Density-dependent selection and the limits of relative fitness

Evolution in population parameters: density-dependent selection or density-dependent fitness?

Density-dependent selection is one of earliest topics of joint interest to both ecologists and evolutionary biologists and thus occupies an important position in the histories of these disciplines. This joint interest is driven by the fact that density-dependent selection is the simplest form of feedback between an ecological effect of an organism's own making (crowding due to sustained populat...

the effect of traffic density on the accident externality from driving the case study of tehran

در این پژوهش به بررسی اثر افزایش ترافیک بر روی تعداد تصادفات پرداخته شده است. به این منظور 30 تقاطع در شهر تهران بطور تصادفی انتخاب گردید و تعداد تصادفات ماهیانه در این تقاطعات در طول سالهای 89-90 از سازمان کنترل ترافیک شهر تهران استخراج گردید و با استفاده از مدل داده های تابلویی و نرم افزار eviews مدل خطی و درجه دوم تخمین زده شد و در نهایت این نتیجه حاصل شد که تقاطعات پر ترافیک تر تعداد تصادفا...

Competitive Relative Performance and Fitness Selection for Evolutionary

Competitive Relative Performance and Fitness Selection for Evolutionary Robotics

Nelson, Andrew Lincoln. Competitive Relative Performance and Fitness Selection for Evolutionary Robotics. (Under the direction of Dr. Edward Grant.) 1 Evolutionary Robotics (ER) is a field of research that applies evolutionary computing methods to the automated design and synthesis of behavioral robotics controllers. In the general case, reinforcement learning (RL) using high-level task perform...

the effect of creative writing instruction on lexical density of advanced efl learners writing

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