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61.
A new approach has been developed for finding optimal location of sensors in 3D multi-storeyed buildings. This approach is based on the compact probabilistic representation of acceleration response in terms of its covariance matrix. For a specified number of sensors, the optimal location has been taken to be the one for which the computed covariance matrix is closest to the exact covariance matrix of the random field constituted by the acceleration response process. It has been found that the determined sensor locations match favourably with those predicted by earlier studies for the special case of shear buildings. Further, the optimality of the determined sensor locations has also been verified by identifying the system parameters from the time series data and comparing them with those of the Finite Element Model. 相似文献
62.
PAUL CORNISH 《International affairs》2010,86(4):875-888
For as long as there has been technology (the application of science and innovation) and for as long as there has been strategy (the use of forces and resources to achieve political goals) there has been a relationship of sorts between these two preoccupations. This article inquires into the nature of the technological–strategic relationship which governments, such as that in the UK, draw upon as they confront international terrorism. To what extent has the historical technostrategic dynamic remained relevant and useful, and where has new thinking been required? The article suggests that a new and more complex understanding of the technology–strategy relationship is emerging in the context of counterterrorism. The challenge facing government is to maintain a technological edge against its terrorist adversary, without exaggerating the adversary's capability, and while ensuring that its counterterrorism strategy pursues a coherent and persuasive political goal. 相似文献
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PAUL DIXON 《Nations & Nationalism》2012,18(1):98-121
ABSTRACT. This article presents a (critical realist) constructivist critique of both consociational and civil society/transformationist approaches and their crude understandings of politics and the prospects for political change. Consociationalism's primordialist or essentialist foundation leads it towards a world‐weary, pessimistic, conservative realism about how far ‘divided societies’ may be transformed. Advocates of the civil society approach, in contrast, take an instrumentalist view of identity and are optimistic that a radical transformation can be achieved by mobilising the people against ‘hard‐line’ political representatives. The constructivist approach can provide a framework in which a more complex and nuanced understanding of identities is possible. This better equips us for understanding the prospects of bringing about desirable political change. The first part of this article is a critique of Nagle and Clancy's consociationalism. The second part provides a brief outline of a constructivist critique of both the consociational and civil society understandings of politics and their contribution to understanding the politics of managing conflict. 相似文献
64.
Waves are an important process responsible for the initiation and subsequent development of intertidal shore platforms. However, few field studies to date have described wave processes on shore platforms. A field experiment was conducted using an across‐shore array of wave gauges, including a directional sensor, on a near‐horizontal platform at Mahia Peninsula, North Island, New Zealand. Results show that the platform is very efficient in filtering wave energy at gravity wave frequencies (>0.05 Hz), with 40–80% reduction in wave height measured across the 140 m wide platform. By contrast, infragravity waves are present on the platform and increase in magnitude towards the cliff toe. Directional wave analysis indicates that wave reflection is mainly restricted to infragravity wave frequencies, demonstrating the differences in gravity and infragravity wave behaviour on the platform studied. Results indicate that, under fair weather conditions, the role of waves as an agent of cliff toe erosion is likely to be limited at present, although they are probably important for removing sediments accumulated at the cliff toe. The observed increase in infragravity wave energy towards the cliff toe implies that these long‐period waves may be important geomorphic agents on shore platforms. 相似文献
65.
PAUL SULLIVAN 《Reviews in Anthropology》2013,42(4):260-281
Anthropological, linguistic, historical, and archeological research on the Maya proceeds today amidst public contestation, for political and economic reasons, of the identity of Maya people and the nature of Maya culture. Neo-liberal multiculturalism, struggles over dwindling land and forest resources, the intensification of international tourism, and the growth of pan-Maya movements repeatedly raise the question of who and what is authentically Maya. Our scholarship, while motivated by quite different concerns and interests, unavoidably touches on similar issues in its exploration of the forms and meanings of Maya expression, belief, and ritual from ancient times to the present. 相似文献
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PAUL D. WILLIAMS 《International affairs》2005,81(1):163-174
This review article examines four recent books that explore how international peacekeepers have coped with the challenges of state-building and regionalization. Two volumes analyse the pitfalls and prospects of international attempts to turn war-shattered states into stable market democracies, while two volumes explore the problems and opportunities thrown up by attempts to forge effective working relationships between the United Nations and regional arrangements in Europe, Africa and beyond. The review concludes that although state-building is most legitimate when conducted under the auspices of the UN, the organization's almost permanent condition of overstretch and the US-led 'war on terrorism' have undermined its practical ability to lead such operations. It also suggests that the current approach to regionalization is unlikely to provide panacea for state-building or more general peacekeeping problems. 相似文献
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PAUL ROGERS 《International affairs》2006,82(4):651-665
While much of the focus in the Trident replacement debate in the UK is on Britain's long-term role as a nuclear power, a second decision is imminent, concerning the acquisition of two large aircraft carriers. In combination, these two projects will do much to determine the UK defence posture for several decades to come and are therefore best analysed together. The decisions are particularly significant when viewed in relation to the post 9/II US defence posture, especially in what is now being termed the 'long war'. The new aircraft carriers will make it possible for the UK military to work closely with the United States in future expeditionary warfare, with all the potential political controversies that might result. 相似文献
70.