نتایج جستجو برای: by combining positive mathematical programming and maximum entropy technique

تعداد نتایج: 17922865  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه سیستان و بلوچستان - دانشکده مهندسی 1392

flow in natural river bends is a complex and turbulent phenomenon which affects the scour and sedimentations and causes an irregular bed topography on the bed. for the reason, the flow hydralics and the parameters which affect the flow to be studied and understand. in this study the effect of bed and wall roughness using the software fluent discussed in a sharp 90-degree flume bend with 40.3cm ...

Journal: :international journal of agricultural management and development 2013
gholamreza zamanian mehdi jafari shahram saeedian

the scarcity of water resources and supply resources limitation, have caused an increasing gap between water supply and demand specially in recent decades in almost all regions of the globe. one of the best known solutions proposed by the economists is using the different water pricing approaches thereby obtaining the optimal allocation and social justice. to this purpose, this paper uses the p...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شیراز - دانشکده علوم 1391

in this research we have studied the effect of some transition-metals (cu, ag and au) substitutions on two-electron reduction potential of flavins by application of dft method. all geometries have been optimized at blyp level of theory and “6-31+g** + lanl2dz” mixed basis set. the frequency job at the same method and basis sets has been performed to obtain gibbs free energy of compounds. it h...

2004
ANDERS BLOMQVIST

During the past years Lindquist and coworkers have formulated and studied the so called generalized maximum entropy problem. It generalizes the maximum entropy problem and thus includes problem like the Carathéodory extension problem and the Nevanlinna-Pick interpolation problem. A central ingredient in the theory is the dual (in mathematical programming sense) convex optimization problem. This...

Journal: :فیزیک زمین و فضا 0
حکیم اسماعیلی اوغاز دانشجوی دکتری ژئوفیزیک، دانشگاه آزاد اسلامی، واحد علوم و تحقیقات، تهران محمدعلی ریاحی دانشیار، گروه فیزیک زمین، مؤسسة ژئوفیزیک، دانشگاه تهران، ایران سعید هاشمی طباطبائی استادیار، بخش ژئوتکنیک، مرکز تحقیقات ساختمان و مسکن، تهران، ایران

bin size is one of the fundamental and key parameters in 3d land seismic operation design and has an important role in the determination and calculation of other design parameters. therefore, optimization of this parameter is vital. in this study a new method for optimization of the bin size has been used. the optimization algorithm is linear and based on a mathematical model. due to the relati...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشکده اصول الدین 1393

the present paper deals with criminal issues. for example, legal injunction on the necessity of returning a deposit has a legal nature and legal injunction on the punishment of those who breach the trust has a criminal nature. existing social issues are the basis of classification of some instances into the issue, some of which are based on variation and others on quality. therefore, the motiva...

2001
Fabian J. Theis Christoph Bauer Carlos García Puntonet Elmar Wolfgang Lang

Marques and Almeida [9] recently proposed a nonlinear data seperation technique based on the maximum entropy principle of Bell and Sejnowsky. The idea behind is a pattern repulsion model alluding to repulsion of physical particles in a restricted system which leads to a uniform distribution, hence a maximum entropy, under certain conditions to the energy function. In this paper, we want to revi...

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