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Displaying Results 101 - 125 of 10754 on page 5 of 431
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Cardiorespiratory effects of combining transcutaneous spinal stimulation and robot assisted walking: a case study.
(2016)
MAHONY, NICHOLAS
Cardiorespiratory effects of combining transcutaneous spinal stimulation and robot assisted walking: a case study.
(2016)
MAHONY, NICHOLAS
http://hdl.handle.net/2262/79989
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Non-enzymatic glucose oxidation at electrocatalytic metal oxide films
(2013)
LYONS, MICHAEL
Non-enzymatic glucose oxidation at electrocatalytic metal oxide films
(2013)
LYONS, MICHAEL
Abstract:
The electro-oxidation of glucose at nickel hydroxide films is discussed. These films can be electrodeposited using a simple potential multi-cycling procedure. The resulting films exhibit a nanostructured surface morphology. Cyclic voltammetry, rotating- disk electrode voltammetry and electrochemical impedance spectroscopy have been used to elucidate the kinetics and mechanism of the oxidation of glucose. NiOOH is shown to be the active form of the nickel hydroxide layer and the impedance data indicates significant surface adsorption at these sites. Furthermore, mass-transport-corrected Tafel slopes of ca. 40 and 60 mV/dec were observed at low and high potentials respectively identifying a change in rate-control with increasing potential. Finally, we show using amperometric techniques that this simple modified electrode possesses excellent sensitivity for the oxidation of glucose, displaying current increases of ca. 3.7 mA mM?1 cm?2 with a limit of detection of the o...
http://hdl.handle.net/2262/67563
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Dimensionally Stable Anodes (DSA) for Electrochemical Water Splitting: Redox Properties, OER Kinetics and Mechanism at RuO2/NiO modified electrodes in aqueous base
(2013)
LYONS, MICHAEL
Dimensionally Stable Anodes (DSA) for Electrochemical Water Splitting: Redox Properties, OER Kinetics and Mechanism at RuO2/NiO modified electrodes in aqueous base
(2013)
LYONS, MICHAEL
Abstract:
The RuO2/NiO electrode was found to be extremely effective as a water oxidation catalyst in alkaline conditions. Addition of 25 mol % of RuO2 to a NiO electrode lowered the oxygen evolution reaction (OER) overpotential by ca. 30 %. Based on kinetic data obtained we have proposed a mechanism for both RuO2 and NiO utilizing the surfaquo group concept which envisages water oxidation occurring at hydrated interlinked oxy-metal surface active groups.
http://hdl.handle.net/2262/67561
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HL7 Healthcare Information Management Using Aspect-Oriented Programming Computer-Based Medical Systems
(2009)
CLARKE, SIOBHAN; MUNNELLY, JENNIFER
HL7 Healthcare Information Management Using Aspect-Oriented Programming Computer-Based Medical Systems
(2009)
CLARKE, SIOBHAN; MUNNELLY, JENNIFER
Abstract:
Given the heterogeneity of healthcare software systems, data from each system is often incompatible inhibiting interoperability. To enable the sharing and exchange of healthcare information interoperability standards must be adhered to. Health Level Seven (HL7) is the international standards organisation that promotes and enforces the standardisation of electronic healthcare information to facilitate its exchange and management. Incorporating HL7 functionality into existing applications requires significant modification and intrusive extensions. Using Aspect- Oriented Programming (AOP), we can introduce HL7 functionality into existing applications without the requirement for refactoring or modification. HL7 data formatting affects multiple parts of an application and hence is a ?crosscutting concern?. These concerns which entwine with base functionality introduce complexity and reduce modularity. A second benefit of AOP is its advanced modularisation capabilities which are capable o...
http://hdl.handle.net/2262/36050
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Using Expert-Derived Aesthetic Attributes to Help Users in Browsing Image Databases
(2011)
CONLAN, OWEN; HAMPSON, CORMAC
Using Expert-Derived Aesthetic Attributes to Help Users in Browsing Image Databases
(2011)
CONLAN, OWEN; HAMPSON, CORMAC
Abstract:
Image repositories often contain a large amount of metadata about their content. However many resources, such as photographs, have inherent aesthetic qualities that can be difficult to describe in a semantically consistent and usable manner, yet would be highly valuable for users in exploring large image repositories, such as Flickr. Automatically augmenting existing metadata with expert perspectives has the potential to give users a consistent aesthetic vocabulary to search and explore such repositories. SARA (Semantic Attribute Reconciliation Architecture) is a system that supports users to leverage domain expertise while searching for items in a metadata-rich domain. X2Photo is a tool built on SARA?s functionality to enable image searching based on a picture?s aesthetic characteristics and user-generated tags. This paper describes X2Photo in detail, the approach to augmenting visual media with expertise, and the evaluation results which reveal how semantically described aesthetic...
