Skip to main content

Research Repository

Advanced Search

All Outputs (175)

Spiking neurons: Is coincidence-factor enough for comparing responses with fluctuating membrane voltage? (2008)
Presentation / Conference Contribution
Sarangdhar, M., & Kambhampati, C. Spiking neurons: Is coincidence-factor enough for comparing responses with fluctuating membrane voltage?

Similarity between two spike trains is generally estimated using a ‘coincidence factor’. This factor relies on counting coincidences of firing-times for spikes in a given time window. However, in cases where there are significant fluctuations in memb... Read More about Spiking neurons: Is coincidence-factor enough for comparing responses with fluctuating membrane voltage?.

Non-coherent modelling in compositional fault tree analysis (2008)
Presentation / Conference Contribution
Sharvia, S., & Papadopoulos, Y. I. Non-coherent modelling in compositional fault tree analysis

The inclusion of NOT gates in a fault tree creates a 'non-coherent' structure in which not only the failure of a component but also the negation of failure, i.e. the working state of the component, can contribute to the undesirable effects on a syste... Read More about Non-coherent modelling in compositional fault tree analysis.

Advanced multi-frame rate rendering techniques (2008)
Presentation / Conference Contribution
Springer, J. P., Lux, C., Reiners, D., & Froehlich, B. Advanced multi-frame rate rendering techniques. Presented at Proceedings - IEEE Virtual Reality

Multi-frame rate rendering is a parallel rendering technique that renders interactive parts of the scene on one graphics card while the rest of the scene is rendered asynchronously on a second graphics card. The resulting color and depth images of bo... Read More about Advanced multi-frame rate rendering techniques.

Improving Interaction Performance for Ray Tracing (2008)
Presentation / Conference Contribution
Kurz, D., Lux, C., Springer, J., & Fröhlich, B. Improving Interaction Performance for Ray Tracing. Presented at Eurographics 2008

We have developed an approach for improving the performance of object manipulation in ray tracing systems.We assume that users alternate between navigating the scene and manipulating objects in the scene. We divide the scene in objects currently mani... Read More about Improving Interaction Performance for Ray Tracing.

Object-Capability Security in Virtual Environments (2008)
Presentation / Conference Contribution
Scheffler, M., Springer, J. P., & Froehlich, B. (2008, March). Object-Capability Security in Virtual Environments. Presented at 2008 IEEE Virtual Reality Conference

Access control is an important aspect of shared virtual environments.Resource access may not only depend on prior authorization, but alsoon context of usage such as distance or position in the scene graphhierarchy. In virtual worlds that allow user-c... Read More about Object-Capability Security in Virtual Environments.

Steering via the image in local, distributed and collaborative settings (2007)
Presentation / Conference Contribution
Wright, H., & Wood, J. D. Steering via the image in local, distributed and collaborative settings

Computational steering is a valuable mechanism for scientific investigation in which the parameters of a running program can be altered and the results visualized immediately. In a previous paper we put forward an architecture for computational steer... Read More about Steering via the image in local, distributed and collaborative settings.

E-commerce And E-business: A new paradigm or old business in new clothes? (2006)
Presentation / Conference Contribution
Brayshaw, M., & Gordon, N. (2006, July). E-commerce And E-business: A new paradigm or old business in new clothes?. Presented at IADIS International Conference e-Society, Dublin, Ireland

This paper aims to answer the question implicit in the title, namely is e-commerce and e-business a new paradigm or old business in new clothes? We consider whether this topic is truly a new discipline worthy of study and understanding in its own rig... Read More about E-commerce And E-business: A new paradigm or old business in new clothes?.

Cyberprofiling: Offender profiling and geographic profiling of crime on the internet (2005)
Presentation / Conference Contribution
Tompsett, B., Marshall, A., & Semmens, N. Cyberprofiling: Offender profiling and geographic profiling of crime on the internet. Presented at Workshop of the 1st International Conference on Security and Privacy for Emerging Areas in Communication Networks, 2005., Athens, Greece

A project to combine criminologlcal techniques of profiling with internet abuse and computer forensic data is outlined. The multidisciplinary approach which applies the expertise of Lawyers, Criminologists, Computer Forensics and Internet Specialists... Read More about Cyberprofiling: Offender profiling and geographic profiling of crime on the internet.

