Short circuit protection for a power distribution system

Sensing circuit detects when the output from a matrix is present and when it should be present. The circuit provides short circuit protection for a power distribution system where the selection of the driven load is accomplished by digital logic

Laser Doppler Velocimetry Workshop

The potential of laser Doppler velocimetry as a technique for use in mapping flows in the several fluid systems under development for doing research on low-gravity processes, is investigated. Laser Doppler velocimetry techniques, equipment, and applications are summarized

Statistical Analysis of Lineaments and their Relation to Fracturing, Faulting, and Halokinesis in the East Texas Basin

UT Librarie

CP Violation, an experimental perspective

I present a review of current and near-future experimental investigations of CP violation. In this review, I cover limits on particle electric dipole moments (EDMs) and CP violation studies in the K and B systems. The wealth of results from the new B factories provide impressive constraints on the CKM quark mixing matrix elements. Current and future measurements are focusing on processes dominated by loop diagrams, which probe physics at high mass scales in low-energy experiments.Comment: Invited plenary talk, DPF meeting, August 200

The Emerging Anglo-American Model: Convergence in Industrial Relations Institutions?

The Thatcher and Reagan administrations led a shift towards more market oriented regulation of economies in the Anglo-American countries, including efforts to reduce the power of organized labor. In this paper, we examine the development of employment and labor law in six Anglo-American countries (the U.S., Canada, the U.K., Ireland, Australia, and New Zealand) from the Thatcher/Reagan era to the present. At the outset of the Thatcher/Reagan era, the employment and labor law systems in these countries could be divided into three pairings: the Wagner Act model based industrial relations systems of the United States and Canada; the voluntarist system of collective bargaining and strong unions in the United Kingdom and Ireland; and the highly centralized, legalistic Award systems of Australia and New Zealand. Indeed, such a historical perspective contradicts the idea that there has been a longstanding Anglo-American model of liberal market economic ordering as has sometimes been suggested, e.g. in the varieties of capitalism literature. However, looking at the current state of the employment relations systems in these six countries, we argue that there has been growing convergence in two major areas. There has been a convergence in the area of labour rights toward private ordering of employment relations and away from the idea of work and employment being a matter subject to public ordering. By private ordering, we mean the idea that work and employment terms and conditions are primarily determined at the level of the individual organization, whether through collective bargaining between unions and employers at the organizational level, through individual negotiations, or through unilateral employer establishment of the terms and conditions of employment. The shift away from public ordering of work and employment is most dramatic in the cases of Australia and New Zealand, where the publicly established system of centralized Awards has given way to organizational level ordering of employment relations through workplace or individual level agreements. In the United Kingdom, the shift to greater private ordering is most evident in the breakdown of multi-employer collective bargaining, the weakening of industry wide standards enforced by strong unions, and the growth of nonunion representation at the enterprise level. By contrast, the much lesser degree of change in the labour rights area in North America reflects the historical situation that the Wagner Act model was from the outset a model built around the idea of private ordering. When we turn to the area of employment rights, we also see a convergence across the six Anglo-American countries toward a model in which the role of employment law is to establish a basket of minimum standards that are built into the employment relationship, which can then be improved upon by the parties. Within these general trends, we do see some variation in the degree of convergence on these models of labour and employment rights regulation across the Anglo-American countries. The strongest degree of similarity in adoption of the private ordering in labour rights and the minimum standards basket in employment rights is found in four of the countries: Canada, the United Kingdom, New Zealand and, with recent legislative changes, Australia. Each of these countries has adopted labour laws that favour organizational level economic ordering, but with reasonably substantial protections of trade union organizing and bargaining rights, and a set of minimum employment standards that includes similar sets of minimum wage, basic leave entitlements and unfair dismissal protections. The first outlier in this study is Ireland. The Irish employment relations system stands out as the only one that has continued to have a significant degree of central coordination and public ordering of employment relations. Although there is substantial coordination at the central level, at the organizational level, the Irish system resembles the other Anglo-American countries much more closely, suggesting that it has the potential to evolve in a similar direction. The other outlier is the United States. Structurally its system is similar to the other Anglo-American countries in emphasizing private ordering in labour law and the role of employment law as being to establish a minimum basket of basic standards. However, where the United States diverges from the other countries is that its system has involved a general favouring of the interests of employers over those of employees and organized labour in the implementation of the model

Is agile project management applicable to construction?

