نتایج جستجو برای: evolution process
تعداد نتایج: 1607344 فیلتر نتایج به سال:
Precisely describing the formation and evolution rules of coal-rock fracturing crack have great value on reservoir fracturing improvement and highly efficient mining of coal bed methane well. In this paper, a non-linear dynamic method is used to study crack damage evolution behavior of coal-rock fracturing. Considering distribution characteristics of natural cracks in coal-rock, and based on da...
Introduction: In the era of increasing development of electronic technology, using technology and making favorable changes in student assessment have a prominent role. The purpose of this study was to review the evolution process of student assessment methods in medical education and report its process in Iran based on the 8-step model) In Line with the Package for Medical Sciences Assessment S...
abstract because of the many geopolitical, geo economical and geo strategically potentials and communicational capabilities of eco region, members can expand the convergence and the integration in base of this organization that have important impact on members development and expanding peace in international and regional level. based on quality analyzing of library findings and experts interv...
in this study, a hybrid algorithm is presented to tackle multi-variables robust design problem. the proposed algorithm comprises neural networks (nns) and co-evolution genetic algorithm (cga) in which neural networks are as a function approximation tool used to estimate a map between process variables. furthermore, in order to make a robust optimization of response variables, co-evolution algor...
Background & Aim: Nowadays, one of the most important indicators in evaluating the performance of hospital services is the satisfaction of patients with the provided services. The purpose of this study was to evaluate patients' satisfaction with hospital services after health evolution plan in hospitals affiliated to Kermanshah University of Medical Sciences. Methods: This descriptive and cros...
The shape optimization of gravity dam is posed as an optimization problem with goals of minimum value of concrete, stresses and maximum safety against overturning and sliding need to be achieved. Optimally designed structure generally saves large investments especially for a large structure. The size of hydraulic structures is usually huge and thus requires a huge investment. If the optimizatio...
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