نتایج جستجو برای: mean and k
تعداد نتایج: 16898885 فیلتر نتایج به سال:
We consider the flow of closed convex hypersurfaces in Euclidean space $\mathbb{R}^{n+1}$ with speed given by a power $k$-th mean curvature $E_k$ plus global term chosen to impose constraint involving enclosed volume $V_{n+1}$ and mixed $V_{n+1-k}$ evolving hypersurface. prove that if initial hypersurface is strictly convex, then solution exists for all time converges round sphere smoothly. No ...
Background: It is becoming apparent that although inhibition of cholinesterase plays a key role in organophosphate (OP) toxicity, other factors are also important. One of the contributing factors for severity of OP poisoning is electrolyte imbalances such as hypokalemia. This study was aimed at evaluating the value of hypokalemia in association with plasma cholinesterase (PChE) levels in predic...
Background & Aim: Deviation from the original shape of the canal leads to poor filling and lack of proper canal seal and consequently to the failure of root treatment The aim of this experimental study was to determine the extent of apical transportation after instrumentation with hand K-Flexofile and BioRace rotary instruments by cone-beam computed tomography (CBCT). Material and Methods: In t...
Stochastic gradient descent is a general algorithm which includes LMS, on-line backpropagation, and adaptive k-means clustering as special cases. The standard choices of the learning rate 1] (both adaptive and fixed functions of time) often perform quite poorly. In contrast, our recently proposed class of "search then converge" learning rate schedules (Darken and Moody, 1990) display the theore...
Abstract The whole blood potassium concentration has shown the bimodal distribution in sheep, which has been classified into LK and HK types; HK allele is recessive to LK with a single gene inheritance. This polymorphism showed different behavior in different environment, which could be due to adaptation process. This research was conducted on the Zel and kermani breed research station, which...
Digital soil mapping techniques which incorporate the digital auxiliary environmental data to field observation data using software are more reliable and efficient compared to conventional surveys. Therefore, this study has been conducted to use k- Nearest Neighbors (k-NN) and artificial neural network (ANN) to predict spatial variability of soil salinity in Ardekan district in an area of 700 k...
many commonly used statistical methods require that the population distribution be nearly normal. unfortunately, in some papers the one-sample kolmogorov-smirnov test has been used for testing normality while the assumptions of applying this test are not satisfied. to conduct this test, it is assumed that the population distribution is fully specified. in practical situation where the mean and ...
یکی از مشکلات اصلی حمل ونقل جاده ای در کشور، تصادفات است. جهت مدیریت و کاهش تصادفات در یک محور برون شهری لازم است که متولیان ایمنی راه اطلاعات کاملی از عوامل تأثیرگذار بر تصادفات آن محور در اختیار داشته باشند. با توجه به تحقیقات صورت گرفته، شناسایی انواع تصادفات یک محور و عوامل مؤثر بر وقوع آن ها یکی از راهکارهای مؤثر در کاهش تصادفات جاده ای برون شهری است. این مطالعه یک استراتژی تلفیقی را جهت ب...
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