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2014

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Articles 21241 - 21270 of 21749

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Performance Of Bch Codes With (1 + X ) S Error Detection, M Ambroze, M Tomlinson Jan 2014

Performance Of Bch Codes With (1 + X ) S Error Detection, M Ambroze, M Tomlinson

School of Engineering, Computing and Mathematics

No abstract provided.

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Toward A Self-Organizing Pre-Symbolic Neural Model Representing Sensorimotor Primitives, J Zhong, A Cangelosi, S Wermter Jan 2014

Toward A Self-Organizing Pre-Symbolic Neural Model Representing Sensorimotor Primitives, J Zhong, A Cangelosi, S Wermter

School of Engineering, Computing and Mathematics

The acquisition of symbolic and linguistic representations of sensorimotor behavior is a cognitive process performed by an agent when it is executing and/or observing own and others' actions. According to Piaget's theory of cognitive development, these representations develop during the sensorimotor stage and the pre-operational stage. We propose a model that relates the conceptualization of the higher-level information from visual stimuli to the development of ventral/dorsal visual streams. This model employs neural network architecture incorporating a predictive sensory module based on an RNNPB (Recurrent Neural Network with Parametric Biases) and a horizontal product model. We exemplify this model through a …

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A Developmental Approach To Predicting Neuronal Connectivity From Small Biological Datasets: A Gradient-Based Neuron Growth Model., R Borisyuk, Ak Al Azad, D Conte, A Roberts, Sr Soffe Jan 2014

A Developmental Approach To Predicting Neuronal Connectivity From Small Biological Datasets: A Gradient-Based Neuron Growth Model., R Borisyuk, Ak Al Azad, D Conte, A Roberts, Sr Soffe

School of Engineering, Computing and Mathematics

Relating structure and function of neuronal circuits is a challenging problem. It requires demonstrating how dynamical patterns of spiking activity lead to functions like cognitive behaviour and identifying the neurons and connections that lead to appropriate activity of a circuit. We apply a "developmental approach" to define the connectome of a simple nervous system, where connections between neurons are not prescribed but appear as a result of neuron growth. A gradient based mathematical model of two-dimensional axon growth from rows of undifferentiated neurons is derived for the different types of neurons in the brainstem and spinal cord of young tadpoles …

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Bilateral Gain Control; An “Innate Predisposition” For All Sorts Of Things, N Wilkinson, G Metta Jan 2014

Bilateral Gain Control; An “Innate Predisposition” For All Sorts Of Things, N Wilkinson, G Metta

School of Engineering, Computing and Mathematics

Empirical studies have revealed remarkable perceptual organization in neonates. Newborn behavioral distinctions have often been interpreted as implying functionally specific modular adaptations, and are widely cited as evidence supporting the nativist agenda. In this theoretical paper, we approach newborn perception and attention from an embodied, developmental perspective. At the mechanistic level, we argue that a generative mechanism based on mutual gain control between bilaterally corresponding points may underly a number of functionally defined "innate predispositions" related to spatial-configural perception. At the computational level, bilateral gain control implements beamforming, which enables spatial-configural tuning at the front end sampling stage. At the …

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Uneven Batch Data Alignment With Application To The Control Of Batch End-Product Quality, J Wan, O Marjanovic, B Lennox Jan 2014

Uneven Batch Data Alignment With Application To The Control Of Batch End-Product Quality, J Wan, O Marjanovic, B Lennox

School of Engineering, Computing and Mathematics

Batch processes are commonly characterized by uneven trajectories due to the existence of batch-to-batch variations. The batch end-product quality is usually measured at the end of these uneven trajectories. It is necessary to align the time differences for both the measured trajectories and the batch end-product quality in order to implement statistical process monitoring and control schemes. Apart from synchronizing trajectories with variable lengths using an indicator variable or dynamic time warping, this paper proposes a novel approach to align uneven batch data by identifying short-window PCA&PLS models at first and then applying these identified models to extend shorter trajectories …

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Vacuum Refractive Indices And Helicity Flip In Strong-Field Qed, Victor Dinu, Tom Heinzl, Anton Ilderton, Mattias Marklund, Greger Torgrimsson Jan 2014

Vacuum Refractive Indices And Helicity Flip In Strong-Field Qed, Victor Dinu, Tom Heinzl, Anton Ilderton, Mattias Marklund, Greger Torgrimsson

School of Engineering, Computing and Mathematics

No abstract provided.

