Dea by sequential exclusion of alternatives in heterogeneous samples
Data Envelopment Analysis is a well-known non-parametric technique of efficiency eval- uation which is actively used in many economic applications. However, DEA is not very well applicable when a sample consists of firms operating under drastically different con- ditions. We offer a new method of efficiency estimation in heterogeneous samples based on a sequential exclusion of alternatives and standard DEA approach. We show a connec- tion between efficiency scores obtained via standard DEA model and the ones obtained via our algorithm. We also illustrate our model by evaluating 28 Russian universities and compare the results obtained by two techniques.
In the present paper we have hypothesized an explanation for the fact that the evaluation
of the social impact of law is modeled predominantly by the economic efficiency concept.
Considering the early stages of the concept’s development, we try to make it more
intelligible to the European lawyers.
Electron bunching processes in a carcinotrode (backward_wave oscillator with self_modulation of electron emission) operating in the high_efficiency regime determined previously are investigated. The possibility of obtaining an efficiency of about 80% is explained from the physical viewpoint.
There is by now a large literature arguing that auctions with a variety of after-market interactions may not yield an efficient allocation of the objects for sale, especially when the bidders impose strong negative externalities upon each other. In this note, we argue that these inefficiencies can be avoided by asking bidders prior to the auction to submit any publicly observable payment they would like to make. These payments, so-called flexible entry fees, do not affect the allocation decision of the auctioneer. We show that auctions with flexible entry fees have a fully revealing equilibrium where bidders signal their type before the auction itself takes place.
The main purpose of this monograph is to identify the key factors of risk man- agement efficiency of firm, whose management is able to increase the investment attractiveness of the business in general, as well as the formation of an effective or- ganizational risk management model that allows, on the one hand - to provide reliable protection for companies against unexpected losses, on the other hand - to make a risk management tool for the creation of corporate value. This monograph presents the organization of risk management in accordance with the latest regulatory require- ments. In the monograph authors provide a developed methods for evaluating the effectiveness of existing mechanisms of risk management, based on a representative theoretical review of the scientific literature of leading researchers in the field of risk management and internal control. In addition, an algorithm for evaluating the econom- ic and investment efficiency of the risk management is given, that takes into account the existing methods of performance evaluation, as well as recommendations on the organization of internal compliance as a tool ensuring the consistency of individual and corporate interests of the company. Most of the conclusions and positions pre- sented in the book, confirmed by empirical calculations on the example of Russian and international companies.
The book contains the results of studies to assess the effectiveness of corporate risk management. This monograph is intended for students, teachers and scientists, researchers, and professionals operating in the field of risk management.