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51.
中国城市化与生态环境耦合规律与实证分析   总被引:1,自引:0,他引:1  
本文在阐明城市化与生态环境交互耦合含义的基础上,利用城市化的S型生长曲线和生态环境演变的倒U型曲线,演绎出城市化与生态环境耦合的规律曲线,并以中国的实际数据为例,进行实证分析。研究表明:(1)生态环境随城市化发展呈现出着先恶化、后改善的不规则倒U型耦合规律,但该规律曲线只是它们实际耦合的一种演变趋势;(2)1985~2005年间,中国工业废水排放量与城市化水平耦合表现出先倒U型和后U型的阶段特征,而这种特征曲线正是技术进步、产业结构高级化、人们环保意识的增强以及经济增长的压力等因素综合作用的结果。  相似文献   
52.
Hedonic models and air pollution: Twenty-five years and counting   总被引:2,自引:1,他引:2  
This paper reports a meta analysis of how effectively hedonic property models have detected the influence of air pollution on housing prices. Probit estimates are reported describing how data, model specification, and local property market conditions in cities represented in thirty-seven studies influence the ability of hedonic models to uncover negative, statistically significant relationships between housing prices and air pollution measures.Partial support for this research was provided by the Russell Sage Foundation. Thanks are due David Cordray, Heidi Hartman, and Larry Hedges of the Foundation's Meta-Analysis Panel for constructive comments, to Ray Palmquist for suggestions and assistance in assembling the results from his studies, to Rick Freeman and Tom Tietenberg and two anonymous referees for comments on the research, and to Barbara Scott for constructive editing of earlier drafts of this paper.  相似文献   
53.
This paper explores the issue of sustainability at the macro scale employing multi-criteria decision aid (MCDA) methods. The incommensurability of values and the essentially multi-dimensional and dynamic nature of sustainability challenge the use of composite measurement indices. This determined the choice of MCDA methods. Austria was chosen as a case study, due to the wide availability of data, especially on indicators of strong sustainability. The structure of the multi-criteria problem comprised the evolution of different sustainability dimensions over time. The process for selecting criteria included a critical assessment of institutional sustainability agendas (UN, EU and Austrian Government) and theoretical recommendations.After an assessment of MCDA methods, the NAIADE method demonstrated the most suitable properties for sustainability assessment. The application of this outranking approach was undertaken in three separate settings: long-term from 1960 to 2003, medium-term, 1970-1995, and short-term, 1995-2003 with varying numbers of criteria. The response of results to the addition of evaluating criteria and periods was tested. The degree of credibility for accepting preference relations was also employed for sensitivity analysis.According to the results of long-term and medium-term assessments, especially in the weak sustainability setting, sustainable progress is taking place in Austria. In the short term, in the stronger sustainability setting and, especially as the number of criteria increases, more incomparable periods appear and trends are less determined. Moreover, it is shown how results crucially depend on the methodological choices.This is one of the first applications of the multi-criteria tools to the dynamic analysis of sustainability at the macro scale.  相似文献   
54.
Comparing prospective data from the UK and Russia, this paper analyzes whether the association of labour market status, and particularly unemployment, with subsequent health varies by the level of state protection provided to the unemployed. While the UK's unemployment welfare regime is classified as providing minimal protection, the Russian regime is sub-protective. Employing Cox duration analysis upon data from the Russian Longitudinal Monitoring Survey and the British Household Panel Survey for the period 2000–2007, this study finds that labour market status and economic circumstances independently predicted individual-level declines in self-rated health and, contrary to expectations, the associations of unemployment with health decline were similarly sized in the two countries.  相似文献   
55.
As on-field success is nowadays the main objective of European soccer clubs, good management needs to extract the highest sport success from the squad talent at hand. Because teams differ in their quality, performance needs to be compared with the best practice of comparable units. One remarkable source of heterogeneity across teams is the squad composition, which can produce gains from diversity together with communication costs. The paper studies the efficiency in sporting performance of soccer teams, paying attention to how the number of foreign players relates to productive inefficiency. Using data for 146 teams in the top 5 European leagues during 10 seasons, we estimate a double heteroskedastic True Random Effects Stochastic Frontier team production function. We find that (i) the number of passes, ball recoveries, and shots from the penalty area improve team efficiency, and (ii) a higher number of foreign players increase inefficiency. Our findings suggest that gains from squad diversity might be offset by communication costs.  相似文献   
56.
上海外高桥保税区发展水平的集成综合评价研究   总被引:1,自引:0,他引:1  
本文首先建立了上海外高桥保税区发展水平综合评价指标体系,然后针对不同综合评价方法得出的评价结果可能存在差异的现象,结合模糊综合评价和因子分析的特点,提出了一种把模糊综合评价和因子分析相结合的集成综合评价方法,并对上海外高桥保税区发展水平进行了横向和纵向集成综合评价。应用表明,该集成综合评价方法比单一方法更加全面和有效。  相似文献   
57.
朱金瑞 《经济经纬》2005,(4):145-147
从中华人民共和国成立到改革开放前,我国的企业伦理主要表现为自觉的革命伦理精神、强烈的主人翁意识和有效的企业伦理建设方法等。革命性的企业伦理建设在一定程度上弥补了制度供给不足的缺陷,成为我国社会主义革命和建设的巨大精神支撑,也为市场经济条件下的企业伦理建设和经济社会的协调发展提供了宝贵的经验教训。  相似文献   
58.
长株潭城市群风景林建设具有良好的发展空间,不仅是提升城市群生态品位的必然选择,也是建设"两型社会"的重大举措。但从总体上看,长株潭城市群的资源消耗和环境承载力等制约因素仍然是长株潭城市群风景林建设的重大瓶颈。因此,努力破解风景林建设的制约瓶颈,科学定位长株潭城市群风景林建设的总体规划和生态配置。  相似文献   
59.
能源是人类赖以生存和发展的重要物质基础,能源消费与经济发展有着十分密切的关系。江西作为能源资源匮乏的省份,发展低碳经济是弥补劣势的重要手段。利用灰色关联分析方法具体分析了江西省能源消费结构与经济发展的关系。结果表明,江西省应改善以煤炭为主的能源消费结构,大力发展低碳经济,逐步优化产业结构和能源消费结构。  相似文献   
60.
花永剑 《经济与管理》2005,19(12):59-61
知识经济时代,企业自主研发是增强其竞争力的必经途径。而在国内,众多中小企业对研发投入持消极态度,尽管政府多方鼓励,但收效不大,且企业在自主研发的投入方面与发达国家有着较大的差距。可从严格保护研发成果、协作研发与加大政府的政策优惠力度等方面对中国中小企业的研发投入情况进行改进。  相似文献   
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