This paper briefly summarises the evolution of Agile Project Management (APM) and differentiates it from lean and agile production and ‘leagile’ construction. The significant benefits being realized through employment of APM within the information systems industry are stated. The characteristics of APM are explored, including: philosophy, organizational attitudes and practices, planning, execution and control and learning. Finally, APM is subjectively assessed as to its potential contribution to the pre-design, design and construction phases. In conclusion, it is assessed that APM offers considerable potential for application in predesign and design but that there are significant hurdles to its adoption in the actual construction phase. Should these be overcome, APM offers benefits well beyond any individual project

GP prescribing of nicotine replacement and bupropion to aid smoking cessation in England and Wales

Aims Prescribing nicotine replacement therapy (NRT) or bupropion for smoking cessation is of considerable importance to public health but little is known about prescribing practices. This paper examines general practitioners' (GPs') prescribing patterns in Britain where these drugs are reimbursed. The results have implications for other health-care systems considering introducing reimbursement.Design, participants and setting Postal survey conducted in 2002 of a random sample of 1088 GPs in England and Wales, of whom 642 (59%) responded.Measures Number of requests GPs reported having received from patients for NRT and bupropion over the past month, the number of prescriptions they reported issuing and ratings of attitudes to these medications.Findings GPs reported receiving an average of 4.3 requests for NRT and 1.9 for bupropion in the previous month. They reported issuing 3.5 prescriptions for NRT and 1.2 for bupropion. Almost all GPs accepted that NRT (95%) and bupropion (97%) should be reimbursable on National Health Service (NHS) prescription. However, a significant minority of those who received requests for prescriptions did not issue any (81% for NRT and 26% for bupropion). This was related to whether they thought these products should be available on NHS prescription for both NRT and bupropion (OR = 0.66, P < 0.05), which in turn was related to beliefs about whether smokers should have to pay for treatment themselves, the cost-effectiveness of NRT/bupropion and the low priority they would give NRT/bupropion in the drug budget. For bupropion, concern about side-effects independently predicted not prescribing [odds ratio (OR) = 1.46, P < 0.03].Conclusion In the British health-care system, which has a well-established system for technology assessment and professionally endorsed guidelines, a significant minority of GPs decline all patient requests for stop-smoking medicines

Collimated beam manifold with the number of output beams variable at a given output angle

An optical manifold is described which transforms a collimated beam, such as a laser beam, into a plurality of parallel beams having uniform intensity or having a desired intensity ratio. The manifold comprises an optical substrate coated on its rear surface with a fully reflective layer and on its front surface with a partially reflecting layer having a reflectivity gradient. An input collimated beam entering the rear surface and impinging on the front surface is reflected, multiply between the front and rear surfaces producing a plurality of parallel beams that emerge from the front surface. The intensities of the emerging beams have a relationship that depends on the reflectivity of the front surface at the points where the beams emerge. By properly selecting the reflectivity gradient, the emerging beams have uniform intensity or a desired intensity ratio

Dual laser optical system and method for studying fluid flow

A dual laser optical system and method is disclosed for visualization of phenomena in transport substances which induce refractive index gradients such as fluid flow and pressure and temperature gradients in fluids and gases. Two images representing mutually perpendicular components of refractive index gradients may be viewed simultaneously on screen. Two lasers having wave lengths in the visible range but separated by about 1000 angstroms are utilized to provide beams which are collimated into a beam containing components of the different wave lengths. The collimated beam is passed through a test volume of the transparent substance. The collimated beam is then separated into components of the different wave lengths and focused onto a pair of knife edges arranged mutually perpendicular to produce and project images onto the screen