http://hdl.handle.net/2262/59673
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A Combinatorial Optimisation Approach to the Design of Dual Parented Long-Reach Passive Optical Networks
(2011)
RUFFINI, MARCO; DOYLE, LINDA; PAYNE, DAVID
A Combinatorial Optimisation Approach to the Design of Dual Parented Long-Reach Passive Optical Networks
(2011)
RUFFINI, MARCO; DOYLE, LINDA; PAYNE, DAVID
Abstract:
We present an application focused on the design of resilient long-reach passive optical networks. We specifically consider dual-parented networks whereby each customer must be connected to two metro sites via local exchange sites. An important property of such a placement is resilience to single metro node failure. The objective of the application is to determine the optimal position of a set of metro nodes such that the total optical fibre length is minimized. We prove that this problem is NP-Complete. We present two alternative combinatorial optimisation approaches to finding an optimal metro node placement using: a mixed integer linear programming (MIP) formulation of the problem; and, a hybrid approach that uses clustering as a preprocessing step. We consider a detailed case-study based on a network for Ireland. The hybrid approach scales well and finds solutions that are close to optimal, with a runtime that is two orders-of-magnitude better than the MIP model.
http://hdl.handle.net/2262/59498
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23 things @ INULS 2009
(2009)
Mitchell, Lindsay; Rayson Ward, Julie; Keogh, Sinéad A.
23 things @ INULS 2009
(2009)
Mitchell, Lindsay; Rayson Ward, Julie; Keogh, Sinéad A.
Abstract:
This presentation gives an account of the 23 things project that ran in the Glucksman Library at University of Limerick.
http://hdl.handle.net/10344/2648
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Evaluation of a Domain-Aware Approach to User Model Interoperability
(2012)
O'CONNOR, ALEXANDER; WADE, VINCENT
Evaluation of a Domain-Aware Approach to User Model Interoperability
(2012)
O'CONNOR, ALEXANDER; WADE, VINCENT
http://hdl.handle.net/2262/67208
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A Combinatorial Optimisation Approach to the Design of Dual Parented Long-Reach Passive Optical Networks
(2011)
RUFFINI, MARCO; PAYNE, DAVID; DOYLE, LINDA
A Combinatorial Optimisation Approach to the Design of Dual Parented Long-Reach Passive Optical Networks
(2011)
RUFFINI, MARCO; PAYNE, DAVID; DOYLE, LINDA
Abstract:
We present an application focused on the design of resilient long-reach passive optical networks. We speci?cally consider dual parented networks whereby each customer must be connected to two metro sites via a local exchange sites. An important property of such a placement is resilience to single metro node failure. The objective of the application is to determine the optimal position of a set of metro-nodes such that the total optical ?bre length is minimised. We prove that the decision variant of this problem is NP-Complete. We present three alternative combinatorial optimisation approaches to ?nding an optimal metro node placement using: a mixed integer linear programming formulation of the problem; a hybrid approach that uses clustering as a preprocessing step; and, ?nally, a local search approach. We consider a detailed case-study based on a network for Ireland. The hybrid approach scales well and ?nds solutions that are close to optimal, with a runtime that is two orders-of-ma...
http://hdl.handle.net/2262/63929
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24-Hour Electrical Load Data - A Time Series or a Set of Independent Points?
(2001)
Fay, Damien; Ringwood, John; Condon, Marissa; Kelly, Michael
24-Hour Electrical Load Data - A Time Series or a Set of Independent Points?
(2001)
Fay, Damien; Ringwood, John; Condon, Marissa; Kelly, Michael
Abstract:
The paper investigates whether a time series or a set of independent points is a more appropriate description of 24-hour Irish electrical load data. A set of independent points means that the load at each hour of the day is independent from the load at any other hour. The data is first split into 24 series, one for each hour of the day i.e. a 1am 2am 3am series etc. These are called parallel series. The linear cross-correlation's of the parallel series are used to indicate independence. While the loads at 9am and 6pm to 8pm appear independent the remaining loads are highly inter-correlated. This suggests that 24-hour electrical load data has a dual nature. Two techniques are used to test this hypothesis. The first technique models each parallel series using neural networks. This technique is found to be computationally expensive. The second technique uses a hybrid technique called the Multi Time Scale (MTS) technique. This models 24-hour electrical load data as a time series th...
http://eprints.maynoothuniversity.ie/1967/
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Achieving real-time guarantees in mobile wireless ad hoc networks.
