نتایج جستجو برای: non linear optic

تعداد نتایج: 1742149  

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

seismic retrofit strategies have been developed in the past few decades following the introduction of new seismic provisions and the availability of advanced materials and methods. it can be observed that new approaches to deal with more lateral forces are more innovative and more energy absorbent. in line with this, there is a growing trend toward the use of steel shear walls as a system with ...

Journal: :International journal of ophthalmology 2017
Jia-Wen Ling Xue Yin Qian-Yi Lu Yi-Yi Chen Pei-Rong Lu

AIM To compare the optic disc blood flow of non-arteritic ischemic optic neuropathy (NAION) eyes with normal eyes. METHODS The optic disc blood flow densities of diagnosed non-acute phase NAION eyes (21 eyes, 14 individuals) and normal eyes (19 eyes, 12 individuals) were detected via Optovue optical coherence tomography angiography (OCTA). The optic disc blood flow was measured via Image J so...

Journal: :journal of current ophthalmology 0
حمید فشارکی hamid fesharaki فرزان کیان ارثی farzan kianersi شاهین شیوخی shahin shoyoukhi

purpose : to evaluate the therapeutic effect of posterior sub-tenon methyl prednisolone in anterior ischemic optic neuropathy, no class 1 study has shown any conclusive medical or surgical treatment for non-arteritic anterior ischemic optic neuropathy (naion). efficacy of systemic or intravitreal steroids was suggested by some studies. this study was performed to evaluate the efficacy and safet...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت مدرس 1389

abstract: country’s fiber optic network, as one of the most important communication infrastructures, is of high importance; therefore, ensuring security of the network and its data is essential. no remarkable research has been done on assessing security of the country’s fiber optic network. besides, according to an official statistics released by ertebatat zirsakht company, unwanted disconnec...

Journal: :International Journal of Innovative Research in Computer and Communication Engineering 2017

The use of a LED fiber-optic sensor to measure displacement and linear thermal expansion is described. It has a sensitivity of about 0.6 mV/mm, a resolution of 1.25 mm, and a dynamic rang of 400 mm for displacement measurements. For thermal expansion, it shows a sensitivity of about 3.5 mV/C, and the experimental linear expansion values are in agreement with those calculated. The reported senso...

Journal: :بینا 0
لیلا علیزاده قویدل l alizadeh ghavidel تهران - پاسداران - بوستان 9- بیمارستان لبافی نژاد - مرکز تحقیقات چشم مسعود سهیلیان m soheilian تهران - پاسداران - بوستان 9- بیمارستان لبافی نژاد - مرکز تحقیقات چشم شاهین یزدانی sh yazdani دانشگاه علوم پزشکی شهید بهشتی مهدی یاسری m yaseri دانشگاه علوم پزشکی شهید بهشتی

purpose: to evaluate the role of transvitreal optic neurotomy (ton) in the management of non-arteritic anterior ischemic optic neurotomy (naion). methods: sixteen eyes of 16 patients with recent onset naion (less than six weeks duration) were included in this single-masked randomized controlled trial. the patients were randomized to ton (8 eyes) versus observation alone (8 eyes). pre- and posto...

Journal: :journal of agricultural science and technology 2015
s. a. mohaddes s. m. fahimifard

in this study, application of adaptive neuro-fuzzy inference system (anfis) in forecasting three perspectives (1, 2, and 4 years) ahead of iran’s agricultural products export was compared with arima as the most common econometrics linear forecasting method. for this purpose, iran’s agricultural products export revenues related to 1959-2010, and forecast performance measures such as r2, mad, and...

2002
W. Adler B. Brors A. Kohlmann C. Schoch S. Schnittger T. Haferlach R. Eils Werner Adler

The Heidelberg Retina Tomograph (HRT) provides topographic images of the optic nerve head by scanning the eye with a 670nm laser. As a precondition to medical analysis, the optic nerve head has to be outlined manually in clinical practise. Swindale et al. (2000) suggest automated classification of HRT images by a non-linear approximation of the image using the fitted parameters of a non-linear ...

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