نتایج جستجو برای: low inputs systems

تعداد نتایج: 2312586  

Jafar Haghighat Negin Hosseingholizadeh Rassul Mohammadrezaei

Among the agricultural important factors, inputs are the most significant in agricultural production. This article aimed to examine the impact of government subsidy policies on production of one of the most strategic products, namely on production of one of the most strategic products, namely maize, in Iran. To achieve this goal, panel data for the nine provinces of Iran's major producers of ma...

S. Mamizadeh-Chatghayeh

The aim of this paper is the evaluation overall performance of buyer-supplier relationships.In some situations the cost of inputs in a buyer-supplier chain are available, on the other hand, achieving a low cost position is necessary for most businesses. And, in a buyer-supplier chain wants to know how assign inputs with the least cost. This paper introduces cost efficiency with same and dierent...

In the current century, agriculture sustainability and the reduction of environmental pressure are two main objectives of the management of agro-ecosystems that is challenged by energy inefficiency. In this respect, the present study assessed one of the most important planting systems in Sistan region by emergy analysis approach. It analyzed all inputs of greenhouse cucumber production system i...

A fundamental problem is the use of DEA in multistep or multilevel processes such as supply chain, lack of attention to processes’ internal communications in a way that the recent studies on DEA in the context of serial processes have focused on closed systems that the outputs of one level become the inputs of the next level and none of the inputs enter the mediator process. The present study a...

Journal: :international journal of industrial mathematics 0
s. kordrostami‎‎ department of mathematics, lahijan branch, islamic azad university, lahijan, ‎iran.‎ m. jahani sayyad ‎noveiri department of mathematics, lahijan branch, islamic azad university, lahijan, ‎iran.‎

data envelopment analysis (dea) is a mathematical technique to evaluate the performance of firms with multiple inputs and outputs. in conventional dea models, the efficiency scores of decision making units (dmus) with non-negative inputs and outputs are evaluated in a special period of time. however, in the real world there are situations wherein performance of firms must be evaluated in multip...

Journal: :Sustainability 2021

Cropping systems with legumes play key roles in farming sub-Saharan Africa. However, how commonly legume associations perform low input-systems is not well-known. Here, we studied four species used three rotation upland rice, i.e., groundnut monocropping, sorghum–cowpea intercropping, and velvet bean–crotalaria two fertilization managements on the previous manure alone or complemented mineral f...

Journal: :روش های عددی در مهندسی (استقلال) 0
محمدشاهرخی m. shahrokhi فرشته نعیم پور f. naimpour

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پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه مازندران - دانشکده علوم انسانی و اجتماعی 1388

abstract the present study was conducted to examine the effect of proficiency on students interaction while carrying out the grammar-based task(s) in collaboration. in particular, the study examines whether the level of proficiency affects the learners’ focus of attention to grammatical and lexical features. the study takes a further step and examines whether there is any difference in the use...

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