نتایج جستجو برای: multiple regressions and one sample t test
تعداد نتایج: 17215562 فیلتر نتایج به سال:
در این پژوهش منشاء خزندگان را مورد بررسی قرار داده، خانواده های مارها را در ایران معرفی نموده و ویژگی های آنها را ذکر کرده ایم، خانواده colubridae را از نظر فیلوژنی، رده بندی و همچنین جنس های آن را، مرور کرده ایم. جنس eirenis jan, 1868 که هدف اصلی پژوهش حاضر است در ایران دارای هشت گونه می باشد، e. collaris (menetries, 1832) ، e. coronella (schlegel, 1837) ،e.decemlineatus(dumeril,bibron and dum...
Quantitative structure-activity relationship (QSAR) models were employed for prediction the activity of P2X7 receptor antagonists. A data set consisted of 50 purine derivatives was utilized in the model construction where 40 and 10 of these compounds were in the training and test sets respectively. A suitable group of calculated molecular descriptors was selected by employing stepwise multiple ...
بحث ارزیابی یک برنامه به عنوان آخرین مرحله برنامه ریزی از آن جهت مهم به نظر می رسد که طی آن مراحل مختلف پشت سر گذاشته شده یک برنامه مورد کندو کاو و تفحص قرار می گیرد تا نقاط ضعف و قوت برنامه مشخص گردد و در برنامه ریزی های آتی نقاط ضعف پوشش داده شود. اهمیت ارزیابی برنامه در حوزه آموزش نیروی انسانی که بازوان اجرایی سازمان ها و موسسات می باشند دو چندان است. در این تحقیق تلاش شده است دوره های آموزش...
nasonovia ribisnigri (mosely) is one of the most important pests of the lettuce plant and it was reported for the first time in ahvaz in 2008. in order to investigate the dominant species of its natural enemies and their population fluctuations, sample were taken arbitrarily from fifty plants twice a week during the growing season in 2010-2012. in this study, ten species of predators, three spe...
In this paper, the quantitative structure activity-relationship (QSAR) of the CCR2b receptor inhibitors was scrutinized. Firstly, the molecular descriptors were calculated using the Dragon package. Then, the stepwise multiple linear regressions (SW-MLR) and the genetic algorithm multiple linear regressions (GA-MLR) variable selection methods were subsequently employed to select and implement th...
Aim/Purpose: The aim of this study was to identify the critical predictors affecting project desertion in Blockchain projects. Background: is one innovations that disrupt a broad range industries and has attracted interest software developers. However, despite being an open-source (OSS) project, maintenance ultimately relies on small core developers, it still uncertain whether technology will c...
Introduction: Multiple Sclerosis (MS) is one of the most common chronic diseases of the central nervous system which causes mental disorders including anxiety in patients. Since the peer group can better communicate with their counterparts and encourage them to choose appropriate healthy behaviors, this study was designed to examine the impact of peer educational program on anxiety of multiple ...
as polysemy is encountered frequently in english as foreign language. fl learners’ ability to disambiguate polysemous verbs becomes critical to their comprehension in the target language. this thesis, accordingly, investigated how iranian efl learners achieved comprehension of english polysemous verbs by using three different types of cues: (1) elaborated context, (2) semantic frames, and (...
one very decisive factor in students’ academic destiny is the result they get at final term examinations. because of its importance, both students and teachers are curiously anxious about them. as normally it is the case, these final term tests are prepared hurriedly in short time by teachers which result in students’ dissatisfaction, complaining on how the test was different from their expecta...
abstract listening is a key and main tool in second language skill and its development is of prime concern to teachers and learners. furthermore, the application of technology in language classrooms has become more commonplace in the last fifty years. computer and the internet have made foreign language materials easy to access and use. so, the present study is an attempt to examine the effec...
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