5,472 research outputs found
Deeply Virtual Compton Scattering with CLAS
The beam spin asymmetries of the reaction ep -> epg in the Bjorken regime
were measured over a wide kinematical domain using the CLAS detector and a new
lead-tungstate calorimeter. Through the interference of the Bethe-Heitler
process with Deeply Virtual Compton Scattering, those asymmetries provide
constraints for the nucleon Generalized Parton Distributions models. The
observed shapes are in agreement with twist-2 dominance predictions.Comment: Proceedings of the Workshop on Exclusive Reactions at High Momentum
Transfe
Reaction cross sections for proton scattering from stable and unstable nuclei based on a microscopic approach
Microscopic optical model potential results for reaction cross sections of
proton elastic scattering are presented. The applications cover the 10-1000 MeV
energy range and consider both stable and unstable nuclei. The study is based
on in-medium g-matrix full-folding optical model approach with the appropriate
relativistic kinematic corrections needed for the higher energy applications.
The effective interactions are based on realistic NN potentials supplemented
with a separable non-Hermitian term to allow optimum agreement with current NN
phase-shift analyzes, particularly the inelasticities above pion production
threshold. The target ground-state densities are obtained from
Hartree-Fock-Bogoliubov calculations based on the finite range, density
dependent Gogny force. The evaluated reaction cross sections for proton
scattering are compared with measurements and their systematics is analyzed. A
simple function of the total cross sections in terms of the atomic mass number
is observed at high energies. At low energies, however, discrepancies with the
available data are observed, being more pronounced in the lighter systems.Comment: 11 pages, 4 figures, submitted to Phys. Rev.
Regional Business Networks and the Multinational Retail Sector
In this paper we examine the network relationships of a set of large retail multinational enterprises (MNEs). We analyze under what conditions a flagship-network strategy (characterized by a network of five partners – the MNE; key suppliers; key partners; selected competitors; and key organisations in the non-business infrastructure) explains the internationalisation of three retailers whose geographic scope, sectoral conditions and competitive strategies differ substantially. We explore why and when retailers will adopt a flagship strategy. The three firms are Tesco and The Body Shop, two U.K.-based multinational retailers, and Moet Hennessy Louis Vuitton (LVMH), a French-based global retailer. We find evidence of strong network relationships for all three retailers, yet they embrace network strategies for different reasons. Their flagship relationships depend on each retailer’s strategic use of firm-specific-advantages (FSAs) and country-specific advantages (CSAs). We find that a flagship strategy succeeds in overcoming internal and/or environmental constraints to cross-border resource transfers, which are barriers to foreign direct investment (FDI). We provide recommendations on why and when to use a flagship-based strategy and which type of network partners to prioritize in order to succeed internationally.international retailing, flagship strategy, networks, LVMH, Tesco, The Body Shop, multinational, firm-specific advantages, regional strategy
Structure properties of even-even actinides
Structure properties of fifty five even-even actinides have been calculated
using the Gogny D1S force and the Hartree-Fock-Bogoliubov approach as well as
the configuration mixing method. Theoretical results are compared with
experimental data.Comment: 5 pages, 5 figures, proceeding of FUSION0
Substitutions, rendements d’utilisation et évaluation de la consommation d’énergie
Use efficiency of the various forms of energy are essential parameters in the determination of useful energy consumption. Some authors (Adams and Miovic) have attempted to determine these by using econometric models instead of direct, and essentially technical, measurement. The paper presents this last method and insists on the fact that a correct determination of use efficiency requires that we distinguish between fossil fuels and electricity. Some results concerning the rate of substitution between the different forms of energy are provided
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