Open Access. Powered by Scholars. Published by Universities.®

Digital Commons Network™

Open Access. Powered by Scholars. Published by Universities.®

2018

Discipline
Institution
Keyword
Publication
Publication Type
File Type

Articles 24961 - 24990 of 25686

Full-Text Articles in Entire DC Network

Data Browser 06: Executing Practices, Geoff Cox, Olle Essvik, Jennifer Gabrys, Francisco Gallardo, David Gauthier, Linda Hilfling Ritasdatter, Brian House, Yuk Hui, Marie Louise Juul Søndergaard, Peggy Pierrot, Andrew Prior, Helen Pritchard, Roel Roscam Abbing, Audrey Samson, Kasper Hedegård Schiølin, Susan Schuppli, Femke Snelting, Eric Snodgrass, Winnie Soon, Magdalena Tyzlik-Carver Jan 2018

Data Browser 06: Executing Practices, Geoff Cox, Olle Essvik, Jennifer Gabrys, Francisco Gallardo, David Gauthier, Linda Hilfling Ritasdatter, Brian House, Yuk Hui, Marie Louise Juul Søndergaard, Peggy Pierrot, Andrew Prior, Helen Pritchard, Roel Roscam Abbing, Audrey Samson, Kasper Hedegård Schiølin, Susan Schuppli, Femke Snelting, Eric Snodgrass, Winnie Soon, Magdalena Tyzlik-Carver

School of Art, Design and Architecture

This book is a result of collective energy that brought together a group of artists, researchers and practitioners. Their different practices and approaches to the question of execution sparked a desire to carry out a project where thinking about software is entangled with various practices of computationally-informed executions.

Go to article

From Babies To Robots: The Contribution Of Developmental Robotics To Developmental Psychology, A Cangelosi, M Schlesinger Jan 2018

From Babies To Robots: The Contribution Of Developmental Robotics To Developmental Psychology, A Cangelosi, M Schlesinger

School of Engineering, Computing and Mathematics

© 2018 The Society for Research in Child Development, Inc. The latest developments in artificial intelligence (AI) and machine learning, and the parallel advances in robotics, have contributed recently to a shift in the scientific approach to modeling human intelligence. These innovations, accompanied by the new emphasis on embodied and grounded cognition in AI and psychology, have led to the establishment of the field of developmental robotics. This field features an interdisciplinary approach, built on collaboration between cognitive robotics and child psychology, to the autonomous design of behavioral and cognitive capabilities in artificial cognitive agents, such as robots, which is …

Go to article

Fatigue Crack Growth Rate Curve Based On The Cjp Model And Its Application Method, B Yang Jan 2018

Fatigue Crack Growth Rate Curve Based On The Cjp Model And Its Application Method, B Yang

School of Engineering, Computing and Mathematics

Fatigue crack growth rate tests of commercial pure titanium specimens with 5 different height-width ratios of CT specimens using the digital imagine correlation technique are carried out. The traditional stress intensity factor range, ?K, and the new definition of the stress intensity factor range, ?KCJP, which is under the theory of the CJP model, are utilized in the analysis of the test data. Both the da/dN-?K curve and the da/dN-?KCJP curve reflect the distribution of the test data effectively and show good fitting effects. Compared to the traditional ?K, the ?KCJP is obtained directly from the displacement fields near the …

Go to article

Carbon Nanotube-Reinforced Smart Composites For Sensing Freezing Temperature And Deicing By Self-Heating, S Jang, Y-L Park Jan 2018

Carbon Nanotube-Reinforced Smart Composites For Sensing Freezing Temperature And Deicing By Self-Heating, S Jang, Y-L Park

School of Engineering, Computing and Mathematics

Carbon nanotube-reinforced polymer composites were fabricated by high shear mixing. The microstructure and the electrical properties of the carbon nanotube–polymer composites were investigated by scanning electron microscopy and electrical resistance measurement. We found that the carbon nanotube composites showed high electrical conductivity (1.5 S m-1) at 7.0 wt% of carbon nanotubes, and the increase in thickness enhanced the electrical conductivity of the composites. The multifunctional properties of the carbon nanotube composites were also investigated for use in sensing the freezing temperature and also in deicing by self-heating. The results showed that the carbon nanotube–polymer composites had high temperature sensitivity in …

