Revenue efficiency

دسترسی آزاد مقاله

1 - محاسبه بردار قیمت خروجی با به کارگیری برنامه‌ریزی خطی معکوس: روشی جدید درDEA با ساختاردو مرحله‌ای
سرور صدری محسن رستمی مال خلیفه

در جهان امروز که تمام مسائل روزمره بر پایهی اقتصاد قرار گرفته است. علوم علمی و نظری بدون تردید با تواناییها و قابلیتهای خود، در زمینه اقتصاد فعالیت میکنند. تحلیل پوششی دادهها (DEA) نیز به عنوان ابزاری ریاضی در اختیار علوم اقتصادی قرار گرفته تا ب چکیده کامل

در جهان امروز که تمام مسائل روزمره بر پایهی اقتصاد قرار گرفته است. علوم علمی و نظری بدون تردید با تواناییها و قابلیتهای خود، در زمینه اقتصاد فعالیت میکنند. تحلیل پوششی دادهها (DEA) نیز به عنوان ابزاری ریاضی در اختیار علوم اقتصادی قرار گرفته تا بتواند با بررسی هزینهها، قیمتها و درآمدها به بررسی عملکرد واحدهای اقتصادی بپردازد. تحلیل پوششی دادهها یک تکنیک برنامهریزی خطی برای اندازهگیری کارایی نسبی واحدهای تصمیمگیری (DMU) بر اساس دادههای ورودیها و خروجیها است. یکی از کاربردهای تحلیل پوششی دادهها، محاسبه کارایی درآمد واحدها است. روشهای محاسبه کارایی درآمد در تحلیل پوششی دادهها عموماً برای بدست آوردن بیشترین درآمد حاصل از فروش خروجیها ارائه شده است. این روشها در ارزیابی هر سیستمی از جمله سیستمهای تولید دو مرحلهای به دلیل بیتوجهی به ساختار درونی واحدها و نادیده گرفتن محصولات میانی آنها به اندازه کافی کارآمد نیستند. لذا در این مقاله ضمن معرفی برنامهریزی خطی معکوس در تحلیل پوششی دادهها و بکارگیری آن در محاسبه کارایی درآمد، روش جدیدی ارائه میگردد که با در نظر گرفتن ساختار شبکهای واحدها، توانایی تعیین قیمتهای بهینه و هزینههای مناسب جهت کارا شدن واحد مورد نظر را دارد. مثالهای عددی ارائه شده برتری روشهای پیشنهادی را نسبت به روشهای سنتی تحلیل پوششی دادهها نشان داده است. پرونده مقاله

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2 - Allocation efficiency in network DEA
S. Banihashemi G. Tohidi

The present study is an attempt towards remodeling cost, revenue and profit relationship within the network process. The previous models of Data Envelopment Analysis (DEA) have been too general in their scope and focused on the input and the output within a black box چکیده کامل

The present study is an attempt towards remodeling cost, revenue and profit relationship within the network process. The previous models of Data Envelopment Analysis (DEA) have been too general in their scope and focused on the input and the output within a black box system, therefore they have not been able to measure various phases simultaneously within a network system. By using these models internal linking activities are neglected. A slacks-based network DEA model is dealt with intermediate products (Tone,Tsutsui). In this development, each input and output can use situations where unit price and unit cost information are available. In this paper we introduce models of cost, revenue and profit efficiency in network DEA. These models are illustrated by numerical examples and finally results of Constant Returns to Scale (CRS) are obtained. The findings could be used in minimizing the costs and maximizing the benefits in various organizations, public services, factories, and public and private sector companies. پرونده مقاله

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3 - The Most Revenue Efficiency with Price Uncertainty
Samira Salehpour Nazila Aghayi

In this paper, a new revenue efficiency data envelopment analysis (RE-DEA) approach is considered for finding the most revenue efficient unit with price uncertainty in both optimistic and pessimistic perspectives. The optimistic and pessimistic perspectives use efficien چکیده کامل

In this paper, a new revenue efficiency data envelopment analysis (RE-DEA) approach is considered for finding the most revenue efficient unit with price uncertainty in both optimistic and pessimistic perspectives. The optimistic and pessimistic perspectives use efficient frontier and inefficient frontier, respectively. An integrated model is introduced to find decision making units (DMUs) that can be a candidate for most revenue efficient unit, in both optimistic and pessimistic points. Consequently, the revenue efficiency of all DMUs is calculated with by solving one model. Then a mix integer programming (MIP) model is proposed for finding the most revenue efficient DMU with common set of weights. The proposed model ensures that just one unit has been revenue efficiency. To illustrate the applicability of the new approach, the model is utilized for data from 21 medical centers in Taiwan. پرونده مقاله

