ramach jednostek funkcjonujących w sektorze finansów publicznych, wykorzystujące kryterium oszczędności, efektywności i skuteczności.
The aim of the article is to indicate the similarities and differences in terms of two categories of audit, namely: effi ciency audit and performance audit. The review of the literature is to answer the question: Can both concepts be used interchangeably? The more so because researchers dealing with this issue indicate a similar understanding of them. Literature studies indicate a wide spectrum of possibilities of defining and interpreting efficiency, emphasizing the multidimensionality of the concept in question. The situation is similar for the efficiency audit and performance audit. In the opinion of the authors of the article, an equal sign can be used between these concepts, because both types of audit mean systematic, purposeful, organized and objective examination of activities undertaken within entities operating in the public finance sector, using the criterion of economy, efficiency and effectiveness.

Źródło:

Prace Naukowe Uniwersytetu Ekonomicznego we Wrocławiu; 2021, 65, 2; 15-32
1899-3192

Pojawia się w:

Prace Naukowe Uniwersytetu Ekonomicznego we Wrocławiu

Dostawca treści:

Biblioteka Nauki

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