Go to article

Digitalized Cognitive Assessment Mediated By A Virtual Caregiver, Matteo Luperto, Marta Romeo, Francesca Lunardini, Nicola Basilico, Ray Jones, Angelo Cangelosi, Simona Ferrante, Na Borghese Jan 2018

Digitalized Cognitive Assessment Mediated By A Virtual Caregiver, Matteo Luperto, Marta Romeo, Francesca Lunardini, Nicola Basilico, Ray Jones, Angelo Cangelosi, Simona Ferrante, Na Borghese

School of Nursing and Midwifery

The ageing of the population deeply impacts on the social costs relative to health care. The use of modern technologies is one of the most promising approaches, under current study, to reduce such impact. In this demonstration, we propose a framework that can be employed for at-home assessment of Mild Cognitive Impairment (MCI). It is composed by a set of digitalized cognitive tests, developed from their paper-and-pencil counterparts, and by a Virtual Caregiver, which oversees the test execution and provides instructions.

Go to article

Backreaction On Background Fields: A Coherent State Approach, A Ilderton, D Seipt Jan 2018

Backreaction On Background Fields: A Coherent State Approach, A Ilderton, D Seipt

School of Engineering, Computing and Mathematics

There are many situations in which a strong electromagnetic field may be approximated as a fixed background. Going beyond this approximation, i.e. accounting for the back-reaction of quantum process on the field, is however challenging. Here we develop an approach to this problem which is a straightforward extension of background field methods. The approach follows from the observation that scattering in an on-shell background is equivalent to scattering between coherent states; we show that by deforming these states one can model back-reaction. Focussing on intense laser-matter interactions, we provide examples which model beam depletion and, furthermore, introduce an extremisation principle …

Go to article

Demonstration And Damnation: William Blake's Eternal Death Of Unbelief, Joshua Schouten De Jel Jan 2018

Demonstration And Damnation: William Blake's Eternal Death Of Unbelief, Joshua Schouten De Jel

School of Law, Humanities and Social Sciences

In Blake’s mythopoeia, as well as his personal eschatology, belief is the source of life itself; all creative acts, all visionary episodes, stem from an individual’s belief. “Eternal Death,” which is the cycle of Generation, is the result of unbelief. Francis Bacon, Isaac Newton, and John Locke were, for Blake, the triumvirate of culpable votaries for the propagation of rational reductionism which had led to the reification of “Natural Religion” in the form of Deism and Rational Dissent in England and, with the addition of Rousseau and Voltaire, of the apotheosis in France of the Cult of Reason. The French …

Go to article

The Nature Of Twitter Trending Topics Analysing Intrinsic Factors Associated With The Twitter Ecosystem, Ma Palomino, Q Ribac, G Masala Jan 2018

The Nature Of Twitter Trending Topics Analysing Intrinsic Factors Associated With The Twitter Ecosystem, Ma Palomino, Q Ribac, G Masala

School of Engineering, Computing and Mathematics

We are inundated with data—companies such as Twitter deal with petabytes of information on a daily basis. However, some users, especially the new ones, often find it difficult to cope with the overwhelming and disorganised deluge of information. Scientists have already worked out ways to identify Twitter trending topics, as a means to index information and make sense of it. However, we know little about the impact on trending topics of various intrinsic factors associated with the Twitter ecosystem. For example, anecdotal evidence suggests that trending topics are characterised by highly polarised tweets, or that large audiences typically host the …

Go to article

From Structure To Activity: Using Centrality Measures To Predict Neuronal Activity, Jack Mc Kay Fletcher, Thomas Wennekers Jan 2018

From Structure To Activity: Using Centrality Measures To Predict Neuronal Activity, Jack Mc Kay Fletcher, Thomas Wennekers

School of Engineering, Computing and Mathematics

It is clear that the topological structure of a neural network somehow determines the activity of the neurons within it. In the present work, we ask to what extent it is possible to examine the structural features of a network and learn something about its activity? Specifically, we consider how the centrality (the importance of a node in a network) of a neuron correlates with its firing rate. To investigate, we apply an array of centrality measures, including In-Degree, Closeness, Betweenness, Eigenvector, Katz, PageRank, Hyperlink-Induced Topic Search (HITS) and NeuronRank to Leaky-Integrate and Fire neural networks with different connectivity schemes. …