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Comparative Efficacy And Safety Of Treatments For Localised Prostate Cancer: An Application Of Network Meta-Analysis, Tengbin Xiong, Rebecca M. Turner, Yinghui Wei, David E. Neal, Georgios Lyratzopoulos, Julian P.T. Higgins Jan 2014

Comparative Efficacy And Safety Of Treatments For Localised Prostate Cancer: An Application Of Network Meta-Analysis, Tengbin Xiong, Rebecca M. Turner, Yinghui Wei, David E. Neal, Georgios Lyratzopoulos, Julian P.T. Higgins

School of Engineering, Computing and Mathematics

ContextThere is ongoing uncertainty about the optimal management of patients with localised prostate cancer.ObjectiveTo evaluate the comparative efficacy and safety of different treatments for patients with localised prostate cancer.DesignSystematic review with Bayesian network meta-analysis to estimate comparative ORs, and a score (0–100%) that, for a given outcome, reflects average rank order of superiority of each treatment compared against all others, using the Surface Under the Cumulative RAnking curve (SUCRA) statistic.Data sourcesElectronic searches of MEDLINE without language restriction.Study selectionRandomised trials comparing the efficacy and safety of different primary treatments (48 papers from 21 randomised trials included 7350 men).Data extraction2 reviewers independently …

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Photon Polarization In Light-By-Light Scattering: Finite Size Effects, Victor Dinu, Tom Heinzl, Anton Ilderton, Mattias Marklund, Greger Torgrimsson Jan 2014

Photon Polarization In Light-By-Light Scattering: Finite Size Effects, Victor Dinu, Tom Heinzl, Anton Ilderton, Mattias Marklund, Greger Torgrimsson

School of Engineering, Computing and Mathematics

No abstract provided.

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Thinking In Circuits: Toward Neurobiological Explanation In Cognitive Neuroscience., Friedemann Pulvermüller, Max Garagnani, Thomas Wennekers Jan 2014

Thinking In Circuits: Toward Neurobiological Explanation In Cognitive Neuroscience., Friedemann Pulvermüller, Max Garagnani, Thomas Wennekers

School of Engineering, Computing and Mathematics

Cognitive theory has decomposed human mental abilities into cognitive (sub) systems, and cognitive neuroscience succeeded in disclosing a host of relationships between cognitive systems and specific structures of the human brain. However, an explanation of why specific functions are located in specific brain loci had still been missing, along with a neurobiological model that makes concrete the neuronal circuits that carry thoughts and meaning. Brain theory, in particular the Hebb-inspired neurocybernetic proposals by Braitenberg, now offers an avenue toward explaining brain-mind relationships and to spell out cognition in terms of neuron circuits in a neuromechanistic sense. Central to this endeavor …

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Light-Front Quantum Chromodynamics, B. L.G. Bakker, A. Bassetto, S. J. Brodsky, W. Broniowski, S. Dalley, T. Frederico, S. D. Głazek, J. R. Hiller, C. R. Ji, V. Karmanov, D. Kulshreshtha, J. F. Mathiot, W. Melnitchouk, G. A. Miller, J. Papavassiliou, W. N. Polyzou, N. G. Stefanis, J. P. Vary, A. Ilderton, T. Heinzl Jan 2014

Light-Front Quantum Chromodynamics, B. L.G. Bakker, A. Bassetto, S. J. Brodsky, W. Broniowski, S. Dalley, T. Frederico, S. D. Głazek, J. R. Hiller, C. R. Ji, V. Karmanov, D. Kulshreshtha, J. F. Mathiot, W. Melnitchouk, G. A. Miller, J. Papavassiliou, W. N. Polyzou, N. G. Stefanis, J. P. Vary, A. Ilderton, T. Heinzl

School of Engineering, Computing and Mathematics

No abstract provided.

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A Stochastic Method For Computing Hadronic Matrix Elements, Constantia Alexandrou, Martha Constantinou, Simon Dinter, Vincent Drach, Karl Jansen, Kyriakos Hadjiyiannakou, Dru B. Renner Jan 2014

A Stochastic Method For Computing Hadronic Matrix Elements, Constantia Alexandrou, Martha Constantinou, Simon Dinter, Vincent Drach, Karl Jansen, Kyriakos Hadjiyiannakou, Dru B. Renner

School of Engineering, Computing and Mathematics

No abstract provided.

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Evaluation Of Disconnected Quark Loops For Hadron Structure Using Gpus, C. Alexandrou, M. Constantinou, V. Drach, K. Hadjiyiannakou, K. Jansen, G. Koutsou, A. Strelchenko, A. Vaquero Jan 2014

Evaluation Of Disconnected Quark Loops For Hadron Structure Using Gpus, C. Alexandrou, M. Constantinou, V. Drach, K. Hadjiyiannakou, K. Jansen, G. Koutsou, A. Strelchenko, A. Vaquero

School of Engineering, Computing and Mathematics

No abstract provided.

