Super-Bridges Suspended Over Carbon Nanotube Cables

In this paper the new concept of super-bridges, i.e. kilometre-long bridges suspended over carbon nanotube cables, is introduced. The analysis shows that the use of realistic (thus defective) carbon nanotube bundles as suspension cables can enlarge the current limit main span by a factor of 3.Comment: 17 pages, 6 figures, 2 table

Bridge pier scour under pressure flow conditions

The probability of pressurized flow conditions occurring in existing bridges is forecast to increase due to possible changes in extreme precipitation, storm surges and flooding predicted under climate change scenarios. The presence of a pressure flow is generally associated with scouring processes in proximity to the bridge. Scouring can also occur around bridge piers, possibly causing infrastructure failure. While there is a vast literature on bridge pier scour and pressure flow scour, only a few studies have investigated their combined effect. This study will provide a new overview of the main features of bridge pier scour under pressurized flow conditions, based on laboratory experiences. Special focus is placed on the analysis of the flow features under pressure and free surface conditions and to the temporal evolution of the scour. A comparison with existing literature data is also conducted. The results highlight the nonlinear nature of scour processes and the need to consider pressurized flow conditions during structural design, as the interaction between pressure flow and the bridge pier strongly influences scour features and leads to scour depths much greater than the sum of the individual scours created only by pressure flow or pier presence

Commitment, Learning, and Alliance Performance: A Formal Analysis Using an Agent-Based Network Formation Model

Current theoretical arguments highlight a dilemma faced by actors who either adopt a weak or strong commitment strategy for managing their alliances and partnerships. Actors who pursue a weak commitment strategy|i.e. immediately abandon current partners when a more pro table alternative is presented|are more likely to identify the most rewarding alliances. On the other hand, actors who enact a strong commitment approach are more likely to take advantage of whatever opportunities can be found in existing partnerships. Using agent-based modeling, we show that actors who adopt a moderate commitment strategy overcome this dilemma and outperform actors who adopt either weak or strong commitment approaches. We also show that avoiding this dilemma rests on experiencing a related tradeo : moderately-committed actors sacri ce short-term performance for the superior knowledge and information that allows them to eventually do better

Learning from Ninjas: young people’s films as a lens for an expanded view of literacy and language

This article examines young people’s films to provide insights about language and literacy practices. It offers a heuristic for thinking about how to approach data that is collectively produced. It tries to make sense of new ways of knowing that locate the research in the field rather than in the academic domain. The authors develop a lens for looking at films made by young people that acknowledge multiple modes and materiality within their meaning-making practices. We make an argument about the cultural politics of research, to consider how the language and literacy practices of young people are positioned. We argue for more consideration of how language and literacy appear entangled within objects and other stuff within young people’s media productions, so as to trouble disciplinary boundaries within and beyond literacy and language studies

Working Title Films and Universal : The Integration of a British Production Company into a Hollywood Studio

Working Title Films is arguably the most successful and well-known production company in Britain today. For over 30 years, it has produced a diverse range of critically and commercially successful British films including romantic comedies such as Four Weddings and a Funeral (1994) and Bridget Jones’s Diary (2001), family films like Bean (1997) and Nanny McPhee (2005) and dramas including Atonement (2007) and The Theory of Everything (2014). For the majority of its history, however, Working Title has been defined in business terms by its status as a subsidiary of one of two multinational media conglomerates, PolyGram (1992–8) and Universal (1998–present). The transition between the two began when PolyGram, and its film studio, PolyGram Filmed Entertainment (PFE), was sold to Seagram, the parent company of Universal. This article examines Working Title’s integration into Universal and the evolving media ecology which shaped the processes of development, green-lighting, production, marketing and distribution at play within and between both companies between 1998 and 2006. In these respects, Working Title’s transition between parent companies is a narrative of both continuity and change. Significantly, three key stages of gatekeeping remained common to both the PFE and Universal eras: development, green-lighting and distribution. The institutional perimeters within which these points of decision-making occurred, however, changed considerably. The article concludes by considering the impact of such structures and processes on the films which Working Title produced, particularly their various representations of Britain and ‘Britishness’

Showing Israel the red card. Activists engaged in pro-Palestinian sport-related campaigns

© 2017 Informa UK Limited, trading as Taylor & Francis Group. This article explores the motivations of activists involved in pro-Palestinian sports-based campaigns. The activists’ intention is to bring pressure to bear upon Israel until it complies with international law and supports the rights of Palestinian people under the universal principles of human rights. In response to expressions of pro-Palestinian solidarity, the Israeli state and its supporters are interpreting such activity as a ‘new’ manifestation of ‘old’ antisemitism. In seeking to assess whether such activity is informed by antisemitism, 10 semi-structured interviews were conducted with activists to examine their motives. Their political biographies were explored as were their views on the use of sport as platform to express support for the Palestinian people and/or their displeasure at Israeli participation in international sport. One central theme was the activists’ responses to the suggestion that they were motivated by antisemitism. A qualitative content analysis of the interview transcripts revealed a shared observation that the accusation of antisemitism was a ‘shameless tactic’ employed by those seeking to cover up the ongoing injustices experienced by the Palestinian people. Sport was seen as a legitimate platform for political activity, to raise public awareness and to put pressure on the Israeli state. The findings contribute to a better understanding of activist motivations, the use of sport as a political platform and the challenges facing sport and its governing bodies

Equal opportunities: Do shareable interfaces promote more group participation than single users displays?

Computers designed for single use are often appropriated suboptimally when used by small colocated groups working together. Our research investigates whether shareable interfaces–that are designed for more than one user to inter-act with–can facilitate more equitable participation in colocated group settings compared with single user displays. We present a conceptual framework that characterizes Shared Information Spaces (SISs) in terms of how they constrain and invite participation using different entry points. An experiment was conducted that compared three different SISs: a physical-digital set-up (least constrained), a multitouch tabletop (medium), and a laptop display (most constrained). Statistical analyses showed there to be little difference in participation levels between the three conditions other than a predictable lack of equity of control over the interface in the laptop condition. However, detailed qualitative analyses revealed more equitable participation took place in the physical-digital condition in terms of verbal utterances over time. Those who spoke the least contributed most to the physical design task. The findings are discussed in relation to the conceptual framework and, more generally, in terms of how to select, design, and combine different display technologies to support collaborative activities

In Vivo Fluorescence Imaging of Bacteriogenic Cyanide in the Lungs of Live Mice Infected with Cystic Fibrosis Pathogens

10.1371/journal.pone.0021387PLoS ONE67