查询词典 DEA

Based on them, this paper proposes evaluation indexof fund performance from the aspect of finance, investor and interiormanagement. Considering the limitation of data envelopment analysis approach usedto evaluate fund performance, such as conventional DEA models can not considerinputs and outputs of evaluation units simultaneously, and an input-oriented DEAmodel and output-oriented DEA model often produce different evaluation results,this paper proposes a general form of DEA model which is input- andoutput-oriented by using multi-objective optimization and fuzzy set theory. Sincethe general form of DEA model can be transformed into a conventional input oroutput oriented DEA model by using special membership functions, it can beseemed as a nature extense of conventional DEA models, and a conventionalmodel can be regarded as a special case of DEA mdoel with general form.

针对现有基金绩效评价方法中较具优越性的数据包络分析方法的不足，如传统DEA模型不能同时综合考虑评价单元的输入和输出，以及分别采用面向输入和面向输出DEA模型评价基金绩效时，常常出现不一致的评价结果等，本文以多目标优化与模糊集合理论为工具，提出了一种能够同时面向输入和输出的DEA一般形式模型，并通过选择一些特殊的模糊集合隶属函数，使得这种DEA一般形式模型成为传统DEA模型的自然推广，而传统DEA模型是该模型的特殊形式。

The traditional DEA model can not beused to deal with such stagewise operation problems. In order to avoid the limitation of the traditional DEA model, a multi-stage DEA model was set up based onthe idea of the DEA model with uncontrollable factor. Simultaneously, considering the shortage of the single DEA model, the multi-stage DEA model was extended to be the multi-objective one.

工程项目某一分期实施阶段的无效率可能导致整体计划的无效，为了克服传统DEA模型评价这类阶段性问题的局限，及时发现并调整工程项目的无效阶段，借鉴具有不可控要素DEA模型的思想建立了多阶段DEA模型，同时考虑到单目标DEA模型的不足，进一步将多阶段DEA模型扩展为多目标模型。

For those schemes with weak DEA efficiency or DEA inefficiency who want to reach DEA efficiency,we use slack variable to point out the elements which must be improved and calculate the improved degree or number.

因而，评价指标的数量、性质，指标体系的结构、评价标准等方面会因包装对象、环境的不同而产生很大的差别。

Thirdly, the development of DEA and the application of three-stage DEA model are studied by the paper.

再次，本文研究了DEA方法的发展进程和三阶段DEA模型的应用特性。

Even now, there are many problems should be researched deeply in DEA theory and DEA method.

尽管如此。在DEA的理论和方法上，还有一些工作有待于进一步研究。

For the theorem 4 on DEA efficiency (C~2R) in reference ,this paper gives its inverse theorem under a condition in order to be easy to discriminate DEA efficiency (C~2R).

对文[1]中有关DEA有效(C2R)的定理4，本文给出了在某种条件下的逆定理，以便简化DEA有效性(C2R)的判断。

It not only discovered the reason that caused the industrial noneffective, moreover through the effective front surface "the projection" analysis, has discovered the key aspect and the improvement goal in invests and delivers when the non-DEA effective industry transforms for DEA effective.

本文运用数据包络分析法对青海省36个产业近年来的投入产出效率进行了测算分析，不仅找出了导致产业非有效的原因，而且通过产业在有效前沿面上的"投影"分析，找出了非DEA有效的产业转变为DEA有效时，在投入和产出中的关键因素及其改进目标。

It is pointed out that the medical consumption is unaccommodated to the GDP average of the people. At the same time the empirical study shows that the conclusions in the work are more practicability and operability.Finally, the concluding remarks are presented. It is pointed out that problems are still explored about the DEA. The developing prospect of the DEA is also depicted according to the research effort.

