نتایج جستجو برای: روش تکراری hss
تعداد نتایج: 372074 فیلتر نتایج به سال:
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...
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...
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...
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...
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...
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...
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...
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...
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 ...
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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