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Observations Of Bedforms On A Dissipative Macrotidal Beach, Jon Miles, Antony Thorpe, Paul Russell, Gerd Masselink Jan 2014

Observations Of Bedforms On A Dissipative Macrotidal Beach, Jon Miles, Antony Thorpe, Paul Russell, Gerd Masselink

School of Engineering, Computing and Mathematics

No abstract provided.

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Application Of Artificial Neural Networks To Weighted Interval Kalman Filtering, Amit Motwani, Sanjay K. Sharma, Robert Sutton, Phil Culverhouse Jan 2014

Application Of Artificial Neural Networks To Weighted Interval Kalman Filtering, Amit Motwani, Sanjay K. Sharma, Robert Sutton, Phil Culverhouse

School of Engineering, Computing and Mathematics

No abstract provided.

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Non-Linear Control Algorithms For An Unmanned Surface Vehicle, Sanjay K. Sharma, Robert Sutton, Amit Motwani, Andy Annamalai Jan 2014

Non-Linear Control Algorithms For An Unmanned Surface Vehicle, Sanjay K. Sharma, Robert Sutton, Amit Motwani, Andy Annamalai

School of Engineering, Computing and Mathematics

No abstract provided.

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A Novel Real-Time Non-Linear Wavelet-Based Model Predictive Controller For A Coupled Tank System, Kayode Owa, Sanjay Sharma, Robert Sutton Jan 2014

A Novel Real-Time Non-Linear Wavelet-Based Model Predictive Controller For A Coupled Tank System, Kayode Owa, Sanjay Sharma, Robert Sutton

School of Engineering, Computing and Mathematics

This article presents the design, simulation and real-time implementation of a constrained non-linear model predictive controller for a coupled tank system. A novel wavelet-based function neural network model and a genetic algorithm online non-linear real-time optimisation approach were used in the non-linear model predictive controller strategy. A coupled tank system, which resembles operations in many chemical processes, is complex and has inherent non-linearity, and hence, controlling such system is a challenging task. Particularly important is low-level control where often instability and oscillatory responses are observed. This article designs a wavelet neural network with high predicting precision and time–frequency localisation characteristics …

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Megaripple Dynamics On A Dissipative Sandy Beach, Jon Miles, Antony Thorpe, Paul Russell, Gerd Masselink Jan 2014

Megaripple Dynamics On A Dissipative Sandy Beach, Jon Miles, Antony Thorpe, Paul Russell, Gerd Masselink

School of Engineering, Computing and Mathematics

No abstract provided.

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Bedform Dynamics In A Rip Current, Antony Thorpe, Jon Miles, Gerd Masselink, Paul Russell Jan 2014

Bedform Dynamics In A Rip Current, Antony Thorpe, Jon Miles, Gerd Masselink, Paul Russell

School of Engineering, Computing and Mathematics

No abstract provided.

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An Updated Synthesis Of The Impacts Of Ocean Acidification On Marine Biodiversity, Tracy Aze, J Barry, R G J Bellerby, L Brander, M Byrne, S Dupont, J-P Gattuso, S Gibbs, L Hansson, C Hattam, Others Jan 2014

An Updated Synthesis Of The Impacts Of Ocean Acidification On Marine Biodiversity, Tracy Aze, J Barry, R G J Bellerby, L Brander, M Byrne, S Dupont, J-P Gattuso, S Gibbs, L Hansson, C Hattam, Others

School of Biological and Marine Sciences

No abstract provided.

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The Recession Of 2008 And Its Impact On Light-Duty Vehicle Emissions In Three Western Us Cities, Gary A. Bishop, Donald H. Stedman Jan 2014

The Recession Of 2008 And Its Impact On Light-Duty Vehicle Emissions In Three Western Us Cities, Gary A. Bishop, Donald H. Stedman

Fuel Efficiency Automobile Test Publications

The global economic recession of 2008 - 2010 severely depressed light-duty vehicle sales in the United States. On-road fleets observed with a remote vehicle exhaust sensor in 2013 at three historical sampling locations in Denver, Los Angeles and Tulsa showed large reductions in the fleet fractions of 2009 model year vehicles of 40%, 38% and 35% respectively when compared to prerecession 2007 levels with the light-duty truck category suffering the largest percentage declines. The fleet fraction for these ~5 year old vehicles is normally reserved for vehicles more than twice their age. This resulted in a significant increase in the …

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Feat Math Ii And A Discussion Of Negative Measurements, Gary A. Bishop Jan 2014

Feat Math Ii And A Discussion Of Negative Measurements, Gary A. Bishop

Fuel Efficiency Automobile Test Publications

No abstract provided.

