All Outputs (1078)

Quantifying novelty in the archaeological record (2011)
Journal Article
(2011). Quantifying novelty in the archaeological record. https://doi.org/10.4207/PA.2011.ART50

This paper describes two methods for quantification of novelty, which are not well known in archaeology. These extend the methodological toolkit available to researchers into culture and innovation. The methods are:

- Inverse frequency weighting.... Read More about Quantifying novelty in the archaeological record.

Human Facial Expression Recognition Using Region-based Motion Estimation (2010)
Journal Article
Kabir, A., & Kabir, S. (2010). Human Facial Expression Recognition Using Region-based Motion Estimation. Dhaka University Journal of Science, 58(2),

Facial expressions are the indicators to a person’s emotional state and also the principle means of human non-verbal communication. If computers would have the ability to perceive and respond to facial expressions, the human-computer interaction woul... Read More about Human Facial Expression Recognition Using Region-based Motion Estimation.

The continuous Skolem-Pisot problem (2010)
Journal Article
Bell, P. (2010). The continuous Skolem-Pisot problem. Theoretical Computer Science, 3625 - 3634. https://doi.org/10.1016/j.tcs.2010.06.005

We study decidability and complexity questions related to a continuous analogue of the Skolem-Pisot problem concerning the zeros and nonnegativity of a linear recurrent sequence. In particular, we show that the continuous version of the nonnegativity... Read More about The continuous Skolem-Pisot problem.

Unsupervised Complexity Reduction of Sensor Data for Robot Learning and Adaptation (2010)
Presentation / Conference Contribution
(2010, August). Unsupervised Complexity Reduction of Sensor Data for Robot Learning and Adaptation. Presented at Towards Autonomous Robotic Systems 2010, University of Plymouth

Pruning reservoirs with random static projections (2010)
Presentation / Conference Contribution
(2010, August). Pruning reservoirs with random static projections. Presented at Machine Learning for Signal Processing (MLSP), 2010 IEEE International Workshop on, Kittila

Electromagnetic wave scattering from the sea surface in the presence of wind wave patterns (2010)
Journal Article
(2010). Electromagnetic wave scattering from the sea surface in the presence of wind wave patterns. International Journal of Remote Sensing, 5049 - 5049 (5073). https://doi.org/10.1080/0143116031000095907

The study is concerned with electromagnetic wave (EM) scattering by a random sea surface in the presence of coherent wave patterns. The coherent patterns are understood in a broad sense as the existence of certain dynamical coupling between linear Fo... Read More about Electromagnetic wave scattering from the sea surface in the presence of wind wave patterns.

Characterization and stability of localized bulging/necking in inflated membrane tubes (2010)
Journal Article
(2010). Characterization and stability of localized bulging/necking in inflated membrane tubes. IMA Journal of Applied Mathematics, 581 - 602. https://doi.org/10.1093/imamat/hxq026

We consider localized bulging/necking in an inflated hyperelastic membrane tube with closed ends. We first show that the initiation pressure for the onset of localized bulging is simply the limiting pressure in uniform inflation when the axial force... Read More about Characterization and stability of localized bulging/necking in inflated membrane tubes.

An Innovative System for Vineyard Management in Sicily (2010)
Journal Article
Ortolani. (2010). An Innovative System for Vineyard Management in Sicily. Journal of Agricultural Engineering, https://doi.org/10.4081/jae.2010.1.13

The aim of this study was to monitor the micro-climate of the grapevine in order to detect the adversities of the spring period (especially April and May), while reducing the operating costs of the vineyard, and increasing the overall quality of grap... Read More about An Innovative System for Vineyard Management in Sicily.

Comparison method to differentiate between painted objects using polychromatic X-rays (2010)
Journal Article
Austin, J. C., Day, C. R., Kearon, A. T., Evans, D. L., & Haycock, P. W. (2010). Comparison method to differentiate between painted objects using polychromatic X-rays. Insight - Non-Destructive Testing & Condition Monitoring, 52(3), 140-143. https://doi.org/10.1784/insi.2010.52.3.140

X-radiography using the bremsstrahlung of a commercial broad spectrum X-ray source was used to quantify the differences and relationships between complex samples of unknown composition. The samples examined were painted and glazed ceramic mugs. The r... Read More about Comparison method to differentiate between painted objects using polychromatic X-rays.

Solitary waves in fluid-filled elastic tubes: existence, persistence, and the role of axial displacement (2010)
Journal Article
(2010). Solitary waves in fluid-filled elastic tubes: existence, persistence, and the role of axial displacement. IMA Journal of Applied Mathematics, 257 - 268. https://doi.org/10.1093/imamat/hxq004

We reexamine the problem of solitary wave propagation in a fluid-filled elastic membrane tube using a much simplified procedure. It is shown that there may exist four families of solitary waves with speeds close to those given by the linear dispersio... Read More about Solitary waves in fluid-filled elastic tubes: existence, persistence, and the role of axial displacement.

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, P. (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, P. (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.

Kernel Fisher Discriminant Analysis in Full Eigenspace (2008)
Book Chapter
Mandal. (2008). Kernel Fisher Discriminant Analysis in Full Eigenspace. In Proceedings of the 2007 International Conference on Image Processing, Computer Vision, & Pattern Recognition, IPCV 2007, June 25-28, 2007, Las Vegas Nevada, (235-241)

This work proposes a method which enables us to perform kernel Fisher discriminant analysis in the whole
eigenspace for face recognition. It employs the ratio of eigenvalues to decompose the entire kernel feature space into two subspaces: a reliable... Read More about Kernel Fisher Discriminant Analysis in Full Eigenspace.

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..