184 research outputs found

    国际化十年:一家澳大利亚零售银行的经验之谈

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    上个世纪最后四十年见证了国际银行业务和跨国银行业务显著增长的历程。推动这一发展的力量包括全球化、解除管制以及信息技术的发展。在19世纪及20世纪初发生的第一次现代意义上的跨国银行业务发展浪潮中,那些来自殖民宗主国的银行领导了时代潮流。而在最近的这次跨国银行业务扩张中,美国的金融机构占据了领导地位,这是与第一次明显不同的。因此,许多学术文章都着重研究美国的银行,包括他们的动机、经营战略以及国际化经验。此外,与银行业国际化的第一阶段相比,此次银行业的国际化扩张更大程度地突出了批发和机构银行业务,而不是零售银行业务(除了少数例外)。这一特点在近年来对跨国银行经营的学术研究中也体现得十分明显[ 有关调查,见Bain,et al (2001)。]。译者单位:厦门大学经济学院国际经济与贸易系(361005

    Observation of vertex factorisation breaking in central pp interactions

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    Central \pipi events produced in pp interactions are studied in terms of correlations between the outgoing protons. It is observed there is more ρ0\rho^{0}(770) and \fmeson production in reactions where the outgoing protons %fastest and slowest particles in the laboratory frame are on opposite sides of the beam. This effect is not attributable to the trigger or the experimental acceptance, and suggests that the vertices do not factorise

    Measurement of Light Collection of CMS PbWO4 Crystals: Comparison with the Cristal Monte Carlo Simulation Program and Further Evaluation

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    The measurement of the signal for light collection limited by the effective area of the present APD detectors has been evaluated using a photomultiplier and co60 source. Comparison of the methods and experimental results for simple geometrical situations has been made with the results of the CRISTAL Monte Carlo program which is also used to evaluate more complicated geometries including evaluation of a wavelength shifter used with an APD as a photodetector

    A study of the monitoring of radiation damage to CMS ECAL crystals, performed at X5-GIF

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    The ratio R, defined as the fractional decrease in the beam signal divided by the fractional decrease in the light monitoring signal, was measured at the GIF-X5 facility for a set of 20 ECAL barrel crystals. The dependence of R on the wavelength of the injected monitoring light and its path length in the crystals was studied. Measurements of the inter-crystal variation in R are presented for 10 pre-production crystals. Results on the dependence of signal loss on the irradiation profile are given. The use of lead filters, placed between a /sup 137/Cs source and a crystal, to reproduce different longitudinal irradiation profiles has been rested. (9 refs)

    PbWO4 Crystals Radiation Hardness Test Setup at the CERN General Irradiation Facility

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    The CMS PWO crystals irradiation facility installed at the CERN GIF ( General Irradiation Facility) is described. The measurement method and corresponding stability issues are discussed. The setup was successfully used in the PWO crystals technology optimisation R&D, results of which are illustrated

    On the Origin of the Transmission Damage in Lead Tungstate Crystals Under Irradiation

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    The origin of the transmission damage in PWO crystals is discussed. It is shown that both electron and hole centers created on the basis of structural defects in PbWO4 crystals contributed to the induced absorption of the crystals. The different aspects of the suppression of the recharge processes in PWO scintillation crystals are also discussed
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