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Wyszukujesz frazę "dynamic efficiency" wg kryterium: Temat


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
Artykuł
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
Artykuł
Tytuł:
Prakseologiczna ocena użyteczności metody DEA w diagnozie efektywności organizacji
Praxeological evaluation of the usefulness of the DEA method in the diagnosis of organizational efficiency
Autorzy:
Nowak, M.
Powiązania:
https://bibliotekanauki.pl/articles/202855.pdf
Data publikacji:
2015
Wydawca:
Politechnika Poznańska. Wydawnictwo Politechniki Poznańskiej
Tematy:
efektywność dynamiczna
metoda DEA
prakseologia
dynamic efficiency
data envelopment analysis
praxeology
Opis:
Data Envelopment Analisys (DEA) jest w ostatnich latach jedną z najczęściej stosowanych metod diagnozy efektywności organizacji. W literaturze przedmiotu brakuje jednak publikacji, stanowiących refleksję metodologiczną odnoszącą się do zakresu użyteczności metody DEA i ograniczeń, które wiążą się z jej stosowaniem. Niniejsze opracowanie stanowi odpowiedź na zaobserwowaną w tym zakresie niszę. Celem artykułu jest dokonanie oceny użyteczności metody DEA w diagnozie efektywności organizacji na gruncie teoretycznym w świetle prakseolo-gicznej koncepcji efektywności dynamicznej. Osiągnięcie założonego celu wymagało przedstawienia istoty metody DEA, jej historycznych konotacji oraz zarysu prakseologicznej koncepcji efektywności dynamicznej.
Data Envelopment Analisys (DEA)isin recent years, one of the most common methods of diagnosis efficiency of the organization. In the literature there is no publication, which reflect methodological relating to the scope of the usefulness of the DEA and the limitations that are associated with its use. This study is a response to observed in this area niche. The aim of this article is to assess the usefulness of DEA method in the diagnosis of organizational efficiency theoretically in the light of the praxeological concept of dynamic efficiency. Achieving the objective pursued require the presentation of the essence of the DEA method, its historical connotations and outline praxeological concept of dynamic efficiency.
Źródło:
Zeszyty Naukowe Politechniki Poznańskiej. Organizacja i Zarządzanie; 2015, 66; 101-112
0239-9415
Pojawia się w:
Zeszyty Naukowe Politechniki Poznańskiej. Organizacja i Zarządzanie
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Insider understanding of country development: a novel application of Optimal Control Theory and Data Envelopment Analysis for benchmarking performance of Chilean and Brazilian companies
Autorzy:
Alves Junior, Paulo Nocera
Yushimito, Wilfredo F.
Gude, Jorge Pereira
Melo, Isotilia Costa
Rebelatto, Daisy Aparecida do Nascimento
Powiązania:
https://bibliotekanauki.pl/articles/14430662.pdf
Data publikacji:
2019-03-27
Wydawca:
Wyższa Szkoła Bankowa we Wrocławiu
Tematy:
Data Envelopment Analysis (DEA)
Optimal Control Theory (OCT)
Dynamic Efficiency
Developing Countries
Inventory Control
Production-Inventory System
Benchmarking
Best Practices.
Opis:
Aim: If companies manage their inventory inefficiently, inventory costs can increase significantly due to shortages, overstocking, and risks. Inventory management is critical for company’s success which, in turn, impacts on countries’ development. This paper aims to investigate the efficiency of inventory control systems of companies from Brazil and Chile through Optimal Control Theory and Data Envelopment Analysis. Design/Research methods: Data was collected from Chilean and Brazilian companies covering different industries in which both countries are mostly dependent A new approach using OCT and DEA is applied for dealing with inventory, production, and demand in Dynamic DEA model to benchmark companies’ production-inventory systems. Conclusions/findings: The results show efficient companies among evaluated industries. Such companies are related mainly to Brazilian commerce and Chilean exports. Based on findings, it was possible to identify patterns and relationship among companies and its inventory management. Originality/value of the article: This paper fills a gap in studies including demand, production, and inventory in Dynamic DEA by using OCT to forewarn unrealistic results and observing companies’ behavior. Besides that, this approach is particularly useful for developing countries in this context, determining benchmarks for the most inefficient firms in each sector. Implications of the research: The results show (1) which companies should focus more on improving inventory management, (2) which companies should be used as benchmarks, and (3) it highlights the reasons of different performance of companies in each country. Limitations of the research: For future research, it is suggested including variables and analysis of social and environmental impacts.
