نتایج جستجو برای: suitable cropping pattern can be achieved
تعداد نتایج: 5328133 فیلتر نتایج به سال:
this study was conducted to determine timeliness costs in using machinery and their effects on farmers’ revenues. in addition, optimum cropping pattern was compared with the existing one assuming removal of timeliness cost. for the purpose of the study, mixed integer and linear programming methods were used. the study was conduced in marvdasht region in southern iran. the data were collected th...
in recognition of the value and limitations of available water resources in agriculture and the occurrence of periodic drought in iran, water conservation and optimal usage of available water is essential. the main objective of this study was to optimize field water management and cropping patterns using deficit irrigation. the effect of reducing water consumption on different growth stages usi...
abstract the third millennium has started, but the world is facing with serious challenges in achieving international security and peace. various human rights violations have lead the states to find means to protect human rights. also article 55 of the united nations charter introduces the respect to human rights and fundamental freedom as the most suitable ways to realize peace and security. ...
in the area of automotive engineering there is a tendency to more electrification of power train. in this work control of an induction machine for the application of electric vehicle is investigated. through the changing operating point of the machine, adapting the rotor magnetization current seems to be useful to increase the machines efficiency. in the literature there are many approaches wh...
Abstract Climate change poses a fundamental threat to agriculture within the Nile basin due magnitude of projected impacts and low adaptive capacity. So far, climate on for have mostly been assessed single-cropping systems, which may bias results considering that is dominated by different cropping with about one-third crop area under double cropping. In this study, we simulate single- double-cr...
nowadays in trade and economic issues, prediction is proposed as the most important branch of science. existence of effective variables, caused various sectors of the economic and business executives to prefer having mechanisms which can be used in their decisions. in recent years, several advances have led to various challenges in the science of forecasting. economical managers in various fi...
Abstract An analysis was carried out to show whether the Warmi?sko-Mazurskie Voivodeship (Poland) could become energy self-sufficient. The technical potential of electricity and heat from renewable sources has been calculated. calculated values are 6.93 TWh/year 15.84 PJ/year heat—these amounts would ensure independence Voivodeship. is an example transformation towards “green” energy, it shows ...
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