Heat Induced Changes to Dental Resin Composites: A Reference in Forensic Investigations?*

The objective was to investigate color change and surface damage in dental resin composites exposed to high temperatures over different time intervals for comparative purposes. Samples were prepared using two resins - Z100(R) (R1) and Charisma (R2), heated at the following temperatures: 200 degrees C, 400 degrees C, 600 degrees C, 1000 degrees C, for 15, 30 and 45 min (n = 104 for each resin sample). Color (DeltaE) and brightness (DeltaL) changes were analyzed by spectrophotometry using the CIE Lab system and surface changes by Scanning Electron Microscopy (SEM). R1 showed more intense color changes after heat exposure than R2. DeltaL values were found to be the best parameter for evaluation of light and color change. A biphasic pattern after thermal exposure was detected, from dark brown to light white. SEM showed more intense alterations in R2 than in R1. These results indicate that the parameters observed in both resins are useful as a guide in forensic analyses.     

利用足迹自动识别系统对现场足迹进行图像处理

针对现场足迹的特点,在足迹自动识别系统原理的基础上,分析研究影响足迹图象质量的各种因素,并就这些不同原因,给出有效的足迹图象处理方法。结果表明,利用足迹自动识别系统对现场足迹进行处理,可以得到较高质量的足迹图象。同时,相比较其他图象处理方法,该方法简单、方便,具有较好实用性和可操作性,从而提高了现场足迹的利用率。     

中共在陕甘宁边区执政形象探析

中国共产党在陕甘宁边区掌握局部政权期间,以陕甘宁边区为“一切工作的试验区”,把合乎最广大人民群众的最大利益和为最广大人民群众所拥护作为价值坐标,推进民主政治建设,健全法制,建设廉洁政府,倡导深入实际、调查研究,领导人民发展经济、文化教育和医疗卫生事业,开展社会改造运动,塑造和展示出中共在陕甘宁边区执政的民主、廉洁、亲民、为民形象,给我们留下深刻启示。     

韩国古代诗歌的大唐影响——杜甫与李达诗中的“马”意象

韩国古代＂三唐诗人＂致力于学习中国唐诗,努力将自己的诗风与唐诗接近,在唐代诗人中,杜甫的诗成为他们学习和模仿的典范。李达与杜甫的人生遭际类似,一生处于社会底层,抑郁不得志,他的《柳摠戎紫骝马歌》是赠与知己友人柳珩的诗.表达了一个远离于主流社会的局外人的悲哀。他借鉴了杜甫诗中的＂马＂意象,但又有所不同。杜甫在自己的作品中,通过＂马＂的形象映射自己的理想和抱负,而李达的诗中只是以一个叙事者的身份状物抒情,没有达到杜甫的意象高度,李达虽然模仿了唐诗,但并没有完全悟透其中滋味。本文试图通过一个侧面,揭示韩国古代三唐诗人在接受中国唐代诗歌中的得失。     

Arts Organizations and Branding: Creating a New Joint Brand for Three Arts Organizations

This article investigates brand architecture by analyzing stakeholder perceptions of brand images when a new joint brand is created for the existing brands of three arts organizations. The theoretical framework is based on previous literature on brand architecture and brand image. The empirical study is based on a quantitative, 418-respondent survey among stakeholders of these three arts organizations. The study makes two major theoretical contributions. First, the results show that the new joint brand can be endorsed by the existing sub-brands, contrary to brand-architecture literature. Second, even in the case of a new brand, stakeholders perceive the functional attributes as important.     

Artistic enhancement in the production of photo-fit likenesses: An examination of its effectiveness in leading to suspect identification

Following a crime, witnesses are often asked by the police to construct a Photo-FIT likeness of the suspect. However, previous laboratory research has indicated that the quality of the likenesses produced can be very poor. This study investigated whether the artistic enhancement of the basic Photo-FIT by a skilled operator using a variety of techniques influenced the quality of the Photo-FIT impression produced, and in turn increased the likelihood of correct recognition from the Photo-FIT. Six professional police Photo-FIT operators produced one basic Photo-FIT which was not artistically enhanced in any way and one Photo-FIT which had been artistically enhanced. These two types of Photo-FIT were given to 105 police recruits who were required to identify which face that Photo-FIT represented from a photographic lineup of 12 ‘suspect’ photographs. Composites which had been enhanced were significantly more successful in leading to a correct identification than were basic composites which had not been enhanced. The implications of these findings for police procedure and practice in the employment of commercial composite systems are discussed.     

Mighty Morphin’ age progression: how artist,age range,and morphing influences the similarity of forensic age progressions to target individuals

When children go missing, authorities sometimes release age progressed images that are intended to approximate the person's current appearance. The current studies measured the influence of the range between the time when the child went missing and the age portrayed in the age progression on the similarity between the progressions and current images of the targets. Experiment 1 examined whole face images and Experiment 2 examined internal features only. Eight artists were recruited to produce progressions at three age ranges. Also included were averaged (morphed) images made of progressions of the same individual at a given range by different artists. Progressions across shorter ranges produced images more similar than those across longer ranges, and target comparisons yielded higher similarity ratings than foil comparisons. Although there was much variability among artists, the morphed images performed better than the average rating given to all age progressions.     

A Novel Forged Image Detection Method Using the Characteristics of Interpolation

Development of digital image‐editing programs has enabled us to be widely exposed to forged digital images surrounding us. Such forged images have been dispersed through the Internet, newspaper articles, and magazines, and in particular, the information contained in these unverified images happened to be regarded as true. As a result, the forged images provided wrong information for individuals and society, thus sometimes creating social issues. In order to solve such problems, this study was aimed to suggest the methods of identifying the veracity of forged images. In this way, it suggested re‐interpolation algorithm. Namely, the study re‐interpolated in identical arbitrary values both the interpolated and un‐interpolated regions based on the interpolation used a lot in forged, confirmed discrete fourier transform (DFT) characteristics of these two regions, and embodied a detection map for the final forged images, using the subtraction value between two regions in DFT characteristics.     

The Baku 2015 European Games as a national milestone of post-Soviet Azerbaijan

The Baku European Games, the first multi-sport mega-event held at a European level, was a major public relations undertaking by Azerbaijan. The games were framed by a trend involving large-scale sports events promoted by the Ilham Aliyev government, based on the profits of the second oil boom in the twenty-first century. The sports event served to internationally portray Azerbaijan as a rapidly developing country and in this way to increase national consciousness within the society, which was lacking a collective narrative in the post-Soviet era. Nonetheless, the downturn due to the fall of international oil prices negatively affected the impact of the sports mega-event. Moreover, the sports competition symbolized the government’s commitment to impose reasons of state and nation-building over social needs and political freedoms in Azerbaijan. This article is based on empirical fieldwork carried out in Baku in the months following the multi-sports event.     

游客形象对中国公共外交的影响分析

中国已经成为世界第一旅游消费大国,庞大的出国人群原本可以成为公共外交的使者和国家形象的代言人,遗憾的是,此起彼伏的中国游客不文明行为,不仅引起目的地居民的反感,而且降低了中国政府公共外交的可信度,使国家形象受损。在全民外交时代,应加强对游客形象问题的研究,探究其对公共外交的影响程度,充分发挥个体在公共外交中的积极作用。