Key issues in application of composites to transport aircraft

The application of composite materials to transport aircraft was identified and reviewed including the major contributing disciplines of design, manufacturing, and processing. Factors considered include: crashworthiness considerations (structural integrity, postcrash fires, and structural fusing), electrical/avionics subsystems integration, lightning, and P-static protection design; manufacturing development, evaluation, selection, and refining of tooling and curing procedures; and major joint design considerations. Development of the DC-10 rudder, DC-10 vertical stabilizer, and the DC-9 wing study project was reviewed. The Federal Aviation Administration interface and the effect on component design of compliance with Federal Aviation Regulation 25 Composite Guidelines are discussed

The Identity Project: in-depth case studies of Identity Management - UCL institutional audit. Final report

This report presents the results of an audit of identity management practices at UCL, as part of Work Package 2 of The Identity Project (http://www.identity-project.info), a study funded under the JISC e-infrastructure programme, to address the current practice and future needs of UK academic institutions in Identity Management. After an introduction to the organisational context and a description of the audit methodology, the results of fifteen interviews are presented thematicall

Parasites, pawns and partners: disability research and the role of non-disabled researchers

Important methodological questions are raised by the act of researching disablement. Disability research has attracted much methodological criticism from disabled people who argue that it has taken place within an oppressive theoretical paradigm and within an oppressive set of social relations. These issues are of heightened significance for non-disabled researchers and bear many similarities to those faced by researchers investigating barriers to the social inclusion of women, Black and ‘Third World’ peoples. Such challenges have led to the development of an ‘emancipatory’ research paradigm. Six principles of emancipatory research are identified and the authors’ own research projects are critically examined within this framework. A number of contradictions are identified and an attempt made to balance the twin requirements of political action and academic rigour

FLECS: Planning with a Flexible Commitment Strategy

There has been evidence that least-commitment planners can efficiently handle planning problems that involve difficult goal interactions. This evidence has led to the common belief that delayed-commitment is the "best" possible planning strategy. However, we recently found evidence that eager-commitment planners can handle a variety of planning problems more efficiently, in particular those with difficult operator choices. Resigned to the futility of trying to find a universally successful planning strategy, we devised a planner that can be used to study which domains and problems are best for which planning strategies. In this article we introduce this new planning algorithm, FLECS, which uses a FLExible Commitment Strategy with respect to plan-step orderings. It is able to use any strategy from delayed-commitment to eager-commitment. The combination of delayed and eager operator-ordering commitments allows FLECS to take advantage of the benefits of explicitly using a simulated execution state and reasoning about planning constraints. FLECS can vary its commitment strategy across different problems and domains, and also during the course of a single planning problem. FLECS represents a novel contribution to planning in that it explicitly provides the choice of which commitment strategy to use while planning. FLECS provides a framework to investigate the mapping from planning domains and problems to efficient planning strategies.Comment: See http://www.jair.org/ for an online appendix and other files accompanying this articl

Luttinger States at the Edge

An effective wavefunction for the edge excitations in the Fractional quantum Hall effect can be found by dimensionally reducing the bulk wavefunction. Treated this way the Laughlin $\nu=1/(2n+1)$ wavefunction yields a Luttinger model ground state. We identify the edge-electron field with a Luttinger hyper-fermion operator, and the edge electron itself with a non-backscattering Bogoliubov quasi-particle. The edge-electron propagator may be calculated directly from the effective wavefunction using the properties of a one-dimensional one-component plasma, provided a prescription is adopted which is sensitive to the extra flux attached to the electrons

Police powers and human rights in the context of terrorism

Purpose – The object of the paper is to analyse the justifications for the modification of police powers in response to terrorist threats, placing this issue in a European context. Design/methodology/approach – The paper consists of a critical examination of provisions relating to terrorism emanating from the European Union and the Council of Europe (European Convention on Human Rights (ECHR)), and the relevant English law on police powers of stop and search, arrest, and detention. Findings – Nothing in European law requires the amendments to police powers contained in English law; European law requires respect for human rights, even in dealing with terrorism; a shoot-to-kill policy is prohibited by the ECHR; and balance is an unsatisfactory method of resolving conflicts in this area. Research limitations/implications – The research was limited in its scope to certain areas of police powers, and to certain fundamental European documents. Future research should consider the issue in relation to wider areas. Originality/value – It challenges the idea of balance between liberty and security, proposing a test based on necessity instead