Skip to main content

Research Repository

Advanced Search

All Outputs (497)

Two Alternative Frameworks for Deploying Spoken Dialogue Systems to Mobile Platforms for Evaluation “In the Wild” (2014)
Presentation / Conference Contribution
Hastie, H., Aufaure, M., Alexopoulos, P., Bouchard, H., Cuayáhuitl, H., Dethlefs, N., …Yu, Y. (2014). Two Alternative Frameworks for Deploying Spoken Dialogue Systems to Mobile Platforms for Evaluation “In the Wild”. In Proceedings of the 18th Wor

We demonstrate two alternative frameworks for testing and evaluating spoken dialogue systems on mobile devices for use “in the wild”. We firstly present a spoken dialogue system that uses third party ASR (Automatic Speech Recognition) and TTS (Text-T... Read More about Two Alternative Frameworks for Deploying Spoken Dialogue Systems to Mobile Platforms for Evaluation “In the Wild”.

Rotated Hybrid, Energy-Efficient and Distributed (R-HEED) Clustering Protocol in WSN (2014)
Journal Article
Mardini, W., Yassein, M. B., Khamayseh, Y., & Ghaleb, B. (2014). Rotated Hybrid, Energy-Efficient and Distributed (R-HEED) Clustering Protocol in WSN. WSEAS Transactions on Communications, 13, 275-290

Minimizing the energy consumption for data transmission is one of the most important design considerations in Wireless Sensor Networks (WSNs). The clustering approach is considered one of the most effective methods to prolong the network lifetime in... Read More about Rotated Hybrid, Energy-Efficient and Distributed (R-HEED) Clustering Protocol in WSN.

Compound Parabolic Concentrator Design for Equatorial Africa (2014)
Presentation / Conference Contribution
Naman, G. Z., Sellami, N., Sarmah, N., Ivaturi, A., Senthilarasu, S., Bobbili, P., …Mallick, T. (2014). Compound Parabolic Concentrator Design for Equatorial Africa. In 1st Africa Photovoltaic Solar Energy Conference and Exhibition Proceedings. https:/

Compound Parabolic Concentrators (CPC) design uses interposed optical devices (such as parabolic trough, parabolic dish, linear Fresnel reflectors, etc) between the source of radiation (Sun in this case) and the energy absorbing surface (solar cell).... Read More about Compound Parabolic Concentrator Design for Equatorial Africa.

Ontology based classification for multi-label image annotation (2014)
Presentation / Conference Contribution
Reshma, I. A., Ullah, M. Z., & Aono, M. (2014). Ontology based classification for multi-label image annotation. In 2014 international conference of advanced informatics: concept, theory and application (ICAICTA) (226-231). https://doi.org/10.1109/ICAICTA

Image annotation has been an important task for visual information retrieval. It usually involves a multi-class multi-label classification problem. To solve this problem, many researches have been conducted during last two decades, although most of t... Read More about Ontology based classification for multi-label image annotation.

Query subtopic mining for search result diversification (2014)
Presentation / Conference Contribution
Ullah, M. Z., & Aono, M. (2014). Query subtopic mining for search result diversification. In 2014 International Conference of Advanced Informatics: Concept, Theory and Application (ICAICTA) (309-314). https://doi.org/10.1109/ICAICTA.2014.7005960

Web search queries are usually short, ambiguous, and contain multiple aspects or subtopics. Different users may have different search intents (or information needs) when submitting the same query. The task of identifying the subtopics underlying a qu... Read More about Query subtopic mining for search result diversification.

Analysis of Project Failure Factors for Infrastructure Projects in Saudi Arabia: A Multivariate Approach (2014)
Journal Article
Ikediashi, D. I., Ogunlana, S. O., & Alotaibi, A. (2014). Analysis of Project Failure Factors for Infrastructure Projects in Saudi Arabia: A Multivariate Approach. Journal of Construction in Developing Countries, 19(1), 35-52

The rapidly changing face of the Saudi construction industry occasioned by the boost in oil revenue means that the best project management practices must be given priority to be able to confront the challenges associated with the management of infras... Read More about Analysis of Project Failure Factors for Infrastructure Projects in Saudi Arabia: A Multivariate Approach.

Optical performances of refractive Crossed Compound Parabolic Concentrator CCPC (2014)
Presentation / Conference Contribution
Sellami, N., & Mallick, T. (2014). Optical performances of refractive Crossed Compound Parabolic Concentrator CCPC. In 29th European Photovoltaic Solar Energy Conference and Exhibition EU PVSCE 29, Netherlands (2146-2149). https://doi.org/10.4229/EUPVSEC

The design of solar concentrators depends on its application (thermal or PV) and on the tracking system that will be used. Low geometrical concentration ratios (Cg) are

Mapping on surfaces: Supporting collaborative work using interactive tabletop (2014)
Presentation / Conference Contribution
Sinmai, K., & Andras, P. (2014). Mapping on surfaces: Supporting collaborative work using interactive tabletop. In CYTED-RITOS International Workshop on Groupware (319-334). https://doi.org/10.1007/978-3-319-10166-8_29

We investigate the usability of our mindmap application using a tabletop integrated with four Android tablets in the context of support for collaborative work. This paper presents two empirical studies that compares the conventional paper-and-pen app... Read More about Mapping on surfaces: Supporting collaborative work using interactive tabletop.

