1,879 research outputs found

    Materials processing in space: A survey of referred open literature publications

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    Over 190 reports published in the open literature by workers in the materials processing in space program are listed according to year as well as alphabetically by author. Thirty five reports submitted for publication are also cited. Supported either directly or indirectly by NASA, the research generally pertains to the influence (or lack of influence) of gravity on processes involved in crystal growth, solidification, fluid transport, containerless phenomena, and various separation techniques of interest to the biomedical community. Studies of the possibilities of using the high vacuum in the wake of orbiting vehicles for performing processes involving large heat loads and evolution of gases are also included

    A Gravity Model Approach to Estimating Prospective Trade Gains in the EU Accession and Associated Countries

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    Examining the trade prospects for the new European Union (EU) member states and the EU associated partner countries is an important issue in the context of European eastward enlargement and greater economic integration with its immediate neighbours. An out-ofsample approach to projecting trade volumes for twenty countries of interest is adopted using a gravity equation for a panel data set of bilateral export flows from twelve EU countries to twenty OECD trading partners over the 1992-2003 period. The potential trade volumes are calculated from a gravity model of new trade theory (NTT) determinants. The selected twenty countries’ prospects for further trade integration vis-à-vis the EU can be gauged by expressing the trade volume projections as a ratio of actual trade volumes for each pair of countries. The projected trade ratios for the ten new member states are found to be multiples of actual 2003 levels, indicating that trade expansion looks set to continue. Near unity values, however, are more frequent among the Mediterranean countries, indicating fewer opportunities for further trade integration with the EU.Panel data, Gravity model, Trade integration

    Human Capital and Spatial Heterogeneity in the Iberian Countries’ Regional Growth and Convergence

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    Human capital is believed to be an important conditioning factor in explaining the convergence and the speed of convergence of regional economies, although it is usually excluded from the estimated models due to a lack of consistent data. In contrast this paper, using a newly constructed series on human capital at the NUTS III level for Portugal, evaluates the role of human capital on the speed of convergence using a spatial econometric methodology, for a sample of Iberian NUTS III regions over the period 1991-2006. This is the first study to consider human capital effects at the NUTS III level and the results show convergence, both absolute and conditional, occurs mainly in the peripheral group of regions, while human capital plays a positive role only in the club of the richest regions, in contrast with an insignificant effect in the periphery. There is also evidence of important regional spillovers between the regions and evidence of the importance of EU regional policy in enhancing the convergence of the NUTS III regions.Regional growth, beta-convergence, Human Capital, Spatial Effects

    The Location of Foreign Direct Investment in the Central and Eastern European Countries: A Mixed Logit and Multilevel Data Approach

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    This paper uses the Mixed logit (ML) model and a novel three-level dataset to examine the factors explaining 1,108 foreign direct investment (FDI) location decisions into 13 Central and Eastern European countries (CEECs) over an eleven-year period between 1997 and 2007. The ML model approach is superior to other discrete choice methods in that it allows for random taste variation, unrestricted substitution patterns and correlation in unobserved factors over time. The highly significant empirical results, based on a general underlying economic model of imperfect competition, show that the responsiveness of the probabilities of choices to invest in a particular country in CEE to country-level variables differs both across sectors and across firms of different sizes and profitability. The results generalise previous studies that used only country-level data or only industry- and firm-level data to give a more accurate explanation of the firm-specific investment location decisions.Mixed logit model, random parameters, foreign direct investment, multi-level data, Halton draws

    The Lower Eastside Girls Club Girl/Hood Project

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    The Girl/Hood project is a fulldome immersive history program that will launch the planetarium in the Lower Eastside Girls Club's Center for Community in 2011. It will employ an innovative mix of archival materials and computer generated imagery, produced by the staff and girls of the Girls Club, describing the life of a girl in the Lower East Side of Manhattan in five historical eras. The first episode will be based on the archaeological study that was performed on the site in preparation for groundbreaking in April of 2010. This application will cover the design of a low cost, streamlined production workflow that will allow us and other communities to create humanities content for small and portable planetariums. Most current programs for domes are either pure astronomy demonstrations or high-budget 3D science movies that are licensed from a few large science centers. There is an opportunity to use these venues to tell human stories to small and local audiences

    The Dynamic Adjustment of a Transition Economy in the Early Stages of Transformation

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    This paper develops a model of a representative transition economy to explain the stylised facts of output declines and real exchange rate appreciation in the early stages of transformation. These facts can be explained by supply-side shocks, interest rate liberalisation or a reduction in core inflation. The policy implication is that price liberalisation in advance of financial liberalization and structural reform, including widespread privatisation of the production process, necessarily results in some temporary loss of output.Transition dynamics, overshooting, competitiveness, output decline

    The Location of Foreign Direct Investment in the Central and Eastern European Countries: A Nested Logit and Multilevel Data Approach

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    This paper generalizes the existing empirical literature on the determinants of the location of FDI, using a nested logit (NL) model and a novel three-level dataset to examine the factors explaining 1,108 foreign investment location decisions into 13 Central and Eastern European countries (CEECs) between 1997 and 2007. The NL model relaxes the multinomial logit model assumption of independence of identically distributed error terms and allows for testing if national boundaries affect the investment location choices of MNEs in the CEECs. In contrast to the existing empirical literature on the investment location choices, the Heteroskedastic Extreme Value model is used as a tool to reveal an appropriate nesting structure. The highly significant empirical results, based on a general underlying economic model of imperfect competition, show that the responsiveness of FDI in the CEECs to country-level variables differs both across sectors and across firms of different sizes and profitability. Hence the results of previous studies that used only country-level data or only industry- and firm-level data may be misleading.Nested logit model, foreign direct investment, multi-level data, heteroskedastic extreme value model

    A Meta-Analysis of the Robustness of Market Size and Labour Cost Determinants of FDI

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    This paper applies a meta-regression analysis to systematically summarise, integrate and synthesise the results of empirical studies that include market size and labour costs as determinants of FDI. Random effects panel estimation is employed separately for the sample of primary studies that use OLS estimation to analyse the effect of market size and labour costs on FDI and for the sample of primary studies that employ discrete choice models to estimate the effect of market size and labour costs on FDI. A number of factors related to model specifications, dataset characteristics and methodologies in the primary studies explain the variation in the estimated t-statistics of the effect of market size and labour costs on FDI across the studies. Most tests for publication bias indicate that the empirical literature on the effect of market size on FDI favours positive estimates while empirical literature on the effect of labour costs on FDI favours negative estimates. None of the literature, however, favours statistical significance.meta-regression analysis, foreign direct investment, market size and labour costs, publication bias
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