نتایج جستجو برای: two tailed t
تعداد نتایج: 2993636 فیلتر نتایج به سال:
electro encephalography is one of the reliable sources to detect sleep onset while driving. in this study we have tried to demonstrate that sleepiness and alertness signals are separable with an appropriate margin by extracting suitable features. so first of all we have recorded eeg signals from 10 volunteers. they were obliged to be sleep deprived about 20 hours before the test. we recorded th...
109 retrieved after testing and subjected to threepoint bending (Figure 1B) and pull-out tests (Figure 1C) to elucidate differences in relevant performance characteristics. One-tailed paired student’s t-tests were used to evaluate the injuries applied to the specimens. For all other tests in this study, two-tailed, two-sample, equal variance t-tests were used with significance levels set at p=0...
این مطالعه به بررسی رابطه میان دریافت شنیداری و میزان تحمل ابهام و سطوح بالا، متوسط و پایین آن در زبان آموزان ایرانی در اصفهان می پردازد.علاوه بر این، تاثیر تدریس ضمنی صورت های خفیف و اتصال گفتاری در تلفظ، بر دریافت شنیداری و تاثیر این آموزش ها و گذر زمان در تغییر سطح تحمل ابهام بررسی شده است. پس از همگون سازی شرکت کنندگان به وسیله آزمون تعیین سطح آکسفورد، 82 شرکت کننده به 4 زیرگروه کنترل و آزم...
Stochastic Neighbor Embedding (SNE) has shown to be quite promising for data visualization. Currently, the most popular implementation, t-SNE, is restricted to a particular Student t-distribution as its embedding distribution. Moreover, it uses a gradient descent algorithm that may require users to tune parameters such as the learning step size, momentum, etc., in finding its optimum. In this p...
By imposing directional decisions on traditional two-tailed tests, you will overestimate power, underestimate sample size, and ignore the risk of Type III error. You can avoid these problems by using the directional two-tailed test. This paper demonstrates how to use PROC POWER to estimate the prospective power and Type III error for one-sample, two-sample and paired t tests for means, and bino...
Dogs differ greatly in their morphological characteristics including various tail phenotypes. Congenitally short-tailed dogs are present in many breeds; however, the causative mutation located in the T-box transcription factor T gene (C189G) had only been described in the bobtailed Pembroke Welsh Corgis. We investigated here the presence of the T gene mutation in 23 other breeds (360 dogs, incl...
AIMS To determine the surgical outcome of indocyanine green (ICG) assisted retinal internal limiting membrane (ILM) peeling in macular hole surgery for severely myopic eyes and compare the visual and anatomical outcomes with an emmetropic control group. METHODS 10 severely myopic eyes (-6.0 D or greater) of 10 patients with macular holes without retinal detachment were recruited prospectively...
In order to trigger an adaptive immune response, T cells move through lymph nodes searching for dendritic cells that carry antigens indicative of infection. We observe T cell movement in lymph nodes and implement those movement patterns as a search strategy in a team of simulated robots. We find that the distribution of step-sizes taken by T cells are best described by heavy-tailed (Lévy-like) ...
نیروگاه حرارتی شازند واقع در شمال شرقی شازند در استان مرکزی از سال 1379 شروع به کار کرد. سوخت مورد نیاز این نیروگاه، گاز طبیعی و اغلب مازوت است. بنابراین آلاینده های منتشره از این نیروگاه، آلاینده های گوگردی، نیتروژن دار و مونوکسیدکربن هستند. بیشترین آلاینده در زمان استفاده از مازوت، ترکیبات گوگردی می باشد. به دلیل اهمیت گیاهان خانواده ی لگومینوزه از نظر اکولوژیکی، مرتعی، دارویی و خوراکی این مط...
In this study, POU1F1 gene polymorphism was detected in five sheep populations (large-tailed Han, small-tailed Han, Yuxi fat-tailed, Lanzhou large-tailed, and Mongolian sheep), using DNA pooling and sequencing, to provide theoretical basis for the breeding of excellent sheep varieties. Three single-nucleotide polymorphism (SNP) loci of POU1F1 gene were detected in five sheep populations, namely...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید