نتایج جستجو برای: including a model with all variables

تعداد نتایج: 15901867  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت مدرس - دانشکده علوم انسانی 1390

this study investigated the functions, types and frequencies of code switching in the teachers and students discourse in elt classrooms. to this end, the participants of this study including two groups of teachers and students were selected. the first group of participants were two efl teachers teaching general english courses (at two different levels of proficiency) in an institutional program...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شیراز - دانشکده علوم 1392

gol-e-gohar iron ore mine of sirjan in southern part of iran is a large open pit that operates below the groundwater table and during mining operation, dewatering is required to prevent operation processes from flooding. current operation is going on by digging wells in or out of the pit and pumping to prevent flooding. as a result of the former dewatering operation a vast deep cone of depressi...

Journal: Money and Economy 2014
Afshari Zahra, Maryam Faraji,

Oil price shocks are the major source of economic instability in oil exporting developing countries, including Iran. In this paper a Multi Sector Dynamic Stochastic General Equilibrium model, with emphasis on optimization of oil sector as a producing sector is designed. Furthermore, an optimizing import sector is introduced into the model by considering the price rigidity in imported goods as a...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه پیام نور - دانشگاه پیام نور استان تهران - دانشکده اقتصاد و علوم اجتماعی 1389

چکیده: پژوهش حاضر به بررسی تطبیقی اعتماد اجتماعی در بین دبیران زن و مرد مقطع راهنمایی شهر ایلام می پردازد. امروزه در جوامع شاهد گسترش ارتباطات هستیم و با توجه به این که دامنه کنش های اجتماعی از حد روابط با آشنایان و دوستان فراتر رفته و به تعامل با کنشگران غربیه و نا آشنا گسترش یافته است، لزوم وجود اعتماد، بیش از پیش احساس می شود. اما با توجه به نقش دبیران در نهادهای آموزشی، در انتقال ارزش ها و...

Journal: :محیط شناسی 0
حسین نوروزی کارشناسی ارشد هیدروژئولوژی، دانشکدة علوم طبیعی، دانشگاه تبریز اصغر اصغری مقدم استاد هیدروژئولوژی، دانشکدة علوم طبیعی، دانشگاه تبریز عطاالله ندیری استادیار هیدروژئولوژی، دانشکدة علوم طبیعی، دانشگاه تبریز،

determining vulnerable areas of malekan plain aquifer for nitrate, using random forest method introduction:management of groundwater, especially in dry regions such as iran, is essential and this concern becomes further with development of agriculture, industry, population growth and climate changes, that affecting the quality and quantity of groundwater resources. hence, groundwater contaminat...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه علامه طباطبایی - دانشکده علوم اجتماعی 1393

the present study is paid to the evaluation of the welfare program of the unemployment insurance in iran. the main purpose which was the main reason for performing this thesis, was the unemployment insurance plan’s challenges in iran such as financial problems of this plan, prolongation of the credit receipt for some insured people, unemployment slow exiting from the unemployment insurance fund...

Journal: :acta medica iranica 0
amin torabipour department of health services management, school of health, ahvaz jundishapur university of medical sciences, ahvaz, iran. and department of health economics & management, school of public health, tehran university of medical sciences, tehran, iran. mohammad arab department of health economics & management, school of public health, tehran university of medical sciences, tehran, iran. hojjat zeraati department of epidemiology & biostatistics, school of public health, tehran university of medical sciences, tehran, iranq. arash rashidian department of health economics & management, school of public health, tehran university of medical sciences, tehran, iran. ali akbari sari department of health economics & management, school of public health, tehran university of medical sciences, tehran, iran. mahmuod reza sarzaiem department of cardiac surgery, school of medicine, tehran university of medical sciences, tehran, iran.

length of hospital stay (los) is a key indicator for hospital management. reducing hospital stay is a priority for all health systems. we aimed to determine the length of hospital stay following coronary artery bypass surgery (cabg) based on its clinical and non-clinical factors. a cross-sectional study of 649 consecutive patients who underwent coronary artery bypass graft surgery was conducted...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه ارومیه 1377

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...

پایان نامه :0 1374

having conducted the experiment and analysed the data, the researcher computed the groups mean scores and variances for the test relating to the research question. as the final atep, a t-test was conodonted for the hypothesis. as noted earlier, the significance level was determined at .05 and .01 respectively. the observed t-value was higher than the critical t-value at. 5 and .01 levels. conse...

پایان نامه :دانشگاه تربیت معلم - تهران - دانشکده روانشناسی و علوم تربیتی 1391

the purpose of this study was the relationship between problem – solvi ability with fdi cognitive style of students.the research method was correlation method. for data analysis pearson test was used. statistical society in this research was all the students of alligoodarz city in 1391-92 year.to sampling of statiscal population was used sampling multi-stage random the size of sample selected 2...

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