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The Becker-Döring equations with exponentially size-dependent rate coefficients
Journal Article
Wattis, J. A., Bolton, C. D., & Coveney, P. V. The Becker-Döring equations with exponentially size-dependent rate coefficients. Journal of Physics A: Mathematical and General, 37,

This paper is concerned with an analysis of the Becker-Döring equations which lie at the heart of a number of descriptions of non-equilibrium phase transitions and related complex dynamical processes. The Becker-Döring theory describes growth and fra... Read More about The Becker-Döring equations with exponentially size-dependent rate coefficients.

Coagulation equations with mass loss
Journal Article
Wattis, J. A., McCartney, D. G., & Gudmundsson, T. Coagulation equations with mass loss. Journal of Engineering Mathematics, 49,

We derive and solve models for coagulation with mass loss
arising, for example, from industrial processes in which
growing inclusions are lost from the melt by colliding with the wall of the vessel. We consider a variety of loss laws and a variety... Read More about Coagulation equations with mass loss.

A Note on Collaborating Adversaries in the Srinathan-Kumar-Rangan Transmission Protocol
Book
Moss, B. (2003). A Note on Collaborating Adversaries in the Srinathan-Kumar-Rangan Transmission Protocol. University of Nottingham

We show, by means of brief demonstration, that the underlying transmission protocol in [1] cannot determine dishonest paths when adversaries collaborate. Hence, this method of tolerating mixed adversaries on an asynchronous network is flawed.

TEM studies of multilayer ohmic contacts to n-type AlGaN/GaN
Book Chapter
Fay, M. W., Moldovan, G., Harrison, I., Balmer, R., Soley, D., Hilton, K., Hughes, B., Uren, M., Martin, T., & Brown, P. D. TEM studies of multilayer ohmic contacts to n-type AlGaN/GaN. In A. Cullis, & P. Midgely (Eds.), Microscopy of semiconducting materials 2003: proceedings of the Institute of Physics conference, Cambridge University, 31 March - 3 April. IOP Publishing Ltd

Ti and Pd barrier layers between the Al/Ti diffusion couple and the Au capping layer of multilayer ohmic contacts to n-type AlGaN/GaN field effect transistors were found to be ineffective in preventing the diffusion of Au to the AlGaN following high... Read More about TEM studies of multilayer ohmic contacts to n-type AlGaN/GaN.

On The Effects of Idiotypic Interactions for Recommendation Communities in Artificial Immune Systems
Journal Article
Cayzer, S., & Aickelin, U. On The Effects of Idiotypic Interactions for Recommendation Communities in Artificial Immune Systems

It has previously been shown that a recommender based on immune system idiotypic principles can outperform one based on correlation alone. This paper reports the results of work in progress, where we undertake some investigations into the nature of t... Read More about On The Effects of Idiotypic Interactions for Recommendation Communities in Artificial Immune Systems.

A Hybrid Genetic Algorithm to Solve a Logt-Sizing and Scheduling Problem
Presentation / Conference Contribution
Staggemeier, A., Clark, A., Aickelin, U., & Smith, J. A Hybrid Genetic Algorithm to Solve a Logt-Sizing and Scheduling Problem. Presented at 16th Triennial Conference of the International Federation of Operational Research Societies (IFORS 2002)

Abstract: This paper reports a lot-sizing and scheduling problem, which minimizes inventory and backlog costs on m parallel machines with sequence-dependent set-up times over t periods. Problem solutions are represented as product subsets ordered and... Read More about A Hybrid Genetic Algorithm to Solve a Logt-Sizing and Scheduling Problem.

And now for something completely different: looking ahead to new encryption and secrecy protocols
Presentation / Conference Contribution
Ashman, H., & Gilbert, M. And now for something completely different: looking ahead to new encryption and secrecy protocols. Presented at Communications Design Conference

Transmitting sensitive data over non-secret channels has always required encryption technologies to ensure that the data arrives without exposure to eavesdroppers. The Internet has made it possible to transmit vast volumes of data more rapidly and ch... Read More about And now for something completely different: looking ahead to new encryption and secrecy protocols.

Microstructural characterisation of TiAlTiAu and TiAlPdAu ohmic contacts to AlGaN/GaN
Book Chapter
Fay, M. W., Harrison, I., Birbeck, J., Hughes, B., Uren, M., Martin, T., & Brown, P. D. Microstructural characterisation of TiAlTiAu and TiAlPdAu ohmic contacts to AlGaN/GaN. In M. Aindow, & C. Kiely (Eds.), Electron microscopy and analysis 2001: proceedings of the Institute of Physics Electron Microscopy and Analysis Group Conference, University of Dundee, 5-7 September. IOP Publishing Ltd

Ti/Al/Ti/Au and Ti/Al/Pd/Au contacts to AlGaN/GaN have been investigated to ascertain the effect of annealing temperature on the structural evolution of the contacts. Ti/Al/Ti/Au contacts become ohmic after rapid thermal annealing at 750°C or higher,... Read More about Microstructural characterisation of TiAlTiAu and TiAlPdAu ohmic contacts to AlGaN/GaN.

Leisure, family and work in the lifestyles of dual-earner families
Presentation / Conference Contribution
Such, E. Leisure, family and work in the lifestyles of dual-earner families. Presented at ESRC seminar: Impact of a Changing Labour Market on Families, Children and Mental Health: building research�user alliances

This paper examines the role of leisure in the lifestyles of dual-earner families. It explores leisure as a dimension of lifestyle that has been relatively under-researched, despite a burgeoning interest in the dual-earner family in both academic res... Read More about Leisure, family and work in the lifestyles of dual-earner families.

A New Genetic Algorithm for Set Covering Problems
Presentation / Conference Contribution
Aickelin, U. A New Genetic Algorithm for Set Covering Problems. Presented at Annual Operational Research Conference 42 (OR 42)

An indirect genetic algorithm for the non-unicost set covering problem is presented. The algorithm is a two-stage meta-heuristic, which in the past was successfully applied to similar multiple-choice optimisation problems. The two stages of the algor... Read More about A New Genetic Algorithm for Set Covering Problems.

State sum models for quantum gravity
Journal Article
Barrett, J. W. State sum models for quantum gravity

This paper reviews the construction of quantum field theory on a 4-dimensional spacetime by combinatorial methods, and discusses the recent developments in the direction of a combinatorial construction of quantum gravity.

Unlinked Embedded Graphs
Journal Article
Barrett, J. W. Unlinked Embedded Graphs

This paper is a self-contained development of an invariant of graphs embedded in three-dimensional Euclidean space using the Jones polynomial and skein theory. Some examples of the invariant are computed. An unlinked embedded graph is one that contai... Read More about Unlinked Embedded Graphs.