3,760 research outputs found

    Mutual impedance of nonplanar-skew sinusoidal dipoles

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    The mutual impedance of nonplanar-skew sinusoidal dipoles is presented as a summation of several exponential integrals with complex arguments. Mathematical models are developed to show the near-zone field of the sinusoidal dipole. The mutual impedance of coupled dipoles is expressed as the sum of four monopole-mobopole impedances to simplify the analysis procedure. The subroutines for solving the parameters of the dipoles are discussed

    Set and Drift: The Perils of Paperless

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    In a document released in November 1997, Defense Reform Initiative: The Busi- ness Strategy for Defense in the 21st Century, then–Secretary of Defense William Cohen stated, “To carry out our defense strategy into the 21st century with military forces able to meet the challenges of the new era, there is no alternative to achieving fundamental reform in how the Defense Department conducts business.”1 One initiative spelled out in the document concerns how Defense Department business practices are related to the management of technical data supporting defense weapons systems

    Biomarkers in graft versus host disease after allogeneic hematopoietic stem cell transplant

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    Hematopoietic stem cell transplant was developed as a curative therapy to treat onco-hematological diseases and recently indications for this therapy have expanded to include solid tumors, hemoglobinopathies and other genetic diseases and disorders. Two major types of hematopoietic stem cell transplant have been developed. Autologous transplants aim to deliver a massive dose of radiation and/or chemotherapy that is capable of ablating the hematopoietic stem cells in the bone marrow. The patient is then "rescued" from this lethal dose of treatment by an infusion of their own hematopoietic stem cells. Allogeneic transplants are designed to either functionally replace a cell class, or an enzyme or biological function absent in the patient, or to consolidate a remission in a onco-hematological disease via the graft-versus-tumor effect . Two of the largest causes of non-relapse mortality from an allogeneic hematopoietic stem cell transplant are acute and chronic graft-versus-host disease, in which immune cells derived from the graft recognize normal host tissue as foreign and attack these tissues. A host of biomarkers for acute graft versus host disease have been identified, but there is almost none for chronic graft versus host disease. Herein, a methodology to discover and validate a biomarker(s) for the most common organ system affected by chronic graft versus host disease is proposed

    The Transfer of ‘International Best Practice’ in a Brazilian MNC: A Consideration of the Convergence and Contingency Perspectives

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    This study examines the transfer of a Brazilian MNC's HR model to its subsidiaries in the UK, Canada, Switzerland and Norway. It enquires where the model was sourced from, to what extent it bore a distinct Brazilian complexion, and whether it was adapted to meet the strictures of host institutional constraints and traditions. The paper uses these questions to address an important theoretical debate in the international business literature; that is, whether the pattern of diffusion of management practices within MNCs will lead to a convergence of practices across companies and countries à la the convergence perspective, or whether this is unlikely given the variety of social and political constraints limiting such a process as suggested by the contingency perspective. We find that the MNC imposed a unitary (US-sourced) model of HR ‘best practice’ on all of its subsidiaries. Thus our empirical findings support the convergence thesis. However, we argue that these outcomes are largely explained by relations of power and economic dependence; specifically, the co-existence of dominant-country (US) practices and a dominant sectoral firm operating in economically dependent regions. Where similar circumstances are replicated one might foresee convergence within sectors across countries, but otherwise pluralism and eclecticism between sectors and across countries might be the predominant pattern along the lines envisaged in the conceptualization of “converging divergences”

    User's manual for the REEDM (Rocket Exhaust Effluent Diffusion Model) computer program

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    The REEDM computer program predicts concentrations, dosages, and depositions downwind from normal and abnormal launches of rocket vehicles at NASA's Kennedy Space Center. The atmospheric dispersion models, cloud-rise models, and other formulas used in the REEDM model are described mathematically Vehicle and source parameters, other pertinent physical properties of the rocket exhaust cloud, and meteorological layering techniques are presented as well as user's instructions for REEDM. Worked example problems are included

    Program listing for the REEDM (Rocket Exhaust Effluent Diffusion Model) computer program

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    The program listing for the REEDM Computer Program is provided. A mathematical description of the atmospheric dispersion models, cloud-rise models, and other formulas used in the REEDM model; vehicle and source parameters, other pertinent physical properties of the rocket exhaust cloud and meteorological layering techniques; user's instructions for the REEDM computer program; and worked example problems are contained in NASA CR-3646

    Some Aspects of Price Inflation in Ireland. ESRI General Research Series Paper No. 40, January 1968

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    In every country prices have risen sUbstantiaUy since the end of the war. In Ireland, as in six other European countries, consumer prices had almost doubled between 1948 and 1965--see Table 2. Is this situation of continuously rising prices in the indefinite future a fact of life which must be accepted and with which we must somehow cope, or does it mean that a sudden, and possibly catastrophic, fall in prices, like that of May 192o after World War I, is to be anticipated? History generally has a way of repeating itself and similarities are observable between our times and others, but with much longer time-lags between cause and effect in the more recent period. One might hope that, as governments nowadays have much greater control of their economies than in the past, and with the development of the social conscience, disastrous price falls can be avoided or mitigated. It is only a hope, however

    Certain Aspects of Non-Agricultural Unemployment in Ireland. General Research Series Paper No. 52, January 1970

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    In Ireland less attention is paid to the chronically high Irish unemployment rate than the gravity of the problem merits. Indeed, the reason it is more or less tacitly tolerated may be its permanent character. Also, unemployment has declined considerably over the years. At the Census of Population (CP) of April 1936 those out of work numbered 95,000; in April 1966 the number was 52,000 in a labour force which, comparatively, did not change much. As regards non-agricultural unemployment (NAU), with which we are solely concerned here, numbers declined in the 30 years from 69,000 to 42,000. Since the non-agricultural employee labour force (employed and unemployed) greatly increased, the decline in rates (i.e. out of work as percentage of employee labour force) is even more striking: from 12.2 per cent to 6.3 per cent. In the next section we shall find that the decline in rates was also very marked in the post-war II period. No doubt the fact of the decline, as well as the efforts (largely successful in the economic sense)being made to develop industry (and incidentally1 to create new jobs) has done much to assuage the public conscience. We shall see, however, that in Irish conditions, there is no necessary connection between increased employment and decline in unemployment at rates of expansion of the economy prevailing in recent years and we shall show why. As a consequence, it would appear that, to cope with the problem of high unemployment, more must be done than expanding the economy. Unemployment must be regarded as a specific social problem, almost as if it were isolated from economic development. Employment and unemployment are not one problem but two

    I Wish The Band Would Play

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