Źródło:
Central European Review of Economics and Management; 2019, 3, 1; 47-93
2543-9472
Pojawia się w:
Central European Review of Economics and Management
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Testing of efficiency and dynamic effects of a drive system with a lead screw
Autorzy:
Lisowski, F.
Powiązania:
https://bibliotekanauki.pl/articles/246807.pdf
Data publikacji:
2016
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
lead screws
efficiency
dynamic effects
Opis:
The paper presents experimental studies of a drive system with a lead screw. The concept and the construction of the test stand, its parameters as well as the applied measuring apparatus and the scope of tests are described. Furthermore, a measuring system and a methodology of determining the loads on the nut of the lead screw, based on the strain gauge measurements, were developed. A special nut bracket with specimens for the strain gauge measurement was designed. Since the specimens are simultaneously subjected to tension, two plane bending and non–free torsion, a coefficient essential for determining the torque on the nut of the lead screw was estimated based on the finite element analysis of the nut bracket under complex load condition. The first part of experimental studies includes the determination of the efficiency of the lead screw and the efficiency of the typical drive system with the lead screw. The impact of the load level and the constant resistance in the system are included in the research. The second part of the study concerns the determination of dynamic load coefficients for various operating parameters. The efficiency of the lead screw and the efficiency of a typical drive system with the lead screw as well as the dynamic factors at start–up and braking were determined based on experimental tests referred to a ball screw.
Źródło:
Journal of KONES; 2016, 23, 4; 297-304
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Industrial Plants Performance Evaluation Using Dynamic Dea
Autorzy:
Kluczek, A.
Powiązania:
https://bibliotekanauki.pl/articles/409144.pdf
Data publikacji:
2016
Wydawca:
Politechnika Poznańska. Wydawnictwo Politechniki Poznańskiej
Tematy:
dynamic DEA
energy efficiency
industrial plants
slacks-based measure approach
Opis:
The objective of the paper is to evaluate the energy efficiency performance of industrial plants based on energy audit measures using dynamic Data Envelopment Analysis. The paper demonstrates a three-stage DEA based on slacks-based measure approach to evaluate the energy efficiency of U.S. industrial plants. Also, a 3-step approach to select relevant variables to be employed in slacks-based measure model. The paper has revealed inefficiencies of industrial plants, which were considered as efficient ones examined individually in energy audit procedure. The results indicate that half of analyzed plants are not performing at high energy efficiency, given a total of 6 facilities were operating efficiently. It shows that these industrial plants appear to have the potential to reduce their energy use and cost. Moreover, the results were enriched with the additional analysis of input excesses and output shortfalls and further suggestions for improving energy efficiency are provided.
Źródło:
Research in Logistics & Production; 2016, 6, 5; 465-476
2083-4942
2083-4950
Pojawia się w:
Research in Logistics & Production
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Efficiency measurement in dynamic two-stage network structures with flexible intermediate materials
Autorzy:
Kordrostami, S.
Seyedboveir, S.
Daneshian, B.
Amirteimoori, A.
