نتایج جستجو برای: شاخص dsi
تعداد نتایج: 75451 فیلتر نتایج به سال:
ناهمسان گردی نشان دهنده تغییر یک یا چند خاصیت از ماده بر حسب جهت است. تعیین دقیق ناهمسان گردی در مطالعات ژئوفیزیک اکتشافی، ژئوفیزیک مخزن، شناسایی مسیر مناسب برای حفاری چاه و جلوگیری از بروز مشکلاتی نظیر مشکل تولید ماسه بسیار مهم است. ابزار dsi کندی امواج برشی را در دو جهت عمود بر هم، به موازات محور چاه اندازه گیری می کند. با استفاده از نگار dsi و تکنیک ریاضی چرخش آلفورد، می توان زون های ناهمسان...
The effectiveness of manual circumlaryngeal therapy in future elite vocal performers: a pilot study.
OBJECTIVES/HYPOTHESIS The purpose of this study was to investigate the impact of a single session of manual circumlaryngeal therapy on the vocal characteristics of future elite vocal performers (music students). STUDY DESIGN A pretest/post-test control group design was used. METHODS Sixteen music students were randomly divided in an experimental and control group. The experimental group rec...
PURPOSE OF THE STUDY To examine the documentation of sensory impairment in the electronic medical records (EMRs) of Veterans with both hearing and vision losses (dual sensory impairment [DSI]). DESIGN AND METHODS A retrospective chart review of the EMRs of 20 patients with DSI was conducted. Providers' documentation of the presence of sensory impairment, the use of assistive technology during...
OBJECTIVE To describe the prevalence of self-reported rates of auditory, visual, and dual sensory impairment (DSI) in Afghanistan and Iraq war Veterans receiving traumatic brain injury (TBI) evaluations. DESIGN Retrospective medical chart review. PARTICIPANTS Thirty-six thousand nine hundred nineteen Veterans who received a TBI evaluation between October 2007 and June 2009. Final sample inc...
PURPOSE We applied a novel diffusion spectrum imaging (DSI) acquisition to determine associations between aging and subcortical fiber tract integrity. MATERIALS AND METHODS We studied 35 cognitively healthy subjects (17 women), spanning the adult age range between 23 and 77 years, using anatomical MRI and a novel DSI acquisition scheme at 3 Tesla. The study was approved by the local instituti...
For a given family (Gi)i∈N of finitely generated abelian groups, we construct Dedekind domain D having the following properties. Pic(D)≅⨁i∈NGi. each i∈N, there exists submonoid Si⊆D• with Pic(DSi)≅Gi. Each class Pic(D) and all Pic(DSi) contains infinitely many prime ideals.
Despite having similar brains, related species can display divergent behaviors. Investigating the neural basis of such behavioral divergence can elucidate the neural mechanisms that allow behavioral change and identify neural mechanisms that influence the evolution of behavior. Fewer than three percent of Nudipleura (Mollusca, Opisthobranchia, Gastropoda) species have been documented to swim. H...
Introduction The diffusion spectrum imaging (DSI) technique can map intravoxel heterogeneity of molecular water diffusion and depict complex fiber architecture within tissue structures [1]. Theoretically, an extremely high maximum b-value (i.e., > 10000 s/mm) is necessary for good DSI reconstruction, though this is difficult to achieve due to limited signal-to-noise ratio (SNR). Previously, an ...
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