نتایج جستجو برای: control and experimental
تعداد نتایج: 17085003 فیلتر نتایج به سال:
the current study intended to investigate the effectiveness of cooperative learning on math anxiety, attitude toward mathematics, and academic achievement of female high school students. the study method was experimental and was conducted by pretest-posttest design with the control group. the population included all female high school students (second year) who were studying experimental scienc...
cement is an essential ingredient in the concrete buildings. for production of cement considerable amount of fossil fuel and electrical energy is consumed. on the other hand for generating one tone of portland cement, nearly one ton of carbon dioxide is released. it shows that 7 percent of the total released carbon dioxide in the world relates to the cement industry. considering ecological issu...
چکیده معضل چاقی به عنوان عارضه ای جدی برای زندگی بی تحرک و ماشینی، مورد توجه اغلب مراکز بهداشتی و درمانی دنیا قرار گرفته است. چاقی عامل زمینه ساز و در واقع عامل خطری برای بروز بیماری های قلبی - عروقی است که عموماً با کاهش طول عمر مورد انتظار و افزایش بیماری همراه است. هدف پژوهش حاضر تأثیر 12 هفته تمرینات ویبریشن کل بدن، تمرینات هوازی و تمرینات ترکیبی( هوازی و ویبریشن کل بدن) بر ترکیب بدنی زنان ...
background: smoking among youths is a main public health concern, and detecting predictors of smoking is essential for designing preventive programs. any interventional program should plan with highlighting on behavioral change models and based on operative interventional program. so, this study aimed to investigate school-based smoking prevention programs for middle school students in nowshahr...
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...
چکیده : تحقیق حاضر به منظور مقایسه دو روش تدریس انتزاعی و تدریس در متن بر یادگیری دستور زبان ایتالیاییِ زبان آموزان ترم 1 مدرسه ایتالیایی تهران در تابستان 89 صورت گرفت. روش تحقیق آزمایشی بوده و پژوهش بر 30 نفر از زبان آموزان مدرسه ایتالیایی تهران که بصورت تصادفی به 2 گروه جایگزین شدند صورت گرفت. ابزار تحقیق آزمون 30 سوالی تستی از بانک سوالات استاندارد شده بود که به تصادف انتخاب شده بودند.روشهای...
this study is the effects of inhalation toxic mixture of bleach and detergent was examined on the epithelial layer of trachea in the mice. in this study, 42 adult male mice nmri race weighing 35-40 gr and from age 8 to 10 weeks were divided into 6 experimental groups and one control group. experimental groups 1-2-3 with the using of chamber, as inhalation 20 minutes were exposure to spray the a...
wireless sensor networks (wsns) are one of the most interesting consequences of innovations in different areas of technology including wireless and mobile communications, networking, and sensor design. these networks are considered as a class of wireless networks which are constructed by a set of sensors. a large number of applications have been proposed for wsns. besides having numerous applic...
the ability to speak two languages in the world is a remarkable achievement. there is a good reason to believe that bilingualism is the norm for the majority of people in the world because 70% of the earth’s population are supposed to be bilingual or multilingual. various investigations have shown that the native language impacts foreign word recognition, and this influence is adapted by the de...
abstract to investigate the effect of community of inquiry method on improvement of interpersonal relationship skills, based on lipman’s theory, an experiment was conducted in tehran primary schools among students of third, fourth and fifth grade. 190 boy and girl students were randomly selected (97 boys, 93 girls) and assigned to experimental and control groups (88 experimental, 102 control). ...
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