This paper investigates cost and profit efficiency of German hospitals. More specifically, it deals with the question how hospital efficiency varies with ownership, patient structure, and other exogenous factors, which are neither inputs nor outputs of the production process. We conduct a Stochastic Frontier Analysis (SFA) on a multifaceted administrative German dataset combined with the balanc...

The term "smart grid" generally refers to a next-generation power grid in which the generation, transmission, distribution, and management of electricity are upgraded and automated by incorporating advanced computing and communication technologies for improving the efficiency, reliability, economics, and safety of the grid. Loosely speaking, a smart grid is composed of a power grid and a two-wa...

This paper examines conditions under which one firm’s product-line expansion can cause all firms to be more profitable in horizontally-differentiated markets. While one may expect that a firm’s profits would decrease when a competitor expands its product line because the firm loses some sales to the new product, this intuition is incomplete because a competitor’s product-line expansion can also...

Traditional poultry production has changed to a considerable industry after few decades. Now, poultry industry is one of the main sectors to obtain the required protein for human consumption. Prediction of the weight and number of eggs according to economic traits can improve the efficiency of production and the profit of producers. In present study, the weight and number of eggs in Mazandaran ...

DEA as an effective approach to evaluate the relative efficiency of DMUs, recently applied in many production and operation systems. This paper proposed a new k-stage DEA based MOLP model for target setting in the serial network structures, considering undesirable outputs. Since the proposed model takes the size of DMUs into account, the new idea ensures the possibility of the results. The resu...

This paper considers hub network design problems with profits in which the simultaneous optimization of the collected profit, setup cost of the hub network and transportation cost are considered. An exact algorithmic framework is proposed for two variants of this class of problems, where a sophisticated Lagrangean function that exploits the structure of the problems is used to efficiently obtai...

• Efficiency of operational processes with undesirable outputs containing series and parallel processes. Developing a network Slacks-Based DEA model to include components. A Slack-Based data envelopment analysis for measuring efficiency banks. An assessment Chinese commercial banks considering both This paper proposes new slacks-based measure (SBM-NDEA) evaluate the performance production that ...

This paper analyzes Pareto optimal non-linear taxation of profits and labor income in a private information economy with endogenous firm formation. Individuals differ in both their skill and their cost of setting up a firm, and choose between becoming workers and entrepreneurs. I show that a tax system in which entrepreneurial profits and labor income must be subject to the same non-linear tax ...