نتایج جستجو برای: 67 average scale efficiency

تعداد نتایج: 1324343  

2004
Rene Beier Berthold Vöcking

The size of the Pareto curve for the bicriteria version of the knapsack problem is polynomial on average. This has been shown for various random input distributions. We experimentally investigate the number of Pareto optimal knapsack fillings. Our experiments suggests that the theoretically proven upper bound of O(n3) for uniform instances and O(φμn4) for general probability distributions is no...

SH. Pourmousa

In this research, efficiency of Iranian forest and rangeland decision making unit was assessed using non-parametric method. Inputs and outputs determined by field research and with applying a Delphi method the final input and output variables selected. Forty five wood-producing units (forestry plans) in three northern Iranian province were studied using Data Envelopment Analysis. The efficiency...

2017
Monica Giancotti Annamaria Guglielmo Marianna Mauro

BACKGROUND National Health Systems managers have been subject in recent years to considerable pressure to increase concentration and allow mergers. This pressure has been justified by a belief that larger hospitals lead to lower average costs and better clinical outcomes through the exploitation of economies of scale. In this context, the opportunity to measure scale efficiency is crucial to ad...

    Background: Assessment of hospitals’ performance in achieving its goals is a basic necessity. Measuring the efficiency of hospitals in order to boost resource productivity in healthcare organizations is extremely important. The aim of this study was to measure technical efficiency and determining status of resource allocation in some university hospitals, in Tehran, Iran.   Methods : This s...

Journal: :Physical review. E, Statistical, nonlinear, and soft matter physics 2006
Wen-Xu Wang Chuan-Yang Yin Gang Yan Bing-Hong Wang

The efficiency of traffic routing on complex networks can be reflected by two key measurements, i.e., the network capacity and the average travel time of data packets. In this paper we propose a mixing routing strategy by integrating local static and dynamic information for enhancing the efficiency of traffic on scale-free networks. The strategy is governed by a single parameter. Simulation res...

2013
Abdul Qayyum Khalid Riaz

This study estimated the Malmquist Total Factor Productivity Index and its components. It attempted to examine patterns of change in these indices in periods leading up to and immediately following, the macroeconomic crisis in Pakistan in the year 2008. Bootstrapping procedure proposed by Simar and Wilsonwas employed to construct confidence intervals for efficiency estimates. For many banks, to...

Journal: :international journal of environmental research 2011
r. mahmoudkhani a.h. hassani a. torabian s.m. borghei

one of the most important concerns in tehran municipal landfill is the production of leachate and its potential for water resources pollution, this study was undertaken to examine feasibility of biological and physico/chemical treating of high-strength landfill leachate that was collected from tehran municipal landfill. average cod of the leachate in aerobic submerged membrane bioreactor is 68...

Wheat is a major agricultural crop in the Sistan region with a key role in local economy. The present study aimed to economically explore the efficiency of wheat production over the 2014-2016 period with the window data envelopment analysis (WDEA) approach. Also, the Malmquist productivity index was employed to assess the productivity of wheat growers in the study site under variable return to ...

2004
Sung-Hoon Sohn Yun-Cheol Baek Juno Chang

In this paper, we propose a hybrid peer-to-peer streaming architecture for large scale media streaming service. The proposed architecture combines peer-to-peer system and centralized server to exploit advantages of the two models. Then, we deal with streaming load allocation problem under the proposed scheme. Given a set of centralized servers and a set of unreliable supplying peers with hetero...

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