نتایج جستجو برای: آشکارساز سنتیلاتوری gos

تعداد نتایج: 2387  

آشکارساز انرژی وسیله مناسب و ساده‌ای برای سنجش طیف در شبکه‌های رادیو شناختی است و به‌طور گسترده در شبکه‌های مخابرات بی-سیم مورد استفاده قرار می‌گیرد. در این مقاله، عملکرد سنجش طیف با آشکارساز انرژی بهبود‌ یافته بررسی می‌شود. در آشکارساز انرژی بهبود یافته، تصمیم‌گیری در رابطه با وضعیت طیف با محاسبه نرم بهینه از سیگنال دریافتی انجام می‌شود. همچنین به‌منظور کاهش تداخل و بهبود استفاده مجدد از طیف، ...

Journal: :Wireless Personal Communications 2015
Subhendu Batabyal Suvra Sekhar Das

Analytical methods on grade of service (GoS, quantified by the blocking probability which is denoted as Pb) evaluation in orthogonal frequency division multiple access cellular networks for real-time traffic are important for cell-dimensioning. Existing works use simplified spectral efficiency (SE) models that lead to conservative outcomes. For computing cell-wide and cell-average Pb the exact ...

Journal: :The Lancet Neurology 2013
P David Adelson Stephen R Wisniewski John Beca S Danielle Brown Michael Bell J Paul Muizelaar Pamela Okada Sue R Beers Goundappa K Balasubramani Deborah Hirtz

BACKGROUND On the basis of mixed results from previous trials, we assessed whether therapeutic hypothermia for 48-72 h with slow rewarming improved mortality in children after brain injury. METHODS In this phase 3, multicenter, multinational, randomised controlled trial, we included patients with severe traumatic brain injury who were younger than 18 years and could be enrolled within 6 h of ...

2014
Sabine Amani Tanner Christophe Chassard Annina Zihler Berner Christophe Lacroix

BACKGROUND Probiotics and prebiotics are promising strategies to counteract Salmonella prevalence in swine. In the present study, we investigated the effects of prebiotics (fructo- (FOS), galacto- (GOS) and mannan- (MOS) oligosaccharides) and the bacteriocinogenic Bifidobacterium thermophilum RBL67 (RBL67) on Salmonella enterica subsp. enterica serovar Typhimurium N-15 (N-15) colonization using...

2012
Neil Davies Chris Meyer Jack A Gilbert Linda Amaral-Zettler John Deck Mesude Bicak Philippe Rocca-Serra Susanna Assunta-Sansone Kathy Willis Dawn Field

We are entering a new era in genomics-that of large-scale, place-based, highly contextualized genomic research. Here we review this emerging paradigm shift and suggest that sites of utmost scientific importance be expanded into 'Genomic Observatories' (GOs). Investment in GOs should focus on the digital characterization of whole ecosystems, from all-taxa biotic inventories to time-series 'omics...

ژورنال: :علوم و فناوری های پدافند نوین 0
جهان جمشیدی jahan jamshidi imam hossein univercityدانشگاه امام حسین محمد علائی mohamad alaee imam hossein univercityدانشگاه امام حسین عبدالله مهدلو abdollah mahdloo imam hossein univercityدانشگاه امام حسین علی ناصری ali naseri imam hossein univercityدانشگاه امام حسین

حضور اهداف تداخلی در داده های اعمالی به آشکارساز ca-cfar به منظور تخمین توان نویز می تواند به شدت عملکرد این آشکارساز را کاهش دهد. برای حل این مشکل آشکارساز ex-cfar ارائه شده است که سیگنال های بزرگ را قبل از متوسط گیری از سلول ها تفکیک می کند. معمولاً عملکرد این آشکارساز در محیط دارای نویزهای همگن در مقایسه با آشکارساز متداول ca-cfar کاهش نمی یابد. در این مقاله به تعیین مقادیر بهینه پارامتر تفکی...

Journal: :Stroke 2000
T E Lempert A M Malek V V Halbach C C Phatouros P M Meyers C F Dowd R T Higashida

BACKGROUND AND PURPOSE We sought to describe the clinical outcome and angiographic results obtained in the endovascular therapy of ruptured posterior circulation cerebral aneurysms using Guglielmi detachable coils (GDC) over a 7-year period. METHODS A retrospective analysis was performed of 112 patients evaluated at the University of California at San Francisco Medical Center between June 199...

2008
Akio Ogihara Naoya Inoue Motoi Iwata Akira Shiozaki

Because digital audio data is not deteriorated by copying, its illegal reproduction can be easily made. Recently, copyright infringement becomes a social problem such as the illegal reproduction is distributed on the Internet. Hence, the audio watermarking methods, techniques to embed proprietary data into dagital audio data, have attached attention as a prevention technique against the copyrig...

Journal: :ACS applied materials & interfaces 2016
Hongyan Zhang Zhen Zhang Yanhong Wang Chuanchen Wu Qingling Li Bo Tang

A strategy based on an immune-graphene oxide (GO)-magnetic microbead complex for the sensitive, rapid, portable, and low-cost detection of cancer cells was developed. The high-efficiency cell capture and high sensitive thermal contrast detection could be simultaneously achieved using magnetic microbeads and the photothermal effect of GOs. The temperature variation caused by irradiating the GOs ...

2016
Annettee Nakimuli Ashley Moffett

The high neonatal and maternal morbidity and mortality associated with the extremes of birth weight is referred to as the obstetric dilemma. Pre-eclampsia and other conditions that lead to low birth weight are considered as the Great Obstetrical Syndromes (GOS). At the other extreme is high birth weight resulting in obstructed labour. Fetal weight largely depends on placental function and defec...

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