立体轮胎痕迹的数码照相提取

立体轮胎花纹多发现于各类案件现场,它可为寻找、认定涉案车辆提供重要线索和依据。通常对立体轮胎花纹往往采用制模法提取其特征,而照相法尽用于平面轮胎痕迹的提取。对一些立体轮胎印痕也可以采用已广泛应用于平面痕迹提取的数码摄相法进行提取,并进一步采用图像处理软件对其特征进行加强。实验表明:数码照相能反映轮胎痕迹的一部分重要特征,通过软件处理这些痕迹特征得到加强。     

中华民族凝聚力的载体与方式

中华民族凝聚力是中华民族发展进程中所体现的向心力、亲和力、组织力、互动力、谐调力、辐射力等力量的总称。它由特定的载体与方式承载、体现并不断增强。文章从其着眼点入手,探讨以人为本的载体、方式的机制和动力,兼及两岸四地互动。     

论侦查讯问人员语言自我形象的提高

讯问犯罪嫌疑人或询问证人的过程,是侦查讯问人员语言自我形象塑造的过程。侦查讯问人员语言形象、能力和语言风格,对侦查讯问或询问活动的成效具有最直接的决定作用。     

Policy integration: placing the spatial dimension in the health agenda. Evidence from Portugal

The significance of spatial policies for health and well-being is well recorded. While there has been an increasing body of literature illustrating the importance of including a territorial perspective in health decision-making processes, evidence shows that policy integration between spatial and health policies is still scarce. This paper aims to develop a deeper understanding of how this integration can be considered in conceptual terms and how it is actually embraced in practice by health decision-makers. Drawing upon the concept of territorial cohesion, the paper presents and discusses the results of a research held in Portugal aiming to understand this topic.     

Classification of firing pin impressions using HOG-SVM

Crimes, such as robbery and murder, often involve firearms. In order to assist with the investigation into the crime, firearm examiners are asked to determine whether cartridge cases found at a crime scene had been fired from a suspect's firearm. This examination is based on a comparison of the marks left on the surfaces of cartridge cases. Firing pin impressions can be one of the most commonly used of these marks. In this study, a total of nine Ruger model 10/22 semiautomatic rifles were used. Fifty cartridges were fired from each rifle. The cartridge cases were collected, and each firing pin impression was then cast and photographed using a comparison microscope. In this paper, we will describe how one may use a computer vision algorithm, the Histogram of Orientated Gradient (HOG), and a machine learning method, Support Vector Machines (SVMs), to classify images of firing pin impressions. Our method achieved a reasonably high accuracy at 93%. This can be used to associate a firearm with a cartridge case recovered from a scene. We also compared our method with other feature extraction algorithms. The comparison results showed that the HOG-SVM method had the highest performance in this classification task.     

全球化视野中的警察故事——《无国界行动》评析

近年来,警察题材电视剧开始涉及警界跨国合作题材。警察题材的电视剧有自身的特殊性,担负着意识形态的诉求。《无国界行动》以真实案例为基础,展现了中关首度联手缉毒行动,正面赞扬了我国警察高尚的奉献精神和我国在对外合作时表现出来的负责性的大国形象。但该剧有因为意识形态诉求问题而出现的观念先行的瑕疵。     

打造国际品牌提高企业经济效益--以格力电器为例

任何一家企业其生产经营的核心目标就是追求利润,因为利润是企业的血液,如果没有利润,企业就无法生存,更谈不上长足发展。经历了一场全球性的金融危机后,在全球经济举步维艰、市场需求持续不振的大环境下,海内外家电巨头纷纷陷入困境。然而在激烈的国际竞争市场上,在国内劳动力和原材料价格不断提升、难以取得核心技术突破的情况下,格力电器却做出了非常明智的抉择,即通过专业化生产、实施精品战略、走国际化道路打造国际品牌,进而提升格力产品价格、获取规模经济效益、吸引优秀人才、占领国际市场并实现供需双赢,最终使格力电器成功实现了迄今为止、全球首个依靠单一品类突破千亿元的家电品牌,从而保持了格力电器在全球家电产业中的霸主地位,让"中国制造"再次领跑在全球家电行业的最前列。     

Unpacking collective efficacy: the relationship between social cohesion and informal social control

The investigation of social mechanisms within social disorganization theory has led to the concept of collective efficacy. Collective efficacy has typically been measured as a composite of social cohesion and informal control; however, more work remains to be done with respect to the measurement of informal control and the modeling of the relationship between cohesion and control. The present study addresses this issue by using multiple operationalizations of informal social control. Results suggest that respondents rely upon their ability to call the police as a method, by which they exercise informal control over their area of residence. Moreover, the cohesion and control scales are distinct from one another, which adds to the literature showing that they are better treated as separate scales. In regression models, cohesion emerges as largely unrelated to individuals’ propensity to intervene in neighborhood problems, but enhances their perceptions of their neighbors’ likelihood of intervention. Future research should continue investigating different types of informal control and each one’s relationship with cohesion. Policy recommendations include the need for police to be prepared to respond to a variety of neighborhood problems, many of which are not directly crime related but, nonetheless, have important implications for informal crime-control efforts.     

论我国视频警务的现状与完善

随着公安视频监控建设飞速发展,以充分发挥视频图像信息效能为核心的视频警务模式已悄然兴起。当前,视频警务在视频监控系统建设、视频图像分析技术等方面存在诸多问题,但最为核心的还是体制和机制方面的问题,表现为缺少系统化的工作体制,缺少规范化的工作流程。因此,应从视频图像信息的获取、分析、应用环节构建视频警务工作体系,科学设计视频的采集报送、分析研判、运行和保障的工作机制,进一步完善视频警务工作。