this study investigated the effects of land size and two leased and private farming systems of machinery on economic efficiency and factors such as total production cost per hectare (ratio of total cost of agricultural inputs and operations to farm size), total income (ratio of product and byproduct value to farm size), yield (ratio of crop production to farm size) and degree of mechanization f...

This study based on investigation for integration wind power into conventional power system with its impact on fossil fuel generators and their generation management. Wind power as environmental friendly energy source can reduce the operational cost of the system due to considering no cost for energizing the generator in comparing with fossil fuel generators. However due to unpredictable nature...

The main purpose of this research is to determine the generation quantity of each generator in a power system. In this way, not only will the electricity demanded by the system be supplied, but the cost of fuel along with the level of pollution can be minimized. Obviously, calculation of the optimal layout of power plants with the aim of minimizing fuel costs and pollutants level contributes to...

The main purpose of this research is to determine the generation quantity of each generator in a power system. In this way, not only will the electricity demanded by the system be supplied, but the cost of fuel along with the level of pollution can be minimized. Obviously, calculation of the optimal layout of power plants with the aim of minimizing fuel costs and pollutants level contributes to...

Previous research has shown that economic growth should help to reduce the rate of poverty. However, a number of recent studies find that the economic expansion of the 1980’s had no statistically significant effect on aggregate poverty. We show that a Fourier approximation provides a better empirical model of poverty than the standard linear model. It is noteworthy that the nonlinear specificat...

This paper provides an overview of the relationship between entrepreneurship university spin-off activity and economic growth. It suggests the need for a diversified university structure, and that spin-offs are a misleading measure of the most important activity for technology transfer which remains the training and education of highly qualified scientists and technologists. It argues that a li...