with the increasing population and the need for more food, as well as with the development of science and technology, human approach to unnatural and often chemical inputs to increase agricultural production has been a great expansion and problems such as increased cancers, chronic diseases has created environmental pollution. implementation of organic organic is a solution to these problems . ...

this study attempts to investigate the effect of peers’ revision in comparison to that of the teacher, and whether peers’ comments and teachers’ comments facilitate students’ revision? if yes, which one is more effective? also attempts have been made to see which aspects of language are more highlighted by peers versus teachers when commenting. besides, it is investigating the student’s attitud...

abbas mirza sent two iranian students to england in 1811, to study medicine and painting. from this time, the process of students' dispatch to europe was continued. after one century, an iranian student named seyyed hossein motarjem nezam madani went to america. he was the first iranian student that dispatched there. of course, mirza mohammad saiyah is recog­nized as the first one who went...

the main objective in sampling is to select a sample from a population in order to estimate some unknown population parameter, usually a total or a mean of some interesting variable. a simple way to take a sample of size n is to let all the possible samples have the same probability of being selected. this is called simple random sampling and then all units have the same probability of being ch...

abstract this research is about a longitudinal case study of english morpheme acquisition by a persian speaking child l2 learner of english (2 .9-3).the goal of this research has been discovery of the child ‘s ability in acquiring of english morphemes in a persian context while only one person (the child’ s father)has been talking to her.this child has also been exposed to english languag...

در آن حوزه ای که امروزه هنر دوران قاجار دانسته می شود، یک بخش مهم شامل تجربیات پیچیده ای بود که به بازنمایی تصویری شاه و صاحب منصبان بستگی داشت. این سلسله از کردارهای معطوف به تصویر در آن روزگار اهمیتی ویژه داشت، اما طی همین زمان تغییرات بنیادینی را نیز از سر گذراند. مسأله این پژوهش فراهم کردن روایتی معتبر از این جنبه فرهنگ بصری در دوران قاجار است، به نحوی که پیوندهای سیاسی آن با بستر تاریخی وی...

we have devided the thesis in to five chapters. the first recollects facts from purely algebraic theory of jordan algebras and also basic properties of jb and jb* - algebras which are needed in the sequel. in the second chapter we extend to jb* - algebras, a classical result due to cleveland [8]. this result shows shows the weakness of jb* - norm topology on a jb* - algebera. in chapter three, ...

Royal Portraiture is one of the last Iranian miniature styles which more or less can be considered a Synthesis Style of Iranian and European elements. This style was inspired by Westernization, but underwent important changes during the Qajar era. In this research, one tries to analyze and interpret one of its ruptures that occurred in the era of Mohammad Shah. The main issue of the present pro...