نتایج جستجو برای: phase sampling method
تعداد نتایج: 2278893 فیلتر نتایج به سال:
abstract this study is an attempt to determine the effect of nano- technology education on science lesson for fifth grade in primary school in the city of kermanshah. this research is experimental and is conducted in the from of pre-test and post- test for the control group. an achievement test was administered to determine the rate of learning in the students. the research is an applied one. ...
The bootstrap method is often used for variance estimation in sample surveys with a stratified multistage sampling design. It typically implemented by producing set of weights that made available to users and accounts the complexity Rao–Wu–Yue produce required weights. valid under with-replacement at first stage or fixed-size without-replacement provided first-stage fractions are negligible. So...
Nonuniform Phased Sampling method is proposed to phase-only synthesize the power pattern of both linear and planar antenna arrays. This method modifies the conventional sampling method which is used for amplitude-phase synthesis. This method is based on assigning suitable phases to the sampling points of radiation pattern in order to reach desired amplitude of currents. Some examples are given ...
in new management approaches, in the organizations with inflexible structure, existing of red tapes and interruptions caused by limitations and also non-compliance with environmental changes, create demotivation among staff. with regard to the influence of job motivational potential and its relationship to the type of organizational structure( enabling and dissuasive), the goal of this research...
Abstract Phase retrieval in dynamical sampling is a novel research direction, where an unknown signal has to be recovered from the phaseless measurements with respect frame, i.e., sequence of vectors constructed by repeated action operator. The loss phase here turns well-posed into severe ill-posed inverse problem. In existing literature, involved operator usually completely known. this paper, ...
according to research, academic self-concept and academic achievement are mutually interdependent. in the present study, the aim was to determine the relationship between the academic self-concept and the academic achievement of students in english as a foreign language and general subjects. the participants were 320 students studying in 4th grade of high school in three cities of noor, nowshah...
برای جمع آوری اطلاعات، محقق ده زبان آموز زبان انگلیسی را مورد مصاحبه قرارداد. برای انتخاب این زبان آموزان از نمونه برداری براساس تئوری (theoretical sampling) استفاده شد. محقق برای انجام این تحقیق از روش تئوری برگرفته ازاطلاعات (grounded theory method) استفاده کرد.مصاحبه های آزاد به عنوان ابزار جمع آوری اطلاعات استفاده شد. تمامی اطلاعات بدست آمده به متن تبدیل شد، کد گذاری شد و دائماً با یکدیگر مق...
run-out-table (rot) is located between last finishing stand and down coiler in a hot strip mill. as the hot steel strip passes from rot, water jets impact on it from top and bottom and strip temperature decreases approximately from 800-950 °c to 500-750°c. the temperature history that strip experience while passing through rot affects significantly the metallurgical and mechanical properties, s...
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