A Low Complexity Video Watermarking in H.264 Compressed Domain

In this paper, a new blind and readable H.264 compressed domain watermarking scheme is proposed in which the embedding/extracting is performed using the syntactic elements of the compressed bit stream. As a result, it is not necessary to fully decode a compressed video stream both in the embedding and extracting processes. The method also presents an inexpensive spatiotemporal analysis that selects the appropriate submacroblocks for embedding, increasing watermark robustness while reducing its impact on visual quality. Meanwhile, the proposed method prevents bit-rate increase and restricts it within an acceptable limit by selecting appropriate quantized residuals for watermark insertion. Regarding watermarking demands such as imperceptibility, bit-rate control, and appropriate level of security, a priority matrix is defined which can be adjusted based on the application requirements. The resulted flexibility expands the usability of the proposed method.

(Pro)Motion Pictures: Len Lye in the Thirties

This article examines Len Lye’s film-making in the 1930s within a broader visual arts context, seeking to clarify the nature and extent of his involvement in British documentary film culture at this time. In particular, it demonstrates how Lye's method of fusing 'live action', found footage, and animation techniques created the possibility of a radical documentary practice that could reconcile promotional advertising and commercial art with avant-garde abstraction and kinaesthetic experimentation. In particular, the article focusses on Lye's N. or N.W. (1937, 35mm, b&w, 10 mns), arguing that his work from this period should be regarded as central - and not marginal - to any serious reassessment of Britain's “Documentary Movement” of the inter-war era, and its relations to any history of the cinema and visual culture.

Cold War Along the Emerald Curtain: Rural Boundaries in a Contested Border Zone

This paper examines how anxieties about ethnic identity proliferate as state borders begin to shift and open in response to accelerating possibilities of cross-border cooperation. As the border becomes more porous, social and cultural boundaries become marked in other ways, spatially re-scaled to reflect new uncertainties consequent upon border change. Using an example from the Irish land border, the paper traces how national space is re-imagined and re-placed in the everyday practices of residents in a violent border zone from which the state is ostensibly retreating. It shows that communal division is as sharply drawn as ever at a time when the ‘visibility’ of the state border itself is beginning to diminish.

What Did the Lawyers Do During the 'War' ? Neutrality, Conflcit and the Culture of Quietism

Using Northern Ireland as a case study, this paper explores how lawyers responded to the challenges of entrenched discrimination, sustained political violence and an emerging peace process. Drawing upon the literature of the sociology of lawyering, it examines whether lawyers can or should be more than ‘paid technicians’ in such circumstances. It focuses in particular upon a number of ‘critical junctures’ in the legal history of the jurisdiction and uncouples key elements of the local legal culture which contributed to an ethos of quietism. The paper argues that the version of legal professionalism that emerged in Northern Ireland was contingent and socially constructed and, with notable exceptions, obfuscated a collective failure of moral courage. It concludes that facing the truth concerning past silence is fundamental to a properly embedded rule of law and a more grounded notion of what it means to be a lawyer in a conflict.

Representing War as Punishment in the War on Terror

This paper shows how the notion of punishment has been invoked by former US President George W. Bush, and ex UK Prime Minister Tony Blair to represent war. It is suggested that in this context, the notion of punishment serves different objectives: legitimizing violence, suggesting the sovereign role taken by the US and highlighting the emergence of new sensibilities. Building on previous literature in criminology and international relations it examines points of contact between two previously distinct security mechanisms - war and punishment- and suggests possible effects of this discursive blurring. It highlights not only the need for criminologists to engage with international relations literature but also the need to evaluate closely the different nature of the international context.

War, peace and suicide: The case of Northern Ireland

Durkheim’s idea that war reduces suicide through greater social and political integration has been used to explain suicide trends during the Northern Ireland conflict and in the period of peace. The applicability of Durkheim is critically evaluated through a case study of suicide trends by age, gender and cause of death over a forty year period. The key finding is that the cohort of children and young people who grew up in the worst years of violence during the 1970s, have the highest and most rapidly increasing suicide rates, and account for the steep upward trend in suicide following the 1998 Agreement. Contrary to Durkheim, the recent rise in suicide involves a complex of social and psychological factors. These include the growth in social isolation, poor mental health arising from the experience of conflict, and the greater political stability of the past decade. The transition to peace means that externalised aggression is no longer socially approved. It becomes internalised instead.

Adolescent men's attitudes and decision-making in relation to an unplanned pregnancy. Responses to an interactive video drama

This study confronts a gender bias in research on adolescent pregnancy by exploring adolescent men’s decisions relating to a hypothetical unplanned pregnancy. A cross-sectional survey was conducted with adolescent men (N = 360) aged between 14 and 18 years attending schools in the Republic of Ireland. The study, the first of its kind in Europe, extends the small body of evidence on adolescent men and pregnancy decision-making by developing and examining reactions to an interactive video drama used in a comparable study in Australia. In addition, we tested a more comprehensive range of sociological and psychological determinants of adolescent men’s decisions regarding an unplanned pregnancy. Results showed that adolescent men were more likely to choose to keep the baby in preference to abortion or adoption. Adolescent men’s choice to continue the pregnancy (keep or adopt) in preference to abortion was significantly associated with anticipated feelings of regret in relation to abortion, perceived positive attitudes of own mother to keeping the baby and a feeling that a part of them might want a baby. Religiosity was also shown to underlie adolescent men’s views on the perceived consequences of an abortion in their lives.