why some learners are willing to communicate in english, concurrently others are not, has been an intensive investigation in l2 education. willingness to communicate (wtc) proposed as initiating to communicate while given a choice has recently played a crucial role in l2 learning. it was hypothesized that wtc would be associated with language learning orientations (llos) as well as social suppo...

data envelopment analysis (dea) is a powerful tool for measuring relative efficiency of organizational units referred to as decision making units (dmus). in most cases dmus have network structures with internal linking activities. traditional dea models, however, consider dmus as black boxes with no regard to their linking activities and therefore do not provide decision makers with the reasons...

هدف از انجام این پژوهش بررسی تاثیر ابعاد مختلف مسئولیت اجتماعی شرکتی بر رضایتمندی مشتری و شهرت شرکت در صنعت خودرو می­باشد. در این پژوهش، پژوهشگر در پی آن است که با بررسی تمامی جوانب مسئولیت اجتماعی شرکتی به عنوان بخشی از اقدامات بازاریابی اجتماعی با توجه به شرایط و بحران اقتصادی کنونی مهم­ترین ابعاد مسئولیت اجتماعی شرکتی را که اهمیت و ضرورت بیشتری از سایر ابعاد دارند را تعیین نماید. به همین دلی...

bekenstein and hawking by introducing temperature and every black hole has entropy and using the first law of thermodynamic for black holes showed that this entropy changes with the event horizon surface. bekenstein and hawking entropy equation is valid for the black holes obeying einstein general relativity theory. however, from one side einstein relativity in some cases fails to explain expe...

the construct of self-efficacy has received increasing attention in research over the past two decades. many studies have been carried out 1.3 significance of the study this study has pedagogical implications since improving students’ self- efficacy and autonomy is important for promoting actual performance on classroom academic tasks. in academic settings, it has been shown that self-effi...

the methods which are used to analyze microstrip antennas, are divited into three categories: empirical methods, semi-empirical methods and full-wave analysis. empirical and semi-empirical methods are generally based on some fundamental simplifying assumptions about quality of surface current distribution and substrate thickness. thses simplificatioms cause low accuracy in field evaluation. ful...