field experiment was conducted to determine the economic threshold for spraying of flubendiamide against the brinjal shoot and fruit borer. flubendiamide was applied based on 10 thresholds including 2% shoot infestation, 5% shoot infestation, first fruit set + 2% fruit infestation, first fruit set + 5% fruit infestation, 2% fruit infestation, 5% fruit infestation, 2% shoot + 2% fruit infestatio...

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...

Abstract Drawing upon recent studies that empirically estimate both the benefits and costs of trade, this paper addresses a simple important question: By how much do increased global trade outweigh costs? To best our knowledge, is first attempt to answer question at World Bank income-grouping levels using estimated relationships from cost literature. Using structural gravity model, we simulate ...

abstractthe monitoring of the management of vannamei shrimp farms in the gomishan shrimp site in the best way and to its development. the objectives of the project were the calculation of growth indices, food conversion ratio.the final production of vannamei, benefit-cost or gross benefit of each farm.this study carried out in in 1391( 2012 ).data collection done through questionaries personall...

Although carp is still widely sold and used in its fresh form, a range of value additions may also be observed. It is essential to know the development and management of a carp farm production costs and their evolution. In Iran, warm-water fish farming is based on common, silver, grass, and bighead carps. The carp is easy to rise in hatcheries in very large numbers at little cost, and is distri...