نتایج جستجو برای: linear superposition method

تعداد نتایج: 2002634  

Journal: :Proceedings of the American Mathematical Society 1974

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1998
J. F. Cariñena G. Marmo J. Nasarre Miguel Catalán

Group theoretical methods are used to study some properties of the Riccati equation, which is the only differential equation admitting a nonlinear superposition principle. The Wei–Norman method is applied for obtaining the associated differential equation in the group SL(2,R). The superposition principle for first order differential equation systems and Lie-Scheffers theorem are also analysed f...

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پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه پیام نور استان مازندران - دانشکده ریاضی 1390
شیدا بابایی, جواد وحیدی, سیامک فیروزیان,

abstract this thesis includes five chapter : the first chapter assign to establish fuzzy mathematics requirement and introduction of liner programming in thesis. the second chapter we introduce a multilevel linear programming problems. the third chapter we proposed interactive fuzzy programming which consists of two phases , the study termination conditions of algorithm we show a satisfac...

15 صفحه اول
Journal: :iranian journal of medical physics 0
asghar mesbahi department ofmedical physics, medical school, tabriz university of medical sciences,,tabriz, iran. 2- department ofradiation oncology, imam hospital, tabriz, iran. ismail zergoug 3-department of radiotherapy, emir abdelkaderanti-cancer center, oran, algeria

introduction radiotherapy with small fields is used widely in newly developed techniques. additionally, dose calculation accuracy of treatment planning systems in small fields plays a crucial role in treatment outcome. in the present study, dose calculation accuracy of two commercial treatment planning systems was evaluated against monte carlo method. materials and methods siemens once or linea...

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Journal: :Physical Review Letters 2002

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Journal: :Journal of Plasma Physics 2009

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پایان نامه :دانشگاه آزاد اسلامی - دانشگاه آزاد اسلامی واحد یزد - دانشکده شیمی 1392
علی محمد آخوندی خلفی, مسعود رضا شیشه بر,

in this study, a simple, rapid and selective method was developed for the determination of dexamethasone. the proposed method is based on inhibitory effect of dexamethasone on the oxidation of orange-g by bromate in sulfuric acid media. the reaction was followed spectrophotometrically at 478.5 nm (?max). under optimum experimental conditions, (72.6 ?mol l-1 of orange-g, 0.76 mol l-1 of h2so4, 0...

Journal: :Energies 2021

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Journal: :Reviews in Mathematical Physics 2006

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Journal: :Coastal Engineering Proceedings 2020

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