变点检测问题最新进展综述

变点检测问题研究是统计学与数学、计算机科学、数据挖掘等众多学科交叉的新兴研究领域。论文详细回顾与述评了2001-2011年的最新国内外变点问题研究状况,并从不同的角度对变点检测问题进行合理分类,同时展望了变点检测问题研究的未来发展方向。     

西南少数民族地区县域经济发展实证研究——以四川省阿坝藏族羌族自治州为例

发展和壮大县域经济是边远少数民族地区摆脱贫困、促进就业、化解"三农"问题、民族团结、巩固基层政权的重要举措。在此,以四川省阿坝藏族羌族自治州为例,通过引入城镇化水平、第二产业、第三产业增加值等影响经济发展的重要变量,建立线性回归模型。根据模型的分析结果,提出了促进阿坝经济发展的一些政策及路径的选择。     

对群体性事件的群众观点分析

探讨群体性事件是当前乃至今后一个时期我国维护社会和谐稳定的一项重要课题。群众观点是唯物史观的本质要求,是无产阶级政党的显著特征,也是我们正确处理党群关系、干群关系的基本准则。近年来发生的一些群体性事件,损害了党群关系和干群关系,其根源在于严重脱离人民群众,预防和处置的根本之道是牢固确立和扎实践行群众观点,并将之融入到日常工作中。     

关于社会科学中量化研究的深层思考

在量化研究中,研究者通常从特定的研究假设出发,通过对抽象概念的操作化定义确定变量,并运用问卷、量表、结构式访谈与观察等方法收集资料,然后进行统计分析来检验研究假设。本文旨在探讨量化研究的本体论前提,并从认识论和方法论视角分析量化研究中的可靠性和有效性问题。     

Toward multidimensional information: A derivatization-free UHPLC-QqQ MS/MS method for amino acid components of fingerprint

The analysis of fingerprint chemical composition is a meaningful way to excavate the multidimensional information of fingerprint, including the donor profiling information and the age of a fingerprint, which broadens the evidential values of fingerprint, especially for the partial and distorted fingerprint. But the research remains still in the pilot phases or is ongoing. Amino acids are the dominant organic substances in latent sweat fingerprint and influenced by many donor factors. Hence, their content reflects personal information of donors. Forensic science will be revolutionized if suspects can be individualized by their amino acid content. The diverse nature, distinct physicochemical properties, and ultra-micro levels of amino acids present in fingerprints make it hard to detect. A high sensitivity method for detecting and quantifying multiple amino acid components is required. UHPLC-QqQ MS/MS offers high sensitivity, high separation, simultaneous multicomponents detection, and no derivatization, making it an ideal method for detecting and analyzing amino acids in fingerprints. Therefore, in this study, we propose and validate an efficient UHPLC-QqQ MS/MS method for the extraction and analysis of 13 amino acids from fingerprint. We compared the results of amino acids of 10 different substrates and found that the inherent amino acids in most porous substrates would have been extracted along with the fingerprint amino acids, making them unsuitable for quantitative amino acid analysis. Instead, plastic sheets are ideal substrates for laboratory studies. Then, extensive experiments were conducted among 30 donors for multidimensional information analysis. The type of samples analyzed were eccrine-rich fingerprints. A Binary Logistic Regression (BLR) model was developed, and the female and male donors were successfully differentiated by amino acids in fingerprints. Two other mathematical models were also developed to verify the accuracy, and all three different mathematical models were able to identify donors of different genders with over 90% accuracy. This demonstrates that amino acids have the potential to provide more information for donors as metabolic markers. In the future, we will conduct a series of experiments to analyze more multidimensional information for individual identification by amino acid content in the fingerprint.     

