民爆公共安全研究范畴之探讨

民爆公共安全课题是通过对民用爆炸物品引发的公共安全现象和问题的研究,揭示民爆公共安全规律的科学。因此,民爆公共安全的现象、本质、规律成为民爆公共安全的研究对象。而民爆公共安全研究对象的具体化就是民爆公共安全研究的内容,它主要包括民爆本体研究、民爆公共安全现象研究和民爆公共安全对策研究三个部分。     

Android forensics: Automated data collection and reporting from a mobile device

In this research, a prototype enterprise monitoring system for Android smartphones was developed to continuously collect many data sets of interest to incident responders, security auditors, proactive security monitors, and forensic investigators. Many of the data sets covered were not found in other available enterprise monitoring tools. The prototype system neither requires root privileges nor the exploiting of the Android architecture for proper operation, thereby increasing interoperability among Android devices and avoiding a spyware classification for the system. An anti-forensics analysis on the system was performed to identify and further strengthen areas vulnerable to tampering. The contributions of this research include the release of the first open-source Android enterprise monitoring solution of its kind, a comprehensive guide of data sets available for collection without elevated privileges, and the introduction of a novel design strategy implementing various Android application components useful for monitoring on the Android platform.     

旅客列车爆炸现场勘验研究

旅客列车爆炸现场勘验研究@肖发民$郑州铁路公安局技术处!河南郑州450052 @贾永生$铁道警官高等专科学校学报编辑部!河南郑州450053 @张宪敏$郑州铁路公安处技术科!河南郑州450052 @侯占伟$广州铁路公安局刑侦处!广东广州510088~~~~     

铁路线路爆炸案件现场勘验研究

铁路线路爆炸是反映铁路线路爆炸发生原因、过程和结果的物质基础。铁路线路爆炸案件现场特殊性是由铁路的行业性、爆炸的特性和铁路在社会交通中的重要地位所决定的。铁路线路爆炸现场的特点 :1.现场存留从属于线路开通 ;2 .炸点通常为炸坑、轨断或轨变 ;3.线—车现场构成的特殊性 (车底爆炸形成下压 ) ;4 .爆炸物证受到地形地貌影响突出 ;5 .现场位置常为线路偏僻要害处。铁路线路爆炸现场勘验的重点 :1.判定炸点 ;2 .推断爆炸装置 ;3.估算炸药重量 ;4 .确定爆炸性质 ;5 .分析现场环境格局 ;6 .判定犯罪嫌疑人。     

An Impact Velocity Device Design for Blood Spatter Pattern Generation with Considerations for High‐Speed Video Analysis,

A mechanical device that uses gravitational and spring compression forces to create spatter patterns of known impact velocities is presented and discussed. The custom‐made device uses either two or four springs (k₁ = 267.8 N/m, k₂ = 535.5 N/m) in parallel to create seventeen reproducible impact velocities between 2.1 and 4.0 m/s. The impactor is held at several known spring extensions using an electromagnet. Trigger inputs to the high‐speed video camera allow the user to control the magnet's release while capturing video footage simultaneously. A polycarbonate base is used to allow for simultaneous monitoring of the side and bottom views of the impact event. Twenty‐four patterns were created across the impact velocity range and analyzed using HemoSpat. Area of origin estimations fell within an acceptable range (ΔX_av = ?5.5 ± 1.9 cm, ΔY_av = ?2.6 ± 2.8 cm, ΔZ_av = +5.5 ± 3.8 cm), supporting distribution analysis for the use in research or bloodstain pattern training. This work provides a framework for those interested in developing a robust impact device.     

私藏爆炸物治理对策

私藏爆炸物是严重威胁公共安全的违法犯罪行为,但由于利益驱动、涉爆从业单位管理措施不落实,有关部门发现、查处、打击不力等因素,私藏爆炸物行为屡禁不止,频频引发爆炸事故,给公安机关民爆物品安全管理工作造成巨大的冲击和影响。因此,必须认真研究管理对策,强化治理,有效遏制爆炸事故的发生。     

Forensic Investigation of Cooperative Storage Cloud Service: Symform as a Case Study

Researchers envisioned Storage as a Service (StaaS) as an effective solution to the distributed management of digital data. Cooperative storage cloud forensic is relatively new and is an under‐explored area of research. Using Symform as a case study, we seek to determine the data remnants from the use of cooperative cloud storage services. In particular, we consider both mobile devices and personal computers running various popular operating systems, namely Windows 8.1, Mac OS X Mavericks 10.9.5, Ubuntu 14.04.1 LTS, iOS 7.1.2, and Android KitKat 4.4.4. Potential artefacts recovered during the research include data relating to the installation and uninstallation of the cloud applications, log‐in to and log‐out from Symform account using the client application, file synchronization as well as their time stamp information. This research contributes to an in‐depth understanding of the types of terrestrial artifacts that are likely to remain after the use of cooperative storage cloud on client devices.     

Visualizing Digital Forensic Datasets: A Proof of Concept

Digital forensic visualization is an understudied area despite its potential to achieve significant improvements in the efficiency of an investigation, criminal or civil. In this study, a three‐stage forensic data storage and visualization life cycle is presented. The first stage is the decoding of data, which involves preparing both structured and unstructured data for storage. In the storage stage, data are stored within our proposed database schema designed for ensuring data integrity and speed of storage and retrieval. The final stage is the visualization of stored data in a manner that facilitates user interaction. These functionalities are implemented in a proof of concept to demonstrate the utility of the proposed life cycle. The proof of concept demonstrates the utility of the proposed approach for the storage and visualization of digital forensic data.     

Independence day explosion on lovers key

The display of fireworks is a popular holiday celebration in the United States. Because injuries due to recreational fireworks-related explosions among private consumers are relatively common, the sale of fireworks is regulated by the federal government and is also limited by state and local laws. In contrast, because fireworks display companies are under tight safety regulations, explosions in the professional pyrotechnics industry are uncommon occurrences, and the literature contains rare reports of injuries and fatalities resulting from such explosions. We report the 2003 Fourth of July commercial fireworks explosion on Lovers Key in southwest Florida that resulted in five fatalities. Events occurring during the investigation of the scene of this explosion illustrate the unique considerations and hazards for medicolegal death investigators, law enforcement and other investigative agencies. Additionally, this case demonstrates unusual aspects of the postmortem examinations performed on victims of fireworks-related incidents.     

汽车和挂车后下部防护装置安装使用现状分析

后下部防护装置是减少高速公路小车追尾货车事故的重要技术手段,但现阶段这一装置的应用状况普遍较差,导致社会危害和给社会造成的损失巨大。要从根本上改变目前这一状况,需要从多方面入手加以整治。