论侦查假设在视频图像侦查中的运用

在信息化背景下,视频图像侦查已经成为刑侦部门打击和预防犯罪的重要方法之一。在视频图像侦查中,侦查人员针对采集的视频图像信息运用侦查假设的方法进行研判分析,挖掘出侦查线索,化解侦查僵局,切实推进侦查工作的进程。因此,有必要以大量视频图像侦查成功案例为素材,系统地对侦查假设在视频图像侦查中运用的工作流程进行梳理和总结,从人、案情、通信工具、交通工具、现场痕迹物证和光影六个方面提出假设并验证假设。     

Individual Camera Identification Using Correlation of Fixed Pattern Noise in Image Sensors

Abstract:  This paper presents results of experiments related to individual video camera identification using a correlation coefficient of fixed pattern noise (FPN) in image sensors. Five color charge-coupled device (CCD) modules of the same brand were examined. Images were captured using a 12-bit monochrome video capture board and stored in a personal computer. For each module, 100 frames were captured. They were integrated to obtain FPN. The results show that a specific CCD module was distinguished among the five modules by analyzing the normalized correlation coefficient. The temporal change of the correlation coefficient during several days had only a negligible effect on identifying the modules. Furthermore, a positive relation was found between the correlation coefficient of the same modules and the number of frames that were used for image integration. Consequently, precise individual camera identification is enhanced by acquisition of as many frames as possible.     

重叠指纹分离方法比较

目的探讨各种重叠指纹分离方法的优劣。方法选取实践中常用方法对重叠指纹进行分离。结果各种方法分离重叠指纹均能达到理想效果,尤其以计算机分离方法适用范围最广、效果最佳。结论计算机重叠指纹分离方法具有较强的现实意义和广阔的应用前景。     

红外线合成图像在变造文件检验中的应用与分析

在文件检验中,黑白红外线照相是一种检验变造文件的方法,然而,在某些情况下效果欠佳。为了提高检验的准确性,不妨可以应用红外线合成图像的方法。应用Photoshop图像处理方法,根据红外线彩色照相的感光原理和色彩再现过程,对数码照相机拍摄的可见光图像和红外线图像进行适当处理,即可生成红外线合成图像。这种图像可以反映字迹对可见光和红外线的吸收与反射情况,通过判断字迹颜色有否改变来检验书写色料的异同。由此可见,利用红外线合成图像方法检验某些变造文件,可以获得黑白红外线照相无法得到的检验结果,这对提高鉴定结论的准确性具有实际应用价值。     

新形势下政府能力开发与提升探索

随着经济全球化趋势不断增强,政府在社会经济可持续发展中的地位和作用越来越重要,政府能力已成为实现经济发展和社会进步不可或缺的资源,是国家竞争力和国家持续发展能力的重要组成部分。政府能力提升既是一个重要的理论问题,又是一个重要的现实问题。我国在建设"四位一体"的社会主义现代化国家进程中,应充分重视政府能力建设,通过深化改革开放,不断提升政府经济管理能力、社会动员能力、社会服务能力与文化倡导能力。     

栅格特征在打印文件检验中的应用研究

目的通过对打印文字栅格特征进行实验研究,总结其稳定性和易引起特征变化的因素,为二次添加打印和换页变造文件检验探索新的思路。方法以500个常用汉字为主要研究对象,选用不同品牌、不同型号激光打印机,设置不同分辨率或质量模式,用同一台电脑或不同台电脑安装不同驱动程序,打印中易宋体常用字不同字号的样本。通过对打印文字笔画细节特征进行比对分析,总结打印文字栅格特征的规律特点。结果打印文字存在三类栅格特征,一是横笔段厚度特征,二是竖笔段宽度特征,三是斜笔画阶梯特征。同一台打印机一次打印的文件,相同字体字号文字的栅格特征反映相同;不同打印机或同一台打印机连接不同版本操作系统的电脑,或安装不同驱动程序,或选择不同的打印分辨率,栅格特征可能发生变化。结论栅格特征在同一次打印的文件中具有稳定性,在不同硬件和软件环境下可能发生改变,可以为换页文件和二次添加打印文件检验提供新的思路。     

