نتایج جستجو برای: small area technique
تعداد نتایج: 1847441 فیلتر نتایج به سال:
background: mental disorders may lead to several complications in adolescents’ people whose compensation is very difficult and sometime impossible. they are prone to emotional problems. therefore, knowing prevalence of diseases and valid statistical technique is necessary to plan for prevention and control of diseases. methods: in this cross-sectional study; direct, synthetic, and post-stratifi...
applications such as high definition viedeo reproduction, portable computers, wireless, and multimedia demand, and ever-increasing need for ligh-frequency high-resolution and low-power analog-to-digital converters. flash, two-step flash, and pipeline convertors are fast but consume large amount of power and require large area. to overcome these problems, successive approximation converter blo...
abstract cooperative learning refers to small groups of learners working together as a team to solve a problem, complete a task, or accomplish a common goal. in a cooperative environment one’s success is directly related to the success of other members because the focus on the individual shifts towards the group. to test the effectiveness of the method, using jigsaw technique, a study was cond...
Small Area estimation is a technique used to estimate parameters of subpopulations with small sample sizes. Small area estimation is needed in obtaining information on a small area, such as sub-district or village. Generally, in some cases, small area estimation uses parametric modeling. But in fact, a lot of models have no linear relationship between the small area average and the covariat...
Small area estimation has received a lot of attention in recent years due to growing demand for reliable small area statistics. Traditional area-specific estimators may not provide adequate precision because sample sizes in small areas are seldom large enough. This makes it necessary to employ indirect estimators based on linking models. Basic area level and unit level models have been extensiv...
small area estimation is a technique used to estimate parameters of subpopulations with small sample sizes. small area estimation is needed in obtaining information on a small area, such as sub-district or village. generally, in some cases, small area estimation uses parametric modeling. but in fact, a lot of models have no linear relationship between the small area average and the covariat...
results first needle placement without imaging resulted in blood return in 1/199 participants and positive epidurography in 179/199 (90%). minimal needle repositioning resulted in a positive epidurogram in the remaining 19 attempts. no intravascular injection patterns were observed. conclusions this compares favorably to published success rates of fluoroscopically-guided technique and was well ...
شناورهایswath(small water area twin hull) امروزه با توجه به کاربرد مناسب در صنایع نظامی و تحقیقاتی مورد توجه مالکان اینگونه ناوگان قرار گرفته است..این شناور دارای دو بدنه مغروق و دو بدنه نیمه مغروق به نام استرات می باشد. در این پروژه با استفاده از روش شناورهای باریک و انتگرال میشل برای مقاومت موج سازی و حل عددی آن به محاسبه مقاومت موج سازی شناور پرداخته می شود.سپس با استفاده از روابط تجربی ضری...
background often, there is no access to sufficient sample size to estimate the prevalence using the method of direct estimator in all areas. the aim of this study was to compare small area’s bayesian method and direct method in estimating the prevalence of steatosis in obese and overweight children. materials and methods: in this cross-sectional study, was conducted on 150 overweight and obese ...
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