This paper summarises the cell design issues for microcellular networks and explains how conventional large cell network design techniques may not be suitable for designing a ubiquitous microcellular network. A general interference model developed for arbitrary microcellular networks, using a parameter denoted the ‘interference to noise ratio’ or INR, is used to determine the microcell spacing ...

This paper investigates the channel allocation problem in multi-channel wireless networks with directional antennas. In particular, we propose a general analytical framework on the number of channels, in which we consider a new directional antenna model. This antenna model is more general than existing antenna models since other existing antenna models can be regarded as a special case of our m...

Rate adaptive multimedia streams offer significant system and client benefits over non-adaptive streams. These benefits come at the price of increased complexity in providing adequate network support and difficulty in understanding how rate adaptation protocols affect client perceived QoS. In this paper we define quality of service in terms of the mean rate seen by the client. We identify an in...

The structure and operation of supply networks have received considerable attention from both the business community and academic researchers in the last two decades as the pace of globalisation has accelerated. Supply networks in the international clothing industry have developed and evolved significantly over that period. This paper reviews different ways to categorise supply networks and not...

&1 André Tischer Dipl Project Assistant, bauserve GmbH, Frankfurt, Germany; Research and Teaching Assistant, University of Technology Darmstadt, Darmstadt, Germany &2 Emilia den Boer Mgr Inz, MSc, Dr Inz Assistant Professor, Wroclaw University of Technology, Institute of Environment Protection Engineering, Wroclaw, Poland &3 Ian Williams PhD, PGCE, CChem, MRSC, MCIWM, FHEA Professor, Centre for...

Author details 1 School of Public Health, Environmental Health Sciences Division and Public Health Informatics Program, HumNat Lab, University of Minnesota, Minneapolis, MN, USA. 2 Institute on the Environment, University of Minnesota, Minneapolis, MN, USA. 3 Institute for Engineering in Medicine, University of Minnesota, Minneapolis, MN, USA. 4 Academic Health Center, Mayo Memorial Building, S...

In this paper, we present a method for generating scenarios for two-stage stochastic programs, using multivariate distributions specified by their marginal distributions and the correlation matrix. The margins are described by their cumulative distribution functions and we allow each margin to be of different type. We demonstrate the method on a model from stochastic service network design and ...

We develop a general method for cost-sharing that is approximately budget balanced and group strategyproof. We use our method to design cost sharing mechanisms for two NP-complete problems: metric facility location, and single source rent-or-buy network design. Both mechanisms are competitive, group strategyproof and recover a constant fraction of the cost. For the facility location game our co...

Modern optical fibre networks are evolving from static point-to-point connections towards meshed networks with some degree of optical transparency and capability for reconfiguration. At the same time installation and operation shall be simplified, while the availability shall be kept high. In the network design this task can be accomplished by allocation of transmission margins and by control o...

The paper is based on the study sponsored by the Office of the Public sector Development Commission (OPDC). It aims to identify the critical success factors for an effective networked government. The network concept represents a new way for a public agency to work with its stakeholders. The organisation under study is Thai Health Promotion Foundation (THPF) with the focus on its road accidents ...