治理河流污染的制度激励悖论分析

为了治理日益加剧的河流污染,从中央到地方都相应出台了各种激励措施,但是这些措施并未起到显著效果,却形成了制度激励悖论。排污企业与地方政府在经历了新政策出台初的短暂扰动后,恢复原有均衡。要打破这一均衡,必须改变博弈各方的收益结构、可选策略集以及信息结构等,才有望建立符合科学发展观的最优均衡。     

完善我国大型国有企业政府董事制度建设的途径

目前,我国大型国有企业改革的重点在于公司治理的完善,而其关键在于建设强大而有效的董事会,其中政府董事制度的建立是完善大型国有企业董事会建设的核心。本文提出了政府董事的概念,并分析了其在国有企业董事会中的职责,在此基础上以青岛啤酒股份有限公司为例探讨了我国大型国有企业政府董事制度建设的现状与存在的问题,进而提出了如何完善我国政府董事制度建设的途径。     

网络参与下的政府行为选择

网络参与具有技术性与政治性、普遍性与特殊性、间接性与直接性、有序性与无序性等多向度、双重性的特点。这些特点的交织,决定了网络政治参与既可能有利于推进民主政治发展的进程,又可能使政府行政陷入困境。因此,担当公共责任、增强回应能力、引导有序参与,是我国政府的必然选择。     

地方政府公共服务供给能力:影响因素与实现路径

公共服务均等化是和谐社会的重要内容,而地方政府公共服务供给能力提升是公共服务均等化目标实现的重要保障。传统观点认为,地方经济或财政实力决定地方政府公共服务供给能力,但是,我们认为公民参与、社会组织、信息沟通、电子政务技术等对地方政府公共服务供给能力提升更具影响力。在公共治理理论框架下,本文分析了影响地方政府公共服务供给能力提升的经济、政治与社会综合因素,并在此基础上,提出了系统提升地方政府公共服务供给能力的实现路径。     

Where Are Sino-U.S. Relations Headed?

Sino-U.S.relations have fluctuated since the beginning of 2010. What are prospects for their development? Will it be fiercer strategic competition or will it be long-term strategic stability? Taking into the international system and transitions in global power,this essay analyzes recent changes in Sino-U.S. relations and U.S. strategic assessment of China. Prospects for and future trends in Sino-U.S. relations will be discussed. Since Sino-U.S. relations have always been based on the interaction of multiple...     

Mitochondrial DNA Extraction from Burial Soil Samples at Incremental Distances: A Preliminary Study

Preservation variance of soil DNA is neglected in the literature, and exceptional cases exaggerate amplification capabilities. This study sought to amplify a short mitochondrial fragment (212 bp) specific to Sus scrofa domesticus from the soil surrounding decomposing pig remains from an open‐air locale. Samples collected above the body at incremental distances after 145 days of initial placement yielded pig DNA. A secondary sampling was collected in 2017, approximately 768 days after burial. Inhibition tests corroborated that pig DNA was no longer present in the soil resulting in a loss of original DNA between 145 and 768 days. The results provide evidence that genetic material leaches out radially from the source and DNA fragments longer than 200 bp do not persist in soil for a relatively short timeframe in western Montana. The conclusions support the collection of soil in crime scene investigation procedures within the first few months of decomposition.     

Using Cluster Analysis and ICP‐MS to Identify Groups of Ecstasy Tablets in Sao Paulo State,Brazil

The variations found in the elemental composition in ecstasy samples result in spectral profiles with useful information for data analysis, and cluster analysis of these profiles can help uncover different categories of the drug. We provide a cluster analysis of ecstasy tablets based on their elemental composition. Twenty‐five elements were determined by ICP‐MS in tablets apprehended by Sao Paulo's State Police, Brazil. We employ the K‐means clustering algorithm along with C4.5 decision tree to help us interpret the clustering results. We found a better number of two clusters within the data, which can refer to the approximated number of sources of the drug which supply the cities of seizures. The C4.5 model was capable of differentiating the ecstasy samples from the two clusters with high prediction accuracy using the leave‐one‐out cross‐validation. The model used only Nd, Ni, and Pb concentration values in the classification of the samples.     

Hierarchical,Three‐Dimensional Measurement System for Crime Scene Scanning

We present a new generation of three‐dimensional (3D) measuring systems, developed for the process of crime scene documentation. This measuring system facilitates the preparation of more insightful, complete, and objective documentation for crime scenes. Our system reflects the actual requirements for hierarchical documentation, and it consists of three independent 3D scanners: a laser scanner for overall measurements, a situational structured light scanner for more minute measurements, and a detailed structured light scanner for the most detailed parts of tscene. Each scanner has its own spatial resolution, of 2.0, 0.3, and 0.05 mm, respectively. The results of interviews we have conducted with technicians indicate that our developed 3D measuring system has significant potential to become a useful tool for forensic technicians. To ensure the maximum compatibility of our measuring system with the standards that regulate the documentation process, we have also performed a metrological validation and designated the maximum permissible length measurement error E_MPE for each structured light scanner. In this study, we present additional results regarding documentation processes conducted during crime scene inspections and a training session.     

论日本的朝鲜半岛政策与日韩邦交正常化

“二战”后日本总的朝鲜半岛政策就是“两个朝鲜”政策。以此为前提,在不同的历史时期,日本根。据国际、国内形势的变化,采取了不同的具体对韩政策。20世纪60年代以前,处于战后复兴阶段的日本,为自身的国家利益考虑,在对朝鲜半岛殖民统治的认识、韩国对日请求权、日韩渔业纷争、在日朝鲜人等问题上对韩采取了强硬政策。之后,随着日本经济的高速增长和美国东亚政策的调整,日本从现实的国家利益及配合美国的东亚战略的角度出发,搁置日韩在殖民统治认识问题上的争议,迅速着手解决影响当代日韩关系发展的最大障碍——韩国对日请求权问题和日韩渔业纷争问题,实现了日韩邦交正常化。