Heat Exchanger Networks Retrofitted with Simultaneous Pressure Recovery (2014)
Presentation / Conference Contribution
Onishi, V., Ravagnani, M., & Caballero, J. A. (2014). Heat Exchanger Networks Retrofitted with Simultaneous Pressure Recovery. In XX Brazilian Congress of Chemical Engineering – COBEQ 2014

This paper presents a new optimization model for the retrofit of heat exchanger networks (HENs), in which the pressure recovery of streams is used to enhance heat integration. Especially important in sub-ambient processes, the HEN retrofit with press... Read More about Heat Exchanger Networks Retrofitted with Simultaneous Pressure Recovery.

Advances in Additive Manufacturing Processes (2014)
Presentation / Conference Contribution
Oppon, C., Hackney, P., Shyha, I., & Beeby, J. (2014). Advances in Additive Manufacturing Processes. In 3rd Applied Research Conference in Africa

Additive Manufacturing (AM) which is also referred as Three Dimensional Printing (3DP), Solid Freeform Fabrication (SFF) or Rapid Prototyping (RP) is a layer-by-layer technique of producing a three-dimensional (3D) objects directly from a digital mod... Read More about Advances in Additive Manufacturing Processes.

Controllability for positive discrete–time linear systems with positive state (2014)
Presentation / Conference Contribution
Guiver, C., & Townley, S. (2014, July). Controllability for positive discrete–time linear systems with positive state. Presented at The 21st International Symposium on Mathematical Theory of Networks and Systems, Groningen, The Netherlands

Controllability of componentwise nonnegative discrete-time linear systems is considered. The key difference here from the well-established positive systems theory is that we permit the case where the input takes negative values, provided that the sta... Read More about Controllability for positive discrete–time linear systems with positive state.

A stability/instability trichotomy for non-negative Lur'e systems (2014)
Presentation / Conference Contribution
Bill, A., Guiver, C., Logemann, H., & Townley, S. (2014, July). A stability/instability trichotomy for non-negative Lur'e systems. Presented at 21st International Symposium on Mathematical Theory of Networks and Systems, Groningen, The Netherlands

We identify a stability/instability trichotomy for a class of non-negative continuous-time Lur'e systems. Asymptotic as well as input-to-state stability concepts (ISS) are considered. The presented trichotomy rests on Perron-Frobenius theory, absolut... Read More about A stability/instability trichotomy for non-negative Lur'e systems.

Bounds on the dynamics of sink populations with noisy immigration (2014)
Journal Article
Eager, E. A., Guiver, C., Hodgson, D., Rebarber, R., Stott, I., & Townley, S. (2014). Bounds on the dynamics of sink populations with noisy immigration. Theoretical Population Biology, 92, 88-96. https://doi.org/10.1016/j.tpb.2013.12.004

Sink populations are doomed to decline to extinction in the absence of immigration. The dynamics of sink populations are not easily modelled using the standard framework of per capita rates of immigration, because numbers of immigrants are determined... Read More about Bounds on the dynamics of sink populations with noisy immigration.

Individual Risk in Online Social Networking Services (2014)
Presentation / Conference Contribution
Haynes, D. (2014, December). Individual Risk in Online Social Networking Services. Paper presented at Symposium at School of Maths, Computer Science and Engineering, City, University of London

When an individual signs up to an online social networking service such as Facebook, Twitter, or LinkedIn, he or she is entering into a contract with the provider. In exchange for a range of services that are free at the point of usage the provider c... Read More about Individual Risk in Online Social Networking Services.

Investigating people: a qualitative analysis of the search behaviours of open-source intelligence analysts (2014)
Presentation / Conference Contribution
McKeown, S., Maxwell, D., Azzopardi, L., & Glisson, W. B. (2014). Investigating people: a qualitative analysis of the search behaviours of open-source intelligence analysts. In IIiX '14: Proceedings of the 5th Information Interaction in Context Symposium

The Internet and the World Wide Web have become integral parts of the lives of many modern individuals, enabling almost instantaneous communication, sharing and broadcasting of thoughts, feelings and opinions. Much of this information is publicly fac... Read More about Investigating people: a qualitative analysis of the search behaviours of open-source intelligence analysts.

Comparative analysis of chaotic and non-chaotic image encryption schemes (2014)
Presentation / Conference Contribution
Younas, M. B., & Ahmad, J. (2014). Comparative analysis of chaotic and non-chaotic image encryption schemes. In 2014 International Conference on Emerging Technologies (ICET). https://doi.org/10.1109/icet.2014.7021021

In modern era, multimedia technologies have been developed significantly. Multimedia data such as audio, video and image transfers over the internet is open and insecure. Security is required for storage and transmission of digital images to avoid fr... Read More about Comparative analysis of chaotic and non-chaotic image encryption schemes.