排序方式: 共有148条查询结果,搜索用时 15 毫秒
51.
Ports currently face increasing demands to address a variety of environmental issues and achieve sustainability objectives. Using insights from the resource-based view of firms, this study examines the link between economic performance (EP) and environmental performance (ENP) of the top 10 U.S. seaports. Geospatial modeling is used to capture pollution incidents that can be geographically dispersed; in addition, both a bootstrap data envelopment analysis (DEA) approach and an undesirable DEA model are used to measure port ENP and EP. Our findings are in general consistent with assertions that positive EP can be attained in conjunction with good environmental practices. Ports’ capabilities of strategic capital investment in physical assets, collaborative interorganizational processes, and performance monitoring are essential, while they pursue both economic and environmental goals simultaneously. 相似文献
52.
选取员工人数、营业总成本、流动资产、非流动资产作为输入指标,以营业收入、利润总额为输出指标,利用DEA模型中的c2R模型、C2GS2模型以及DEA对抗交叉评价模型来对13家港口行业上市公司2008年数据进行评价,并针对评价的结果提出了改进建议. 相似文献
53.
Ports in the European Union and North America have enforced environmental regulations on controlling SOx and NOx emissions from ships in their coastal areas known as Emission Control Areas (ECAs). This study uses two-stage approaches to examine whether ECA regulations impact the efficiency of ports operating in such areas. First, port efficiencies are estimated using non-radial slacks-based measure (SBM) Data Envelopment Analysis (DEA) models. The efficiency scores estimated by the SBM DEA models are then regressed on explanatory variables, including the ECA factor, and macroeconomic indicators using bootstrapped truncated regression (BTR) models. Panel data is collected on countries in EU ECAs and non-ECAs regarding such input variables as capital and labor, with cargo as an output variable. The results indicate that ECA regulations can harm port efficiency, reflecting concerns of policy-makers and industrial managers: the average efficiency loss from an ECA designation amounts to 0.058–0.066 on a scale of 0–1, accounting for a 15–18% loss from ECA ports’ average efficiency scores. 相似文献
54.
数据包络分析模型与方法在船型方案排序择优中的应用 总被引:2,自引:0,他引:2
阐述了使用具有铭结构的DEA模型──C~2WH对有限方案多准则船型方案作有效性评判择优的原理和方法。针对船型论证,对C~2WH模型作了变换处理,使模型和方法更加筒明,且便于应用。算例表明,本文方法用于船型方案排序择优,不仅能继承以往DEA模型C~2R、C~2GS~2等体现出的使船型技术经济综合评判定量化的优点,还能较好地体现船舶设计者基于经验的偏好。 相似文献
55.
朱帮助 《武汉汽车工业大学学报》2008,30(1):109-113
在分析和构建一套合理的企业客户忠诚度评价指标体系的基础上,提出了一种基于PCA/DEA的企业客户忠诚度复合评价模型。实证结果表明,PCA/DEA复合评价模型不仅能够对企业客户忠诚度进行合理有效的评价,而且可以找到提高企业客户忠诚度的敏感因素,从而帮助企业改进客户关系管理策略。 相似文献
56.
中国汽车制造业效率的经验研究 总被引:1,自引:0,他引:1
本文利用数据包络分析中的CCR模型,对我国汽车制造行业效率问题进行了研究.研究表明,我国汽车制造行业整体效率偏低,企业间效率差异较大,外资企业和规模较大企业效率较高.本文最后分析了其形成原因,并提出了提高我国汽车行业资源配置效率的政策建议. 相似文献
57.
58.
59.
为定量衡量天津港构建的内陆港群与区域经济的关系,在分析二者协调发展机理的基础上,选取相应指标,构建基于DEA的评价模型.内陆港和城市经济发展有效性的评价结果显示,北京的内陆港与城市的发展均有效,包头、石家庄、德州属于城市经济有效、内陆港发展无效,惠农内陆港有效、城市经济无效,侯马的内陆港与城市经济的发展均无效,表明天津港的内陆港发展程度不同,腹地经济发展十分不平衡.对二者关系有效性的评价结果则表明,内陆港群与城市经济没有实现良好的双向有效协调发展,其中惠农和侯马两个城市与其内陆港的发展极其不平衡. 相似文献
60.
产业集聚是我国船舶工业可持续发展的重要途径,集聚效率能够反映不同区域的产业集聚效果。以区位熵方法测算各省市船舶工业的劳动力集聚度和企业集聚度,以此判别我国船舶工业的区域集聚状况,并运用数据包络分析方法对高集聚度省市分别在利润、产值和出口三方面进行集聚效率评价。结果显示,不同区域船舶工业的集聚效率存在较大差异,有进一步合理布局及提升效率的空间。最后,提出了相关的发展建议。 相似文献