3,887 research outputs found

    Afghanistan: now you see me?: opium in Afghanistan: a reality check

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    The Royal Arms of France and its Ancillary Artefacts

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    Transitioning by Degrees: Becoming a subject librarian through advanced education

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    This paper examines on librarian’s path from generalist librarian to subject specialist, with a focus on the value of additional advanced subject degrees in relationship to this work. Following the author’s career path from MLS to Business Librarian at a public university, the conversation also examines attitudes, perceptions, and frequency of additional advanced degrees in the literature

    Packaging of RF Mems Switching Functions on Alumina Substrate

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    Recently the strong demands in wireless communication requires expanding development for the application of RF MEMS (Radio Frequency micro electro mechanical systems) sensing devices such as micro-switches, tunable capacitors because it offers lower power consumption, lower losses, higher linearity and higher Q factors compared with conventional communications components. To accelerate commercialisation of RF MEMS products, development for packaging technologies is one of the most critical issues should be solved beforehand.Comment: Submitted on behalf of TIMA Editions (http://irevues.inist.fr/tima-editions

    Accuracy of a mechanical single electron shuttle

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    Motivated by recent experiments, we calculate both the average current and the current fluctuations for a metallic island which oscillates between two symmetric electrodes. Electrons can only tunnel on or off the island when it is close to one of the electrodes. Using a Master equation we investigate the accuracy of such an electron shuttle both analytically and numerically. It is shown that optimum operation is reached when the contact time is much larger than the RC-time.Comment: RevTeX, 8 pages, 5 figure

    A Minimum Wage for Germany: What Should We Expect?

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    A key component of the coalition agreement between the CDU/CSU and SPD signed on November 27 is the adoption of a minimum wage for Germany. Under the agreement, a statutory minimum wage of EUR8.50 per hour will be introduced across the country starting in 2017. Pushed as a make-or-break issue by the SPD during the negotiations, its introductionfollows months of heated debate about its desirability and potential consequences. Although economists have yet to reach a consensus on the issue, the recent experience of the UK provides some valuable insights about what we should expect from the introduction of a minimum wage in Germany

    Magnetic-field-dependent quasiparticle energy relaxation in mesoscopic wires

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    In order to find out if magnetic impurities can mediate interactions between quasiparticles in metals, we have measured the effect of a magnetic field B on the energy distribution function f(E) of quasiparticles in two silver wires driven out-of-equilibrium by a bias voltage U. In a sample showing sharp distributions at B=0, no magnetic field effect is found, whereas in the other sample, rounded distributions at low magnetic field get sharper as B is increased, with a characteristic field proportional to U. Comparison is made with recent calculations of the effect of magnetic-impurities-mediated interactions taking into account Kondo physics.Comment: 4 pages, 3 figures, to be published in Physical Review Letter

    Réflexions d’un biologiste sur la xénogreffe

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