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。     

ISIS-chan – the meanings of the Manga girl in image warfare against the Islamic State

This article explores gendered meanings of ISIS-chan, an Internet meme in the form of a manga girl, produced and used to disrupt the messages from the Islamic State. Moreover, it investigates the performative power of ISIS-chan, and how it is used/interpreted as it circulates on the Internet. The ISIS-chan campaign is seen as an example of how the girl figure is mobilised in the political context of the War on Terror. Characterised by girlish playfulness, humour and creativity, I suggest that ISIS-chan challenges the stereotypical representations of femininity in the War on Terror, and may be perceived as a trickster.     

Accuracy of 3D Scanners in Tooth Mark Analysis

The objective of this study was to compare the accuracy of contact and laser 3D scanners in tooth mark analysis. Ten dental casts were scanned with both 3D scanners. Seven linear measurements were made from the 3D images of dental casts and biting edges generated with DentalPrint© software (University of Granada, Granada, Spain). The uncertainty value for contact 3D scanning was 0.833 for the upper dental cast and 0.660 mm for the lower cast; similar uncertainty values were found for 3D-laser scanning. Slightly higher uncertainty values were obtained for the 3D biting edges generated. The uncertainty values for single measurements ranged from 0.1 to 0.3 mm with the exception of the intercanine distance, in which higher values were obtained. Knowledge of the error rate in the 3D scanning of dental casts and biting edges is especially relevant to be applied in practical forensic cases.     

大鼠早期心肌缺血心肌肌钙蛋白T脱失的组化研究

目的研究早期心肌缺血大鼠模型上心肌肌钙蛋白T的脱失情况。方法应用免疫组化LSAB法显色观察。结果缺血15分钟,大鼠心肌肌钙蛋白T即有明显脱失,随缺血时间的延长,脱失面积呈扩大趋势。计算机图像分析显示缺血大鼠心肌肌钙蛋白T的脱失面积与正常大鼠心肌之间存在显著性差异。结论心肌肌钙蛋白T是诊断早期心肌缺血的较为敏感的指标之一。     

软警力的三重维度：警民关系、警察形象、警政管理

在警力的性质和资源发生了重大变化、对软警力的需求日益增大的时代背景下，应将如何提升软警力作为一个重要课题加以研究，重点从密切警民关系、改善警察形象、提高警政管理水平三个层面实施软警力开发战略，以解决严峻的社会治安形势与警力不足的尖锐矛盾。     

终结过程中的裂变与新生——新世纪乡土小说中的农民形象综论

新世纪乡土小说中的农民形象,可以概略地分为"流动农民"、"在乡农民"和"乡村知识分子"等三大类。由于社会活动特别是经济活动的社会空间场域不同,三类农民卷入中国农村变革大潮的现实遭际与个人体验有很大的差异,出现了前所未有的历史分化。在现代性获得过程中,农民文化人格的裂变与精神结构的新旧杂陈,比任何历史时期都要激烈而复杂,其历史命运也将迥然有别。具有历史过渡性特征的农民形象的出现,既是新世纪中国社会加速转型的历史产物,也是新世纪乡土作家以各自不同的价值取向、道德选择和艺术洞察力,捕捉历史机缘,透析农民文化人格裂变的艺术创造与乡村想象。     

党的先进性形象在舆论传播中的确立与维护

重视党的先进性形象的舆论传播作用，是加强党的先进性建设的需要。无论过去还是现在，中国共产党始终是勇于创新、为民造福、无私奉献、拒腐防变的时代尖兵。借助传媒手段建构党的先进性形象，对加强党的自身建设、实现党的奋斗目标，具有重大而深远的意义。当前，最基本的着力点是着眼加强党的先进性建设，建立党的先进性形象传播的长效机制。     

Sociocultural Variations in the Body Image Perceptions of Urban Adolescent Females

This study investigated the influences of ethnicity, socioeconomic status, and ethnic peer group composition on awareness and internalization of socially sanctioned standards of appearance using the Sociocultural Attitudes Towards Appearance Questionnaire (SATAQ). The researchers surveyed a convenience sample of 208 adolescent females at an ethnically diverse urban high school. Statistical analyses found that ethnicity influenced awareness of socially sanctioned standards of appearance but the effects of ethnicity varied by level of caregiver educational attainment. Ethnicity and caregiver educational attainment together accounted for variance in the internalization of these standards. Moreover, African American girls with ethnically heterogeneous peer groups had significantly higher awareness and internalization scores than those without mixed friends. These findings highlight the importance of multiple ecological factors in assessing risk for disturbed body image and eating disorders. Ethnicity remains an important predictor of disturbed body image but should be treated as a dynamic, rather than a fixed risk factor.     

对微弱痕迹计算机优化处理的讨论

物证检验中的痕迹物证图像 ,由于成像系统、记录介质和传输设备的不完善 ,常会造成图像劣质化 ,微弱痕迹图像是劣质化图像的一种。应用计算机图像处理技术 ,通过像素或色级的调整 ,能有效地增强微弱痕迹的反差 ,在物证检验中 ,具有一定的实用价值     

选择与遭际：青年女性的命运悲剧——试析《奔跑的火光》中英芝形象的社会意蕴

<奔跑的火光>是女作家方方在"仰韶杯"作品评比中获奖的中篇小说,它以生动的笔触塑造了一个思想单纯、行为轻率而走向犯罪道路的农村青年妇女英芝的形象.从这一形象的最终毁灭可以看出,人生选择和人生遭际对悲剧命运具有决定性作用.