网络赌博案件的侦查取证模式研究

随着互联网技术的发展，各类网络犯罪案件日益增多，尤其是网络赌博犯罪日渐猖獗。由于网络赌博犯罪具有空间跨度大、犯罪成本低、隐蔽性强和赌资流动性大等特点，这对侦查机关提出了挑战。笔者从网络赌博犯罪的特点入手、在分析网络赌博犯罪的侦查难点的基础上，提出了针对此类案件的侦查取证模式。基于此模式，侦查人员通过相关性、功能性和时间性等三方面的调查分析，进行网络赌博案件的侦查取证工作。     

媒介素养教育：高校文化建设的新举措

在数字时代，媒介文化严重浸染着高校文化，因而媒介素养成为信息社会对大学生素质提出的新要求，加强媒介素养教育、推进高校文化建设势在，必行。开展媒介素质教育，提升高校文化建设水平，是建设高校文化的重要工作，将成为当代高校文化发展新的生长点。     

数字证据、电子证据、科学证据、电子记录概念比较分析

与数字证据相关的概念很多,但它们的内涵和外延存在一定差异,从提出概念的出发点、载体、表现形式、研究范围等角度分析数字证据、电子证据、科学证据、电子记录等概念的差异,并进一步提出对数字证据进行专门研究的科学性和必要性。     

A simple technique for imaging the human skeleton using a flatbed scanner

A simple technique for imaging the human skeleton with a flatbed scanner is presented using the auricular surface of the ilium as an example. A flatbed scanner with resolution capabilities of 600 dpi or greater allows for images of human bones. The auricular surface of the ilium was selected to demonstrate this technique as it is a fairly three-dimensional area that can be difficult to record photographically. Fifty left ilia of various ages at death from the Athens Collection were selected from which three observers (SCF, CE, and IM) scored the morphology of the auricular surface using a well-established aging method. Observations were taken of the dry bone, of digital photographs of the bone, and of scanned images of the bone, and in that sequence. Results indicate that scores of scanned images are equivalent or better than digital images of the same ilia. This technique allows for sharing data electronically with ease.     

A method for studying knife tool marks on bone

The characteristics of knife tool marks retained on hard tissues can be used to outline the shape and angle of a knife. The purpose of this study was to describe such marks on bone tissues that had been chopped with knives. A chopping stage with a gravity accelerator and a fixed bone platform was designed to reconstruct the chopping action. A digital microscope was also used to measure the knife angle (θ) and retained V-shape tool mark angle (ψ) in a pig skull. The κ value (elasticity coefficient; θ/ψ) was derived and recorded after the knife angle (θ) and the accompanied velocity were compared with the proportional impulsive force of the knife and ψ on the bone. The constant impulsive force revealed a correlation between the V-shape tool mark angle (ψ) and the elasticity coefficient (κ). These results describe the tool marks--crucial in the medicolegal investigation--of a knife on hard tissues.     

Effect of Temperature on the Visualization by Digital Color Mapping of Latent Fingerprint Deposits on Metal

Visualization of fingerprint deposits by digital color mapping of light reflected from the surface of heated brass, copper, aluminum, and tin has been investigated using Adobe^® Photoshop^®. Metals were heated to a range of temperatures (T) between 50°C and 500°C in 50°C intervals with enhancement being optimal when the metals are heated to 250°C, 350°C, 50°C, and 300°C, respectively, and the hue values adjusted to 247°, 245°, 5°, and 34°, respectively. Fingerprint visualization after color mapping was not degraded by subsequent washing of the metals and color mapping did not compromise the visibility of the fingerprint for all values of T. The optimum value of T for fingerprint visibility is significantly dependent of the standard reduction potential of the metal with Kendall's Tau (τ) = 0.953 (p < 0.001). For brass, this correlation is obtained when considering the standard reduction potential of zinc rather than copper.     

全球视野下数字货币带来的反洗钱困境及对策——以比特币为例

近年来,以数字货币为媒介和手段的犯罪案件频发且涉案金额巨大。尽管各国执法机构不断颁发各种法律法规对此进行防范,但由于数字货币相较于传统货币具有特有的易用性、匿名性等多种特性,使其极难被发现,即使发现也难以收缴控制。文章从数字货币的概念入手,阐明了其与电子货币和虚拟货币的关系;以多种数字货币为实例,分析了其不同于传统货币的独有特性;并以此为基础,从警务实战角度出发,归纳总结了警察在侦查案件时需要注意的几点问题。     

扩大的权利与扩大的义务——数字艺术行为哲学论要

数字艺术是一种基于人工智能技术创生的新型艺术形态,其本质在于双重互动不确定性机制.在该机制的作用下,数字艺术行为秩序较之原子艺术行为秩序发生了重大而深远的变化.首先,数字艺术开拓出一种人人享有的创作权和传播权,消解了原子艺术秩序中的艺术创作特权和传播特权,数字艺术创作权利的本质是一种艺术发表权.其次,通过艺术发表权,数字艺术衍生出一种原子艺术秩序没有的艺术接触权,接触权也是一种普遍的、平等的、人人共享的艺术权利.另外,数字艺术还抑制了主权者的艺术监管权力.数字艺术上述扩大的权利也相应为数字艺术主体衍生出同等数量的艺术义务.相对于原子艺术秩序中的那些义务,数字艺术义务的履行即尊重各项数字艺术权利的行使、避免生产传播有损于社会大众身心健康的艺术作品在当下人工智能社会遭遇到了巨大的挑战.     

Examination of heterogeneous crossing sequences between toner and rollerball pen strokes by digital microscopy and 3-D laser profilometry

The determination of line crossing sequences between rollerball pens and laser printers presents difficulties that may not be overcome using traditional techniques. This research aimed to study the potential of digital microscopy and 3-D laser profilometry to determine line crossing sequences between a toner and an aqueous ink line. Different paper types, rollerball pens, and writing pressure were tested. Correct opinions of the sequence were given for all case scenarios, using both techniques. When the toner was printed before the ink, a light reflection was observed in all crossing specimens, while this was never observed in the other sequence types. The 3-D laser profilometry, more time-consuming, presented the main advantage of providing quantitative results. The findings confirm the potential of the 3-D laser profilometry and demonstrate the efficiency of digital microscopy as a new technique for determining the sequence of line crossings involving rollerball pen ink and toner.     

Android智能手机的取证

作为一种新兴的智能手机,Android手机发展势头极为迅猛,并越来越多的受到人们的关注。通过对Android智能手机的取证研究,在介绍了Android手机的基本工作原理后,详细描述了取证方式。通过Android SDK工具对手机内外置存储进行镜像备份,逻辑分析利用文件系统分析,查找每个应用程序自带的数据库文件来获得有价值信息,物理分析通过对内存镜像进行数据恢复以寻找删除的文件,两者互相结合。结果表明,能够从Android手机中有效寻找到潜在证据。