779 research outputs found

    Shortest movie: Bose-Einstein correlation functions in e+e- annihilations

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    Bose-Einstein correlations of identical charged-pion pairs produced in hadronic Z decays are analyzed in terms of various parametrizations. A good description is achieved using Levy stable distributions. The source function is reconstructed with the help of the tau-model.Comment: 6 pages, 3 figures, presented at the 5th Budapest Winter School on Heavy Ion Physic

    The Prospects of Economic Interaction between CEE EU Member States and LAC countries

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    Introduction: This paper is a first draft of a larger project which attempts to systematically analyze the most important economic aspects behind relations between the CEE and the LAC countries from a multidisciplinary perspective. The attempt will explore economic history comparisons, development model concepts, external trade developments, investment relations and the possible future impacts of mega-trade agreements under negotiations from CEE-LAC perspectives. The study is organized as follows: economic historical introduction; framework of trade relations between CEE and LAC; the trade pattern and the future prospects for and drivers of intraregional economic relations after the economic crisis. Additional aspects of the relations between the two regions will be analyzed at a later stage of the research. Suggestions and recommendations for further directions of the research are highly appreciated

    The Central European Predicament. Jean Monnet/Robert Schuman Paper Series Vol. 14 No. 9, May 2014

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    From Introduction. Central and Eastern Europe (CEE) has experienced a very deep economic and political transformation since the beginning of the nineties. The early years of transition were characterized by big hopes for a quick and successful development. The international community, including the EU and the USA showed interest in the transformation of the region for a number of reasons. From a geopolitical perspective, the transformation was of tremendous importance as it confirmed the end of the cold war and the bipolar global system was replaced first by a unipolar superpower system and later gave way to a multipolar or a new bipolar system. This also signaled the weakness of the Soviet Union (and later Russia), as it was not able to prevent this transformation and was soon mired in a serious and long lasting economic and political crisis that undermined its international position. After the dissolution of the Soviet Union during the nineties Russia remained very weak, both economically and politically. The power vacuum and the transformation in Central Europe made the establishment of a new international economic and security structure possible. The new economic and political pattern that started to develop within the region was based on the liberal market economy model, with the objective of opening up markets and integrating the region into the world economy and the North Atlantic security structure

    RGEC, Sustainability Reporting, and Financial Performance: A Study in Listed Banks in IDX 2013-2017

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    This study aims to analyze Risk Profile, Good Corporate Governance, Earning, and Capital (RGEC), Sustainability Reporting (SR) and financial performance (ROE and TQ) of the listed banks in the IDX. This research implements correlation and regression analysis. Base on data samples of 12 banks in 2013-2017, the results of this study show that GCG and RGEC positively correlated to performance (ROE and TQ), but there is no correlation between SR and performance. The regression analysis shows that risk profile (LDR), GCG, and Earning / rentability (ROA) are statistically significant influence ROE but only NPL and GCG that influence TQ while SR is not significant, both to ROE and TQ. These findings support the arguments that the better the RGEC, the higher the financial performance. Subject to data limitation of SR, this study could not give empirical evidence that the better the SR, the higher the firm performance

    Efficient Synthesis of the Components of the German Cockroach Sex Pheromone I

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    We wish to report ashort (6 steps) synthesis of sex pheromones of the German cockroach, the 3,11-dimethyl-2-nonacosanone (1) and the 29-hydroxy-3,11-dimethyl-2-nonacosanone (2) using the halopolycarbon homologation as the key step. The t-butyl-2-methyl-10-iodo-undecanoate (6) synthetized from 10-undecenoic acid (3) by methylation and iodination was coupled with the Grignard reagent derived from stearyl bromide (7) and 18- -bromooctadecanyl-tetrahidro-2-pyranyl ether (8) in the presenee of dilithium tetrachlorocuprate. The natural pheromones (1 and 2) were finally obtained from the 2,10-dimethyl-octacosanon acid derivatives (11 and 12) with methyllithium in 230/0 (1) and 16010 (2) overall yields

    Efficient Synthesis of the Components of the German Cockroach Sex Pheromone I

    Get PDF
    We wish to report ashort (6 steps) synthesis of sex pheromones of the German cockroach, the 3,11-dimethyl-2-nonacosanone (1) and the 29-hydroxy-3,11-dimethyl-2-nonacosanone (2) using the halopolycarbon homologation as the key step. The t-butyl-2-methyl-10-iodo-undecanoate (6) synthetized from 10-undecenoic acid (3) by methylation and iodination was coupled with the Grignard reagent derived from stearyl bromide (7) and 18- -bromooctadecanyl-tetrahidro-2-pyranyl ether (8) in the presenee of dilithium tetrachlorocuprate. The natural pheromones (1 and 2) were finally obtained from the 2,10-dimethyl-octacosanon acid derivatives (11 and 12) with methyllithium in 230/0 (1) and 16010 (2) overall yields

    Good Corporate Governance: Firm Performance and Ownership Causality Test

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    Ownership structure, among other things, is one mechanism in corporate governance. In this context, ownership has a monitoring function. Another corporate governance mechanism is the market for corporate control. If managers did not act in the best interest of shareholder, then firm performance will decrease. The changing in ownership will follow the decreasing of firm performance. This will raise an interesting question, whether ownership caused by firm performance or vice versa. The objectives of this study to test whether monitoring function or market for corporate control that was implemented as a corporate governance mechanism in Indonesia using causality model. A panel Granger-causality test base on Ganger (1969) applied to test the causality. Samples in this study were manufacture listed companies in Indonesia Stock Exchange during 2012-2016. Ownership concentration was proxy by the Herfindahl Index of Domestic Institution ownership. The firm performance indicators in this study were efficiency, measured by Operating cost to Sales ratio, and Sales to Asset ratio and Tobin’s Q. The results of the study showed that there was a bi-causality relationship between ownership concentration and both firm performance indicators. These suggested that the monitoring function and the market for corporate control were implemented as a corporate governance mechanism in Indonesia
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