نتایج جستجو برای: آزمون glr

تعداد نتایج: 120652  

ژورنال: :مهندسی برق مدرس 0
mohammad reza taban yazd university mohammad reza aref sharif university of technology

در این مقاله، آشکارسازی بهینه سیگنال هدف رادار در تداخل با توزیع غیرگوسی مطالعه شده است. آشکارسازی همدوس بوده و از چند نمونه متوالی دریافتی ازیک سلول راداری، برای آشکارسازی در آن سلول استفاده شده است. معیار بهینگی نیمن - پیرسون بوده و توزیع تداخل شبه گوسی (sirp) فرض شده است. از آنجا که تحت شرایط عملی و پیچیده فوق، امکان دستیابی به حل دقیق برای آزمون بهینه آشکارسازی یا alr وجود ندارد، با استفاده...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شیراز 1390

در این پایان‏نامه، مسئله آشکارسازی هدف راداری در راستای مشخص با فرض اینکه دامنه های هر پالس دریافتی دارای تموج آهسته می?‏‏باشند در حضور جمر با استفاده از آرایه خطی یکنواخت مد نظر قرار گرفته است و سه روش آشکارسازی بر مبنای آزمون glr با در نظر گرفتن اینکه دامنه سیگنال هدف، تعداد، جهت و توان جمرها و همچنین وارایانس نویز گیرنده مجهول است، ارائه می‏گردد. در روش اول، ابتدا تخمینی از تعداد و جهت جمرها...

2016
Benjamin J. Moss Lidia Park Caroline L. Dahlberg Peter Juo

Regulation of synaptic AMPA receptor levels is a major mechanism underlying homeostatic synaptic scaling. While in vitro studies have implicated several molecules in synaptic scaling, the in vivo mechanisms linking chronic changes in synaptic activity to alterations in AMPA receptor expression are not well understood. Here we use a genetic approach in C. elegans to dissect a negative feedback p...

Journal: :Neuron 2002
Michelle Burbea Lars Dreier Jeremy S. Dittman Maria E. Grunwald Joshua M. Kaplan

Regulated delivery and removal of alpha-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid (AMPA) glutamate receptors (GluRs) from postsynaptic elements has been proposed as a mechanism for regulating synaptic strength. Here we test the role of ubiquitin in regulating synapses that contain a C. elegans GluR, GLR-1. GLR-1 receptors were ubiquitinated in vivo. Mutations that decreased ubiquitinat...

Journal: :Journal of cell science 2005
Howard Chia-Hao Chang Christopher Rongo

AMPA-type glutamate receptors mediate excitatory synaptic transmission in the nervous system. The receptor subunit composition and subcellular localization play an important role in regulating synaptic strength. GLR-1 and GLR-2 are the Caenorhabditis elegans subunits most closely related to the mammalian AMPA-type receptors. These subunits are expressed in overlapping sets of interneurons, and ...

1999
John Aycock R. Nigel Horspool

Tomita devised a method of generalized LR (GLR) parsing to parse ambiguous grammars e ciently. A GLR parser uses linear-time LR parsing techniques as long as possible, falling back on more expensive general techniques when necessary. Much research has addressed speeding up LR parsers. However, we argue that this previous work is not transferable to GLR parsers. Instead, we speed up LR parsers b...

Saghaei, A., Shokrizadeh, R., Yaquninejad , Y.,

When the objective is quick detection both small and large shifts in the process mean with normal distribution, the generalized likelihood ratio (GLR) control charts have better performance as compared to other control charts. Only the fixed parameters are used in Reynolds and Lou’s presented charts. According to the studies, using variable parameters, detect process shifts faster than fixed pa...

2015
Dongsheng Zhou Yaojun Zhang Li Xu Zhongguo Zhou Junting Huang Minshan Chen

Conflict that the derived neutrophil lymphocyte (dNLR) has prognostic value in patients with a variety of cancers exists. The aim of the present study was to devise a monocyte/granulocyte to lymphocyte ratio (M/GLR) which counts as (white cell count - lymphocyte count) to lymphocyte count, and verify its prognostic value in patients with hepatocellular carcinoma (HCC). 1061 HCC patients were re...

Journal: :Molecular biology of the cell 2007
Peter Juo Tom Harbaugh Gian Garriga Joshua M Kaplan

The proline-directed kinase Cdk5 plays a role in several aspects of neuronal development. Here, we show that CDK-5 activity regulates the abundance of the glutamate receptor GLR-1 in the ventral cord of Caenorhabditis elegans and that it produces corresponding changes in GLR-1-dependent behaviors. Loss of CDK-5 activity results in decreased abundance of GLR-1 in the ventral cord, accompanied by...

Journal: :The Journal of neuroscience : the official journal of the Society for Neuroscience 2003
Jacqueline K Rose Karla R Kaun Sylvia H Chen Catharine H Rankin

Long-term memory for habituation to tap in Caenorhabditis elegans depends on glr-1, a homolog of mammalian non-NMDA glutamate receptors; mutations in glr-1 blocked long-term memory formation. Green fluorescent protein (GFP) constructs were used to visualize glr-1 expression in the interneurons of the mechanosensory circuit and synaptobrevin in the tap sensory neurons of trained and untrained wo...

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