Systematics of Leading Particle Production

Using a QCD inspired model developed by our group for particle production, the Interacting Gluon Model (IGM), we have made a systematic analysis of all available data on leading particle spectra. These data include diffractive collisions and photoproduction at HERA. With a small number of parameters (essentially only the non-perturbative gluon-gluon cross section and the fraction of diffractive events) good agreement with data is found. We show that the difference between pion and proton leading spectra is due to their different gluon distributions. We predict a universality in the diffractive leading particle spectra in the large momentum region, which turns out to be independent of the incident energy and of the projectile type.Comment: 13 pages, Latex, 4 ps figures. To appear in Phys. Rev.

An EOQ inventory model for items with Weibull deterioration, shortages and time varying demand

[[abstract]]An inventory model is considered in which inventory is depleted not only by demand, but also by deterioration. Hence, in this paper, we derive the EOQ model for inventory of items that deteriorates at a Weibull distributed rate, assuming the demand rate with a continuous function of time. Moreover, the proposed model cannot be solved directly in a closed form, thus we used the computer software IMSL MATH/LIBRARY (1989) to find the optimal service level and the optimal replenishment cycle time. Further, we also verify that the sufficient conditions of optimality of the service level and the replenishment cycle time are satisfied under certain conditions. Finally, three numerical examples and sensitivity analyses are provided to assess the solution procedure.[[notice]]補正完畢[[journaltype]]國

Relationship marketing and university-industry linkages: A conceptual framework

Copyright © 2005 by SAGE PublicationsRelationship marketing (RM) is a prolific area of current marketing theory development. While RM principles are relevant to a range of business-to-consumer and business-to-business contexts, their theoretical foundations have principally emerged in reference to the private sector. By contrast, this exploratory study examines RM opportunities between entities operating in different sectors, namely university and industry in Australia. Using a qualitative approach, findings led to the development of a conceptual framework of university-industry relationships, integrating variables of organizational environment difference, relationship and value. Overall, this exploratory study broadens RM theory and application to relationships involving parties from fundamentally different organizational environments and suggest opportunities for the implementation of RM in this context. The article concludes with recommendations for academics and practitioners and provides several directions for future research.Carolin Plewa, Pascale Quester and Thomas Baake