Survey Research in International Political Economy: Motivations,Designs, Methods

The use of surveys and survey experiments by international political economy scholars is increasing, adding to the ability to study a broad array of topics. In doing so, many scholars in international political economy draw on—and are contributing to—insights and arguments from American politics and comparative politics (Milner 1998), substantive fields with a history of using surveys and survey experiments. In this article, I review motivations for using surveys and survey experiments, the research designs, and analysis strategies in light of this issue’s contributions. I contrast these motivations and their accompanying designs and discuss the pros and cons of ways to approach the data generated by these research designs. The goal of this commentary is to situate surveys and survey experiments—especially those within the special issue—within a larger discussion about research motivations, design, and analysis techniques.     

广西边境旅游发展战略研究

边境旅游作为一种特殊的旅游形式,是依托相邻国家边境线上的自然、人文资源发展起来的一种新兴旅游方式,是国内旅游的延伸。它不仅可以繁荣边境地区的经济,还可以促进边境地区人民之间的友谊,巩固边疆的稳定,而且对整个国家的对外开放和国际经贸合作都起着非常重要的作用。广西作为全国少有的沿边、沿海省区,旅游资源得天独厚。但与其他边境地区相比,广西边境旅游发展仍然落后。文章在借鉴国内外发展边境旅游经验的基础上,结合广西边境地区旅游发展现状和存在问题,提出了广西边境旅游的发展对策。     

Researching counterterrorism: a critical perspective from the field in the light of allegations and findings of covert activities by undercover police officers

The article addresses some of the key issues that are raised for researchers engaging with counterterrorism police officers and initiatives, when undertaking research. A significant area to explore in this context is, in fact, the issue of relationships with counterterrorism police officers who may themselves directly have been covert police officers in the past and/or who may be continuing in their current, apparently more open, role (wittingly or otherwise) as agents of broader state strategies of exploiting trust for intelligence-gathering purposes. This article suggests that it is important for researchers to understand that working within the counterterrorism field involves degrees and shades of risk in the service of trust-building, sensitivity and the empowerment of communities, and that researchers themselves can (wittingly and unwittingly) be part of wider strategies instigated by security-minded individuals or groups of counterterrorism police officers. Reflecting upon the research that we have undertaken individually and collectively over the last number of years, in the light of the most recent spate of allegations about counterterrorism police officers infiltrating activist and political protest groups, having sexual relationships, and indeed, on occasion, children, with women whilst undercover and of potentially working to entrap vulnerable individuals into planning terrorist acts, this article raises questions around trust, credibility, legitimacy, the prevalence and near unavoidability of dysfunctional agendas and the implications of all of the above for community-based approaches to counterterrorism.     

为什么我们没有“新闻法”———反思我国新闻传播立法研究

我国改革开放以来的新闻立法历经30多年至今未果,无论法治社会的内在要求还是传媒领域的现实发展,都表明了迫切的新闻立法诉求。在“新闻法”尚不能出台的众多复杂原因中,学术研究的偏颇却总是被忽略,研究方法的迷失带来学理探讨的浅尝辄止,宏观研究的乏善可陈,以及学科之间的壁垒隔膜。其背后透露出不容回避的学术勇气的不足和技术细节研究的缺乏。基于新闻传播法学理论建设的推进和现实新闻传播立法的需求,应首先在思想和理论上明确：新闻自由是谁的自由,谁可以办报,如何协调采访报道和国家公权力的关系等问题,同时必须关注新闻传播立法技术的研究,如舆论监督的规范体系,为新闻来源保密的规则归属等细节问题。     

“交通肇事逃逸”责任认定实务问题研究

在我国道路交通事故中,交通肇事逃逸事故所占比重一直较高。交通肇事逃逸行为使受害者得不到及时救助而处于危险境地,更有甚者因失去救助机会而死亡。交通事故因现场证据的变动或消失而难以得到准确的认定和处理,各地出台的条例对逃逸事故认定的极端性以及出现同一类型的交通肇事逃逸事故因发生的辖区不同而出现截然不同的处理结果等问题都是导致受害者家属得不到及时赔偿而不断信访投诉的原因。结合自身多年处理交通事故的实践经验,研究分析了"交通肇事逃逸"事故责任认定现存的缺陷,提出了完善"交通肇事逃逸"事故责任认定的建议和意见。