国外城市机场噪声治理的多元路径及其启示

20世纪80年代以来,随着中国城市发展速度的持续提升,各级各类城市机场的建设步伐也不断加快,时至今日,机场已经成为了许多城市重要的对外交通枢纽和新的城市商业中心。但以噪声污染为重要表征的负外部性输出,在中国城市机场也呈现出蔓延之势。文章通过相关文献资料梳理发现,国外对城市机场噪声的治理一般通过机场规划、降噪技术、噪声征税、制度规制、强化绿化等多种路径展开。了解国外治理城市机场噪声的实践探索,对于我们寻求中国城市机场噪声治理的未来道路,具有重要的启示和借鉴意义。     

李渔传人沈心友述考

沈心友作为李渔的传人,得到妇翁言传身教,能诗能文,目前已发现有二十余篇作品传世,首先是编书评书的好手,才成为刻书印书的内行.其先是协助李渔创建并管理翼圣堂——芥子园书坊,后来则独立主持经营杭州与金陵抱青阁书坊.其在经营刻书业的过程中,继承了李渔的特色书策略、畅销书策略、新书预告策略、家族传承策略,为清初刻书业作出了自己独特的贡献,是中国出版史上一位颇有作为的书坊主人.     

The disembedded digital economy: Social protection for new economy employment in China

This research focuses upon employment in the new economy, exploring labour protection and social protection in the digital age in China. Through an empirical survey conducted in three Chinese cities, social insurance and the labour rights of employees in the digital economic sector, such as gig employment, e-commerce, and various other forms of online employment, have been examined in-depth. This study reveals new regulatory loopholes in the digital labour market, which have substantially eroded the basis of social policy arrangements in China, “softening” participation in social insurance branches and compliance with labour regulations remarkably. Drawing upon the theoretical concepts of Polanyi on embeddedness and disembeddedness, we argue that the digital employment sector in China has been increasingly disembedded from social institutions and social control. The new configuration in the digital field of social policy requires novel conceptual models and institutional settings to cope with increasing social risks in virtual spaces.     

A New Methodology for Before–After Safety Assessment Using Survival Analysis and Longitudinal Data

The widely used empirical Bayes (EB) and full Bayes (FB) methods for before–after safety assessment are sometimes limited because of the extensive data needs from additional reference sites. To address this issue, this study proposes a novel before–after safety evaluation methodology based on survival analysis and longitudinal data as an alternative to the EB/FB method. A Bayesian survival analysis (SARE) model with a random effect term to address the unobserved heterogeneity across sites is developed. The proposed survival analysis method is validated through a simulation study before its application. Subsequently, the SARE model is developed in a case study to evaluate the safety effectiveness of a recent red‐light‐running photo enforcement program in New Jersey. As demonstrated in the simulation and the case study, the survival analysis can provide valid estimates using only data from treated sites, and thus its results will not be affected by the selection of defective or insufficient reference sites. In addition, the proposed approach can take into account the censored data generated due to the transition from the before period to the after period, which has not been previously explored in the literature. Using individual crashes as units of analysis, survival analysis can incorporate longitudinal covariates such as the traffic volume and weather variation, and thus can explicitly account for the potential temporal heterogeneity.     

论《四库总目》文学批评的经世价值取向

明末清初 ,宋明理学已经发展到极端 ,于是清初文人倡导儒家传统的经世致用思想以救理学空疏浮泛之弊 ,经世思想成为一时社会思潮的主流。《四库全书总目》的文学批评无论是功用价值论、创作主客体论还是艺术风格论都由此而带上浓郁的经世色彩     

内核级并发通信的研究

提出了一种内核级并发消息通信机制。该机制采用对象传送协议和动态线程池技术,并通过会话控制完成数据的收发过程,将线程池设计为二级阻塞队列来暂缓线程的撤销过程,从而保证既能够快速响应客户请求,又可减少因频繁创建和撤销线程而消耗系统的资源和时间,为分布式操作系统提供了高效可靠的通信服务。     

论八股文的不同品位——兼谈古代文化研究中的实事求是态度

实事求是看,明清八股文存在着“境界八股文”与“功名八股文”的对立。在明清文人的八股文理论中,区别八股文的不同品位成为一个很突出的主题。衡量八股文的首要标准应该看其作者是否文行一致———文的理论与行的实践的统一。明清两代一些有识之士是“境界八股文”的倡导者,也是八股文道德境界的实践者。承认八股文不同品位的客观存在,才能更清晰地认识八股文的有效职能,了解八股取士制度能延续近五百年的根本原因,进而回答中国封建社会何以存在如此长久的问题。     

统一规制经济垄断与行政垄断的必要性与紧迫性

我国反垄断法所应规制的垄断一直是一个众说纷纭的问题。本文从经济垄断和行政垄断的共性的角度 ,提出了我国反垄断法应统一规制经济垄断和行政垄断。这不仅是建立社会主义市场经济的需要 ,也是我国入世后的必然要求     

受内压圆柱筒体开孔-接管区应力集中的有限元分析

利用 ANSYS有限元分析软件通过三个算例对圆柱形筒体小开孔直接管区、大开孔直接管区、大开孔斜接管区的应力分布状况进行了研究 .从中了解到了最大第一主应力的变化规律 ,得出在弹性范围内的应力集中系数 ,并且得到ASME规范中的算式较好的验证     

中国企业知识管理系统实施的现状与对策

知识经济带来了激烈的竞争 ,我国企业的生存环境不仅潜伏着巨大的风险 ,也蕴含着无尽的机遇。本文探讨了知识管理、知识管理系统以及企业知识管理的内涵 ,并分析研究了中国企业知识管理系统实施的现状。指出 ,当前在中国企业界对知识管理的需求 ,已经从认识过渡到实施阶段 ,而如何根据中国企业界的现状 ,制定切实可行的发展战略和实施方案正是本文探讨的重点