یکی از مسایل مهم در تصمیم گیری‌های مدیران انتخاب تامین کننده و ارزیابی زنجیره‌های تامین می‌باشد. بنابراین تاکنون مطالعات متعددی در زمینه انتخاب تامین کننده و ارزیابی آنها به وسیله تحلیل پوششی داده‌ها انجام شده است. ولی در مطالعاتی که تاکنون انجام گرفته است بر انتخاب تامین کننده‌ها و ارزیابی آنها تمرکز شده است. و روشی برای تعیین تعداد تامین کننده‌ها , , و نوع انها به صورت هم زمان در یک زنجیره تامین ارایه نشده است. بنابراین در این مقاله در ابتدا مفهوم کارایی سود برای زنجیره‌های تامین را بیان می‌کنیم و با استفاده از مدل پیشنهادی در این مقاله به طور همزمان تعداد و نوع تامین کننده‌ها در یک زنجیره تامین مشخص می‌گردد. در نهایت 10 زنجیره تامین در صنایع غذایی مورد بررسی قرار گرفت و کارایی سود هریک از آنها با استفاده از مدل پیشنهادی در این مقاله مورد محاسبه قرار گرفت و سپس تعداد و نوع تامین کننده ها در هر زنجیره تعیین شد. پرونده مقاله

This study intends to expand a set of proper performance evaluation indices which embraces strategies for sustaining top performance using SWOT analysis inside a balanced scorecard (BSC) outline for the large commercial bank branches in IRAN by operating a fuzzy Data Envelopment Analysis (FDEA). Through literature reviews and the banks’ experts and managers opinions and who have real practical experiences in the bank strategy planning, satisfactory performance evaluation indices have been selected throughout SWOT analysis. Then, utilizing the decision making trial and evaluation laboratory (DEMATEL) and analytic network process (ANP), respectively, further establishes the causality between the four BSC perspectives as well as the relative weights between evaluation indices. An empirical grading of the bank strategies is exemplified by applying fuzzy data envelopment analysis. The DEA model ranks the DMUs based on mathematical and scientific logic. Fuzzy DEA technique is utilized for ranking the branches. پرونده مقاله

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 economy. Therefore, evaluating and improving the efficiency of the transportation industry, especially air transportation, as a fast and expensive method, is of particular importance in today's world. The purpose of this article was to evaluate and improve the efficiency of Iranian airlines, that for this purpose, the Data Envelopment Analysis (DEA) Method, as the most popular method of evaluating efficiency, has been selected. In recent years, network envelopment data analysis models have been developed, taking into account various parts of the organization's activity in computing efficiency. Also, undesirable outputs have been considered as the reality of the outside world in these models. In this article, the Slack-Based Measure (SBM) model as one of the newest data envelopment analysis models has been considered that simultaneously sought to increase outputs and reduce inputs, in a network form and associated with undesirable output as the basis of efficiency computations. The efficiency of 14 Iranian airlines was evaluated using the mentioned model. پرونده مقاله

Although DEA is a powerful method in evaluating DMUs, it does have some limitations. One of the limitations of this method is the result of the evaluation is based on previously data and the results are not proper for forecasting the future changes. So For this purpose, we design feedback loops for forecasting inputs and outputs through system dynamics and simulation. Then we use DEA model to forecast the efficiency. پرونده مقاله