(2003)
CAHILL, VINNY
Achieving real-time guarantees in mobile wireless ad hoc networks.
(2003)
CAHILL, VINNY
Abstract:
Timely wireless communication is essential to allow real-time mobile applications, such as communication between mobile robots or inter-vehicle communication to be realized. The real-time event-based communication paradigm has been recognized as an appropriate highlevel communication scheme to connect autonomous components in large distributed control systems [1]. We investigate whether real-time event constraints can be guaranteed in a mobile ad hoc wireless network. In this work in progress paper we present our analysis of the impact of mobile ad hoc wireless networks on achieving real-time guarantees. We introduce our ongoing work on the use of a proactive routing and resource reservation protocol using mobility awareness and prediction to reduce the unpredictability of a dynamic mobile ad hoc wireless network.
http://hdl.handle.net/2262/32771
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Symbolic bisimulation for a higher-order distributed language with passivation (extended abstract)
(2013)
KOUTAVAS, VASILEIOS; HENNESSY, MATTHEW
Symbolic bisimulation for a higher-order distributed language with passivation (extended abstract)
(2013)
KOUTAVAS, VASILEIOS; HENNESSY, MATTHEW
Abstract:
We study the behavioural theory of a higher-order distributed calculus with private names and locations that can be passivated. For this language, we present a novel Labelled Transition System where higher-order inputs are symbolic agents that can perform a limited number of transitions, capturing the nature of passivation. Standard first-order weak bisimulation over this LTS coincides with contextual equivalence, and provides the first useful proof technique without a universal quantification over contexts for an intricate distributed language.
http://hdl.handle.net/2262/67852
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25Gb/s PAM4 adaptive receiver equalisation requirements for burst-mode transmission systems
(2016)
Dalla Santa, Marco; Antony, Cleitus; Talli, Giuseppe; Townsend, Paul D.
25Gb/s PAM4 adaptive receiver equalisation requirements for burst-mode transmission systems
(2016)
Dalla Santa, Marco; Antony, Cleitus; Talli, Giuseppe; Townsend, Paul D.
Abstract:
Requirements for burst-mode equalisation in a 25Gb/s PAM4 system for passive optical network upstream traffic are analysed for different linear equaliser solutions, with transmission over 40km of fibre. The impact of chromatic dispersion, transmitter bandwidth restriction and non-linearities is considered.
http://hdl.handle.net/10468/4923
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Implementation of a CDIO compliant syllabus in a large engineering programme
(2008)
KELLY, KEVIN; BENNETT, GARETH; LYONS, CHRISTOPHER
Implementation of a CDIO compliant syllabus in a large engineering programme
(2008)
KELLY, KEVIN; BENNETT, GARETH; LYONS, CHRISTOPHER
Abstract:
The role of the engineer in industry has evolved, with to day?s engineering businesses seeking engineers with abilities and attributes in two broad areas - te chnical understanding and enabling skills. Institutions within the engi neering community such as ABET, the RAE and members of the CDIO initiative have highlighted a need for new approaches to learning and teaching of engineering within our academic institutions. A common paradigm of engineer ing third level education sees a first year syllabus which introduces basic engineering sciences and mathem atics, proceeding in subsequent years through more applied science and discipline specific t echnologies, and culminating with a variety of ?capstone? courses and a substa ntial engineering project. In many cases the key engineering skills of synthesis, creativity, de sign and implementation are only r eally given full expression at this (late) stage. This paper reports on the implementation of a ne w project based ...
http://hdl.handle.net/2262/74310
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Surface Finish in Micro-drilling of PTFE
(2008)
KELLY, KEVIN; O'DONNELL, GARRET; BUCKLEY, CONOR
Surface Finish in Micro-drilling of PTFE
(2008)
KELLY, KEVIN; O'DONNELL, GARRET; BUCKLEY, CONOR
Abstract:
Surface finish of engineering components pl ays a key role in their functionality, particularly where the size of the geometric feat ures of the component decreases. This paper reports on such an application ? the drilling of micro-holes in PTFE during manufacture of molds for use in the bio-medical field. These mo lds are used for production of silicone scaffolds requiring very large aspect ratios ? typical exam ples being to produce pillars/columns of 300 micron diameter and 15 mm length. The surface fi nish of the holes machined in the PTFE becomes critical in order to facilitate extractio n of the silicone from th e mold without damage. A systematic approach is used to determine th e optimum combination of machining parameters with respect to this goal. Furthermore, a novel approach to surface quality estimation is proposed. Direct methods of surface quality assessment in this a pplication are difficult due to the scale of the holes ? conventional measuremen t method...
