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2018

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Thermo-Optic Tuning Of A Packaged Whispering Gallery Mode Resonator Filled With Nematic Liquid Crystal, Vishnu Kavungal, Gerald Farrell, Qiang Wu, Arun Mallik, Yuliya Semenova Jan 2018

Thermo-Optic Tuning Of A Packaged Whispering Gallery Mode Resonator Filled With Nematic Liquid Crystal, Vishnu Kavungal, Gerald Farrell, Qiang Wu, Arun Mallik, Yuliya Semenova

Articles

Thermo-optic tuning of whispering gallery modes (WGMs) in a nematic liquid crystal-filled thin-walled capillary tube resonator is reported. WGMs were excited by the evanescent field from a tapered optical fiber. Tapered optical fiber fabrication and reduction of wall thickness of the capillary tube was carried out by a ceramic micro-heater brushing technique. A simple and robust packaging technique is demonstrated to ensure stable and repeatable operation of the device. Tunability of WGMs with temperature was demonstrated with a sensitivity of 267.5 ± 2.5 pm/°C. The demonstrated thermo-optic method for WGMs tuning is potentially useful for many tunable photonic devices and …

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An Audience With International Regulators In The Manufacture Of Medicines 2018: Quality Risk Management (Qrm) And Knowledge Management (Km), Anne Greene (Editor), Kevin O'Donnell (Editor), Nuala Calnan (Editor) Jan 2018

An Audience With International Regulators In The Manufacture Of Medicines 2018: Quality Risk Management (Qrm) And Knowledge Management (Km), Anne Greene (Editor), Kevin O'Donnell (Editor), Nuala Calnan (Editor)

Books

A monograph based on a seminar organised by The School of Chemistry & Pharmaceutical Sciences, Dublin Institute of Technology, with Regulatory Science Ireland, and with The Health Products Regulatory Authority

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Bayesian Non-Parametric Conditional Copula Estimation Of Twin Data, L Dalla Valle, Fabrizio Leisen, Luca Rossini Jan 2018

Bayesian Non-Parametric Conditional Copula Estimation Of Twin Data, L Dalla Valle, Fabrizio Leisen, Luca Rossini

School of Engineering, Computing and Mathematics

No abstract provided.

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An Energy-Based Approach To Assess And Predict Erosive Airfoil Defouling, Arthur Rudek, Thomas-Alexander Zitzmann, Geral Russ, Barry Duignan Jan 2018

An Energy-Based Approach To Assess And Predict Erosive Airfoil Defouling, Arthur Rudek, Thomas-Alexander Zitzmann, Geral Russ, Barry Duignan

Articles

A dynamic indentation experiment is presented for assessment of the adhesive behavior of a range of coatings in erosive defouling of commercial aircraft engines using CO2 dry-ice. A series of experiments is presented in which particles made from a reference material (polyoxymethylene – POM) and from CO2 dry-ice are made to impact compressor airfoils under a range of impact angle and velocity conditions. The airfoils investigated are coated with an indicator material (PTFE), which is typically used to visualise the defouling effect in large scale compressor defouling experiments. In addition, fouled compressor airfoils taken from service and coated with a …

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Role Of Mtor In Autophagic And Lysosomal Reactions To Environmental Stressors In Molluscs, Susanna Sforzini, Michael N. Moore, Caterina Oliveri, Anna Volta, Awadhesh Jha, Mohamed Banni, Aldo Viarengo Jan 2018

Role Of Mtor In Autophagic And Lysosomal Reactions To Environmental Stressors In Molluscs, Susanna Sforzini, Michael N. Moore, Caterina Oliveri, Anna Volta, Awadhesh Jha, Mohamed Banni, Aldo Viarengo

School of Biological and Marine Sciences

No abstract provided.

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Discrete Triangulated Categories, Nathan Broomhead, David Pauksztello, David Ploog Jan 2018

Discrete Triangulated Categories, Nathan Broomhead, David Pauksztello, David Ploog

School of Engineering, Computing and Mathematics

We introduce and study several homological notions which generalise the discrete derived categories of D. Vossieck. As an application, we show that Vossieck discrete algebras have this property with respect to all bounded t-structures. We give many examples of triangulated categories regarding these notions.

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Copula Based Generalized Additive Models For Location, Scale And Shape With Non-Random Sample Selection, M Wojtys, Giampiero Marra, Rosalba Radice Jan 2018

Copula Based Generalized Additive Models For Location, Scale And Shape With Non-Random Sample Selection, M Wojtys, Giampiero Marra, Rosalba Radice

School of Engineering, Computing and Mathematics

No abstract provided.

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Friction Stir Welds In Aluminium: Design S-N Curves From Statistical Analysis Of Literature Data, E Maggiolini, D Benasciutti, L Susmel, Dg Hattingh, Mn James, R Tovo Jan 2018

Friction Stir Welds In Aluminium: Design S-N Curves From Statistical Analysis Of Literature Data, E Maggiolini, D Benasciutti, L Susmel, Dg Hattingh, Mn James, R Tovo

School of Engineering, Computing and Mathematics

© 2018 Wiley Publishing Ltd. Appropriate S-N fatigue design curves for friction stir welded joints in aluminium alloys are currently not specified in design codes and standards. The present paper is intended to assist in enabling standardised fatigue design for such joints, through a comprehensive statistical analysis of more than 500 individual sets of data gathered from published literature. These data are used to establish the usual design fatigue curves for welds that give a 97.7% survival probability with 95% confidence. Experimental fatigue data represent defect-free butt joints and include both flat plate and tubular joints between similar aluminium alloys …

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A Subword-Based Deep Learning Approach For Sentiment Analysis Of Political Tweets, M Pota, M Esposito, Ma Palomino, Gl Masala Jan 2018

A Subword-Based Deep Learning Approach For Sentiment Analysis Of Political Tweets, M Pota, M Esposito, Ma Palomino, Gl Masala

School of Engineering, Computing and Mathematics

No abstract provided.