Powiązania:
https://bibliotekanauki.pl/articles/406486.pdf
Data publikacji:
2018
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
data envelopment analysis
flexible factors
dynamic two-stage network
efficiency
Opis:
Data envelopment analysis (DEA) is a nonparametric method for evaluating the relative efficiency of decision making units (DMUs) described by multiple inputs and multiple outputs. Since DEA was introduced in the 1970s, it has been widely applied to measure the efficiency of a wide variety of production and operation systems, including two-stage production systems with a series or parallel structure. The outputs from the first stage to the next stage are called intermediate factors (or measures). In some real applications, an intermediate material or some part of it can become the final output or input to the second stage of production. Previously existing models cannot be employed directly to measure the efficiency of such systems. The authors introduce a dynamic DEA model that identifies the structure of flexible intermediate factors to maximise the measure of overall system efficiency.
Źródło:
Operations Research and Decisions; 2018, 28, 3; 63-76
2081-8858
2391-6060
Pojawia się w:
Operations Research and Decisions
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Decision support system for water adapting pricing policy
Autorzy:
Berbeka, K.
Bhulai, S.
Magiera, E.
Powiązania:
https://bibliotekanauki.pl/articles/94889.pdf
Data publikacji:
2018
Wydawca:
Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
Tematy:
dynamic pricing system
water price
efficiency of water consumption
demand management
Opis:
In the paper, the conception of Enterprise Information Portal (EIP) as an enduser interface of Simulation and Modeling System for Business (SMS-B) is presented. The system is a proposition of Business Intelligence education platform. EIP portals are also a base for Enterprise Integration Platform (EIP II) introduction in information and communication system in an institution.
Źródło:
Information Systems in Management; 2018, 7, 2; 97-107
2084-5537
2544-1728
Pojawia się w:
Information Systems in Management
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
6-stroke engine: thermodynamic modelling and design for testing
Autorzy:
Nimsiriwangso, Atip
Barnes, Paul
Doustdar, Omid
Wyszynski, Miroslaw L.
Mohyeldin, Gasim Mohamed Maisara
Kowalski, Miroslaw
Powiązania:
https://bibliotekanauki.pl/articles/241771.pdf
Data publikacji:
2019
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
six-stroke engine
water injection
steam expansion
engine efficiency
dynamic gas model
Opis:
In the study AVL BOOST™ is used to perform a thermodynamic simulation of a six-stroke engine, being built by a research team based in Saudi Arabia. The six-stroke cycle consists of a standard four-stroke Otto Cycle followed by a heat recovering steam expansion cycle. Water is injected into the hot combustion chamber towards the end of the Otto expansion stroke producing steam, which is used to perform work on a piston. This process produces power using waste heat and therefore increases the overall efficiency of the engine. The Robin EY28D engine, which is a single cylinder, four-stroke, gasoline engine was used for this simulation study. The engine was modelled and converted into six-stroke engine in AVL BOOST. The results show that six-stroke engine is more efficient than four-stroke engine. In six-stroke engine, the engine power is increased by 33.1% and brake specific fuel consumption (BSFC) is decreased by approximately 16%. Where emissions are concerned, Nitrogen Oxide (NOx) emission from six-stroke engine is reduced by 80%, while the Hydrocarbon (HC) emission increases by 85% compared with the original 4-stroke. Moreover, the most efficient camshaft was found and designed according to the most efficient valve profile for this engine, which is combination of 60CA° of valve duration and 10 mm of valve lifting.
Źródło:
Journal of KONES; 2019, 26, 2; 93-106
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effective Approach for Data Aggregation in Wireless Sensor Network: a Structure Free Approach
Autorzy:
Prasad, U.
Adane, D. S.
Powiązania:
https://bibliotekanauki.pl/articles/108713.pdf
Data publikacji:
2014
Wydawca:
Społeczna Akademia Nauk w Łodzi
Tematy:
wireless sensor networks
throughput
delay
energy efficiency
protocols
event based
dynamic
Data Aggregation
Opis:
Wireless Sensor Network consist of thousands sensor node which have limited Power, Computation, Sensing and Communication capabilities. Among all operation of Sensor Node, Wireless Communication consumes most of the energy. So it is necessary to decrease the number of packets transmitted through the network. Many Sensor Node could detect similar event, which increases the overall bandwidth utilization to transmit redundant data. Here Nodes computation is cheaper than communication in terms of energy. So the technique of Data Aggregation is applied to summarize data which decreases the amount of data transmitted in the network, which in turn increases the lifetime of the network. Many Data aggregation protocols are based on a structured approach which is suitable for data collection application. But maintenance of the structure is an extra overhead and this approach is not suitable for dynamic scenario. So we propose an ad-hoc data aggregation protocol for dynamic scenario mainly event based application.
