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Articles 7891 - 7920 of 9166
Full-Text Articles in Entire DC Network
An Electro-Oculogram Based System For Communication And Control Using Target Position Variation, Ronan Fitzmaurice, Ted Burke, Annraoi De Paor
An Electro-Oculogram Based System For Communication And Control Using Target Position Variation, Ronan Fitzmaurice, Ted Burke, Annraoi De Paor
Conference Papers
In this paper we describe a novel mode of human computer interaction based on gaze tracking using the electro-oculogram (EOG). Despite the relative simplicity of recording this signal, it is often discounted as a reliable method of gaze tracking because of problems arising from changing sensitivity and DC drift. We describe an original technique, Target Position Variation (TPV), which addresses this issue by presenting moving icons which, when followed with the eye, create a corresponding pattern in the EOG signal which can be used to infer the correct gaze position and to compensate for variations in sensitivity.
Onset Detection Using Comb Filters, Mikel Gainza, Bob Lawlor, Eugene Coyle
Onset Detection Using Comb Filters, Mikel Gainza, Bob Lawlor, Eugene Coyle
Conference papers
A technique for detecting note onsets using FIR comb filters which have different filter delays is presented. The proposed onset detector focuses on the inharmonic characteristics of the onset component and the energy increases of the signal. Both properties are combined by utilising FIR comb filters on a frame by frame basis in order to obtain an onset detection functions, which is suitable for detecting slow onsets. The proposed approach improves upon existing methods in terms of the percentage of correct detections in signal processing.
Irish Journalist’S Attitudes Towards, And Use Of, Internet Technology, Edward Brennan
Irish Journalist’S Attitudes Towards, And Use Of, Internet Technology, Edward Brennan
Conference Papers
This paper explores the effects of Internet technology on the occupational culture and work practices of Irish journalists. There is a common view that the Internet, as an alternative source for news is challenging professional journalists. Increasingly amateurs may produce and disseminate stories to a potentially global readership. This paper presents results from a qualitative pilot study exploring Irish journalist’s reactions to this perceived threat. It reveals that the economic, social and legal features of the Irish journalistic field greatly mitigate any potential threat from the Internet. The research did reveal, however, that the Internet may have some unforeseen and …
Innovation, Vol. 2, Issue 3, January, 2005, Unknown
A New Architecture For A Multi Polarized Perpendicularly-Fed Radiating Element, Naftali Herscovici, Francisco Lerma, Max Ammann
A New Architecture For A Multi Polarized Perpendicularly-Fed Radiating Element, Naftali Herscovici, Francisco Lerma, Max Ammann
Conference papers
Planar printed antennas are often required to be fed by parallel feed-networks, which, when printed on the same substrate as the radiating elements, create mutual coupling, spurious radiation and excite surface waves. This considerably affects the array efficiency. Numerous architectures were proposed in the past; some of them use the multilayer structure (which by itself exhibits low efficiency), or perpendicularly fed structures. The latter consist of a substrate for the radiating element and another substrate which for the feed-network. The paper reviews some of the basic configurations proposed until now, and shows the specific improvements introduced by the proposed architecture.
Imagine Ahead, Plan Backwards: Prospective Methodology In Urban And Regional Planning, Elzbieta Krawczyk, John Ratcliffe
Imagine Ahead, Plan Backwards: Prospective Methodology In Urban And Regional Planning, Elzbieta Krawczyk, John Ratcliffe
Articles
No abstract provided.
Why You Need To Think Supply Chain Management, Edward Sweeney, Randal Faulkner
Why You Need To Think Supply Chain Management, Edward Sweeney, Randal Faulkner
Other Resources
No abstract provided.
Adequacy Assessment Of The Irish Generation System Including Wind Capacity, William Carr
Adequacy Assessment Of The Irish Generation System Including Wind Capacity, William Carr
Masters
Adequacy assessment of generation capacity is a statistical measure of the ability of existing or planned generation plant to meet predicted levels of electrical demand. Complications arise in this calculation because at any point in time the exact level of capacity available is variable due to planned and forced outages. Planned outrages is a term used to describe the period during the year when a generation unit is required to be shut down for maintenance work to be carried out. The duration of this outrage is normally known and its timing can be chosen. Forced outages describe the random failure …
Lifelong Learning: Romance, Evidence, Implementation?, Anne Murphy
Lifelong Learning: Romance, Evidence, Implementation?, Anne Murphy
Papers, presentations and other resources
This paper asks if there is evidence that implementation of a lifelong learning agenda in Ireland has progressed in the decade since the 1995 European Year of Lifelong Learning. It tries to answer the question by analysis of over forty documents related to lifelong learning produced since 1984. It concludes that while there is now much research-based knowledge and much convergence of opinion and policy on the main themes to be addressed, there has been indifferent progress and that persistent challenges remain.
