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。     

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。     

孔明苑——博物馆陈列新尝试

长期以来关于诸葛亮事迹的展览一直阙如，今成都武侯祠决定将听鹂馆重点改造，更名为孔明苑。文章详细论述了新一届领导班子上任后克服重重困难，进行了从展陈内容、展陈方式和展陈效果方面充分体现游客的参与性的大胆改造。通过此次尝试，成都武侯祠博物馆获得了一定的经验，为使孔明苑成为专门展示诸葛亮文化的地方，并最终形成“三国文化收藏、研究、展示中心”，奠定了基础。     

微量热法在酶促反应热动力学性质研究中的应用

讨论了用微量热法测定酶促反应的米氏常数，酶活性，表观速率常数及表观活化能等动力学参数的实验方法和测定原理．介绍了摩尔反应焓的测定和计算方法，并借助过渡状态理论，探讨了酶底复合过程的吉氏自由能、焓和熵等热力学函数值的测定和计算方法     

再论实习心理的调适与强化

在1989年进行的“实习心理调适与强化”的课题研究基础上,以实际调查数据为根据,运用心理学理论,结合多年的工作经验,分析了如何从心理调适着手,强化实习效果的问题,并提出了一些建设性意见。     

浅析英国工业革命的市场条件

国内外市场的存在及市场需求的不断增长的压力是英国工业生产发展的主要动因。英国可资利用的市场规模远较欧洲其它国家的市场大,这大大便利了英国工业品的生产与销售。英国市场的性质也有助于工业再生产的进行。     

载波相位平滑GPS伪码伪距的研究

分析了全球定位系统接收机可获取的观测量。给出了载波相位平滑伪码伪距的一个递归算法结构。讨论了平滑算法初值的设定和构造伪距前向预测值，并对各种情况进行了统计分析。文中还给出了平滑算法的性能评估，结论表明载波相位平滑技术可大大改善伪距观测精度。改善程度与该算法中的权重因子和递归时间密切相关