Go to article

Update On Su(2) Gauge Theory With NF = 2 Fundamental Flavours., Vincent Drach, Tadeusz Janowski, Claudio Pica Jan 2018

Update On Su(2) Gauge Theory With NF = 2 Fundamental Flavours., Vincent Drach, Tadeusz Janowski, Claudio Pica

School of Engineering, Computing and Mathematics

We present a non perturbative study of SU(2) gauge theory with two fundamental Dirac flavours. This theory provides a minimal template which is ideal for a wide class of Standard Model extensions featuring novel strong dynamics, such as a minimal realization of composite Higgs models. We present an update on the status of the meson spectrum and decay constants based on increased statistics on our existing ensembles and the inclusion of new ensembles with lighter pion masses, resulting in a more reliable chiral extrapolation. Preprint: CP3-Origins-2017-048 DNRF90

Go to article

Intermittent Wave Energy Generation System With Hydraulic Energy Storage And Pressure Control For Stable Power Output, Ruiyin Song, Yong Ming Dai, Xiaohua Qian Jan 2018

Intermittent Wave Energy Generation System With Hydraulic Energy Storage And Pressure Control For Stable Power Output, Ruiyin Song, Yong Ming Dai, Xiaohua Qian

School of Engineering, Computing and Mathematics

No abstract provided.

Go to article

Robot Enhanced Therapy For Children With Autism (Dream): A Social Model Of Autism, K Richardson, M Coeckelbergh, K Wakunuma, E Billing, T Ziemke, P Gomez, B Vanderborght, T Belpaeme Jan 2018

Robot Enhanced Therapy For Children With Autism (Dream): A Social Model Of Autism, K Richardson, M Coeckelbergh, K Wakunuma, E Billing, T Ziemke, P Gomez, B Vanderborght, T Belpaeme

School of Engineering, Computing and Mathematics

No abstract provided.

Go to article

Guidelines For Designing Social Robots As Second Language Tutors, T Belpaeme, P Vogt, Den Berghe R Van, K Bergmann, T Göksun, Haas M De, J Kanero, J Kennedy, Ac Küntay, O Oudgenoeg-Paz, F Papadopoulos, T Schodde, J Verhagen, Cd Wallbridge, B Willemsen, Wit J De, V Geçkin, L Hoffmann, S Kopp, E Krahmer, E Mamus, J-M Montanier, C Oranç, Ak Pandey Jan 2018

Guidelines For Designing Social Robots As Second Language Tutors, T Belpaeme, P Vogt, Den Berghe R Van, K Bergmann, T Göksun, Haas M De, J Kanero, J Kennedy, Ac Küntay, O Oudgenoeg-Paz, F Papadopoulos, T Schodde, J Verhagen, Cd Wallbridge, B Willemsen, Wit J De, V Geçkin, L Hoffmann, S Kopp, E Krahmer, E Mamus, J-M Montanier, C Oranç, Ak Pandey

School of Engineering, Computing and Mathematics

In recent years, it has been suggested that social robots have potential as tutors and educators for both children and adults. While robots have been shown to be effective in teaching knowledge and skill-based topics, we wish to explore how social robots can be used to tutor a second language to young children. As language learning relies on situated, grounded and social learning, in which interaction and repeated practice are central, social robots hold promise as educational tools for supporting second language learning. This paper surveys the developmental psychology of second language learning and suggests an agenda to study how …

Go to article

Development And Test Of An Open Source Autonomous Sailing Robot With Accessibility, Generality And Extendability, U Vautier, J Wan, M Dai, C Viel, R Hone Jan 2018

Development And Test Of An Open Source Autonomous Sailing Robot With Accessibility, Generality And Extendability, U Vautier, J Wan, M Dai, C Viel, R Hone

School of Engineering, Computing and Mathematics

This paper introduces the design of an open source autonomous sailing robot with emphasis on its accessibility, generality and extendability. To meet such requirements, a generic control box connecting an Arduino board and a Raspberry Pi computer was tailor-made so as to host the robot operating system (ROS) and to interact with versatile sensors and actuators. The goal of such a project is to create an accessible, generic and expendable platform of autonomous sailboats for wider education and research publicity and engagement. Autonomous sailing test for the developed sailboat was also conducted to validate its design.

