All Outputs (21)

A language for failure patterns and application in safety analysis (2008)
Presentation / Conference Contribution
Wolforth, I., Walker, M., & Papadopoulos, Y. A language for failure patterns and application in safety analysis. Presented at 2008 Third International Conference on Dependability of Computer Systems DepCoS-RELCOMEX

Components and families of components in mechatronic systems often exhibit failure characteristics that are independent of system context and repeatable across applications. In this paper, we show that it is possible to capture and reuse such pattern... Read More about A language for failure patterns and application in safety analysis.

Semi automatic failure analysis based on simulation models (2008)
Presentation / Conference Contribution
Hamann, R., Uhlig, A., Papadopoulos, Y., Rüde, E., Grätz, U., Walker, M., & Lien, R. (2018, June). Semi automatic failure analysis based on simulation models. Presented at Volume 2: Structures, Safety and Reliability

Classical risk assessment and risk management which is gaining importance in many industries is usually based on well defined processes and uses techniques like FTA and FMEA. However, classical risk analysis techniques like FTA and FMEA should ideall... Read More about Semi automatic failure analysis based on simulation models.

Multi-objective optimization of dependability attributes using an asynchronous heterogeneous hierarchical parallel genetic algorithm (2008)
Journal Article
Wenhua, Z., Papadopoulos, Y., & Parker, D. (2008). Multi-objective optimization of dependability attributes using an asynchronous heterogeneous hierarchical parallel genetic algorithm. IFAC Proceedings Volumes/ International Federation of Automatic Control, 41(3), 199-204. https://doi.org/10.3182/20081205-2-cl-4009.00036

The optimal satisfaction of dependability attributes and cost, in the design of engineering systems, is a hard multi-objective optimization problem which requires automated algorithms that can effectively search large design spaces. In this paper, a... Read More about Multi-objective optimization of dependability attributes using an asynchronous heterogeneous hierarchical parallel genetic algorithm.

Spiking neurons and synaptic stimuli : determining the fidelity of coincidence-factor in neural response comparison (2008)
Journal Article
Kambhampati, C., & Sarangdhar, M. (2008). Spiking neurons and synaptic stimuli : determining the fidelity of coincidence-factor in neural response comparison. Engineering Letters International Association of Engineers, 16(4), 512-517

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 and synaptic stimuli : determining the fidelity of coincidence-factor in neural response comparison.

Virtual reality training for radiotherapy becomes a reality (2008)
Journal Article
Phillips, R., Ward, J. W., Page, L., Grau, C., Bojen, A., Hall, J., Nielsen, K., Nordentoft, V., & Beavis, A. W. (2008). Virtual reality training for radiotherapy becomes a reality. Studies in health technology and informatics, 132, 366-371

A report in 2007 to the UK Government identified a crisis in England for training staff and students for the radiotherapy treatment of cancer. The Hull authors have developed an immersive life size virtual environment of a radiotherapy treatment room... Read More about Virtual reality training for radiotherapy becomes a reality.

Robust FDI for FTC coordination in a distributed network system (2008)
Journal Article
Klinkhieo, S., Patton, R. J., & Kambhampati, C. (2008). Robust FDI for FTC coordination in a distributed network system. IFAC Proceedings Volumes/ International Federation of Automatic Control, 41(2), 13551-13556. https://doi.org/10.3182/20080706-5-KR-1001.0468

This paper focuses on the development of a suitable Fault Detection and Isolation (FDI) strategy for application to a system of inter-connected and distributed systems, as a basis for a fault-tolerant Network Control System (NCS) problem. The work fo... Read More about Robust FDI for FTC coordination in a distributed network system.

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?.

The cubic Segre variety in PG(5,2) (2008)
Journal Article
Shaw, R., & Gordon, N. A. (2009). The cubic Segre variety in PG(5,2). Designs, codes, and cryptography, 51(2), 141-156. https://doi.org/10.1007/s10623-008-9250-2

The Segre variety S 1,2 in PG(5, 2) is a 21-set of points which is shown to have a cubic equation Q(x) = 0. If T(x, y, z) denotes the alternating trilinear form obtained by completely polarizing the cubic polynomial Q, then the associate U # of an r-... Read More about The cubic Segre variety in PG(5,2).

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.