利用所得结论探讨中国各省市医疗机构的收费与国民平均GDP的适应度，所得结果反映出当前我国医疗保健与经济发展不相适应的现状；同时也说明研究结论具有更强的实用性，更高的操作性；最后，总结全文的工作，提出仍需研究的一些问题，展望数据包络分析的发展前景。

The thesis is based on income question, forest coverage rate and grop production.to beging with, date envelopment analysis is proved that it can be applicated into grain for green in shan-bei district, and then in view of the fact, seven esential factors which have influence on the project are found out: expense of dam, expense of crop,expense of cash tree ,expense of defense tree,other economic crop,expense of grass and graziery;and the output factors include:income of gdp,pure income per captia,the area of decreasing land loss,graziery income ,crop production,income of tree,the totle income of economic crop.after the date of each facts are puted into dea model,unefficiencial decision making units found.the data that are got through adjusting unefficiencial dmus dy dea can offer guide in shanbei district upgrading of an industrial structure.at the same time ,taking into account some possible problems in or after grain for green in shan-bei district,the thesis bring out some propesal to improve the circumstance,enhance the life level and putthe relation of population,resource and circumstance into a healthy orbit.

论文以解决陕北地区的收入问题，植被问题以及粮食产量问题为出发点，首先从理论上分析了包络分析方法在陕北地区退耕还林中运用的可行性，然后结合陕北地区目前的实际情况，综合分析出影响陕北地区退耕还林的关键的七个因素作为输入指标：水利水保设施投入，农作物投入，经济林种支出，防护林支出，其它经济作物，草类支出，畜牧业投入；以退耕还林所要解决的最终问题作为输出指标：GDP收入、农民人均纯收入、水土流失减少量、牧业总产值、粮食产量、林业总产值、其他经济作物总产值。将各指标所对应的数据代入模型后，通过分析求解得出非有效的决策单元，再运用包络分析方法的一些基本原理对非有效的决策单元进行调整，由此所得的数据对陕北地区的实际投入具有很好的指导意义。同时，又针对陕北地区在退耕还林过程中以及之后可能面临的困境，提出了一些建议和对策。最终使得陕北地区的投资环境尽快得以改善，使农民尽快脱贫致富，使人口、资源、环境的关系尽快纳入良性循环的轨道上。

An evaluation of system efficiency of the enterprises' logistics system based on dea abstract: the research of the logistics is a crisscross and comprehensive analysis of multilateral subjects,which is of strong attribution of systemility、quantitality and optimality,especially in the rational analysis and evaluation of comparative efficiency of the logistics system.operations research is just a subject which focuses on the attribution of systemility、quantitality and optimality.thus ,here,or takes a very important position.its mentionable that the application of or including its models and methods is often different with those classical models BEC ause of certain especial attribution of the logistics system,as should be noteworthy here.in this paper,a new field of or ―― date envelopment analysis is recommended.dea is usually used to evaluate the comparative efficiency of units in some parallel departments or denominations.in this paper it analyzes the characteristics of the enterprises' logistics and identifies the factor scheme used for the evaluation of its efficiency.

物流研究属于多学科的交叉与综合分析，具有强烈的系统性特征、数量化特征及最优性特征。它们在物流合理化分析和系统相对有效性评价中更为突出。运筹学恰是以系统性、数量化及最优化为核心，因此，在物流合理化研究和系统相对有效性评价中占有重要地位。由于物流系统具有某些特有的属性，故运筹学在其中的运用，包括模型与方法，往往与经典的模式有所不同。本文引入运筹学的一个新领域――数据包络分析（data envelopment analysis ，简称dea）模型，一种用于评价相同类型部门中各成员间的相对有效性的模型，来评价企业物流系统的相对有效性。

The circulation, consumption and reproduction of the trilogy have not only testified to its historical significance and literariness, but also invested it with new meanings.

该三部曲的流通、消费与再生产不仅验证了其历史意义及文学性，而切还赋予它以新的意义。

If he thought that he could buy me off, he would be wrong.

如果他认为他可以收买我，那他就大错特错了。