Regulatory policy outputs and impacts: Exploring a complex relationship

In this article, we pursue the objective of empirically testing the extent to which changes in environmental policy outputs can explain changes in environmental impacts. Previously, systematic testing of this relationship was hampered by the lack of a compelling measurement of changes in regulatory policy outputs. To remedy this, we present a novel approach to the measurement of events of regulatory output change. We illustrate our concept by employing data on changes in clean air regulations in 24 advanced democracies from 1976 to 2003. In a next step, we explore the extent to which changes in clean air regulations can account for changes in air pollutant emissions. The empirical analysis suggests that changes in clean air regulations cannot be unconditionally associated with changing intensities of air pollutant emission. We deem these results to have far‐reaching implications for the study of regulatory policy change.     

深圳“5.8“空难事故的法医学鉴定

报道了1997年5月8日深圳黄田机场发生的重庆至深圳B－2928号客机降落时撞击地面起大爆炸,造成35人死亡和37人受伤的空难事故,对遇难者的死亡时间、损伤情况、死亡原因、事故原因和个人识别进行了分析,并对处理类似重大事故的法医学鉴定程序进行了探讨。     

北京市市区采暖期二氧化硫严重超标的原因和对策

北京市区采暖期二氧化硫污染严重,大大超过国家二级标准。为保证低硫低灰份优质煤推广工作的顺利进行,必须颁布北京市煤质地方标准以及锅炉大气污染物排放地方标准,并争取国家批准北京市提高对二氧化硫的收费标准。     

Rising Inequality in Mexico: Household Characteristics and Regional Effects

We use an empirical framework to identify the contributions of microeconomic factors to the sharp rise in household (per capita) income inequality in Mexico between 1984 and 1994. Results indicate that changes in returns to household characteristics, in particular changes in returns to education, are responsible for about half of the increase in the Gini coefficient. The deteriorating conditions in rural areas relative to the urban areas and of the southern region relative to other regions account for another fourth of the increase in the Gini.     

Zimbabwe's troubles

This paper is situated within the global growing interest in the security of the Persian Gulf. Following the call for a pre-emptive air strike by the United States and Israel against Iran to crush or damage extensively its nuclear facilities, the debate on whether or not such an attack is justified and feasible, and what alternative strategy will yield the best result, had become of great concern among scholars around the world. This paper positions itself as an antagonist to the pre-emptive air strike option. It argues that the consequences of a pre-emptive air strike and its failure margin considering the location of the targeted facilities and the political situation in Iran have been seriously underestimated. It recommends that instead of a pre-emptive air strike, the Iranian nuclear programme crisis can be solved in a peaceful and more logical way, through technical isolation.     

低NOx浓淡火焰对冲燃烧技术及装置的研究

分析ＮＯｘ的形成与危害，研究浓淡火焰对冲燃烧抑制ＮＯｘ生成机理，探讨浓淡火焰对冲燃烧技术与装置。     

构建和谐社会必须消除的不和谐因素--城乡居民收入差距扩大的成因分析

我国目前正进入经济社会发展的关键阶段.这个发展阶段的特点有两个:一个是整个社会进入"黄金发展时期",经济社会协调发展;另一个是整个社会进入"矛盾凸现时期",经济社会徘徊不前,甚至出现社会动荡和倒退.这一阶段可能会呈现出两种社会发展前景:一是执政思路清晰,政策妥当,就可以进入和谐社会;二是执政党和政府政策失误,不但会使经济停滞不前,而且会激化社会矛盾,危及政权的稳定.具体分析我国社会目前所存在的一些不和谐因素,比如城乡居民收入差距扩大问题等,则能更加清楚地看出中央做出构建社会主义和谐社会这一决策的深谋远虑.     

不同铺装材料的颗粒物干沉积效果研究

以水泥板为对照项,根据干沉积量,研究了不同气象条件下水面、碎石、陶粒、卵石和塑胶垫等材料的固尘效果。结果表明,碎石等固体铺装材料的干沉积量与材料表面的粗糙度呈正相关性,与风速呈负相关性;碎石固尘效果好、价格低廉,是北方缺水城市优先选择的铺装材料。     

关于国内客运航班延误的几个法律问题--兼及相关法律的完善

在航空运输中,由于多种原因,航班延误难以避免,因航班延误引起的纠纷时有发生.现行的民航法及相关法规对于航班延误的定义、承担延误的责任原因、承担责任的方式、延误赔偿限额等问题或者没有规定,或者规定太原则、笼统、不统一,缺乏可操作性.时至今日,关于航班延误的诸多问题仍然不能"依法解决".有关部门应当尽快制定并完善相关法律法规,使航班延误的处理工作步入法制化的轨道,依法解决航班延误的有关问题.     

A simple and effective image-statistics-based approach to detecting recaptured images from LCD screens

It is now extremely easy to recapture high-resolution and high-quality images from LCD (Liquid Crystal Display) screens. Recaptured image detection is an important digital forensic problem, as image recapture is often involved in the creation of a fake image in an attempt to increase its visual plausibility. State-of-the-art image recapture forensic methods make use of strong prior knowledge about the recapturing process and are based on either the combination of a group of ad-hoc features or a specific and somehow complicated dictionary learning procedure. By contrast, we propose a conceptually simple yet effective method for recaptured image detection which is built upon simple image statistics and a very loose assumption about the recapturing process. The adopted features are pixel-wise correlation coefficients in image differential domains. Experimental results on two large databases of high-resolution, high-quality recaptured images and comparisons with existing methods demonstrate the forensic accuracy and the computational efficiency of the proposed method.