introduction spatial studies as the main tools for the detailed study of all tangible and intangible aspects of regions have special ranks among all kinds of planning. the conformity of this organization with physical environment forms the spatial structure of which is usually observed as a distributed and isotropic spatial structure, focus and polar, unbalanced and haphazard, random and balanc...

purpose: scorpions in the middle eastern countries are known as the most widely spread poisonous creatures that cause casualties and death to human being and domestic animals. these creatures are distributed and well established in subtropical regions. among sixteen iranian islands in the persian gulf, kish island is the focus of important internal and foreign industrial and commercial activit...

Estimation of Distribution Algorithms (EDAs) are implemented mainly by the three steps: selecting the promising subset from the current population, modeling the distribution of the selected population and sampling from the estimated model. Modeling and sampling are key steps of EDAs. They are also research topic of copula theory to represent the multivariate joint distribution by a copula and t...