http://hdl.handle.net/2262/74309
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Building support for cloud computing in the Irish construction industry
(2010)
WEST, ROGER PLUMER
Building support for cloud computing in the Irish construction industry
(2010)
WEST, ROGER PLUMER
Abstract:
The construction industry has been traditionally recognised as a fragmented sector associated with a poor level of implementation and penetration of Information Communication Technology (ICT) by Small to Medium Size Enterprises (SMEs). Cloud computing is a collective term that can facilitate the ability to collaborate within a central repository that can act as a base for interoperability between various construction disciplines and their software applications. Cloud computing is a new layer of internet architecture that creates an open opportunity to add better functionality to an increasingly global network. The characteristics of cloud computing, such as, shared infrastructure, on-demand applications, elasticity and consumption-based pricing, allows all disciplines in the sector to benefit. This paper will present the findings of a survey carried out by the Construction IT Alliance (CITA) in Ireland, as to the drivers, barriers and preferred procurement options for delivery of cl...
http://hdl.handle.net/2262/49614
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LEGO MINDSTORMS AS A TEACHING TOOL IN ENGINEERING EDUCATION
(2010)
KELLY, KEVIN
LEGO MINDSTORMS AS A TEACHING TOOL IN ENGINEERING EDUCATION
(2010)
KELLY, KEVIN
Abstract:
The primary purpose of this paper is the development of an active-learning, constructivist coursework plan, adhering to the Conceive Design Implement Operate (CDIO) initiative, for integration with the standard second level school syllabus. Initial investigation was executed through questionnaire research within multiple environments, and with students of varying ages from numerous educational backgrounds. Based on the results, the initial plans for a Transition Year coursework syllabus were developed. The potential assignment designs were initially tested within a classroom environment of twenty students of the Centre for Talented Youth in Ireland (CTYI). The finalized coursework was then executed within a Transition Year class of Santa Sabina, Sutton, and the functionality of the course plan continuously monitored in order to refine the syllabus. The secondary objective of the development of a demonstration model suitable for use at college open days and presentations for primary...
http://hdl.handle.net/2262/63815
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Analysis of the joint kinematics of the 5 iron golf swing
(2009)
HAAHR, MADS
Analysis of the joint kinematics of the 5 iron golf swing
(2009)
HAAHR, MADS
Abstract:
The purpose of this study was to identify the performance determining factors of the 5-iron golf swing. Joint kinematics were obtained from thirty male golfers using a twelve camera motion analysis system. Participants were divided into two groups, based on their ball launch speed (high vs. low). Those in the high ball speed group were deemed to be the more skillful group. Statistical analysis was used to identify the variables which differed significantly between the two groups, and could therefore be classified as the performance determining factors. The following factors were important to performance success: (i) the ability of the golfer to maintain a large X Factor angle and generate large X Factor angular velocity throughout the downswing, (ii) maintain the left arm as straight as possible throughout the swing, (iii) utilise greater movement of the hips in the direction of the target and a greater extension of the right hip during the downswing and (iv) greater flexion of both...
http://hdl.handle.net/2262/36130
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DEVELOPMENT OF AN AUTONOMOUS ROBOTIC HAND WITH HUMAN INTERACTION CAPABILITIES
(2012)
KELLY, KEVIN
DEVELOPMENT OF AN AUTONOMOUS ROBOTIC HAND WITH HUMAN INTERACTION CAPABILITIES
(2012)
KELLY, KEVIN
Abstract:
A multiple degree-of-freedom hand has been developed which can interact with a human on a fundamental level. Th e robotic hand is closely modelled on a human hand, consisting of four fingers a nd a thumb. The digits are actuated using five servo motors to provide independen t motion and control. The robotic hand uses a webcam and artificial intelligence to detect and process a user?s hand position. This human interaction capab ility has allowed the robotic hand to perform simple operations such as playin g a human in a game of rock paper scissors. The latter has been showcased at a number of events to promote engineering as a career choice. Basic artificial intelligence has been inte grated into the system to allow the robotic hand to process and react to a video input stream. This has been used to allow the hand to make a more inform ed choice based on the current scenario. Potential future applications of the r obotic hand in manufacturing are explored. KEYWORDS:
http://hdl.handle.net/2262/74307
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PREDICTION OF ENGINEERING STUDENT PROGRESSION FROM ENTRANCE DATA
(2012)
KELLY, KEVIN
PREDICTION OF ENGINEERING STUDENT PROGRESSION FROM ENTRANCE DATA
(2012)
KELLY, KEVIN
Abstract:
Most Western economies are suffering from problems in attracting students to study Science, Engineering and T echnology courses at university level. Concurrently, engineering programmes te nd to have higher dropout rates than courses in humanities, business or health sciences. They also typically have a higher unit cost per student. Many reasons have been suggested in the literature why the retention rates are lower in such programmes. However little data exists in the Irish context for what information is useful in identifying which factors are predictive of retention and to what degr ee they influence retention probability. What information is available, typically considers single factors (e.g. mathematical attainment, overall grades, English attainment etc), but does not consider any interaction effects. The work reported in this paper examines entrance data for approximately 22,000 students in Trinity College over a 10 year period. Those variables which are pre...
