a)High Energy Accelerator Research Organization (KEK), 1-1 OHO, Tsukuba, Ibaraki 305-0801, Japan b)Tokyo Management College, 625-1 Futamata, Ichikawa, Chiba 272-0001,Japan c)Meiji-Gakuin University, Kamikurata 1518, Totsuka, Yokohama 244-0816, Japan d)Kogakuin University, Nishi-Shinjuku 1-24, Shinjuku, Tokyo 163-8677, Japan e)Seikei University, Musashino, Tokyo 180-8633, Japan f)Rikkyo Universi...

In this paper we investigate the multiplexing of heterogeneous applications and the pricing of transmission services on an ATM network. Pricing is of interest for network management to promote efficient utilization of resources. A framework is presented in which users select from a menu of services, are peak-rate policed, and are charged according to their usage and connection time. We illustra...

To understand in detail duality between heterotic string and F theory compactifications, it is important to understand the construction of holomorphic G bundles over elliptic Calabi-Yau manifolds, for various groups G. In this paper, we develop techniques to describe these bundles, and make several detailed comparisons between the heterotic string and F theory.

Simple mean field methods can be used to describe transitions between different space-time models in string theory. These include transitions between different Calabi-Yau manifolds, and more exotic things such as the Calabi-Yau/Landau-Ginzberg correspondence.

In the open telecommunication market characterised by deregulation and global competition, new technology is constantly being introduced into products, systems and networks. Network providers build networks that consist of products from multiple vendors; service providers are faced with the challenge of providing services over heterogeneous computing and network environments. Achieving interope...

As systems become increasingly connected to an increasingly diverse set of other systems and environments, architects will lose their ability to intricately plan interactions among system components, because an increasing fraction of those interactions will be with foreign and possibly unanticipated systems or components. Humans will be increasingly less competent to install, configure, optimiz...

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We discuss a class of matrix models describing cosmology with a light-like singularity, generalizing the model proposed by Craps et al. in hep-th/0506180.