37,880 research outputs found

    Man's flight in space

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    Apollo project - progress and national benefit

    International Experience With Uniform Accounting

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    A season of saints: sermons for festivals and commemorations after Pentecost

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    Reviewed Book: Rossing, John P. A season of saints: sermons for festivals and commemorations after Pentecost. Lima, Ohio: CSS Pub, 1992

    Electromagnetism in nonleptonic weak interactions

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    We construct a low-energy effective field theory that permits the complete treatment of isospin-breaking effects in nonleptonic weak interactions to next-to-leading order. To this end, we enlarge the chiral Lagrangian describing strong and Delta S=1 weak interactions by including electromagnetic terms with the photon as additional dynamical degree of freedom. The complete and minimal list of local terms at next-to-leading order is given. We perform the one-loop renormalization at the level of the generating functional and specialize to K -> pi pi decays.Comment: 17 pages, 1 figure; 2 references added, final version for publication in Nucl. Phys.

    The Fracture Energy and Some Mechanical Properties of a Polyurethane Elastomer

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    The energy required to form a unit of new surface in the fracture of a polyurethane elastomer is determined. The rate sensitivity of the material has been reduced by swelling it in toluene. This paper primarily describes the experimental work of measuring the lower limit of the fracture energy. With this value and the creep compliance as a basis, the rate dependence of fracture energy for the unswollen material has been determined. It is thus shown that the dependence of the fracture energy on the rate of crack propagation can be explained by energy dissipation around the tip of the crack. Good agreement between the theoretically and experimentally determined relationships for the rate-sensitive fracture energy is demonstrated

    Notes from the 3rd Axion Strategy Meeting

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    In this note we briefly summarize the main future targets and strategies for axion and general low energy particle physics identified in the "3rd axion strategy meeting" held during the AXIONS 2010 workshop. This summary follows a wide discussion with contributions from many of the workshop attendees.Comment: 5 pages, 1 figur

    BFKL Dynamics in Jet Evolution

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    We calculate e+eQQˉ(k)+anythinginacertainmomentum,k,regionforheavyquarkantiquark(QQˉ)production.InourchosenregionwefindthatthenumberofheavyquarkpairsproducedisdeterminedbyBFKLdynamicsandtheenergydependenceofthenumberofpairsisgivenbye^+e^- \to Q\bar{Q}(k) + anything in a certain momentum, k, region for heavy quark-antiquark (Q\bar{Q})production. In our chosen region we find that the number of heavy quark pairs produced is determined by BFKL dynamics and the energy dependence of the number of pairs is given by \alpha p-1$ the hard pomeron intercept.Comment: 14 pages, Latex, 4 figure

    Cost-benefit analysis of Australian Federal Police counter-terrorism operations at Australian airports

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    The terrorist attacks of 11 September 2001 highlighted the vulnerabilities of airports and aircraft. Further attacks in 2002, 2007 and 2009, have led to major government reforms in passenger processing and airport access. The security of Australian airports has also followed this trend, with an increased police presence. However, limited consideration has been given to the costs of these measures, compared to benefit. This Working Paper identifies the factors to be considered in such cost-benefit analyses and the authors outline their preliminary findings. The scope for further research is highlighted, particularly in relation to risk analysis and cost
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