نتایج جستجو برای: artificial or cultural modifications
تعداد نتایج: 3892207 فیلتر نتایج به سال:
there are many approaches for solving variety combinatorial optimization problems (np-compelete) that devided to exact solutions and approximate solutions. exact methods can only be used for very small size instances due to their expontional search space. for real-world problems, we have to employ approximate methods such as evolutionary algorithms (eas) that find a near-optimal solution in a r...
The work presents an artificial compressibility method applied to incompressible Navier-Stokes equations for steady as well as for unsteady flows. Two modifications of unsteady numerical solution by an implicit finite volume method are considered. First one uses large artificial compressibility parameter and the iterative solution approximates unsteady evolution of flow. The second approach int...
Bedau and Packard have defined evolutionary activity statistics that illuminate the adaptive evolutionary creativity of biological evolution. The statistics enable us to visualize adaptive evolutionary dynamics and to measure the intensity and extent of adaptive evolution, and can be used to define qualitatively different kinds of evolving systems. Here we describe how to apply evolutionary act...
Background and aims: Work environment illumination affects on productivity, accidents, and workers' physical and mental health. Therefore, illumination evaluation and determine workstations which need light modification could be helpful to develop workers' health and safety. Methods: This study was performed in one of the biggest company in Zanjan province to evaluate illumination depending ...
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