Polygon smoothing nurbs curves and surfaces (2005)
Presentation / Conference Contribution
Li, Q. (2005, June). Polygon smoothing nurbs curves and surfaces. Presented at Applied Simulation and Modelling (ASM 2005), Benalmádena, Spain

In conventional spline geometric shape design, each part of a designed object always evolves the same number of con trol points. This has been a disadvantage of the spline based geometric shape design schemes as much more points than necessary may be... Read More about Polygon smoothing nurbs curves and surfaces.

A recurrent neural network for sound-source motion tracking and prediction (2005)
Presentation / Conference Contribution
Murray, J. C., Erwin, H., & Wermter, S. (2004, July). A recurrent neural network for sound-source motion tracking and prediction. Presented at Proceedings of the International Joint Conference on Neural Networks, Montreal, Que., Canada

Recurrent neural networks (RNN) have been used in many applications for both pattern detection and prediction. This paper shows the use of RNN's as a speed classifier and predictor for a robotic sound source tracking system. The system requires exten... Read More about A recurrent neural network for sound-source motion tracking and prediction.

SuperVise: Using grid tools to simplify visualization (2004)
Presentation / Conference Contribution
Osborne, J., & Wright, H. (2005, September). SuperVise: Using grid tools to simplify visualization. Presented at Parallel Processing and Applied Mathematics, 6th International Conference, PPAM 2005, Poznan, Poland

The visualization process is complicated enough for visualization experts but more so for domain specialists. Problems include managing the transfer of large datasets and choosing appropriate techniques. When we consider performing these tasks in a m... Read More about SuperVise: Using grid tools to simplify visualization.

Least squares ellipsoid specific fitting (2004)
Presentation / Conference Contribution
Li, Q., & Griffiths, J. (2004, April). Least squares ellipsoid specific fitting. Presented at Geometric Modeling and Processing, 2004., Beijing, China

In this paper, a sufficient condition for a quadric surface to be an ellipsoid has been developed and a closed-form solution for ellipsoid fitting is developed based on this constraint, which is a best fit to the given data amongst those ellipsoids w... Read More about Least squares ellipsoid specific fitting.

Implicit curve and surface design using smooth unit step functions (2004)
Presentation / Conference Contribution
Li, Q., & Phillips, R. (2004, June). Implicit curve and surface design using smooth unit step functions. Presented at ACM Symposium on Solid and Physical Modeling, Genoa, Italy

This paper presents an implicit curve and surface design technique that uses smooth unit step functions. With the proposed method, an implicit curve or surface can be generated by inputting a sequence of points together with the normals at these poin... Read More about Implicit curve and surface design using smooth unit step functions.

Silicon pathology? (2004)
Presentation / Conference Contribution
Marshall, A., & Tompsett, B. Silicon pathology?

The current opinion on the use of robots for landmine detection (2003)
Presentation / Conference Contribution
Rajasekharan, S., & Kambhampati, C. The current opinion on the use of robots for landmine detection. Presented at 2003 IEEE International Conference on Robotics and Automation (Cat. No.03CH37422), Taipei, Taiwan, Taiwan

Anti-Personal landmines are a significant barrier to economic and social development in a number of countries. Several sensors have been developed but each one will probably have to find, if it exists, a specific area of applicability, determined by... Read More about The current opinion on the use of robots for landmine detection.

Size exclusion chromatography and rheology of AB/AB2 hyperbranched polymers (2003)
Presentation / Conference Contribution
Kunamaneni, S., Buzza, D. M. A., Parker, D., & Feast, W. J. Size exclusion chromatography and rheology of AB/AB2 hyperbranched polymers

We report size exclusion chromatography (SEC) and linear shear rheology results for a series of AB/AB2 hyperbranched polyesters. For these samples, the weight average molecular weight Mw was systematically varied from 3000 to 250000 but the spacer le... Read More about Size exclusion chromatography and rheology of AB/AB2 hyperbranched polymers.