Congestion is a wasteful stage of the production process where outputs are reduced due to excessive amount of inputs. There are several approaches in data envelopment analysis (DEA) literatures to treat congestion. The concept of strong and weak congestion first developed by Tone and Sahoo [Tone, K., Sahoo, B.K., 2004. Degree of scale economies and congestion: A unified DEA approach. European J...

Automotive purchasing power is an important indicator of a country's economic development, recently the domestic car-sale market are shrinking .In additional,it face more competitive envorinment, It is essential to enhance the competitive strength in domestic auto industry ,and developing the more effective enterprise resource allocation method. In this study, based on a car dealer in Taiwan th...

for efficiency evaluation of some of the decision making units that have uncertain information, rough data envelopment analysis technique is used, which is derived from rough set theorem and data envelopment analysis (dea). in some situations rough data alter nonradially. to this end, this paper proposes additive rough–dea model and illustrates the proposed model by a numerical example.

This study uses the Data Envelopment Analysis (DEA) slack-based model (SBM) and Malmquist Productivity Index (MPI) to evaluate energy efficiency based on CO2 emissions in 42 countries belonging 6 continents. First, data envelopment analysis was employed calculate scores for individually continent basis then index used examine improvement. The period chosen 2011-2020. results of this showed that...

abstract in the past few years, diversification has turned into a highly controversial issue amongst numerous managers in almost each and every business. it is contended by many that diversification is vitally important and highly effective especially when it comes to evaluating the financial performance. there are several studies about the relationship between diversification and financial per...

Measuring and improving the efficiency of organizations, as one of the most important parts of the organization's performance evaluation and a tool to control it, is a contemplative issue in order to survive and advance in the area of competition. Transportation is also a key element in the growth and development of countries that creates an unbreakable link among the various sections of the ec...

This paper considers allocation rules. First, we demonstrate that costs allocated by the Aumann-Shapley and the Friedman-Moulin cost allocation rules are easy to determine in practice using convex envelopment of registered cost data and parametric programming. Second, from the linear programming problems involved it becomes clear that the allocation rules, technically speaking, allocate the non...