Improved Area of Origin Estimation for Bloodstain Pattern Analysis Using 3D Scanning

An important component of crime scene reconstruction is bloodstain pattern analysis (BPA). Where BPA concerns impact patterns, estimating the area of origin is critical information for scene reconstruction. Traditionally, this is achieved by measuring individual bloodstains and performing trigonometric calculations; however, 3D scanning has been proposed as a viable alternative for overcoming logistical and practical concerns with the manual method. Therefore, this project aimed to establish whether the FARO Focus 3D scanner and FARO Zone 3D software can improve the accuracy of area of origin estimates relative to the manual method. We created a series of eight bloodstain impact patterns and performed paired analysis using the two methods to estimate areas of origin for each pattern. Our data suggested that FARO-derived estimates were generally more accurate than using the manual method. FARO-estimated heights of origin areas were generally closer to the true distance. Both methods underestimated the distance from the wall for most patterns originating 150mm or greater from the wall, but overestimated distances for patterns originating closer to the wall. The degree to which distances were underestimated increased significantly the further the blood source was from the wall and was greater for FARO-derived estimates. The results of this research contribute to the validation of these instruments for operational implementation for BPA and should be considered alongside the practical benefits of 3D scanning relative to manual methods. Further, 3D scanning can provide reliable BPA reconstruction documentation for technical review and court presentation.     

How to share and utilise expertise in a police forensic department through externalisation and mutualisation

The technique of fire investigation is a forensic domain in which expertise and analogies play a central role. To learn how fire investigators use these analogies to support their work, we conducted an ethnographic study in a Swiss forensic police department. To propose a suitable knowledge-management strategy, we also evaluated the knowledge conservation and sharing within the department. Our results highlighted that actionable knowledge is registered mainly in the investigators’ memories of a few, very experienced, individuals. Without experience with fire-incident investigations, an agent generally requires help from a more experienced colleague, who will then use his memory to find a similar case, which can contribute to the solution of the ongoing one. The research also established that knowledge is exchanged orally during on-site investigations and that knowledge receivers are generally those who are present on the scene. Using these findings, we suggest building a case library to support the externalisation and sharing of knowledge.     

论我国侦查程序中法官角色的重塑

侦查程序的正当化系现代法治国家刑事诉讼文明的重要标志,而法官的应然作用对侦查程序的正当化起关键性作用。我国侦查程序中法官应然角色作用缺失,形成种种弊端,严重违背程序正义理念的要求,亟待予以重新塑造,以充分保障人权,促进我国刑事诉讼文明、民主的进程。     

陕西省家畜虱类的调查

虱类对家畜的危害是众所周知的,经调查,陕西省家畜的虱类隶属于 5科8属17种:①驴血虱Haematopinus asini;②猪血虱H.suis;③阔胸血 虱H.eurysternus;④瘤突血虱H.tuberculatus;⑤非洲颚虱Linognathus africanus;⑥牛颚虱L.vituli;⑦狭颚虱L.stenopsis;⑧毛管虱Solenopsescapillatus;⑨鸡短角羽虱Menopon gallinae;⑩草黄短角羽虱M.stramineus;⑾异形长羽虱Eipeurus heterographus;⑿阉鸡长羽虱L.caponis; ⒀鸡圆羽虱Goniocotes gallinae;⒁不同角羽虱Goniodes dissimilis; ⒂牛毛虱Damalinia bovis; ⒃马毛虱D.egui;⒄山羊毛虱D.caprae。文内附有以上17种畜虱的检索表。文内采用了近年来欧洲学者趋向于作为一个虱目Pht-hiraptera的分类意见,并对各种畜虱的中文译名提出了初步修订意见。     

信息语境下的侦查路径分析

社会分工条件下侦查主体面临着信息成本无限扩张与侦查能力相对有限之间的矛盾,社会变迁及科技发展为侦查主体加强对个体信息的渗透提供了无限可能,但这种可能性受到私权的严格限制。信息交易为侦查主体提供了一种新的低代价的信息获取渠道。     

对扬州市女职工维权状况的调查与思考

女职工在推进经济发展和社会进步中有着重大作用。随着市场经济的发展,女职工的素质有了明显的提高,同时也面临着严峻的挑战。工会组织应当在新的形势下,采取针对性的措施,维护好她们的合法权益。     

谈涉网犯罪——涉网犯罪案件剖析

涉网犯罪在刑事案件发案中所占比例呈上升趋势,利用网络为犯罪提供各种服务的刑事案件越来越普遍.文章结合各种形式的涉网犯罪,对涉网犯罪案件利用网络寻找犯罪对象、准备犯罪工具、联络同伙、实施犯罪、销赃等情况进行仔细剖析,帮助侦查人员了解涉网犯罪,发现犯罪与网络具有的联系,为研究涉网犯罪侦查提供思路.     

现代侦查权力的规制原则与我国侦查程序改革

现代侦查权力本质上是一种宪法权力,宪政的基本原理决定了宪法权力是一种受宪法和权利规制的权力。因此,现代法治国家均要求侦查权力依循宪法权力的内在理路而具有规范化、程序化、可救济性等特点。规范化要求强制侦查措施贯彻法定主义和令状主义;程序化追求控辩平等与独立的程序价值,体现为比例原则和辩护原则;可救济性要求侦查权力的程序性违法行为得到相应的实体性和程序性制裁。     

论侦查观念及其理论基础

宏观上的侦查观念主要包括侦查程序意识、侦查诉讼意识和侦查均衡意识。侦查程序意识的理论基础是侦查程序具有独立价值,即其本身应具有公正性、人道性等价值要求,侦查程序具有使侦查结果正当化的作用;侦查诉讼意识的理论基础是明确侦查是一项诉讼性认识活动,区别技术角度和诉讼角度,区分侦查与侦查程序、侦查程序与侦查策略、侦查的技术规则和侦查的程序规则等相关概念;侦查均衡意识的理论基础是侦查活动具有多元价值目标,应对发生冲突的价值目标进行均衡和抉择,当必须作出选择时,应以有利于实现维护法治利益和社会秩序这一根本目的为取舍标准。     

论侦查机关的告知义务

刑事追诉机关在初次讯问犯罪嫌疑人或对其羁押时,应当告知其享有的诉讼权利.这是受刑事追究者获得告知的权利,也是刑事追诉机关的告知义务.现代人权保障制度的发展,不仅要求侦查、检察机关履行告知义务,而且应当依法允许犯罪嫌疑人行使其诉讼权利,并为其权利的实现提供保障.以侦查阶段的初次讯问为对象,对告知义务进行考查,比较美英加法德等国以及我国台湾刑事诉讼法对初次讯问时的告知义务的规定,剖析我国相关法律规定的问题所在,进而对完善我国侦查阶段初次讯问时的告知义务提出了建议.