نتایج جستجو برای: except for the negative control group

تعداد نتایج: 18476003  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت مدرس - دانشکده علوم انسانی 1389

there are two major theories of measurement in psychometrics: classical test theory (ctt) and item-response theory (irt). despite its widespread and long use, ctt has a number of shortcomings, which make it problematic to be used for practical and theoretical purposes. irt tries to solve these shortcomings, and provide better and more dependable answers. one of the applications of irt is the as...

Journal: :iranian endodontic journal 0
ali reza farhad department of endodontics, torabinejad research center, dental school, isfahan university of medical sciences, isfahan, iran behnaz barekatain department of endodontics, torabinejad research center, dental school, isfahan university of medical sciences, isfahan, iran ali reza koushki general practitioner, isfahan, iran

introduction: the purpose of this in vitro study was to assess the apical microleakage of ah26 sealer when three different root canal irrigant regimens were used. materials and methods: eighty single-rooted human teeth were randomly divided into three experimental (n=20) and two control groups (n=10). naocl was used as irrigant during instrumentation, and apical patency was ensured in all teeth...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه زنجان - دانشکده ادبیات و علوم انسانی 1392

abstract the present study investigated the effects of task types and involvement load hypothesis on incidental learning of 10 target words (tws) in junior high schools (jhss) in givi, ardabil. the tasks deployed in this study were two input-based tasks (reading plus dictionary use with an involvement index of 3, and reading plus gap-fill task with an involvement index of 2), and one output-ba...

Journal: :journal of dental school, shahid beheshti university of medical sciences 0
اسحاق علی صابری eshagh-ali saberi dental school, zahedan university of medical sciences, tehran-iran.دانشکده دندانپزشکی، دانشگاه علوم پزشکی زاهدان فریدون سرگلزائی اول fereydoon sargolzaei aval medical school, zahedan university of medical sciences, zahedan-iran.دانشکده پزشکی، دانشگاه علوم پزشکی زاهدان سید محسن حسینی گوشه mohsen hosseini goosheh dental school, ahvaz university of medical sciences, ahvaz-iran.دانشکده دندانپزشکی. دانشگاه علوم پزشکی اهواز. مریم قمری maryam ghamari dental school, zahedan university of medical sciences, tehran-iran.دانشکده دندانپزشکی، دانشگاه علوم پزشکی زاهدان

objective: furcal perforation is an undesirable complication that may occur during root canal therapy and seriously compromises the prognosis of endodontic treatment. the prognosis of furcal perforation repair depends on the prevention of bacterial infection of the perforation site. thus, use of a biocompatible material for complete sealing of the perforation site is critically important. this ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه کاشان 1388

textbooks play a crucial role in language learning classrooms. the problem is that among the great quantity of available textbooks on the market which one is appropriate for a specific classroom and a group of learners. in order to evaluate elt textbooks, theorists and writers have offered different kinds of evaluative frameworks based on a number of principles and criteria. this study evaluate...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه بیرجند - دانشکده ادبیات و علوم انسانی 1392

in new management approaches, in the organizations with inflexible structure, existing of red tapes and interruptions caused by limitations and also non-compliance with environmental changes, create demotivation among staff. with regard to the influence of job motivational potential and its relationship to the type of organizational structure( enabling and dissuasive), the goal of this research...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شهید چمران اهواز - دانشکده ادبیات و علوم انسانی 1390

this study intends to investigate samuel beckett’s waiting for godot and endgame under the lacanian psychoanalysis. it begins by explaining the most important concepts of lacanian psychoanalysis. the beckettian characters are studied regarding their state of unconscious, and not the state of consciousness as is common in most beckett studies. according to lacan, language plays the sole role in ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه علامه طباطبایی 1389

after the soviet union dissolution, a chaotic period was begun in the russia. russia lost its glory and felt disgrace. the first group of elites came to power under yeltsin; they tried to re-define russia’s identity as a european country and build a foreign policy on this baseline. therefore russia tried to become closer with the west especially with the u.s. according to their view the sovie...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه فردوسی مشهد - دانشکده ادبیات و علوم انسانی دکتر علی شریعتی 1391

this ethnographic case study research was carried out in a private school setting in the context of iran. the research tried to explore the analysis and identity construction of a group of learners and teachers along with the content analysis of books on the basis of four types of commodified, political, national and narrative identities. how english language learners and teachers in an informa...

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

the control of the configuration of the nise nanostructural thin films with temperature

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