Regulatory and environmental effects on public transit efficiency: a mixed DEA-SFA approach

This paper assesses the impact of regulatory and environmental factors and statistical noise on the efficiency of public transit systems within a DEA-based framework. Using a panel of Italian companies, we implement a DEA-SFA mixed approach based on [H.O. Fried et al. (2002) Journal of Productivity Analysis, 17(1–2), 157–174] to decompose DEA inefficiency measures into three components: exogenous effects, managerial inefficiency and stochastic events. Besides providing evidence on the determinants of input-specific efficiency differentials across companies, the results point out that managerial skills play a minor role, and emphasize the relevance of regulatory policies aimed at replacing cost-plus subsidization with high-powered incentive contracts as well as improving environmental conditions of public transit networks.      

DEA在寿险公司经营效率评价中的应用研究

本文在阐明寿险公司经营效率含义的同时,对DEA以及DEA中两个重要模型CCR模型和BCC模型进行分析;然后根据DEA的应用步骤,将DEA方法应用于评价寿险公司的经营效率,用Lindo软件对数据进行处理,并以P寿险公司为例进行说明。     

基于SE-DEA的第三方物流服务供应商的评价选择

本文采用SE-DEA方法解决第三方物流供应商的评价选择问题,克服了以往常用的评价方法在确定权重方面的不足,为选择第三方物流供应商的企业提供更加客观有效的评价选择方法.本文最后的算例结果和专家评审的结果一致,说明采用SE-DEA方法在评价供应商方面是有效的.     

中国商业银行曼奎斯特生产率指数分析

本文用非参数的DEA产出前沿面构造出曼奎斯特(Malmquist)生产率指数模型,DEA产出Malmquist可分解为效率变化指数和技术变化指数。并应用该模型时中国14家商业银行1998-2002年的生产率进行了分析,得出中国商业银行生产率在考察期内是提高的,但技术进步对生产率提高的作用要大于代表管理水平的效率变化指数对生产率提高的作用。同时也得出,生产率的提高与所有制结构有直接关系。     

电力生产、跨省交易与能源环境效率

将电力生产作为先行于其他社会生产的生产环节,在考虑规模越来越大的电力跨省交易和非期望产出(二氧化碳排放、工业废气总排放量、工业废水总排放量等)的基础上,使用非参数网络数据包络分析模型测算了2000—2012年中国省域能源环境效率。结果表明:与考虑电力生产和跨省交易的网络DEA模型相比,利用传统DEA方法会高估电力输入省的能源环境效率、低估电力输出省的能源环境效率。指出调整电力生产布局和跨省输送网络可以有效提高地区的能源环境效率。     

基于AHP与DEA方法的创新效率研究

企业的技术创新能力是现代经济社会进步与发展的重要标志。在企业创新效率评价中,数据包络分析法(DEA)具有无需对输入和输出指标的计量单位或量纲进行统一,也不需要事先确定属性之间的相对权重等优势,已经被大量应用于创新效率的评价。但DEA方法只凭借客观数据,并未考虑决策的主观因素,在传统应用时有所限制。为了解决DEA方法在实际应用中的局限,使效率评价更加贴合实际要求,本文将AHP和DEA相结合,以重庆市八类企业为研究对象,通过首先引入AHP方法对相关指标进行筛选,确立符合地区现状的评价体系,再利用DEA评价其创新能力的技术效率、纯技术效率、规模效率情况,最后为当地政府的相关政策制定提供建议。     

国家重点科技资源支撑区域创新经济产出的空间差异研究

根据2011-2014年科技部《国家重点科技基础条件资源调查表》以及国家统计年鉴数据,首先,使用赫芬达尔指数定量描述了利用国家重点科技资源进行创新活动的非均衡性。其次,使用网络DEA方法,实证分析了2012-2014年中国(内地)各省份国家重点科技资源对区域创新发展的支撑作用。研究表明,国家重点科技资源对区域创新发展的支撑作用不仅取决于资源创新生产阶段,而且受制于重点科技资源支持下的区域创新发展阶段。重点科技资源的支撑作用还有较大提升空间,70%的省份创新成果转化能力有待提高,且大部分省份的国家重点科技资源未实现优化配置。此外,全国及东部、中部和西部国家重点科技资源对区域创新发展的支撑效率不存在绝对收敛趋势。     

Operational performance of U.S. public rail transit and implications for public policy

In today's tough economic environment, governments at all levels face significant budget shortfalls and public rail transit systems must compete with other public services for government subsidies. It is critical that public rail transit systems be concerned with their operational performance and efficient use of resources. In this paper, we develop a methodology that measures a rail transit system's performance relative to that of other rail transit systems, compares its performance to an appropriate efficient benchmark system, and identifies the sources of its inefficiency. We analyze the relationship between public subsidies and operational performance of public rail systems and show an inverse relationship between subsidization and efficiency.     

Efficiency evaluation of the regional high-tech industry in China: A new framework based on meta-frontier dynamic DEA analysis

This paper proposes a new framework based on the combination of the dynamic DEA, meta-frontier analysis theory, and truncated regression model, and then focuses on the efficiency evaluation of regional high-tech industries in China. For all of the overall technical efficiency, technical efficiency, and scale efficiency scores, the east area is always in the lead, with the central and west areas obviously lagging behind. The eastern area has the highest technology level, whereas the west and central areas fall behind in turn. However, the meta-technology ratio of the west area has rapidly increased and presents a trend of catching up with the east. The variables of GRP per capital, total exports and imports, highway mileage per capita, and ratio of tertiary industry to GRP have positive relationships with technical efficiency, and the time trend exhibits a negative coefficient.     

Operating efficiency in Chinese universities: An extended two-stage network DEA approach

The result shows that it accepts the null hypothesis. Namely, there is no significant difference in the operating efficiency of universities in different regions. That is to say, although the efficiency of the central and western universities is slightly better than that of the eastern universities in terms of the average efficiency, there is no significant efficiency difference among the eastern, central, and western regions statistically. Therefore, it shows a balanced development trend for the efficiency of universities in different regions.