69,889 research outputs found

    Farm Accidents Costly Insurance Lessens the Burden

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    Reply to "Comment on Evidence for the droplet picture of spin glasses"

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    Using Monte Carlo simulations (MCS) and the Migdal-Kadanoff approximation (MKA), Marinari et al. study in their comment on our paper the link overlap between two replicas of a three-dimensional Ising spin glass in the presence of a coupling between the replicas. They claim that the results of the MCS indicate replica symmetry breaking (RSB), while those of the MKA are trivial, and that moderate size lattices display the true low temperature behavior. Here we show that these claims are incorrect, and that the results of MCS and MKA both can be explained within the droplet picture.Comment: 1 page, 1 figur

    The Leading Indicator Approach to Economic Forecasting--Retrospect and Prospect

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    For many years a system of leading, coincident, and lagging economic indicators, first developed in the 1930s by the National Bureau of Economic Research (NBER), has been widely used in the United States to appraise the state of the business cycle. Since 1961 the current monthly figures for these indicators have been published by the U.S. Department of Commerce in Business Conditions Digest. Similar systems have been developed by government or private agencies in Canada, Japan, the United Kingdom, and more recently in many other countries. A few years ago the Organization for Economic Cooperation and Development (OECD) set up a working party to develop this type of analysis and most of the member countries participated. The Center for International Business Cycle Research at Rutgers University has given guidance in this field to some fifteen countries during the past three years, in Europe, Asia, the Middle East, Africa and South America. Our purpose in this paper is to explain briefly the theory and rationale underlying this approach to economic forecasting, describe the more important statistical procedures used, and review the evidence on how the indicators have performed in practice. The tests of performance concentrate on data not used in the selection of the indicators, in the United States and nine other countries. We conclude with some suggestions for future research and development, including the application of the approach to the analysis of inflation.

    Investigation of thermionic energy conversion final report, 9 jul. - 9 sep. 1962

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    Refractory ceramic oxide for thermionic diode

    A study of the temporal changes recorded by ERTS and their geological significance

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    The temporal changes that are recorded by ERTS were evaluated for an area around Bathurst Inlet in the North West Territories. The seasons represented by the images included: early winter, spring, early summer, summer, and fall. Numerous surface characteristics (vegetation, drainage patterns, surface texture, lineament systems and topographic relief, etc.) were used to relate the change in observable features with the different seasons. It was found that the time of year when an observation is made has a strong control over the amount and type of information that can be derived by an experienced interpreter. It was concluded that a detailed study of temporal changes is an important part of any ERTS interpretation for geology
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