广告收入上限的规制涵义--基于电视产业的分析

文章在电视产业规制实践的基础上,把节目编排作为衡量电视传播企业的主要产出,在理论上证明了当观众的总需求固定时,三类电视频道都存在基于DEA的广告收入上限,其规制涵义在于,当把广告收入看作规制者给予电视传播企业的一种转移支付的形式时,基于DEA的广告收入上限给出了促进三种经营方式竞争的规制框架,因此,国家对广告收入上限的规制有着合理的理论基础。     

Endogenous network efficiency,macroeconomy, and competition: Evidence from the Portuguese banking industry

Although performance analysis has become a vital part of the banking industry, research on the efficiency of Portuguese banking remains scarce and focused on discussing rankings to the detriment of unveiling its productive structure relative to its competition. This issue is of utmost importance considering the relevant transformations in the Portuguese economy over the last ten years. In this study, we developed a network productive structure comprising two paradigms (the production and intermediation approaches, respectively) to assess how market competition and other macro-economic variables impact bank efficiency and their feedback effects in Portugal. Unlike previous research, an integrated multi-layer perceptron (MLP)/hidden Markov model (HMM) was used for the first time to unveil endogeneity among banking competition, macro-economic variables, and the efficiency levels of the production and intermediation approaches in banking. The findings illustrate the pattern of interaction among these variables and verify that the production efficiency is the cornerstone of endogeneity in Portuguese banks. Policy makers will find the results helpful.     

The relevance of commuting zones for regional spending efficiency

We use data envelopment analysis (DEA) efficiency scores to show that clustering municipalities into encompassing regional clusters improves spending efficiency of single stand-alone municipalities. We propose a new geographic aggregation based on municipalities-to-municipalities commuting flows, defined using hierarchical cluster analysis. Our example for Portugal shows that from an output-oriented perspective between 83% and 98% of municipalities would increase their efficiency scores, while from an input-oriented perspective between 86% and 98% of municipalities would also be better off in terms of efficiency. Then using a linear regression model, we find that population increases positively affects the efficient scores (via scale economies). Also, increases in the share of high-educated and poorer residents leads to higher efficiency scores.     

我国商业银行效率的实证分析(2001-2003)

银行效率问题已经成为关系我国银行业存亡的大问题,文章通过对文献的整理,并对最近三年的14家商业银行效率用DEA法进行了实证分析,发现四大国有商业银行的配置效率普遍较低。从技术效率和成本效率来看,股份制商业银行并不占优。     

基于DEA的文化产业投入与产出效率趋势实证研究——以江苏20042010年文化产业投入产出数据为例

本文应用DEA评价方法,依据江苏文化产业2004--2010年投入与产出数据,对江苏文化产业发展的效率趋势进行了分析测算。研究表明,江苏文化产业发展总体效率较高,个别年份发展不平衡,出现投入与产出不相匹配。文化产业发展不仅需要增加要素投入,还应该在增加产业投入的同时优化资源配置。必须依靠技术进步提高文化资源的利用效率,从而达到投入与产出的最佳匹配状态,取得相对较高的发展效率。     

基于DEA方法的旅游电子商务网站效率评价研究

在已构建的旅游电子商务网站效率DEA评价指标体系下,对6个旅游电子商务网站的实证分析表明,同程网、旅游热线和通用旅游网三个旅游电子商务网站效率相对非有效,而艺龙网、携程网和酷讯网相对有效;酷讯网被参照了三次,其效率评价最优。从投影和对比分析结果中也可以看出,同程网应着重加强网站链接量和减少网站对象数量来进行对网站建设的改进。     

Aspects of statistical analysis in DEA-type frontier models

In Grosskopf (1995) and Banker (1995) different approaches and problems of statistical inference in DEA frontier models are presented. This paper focuses on the basic characteristics of DEA models from a statistical point of view. It arose from comments and discussions on both papers above. The framework of DEA models is deterministic (all the observed points lie on the same side of the frontier), nevertheless a stochastic model can be constructed once a data generating process is defined. So statistical analysis may be performed and sampling properties of DEA estimators can be established. However, practical statistical inference (such as test of hypothesis, confidence intervals) still needs artifacts like the bootstrap to be performed. A consistent bootstrap relies also on a clear definition of the data generating proces and on a consistent estimator of it: The approach of Simar and Wilson (1995) is described. Finally, some trails are proposed for introducing stochastic noise in DEA models, in the spirit of the Kneip-Simar (1995) approach.     

石油企业技术创新能力评价研究

技术创新能力是石油企业技术创新的主体,对石油企业发展起着至关重要的作用,它直接关系到石油企业未来发展空间和发展方向,影响石油企业的竞争力。文章首先分析了企业技术创新能力评价指标体系的构建原则,根据其构建原则,建立了石油企业技术创新评价指标体系,并基于DEA评价模型,对石油企业技术创新能力进行评价和分析。     

基于DEA方法的制造企业物流系统效率评价实例分析

针对制造企业的特点,设计了物流系统评价指标体系,运用DEA方法对制造企业物流系统效率评价问题进行研究。通过实例分析,证实DEA方法对制造企业物流系统效率评价有较好的应用价值。     

物流企业人才现状及对策研究——基于偏好约束锥企业文化DEA模型

在知识经济的今天,企业文化代表了企业品牌和核心竞争力的发展方向。从物流企业的人才现状入手,分析了物流企业人才培养中的主要问题,建立了偏好约束锥企业文化DEA模型,期望通过物流企业与企业文化间的博弈分析,找到改善物流企业人才现状的对策。