نتایج جستجو برای: روش تکراری hss

تعداد نتایج: 372074  

ژورنال: :مکانیک هوافضا 0
مقیمی مهدی دانشکده مهندسی مکانیک، دانشگاه علم و صنعت ایران خرمی شاد هادی مساح حمیدرضا مرتضایی سیدمرتضی

در این مقاله مطالعه ای تحلیلی بر جریان روی صفحه تخت به روش وردشی تکراری انجام شده است. در این روش به منظور بدست آوردن فانکشنال از ضرایب لاگرانژ در یک چرخه تکراری استفاده شده است. به کمک روش محاسبات وردشی این ضرایب بصورت بهینه قابل تعیین می باشد. روش وردشی تکراری برای حل مساله بلازیوس بصورت تحلیلی تقریبی بکار گرفته شده و نتایج حاصل با نتایج موجود عددی و تحلیلی واهم نهشتی ادومین مقایسه شده است. د...

Journal: :NeuroImage 2013
Anita Cservenka Megan M. Herting Kristen L. Mackiewicz Seghete Karen A. Hudson Bonnie J. Nagel

Previous research has shown that personality characteristics, such as sensation seeking (SS), are strong predictors of risk-taking behavior during adolescence. However, the relationship between levels of SS and brain response has not been studied during this time period. Given the prevalence of risky behavior during adolescence, it is important to understand neurobiological differences in rewar...

2017
H. Noormohammadi H. Sadeghi Goughery

We generalize the accelerated Hermitian and skew-Hermitian splitting (AHSS) iteration methods for large sparse saddle-point problems. These methods involve four iteration parameters whose special choices can recover the preconditioned HSS and accelerated HSS iteration methods. Also a new efficient case is introduced and we theoretically prove that this new method converges to the unique solutio...

1998
Diego Sona Alessandro Sperduti Antonina Starita

In this paper we present comparative results of our constructive algorithm versus the HSS. Specifically, we tested the HSS algorithm using both the original version based on the two-sided tangent distance, and a new version based on the one-sided tangent distance. Empirical results over the NIST-3 database show that the TD-Neuron is superior to SVD based algorithms since it reaches a better tra...

Journal: :Inf. Services and Use 2013
Rosa di Cesare Daniela Luzi Silvia Giannini

The paper describes a methodology used to analyze the editorial production of CNR Institutes belonging to the Department of Humanities and Social Sciences (HSS). This analysis is considered a pre-requisite to design a feasibility study to develop an e-publishing service tailored to HSS. To reach this aim the paper describes in particular the characteristics of currently published products defin...

Journal: :Applied Mathematics and Computation 2009
Rong Zhou Xiang Wang Xiao-Bin Tang

This paper is concerned with a generalization of the Hermitian and skew-Hermitian splitting iteration for solving positive definite, non-Hermitian linear systems. It is shown that the new scheme has some advantages over the standard HSS method, and can be used as an effective preconditioner for certain linear systems in saddle point form. Numerical experiments using discretizations of incompres...

ژورنال: :صوت و ارتعاش 0
علیرضا اردکانی استادیار دانشگاه بین المللی امام خمینی (ره) ابراهیم سعادتفر کارشناس ارشد مهندسی عمران/ دانشگاه بین المللی امام خمینی (ره)

لرزش­های ناشی از حرکت قطار ممکن است باعث ناراحتی ساکنین ساختمان­های کنار ریل شود. از طرفی ممکن است سطح لرزش­ها به اندازه­ای باشد که آسیب­هایی در نازک­کاری ساختمان و تاسیسات زیر بنایی مشاهده شود. از راه­کار­های کاهش لرزش­ها می­توان به روش ترانشه[i] باز اشاره کرد. با توجه به توسعه روش­های عددی در زمینه ژئوتکنیک و استفاده از مدل رفتاری در مدل­سازی های مختلف، در این راستا در تحقیق حاضر با استفاده ا...

2016
Kai Chen Qiang Yao Ju Sun Zhi-fei He Lan Yao Zhi-yong Liu

BACKGROUND In recent years, China's healthcare reforms and related studies have drawn particular global attention. The main objective of this study is to evaluate quantitatively the publication trends and collaboration performance of China in healthcare science and services (HSS) research. METHODS Scientometric methods and visualization technology were used to survey the growth and developmen...

Journal: :SIAM J. Scientific Computing 2006
Zhong-Zhi Bai Gene H. Golub Chi-Kwong Li

The optimal parameter of the Hermitian/skew-Hermitian splitting (HSS) iteration method for a real 2-by-2 linear system is obtained. The result is used to determine the optimal parameters for linear systems associated with certain 2-by-2 block matrices, and to estimate the optimal parameters of the HSS iteration method for linear systems with n-by-n real coefficient matrices. Numerical examples ...

2017
Melek Kechida Sondes Yaacoubi Ahmed Zrig Walid Jomaa Rim Klii Sonia Hammami Ines Khochtali

Background Hughes-Stovin Syndrome (HSS) is a rare clinical disorder characterized by deep venous thrombosis and multiple pulmonary and/or bronchial aneurysms. Aneurysms in systemic circulation can also be seen. Case presentation We report the first case of HSS with aortic aneurysm in a 55-year-old man who initially presented with deep venous thrombosis. The diagnosis of HSS revealing Behçet's...

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