نتایج جستجو برای: population mean of family
تعداد نتایج: 21251063 فیلتر نتایج به سال:
background : this study was designed to investigate whether there was an association between abo blood groups and cardiovascular risk factors in healthy population. methods : in this cross-sectional study, risk factors screening for cardiovascular disease(cvd) on 5000 healthy persons of golestan province, northern iran, in 2005 was estimated by a questionnaire that included age, sex, physical...
abstractof two mcall programs introducing 100 vocabulary items through two im the researcher of the present study was intrigued to compare the effects age modalities (pictures and streaming video) with those of a conventional method (teacher instruction) in an efl context. she set out to investigate whether such multimedia environments could provide a more effective environment for vocabulary...
Background: In providing optimum medical and health services, great pressure is put on the physical and mental health of family physicians. Job burnout is damaging to the health of family physicians and medical treatment personnel. It leads to reduced job productivity, increased absenteeism, increased healthcare costs, elevated turnover rates, a reduced level of service provide...
Abstract: In this paper we have suggested a general procedure for estimating the population mean through defining a class of estimators. Many of the existing estimators are shown particular members of the proposed class of estimators. It has been shown to the first degree of approximation that mean squared error (MSE) of the proposed class of estimators are better than the competing ratio, regr...
Submitted: May 23, 2013; Accepted: Jul 3, 2013; Published: Jul 19, 2013 Abstract: This paper deals with the problem of estimating the finite population mean when some information on two auxiliary attributes are available. It is shown that the proposed estimator is more efficient than the usual mean estimator and other existing estimators. The study is also extended to two-phase sampling. The re...
the major aim of this study was to investigate the relationship between iq, eq and test format in the light of test fairness considerations. this study took this relationship into account to see if people with different eq and iq performed differently on different test formats. to this end, 90 advanced learners of english form college of ferdowsi university of mashhad were chosen. they were ask...
Background and Aim: Uncontrolled population growth is actually an important threat to both the future health of the environment and economy. Decreasing the rate of fertility is considered as a vital index towards establishing smaller families, stabilizing population growth, and wellbeing. The present study was done to determine the frequency of unexpected pregnancy and factors related to it. Ma...
Introduction: The contradiction between the two roles of work and family in nurses is one that reduces their efAbstract Introduction: Conflict between the two roles of work and family in nurses is something that reduces their efficiency. The purpose of this study was to investigate the relationship between nurseschr('39') cognitive and metacognitive skills with work-family conflict. Methods: Th...
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