Combined Collection and Analysis of Inorganic and Organic Gunshot Residues

Gunshot residue (GSR) analysis and their interpretation provide crucial information on a criminal investigation involving the use of firearms. To date, several approaches have been proposed for the implementation of a combined sampling and analysis of inorganic (IGSR) and organic GSR (OGSR). However, it is not clear at this stage if concurrent analyses of both types of residue might be detrimental to the analysis of IGSR currently applied in forensic laboratories. Thus, this work aims to compare and evaluate three different protocols for the combined collection and analysis of IGSR and OGSR. These methods, respectively, involve the use of a modified stub (with two halves, one for the detection of IGSR and the other for the analysis of OGSR); the sequential recovery of GSR with two stubs mounted with different adhesives (double-sided carbon tape and Tesa® TACK) and the sequential analysis of IGSR and OGSR from a single carbon stub following carbon deposition. The detection of IGSR was carried out using SEM-EDX, while OGSR analysis was performed using ultra-high-performance liquid chromatography–tandem mass spectrometry (UHPLC-MS/MS). Obtained results for experiments performed using Geco Sinoxid^® ammunition indicated that sequential analysis was the most suitable protocol for the combined collection and analysis of both IGSR and OGSR. A higher number of inorganic (characteristic and consistent) particles and higher concentrations of ethylcentralite, N-nitrosodiphenylamine, diphenylamine, and nitroglycerin were recovered with this method.     

再论公安工作与群众路线

坚持和贯彻群众路线是公安机关的优良传统和特色。在新世纪新形势下,公安机关必须继承和发展群众路线,解放思想,与时俱进,不断创新群众路线,从而更加有效地发挥职能作用。     

How mass media attract political elites’ attention

Political agenda‐setting research has shown that policy makers are responsive vis‐à‐vis media priorities. However, the mechanisms behind this effect have remained understudied so far. In particular, agenda‐setting scholars have difficulties determining to what extent politicians react to media coverage purely because of the information it contains (information effect), and to what extent the effect is driven not by what the media say but by the fact that certain information is in the media (media channel effect), which is valued for its own sake – for instance, because media coverage is considered to be a reflection of public opinion. By means of a survey‐embedded experiment with Belgian, Canadian and Israeli political elites (N = 410), this study tests whether the mere fact that an issue is covered by the news media causes politicians to pay attention to this issue. It shows that a piece of information gets more attention from politicians when it comes via the media rather than an identical piece of information coming via a personal e‐mail. This effect occurs largely across the board: it is not dependent on individual politician characteristics.     

Sectoral linkages at the beginning of the 21st century: The role of Polish economy in global production structures

This paper provides a first attempt in analyzing the role of Polish economy in the production structure of the global economy in the early years of the 21st century. For the purpose of this analysis, we propose a new approach in which two most important aspects of interindustry linkages in a global input-output model are examined. Contrary to previous studies focused on output-oriented key sector analyses in post-communist CEE economies, we focus on a fundamental policy target variable – income per gross output. In order to analyze the issues in question in a dynamic framework, the empirical results are based on the 2000 and 2014 global intercountry input-output tables for the 28 EU countries as well as 15 other major countries in the world.     

论网络“人肉搜索”在侦查工作中的运用

网络人肉搜索是在现代信息科技手段的辅助下,人工参与并提纯信息的一种新兴信息获取方式。实践证明,人肉搜索强大的搜索能力有助于侦查部门查明犯罪嫌疑人身份、锁定犯罪嫌疑人位置、扩大破案线索、查明尸源。人肉搜索在侦查中的运用,是网络时代侦查破案的新途径,是侦查工作群众路线的新形式。在侦查工作中,人肉搜索的运用应当作为一种最后手段,在运用的范围、条件和程序上进行严格控制,在运用方法上要科学合理,兴其利而除其弊,合法地为侦查破案服务。     

FAT32文件数据手工恢复方法研究

本文首先对硬盘的基本结构及WINDOWS下的文件系统存储原理做概括性介绍,并且重点分析了FAT32文件系统的硬盘数据组织方式,接着对FAT表上的关于数据的修改和删除过程进行了分析研究,从而用磁盘编辑工具winHex修改和还原了彻底删除的数据。最后扩展数据恢复的运用领域,浅谈了数据恢复在计算机取证中的应用。进而突出数据恢复举足重轻的地位。     

群体性事件临战处置的战术探讨

群体性事件之所以难以处置,不仅在于群体性事件发生的原因杂、涉及广、人数众、局面乱,还在于指导公安机关处置群体性事件的意见和规定或过于抽象,或过于笼统,缺少适应性和操作性,跟不上治安形势的发展。尽管在群体性事件的临战处置中,警察的职责任务、警力调动、处置措施都有相应的规定,但目前从警察临战战术的层面进一步研究群体性事件的处置程序和方法,使之更具有操作性和针对性,仍是公安理论研究的一项迫切任务。     

Measuring subnational democracy: toward improved regime typologies and theories of regime change

Social scientists have been limited in their work by the paucity of global time series data about subnational institutions and practices. Such data could help scholars refine regime typologies, improve theories of democratization and regime change, better understand subnational democracy, and illuminate issues of development, conflict, and governance. This article addresses the lack of data by introducing 22 subnational measures from a new dataset, Varieties of Democracy. Validity tests demonstrate that the measures’ strengths outweigh their weaknesses. The measures excel in covering all subnational levels for most countries, capturing different elements of subnational elections, and including a variety of dimensions of elections and civil liberties. The measures also offer unmatched global and temporal coverage. The article demonstrates how these strengths can provide scholars with the benefits described above.     

Intra-Campaign Changes in Voting Preferences: The Impact of Media and Party Communication

An increasing number of citizens change and adapt their party preferences during the electoral campaign. We analyze which short-term factors explain intra-campaign changes in voting preferences, focusing on the visibility and tone of news media reporting and party canvassing. Our analyses rely on an integrative data approach, linking data from media content analysis to public opinion data. This enables us to investigate the relative impact of news media reporting as well as party communication. Inherently, we overcome previously identified methodological problems in the study of communication effects on voting behavior. Our findings reveal that campaigns matter: Especially interpersonal party canvassing increases voters’ likelihood to change their voting preferences in favor of the respective party, whereas media effects are limited to quality news outlets and depend on individual voters’ party ambivalence.     

Speaking Like Statesmen or Scientists: Differentiating Congressional and Administrative Views on Data

ABSTRACT

Do legislators and executives speak of data the same way when speaking about public sector data? Public management scholarship and public performance policies often emphasize data-driven decision making as the path to making government efficient and effective. Whether the public policy makers mean the same thing when they speak about data in discussions of data-driven performance and decision making is unknown. In this article, the authors present an analysis of the language of data in conversations about government performance. Two frameworks are identified for the role of data in public performance—the statesman’s and the scientist’s. A corpus-level analysis of over 30 years of government documents is used to demonstrate the differences between these two approaches. This research builds consciously on the work of previous scholars seeking to map the nuances of data-driven performance management policies in the U.S. federal government.