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A Modified Approach to Improve the Performance of Lazy Release Consistency (LRC) Model (2010)
Journal Article
Jahan, M., Kabir, S., & Asif Hossain Khan, M. (2010). A Modified Approach to Improve the Performance of Lazy Release Consistency (LRC) Model. Dhaka University Journal of Science, 58(1), 49-53

This paper proposes a method for improving the performance of existing Lazy Release Consistency (LRC) model. In LRC model, before accessing a shared page a processor must acquire a lock associated with it as well as achieve all modifications made by... Read More about A Modified Approach to Improve the Performance of Lazy Release Consistency (LRC) Model.

Single element mapping in radiography (2009)
Journal Article
Austin, J. C., Day, C. R., Kearon, A. T., & Haycock, P. W. (2009). Single element mapping in radiography. X-Ray Spectrometry, 38(6), 492-504. https://doi.org/10.1002/xrs.1204

This article reports on the application of element-specific mapping using the Bremsstrahlung of a commercial broad spectrum X-ray source to map lighter elements (zirconium to tin) and heavier elements (tantalum to bismuth) individually within an imag... Read More about Single element mapping in radiography.

Element-specific determination of X-ray transmission signatures using neural networks (2009)
Journal Article
Day, C. R., Austin, J. C., Butcher, J. B., Haycock, P. W., & Kearon, A. T. (2009). Element-specific determination of X-ray transmission signatures using neural networks. NDT and E International, 42(5), 446-451. https://doi.org/10.1016/j.ndteint.2009.02.005

In this article, we report on the application of neural networks to the problem of making an element-specific determination of unknown metal targets based on the characteristics of their transmitted X-ray signatures. Our method was applied to two gro... Read More about Element-specific determination of X-ray transmission signatures using neural networks.

Reachability problems in quaternion matrix and rotation semigroups (2008)
Journal Article
Bell. (2008). Reachability problems in quaternion matrix and rotation semigroups. Information and Computation, 1353 - 1361. https://doi.org/10.1016/j.ic.2008.06.004

We examine computational problems on quaternion matrix and rotation semigroups. It is shown that in the ultimate case of quaternion matrices, in which multiplication is still associative, most of the decision problems for matrix semigroups are undeci... Read More about Reachability problems in quaternion matrix and rotation semigroups.

Using polychromatic X-radiography to examine realistic imitation firearms (2008)
Journal Article
Austin, J., Day, C., Kearon, A., Valussi, S., & Haycock, P. (2008). Using polychromatic X-radiography to examine realistic imitation firearms. Forensic Science International, 191(1-3), 26-31. https://doi.org/10.1016/j.forsciint.2008.08.007

Sections 36–41 of the Violent Crimes Reduction Act (2006), which came into force in England and Wales on 1st October 2007, have placed significant restrictions on the sale and possession of ‘realistic imitation firearms’. This legislation attempts to... Read More about Using polychromatic X-radiography to examine realistic imitation firearms.

Characterisation of metallic powder impregnated pastes using polychromatic X-radiography (2008)
Journal Article
Austin, J. C., Day, C. R., Kearon, A. T., Valussi, S., & Haycock, P. W. (2008). Characterisation of metallic powder impregnated pastes using polychromatic X-radiography. Insight - Non-Destructive Testing & Condition Monitoring, 50(10), 550-553. https://doi.org/10.1784/insi.2008.50.10.550

This article reports on the employment of X-radiography using the bremsstrahlung of a commercial broad-spectrum X-ray source to quantify the differences and relationships between complex materials of unknown composition. The materials examined were m... Read More about Characterisation of metallic powder impregnated pastes using polychromatic X-radiography.

Some effects of the initiator on the cationic polymerization of alkenes (2008)
Journal Article
Plesch, P. H., & Austin, J. C. (2008). Some effects of the initiator on the cationic polymerization of alkenes. Journal of Polymer Science Part A: Polymer Chemistry, 46(13), 4265-4284. https://doi.org/10.1002/pola.22667

The content of this article is indicated by what could be its full title: “An Explanation of the dependence of the rate of the cationic polymerizations of alkenes and of the DP of their products, on the reaction variables, especially the size of the... Read More about Some effects of the initiator on the cationic polymerization of alkenes.

On undecidability bounds for matrix decision problems (2008)
Journal Article
Bell. (2008). On undecidability bounds for matrix decision problems. Theoretical Computer Science, 3 - 13. https://doi.org/10.1016/j.tcs.2007.10.025

In this paper we consider several reachability problems such as vector reachability, membership in matrix semigroups and reachability problems in piecewise linear maps. Since all of these questions are undecidable in general, we work on lowering the... Read More about On undecidability bounds for matrix decision problems.

Environmental adversity and uncertainty favour cooperation. (2007)
Journal Article
(2007). Environmental adversity and uncertainty favour cooperation. BMC Evolutionary Biology, 240 - ?. https://doi.org/10.1186/1471-2148-7-240

BACKGROUND: A major cornerstone of evolutionary biology theory is the explanation of the emergence of cooperation in communities of selfish individuals. There is an unexplained tendency in the plant and animal world - with examples from alpine plants... Read More about Environmental adversity and uncertainty favour cooperation..