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Cloud Security Meets Telemedicine, Michael N. Johnstone Jan 2014

Cloud Security Meets Telemedicine, Michael N. Johnstone

Research outputs 2014 to 2021

Medical systems are potentially one domain where security is seen as an impediment to patient care and not as an essential part of a system. This is an issue for safety-critical systems where reliability and trust are essential for successful operation. Cloud computing services offer a seamless means to allow medical data to be transferred from patient to medical specialist, whilst maintaining security requirements. This paper uses a case study to investigate the use of cloud computing in a mobile application to assist with diagnostics for patients with Parkinson Disease. It was found that the developers of the app ignored …

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On-Road Remote Sensing Of Automobile Emissions In The Denver Area: Winter 2013, Gary A. Bishop, Donald H. Stedman Jan 2014

On-Road Remote Sensing Of Automobile Emissions In The Denver Area: Winter 2013, Gary A. Bishop, Donald H. Stedman

Fuel Efficiency Automobile Test Publications

No abstract provided.

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Rsd Basics (Presentation), Donald H. Stedman, Gary A. Bishop Jan 2014

Rsd Basics (Presentation), Donald H. Stedman, Gary A. Bishop

Fuel Efficiency Automobile Test Publications

No abstract provided.

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Heavy Duty Truck Emissions (Presentation), Donald H. Stedman, Gary A. Bishop Jan 2014

Heavy Duty Truck Emissions (Presentation), Donald H. Stedman, Gary A. Bishop

Fuel Efficiency Automobile Test Publications

No abstract provided.

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Colorado Long Term Light-Duty Vehicle On-Road Emission Trends (Presentation), Gary A. Bishop, Donald H. Stedman Jan 2014

Colorado Long Term Light-Duty Vehicle On-Road Emission Trends (Presentation), Gary A. Bishop, Donald H. Stedman

Fuel Efficiency Automobile Test Publications

No abstract provided.

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Towards The Grounding Of Abstract Categories In Cognitive Robots, Francesca Stramandinoli Jan 2014

Towards The Grounding Of Abstract Categories In Cognitive Robots, Francesca Stramandinoli

School of Engineering, Computing and Mathematics Theses

The grounding of language in humanoid robots is a fundamental problem, especially in social scenarios which involve the interaction of robots with human beings. Indeed, natural language represents the most natural interface for humans to interact and exchange information about concrete entities like KNIFE, HAMMER and abstract concepts such as MAKE, USE. This research domain is very important not only for the advances that it can produce in the design of human-robot communication systems, but also for the implication that it can have on cognitive science. Abstract words are used in daily conversations among people to describe events and situations …

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A Study Of Non-Linguistic Utterances For Social Human-Robot Interaction, Robin Read Jan 2014

A Study Of Non-Linguistic Utterances For Social Human-Robot Interaction, Robin Read

School of Engineering, Computing and Mathematics Theses

The world of animation has painted an inspiring image of what the robots of the future could be. Taking the robots R2D2 and C3PO from the Star Wars films as representative examples, these robots are portrayed as being more than just machines, rather, they are presented as intelligent and capable social peers, exhibiting many of the traits that people have also. These robots have the ability to interact with people, understand us, and even relate to us in very personal ways through a wide repertoire of social cues. As robotic technologies continue to make their way into society at large, …

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Non-Intrusive Continuous User Authentication For Mobile Devices, Sevasti Karatzouni Jan 2014

Non-Intrusive Continuous User Authentication For Mobile Devices, Sevasti Karatzouni

School of Engineering, Computing and Mathematics Theses

The modern mobile device has become an everyday tool for users and business. Technological advancements in the device itself and the networks that connect them have enabled a range of services and data access which have introduced a subsequent increased security risk. Given the latter, the security requirements need to be re-evaluated and authentication is a key countermeasure in this regard. However, it has traditionally been poorly served and would benefit from research to better understand how authentication can be provided to establish sufficient trust. This thesis investigates the security requirements of mobile devices through literature as well as acquiring …

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Enhancing Usability Using Automated Security Interface Adaptation (Asia), Zarul Fitri Zaaba Jan 2014

Enhancing Usability Using Automated Security Interface Adaptation (Asia), Zarul Fitri Zaaba

School of Engineering, Computing and Mathematics Theses

Many users are now significantly dependent upon computer application. Whilst many aspects are now used very successfully, an area in which usability difficulties continue to be encountered is in relation to security. Thus can become particularly acute in situations where users are required to interact and make decisions, and a key context here is typically when they need to respond to security warnings. The current implementation of security warnings can often be considered as an attempt to offer a one size fits all solution. However, it can be argued that many implementations are still lacking the ability to provide meaningful …

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