نتایج جستجو برای: douglas model

تعداد نتایج: 2110697  

Journal: :energy equipment and systems 0
behzad elhami department of agricultural machinery engineering, faculty of agricultural engineering and technology, university of tehran, karaj, iran asadollah akram department of agricultural machinery engineering, faculty of agricultural engineering and technology, university of tehran, karaj, iran majid khanali department of agricultural machinery engineering, faculty of agricultural engineering and technology, university of tehran, karaj, iran seyed hashem mousavi-avval department of agricultural machinery engineering, faculty of agricultural engineering and technology, university of tehran, karaj, iran

in the present study, the energetic and economic modeling of lentil and chickpea production in esfahan province of iran was conducted using adaptive neuro-fuzzy inference system (anfis) and linear regression. data were taken by interviewing and visiting of 140 lentil farms and 110 chickpea farms during 2014-2015 production period. the results showed that the yield and total energy consumption w...

Journal: :energy equipment and systems 0
saeed firouzi department of agronomy, college of agriculture, rasht branch, islamic azad university, rasht, iran amin nikkhah young researchers and elite club, rasht branch, islamic azad university, rasht, iran mehdi khojastehpour department of biosystems engineering, ferdowsi university of mashhad, mashhad, iran nicholas m. holden ucd school of biosystems engineering, agriculture and food science centre, university college dublin, belfield, dublin, 4, ireland

the energy efficiency, greenhouse gas (ghg) emissions, and carbon efficiency of paddy rice production were analysed in sari in the mazandaran province of iran during 2011–2012. data was collected through questionnaires and interviews with paddy producers. the results showed that the net energy gain was 27,932 mj ha-1 and energy efficiency was 1.83 during production. the results of the cobb-doug...

Journal: :journal of agricultural science and technology 2014
b. dhehibi a. alimari n. haddad a. aw-hassan

in this study, farm level technical efficiency (te) and its determinants were investigated. a stochastic cobb-douglas (cd) production frontier was used to provide estimates of input-oriented te for a sample of 100 rain fed farms in two palestinian governorates. empirical findings showed that the estimated te of the farms in the pooled sample ranged from 35.7 to 95.6%, with a mean value of 72.2%...

Journal: :journal of agricultural science and technology 2016
a. kumar p. sharma s. joshi

the current study assessed the climate change impacts on land productivity of major food and non-food grain crops in india. we compiled panel data for 30 years (1980-2009) using fifteen crops across thirteen agriculture intensive states. the value of production for each crop is estimated by farm harvest price (at constant prices, 1993-1994). aggregate value of production on per hectare land is ...

A. Tayebi, M. H. Emamian,

In this paper, we study generalized Douglas-Weyl Finsler metrics. We find some conditions under which the class of generalized Douglas-Weyl (&alpha, &beta)-metric with vanishing S-curvature reduce to the class of Berwald metrics.

‎In this paper we first obtain the non-Riemannian Randers metrics of Douglas type on two-step homogeneous nilmanifolds of dimension five‎. ‎Then we explicitly give the flag curvature formulae and the $S$-curvature formulae for the Randers metrics of Douglas type on these spaces‎. ‎Moreover‎, ‎we prove that the only simply connected five-dimensional two-step homogeneous Randers nilmanifolds of D...

Journal: :journal of agricultural science and technology 2014
a. baten i. hossain

efficiency in agricultural production is indicative of the efficiency level of farm households in their farming activities. farmers in developing countries do not make use of all the potential technological resources, thus making inefficient decisions in their agricultural activities. herein, technical efficiency in relation with the production of three types of rice crop (boro, aus and aman) w...

Journal: :Mathematical and Computer Modelling 2011
Francisco Reyes Santías Carmen Cadarso-Suárez María Xosé Rodríguez-Álvarez

The subject of discussion is health care production functions. The parametric two-factor Cobb–Douglas and transcendental logarithmic (translog) production functions are frequently used. However, empirical and theoretical work has often questioned the validity of the parametric Cobb–Douglas and translog as a model for the production of health care. The aim of this study is to propose a new flexi...

2011
Eduard Gracia

The Cobb–Douglas function is today one of the most widely adopted assumptions in economic modeling, yet both its theoretical and empirical bases have long been under question. This paper builds an alternative function on very different (albeit also neoclassical) microfoundations aimed at both addressing those theoretical drawbacks and providing a better empirical fit than the Cobb–Douglas formu...

2007
Ivan K. Ash Clinton S. Comer

This Conference Paper is brought to you for free and open access by the Psychology at ODU Digital Commons. It has been accepted for inclusion in Psychology Faculty Publications by an authorized administrator of ODU Digital Commons. For more information, please contact [email protected]. Repository Citation Ash, Ivan K. and Comer, Clinton S., "The Role of Expectation and Memory in the Hinds...

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