نتایج جستجو برای: stochastic frontier method

تعداد نتایج: 1742036  

Journal: :Electronic physician 2016
Satar Rezaei Hamed Zandian Akram Baniasadi Telma Zahirian Moghadam Somayeh Delavari Sajad Delavari

INTRODUCTION Hospitals are the most expensive health services provider in the world. Therefore, the evaluation of their performance can be used to reduce costs. The aim of this study was to determine the efficiency of the hospitals at the Kurdistan University of Medical Sciences using stochastic frontier analysis (SFA). METHODS This was a cross-sectional and retrospective study that assessed ...

Journal: :Journal of dairy science 2006
L W Tauer A K Mishra

A stochastic cost equation was estimated for US dairy farms using national data from the production year 2000 to determine how farmers might reduce their cost of production. Cost of producing a unit of milk was estimated into separate frontier (efficient) and inefficiency components, with both components estimated as a function of management and causation variables. Variables were entered as im...

Journal: :Mathematical Programming Computation 2021

We propose a stochastic approximation method for approximating the efficient frontier of chance-constrained nonlinear programs. Our approach is based on bi-objective viewpoint programs that seeks solutions optimal objective value versus risk constraints violation. To this end, we construct reformulated problem whose to minimize probability violation subject deterministic convex (which includes ...

2006
J. E. Griffin

Markov chain Monte Carlo (MCMC) methods have become a ubiquitous tool in Bayesian analysis. This paper implements MCMC methods for Bayesian analysis of stochastic frontier models using the WinBUGS package, a freely available software. General code for cross-sectional and panel data are presented and various ways of summarizing posterior inference are discussed. Several examples illustrate that ...

2017
Patricia Blatnik Štefan Bojnec Matej Tušak

The chief aim of this study was to analyze secondary healthcare providers' efficiency, focusing on the efficiency analysis of Slovene general hospitals. We intended to present a complete picture of technical, allocative, and cost or economic efficiency of general hospitals. METHODS We researched the aspects of efficiency with two econometric methods. First, we calculated the necessary quotien...

Journal: :ژورنال بین المللی پژوهش عملیاتی 0
m. sabouhi sabouni r. esfanjari kenari

the aim of this paper is to use the concept of the metafrontier function to study the determination of efficiency differentials and technological gap ratio (tgr) on wheat production in khorasan razavi province. in this study, we used the metafrontier function and group frontier based on the concept of stochastic nonparametric envelopment of data analysis (stoned). the data used in this study co...

Journal: :European Journal of Operational Research 2012
Dimitris Giraleas Ali Emrouznejad Emmanuel Thanassoulis

This study presents some quantitative evidence from a number of simulation experiments on the accuracy of the productivity growth estimates derived from growth accounting (GA) and frontier-based methods (namely Data envelopment Analysis-, Corrected ordinary least squares-, and Stochastic Frontier Analysis-based Malmquist indices) under various conditions. These include the presence of technical...

2016
Xiaoji Lin Berardino Palazzo Fan Yang

We explore the asset pricing implications of an investment-based model that features a stochastic technology frontier and costly technology adoption. Firms adopt the latest technology embodied in new capital to reach a stochastic technology frontier, but this decision entails an adoption cost. The model predicts that old capital firms are more risky and hence offer a higher returns than young c...

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