基于可持续景观设计的园林植物需水量评估——以美国加州庭院景观为例

随着中国经济社会的不断发展和城市化进程的快速推进,为了满足市民对美丽环境日益增长的需求,国家设计并建造了越来越多的城市公园和街头绿地。而面对我国普遍缺水的现状,科学有效地评价、设计、管理景观用水显得十分重要,但国内却鲜有对此关注。特别是园林植物养护用水,即园林植物需水量,直接关系着可持续景观建设的实现。美国加州很早开始了相关领域的研究,并将园林植物需水量评估方法强制应用于实际景观设计中,可快速量化计算设计场地未来的用水量,具有现实的借鉴和指导意义。分析了国内对于可持续景观用水的相关现状和问题,依据WUCOLS项目的研究与实践,详细介绍了美国加州现行应用于景观设计中的园林植物需水量量化评估方法,并基于某加州庭院景观设计项目展示园林植物需水量估算的实际应用,讨论美国加州园林植物需水量估算的优劣与意义,进而分析其借鉴的可能性和方法。以期在未来建立一个符合中国特色的园林植物用水量评估体系,从而推进今后的可持续景观设计与建设。     

Globalization with a human face

This paper has six parts. The first part defines globalization. The second discusses globalization eras. The third discusses the irreversibility and inevitability of globalization. The fourth section discusses the benefits and costs of globalization. The fifth section asks what is to be done. The sixth section contains my conclusions.     

人力资源专员的素质要求

本文选择北方某区域型中心城市5个月的相关平面招聘广告，采用非介入性研究的方法进行内容分析和数据统计，从而发掘当前人力资源专员素质要求的实质。最后，构建创建与变革时期人力资源专员的素质模型，并对该期人力资源专员的素质要求提出若干建议。     

Medical insurance with rank-dependent utility

Summary. A well-known result in the medical insurance literature is that zero co-insurance is never second-best for insurance contracts subject to moral hazard. We replace the usual expected utility assumption with a version of the rank-dependent utility (RDU) model that has greater experimental support. When consumers exhibit such preferences, we show that zero co-insurance may in fact be optimal, especially for low-risk consumers. Indeed, it is even possible that the first-best and second-best contracts are identical. In this case, there is no “market failure”, despite the informational asymmetry. We argue that these RDU results are in better accord with the empirical evidence from US health insurance markets. Received: February 26, 2001; revised version: October 4, 2002 RID="*" ID="*"The authors would particularly like to thank Simon Grant, John Quiggin, Peter Wakker and an anonymous referee for valuable comments and suggestions on earlier drafts. The paper has also benefitted from the input of seminar audiences at The Australian National University, University of Auckland, University of Melbourne and University of Sydney. Ryan also gratefully acknowledges the financial support of the ARC, through Grant number A000000055. Correspondence to:R. Vaithianathan     

健康、教育与经济增长

健康与教育是人力资本诸多形成方式中最重要的两种,长期以来内生增长理论强调和重视教育人力资本对于经济增长的贡献和作用,但健康与教育之间的相互影响以及健康人力资本对于经济增长的作用却未得到应有的重视。基于此,本文在Lucas(1988),Van Zon和Muysken(2001)模型基础上,构建了一个包含最终产品、健康和教育的三部门模型。静态均衡、转移动态和仿真实验的结果表明:在总体人力资本的形成过程中,健康对广义人力资本的贡献份额大于教育;健康的增量而非健康人力资本存量水平有利于长期经济增长;健康的改善必须同时辅以教育人力资本的提高才能促进经济增长;政府公共健康支出对于健康人力资本的形成具有重要作用,有助于促进发展机会的均等和减贫;重视人力资本积累的经济体在10-15年后会呈现明显的经济绩效的改善。     

生态需要与发展的理论研究

生态需要是人类三大需要的支柱之一，也是人类持久发展的动力源。正是人类的生态需要导致了人类发展观念的五种更新，促进人类需要结构的合理化，推动人类社会整体前进。     

Do physician incentives affect hospital choice? A progress report

The US health reforms of March 2010 introduced new provisions for physicians providing Medicare and Medicaid services to be given financial incentives to control costs. Physician payment mechanisms generating similar incentives are currently used by some health maintenance organizations in California. We describe an ongoing research project in which we investigate physician responses to these payment schemes. The question is whether patients whose physicians have incentives to control hospital costs are admitted to lower-priced hospitals than other patients, all else equal. We provide an initial analysis of California hospital discharge data from 2003, documenting evidence consistent with this hypothesis.     

A prospective analysis of labour market status and self-rated health in the UK and Russia

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.     

Welfare costs of reclassification risk in the health insurance market

We assess the quantitative importance of reclassification risk in the US health insurance market. Reclassification risk arises because the health conditions of individuals evolve over time, while a typical health insurance contract only lasts for one year. Thus, a change in the health status can lead to a significant change in the health insurance premium. We measure welfare gains from introducing explicit insurance against this risk in the form of guaranteed renewable health insurance contracts. We find that in the current institutional environment individuals are well-sheltered against reclassification risk and they only moderately gain from having access to these contracts. More specifically, we show that employer-sponsored health insurance and public means-tested transfers play an important role in providing implicit insurance against reclassification risk. If these institutions are removed, the average welfare gains from having access to guaranteed renewable contracts exceed 4% of the annual consumption.     

人类社会发展的两个原动力

社会发展的原动力,历来有多种说法,实事求是地讲,从宏观角度看即人民群众日益增长的物质民主文化需求,从微观角度看是个人的利己性和利他性。其根源在于人的物质属性与社会属性。在于自然界生存竞争即适者生存过程中个体选择与群体选择的对立统一。对这个需求的不断满足,利己性和利他性的不断发挥作用,有力地推动着科技生产力的发展和阶级斗争的进取,推动着人类社会的整体演绎。对这个问题的深入探析,有助于促进科学发展观以人为本理念的贯彻,促进社会主义民主与法制建设,促进社会主义市场经济体制健康发展,和谐社会务实构建。