Go to article

Comparative Study Of Stirrup-Confined Circular Concrete-Filled Steel Tubular Stub Columns Under Axial Loading, Fa Xing Ding, Jiang Zhu, Shan Shan Cheng, Xuemei Liu Jan 2018

Comparative Study Of Stirrup-Confined Circular Concrete-Filled Steel Tubular Stub Columns Under Axial Loading, Fa Xing Ding, Jiang Zhu, Shan Shan Cheng, Xuemei Liu

School of Engineering, Computing and Mathematics

© 2017 Elsevier Ltd This paper presents a comparative study of circular concrete-filled steel tubular stub columns with three different stirrup confinement types: bidirectional stirrups, loop stirrups and orthogonal stirrups. Axial compression tests have been carried out aiming at investigating the effects of the stirrup form and volume-stirrup ratio on the mechanical behavior of the stirrup-confined circular CFT stub columns, and ABAQUS was used to carry out the 3D numerical modelling. Radial stress of the core concrete and the composite action among the steel tube, stirrups and the core concrete have been investigated. It is found that the confinement provided …

Go to article

Assessing The Size Of A Twin-Cylinder Wave Energy Converter Designed For Real Sea-States, Dali Xu, Raphael Stuhlmeier, Michael Stiassnie Jan 2018

Assessing The Size Of A Twin-Cylinder Wave Energy Converter Designed For Real Sea-States, Dali Xu, Raphael Stuhlmeier, Michael Stiassnie

School of Engineering, Computing and Mathematics

No abstract provided.

Go to article

Finite-Time Observer Based Guidance And Control Of Underactuated Surface Vehicles With Unknown Sideslip Angles And Disturbances, Ning Wang, Zhuo Sun, Jianchuan Yin, Shun Feng Su, Sanjay Sharma Jan 2018

Finite-Time Observer Based Guidance And Control Of Underactuated Surface Vehicles With Unknown Sideslip Angles And Disturbances, Ning Wang, Zhuo Sun, Jianchuan Yin, Shun Feng Su, Sanjay Sharma

School of Engineering, Computing and Mathematics

No abstract provided.

Go to article

Pseudo-Static Tests Of Terminal Stirrup-Confined Concrete-Filled Rectangular Steel Tubular Columns, Fa Xing Ding, Liang Luo, Liping Wang, Shanshan Cheng, Zhi Wu Yu Jan 2018

Pseudo-Static Tests Of Terminal Stirrup-Confined Concrete-Filled Rectangular Steel Tubular Columns, Fa Xing Ding, Liang Luo, Liping Wang, Shanshan Cheng, Zhi Wu Yu

School of Engineering, Computing and Mathematics

© 2017 Elsevier Ltd This paper mainly presents a pseudo-static test program on 12 terminal stirrup-confined square concrete-filled steel tube (SCFT) columns and 14 rectangular SCFT columns under constant axial pressure. The effects of various factors on the hysteretic behavior of specimens are investigated. These factors include with or without stirrups, height of terminal stirrup region, equivalent stirrup ratio, stirrup form, loading direction, height-length ratio (L/B), length-width ratio (B/D), axial compression ratio (n) and sliding support. The failure mode, strain ratio, hysteretic curve, skeleton curve, ultimate bearing capacity, ductility, stiffness degradation, energy dissipation, as well as the residual deformation of …

Go to article

Towards Bayesian-Based Trust Management For Insider Attacks In Healthcare Software-Defined Networks, W Meng, K-Kr Choo, S Furnell, Av Vasilakos, Cw Probst Jan 2018

Towards Bayesian-Based Trust Management For Insider Attacks In Healthcare Software-Defined Networks, W Meng, K-Kr Choo, S Furnell, Av Vasilakos, Cw Probst

