نتایج جستجو برای: dierential equation

تعداد نتایج: 229764  

2015
Grace C. Limandjaja Lenie J. van den Broek Taco Waaijman Rik J. Scheper Frank B. Niessen Susan Gibbs

Hypertrophic and keloid scars are the result of unknown abnormalities in the wound healing process. The aim of this study was to develop physiologically relevant, human in vitro abnormal scar models for hypertrophic and keloid scars and compare these to normotrophic scars and normal skin to identify dierences in the pathogenesis of different scars. Keratinocytes and broblasts from normal skin a...

2007
Takahiro Kawai Daniele C. Struppa

Introduction This paper tries to shed some light on the very classical topic of overconvergence for Dirichlet series, by employing results in the theory of innite order dier-ential operators with constant coecients ([3], [13]). The possibility of linking innite order dierential operators with gap theorems and related subjects such as overconvergence phenomena was rst suggested by Ehrenpreis in ...

Journal: :bulletin of the iranian mathematical society 2011
j. l. bona h. chen s. m. sun b.-y. zhang

2013
Thi Nhu Thuy NGUYEN

In this thesis, we study uniform controllability properties of semi-discrete approximations for parabolic systems. In a first part, we address the minimization of the Lq-norm (q > 2) of semidiscrete controls for parabolic equation. As shown in [LT06], under the main approximation assumptions that the discretized semigroup is uniformly analytic and that the degree of unboundedness of control ope...

Journal: :journal of chemical and petroleum engineering 2012
peyman pourafshary monir taherkhani

diffusivity equation commonly used for pressure distribution prediction in porous media results from substituting equation of state and continuity equation in navier-stokes momentum equation. from mathematical point of view this equation format shows infinite propagation speed for pressure pulse through porous media, which is physically impossible. this issue may caused by numerous assumptions ...

In this paper, we intend to solve special kind of ordinary differential equations which is called Heun equations, by converting to a corresponding stochastic differential equation(S.D.E.). So, we construct a stochastic linear equation system from this equation which its solution is based on computing fundamental matrix of this system and then, this S.D.E. is solved by numerically methods. Moreo...

پایان نامه :دانشگاه آزاد اسلامی - دانشگاه آزاد اسلامی واحد شاهرود - دانشکده مهندسی شیمی 1393

چکیده: آنچه که در این تحقیق به آن پرداخته خواهد شد ، حل معادلاتِ دینامیکِ سیالات هادی جریان الکتریکی(mhd equation) برروی استوانه ای از جنس غشای نفوذپذیر، در حضور میدان مغناطیسی همراه با انتقال جرم می باشد.پس معادلات انتقال جرم و (mhd) را در مختصات استوانه ای استخراج کرده و حل تشابهی برای آنها انجام می دهیم. برای استخراج و حل معادلات مذکور فیزیک مساله را درنظر می گیریم ، که استوانه ای است از جنس ...

Journal: :international journal of nonlinear analysis and applications 2012
y. j. cho c. park m. eshaghi gordji

won{gil park [won{gil park, j. math. anal. appl., 376 (1) (2011) 193{202] proved the hyers{ulam stability of the cauchy functional equation, the jensen functional equation and the quadraticfunctional equation in 2{banach spaces. one can easily see that all results of this paper are incorrect.hence the control functions in all theorems of this paper are not correct. in this paper, we correctthes...

1999
CHRISTOPHER J. ARMITAGE MARK CONNER PAUL NORMAN

The theories of reasoned action and planned behaviour continue to receive considerable research attention, despite criticisms of their `asocial' conceptualisation and the rational decision-making approach. Two studies were designed to assess the impact of induced mood on condom use (Study 1) and food choice (Study 2). Both studies provided support for application of the theory of reasoned actio...

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