نتایج جستجو برای: function method

تعداد نتایج: 2675204  

Journal: :bulletin of the iranian mathematical society 2012
b. ‎babayar-razlighi karim ivaz m. r. mokhtarzadeh a. n. badamchizadeh

we reduce the two phase stefan problem with kinetic to a system of nonlinear volterra integral equations of second kind and apply newton's method to linearize it. we found product integration solution of the linear form. sufficient conditions for convergence of the numerical method are given and their applicability is illustrated with an example.

Journal: :iranian journal of chemistry and chemical engineering (ijcce) 2009
mohammad hossein ghazanfari davood rashtchian riyaz kharrat shapour vossoughi

in this work a glass micromodel which its grains and pores are non-uniform in size, shape and distribution is considered as porous medium. a two-dimensional random network model of micromodel with non-uniform pores has been constructed. the non-uniformity of porous model is achieved by assigning parametric distribution functions to pores throat and pores length, which was measured using image a...

Journal: :مهندسی عمران مدرس 0
امیررضا ممدوحی دانشگاه تربیت مدرس محمود صفارزاده دانشگاه تربیت مدرس، سیاوش شجاعت دانشگاه ایالتی اوئیزیانا

capacity of a road facility as an important characteristic in transportation and traffic studies is defined as the maximum rate of flow that could be held by that facility, which has been supposed to have a constant and certain value. this assumption, although necessary for most traffic studies, has also caused some problems, like that of demand exceeding capacity in many road facilities. resea...

Journal: :computational methods for differential equations 0
mohammad nabati basic of sciences, abadan faculty of petroleum engineering, petroleum university of technology, abadan, iran mahdi jalalvand department of mathematics, faculty of mathematical sciences and computer shahid chamran university, ahvaz, iran

sinc-galerkin method based upon double exponential transformation for solving troesch's problem was given in this study. properties of the sinc-galerkin approach were utilized to reduce the solution of nonlinear two-point boundary value problem to same nonlinear algebraic equations, also, the matrix form of the nonlinear algebraic equations was obtained.the error bound of the method was fo...

Journal: :international journal of nonlinear analysis and applications 2015
r. farokhzad rostami s.a.r. hoseinioun

in this paper, we obtain the general solution and the generalized  hyers--ulam--rassias stability in random normed spaces, in non-archimedean spacesand also in $p$-banach spaces and finally the stability viafixed point method for a functional equationbegin{align*}&d_f(x_{1},.., x_{m}):= sum^{m}_{k=2}(sum^{k}_{i_{1}=2}sum^{k+1}_{i_{2}=i_{1}+1}... sum^{m}_{i_{m-k+1}=i_{m-k}+1}) f(sum^{m}_{i=1...

Journal: :روانشناسی سلامت 0
مینا مجتبایی استادیار،دانشگاه آزاد اسلامی، رودهن، ایران هایده صابری استادیار،دانشگاه آزاد اسلامی، رودهن،ایران عزیزه علیزاده روانشناس

abstractthe role of sexual – self schema and body imag on women sexual function introduction: the aime of the present study is to investigate the role of sexual self-schema and body image on sexual function of married female nurses....... method: statistical population of the present study consist of all married female nurses of tehran government hospitals. from which 200 individuals were selec...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه صنعتی امیرکبیر(پلی تکنیک تهران) - دانشکده ریاضی و کامپیوتر 1387

توابع ماتریسی نقش گسترده و گوناگونی در شاخه های مختلف علوم و مهندسی دارد، که از آن جمله مر توان به کاربرد آن در مکانیک کوانتوم، حل عددی معادلات دیفرانسیل پاره ای و نظریه کنترل مدرن اشاره کرد. گیریم a یک ماتریس یک بردار n بعدی و f تابع تحلیلی بر دامنه ای شامل طیف a می باشد. در این پایان نامه ابتدا روش های گوناگونی مبتنی بر روش های چند جمله ای برای محاسبه تابع ماتریس ارایه شده است. در اغاز با است...

Journal: :نظریه تقریب و کاربرد های آن 0
شادان صدیق بهزادی دانشگاه آزاد اسلامی واحد قزوین

in this paper, he's highly proli c variational iteration method is applied ef-fectively for showing the existence, uniqueness and solving a class of singularsecond order two point boundary value problems. the process of nding solu-tion involves generation of a sequence of appropriate and approximate iterativesolution function equally likely to converge to the exact solution of the givenpr...

Journal: :journal of sciences, islamic republic of iran 2011
k. ivaz

stefan problem with kinetics is reduced to a system of nonlinear volterra integral equations of second kind and newton's method is applied to linearize it. product integration solution of the linear form is found and sufficient conditions for convergence of the numerical method are given. an example is provided to illustrated the applicability of the method.

Journal: :international journal of management and business research 2013
m. h. kamfiroozi a. bonyadinaeini

an enterprise resource planning (erp) software is needed for industries and companies that want to develop in future. many of the manufactures and companies have a problem with erp software selection. an inappropriate selection process can affect both the implementation and the performance of the company significantly. although several models are proposed to solve this problem many of them did n...

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