School of Engineering, Computing and Mathematics

The medical industry is increasingly digitalized and Internet-connected (e.g., Internet of Medical Things), and when deployed in an Internet of Medical Things environment, software-defined networks (SDNs) allow the decoupling of network control from the data plane. There is no debate among security experts that the security of Internet-enabled medical devices is crucial, and an ongoing threat vector is insider attacks. In this paper, we focus on the identification of insider attacks in healthcare SDNs. Specifically, we survey stakeholders from 12 healthcare organizations (i.e., two hospitals and two clinics in Hong Kong, two hospitals and two clinics in Singapore, and two …

Go to article

Wec Design Based On Refined Mean Annual Energy Production For The Israeli Mediterranean Coast, Raphael Stuhlmeier, Dali Xu Jan 2018

Wec Design Based On Refined Mean Annual Energy Production For The Israeli Mediterranean Coast, Raphael Stuhlmeier, Dali Xu

School of Engineering, Computing and Mathematics

No abstract provided.

Go to article

The Extended Ramp Model: A Biomimetic Model Of Behaviour Arbitration For Lightweight Cognitive Architectures, Se Gaudl, Jj Bryson Jan 2018

The Extended Ramp Model: A Biomimetic Model Of Behaviour Arbitration For Lightweight Cognitive Architectures, Se Gaudl, Jj Bryson

School of Engineering, Computing and Mathematics

No abstract provided.

Go to article

Rapid Game Jams With Fluidic Games: A User Study & Design Methodology, Se Gaudl, Mj Nelson, S Colton, R Saunders, Ej Powley, Ferrer B Pérez, P Ivey, M Cook Jan 2018

Rapid Game Jams With Fluidic Games: A User Study & Design Methodology, Se Gaudl, Mj Nelson, S Colton, R Saunders, Ej Powley, Ferrer B Pérez, P Ivey, M Cook

School of Engineering, Computing and Mathematics

No abstract provided.

Go to article

Posh-Sharp: A Lightweight Toolkit For Creating Cognitive Agents, Se Gaudl Jan 2018

Posh-Sharp: A Lightweight Toolkit For Creating Cognitive Agents, Se Gaudl

School of Engineering, Computing and Mathematics

Agent design is an intricate process requiring skills from different disciplines. Thus experts in one domain are not necessarily experts in the others. Supporting the design of agents is important and needs to address varying skill and expertise as well as varying handling the design of complex agents. In this paper, a new agent design toolkit –POSH-SHARP– for intelligent virtual agents (IVAs) and cognitive embodied agents is presented. It was designed to address the need for a robust agent development framework in highly restrictive environments such as the web or smartphones while being useful to both novice and expert users. …

Go to article

Evaluation Of Heavy- And Medium-Duty On-Road Vehicle Emissions In California's South Coast Air Basin, Molly J. Haugen, Gary A. Bishop, Arvind Thiruvengadam, Daniel K. Carder Jan 2018

Evaluation Of Heavy- And Medium-Duty On-Road Vehicle Emissions In California's South Coast Air Basin, Molly J. Haugen, Gary A. Bishop, Arvind Thiruvengadam, Daniel K. Carder

Fuel Efficiency Automobile Test Publications

Emission measurements were collected from heavy-duty (HDVs) and medium-duty vehicles (MDVs) at the Peralta weigh station long-term measurement site near Anaheim, CA in 2017. Two Fuel Efficiency Automobile Test units sampled elevated and ground-level exhaust vehicles totaling 2,315 measurements. HDVs (1844 measurements) exhibited historical reductions in fuel specific oxides of nitrogen (NOx) from the 2008 measurements (55%) with increased use of exhaust gas recirculation and selective catalytic reduction systems. However, as these technologies have aged, the in-use benefits have declined. Infrared %opacity measurements of tailpipe soot decreased 14% since 2012 with increased diesel particulate filter (DPF) use, DPF …

Go to article

The Story Of Ever Diminishing Vehicle Tailpipe Emissions As Observed In The Chicago, Il Area, Gary A. Bishop, Molly J. Haugen Jan 2018

The Story Of Ever Diminishing Vehicle Tailpipe Emissions As Observed In The Chicago, Il Area, Gary A. Bishop, Molly J. Haugen

