نتایج جستجو برای: lower estimate
تعداد نتایج: 896600 فیلتر نتایج به سال:
لوکمی از جمله بیماری هایی است که در کودکان شیوع بیشتری دارد، اما ریسک فاکتورهای اصلی این بیماری همچنان ناشناخته باقی مانده اند، این مطالعه گذشته نگر به نقش میدان های الکترومغناطیسی در بروز لوکمی کودکان و تعیین نقش آلفا آمیلاز به عنوان بیومارکر تعیین کننده سابقه مواجهه با این میدان ها پرداخته است. جمعیت مورد مطالعه شامل 100 نفر کودک سالم کمتر از 12 سال و 22 نفر کودک کمتر از 12 سال با تشخیص قطعی ...
in this paper, we discuss the geometric properties of solution and lower bound estimate of ∆um−1 of the cauchy problem for a degenerate parabolic equation with periodic source term ut =∆um+ upsint. our objective is to show that: (1)with continuous variation of time t, the surface ϕ = [u(x,t)]mδq is a complete riemannian manifold floating in space rn+1and is tangent to the space rn at ∂h0(t); (2...
چکیده ندارد.
This paper presents a novel algorithm based on particle swarm optimization (PSO) to estimate the states of electric distribution networks. In order to improve the performance, accuracy, convergence speed, and eliminate the stagnation effect of original PSO, a secondary PSO loop and mutation algorithm as well as stretching function is proposed. For accounting uncertainties of loads in distributi...
Background: Multiple Sclerosis (MS) is one of the most debilitating disease among young adults. Understanding the disability score (Expanded Disability Status Scale (EDSS)) of these patients is helpful in choosing their treatment process. Calculating EDSS takes a lot of time for Neurologists, so having a way to estimate EDSS can be helpful. This study aimed to estimate the EDSS score of MS pati...
The present study aimed at investigating the possible impact ofZone of Proximal Development (ZPD) on the learners’ performance. Forty-sixIranian university students participated in this study by taking two types of readingcomprehension tests (i.e., the main idea and Wh-question type). The researchersused the Winstep program to analyze the data and estimate the learners’ Raschmeasure in pre, pos...
In the present work, metallic oxide–organic material hybrid nanocomposites (Poly vinyl pyrrolidone- zinc oxide, PVP-ZnO) have been synthesized using sol-gel method. Nanostructural properties of aforementioned materials were studied by scanning electron microscope (SEM) and X-ray diffraction techniques. Williamson equation was used to estimate lattice strain in the PVP-ZnO nanocomposite. The dom...
In this paper, we discuss the geometric properties of solution and lower bound estimate of ∆um−1 of the Cauchy problem for a degenerate parabolic equation with periodic source term ut =∆um+ upsint. Our objective is to show that: (1)with continuous variation of time t, the surface ϕ = [u(x,t)]mδq is a complete Riemannian manifold floating in space RN+1and is tangent to the space RN at ∂H0(t); (2...
the present study aimed at investigating the possible impact ofzone of proximal development (zpd) on the learners’ performance. forty-sixiranian university students participated in this study by taking two types of readingcomprehension tests (i.e., the main idea and wh-question type). the researchersused the winstep program to analyze the data and estimate the learners’ raschmeasure in pre, pos...
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