نتایج جستجو برای: slr
تعداد نتایج: 2372 فیلتر نتایج به سال:
Increased skeletal muscle capillary density would be a logical adaptive mechanism to chronic hypoxic exposure. However, animal studies have yielded conflicting results, and human studies are sparse. Neoformation of capillaries is dependent on endothelial growth factors such as vascular endothelial growth factor (VEGF), a known target gene for hypoxia inducible factor 1 (HIF-1). We hypothesised ...
This paper considers the dynamic scheduling of parallel, dependent tasks onto a static, distributed computing platform, with the intention of delivering fairness and quality of service (QoS) to users. They key QoS requirement is that responsiveness is maintained for workloads with a wide range of execution times (minutes to months) even under transient periods of overload. A survey of schedule ...
Following the recent resolution of the longstanding problem of reconciling constant frequency nuclear‐spin lattice relaxation (SLR) activation energies and d.c. conductivity activity energies in ion conductingglasses, we point out a new problem which seems not to have been discussed previously. We report conductivity data measured at a series of fixed frequencies and variable temperatures on a ...
مقدمه: در بیماران مبتلا به دیسک کمر، علاوه بر روش های تصویر برداری ام آر آی، ابزارهای سنجش از قبیل پرسشنامه های درد، ناتوانی و نیز کیفیت زندگی برای ارزیابی پیامد مورد استفاده قرار می گیرند. اهداف: بررسی ارتباط بین یافته های تصویربرداری ام آر آی با نشانه ها و آزمون های بالینی، سطح ناتوانی و کیفیت زندگی بیماران مبتلا به بیرون زدگی دیسک کمر. بیماران و روش ها: 76 بیمار مبتلا به بیرون زدگی دیسک کم...
Geographic partitioning is postulated to foster divergence of Helicobacter pylori populations as an adaptive response to local differences in predominant host physiology. H. pylori's ability to establish persistent infection despite host inflammatory responses likely involves active management of host defenses using bacterial proteins that may themselves be targets for adaptive evolution. Seque...
As indicated by various and some overlapped phenotypes of the dominant mutants, the Aux/IAA genes of Arabidopsis (Arabidopsis thaliana) concomitantly exhibit a functional similarity and differentiation. To evaluate the contributions of their expression patterns determined by promoter activity and molecular properties of their gene products to Aux/IAA function, we examined phenotypes of transgen...
The aim of the iCS system is to detect and record footages of possibly hazardous situations on a pedestrian crossing and/or conduct real-time traffic surveillance. Videos recorded by cameras could be used for enforcement purposes or as evidence in case of an accident. Information about the traffic could be used for statistic purposes and thus help to improve road infrastructure planning and tra...
BACKGROUND Recent functional magnetic resonance imaging (fMRI) decoding techniques allow us to predict the contents of sensory and motor events or participants' mental states from multi-voxel patterns of fMRI signals. Sparse logistic regression (SLR) is a useful pattern classification algorithm that has the advantage of being able to automatically select voxels to avoid over-fitting. However, S...
Recent studies have used pattern classification algorithms to predict or decode task parameters from individual fMRI activity patterns. For fMRI decoding, it is important to choose an appropriate set of voxels (or features) as inputs to the decoder, since the presence of many irrelevant voxels could lead to poor generalization performance, a problem known as overfitting. Although individual vox...
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