نتایج جستجو برای: douglas stochastic frontier model

تعداد نتایج: 2197867  

Journal: :Journal of Productivity Analysis 2022

Abstract Advanced efficiency measurement methods usually fall within Stochastic Frontier Analysis (SFA), Data Envelopment (DEA), or their derivatives. Although SFA has some theoretical advantages, it been criticized for relying on arbitrary and potentially restrictive assumptions about model specification. One strand of the literature suggests use nonparametric SF models to cope with issue. We ...

Journal: :Health economics 2004
William Greene

The most commonly used approaches to parametric (stochastic frontier) analysis of efficiency in panel data, notably the fixed and random effects models, fail to distinguish between cross individual heterogeneity and inefficiency. This blending of effects is particularly problematic in the World Health Organization's (WHO) panel data set on health care delivery, which is a 191 country, 5-year pa...

Journal: :Journal of Agribusiness and Rural Development 2022

Introduction: The impact of Fadama III programme on the efficiency levels farmers in Kogi state, Nigeria was investigated.
 Materials and methods: Primary data were obtained with a questionnaire administered to 382 respondents selected through stratified random sampling procedure. Cobb-Douglas stochastic frontier production cost functions employed analyses. resulting estimates for benefici...

1995
Xiaosong Xu Scott R. Jeffrey

Productive efficiency for Chinese hybrid and conventional rice production is estimated using a dual stochastic frontier efficiency decomposition model. Results reveal significant differences in technical and allocative efficiency between conventional and hybrid rice production, and indicate significant regional efficiency differences in hybrid rice production, but not in conventional rice produ...

Journal: :تحقیقات مالی 0
حمیدرضا قاسمی کارشناس ارشد مهندسی مالی، دانشگاه خواجه نصیرالدین طوسی، تهران، ایران امیرعباس نجفی استادیار مهندسی صنایع، دانشگاه خواجه نصیرالدین طوسی، تهران، ایران

short-selling prohibition has been one of the primary assumptions of markowitz mean-variance model. solving markowitz quadratic model creates investment efficient frontier by considering only two return and budget constraints. in order to develop a more realistic portfolio selection model, in this paper, a new mathematical model is developed to allow short-selling under some practical constrain...

Journal: :چغندرقند 0
لادن شفیعی هیات علمی مرکز تحقیقات کشاورزی و منابع طبیعی کرمان

in order to study the effective factors in sugar beet production, evaluation of technical, allocative and economical efficiency of sugar beet producers in bardsir city, 150 sugar beet producers were questioned by classified method. data were collected through questionnaire forms filled by producers in 2004-05. the stochastic frontier production and cost function method were used to analyze the ...

Journal: :Computational Statistics & Data Analysis 2017

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