新中国成立以来我国国家形象建构

国家形象因其复杂、可塑和重要,它的建构已成为现代国家非常重视的课题。国家形象建构是理解、把握新中国成立以来光辉历程不可或缺的维度,因为建构稳定和向好的大国形象是中华人民共和国建国以来重要的内在关切和诉求,我们对此有自觉的认识和努力。新中国成立以来的伟大成就,极大地改变了中国各方面的客观源像,建构了诸如社会主义大国、东方大国、全球性大国等形象,总体上日渐趋好,中国国家形象建构取得很大成绩。国家形象建构和新中国建设、发展之间存在着内在的良性互动关系。也正因为如此,在分析不足的基础上探讨进一步优化国家形象的根本路径,有助于更好地推动中国特色社会主义在新时代健康前行。     

Local government advocacy in the ‘suburban age’: an institutionalist interpretation of Melbourne’s evolving sub-metropolitan regional structures

ABSTRACT

The ‘suburban age’ has been conceptualised as the dominant global urban spatial reality for the 21^st Century, yet the politics associated with this heightened expansiveness remain underdeveloped. Of relevance is the potential for suburban discontentment across a myriad of spaces centred upon the under provision of infrastructure and employment. With urban regions often highly fragmented by local government boundaries, bottom-up inter-local government responses assume significance, including sub-regional advocacy given enduring hierarchical government dependencies. In consideration of the evolving strength of sub-regional advocacy, three institutionalist themes are introduced: credibility, coherency and coordination. Empirical insights are presented from chief executive officer (CEO)-based interviews conducted across expansive Melbourne, Australia. In Melbourne, a ‘weak mayor/strong CEO’ local government system predominates beneath a state government with extensive metropolitan responsibilities. Melbourne’s sub-metropolitan regional structures have recently looked to strengthen their external presence through actions illustrative of the identified themes, with local government CEOs playing a key role in directing their evolving character. The global ‘suburban age’ must be associated with heightened sub-regional competition across enlarged urban regions, the management of which will present a growing spatial challenge for political leaders.     

论警察公关传播机制

公共关系是一门传播的艺术,是组织运用传播手段协调与公众关系的行为。因此,建立有效的传播机制,对于推进公关建设有着非常重要的意义。文章论述了警察传播机制建设的途径,通过科学警察机制的建立,必将在深入警察公关建设的同时,更好地塑造警察组织的形象。     

Toward the Assessment of Procedural and Distributive Justice in Resolving Family Disputes

The first phase of this study focused on the development of comprehensive, conceptually integrated measures of procedural and distributive justice in the context of family decision making. In the second phase, these measures were used to examine older adolescents' justice appraisals of specific family disputes and the relation of these justice appraisals to family systems functioning along dimensions of conflict and cohesion. A Family Justice Inventory was constructed, which included two global indices (one for procedural justice and one for outcome fairness) and 13 subscales: 9 measuring specific facets of the procedural justice construct and 4 measuring specific dimensions of the distributive justice construct. Factor analysis revealed that the 13 Family Justice Inventory subscales could be reduced to 5 interpretable procedural justice factors (personal respect, status recognition, process control, correction, and trust) and 4 interpretable distributive justice factors (decision control, need, equality, and equity). Using procedural justice factor scores in regression analyses, personal respect, status recognition, correction, and trust each accounted for unique variance in family conflict and family cohesion. Using distributive justice factor scores in regression analyses, both decision control and need accounted for unique variance in family conflict and family cohesion. Using both procedural and distributive justice factor scores in regression analyses, personal respect, status recognition, and trust each accounted for unique variance in both family conflict and family cohesion. Additionally, equity also accounted for unique variance in family conflict but not family cohesion and the direction of the relationship was positive, that is, more equity in resolving specific family disputes was associated higher levels of general family conflict.