نتایج جستجو برای: stage randomized sampling method based on cochran
تعداد نتایج: 9988966 فیلتر نتایج به سال:
Today, there is a growing trend towards qualitative research in different areas of academic investigations. However, students face difficulties in deciding on qualitative methods of research, because most of the literature on qualitative research focuses on the philosophical and theoretical aspects, and they hardly offer any practical guidelines. This problem is rooted in the essence of qualita...
in this thesis protic and aprotic ammonium-based ionic liquids were synthesized and their surface tensions were measured in the range of 298-373k. the protics are alkyl ammonium-based ils with the carboxylate (formate, acetate, propionate) anion and aprotics are quaternary ammonium-based ils with bis(trifluoromethylsulfonyl)imide anion. capillary rise method was used for surface tension measure...
The International Tobacco Control (ITC) Policy Evaluation Survey of China uses a multi-stage unequal probability sampling design with upper level clusters selected by the randomized systematic PPS sampling method. A difficulty arises in the execution of the survey: several selected upper level clusters refuse to participate in the survey and have to be replaced by substitute units, selected fro...
faculty members of the universities and higher education institutions are considered as the most influential social classes in the development of public culture. this important feature do achieves more importance in development of social competencies. one of the important social competencies in contemporary society is the use of electronic resources that are directly related to the level of pre...
this study examines the effetivenss of task-based activities in helping students learn english language structures for a better communication. initially, a michigan test was administered to the two groups of 52 students majoring in english at the allameh ghotb -e- ravandi university to ensure their homogeneity. the students scores on the grammar part of this test were also regarded as their pre...
The present research with a sociological approach studies the relationship between ethnic identity and civic engagement in the city of Ilam. The research methodology is survey and data collection tool is questionnaire. The statistical population includes all male and female people higher than 15 years old in the city of Ilam based on census in 2006. According to Cochran sampling, 400 people wer...
This study connected with the aim of relationship between attitudes and social competence in parent-child emotional metacognition. With Cochran formula and Multi-stage cluster random sampling method 250 students were selected as a sample size. Emotional metacognition questionnaires conducted on students and their parents to complete the religious attitudes and social competence. Statistical mod...
abstract the present study was an attempt to investigate the effect of critical thinking on writing ability of 60 iranian intermediate efl learners studying at chenar language institute in khuzestan, iran. to this end, the participants of the study were selected based on their performance in an pet test, a cornell critical thinking test form x and a pre-test of writing. the participants un...
the ability of composing a coherent and extended piece of writing in second language is considered as a fundamental factor to convey information and ideas of learners through the academic issues. although learners may achieve a perfect academic writing skill through assigning the l2 tasks in content based instruction, but demonstration of their abilities may be related to their ability in l1 es...
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