8,101 research outputs found

    The internet as a relationship marketing tool - some evidence from Irish companies

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    This article explores the strategies underlying the use of the internet as a marketing tool by Irish businesses. Three different approaches to internet Marketing are described: the ornamental, the informational and the relational. It is shown that, theoretically, the internet offers a unique opportunity for marketers to build up and maintain relationships with their clients. However, data collected through a mail survey and a content analysis of web sites reveal that currently the most frequent use of the internet by Irish companies still follows an ornamental or, at most, informational pattern. The authors discuss whether this discrepancy between internet potential and practice is due to the social basis of market relationships or whether it can be seen as evidence that the adaptation of a new marketing tool follows an incremental pattern

    Flash of photons from the early stage of heavy-ion collisions

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    The dynamics of partonic cascades may be an important aspect for particle production in relativistic collisions of nuclei at CERN SPS and BNL RHIC energies. Within the Parton-Cascade Model, we estimate the production of single photons from such cascades due to scattering of quarks and gluons q g -> q gamma, quark-antiquark annihilation q qbar -> g gamma, or gamma gamma, and from electromagnetic brems-strahlung of quarks q -> q gamma. We find that the latter QED branching process plays the dominant role for photon production, similarly as the QCD branchings q -> q g and g -> g g play a crucial role for parton multiplication. We conclude therefore that photons accompanying the parton cascade evolution during the early stage of heavy-ion collisions shed light on the formation of a partonic plasma.Comment: 4 pages including 3 postscript figure

    Criticality for branching processes in random environment

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    We study branching processes in an i.i.d. random environment, where the associated random walk is of the oscillating type. This class of processes generalizes the classical notion of criticality. The main properties of such branching processes are developed under a general assumption, known as Spitzer's condition in fluctuation theory of random walks, and some additional moment condition. We determine the exact asymptotic behavior of the survival probability and prove conditional functional limit theorems for the generation size process and the associated random walk. The results rely on a stimulating interplay between branching process theory and fluctuation theory of random walks.Comment: Published at http://dx.doi.org/10.1214/009117904000000928 in the Annals of Probability (http://www.imstat.org/aop/) by the Institute of Mathematical Statistics (http://www.imstat.org

    Louis G. Geiger to Professor Silver, 3 November 1960

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    Jean-Yves Mollier - L'argent et les lettres. Histoire du capitalisme d'édition, 1880-1920

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    Analysis of reaction dynamics at RHIC in a combined parton/hadron transport approach

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    We introduce a transport approach which combines partonic and hadronic degrees of freedom on an equal footing and discuss the resulting reaction dynamics. The initial parton dynamics is modeled in the framework of the parton cascade model, hadronization is performed via a cluster hadronization model and configuration space coalescence, and the hadronic phase is described by a microscopic hadronic transport approach. The resulting reaction dynamics indicates a strong influence of hadronic rescattering on the space-time pattern of hadronic freeze-out and on the shape of transverse mass spectra. Freeze-out times and transverse radii increase by factors of 2 - 3 depending on the hadron species.Comment: 10 pages, 4 eps figures include
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