نتایج جستجو برای: that after screening by simple random sampling
تعداد نتایج: 10044823 فیلتر نتایج به سال:
in the past couple of decades sociocultural theory of sla and its implications in efl contexts have attracted attentions of research circles worldwide and aroused some controversies. firth and wagner (1997) have questioned the principles of the cognitive view which gives importance to mental constructs in favor of sociocultural view which highlights social and contextual constructs. but if soci...
OBJECTIVE Expanded newborn screening (NBS) identifies some disorders for which clinical benefit is uncertain, as well as "incidental" findings (eg, carrier status), thus enhancing the need to inform parents about NBS before sample collection. METHODS A self-complete survey was sent to a cross-sectional, stratified, random sample of 5 provider groups in Ontario (obstetricians, midwives, family...
OBJECTIVES A community trial was undertaken to evaluate the effectiveness of the North Carolina Breast Cancer Screening Program, a lay health advisor network intervention intended to increase screening among rural African American women 50 years and older. METHODS A stratified random sample of 801 African American women completed baseline (1993-1994) and follow-up (1996-1997) surveys. The pri...
the aim of the current study was examine the effectiveness of cognitive behavioral therapy on affective maturity and happiness in psychology student of azad university of bojnoutd.40 person were selecting by employing simple random sampling . they completed effective maturity scale (ems) for assessment of effective maturity and oxford happiness questionnaire for the assessment of happiness. an...
abstract prediction of death anxiety on the basis of demographic characteristics and sp پیش بینی اضطراب مرگ براساس ویژگی های دموگرافیک و مولفه های معنویت در سالمندان به کوشش الهام حسن زهی معنویت از جمله مفاهیمی است که سالیان متمادی در حوزه روان شناسی جایگاه خود را یافته است پیشینه پژوهش نشان داده است که با متغیرهای فراوانی در روانشناسی در ارتباط بوده است. هدف از پژوهش حاضر این اس...
abstract: in this thesis, we focus to class of convex optimization problem whose objective function is given as a linear function and a convex function of a linear transformation of the decision variables and whose feasible region is a polytope. we show that there exists an optimal solution to this class of problems on a face of the constraint polytope of feasible region. based on this, we dev...
in this study, scour of mashkid bridge pier located in mashkid river of saravan county has been studied and to measure the scour rate, the numerical model hec-ras 4.0 has been used. upon selection of mashkid river as the case study and whereas the studied zone is important with respect to the climatic conditions and showery monsoon raining and flowing the great and destructive floodwaters, ther...
BACKGROUND Cluster sample surveys of health and nutrition in rural areas of developing countries frequently utilize the EPI (Expanded Programme on Immunization) method of selecting households where complete enumeration and systematic or simple random sampling (SRS) is considered impractical. The first household is selected by choosing a random direction from the centre of the community, countin...
In situations where the experimental or sampling units in a study can be easily ranked than quantified, McIntyre (1952, Aust. J. Agric. Res., 3, 385-390) proposed that the mean of n units based on a ranked set sample (RSS) be used to estimate the population mean, and observed that it provides an unbiased estimator with a smaller variance compared to a simple random sample (SRS) of the same size...
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