以太网网络接口卡MAC永久地址与MAC当前地址的检验方法综述

本文综述了检验以太网网络接口卡MAC永久地址和MAC当前地址的方法,针对不同的检验客体提出了可行的检验方法。并提出了MAC在先检验的发展方向。     

A Comparison Between Digital Radiography,Computed Tomography,and Magnetic Resonance in the Detection of Gunshot Residues in Burnt Tissues and Bone

The radiological search for GSR is crucial in burnt material although it has been rarely tested. In this study, thirty‐one bovine ribs were shot at near‐contact range and burnt to calcination in an oven simulating a real combustion. Computed tomography (CT) and magnetic resonance (MR) were performed before and after carbonization and compared with former analyses with DR (digital radiography); thus comparing the assistance, the radiological methods can provide in the search for GSR in fresh and burnt bone. DR demonstrated the greatest ability in the detection of metallic residues, CT showed lower abilities, while MR showed a high sensitivity only in soft tissues. Thus, DR can be considered as the most sensitive method in the detection of GSR in charred bones, whereas CT and MR demonstrated much less reliability. Nonetheless, the MR ameliorates the analysis of gunshot wounds in other types of remains with large quantities of soft tissues.     

微滴式数字PCR技术用于生物样品种属鉴定和绝对定量

目的 运用微滴式数字PCR技术进行生物样品的种属鉴定和绝对定量.方法 选择人mtDNA两个编码基因ND4和16S rRNA,设计特异性引物与探针,用人来源及常见动物样本验证种属特异性,再用重组质粒和2组共16份人来源生物检材,倍比稀释.使用微滴式数字PCR技术进行种属检验和绝对定量,验证其灵敏度和稳定性.结果 人重组质粒FAM （ND4）可进行人来源样品的检测,其检测结果与各级稀释梯度基本吻合,微滴式数字PCR技术可以检测出反应体系中低至单拷贝的DNA.结论 微滴式数字PCR技术可以进行生物样品的种属鉴定和绝对定量,并具有很高的灵敏度和特异性,可应用于日常法医物证检验.     

针对进程用户空间的电子数据取证方法研究

进程用户空间中的信息往往与特定用户的特定操作行为直接关联,对于证据链的建立意义重大.从数目繁多的用户空间数据结构中筛选出最重要的三种：进程环境块、线程环境块与虚拟地址描述符,说明其定位方法,并重点讨论其结构格式的电子数据取证特性,为内存空间电子数据取证提供了新的思路与方法.实例分析部分,则以目前广泛使用的Windows 7操作系统为应用背景,说明了所述方法的具体应用.     

数字录音真实性司法鉴定研究现状

随着数字录音设备的普及,以及音频编辑技术的大众化趋势,传统的检验方法和技术在当前数字录音真实性司法鉴定实践中面临着极大的挑战。模式识别和人工智能等领域的最新进展为数字录音真实性鉴定提供了有效的检验角度。通过分析和总结当前机器学习和模式识别等研究领域在数字录音真实性研究方面的前沿探索性成果,结合对当前录音真实性司法鉴定实践应用中的关键技术和方法的论述,分析和探讨数字录音真实性司法鉴定领域研究所面临的问题、挑战及未来发展趋势。指出专家经验判断分析技术和统计量化检验方法的协作并存是数字录音真实性鉴定的必然趋势和高效解决方案。     

Windows Surface RT tablet forensics

Small scale digital device forensics is particularly critical as a result of the mobility of these devices, leading to closer proximity to crimes as they occur when compared to computers. The Windows Surface tablet is one such device, combining tablet mobility with familiar Microsoft Windows productivity tools. This research considers the acquisition and forensic analysis of the Windows Surface RT tablet. We discuss the artifacts of both the Windows RT operating system and third-party applications. The contribution of this research is to provide a road map for the digital forensic examination of Windows Surface RT tablets.     

商业数据权:数字时代的新型工业产权--工业产权的归入与权属界定三原则

商业数据界权包括确定其权利的性质和权利的归属。个人信息保护和数据安全法律体系的建成,为数据界权提供了新的逻辑起点和法律前提。数据界权首先应基于个人信息与数据、商业数据与公共数据等基本范畴的厘清。基于商业数据的固有性质以及工业产权的历史逻辑和制度内涵,商业数据与信息保护类工业产权具有深度的契合性,有必要将商业数据纳入工业产权序列,作为数字时代具有标志意义的一种新型工业产权,并可以成为与商业秘密相对称的商业数据权。商业数据界权需要确定商业数据的适格性--可保护条件。商业数据的适格性包括受保护数据的合法性、集合性、管理性、可公开性和商业价值性,即以合法形成的规模性数据集合为客体,并采取管理措施的可公开性技术数据和经营数据等信息。商业数据具有单一性、复合性和动态性,商业数据权暗含着所涉权利的分层性,其权属界定应当透过现象看本质,将复杂或者貌似复杂的问题简单化,遵循投入原则、分层原则和责任原则等三原则。     

Determination of average vehicle speed utilizing reverse projection

Reverse projection photogrammetry has long been used to estimate the height of an individual in forensic video examinations. A natural extrapolation would be to apply the same technique on a video to estimate the speed of an object by determining the distance traveled between two points over a set amount of time. To test this theory, five digital video recorders (DVRs) were connected to a single fixed camera to record a vehicle traveling down a track. The vehicle's speed was measured through Doppler radar by a trained operator and the speedometer of the vehicle was also recorded with a video camera. The recorded video was examined and the frames that best depict the beginning and end of the vehicles course were selected. Two reverse projection photogrammetric examinations were performed on the selected frames to establish the position of the vehicle. The distance between the two points was measured, and the time elapsed between the two points was examined. The outcome provided an accurate speed result with a standard degree of uncertainty. This study proves the feasibility of using video data and reverse projection photogrammetry to determine the speed of a vehicle with a limited set of variables. Further research is needed to determine how additional variables would impact the standard degree of uncertainty.     

国外数字政府研究二十年:热点聚类、演进脉络和发展趋势——基于Cite Space的可视化分析

本文以Web of Science核心文集库2001-2021年发表的353篇关于数字政府研究的文章为样本,运用Cite Space知识可视化软件,通过关键词共现图谱、关键词聚类图谱、演化路径知识图谱和关键词分析,总结了国外数字政府研究概况、国外数字政府研究热点聚类及其发展脉络。研究发现,从2001年起,国外数字政府经历了技术规制、智慧赋能和价值塑造三个阶段,包括十个重要研究聚类,可被分为知识促进、科技支撑、价值培养和合作体系四大主要研究内容。随着数字时代的新要求,数字科技革新和建设路径优化、公共数字伦理和数字素养提升、国家数字主权和公民数字保护预计将成为数字政府研究的热点问题。     

情境预防视阈下首都社区安全治理——基于北京市23个社区的调查分析

情境预防理论表明首都社区安全治理绝不能仅依赖警察为主体的国家强制力,而应通过社区情境的优化来达到"无为而治"的社区治理效果。基于对北京市23个社区的调查分析,发现社区物理环境显著影响着社区安全度,楼房社区-自住平房-公寓-出租平房形成自高至低的社区安全梯度,因此情境预防应融入社区物理环境的规划-设计-建设-维护流程。另外,社区社会情境同样显著影响着社区安全度,社会治安综合治理机制与社区警务机制作为安全网络的双重支柱,应由压力型体制下单向执行转向双向互动网络,而基于互联网与物联网的社区大数据平台应构成社区神经系统与实时自动监测系统。