نتایج جستجو برای: cross efficiency evaluation

تعداد نتایج: 1634952  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه ارومیه 1377

the methods which are used to analyze microstrip antennas, are divited into three categories: empirical methods, semi-empirical methods and full-wave analysis. empirical and semi-empirical methods are generally based on some fundamental simplifying assumptions about quality of surface current distribution and substrate thickness. thses simplificatioms cause low accuracy in field evaluation. ful...

2013
Shulei Sun

This paper firstly reviews the cross efficiency evaluation method which is an extension tool of data envelopment analysis (DEA), then we describe the main shortcomings when the ultimate average cross efficiency scores are used to evaluate and rank the decision making units (DMUs). Subsequently, we eliminate the assumption of average and utilize the stationary distribution of Markov matrix to de...

2013
Ruimin Ma Lifei Yao Maozhu Jin Peiyu Ren

As the most important responsibility of purchasing management, the problem of supplier evaluation and selection has always received a great deal of attention from practitioners and researchers. This management decision is a challenge due to the complexity and various criteria involved. Many methods based on data envelopment analysis(DEA) emerged, especially the cross efficiency. But it exists s...

پایان نامه :دانشگاه آزاد اسلامی - دانشگاه آزاد اسلامی واحد تهران مرکزی - دانشکده مدیریت 1392

data envelopment analysis (dea) is a powerful tool for measuring relative efficiency of organizational units referred to as decision making units (dmus). in most cases dmus have network structures with internal linking activities. traditional dea models, however, consider dmus as black boxes with no regard to their linking activities and therefore do not provide decision makers with the reasons...

Journal: :ژورنال بین المللی پژوهش عملیاتی 0
a. r. amirteimoori k. shahroodi f. shaker mahmoodkiani

energy, due to its increasing usage in various broad areas has been maintained as a vital factor in economic growth and development of societies. meanwhile, natural gas is considered as one of the most important energy sources. therefore, the efficiency and the productivity of the gas companies are crucial to be assessed. numerous examples from industrial multistage processes including internal...

Journal: :Omega 2021

This paper introduces a series of new concepts under the name Economic Cross-Efficiency, which is rendered operational through Data Envelopment Analysis (DEA) techniques. To achieve this goal, from theoretical perspective, we connect two key topics in efficiency literature that have been unrelated until now: economic and cross-efficiency. In particular, it shown that, input (output) homothetici...

Journal: :journal of linear and topological algebra (jlta) 2015
saber saati n. nayebi

data envelopment analysis (dea) is a method to evaluate the relative efficiency of decision making units (dmus). in this method, the issue has always been to determine a set of weights for each dmu which often caused many problems. since the dea models also have the multi-objective linear programming (molp) problems nature, a rational relationship can be established between molp and dea problem...

Background and objectives: Managers will be able to allocate resources optimally using performance evaluation data, specifically, efficiency evaluation of organizations. An efficiency evaluation of hospitals can be provided by determining the optimal scales for each hospital, to which optimal allocation of resources will be possible. Therefore, the present study aimed to evalua...

2004
Ram D. Gopal

Allocative inefficiencies in online auction markets can result in the loss of revenues for sellers. It can also cause frustration for buyers who fail to win an item despite placing bids higher than other winners. The main contention of this work is that allocative inefficiencies present arbitrage opportunities, though not strictly in the traditional financial market sense, where risk-free profi...

Journal: :International Journal of Database Theory and Application 2015

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