Risk-sensitive antipredator behavior in the Trinidadian guppy, Poecilia reticulata (2008)
Journal Article
Botham, M. S., Hayward, R. K., Morrell, L. J., Croft, D. P., Ward, J. R., Ramnarine, I., & Krause, J. (2008). Risk-sensitive antipredator behavior in the Trinidadian guppy, Poecilia reticulata. Ecology, 89(11), 3174-3185. https://doi.org/10.1890/07-0490.1

The comparative approach has become a powerful tool for understanding how predation has shaped prey behavior. In this study we recorded the occurrence of common aquatic predator species and their densities in seven natural populations of Trinidadian... Read More about Risk-sensitive antipredator behavior in the Trinidadian guppy, Poecilia reticulata.

A rule-based system for programming self-organized sensor and actor networks (2008)
Journal Article
Dressler, F., Dietrich, I., German, R., & Krüger, B. (2009). A rule-based system for programming self-organized sensor and actor networks. Computer Networks, 53(10), 1737-1750. https://doi.org/10.1016/j.comnet.2008.09.007

We describe a programming scheme for massively distributed systems that are assumed to self-organize according to a given set of simple rules. The focus of this investigation is operation and control in sensor and actor networks (SANETs). The main is... Read More about A rule-based system for programming self-organized sensor and actor networks.

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.

Steering and visualization: Enabling technologies for computational science (2008)
Journal Article
Wright, H., Crompton, R. H., Kharche, S., & Wenisch, P. (2010). Steering and visualization: Enabling technologies for computational science. Future generations computer systems : FGCS, 26(3), 506-513. https://doi.org/10.1016/j.future.2008.06.015

Computational steering is an investigative paradigm whereby the parameters of a running program can be altered according to what is seen in the currently visualized results of the simulation. For certain problems, interactive computation brings speci... Read More about Steering and visualization: Enabling technologies for computational science.

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.

Stable quantum filters with scattering phenomena (2008)
Journal Article
Ahamed, W. U., & Kambhampati, C. (2008). Stable quantum filters with scattering phenomena. International Journal of Automation and Computing, 5(2), 132-137. https://doi.org/10.1007/s11633-008-0132-x

Quantum neural network filters for signal processing have received a lot of interest in the recent past. The implementations of these filters had a number of design parameters that led to numerical inefficiencies. At the same time the solution proced... Read More about Stable quantum filters with scattering phenomena.

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.

Linking perception and action through motivation and affect (2008)
Journal Article
Davis, D. N. (2008). Linking perception and action through motivation and affect. Journal of Experimental and Theoretical Artificial Intelligence, 20(1), 37-60. https://doi.org/10.1080/09528130701472424

Research into cognitive architectures is described within a framework spanning major issues in artificial intelligence and cognitive science. Earlier work on motivation is extended with a cognitive model of reasoning which, together with an affective... Read More about Linking perception and action through motivation and affect.

Autonomous clustering using rough set theory (2008)
Journal Article
Bean, C., & Kambhampati, C. (2008). Autonomous clustering using rough set theory. International Journal of Automation and Computing, 5(1), 90-102. https://doi.org/10.1007/s11633-008-0090-3

This paper proposes a clustering technique that minimizes the need for subjective human intervention and is based on elements of rough set theory (RST). The proposed algorithm is unified in its approach to clustering and makes use of both local and g... Read More about Autonomous clustering using rough set theory.

Haptic feedback can provide an objective assessment of arthroscopic skills (2008)
Journal Article
Chami, G., Ward, J. W., Phillips, R., & Sherman, K. P. (2008). Haptic feedback can provide an objective assessment of arthroscopic skills. Clinical orthopaedics and related research, 466(4), 963-968. https://doi.org/10.1007/s11999-008-0115-9

The outcome of arthroscopic procedures is related to the surgeon's skills in arthroscopy. Currently, evaluation of such skills relies on direct observation by a surgeon trainer. This type of assessment, by its nature, is subjective and time-consuming... Read More about Haptic feedback can provide an objective assessment of arthroscopic skills.

Posterior probability measure for image matching (2008)
Journal Article
Feng, Z., Lu, N., & Jiang, P. (2008). Posterior probability measure for image matching. Pattern Recognition, 41(7), 2422-2433. https://doi.org/10.1016/j.patcog.2007.12.013

Template matching is one of the principle techniques in visual tracking. Various similarity measures have been developed to find the target
in an acquired image by matching with a template. However, mismatching or misidentification may sporadically... Read More about Posterior probability measure for image matching.