1,018 research outputs found

    Accelerating the Globalization of America: The Role for Information Technology

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    Information technology (IT) was key to the superior overall macroeconomic performance of the United States in the 1990s--high productivity, high growth, low inflation, and low unemployment. But IT also played a role in increasing earnings dispersion in the labor market--greatly rewarding workers with high education and skills. This US performance did not happen in a global vacuum. Globalization of US IT firms promoted deeper integration of IT throughout the US economy, which in turn promoted more extensive globalization in other sectors of the US economy and labor market. How will the increasingly globalized IT industry affect US long-term growth, intermediate macro performance, and disparities in the US labor market? What policies are needed to ensure that the United States remains first in innovation, business transformation, and education and skills, which are prerequisites for US economic leadership in the 21st century? This book traces the globalization of the IT industry, its diffusion into the US economy, and the prospects and implications of more extensive technology-enabled globalization of products and services.

    Computer modelling of terrestrial gamma-radiation fields

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    Positron lifetime measurements on neutron‐irradiated InP crystals

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    Neutron‐irradiated InP single crystals have been investigated by positron‐lifetime measurements. The samples were irradiated with thermal neutrons at different fluences yielding concentrations for Sn‐transmuted atoms between 2×1015 and 2×1018 cm−3. The lifetime spectra have been analyzed into one exponential decay component. The mean lifetimes show a monotonous increase with the irradiation dose from 246 to 282 ps. The increase in the lifetime has been associated to a defect containing an Indium vacancy. Thermal annealing at 550 °C reduces the lifetime until values closed to those obtained for the as‐grown and conventionally doped InP [email protected] ; [email protected]

    Two-bidder all-pay auctions with interdependent valuations, including the highly competitive case

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    We analyze symmetric, two-bidder all-pay auctions with interdependent valuations and discrete type spaces. Relaxing previous restrictions on the distribution of types and the valuation structure, we present a construction that characterizes all symmetric equilibria. We show how the search problem this construction faces can be complex. In equilibrium, randomization can take place over disjoint intervals of bids, equilibrium supports can have a rich structure, and non-monotonicity of the equilibrium may result in a positive probability of allocative inefficiency when the value of the prize is not common. Particular attention is paid to the case in which an increase in a bidder’s posterior expected value of winning the auction is likely to be accompanied by a corresponding increase for the other bidder. Such environments are “highly competitive” in the sense that the bidder’s higher valuation also signals that the other bidder has an incentive to bid aggressively

    Is the biology of breast cancer changing? A study of hormone receptor status 1984-1986 and 1996-1997

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    Using archived tumours, those from 1984-1986 and 1996-1997 underwent immunohistochemistry for hormone receptors and grade analysis. A significant shift towards more ER-positive and low-grade disease was found; this appears to reflect screening practices, but could still influence survival
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