Źródło:
Journal of Applied Computer Science Methods; 2014, 6 No. 1; 55-65
1689-9636
Pojawia się w:
Journal of Applied Computer Science Methods
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Characteristics of fuel cells under static and dynamic conditions
Autorzy:
Szwajca, Filip
Berger, Andrew W.
Spalletta, Robert
Pielecha, Ireneusz
Powiązania:
https://bibliotekanauki.pl/articles/32101706.pdf
Data publikacji:
2022-12-28
Wydawca:
Sieć Badawcza Łukasiewicz - Poznański Instytut Technologiczny
Tematy:
fuel cell stack
fuel cell module
static and dynamic characteristics
fuel cell efficiency
Opis:
Modern internal combustion powertrains are the main source of propulsion for on-road and non-road vehicles. However, they are increasingly being replaced by electric or fuel cell-equipped alternative propulsion systems. The article presents a study of fuel cell characteristics operating under both static and dynamic conditions, with a 1.2 kW fuel cell set with a voltage converter and lead-acid batteries. In the conducted tests, the fuel cell stack's maximum efficiency reached 65%. Load tests (static and dynamic) have indicated higher fuel cell efficiencies when using hybrid operation with a DC/DC converter and battery.
Źródło:
Rail Vehicles/Pojazdy Szynowe; 2022, 3-4; 44-52
0138-0370
2719-9630
Pojawia się w:
Rail Vehicles/Pojazdy Szynowe
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Dylematy rozwoju energetyki w Polsce
Dilemmas of development of power industry in Poland
Autorzy:
Pyka, J.
Powiązania:
https://bibliotekanauki.pl/articles/324537.pdf
Data publikacji:
2016
Wydawca:
Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
Tematy:
energetyka krajowa
efektywność energetyczna
perspektywa dynamiczna
national power industry
energy-related efficiency
dynamic perspective
Opis:
W artykule wyeksponowano efektywność dynamiczną jako właściwą do oceny zasadności realizacji celów społeczno-gospodarczych państwa czy regionu w perspektywie strategicznej. Na podstawie przyjętej perspektywy dynamicznej oceny efektywności zaproponowano metodę badania efektywności energetycznej przez pryzmat osiągniętych korzyści.
Author pays special attention to dynamic efficiency which is considered as suitable to be a base for the assessment of relevance of accomplishment of social-economic goals of country or region in strategic perspective. Based on assumed dynamic perspective there is a proposal for the method of examination of energy-related efficiency with regard to achieved benefits.
Źródło:
Zeszyty Naukowe. Organizacja i Zarządzanie / Politechnika Śląska; 2016, 93; 425-439
1641-3466
Pojawia się w:
Zeszyty Naukowe. Organizacja i Zarządzanie / Politechnika Śląska
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Istota efektywności. Definicje i wymiary
Defining efficiency and it’s dimensions
Autorzy:
Pyszka, Adrian
Powiązania:
https://bibliotekanauki.pl/articles/591909.pdf
Data publikacji:
2015
Wydawca:
Uniwersytet Ekonomiczny w Katowicach
Tematy:
Efektywność
Podejście dynamiczne
Podejście statyczne
Skuteczność
Wydajność
Dynamic approach
Effectiveness
Efficacy
Efficiency
Static approach
Opis:
Efektywność jest pojęciem złożonym i posiadającym wiele synonimów, zarówno w literaturze polskiej, jak i zagranicznej. Artykuł jest próbą ukazania sposobów definiowania efektywności z poziomu ogólnego pojęcia, a także z perspektywy ekonomicznej i behawioralnej. Celem artykułu jest ukazanie różnorodności w definiowaniu efektywności oraz identyfikacja jej wymiarów i dynamiki, umożliwiając lepsze dopasowanie działania do oczekiwanych efektów w danej organizacji. Autor wskazuje na konieczność analizy efektywności z innej perspektywy, bardziej ewolucyjnej, zakładając że im bardziej efektywność przesuwa się z rachunku ekonomicznego działania w stronę oceny potencjału analizowanych rozwiązań, tym wyższy będzie jej poziom w dłuższym okresie czasu.
