A comparison of plastic cable ties based on physical,chemical and stable isotopic measurements

Plastic cable ties can be utilised in a range of serious criminal activities and a comparison of cable ties, or fragments, may form part of the physical evidence presented to a Court of law. This research assessed the potential value of evidence based on the analysis of plastic cable ties. Twenty packets of black coloured plastic cable ties (nominally 200 mm × 4.8 mm) were purchased in pack sizes ranging from 25 to 100 individual cable ties (Brisbane, Australia, March 2015). Representative samples from each packet were visually examined, compared and tested to determine their physical dimensions, chemical compositions and stable isotopic compositions (δ²H, δ¹³C and δ¹⁵N).All of the individual cable ties from a given packet were found to be indistinguishable with respect to appearance, physical, chemical and isotopic measurements (within-batch variability). Individual cable ties were also found to be isotopically homogeneous with respect to hydrogen, carbon and nitrogen. All of the cable ties analysed were found to have very similar chemical compositions and to be manufactured predominantly from nylon 6,6. The elemental compositions of composite samples, prepared from each packet, were found to be highly variable and, as such, were of very limited value.Cable ties from ten of the twenty packets were uniquely characterised by physical appearance (between-batch variability). Physical measurements such as the width, thickness and tooth-count of the grip section did not provide additional discrimination. Cable ties from nineteen of the twenty packets were uniquely characterised by isotopic composition, based on δ²H and δ¹⁵N measurements. Samples from two packets of Crescent brand cable ties were found to be indistinguishable with respect to all of the tests applied in this study. These two packets were inadvertently purchased from the same retailer and had the same barcode and batch number. It was considered a reasonable assumption that these two packets originated from the same manufacturing batch.The authors reason that a likelihood ratio (that might be presented to a Court of law) can be derived from this type of discrete data based on a calculation of the possible combinations of distinguishable objects (unordered sampling with replacement) in a convenience sample collected from the background population. In this example, a database of 19 distinguishable objects can yield a likelihood ratio as high as 210, with a verbal equivalent of “moderately strong support” for a proposition that two cable ties have the same isotopic composition because they originate from the same batch rather than by random chance.     

Media Exposure, Current and Future Body Ideals, and Disordered Eating Among Preadolescent Girls: A Longitudinal Panel Study

Internalization of the thin body ideal is considered by many to account for the relationship between media exposure and disordered eating among girls and young women, but almost all supporting research has employed adolescent and adult samples. Using longitudinal panel survey data collected from 257 preadolescent girls at 2 points in time 1 year apart, we tested relationships between self-reported television and magazine exposure at wave 1 and current (prepubescent) and future (postpubescent) body ideals and disordered eating at wave 2. Controlling age, race, perceived body size, and body ideals and disordered eating measured at wave 1, television viewing at wave 1 predicted increased disordered eating and a thinner postpubescent body ideal at wave 2. In contrast, none of the media variables predicted a thinner prepubescent body ideal at wave 2. These findings suggest that the thin-ideal internalization construct needs refinement to enhance its developmental sensitivity.

The Great Game and the evolving nature of political talk shows on Russian television

ABSTRACT

Much has been written about the specific way in which the Russian government under President Vladimir V. Putin uses television to propagate pro-government views on domestic and international politics by influencing what is aired. This paper examines the first season of The Great Game (Bol’shaya Igra in Russian), a television talk show that appears on Russia’s national television network Channel One, as an example of the government’s effort to shape public opinion. A content analysis suggests The Great Game differs from the typical Russian talk show genre in that it delivers political messages without much entertainment, providing cerebral discussions of issues that nonetheless back up all nine of the core “neoconservative” concepts underlying recent Russian political strategy. This suggests that the Russian government and television executives innovate to determine how best to use television to win over skeptical citizens to the Kremlin’s point of view.     