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4 - Provide a Model for Reallocating Resources in the Structure of Pasargadae Bank Branches With Emphasis on Efficiency and Productivity
M. Bakhtiari Mohsen Rostamy-Malkhalifeh

Data envelopment analysis (DEA) creates many opportunities for collaboration between analyst and decision-maker. There are, however, situations in which all of the decision-making units (DMUs) fall under the umbrella of a centralized decision maker that oversees them. M چکیده کامل

Data envelopment analysis (DEA) creates many opportunities for collaboration between analyst and decision-maker. There are, however, situations in which all of the decision-making units (DMUs) fall under the umbrella of a centralized decision maker that oversees them. Many organizations such as bank branches, chain stores, … can do this. This centralized decision maker unit expect that resource allocation and revenue efficiency be in a way that DMUs not separately but in a group and simultaneously projected onto the efficiency frontier; as a result, it won’t be possible based on current DEA models. Therefore, centralized resource allocation or institutional allocation was formulated. There are situations in which centralized method presented in a central decision maker unit to allocate resources based on revenue efficiency. However, in reality value and rate are not often observed for all of the undesirable and desirable output units, which poses a problem in determining the revenue efficiency. Therefore, the best solution in these cases is to divide the outputs into two categories of known and unknown prices, which will be a more valid criterion for determining the revenue efficiency. In this paper, based on these methods, the revenue efficiency in branches of Pasargadae Bank will be analyzed and a comprehensive ranking will be made on these branches. پرونده مقاله

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5 - Revenue - Profit Measurement in Data Envelopment Analysis with Dynamic Network Structures: A Relational Model
S. Seyedboveir S. Kordrostami B. Daneshian

The correlated models are introduced in this article regarding revenue efficiency and profit efficiency in dynamic network production systems. The proposed models are not only applicable in measuring efficiency of divisional, periodical and overall efficiencies, but rec چکیده کامل

The correlated models are introduced in this article regarding revenue efficiency and profit efficiency in dynamic network production systems. The proposed models are not only applicable in measuring efficiency of divisional, periodical and overall efficiencies, but recognizing the exact sources of inefficiency with respect to revenue and profit efficiencies. Two numerical examples, consisting of twoperiods and , are presented to illustrate these proposed models. پرونده مقاله

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6 - Interval Economic Efficiency Measures in Data Envelopment Analysis
Amin Mostafaee

One of the most essential pieces of information given by DEA models is the cost efficiency of decision-making units (DMUs). Cost efficiency (CE) is defined as the ratio of minimum costs to current costs and in fact, evaluates the ability to produce current outputs at a چکیده کامل

One of the most essential pieces of information given by DEA models is the cost efficiency of decision-making units (DMUs). Cost efficiency (CE) is defined as the ratio of minimum costs to current costs and in fact, evaluates the ability to produce current outputs at a minimal cost. While the traditional cost efficiency models require the values for all data to be known exactly, in real-world problems the exact values of input prices are unknown, and only the maximum and minimum bounds of input prices can be estimated for each DMU. Hence, the main aim of the current paper is to develop a pair of two-level mathematical programming problems, whose optimal values represent the optimistic and pessimistic cost efficiency measures. The two-level nonlinear program for the optimistic cost efficiency measure is then transformed into a one-level linear program. In this regard, we provide an explicit formula for measuring the pessimistic CE measure. پرونده مقاله

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7 - Imprecise Revenue Efficiency under Productivity Change
Mohsen Rostamy-Malkhalifeh

Traditional data envelopment analysis (DEA) models evaluate the performance of decision-making units (DMUs) with the exact data and do not assume evaluation in the condition that the environment is uncertain. When some data are unknown, such as interval data, the DEA mo چکیده کامل

Traditional data envelopment analysis (DEA) models evaluate the performance of decision-making units (DMUs) with the exact data and do not assume evaluation in the condition that the environment is uncertain. When some data are unknown, such as interval data, the DEA model is called imprecise DEA (IDEA). In this paper, we develop a new Malmquist productivity index(MPI) for dealing with interval data in DEA. Then, an approach for measuring the Malmquist productivity index using revenue efficiency is extended, too. The capabilities of the presented approach are shown by means of an example. پرونده مقاله

فهرست مقالات Revenue efficiency

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