نتایج جستجو برای: control study
تعداد نتایج: 4825609 فیلتر نتایج به سال:
south asian countries have a high prevalence of coronary heart disease (cad) in line with their economic development. in these countries, we find nearly one quarter of the total world population in the process of nutritional transition, from poverty to affluence due to rapid economic development. india; in particular, with a population of over one billion has a high burden of cad. to evaluate t...
background: nowadays, chlamydia trachomatis is known as a causative agent of infertility. because of, asymptomatic nature of infection, many may suffer from its lasting complications such as infertility. this study was performed in tehran during april 2007 to april 2008 to compare the prevalence of chlamydia trachomatis infection in fertile and infertile women using elisa and pcr methods. metho...
background: a case-control study was carried out to investigate the roles of prior allergies and family history of cancers and their interaction in the etiology of adult leukemia. methods: prior allergies status and family history of cancers in first-degree relatives were compared between 131 incident leukemia cases and 206 hospital-based controls. odds ratios (or) were estimated using an uncon...
abstract this mixed method study examines whether there is any relationship among the variables of the study (job satisfaction, social capital and motivation). the researcher considered job satisfaction and social capital as independent variables; motivation is the dependent variable of the study. the researcher applied a questionnaire to assess each variable. to measure efl teachers’ job sati...
fuzzy logic has been developed over the past three decades into a widely applied techinque in classification and control engineering. today fuzzy logic control is one of the most important applications of fuzzy set theory and specially fuzzy logic. there are two general approachs for using of fuzzy control, software and hardware. integrated circuits as a solution for hardware realization are us...
A physiologically based pharmacokinetic model is build to determine the dynamics of drug (compound) concentration in the human body. The model consists of two major subsystems. The first subsystem simulates the diffusion of the drug(s) and respiratory gases between plasma and the tissues. Second subsystem controls the processes of the drug and gas delivery to the tissues. The system of control ...
a large number of single research studies on the effects of strategy-based instruction (sbi) in teaching english as a foreign or second language has been conducted so far. however, the lack of a comprehensive meta-analysis targeting the effectiveness of english language sbi is observed. moreover, the findings of experimental studies regarding the context of the english language, proficiency lev...
sange siyah dam is located two kilometers down the kabod khani village. the environ of ghorrve city in kurdestan province. this is an clay core dam. in this dam instrumentation is performed in three section and consist of electrical piezometers, total pressure cells, settlement cells and so on. the main objective of instrumentation is to control the behavior of dam body and foundation, end else...
Our society is increasingly moving towards richer forms of information exchange where mobility of processes and devices plays a prominent role. This tendency has prompted the academic community to study the security problems arising from such mobile environments, and in particular, the security policies regulating who can access the information in question. In this paper we describe a calculus ...
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