Natural disasters, among the issues and problems facing the villagers, can endanger the daily lives of villagers from various economic, social and environmental dimensions. The earthquake has always existed as a repeatable and unpredictable phenomenon during the life of the planet. The villages are more vulnerable than others. When the village is destroyed by the earthquake, it changes the vill...

sange siyah dam is located two kilometers down the kabod khani village. the environ of ghorrve city in kurdestan province. this is an clay core dam. in this dam instrumentation is performed in three section and consist of electrical piezometers, total pressure cells, settlement cells and so on. the main objective of instrumentation is to control the behavior of dam body and foundation, end else...

the methods which are used to analyze microstrip antennas, are divited into three categories: empirical methods, semi-empirical methods and full-wave analysis. empirical and semi-empirical methods are generally based on some fundamental simplifying assumptions about quality of surface current distribution and substrate thickness. thses simplificatioms cause low accuracy in field evaluation. ful...