A note on perturbation formulae for the surface-wave speed due to perturbations in material properties (2007)
Journal Article
(2007). A note on perturbation formulae for the surface-wave speed due to perturbations in material properties. Journal of Elasticity, 187 - 192. https://doi.org/10.1007/s10659-007-9130-4

In a recent paper by Tanuma and Man, a two-term asymptotic formula was derived for the speed of surface waves propagating in an anisotropic elastic half-space whose elastic moduli differ only slightly from those for a (base) isotropic elastic materia... Read More about A note on perturbation formulae for the surface-wave speed due to perturbations in material properties.

On the membership of invertible diagonal and scalar matrices (2007)
Journal Article
Bell. (2007). On the membership of invertible diagonal and scalar matrices. Theoretical Computer Science, 37 - 45. https://doi.org/10.1016/j.tcs.2006.11.011

In this paper, we consider decidability questions that are related to the membership problem in matrix semigroups. In particular, we consider the membership of a given invertible diagonal matrix in a matrix semigroup and then a scalar matrix, which h... Read More about On the membership of invertible diagonal and scalar matrices.

Neuroevolution of agents capable of reactive and deliberative behaviours in novel and dynamic environments (2007)
Journal Article
Channon. (2007). Neuroevolution of agents capable of reactive and deliberative behaviours in novel and dynamic environments. Lecture notes in computer science, 345 - 354. https://doi.org/10.1007/978-3-540-74913-4_35

Both reactive and deliberative qualities are essential for a good action selection mechanism. We present a model that embodies a hybrid of two very different neural network architectures inside an animat: one that controls their high level deliberati... Read More about Neuroevolution of agents capable of reactive and deliberative behaviours in novel and dynamic environments.

Unbounded Evolutionary Dynamics in a System of Agents that Actively Process and Transform Their Environment (2006)
Journal Article
Channon. (2006). Unbounded Evolutionary Dynamics in a System of Agents that Actively Process and Transform Their Environment. Genetic Programming and Evolvable Machines, 253 - 281. https://doi.org/10.1007/s10710-006-9009-3

Bedau et al.'s statistical classification system for long-term evolutionary dynamics provides a test for open-ended evolution. Making this test more rigorous, and passing it, are two of the most important open problems for research into systems of ag... Read More about Unbounded Evolutionary Dynamics in a System of Agents that Actively Process and Transform Their Environment.

Very low metallicity massive star models: Pre-SN evolution and primary nitrogen production (2006)
Journal Article
Hirschi, R. Very low metallicity massive star models: Pre-SN evolution and primary nitrogen production. https://doi.org/10.1051/0004-6361%3A20065356. Manuscript submitted for publication

Two series of models were computed. The first series consists of 20 solar mass models with varying initial metallicity (Z=0.02 down to Z=10^{-8}) and rotation (V_{ini}=0-600 km/s). The second one consists of models with an initial metallicity of Z=10... Read More about Very low metallicity massive star models: Pre-SN evolution and primary nitrogen production.

The N-strikes-out algorithm: A steady-state algorithm for coevolution (2006)
Journal Article
Channon. (2006). The N-strikes-out algorithm: A steady-state algorithm for coevolution

We introduce the N-strikes-out algorithm, a simple steady-state genetic algorithm for competitive coevolution. The algorithm can be summarised as follows: Run competitions between randomly chosen individuals, keep track of the number of defeats for e... Read More about The N-strikes-out algorithm: A steady-state algorithm for coevolution.

An investigation of software engineering curricula (2005)
Journal Article
(2005). An investigation of software engineering curricula. Journal of Systems and Software, 325 - 335. https://doi.org/10.1016/j.jss.2004.03.016

We adapted a survey instrument developed by Timothy Lethbridge to assess the extent to which the education delivered by four UK universities matches the requirements of the software industry. We propose a survey methodology that we believe addresses... Read More about An investigation of software engineering curricula.

Time series analysis of homoclinic nonlinear systems using a wavelet transform method (2004)
Journal Article
Austin, J. C., & Healey, J. J. (2004). Time series analysis of homoclinic nonlinear systems using a wavelet transform method. Fluid Dynamics Research, 34(6), Article 401. https://doi.org/10.1016/j.fluiddyn.2004.03.002

Homoclinic (and heteroclinic) trajectories are closed paths in phase space that connect one or more saddle points. They play an important role in the study of dynamical systems and are associated with the creation/destruction of limit cycles as a par... Read More about Time series analysis of homoclinic nonlinear systems using a wavelet transform method.

Broad spectrum element-specific X-ray imaging (2003)
Journal Article
Austin, J., Pitt, K., Haycock, P., Heywood, B., George, S., & Liddle, J. (2004). Broad spectrum element-specific X-ray imaging. NDT and E International, 37(3), 229-236. https://doi.org/10.1016/j.ndteint.2003.09.012

In this article element-specific mapping using a broad-spectrum laboratory based X-ray source is reported. Element-specific and element-exempt images of silver nitrate and di-hydrated barium chloride have been obtained from raw images collected eithe... Read More about Broad spectrum element-specific X-ray imaging.

X-ray images of defect formation in porcelain ceramics during drying (2003)
Journal Article
Potter, A., Austin, J., Ormerod, R., Haycock, P., Heywood, B., & George, S. (2003). X-ray images of defect formation in porcelain ceramics during drying. NDT and E International, 36(2), 77-83. https://doi.org/10.1016/S0963-8695%2802%2900088-9

The drying phase during the manufacture of ceramic pieces is often the point of failure owing to the formation of cracks. In this study, non-destructive microfocus X-ray imaging has been employed to study the onset of cracking in porcelain and correl... Read More about X-ray images of defect formation in porcelain ceramics during drying.