In some instances, it is inevitable that large amounts of potentially hazardous chemicals like chlorine gas are stored and used in facilities in densely populated areas. In such cases, all safety issues must be carefully considered. To reach this goal, it is important to have accurate information concerning chlorine gas behaviors and how it is dispersed in dense urban areas. Furthermore, mainta...

Air pollution is one of the most important problems in urban areas that always threaten citizen's health. Photochemical smog is one of the main factors of air pollution in large cities like Tehran. Usually smog is not only a part of nature, but is being analyzed as an independent matter, which highly affects on the nature. It has been used as relationship between atmospheric elements such as te...

abstract   background: inequalities in health are ever increasing among different communities of either affluent or disadvantaged especially in urban areas. to identify and address inequalities in health and its determinants among societies, urban health equity assessment and response tool (urban heart) in four 'policy domains' related to social determinants of health, has been developed by who...

Despite the tremendous progress in controlling measles in China, there was measles outbreak in Beijing which was a result of cluster of unvaccinated people or people failure to vaccinate. In order to accelerate measles control efforts and achieve and high levels of measles immunity, it is helpful to implement more targeted management strategy.

Recent escalations in Internet development and volume of data have created a growing demand for large-capacity storage solutions. Although Cloud storage has yielded new ways of storing, accessing and managing data, there is still a need for an inexpensive, effective and efficient storage solution especially suited to big data management and analysis. In this paper, we take our previous work one...

The theme of this book is that delinquency must be understood as a persistent subculture within the larger society of big cities.