sports spaces are the most important services in the city, that have a significant role in raising physical and mental health citizens. after studying the existing sports spaces in the neighborhood, district, region and city of zanjan, determined levels and percapita sport spaces of zanjan city. a total of 19 spaces sports zanjan city, 9 sport spaces neighborhood-scale, 6 sport spaces district ...

Sense of security is one of the basic human needs and the most influential social components of urban life. Perhaps it can be the most important factor in promoting or hindering walking in cities. In other words, if the neighborhoods of a city have a good level of security, the presents of pedestrians can be seen in local streets even in the late night hours. In this regard and to the answer to...

In this paper, we propose a new neighborhood semantics for contingency logic, by introducing a simple property in standard neighborhood models. This simplifies the neighborhood semantics given in Fan and van Ditmarsch [4], but does not change the set of valid formulas. Under this perspective, among various notions of bisimulation and respective Hennessy-Milner Theorems, we show that c-bisimulat...

conclusions high hev seroprevalence (16.7%) was observed among the blood donors in bushehr province. it appears that exposure to hev increases with age; although, more people should be examined. results overall, 105 (16.7%) blood samples were positive for hev-specific-igg antibodies, while 523 (83.8%) were negative. the presence of anti-hev igg was not associated with gender; however, it was co...

extended abstractintroductiontoday, large number of world’s major cities is located in coastal environments these towns have and all important positions in the economic, cultural and social functions. coastal areas and the cities located in they are economically very important in terms of the environment, sensitive to many of factors influencing and physically, against a variety of natural haza...

growing population and increasing urbanization has led to the expansion of informal settlements. informal settlements in developing countries, more than other urban tissues are exposed to various risks and natural disasters. this type of settlements, often develop and spread without regard to natural hazards, with no specific plan and no attention to regulations. expansion of informal settlemen...