http://hdl.handle.net/2262/74304
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2LIP: Filling the Gap between the Current and the Three-Dimensional Web
(2010)
Jankowski, Jacek; Decker, Stefan
2LIP: Filling the Gap between the Current and the Three-Dimensional Web
(2010)
Jankowski, Jacek; Decker, Stefan
Abstract:
In this article we present a novel approach, the 2-Layer Interface Paradigm (2LIP), for designing simple yet interactive 3D web applications, an attempt to marry advantages of 3D experience with the advantages of the narrative structure of hypertext. The hyper-text information, together with graphics, and multimedia, is presented semi-transparently on the foreground layer. It overlays the 3D representation of the information displayed in the background f the interface. Hyperlinks are used for navigation in the 3D scenes(in both layers).We introduce a reference implementation of 2LIP: Copernicus - The Virtual 3D Encyclopedia, which can become a model for building 3D Wikipedia. Based on the evaluation of Copernicus we show that designing web interfaces according to 2LIP provides users with a better experience during browsing the Web, has a positive effect on the visual and associative memory, improves spatial cognition of presented information, and increases overall user's satisf...
http://hdl.handle.net/10379/1090
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2nd Congress on Paediatric Palliative Care,
(2014)
NICHOLL, HONOR
2nd Congress on Paediatric Palliative Care,
(2014)
NICHOLL, HONOR
http://hdl.handle.net/2262/73216
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Security considerations in space and delay tolerant networks
(2006)
CAHILL, VINNY; FARRELL, STEPHEN
Security considerations in space and delay tolerant networks
(2006)
CAHILL, VINNY; FARRELL, STEPHEN
Abstract:
This paper reviews the Internet-inspired security work on delay tolerant networking, in particular, as it might apply to space missions, and identifies some challenges arising, for both the Internet security community and for space missions. These challenges include the development of key management schemes suited for space missions as well as a characterization of the actual security requirements applying. A specific goal of this paper is therefore to elicit feedback from space mission IT specialists in order to guide the development of security mechanisms for delay tolerant networking
http://hdl.handle.net/2262/16524
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CULTURA: Supporting Enhanced Exploration of Cultural Archives through Personalisation
(2012)
LAWLESS, SEAMUS; HAMPSON, CORMAC; O'CONNOR, ALEXANDER; CONLAN, OWEN; WADE, VINCENT...
CULTURA: Supporting Enhanced Exploration of Cultural Archives through Personalisation
(2012)
LAWLESS, SEAMUS; HAMPSON, CORMAC; O'CONNOR, ALEXANDER; CONLAN, OWEN; WADE, VINCENT PATRICK
http://hdl.handle.net/2262/67053
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Towards real-time event-based communication in mobile ad hoc wireless networks.
(2003)
CAHILL, VINNY
Towards real-time event-based communication in mobile ad hoc wireless networks.
(2003)
CAHILL, VINNY
Abstract:
Most previous work on real-time event-based communication has assumed infrastructure-based networks. The underlying assumption of this work is that application components are stationary and that a fixed network infrastructure exists to facilitate communication between them [1]. Ad hoc wireless networks comprise sets of mobile nodes connected by wireless links that form arbitrary wireless network topologies without the use of any centralized access point. Ad hoc wireless networks are inherently self-creating, selforganizing and self-administering [2]. Such highly mobile, dynamic networks do not satisfy the design assumptions for previous real-time event-based communication.
http://hdl.handle.net/2262/32786
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