查询词典 dea

Therefore, variable research is one of the important contents in the DEA theories and application.

因此，对DEA模型中的变量研究构成了DEA理论研究和应用研究的重要内容之一。

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。

This dissertation mainly studies the classification of variables, and DEA models based there upon.

本文主要研究DEA变量的分类，以及基于这些分类的变量所建立的DEA模型。

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。

The paper presents a Fuzzy-DEA method based on data envelopment analysis method and fuzzy mathematics theories.

提出了将DEA方法与模糊数学理论结合的Fuzzy-DEA方法。

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。

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。

In the course of establishing the adaptability evaluation model of road construction economy development, to reflect the preference for each index by decision maker, the paper suggested the DEA comprehensive evaluation technique with preference restraint, combining the subjective analysis and external analysis, then surmounts the shortcoming of impossible weight distribution in DEA evaluation course.

在建立公路建设与社会经济发展适应性评价模型的过程中，为了反映决策者对各指标重要性的偏好，提出了带有偏好约束锥的DEA综合评价方法，主客观分析相结合，克服了DEA评价过程中可能分配不合理指标权重的缺点。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。