How Japanese wallflowers turned into celebrities: self-mockery and self-revelation of the female comedy duo Harisenbon

ABSTRACT

This study examines the Japanese female comedy duo Harisenbon. By examining their approach to comedy and their reception by Japanese media and society, it discusses how they use their “ugly”, “fat” and “skinny” personas to expose Japanese social pressures upon women. It considers how both comedians present a self-image that apparently matches their stage characters, and how their interactions with mainstream media endorses the very social norms they ridicule, without directly challenging or satirising them, even if this leaves space for destabilising the assumptions on which they are based. It observes that one half of the duo, who is more successful than the other, might be due to her willingness to mock her own appearance more savagely.     

Indian is the New Black? The Rise of Indian-Americans on American Television

This article argues that the growing use of Indian-American characters in American television programming results from a combination of societal shifts in the United States as well as changes in the international system—specifically, the increasing ethnic diversity in America as well as the rise of non-western nations as important players in a globalized world that has led to a growing global market for American television programs. Further, the portrayal of such characters also ranges from what the British Broadcasting Corporation calls ‘color-blind casting’ (where the race and ethnicity of characters do not determine or limit the roles they portray) to more stereotypical renderings of the Indian-American community. It concludes by suggesting that changes in demography, as well as market forces within the United States and abroad, will probably lead not only to more Indian-Americans on television but also to their portraying roles that fit into the reality of the Indian-American status and experience in American society.     

闭路电视监控器与大型公共交通系统反恐问题研究

伦敦地铁爆炸事件、西班牙马德里火车站爆炸事件等一系列袭击公共交通系统的恐怖事件,使人们越来越关注大型公共交通系统的安全和防范问题。大型公共交通系统由于流量大,无法运用航空系统的安全检查模式。在大型公共交通系统安装闭路监控器,恰恰可以在不影响这些大流量公共交通工具运行速度和效率的情况下,有效地起到安全防范的作用。英国和美国在大型公共交通系统安装闭路电视监控器的经验和模式,可以为我国大型公共交通系统的安全防范提供借鉴和参考。     

论民族影视文化对少数民族地区构建和谐文化的影响及对策

民族影视文化是少数民族地区构建和谐文化的题中要义。民族地区构建和谐文化必须充分发挥民族影视文化的优势,为构建和谐文化提供精神动力;政府必须积极引导影视文化发展,规范影视文化市场准入,营造良好气氛引导民族影视文化参与东南亚影视文化交流与互动;积极整合非政府组织的资源,推进民族影视文化走出去战略,对构建民族地区和谐文化具有重要作用。     

Television and party political dissent: intra‐party competition and the formation of news agendas

This paper re‐examines the formation of political news agendas on British television. It argues that studies of news agenda formation in political communication have been overly focused on general election campaigns and the competition between the main political parties to set the news agenda. It suggests that such studies see political parties as either homogeneous or focus exclusively on the activities of communication elites and therefore miss another important aspect of the modern political communication process. Using the British party conferences as a case study, this paper argues that in order to capture the complexities of agenda formation outside election periods, political parties have to be seen as heterogeneous organisations, consisting of various ‘claim‐makers’. News agendas in certain situations have to be understood as the product of intra‐party competition between the leadership and dissenting voices. While this competition is imperfect, favouring resource rich party elites, on certain newsworthy issues broadcasting professionals act as a counterweight to leadership resource advantages, and help shape the outcome of intra‐party competition. In conclusion the paper suggests that dissenting actors within political parties, when newsworthy, can make a substantial contribution to the formation of television news agendas despite the resistance of party leaderships. Taking account of the communicative activity of these actors and of news values will provide further insights into the formation of political news agendas between general elections. Copyright © 2001 Henry Stewart Publications     

析政治传播视角下的早间电视新闻节目

随道我国政治文化的逐渐发展,对于政治传播学的研究已越来越广泛,政治传播也已成为了我党宣传大政治方针,获取民意的一项重要手段。政治传播是与大众传播相依相伴的,不论是电视、报纸、广播、网络还是新媒体,都是政治传播的有效渠道,这里,我们主要探讨一下早间电视新闻节目的政治传播功能。