Efficiency is a complex notion and having a lot of synonyms, both in Polish and foreign literature. This article is an attempt to show the ways to define effectiveness as a general concept, as well as describing the essence of economic and behavioral perspective. This article aims to show the diversity, dimensions, and dynamics in defining the effectiveness, allowing a better match to the expected effects of activities in the organization. The author indicates the need to evaluate the effectiveness in evolutionary manner, assuming that the bigger change from economic efficiency assessment toward the evaluation of the potential of solutions, the higher will be the level in the long term.
Źródło:
Studia Ekonomiczne; 2015, 230; 13-25
2083-8611
Pojawia się w:
Studia Ekonomiczne
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Parallel anisotropic mesh refinement with dynamic load balancing for transonic flow simulations
Autorzy:
Gepner, S.
Majewski, J.
Rokicki, J.
Powiązania:
https://bibliotekanauki.pl/articles/202281.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
parallel CFD
adaptation
dynamic load balancing
mesh refinement
parallel efficiency
CFD
dostosowanie
dynamiczne obciążenia
wydajność
modele siatkowe
Opis:
The present paper discusses an effective adaptive methods suited for use in parallel environment. An in-house, parallel flow solver based on the residual distribution method is used for the solution of flow problems. Simulation is parallelized based on the domain decomposition approach. Adaptive changes to the mesh are achieved by two distinctive techniques. Mesh refinement is performed by dividing element edges and a subsequent application of pre defined splitting templates. Mesh regularization and derefinement is achieved through topology conserving node movement (r-adaptivity). Parallel implementations of an adaptive use the dynamic load balancing technique.
Źródło:
Bulletin of the Polish Academy of Sciences. Technical Sciences; 2017, 65, 2; 195-207
0239-7528
Pojawia się w:
Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The concept of determining the ship’s route based on the capability plots
Autorzy:
Wnorowski, J.
Łebkowski, A.
Powiązania:
https://bibliotekanauki.pl/articles/24201401.pdf
Data publikacji:
2023
Wydawca:
Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:
capability plots
searching algorithms
graph searching
pathfinding
Energy Efficiency
dynamic positioning
anchor-based positioning systems
thrusters force allocation
Opis:
Every year, new vessels equipped with dynamic positioning (DP) systems are built in shipyards around the world. Due to the increasing number of offshore vessels, a client hiring a vessel should analyse the vessel's positioning capability charts to determine which water areas the vessel is designed for. These charts are represented as polar diagrams. In the centre of the chart is a shape symbolising the ship's body, and the values on the chart represent the maximum wind speed that can affect the ship at a given angle, at which the vessel will maintain its position. Vessel capability charts can also be used by the crew during thrusters failures to determine at what angle to the wind direction the vessel should stand to minimise the impact of wind forces. Analyses that determine a vessel's ability to keep position can be performed by classification societies or other companies with approval from classification societies. The article presents the concept of a pathfinding algorithm to determines the route of the ship’s passage with minimal energy consumption. The algorithm uses the information about environmental forces affecting the ship and information about thrust allocation obtained from Capability Plots.
Źródło:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2023, 17, 1; 193--197
2083-6473
2083-6481
Pojawia się w:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:
Biblioteka Nauki
Artykuł

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