energy method of evaluation is widely employed in analyzing problems associated with sustainable agriculture. in this study, energy ratio (er) of dryland wheat for three regions of eghlid township was quantified. the total cropping area of eghlid is nearly 8282 hectares comprised of: khosrowshirin (5000 ha), sedeh (1682 ha) and dezhkord (1600 ha). the corresponding values of wheat yield in thes...

introduction recognition, measurement and improvement in quality of life are the main purpose of the research. since 1960s, the quality of life has become as one of the favorite subjects in social science. because in this decade it was determined that economic progress does not improve the life of people. the quality of the life of people and rural places depend on many factors, including emplo...

The international business literature presents an interesting intellectual puzzle regarding the effect of political instability and political risk on foreign direct investment (FDI). Survey evidence shows that multinational executives take into account political instability in making investment decisions, while econometric studies produce conflicting findings. In this paper, I offer a new theor...

introduction the distribution and dispersion of parks and green spaces is of paramount importance in urban and rural areas. as an indicator in development of nations, green space has environmental, social, cultural, economic and physical dimensions. to be able to perform its roles and functions successfully, green space needs to be properly positioned. this requires spatial suitability analysis...

1. introduction climate is a large system which is produced due to the relation and action between other large systems. if a change occurs in one of these systems, other systems will coordinate themselves with the change fast or slowly. the consequences of this coordination will impress the system that is starter of this change and an endless continuum of the links connects these systems togeth...