this study was conducted to evaluate the share of cost factors affecting on final cost of broiler live weight per kilogram in tehran province. data were collected through questionnaires. farms were divided to three cost ranges: less than 35,000, between 35,000 to 40,000, and over 40000 rails based on production cost per kg of live weight. in this study, water and additives, staff, vaccines, tra...

abstract in this research, the comparative advantage of cereals including: wheat, barley and corn in cities of kerman, bardsir and baft was investigated by using domestic resource cost (drc), social cost benefit (scb) and effective protection coefficient (epc) index during 2005-2006 and effect of exchange rate changes, price changes and products costs on comparative advantage, were investigated...

In this paper we analyze periodic maintenance strategies for managing replicated objects in mobile wireless environments. Under periodical maintenance strategies, the system periodically checks local cells to determine if a replicated object should be allocated or deallocated in a cell to reduce the access cost. We develop a performance model based on Petri nets that considers the missing-read ...

This paper presents a method concerning the integration of the benefit/cost analysis and the real genetic algorithm with various elements of reservoir dam design. The version 4.0 of HEC-RAS software and Hydro-Rout models have been used to simulate the region and flood routing in the reservoir of the dam, respectively. A mathematical programming has been prepared in MATLAB software and linked wi...