Cost efficiency evaluation is a very important and applicable issue in Data Envelopment ‎Analysis (DEA). In this paper, the classical cost efficiency model in which all the input ‎prices are known and fixed for each decision making unit is developed via undesirable ‎outputs with the weak disposability axiom. The proposed model is a nonlinear model ‎under the variable returns to scale condition,...

The purpose of this paper is to evaluate the returns to scale of the Tehran Stock Exchange based on new models in data envelopment analysis. Using this assessment, it is possible to judge the application of contradictory or expansion policies in stock companies. To this end, there is a need for models in the data envelopment analysis that can assess the left and right returns to scales of the d...

this study aimed at examining the effects of iranian efl learners’ anxiety, ambiguity tolerance, and gender on their preferences for corrective feedback (cf, henceforth). the effects were sought with regard to the necessity, frequency, and timing of cf, types of errors that need to be treated, types of cf, and choice of correctors. seventy-five iranian efl students, twenty-eight males and forty...

درحال حاضر مفهوم اقتصادی تراکم، مورد بحث بسیاری از پژوهشگران درعلم تحلیل پوششی داده ها واقع شده است. آنها برای پی بردن به رابطه تئوری بین بازده به مقیاس و مفهوم تراکم، تلاش بسیاری انجام داده اند زیرا این دو مفهوم اقتصادی دقیقا به هم مربوط هستند.تون وساهو در مقاله ای با عنوان محاسبه درجه مقیاس کشسانی و تراکم در تحلیل پوششی داده ها به ارتباط تئوری بین تراکم و بازده به مقیاس پرداختند.

abstract: the present study was undertaken to investigate whether 1) there is any significant correlation between iranian efl/eap learners’ l2 writing proficiency and their willingness to communicate, 2) there is any significant difference between efl and eap learners in terms of willingness to communicate, 3) there is any significant difference in wtc of iranian efl/eap learners with 1- nati...

the major purpose of this study was to develop the translation teacher competency test (ttct) and examine its construct and predictive validity. the present study was conducted in two phases: a qualitative phase as well as a quantitative phase. in the first phase of the study, the author attempted to find out the major areas of competency required for an academic translation teacher. the second...

monumental changes occurring on a daily basis have altered the world into a global village of expanding technology and shrinking geography in which preparing language learners for intercultural communication seems to be a sine qua non for modern language education. employing a cross-sectional design in its first phase, this study investigated the intercultural sensitivity and language proficien...