Fuel Efficiency Automobile Test Publications

The University of Denver has collected on-road fuel specific vehicle emissions measurements in the Chicago area since 1989. This nearly 30 year record illustrates the large reductions in light-duty vehicle tailpipe emissions and the remarkable improvements in emissions control durability to maintain low emissions over increasing periods of time. Since 1989 fuel specific carbon monoxide (CO) emissions have been reduced by an order of magnitude and hydrocarbon (HC) emissions by more than a factor of 20. Nitric oxide (NO) emissions have only been collected since 1997 but have seen reductions of 79%. This has increased the skewness of the emissions …

Go to article

Revisit Lynwood, Ca: On-Road Remote Sensing Of Automobile Emissions In The Lynwood, Ca: 2018, Gary A. Bishop Jan 2018

Revisit Lynwood, Ca: On-Road Remote Sensing Of Automobile Emissions In The Lynwood, Ca: 2018, Gary A. Bishop

Fuel Efficiency Automobile Test Publications

No abstract provided.

Go to article

Evaluation Of Emissions Benefits Of Federal Reformulated Gasoline Versus Conventional Gasoline, Gary A. Bishop, S. Kent Hoekman, Amber Broch Jan 2018

Evaluation Of Emissions Benefits Of Federal Reformulated Gasoline Versus Conventional Gasoline, Gary A. Bishop, S. Kent Hoekman, Amber Broch

Fuel Efficiency Automobile Test Publications

No abstract provided.

Go to article

Bayesian Operational Modal Analysis Of Offshore Rock Lighthouses For Shm, Jmw Brownjohn, Sk Au, X Wang, Z Zhu, A Raby, A Antonini Jan 2018

Bayesian Operational Modal Analysis Of Offshore Rock Lighthouses For Shm, Jmw Brownjohn, Sk Au, X Wang, Z Zhu, A Raby, A Antonini

School of Engineering, Computing and Mathematics

During 2016 and 2017 a program of field vibration measurements was made on a set of Victorian era granite lighthouse towers around the British Isles. The field tests were designed for structural identification to enable condition assessment and identification of extreme wave loads through long term monitoring. The primary test method was forced vibration, and ambient vibration measurements was used as a backup. The best operational modal analysis (OMA) results were obtained using Bayesian OMA, which provide a clear picture of the directionality of the mode shapes which appeared at very close frequencies due to the symmetry of the towers. …

Go to article

A Distributed Service Delivery Platform For Automotive Environments: Enhancing Communication Capabilities Of An M2m Service Platform For Automotive Application, Markus Glaab Jan 2018

A Distributed Service Delivery Platform For Automotive Environments: Enhancing Communication Capabilities Of An M2m Service Platform For Automotive Application, Markus Glaab

School of Engineering, Computing and Mathematics Theses

The automotive domain is changing. On the way to more convenient, safe, and efficient vehicles, the role of electronic controllers and particularly software has increased significantly for many years, and vehicles have become software-intensive systems. Furthermore, vehicles are connected to the Internet to enable Advanced Driver Assistance Systems and enhanced In-Vehicle Infotainment functionalities. This widens the automotive software and system landscape beyond the physical vehicle boundaries to presently include as well external backend servers in the cloud. Moreover, the connectivity facilitates new kinds of distributed functionalities, making the vehicle a part of an Intelligent Transportation System (ITS) and thus an …

Go to article

Automated Identification Of Digital Evidence Across Heterogeneous Data Resources, Hussam J Mohammed Jan 2018

Automated Identification Of Digital Evidence Across Heterogeneous Data Resources, Hussam J Mohammed

School of Engineering, Computing and Mathematics Theses

Digital forensics has become an increasingly important tool in the fight against cyber and computer-assisted crime. However, with an increasing range of technologies at people’s disposal, investigators find themselves having to process and analyse many systems with large volumes of data (e.g., PCs, laptops, tablets, and smartphones) within a single case. Unfortunately, current digital forensic tools operate in an isolated manner, investigating systems and applications individually. The heterogeneity and volume of evidence place time constraints and a significant burden on investigators. Examples of heterogeneity include applications such as messaging (e.g., iMessenger, Viber, Snapchat, and WhatsApp), web browsers (e.g., Firefox and …

Go to article

First Prev Next Last