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Investigation Of Effective Stress Intensity Factors During Overload Fatigue Cycles Using Photoelastic And Dic Techniques, Jm Vasco-Olmo, B Yang, Mn James, Fa Díaz Jan 2018

Investigation Of Effective Stress Intensity Factors During Overload Fatigue Cycles Using Photoelastic And Dic Techniques, Jm Vasco-Olmo, B Yang, Mn James, Fa Díaz

School of Engineering, Computing and Mathematics

© 2018 Elsevier Ltd This work uses DIC and photoelastic techniques to investigate the effect of single overload cycles applied during constant amplitude fatigue. Effective values of the range of stress intensity factor were calculated using the CJP model of crack tip stress and displacement fields, as this model considers both wake contact and compatibility-induced influences on the applied elastic field arising from the plastic enclave generated around a fatigue crack. Values of the effective stress intensity factor are related to the observed crack growth acceleration and retardation. In addition, the paper compares the CJP results with those obtained using …

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Residual Crashworthiness Of Cfrp Structures With Pre-Impact Damage – An Experimental And Numerical Study, Dongdong Chen, Guangyong Sun, Maozhou Meng, G Li, Q Li Jan 2018

Residual Crashworthiness Of Cfrp Structures With Pre-Impact Damage – An Experimental And Numerical Study, Dongdong Chen, Guangyong Sun, Maozhou Meng, G Li, Q Li

School of Engineering, Computing and Mathematics

This study investigated the effect of transverse pre-impact damage on the load bearing capacity and failure behavior of square carbon fiber reinforced plastic (CFRP) tubes for axial crushing. The CFRP tubes were impacted transversely in different levels of impact energies to generate initial damage, and then the specimens were further crushed axially to evaluate the relation between transverse impact energies/positions and the residual axial crashworthiness. A finite element (FE) model was also developed to simulate the complex damage behavior of the CFRP tubes under these two different loading processes, based upon the continuum damage model (CDM) with user-defined material subroutine …

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The Design And Evaluation Of A User-Centric Information Security Risk Assessment And Response Framework, Manal Alohali, Nathan Clarke, Steven Furnell Jan 2018

The Design And Evaluation Of A User-Centric Information Security Risk Assessment And Response Framework, Manal Alohali, Nathan Clarke, Steven Furnell

School of Engineering, Computing and Mathematics

No abstract provided.

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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.

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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 …

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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 …

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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 …

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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.

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Health Trainer-Led Motivational Intervention Plus Usual Care For People Under Community Supervision Compared With Usual Care Alone: A Study Protocol For A Parallel-Group Pilot Randomised Controlled Trial (Strengthen), Tom P. Thompson, Lynne Callaghan, Emma Hazeldine, Cath Quinn, Samantha Walker, Richard Byng, Gary Wallace, Siobhan Creanor, Colin Green, Annie Hawton, Jill Annison, Julia Sinclair, Jane Senior, Adrian H. Taylor Jan 2018

Health Trainer-Led Motivational Intervention Plus Usual Care For People Under Community Supervision Compared With Usual Care Alone: A Study Protocol For A Parallel-Group Pilot Randomised Controlled Trial (Strengthen), Tom P. Thompson, Lynne Callaghan, Emma Hazeldine, Cath Quinn, Samantha Walker, Richard Byng, Gary Wallace, Siobhan Creanor, Colin Green, Annie Hawton, Jill Annison, Julia Sinclair, Jane Senior, Adrian H. Taylor

Peninsula Medical School

IntroductionPeople with experience of the criminal justice system typically have worse physical and mental health, lower levels of mental well-being and have less healthy lifestyles than the general population. Health trainers have worked with offenders in the community to provide support for lifestyle change, enhance mental well-being and signpost to appropriate services. There has been no rigorous evaluation of the effectiveness and cost-effectiveness of providing such community support. This study aims to determine the feasibility and acceptability of conducting a randomised trial and delivering a health trainer intervention to people receiving community supervision in the UK.Methods and analysisA multicentre, parallel, …

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Obesity And Dental Caries In Young Children In Plymouth, United Kingdom: A Spatial Analysis, Martha Paisi, Elizabeth Kay, Irene Kaimi, Robert Witton, Robert Nelder, Costas Christophi, Debra Lapthorne Jan 2018

Obesity And Dental Caries In Young Children In Plymouth, United Kingdom: A Spatial Analysis, Martha Paisi, Elizabeth Kay, Irene Kaimi, Robert Witton, Robert Nelder, Costas Christophi, Debra Lapthorne

School of Nursing and Midwifery

No abstract provided.

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Clinical Chronobiology: A Timely Consideration In Critical Care Medicine, Helen Mckenna, Der Horst Gtj Van, Irwin Reiss, Daniel Martin Jan 2018

Clinical Chronobiology: A Timely Consideration In Critical Care Medicine, Helen Mckenna, Der Horst Gtj Van, Irwin Reiss, Daniel Martin

Peninsula Medical School

No abstract provided.

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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 …

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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 …

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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 …

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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. …

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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

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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.

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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.

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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 …

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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.

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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 …

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