1,660 research outputs found

    Measurement of the multiplicity dependence of charm production in proton--proton collisions at \sqrt{s}=7 TeV with the ALICE experiment at the CERN-LHC

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    Potential of the charm quark as a probe to study the Quark-Gluon Plasma (QGP) is best harnessed when its production mechanisms are disentangled from its propagation through the QGP. Proton-proton (pp) collisions help us to study charmed hadron production mechanisms. The measurement of D-meson yields in pp collisions as a function of the multiplicity of produced particles allows one to gain some insight into the processes occurring in the collision at a microscopic level. Here, the preliminary results are presented from this measurement at \sqrt{s} = 7 TeV. The analysis strategy, the applied corrections, and the determination of the systematic uncertainties are described. The preliminary results are presented and compared with those from a similar, published, measurement of J/\psi production.Comment: 7 pages, 4 figures, Proceedings of the 13th National Symposium on Frontiers in Physics (Peshawar, Pakistan), to be submitted to the IOP, Journal of Physics, Conference Series, December 201

    The Defense-growth nexus: An application for the Israeli-Arab conflict

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    This paper revisits the defence-growth nexus for the rivals of the Israeli-Arab conflict over the last four decades. To this end, we utilize the Toda and Yamamoto (1995) causality test and the generalized variance decomposition. Contrary to the conventional wisdom and many earlier studies, we fail to detect any persistent adverse impact of military expenditures on economic growth. Our conclusions are kept intact even when we account for the possibility of endogenous structural breaks and during the post-1979 peace treaty period. Our findings imply insignificant peace dividends once the conflict is resolved and the military spending is cut to internationally acceptable standards.Growth, Middle East, Israeli-Arab conflict, Causality, Generalized Forecast Error Variance Decomposition

    The Defense-Growth Nexus: An Application for the Israeli-Arab Conflict

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    This paper revisits the defence-growth nexus for the rivals of the Israeli-Arab conflict over the last four decades. To this end, we utilize the Toda and Yamamoto (1995) causality test and the generalized variance decomposition. Contrary to the conventional wisdom and many earlier studies, we fail to detect any persistent adverse impact of military expenditures on economic growth. Our conclusions are kept intact even when we account for the possibility of endogenous structural breaks and during the post-1979 peace treaty period. Our findings imply insignificant peace dividends once the conflict is resolved and the military spending is cut to internationally acceptable standards.Growth, Middle East, Israeli-Arab conflict, Causality, Generalized Forecast Error Variance Decomposition

    Synthesis and Crystal Structure of 1-(3-fluorophenyl)-3-(3,4,5-trimethoxybenzoyl)thiourea

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    The title thiourea was synthesized by reaction of 3,4,5-trimethoxybenzoyl isothiocyante with 3-fluoroaniline. The 3,4,5-trimethoxybenzoyl isothiocyante was produced in situ by reaction of 3,4,5-trimethoxybenzoyl chloride with ammonium thiocyanate in dry acetonitrile. The structure was confirmed by the spectroscopic, elemental analysis and single crystal X-ray diffraction data. It crystallizes in the monoclinic space group P21/c with unit cell dimensions a = 13.0966(9), b = 16.6460(13), c = 7.8448(5), β = 106.721(5)°, V 1637.9(2) ų, Z = 4

    Getting Income Shares Right: A Panel Data Investigation for OECD Countries

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    In this paper we reassess the conventional measure of the capital share in income by estimating the shares of inputs in income for 23 OECD countries for the period 1960-2003 utilizing panel data techniques. A share of physical capital of over 0.50, and not one-third as commonly accepted, is found to be robust to a variety of specifications of the production function and the econometric models used. Additionally, we find that following the first oil shock the share of physical capital dropped while the share of human capital rose. Consequently, using the conventional shares may have led to overstating the severity of the post-1973 productivity slowdown.OECD, Shares of Inputs, Growth Accounting, TFP, Panel Data

    A Versus K Revisited: Evidence from Selected MENA Countries

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    This paper reconsiders the A versus K debate, namely, which factor is the leading contributor to economic growth? productivity gains (A) or factor accumulation (K). The growth accounting analysis is conducted for ten Middle Eastern and North African (MENA) countries over the period 1960-1998. The long-run share of capital in national income is estimated using cointegration (country-specific) and panel data (region-specific) methods. We find that for most of the countries in our sample the share of capital is much higher than the conventional share of 0.3-0.4. The growth accounting exercise conducted with the incorporation of human capital reveals that for the MENA region the contribution of productivity gains to economic growth is negligible and frequently even detrimental. Thus, we conclude that it is factor (both physical and human) accumulation that drives the economic performance of MENA economies.Growth Accounting, Productivity and Factor Accumulation, MENA, Middle-East, Cointegration, Panel Data

    Government Expenditures, Military Spending and Economic Growth: Causality Evidence from Egypt, Israel and Syria

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    This study uses multivariate cointegration and variance decomposition techniques to investigate the causal relationship between government expenditures and economic growth for Egypt, Israel and Syria, for the past three decades. When testing for causality within a bivariate system of total government spending and economic growth, we find bi-directional causality from government spending to economic growth with a negative long-term relationship between the two variables. However, when testing for causality within a trivariate system ¬– the share of government civilian expenditures in GDP, military burden and economic growth – we find that the military burden negatively affects economic growth for all the countries, and that civilian government expenditures cause positive economic growth in Israel and Egypt.Middle East; economic growth; government expenditure; military burden; Granger causality and error correction models

    On the Dynamics of the Israeli-Arab Arms Race

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    This paper investigates the causal relationships between the military expenditures and military burden of the four major sides of the Israeli-Arab conflict, namely, Egypt, Israel, Jordan and Syria over the period 1960-2004. We utilize both the causality test suggested by Toda and Yamamoto (1995) and the generalized forecast error variance decomposition method of Pesaran and Shin (1998). Our findings suggest weak causality that runs usually from Israel’s to Arab’s military spending. The strongest links are between Israel and Syria that are still in a state of enmity. No causality was detected between Israel’s and Jordan’s military spending.Arms race, Middle East, Israeli-Arab conflict, Causality, Generalized Forecast Error Variance Decomposition

    Methyl 2-oxo-2H-chromene-3-carboxylate

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    The title compound, C11H8O4, features an almost planar molecule (r.m.s. deviation = 0.033 Å for all non-H atoms). In the crystal, the molecules are linked via C-H...O hydrogen bonds, forming two-dimensional networks lying parallel to (1-21)
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