Simple Electronic Speckle Pattern Shearing Interferometer With A Holographic Grating As A Shearing Element, Emilia Mihaylova, Izabela Naydenova, Suzanne Martin, Vincent Toal
Simple Electronic Speckle Pattern Shearing Interferometer With A Holographic Grating As A Shearing Element, Emilia Mihaylova, Izabela Naydenova, Suzanne Martin, Vincent Toal
Conference Papers
An optical set-up for electronic speckle pattern shearing interferometry (ESPSI) using a photopolymer diffractive optical element as a shearing element, is presented. A laser beam illuminates the object at an angle to the normal to the object surface. The holographic diffraction grating is placed in front of the object. The zero and the first order of diffraction form the image and the sheared image of the object. The images are imaged onto the CCD camera, whose optical axis coincides with the normal to the object surface. The field of view is limited only by the dimensions of the photopolymer plate. …
Institutional Mission Vs. Policy Constraint?: Unlocking Potential, Ellen Hazelkorn
Institutional Mission Vs. Policy Constraint?: Unlocking Potential, Ellen Hazelkorn
Articles
The research-intensive and competitive knowledge society is putting HEIs (higher education institutions) under the spotlight. While many HEIs around the world do not proclaim or wish to be research-intensive institutions the majority desire to intensify their research activity because it is seen as a sine qua non of higher education. Accordingly, HEIs are busy making critical strategic choices concerning human resources, the research environment, the teaching-research nexus, organisational and management structure, and funding. Governments are also making choices, using policies and financial instruments to help shape institutional mission, priorities and HE systems. But if governments genuinely desire to widen access …
Theoretical And Experimental Investigations Of Macro-Bend Losses For Standard Single Mode Fibers, Qian Wang, Gerald Farrell, Thomas Feir
Theoretical And Experimental Investigations Of Macro-Bend Losses For Standard Single Mode Fibers, Qian Wang, Gerald Farrell, Thomas Feir
Articles
Modeling of macro-bend losses for single mode fibers with multiple cladding or coating layers is presented. Macro-bend losses for standard single mode fibers (SMF28) are investigated theoretically and experimentally, showing that the inner primary coating layer of SMF28 has a significant impact on the bend losses and most of the radiation field is absorbed in the inner primary coating layer of SMF28. The agreement between theoretical calculations and experimental measurements suggests that the so-called elastooptical correction in modeling is not required for SMF28.
Trioson: A Graphical User Interface For Pattern Sonification, Charlie Cullen, Eugene Coyle
Trioson: A Graphical User Interface For Pattern Sonification, Charlie Cullen, Eugene Coyle
Conference papers
The TrioSon software allows users to map musical patterns to input data variables via a graphical user interface (GUI). The application is a Java routine designed to take input files of standard Comma Separated Values (CSV) format and output Standard Midi Files (SMF) using the internal Java Sound API. TrioSon renders output Sonifications from input data files for up to 3 user-defined parameters, allocated as bass, chord and melody instruments for the purposes of arrangement. In this manner each parameter concerned is distinguished by its individual instrumental timbre, with the option of rendering any combination of 1 to 3 parameters …
Use Of Advanced Synthesis Tools In Teaching Vlsi Design, Kevin Berwick, Dominic Nardone
Use Of Advanced Synthesis Tools In Teaching Vlsi Design, Kevin Berwick, Dominic Nardone
Articles
No abstract provided.
B2b E-Marketplaces In The Airline Industry: Process Drivers And Performance Indicators, Claudia-Maria Wagner, Bernd Huber, Edward Sweeney, Austin Smyth
B2b E-Marketplaces In The Airline Industry: Process Drivers And Performance Indicators, Claudia-Maria Wagner, Bernd Huber, Edward Sweeney, Austin Smyth
Articles
Competitive pressures are increasing within and between different strategically oriented groups of airlines. This paper focuses on the level of efficiency improvements gained by using e-Marketplaces in the procurement process. Findings from a survey among 88 international airlines reveal that the use of Business-to-Business (B2B) e-Marketplaces does play different roles across the various airline groupings. Airlines that are involved in strategic alliances show higher joint procurement activities than airlines that are not involved in strategic alliances. However, alliances are probably viewed as loose arrangements and thus airlines may be reluctant to share information on procurement prices and processes with another …
Competative Challenges:Chain Reactions:An Analysis Of Supply Chain Management And Competitive Solutions For The Island Of Ireland, Austin Smith, Bernd Huber
Competative Challenges:Chain Reactions:An Analysis Of Supply Chain Management And Competitive Solutions For The Island Of Ireland, Austin Smith, Bernd Huber
Reports
No abstract provided.
Evaluating The Impact Of Production Scheduling On Tool Performance, Amr Arisha, Paul Young
Evaluating The Impact Of Production Scheduling On Tool Performance, Amr Arisha, Paul Young
Conference papers
Scheduling of a semiconductor manufacturing facility is one of the most complex tasks encountered. Confronted with a high technology product market, semiconductor manufacturing is increasingly more dynamic and competitive in the introduction of new products in shorter time intervals. Simulation provides an effective decision support tool in scheduling of semiconductor manufacturing. Simulation model was developed as a risk assessment tool for one of the implant process area. The model examines the impact of production schedule on tool performance by testing different production scenarios. Production ramping, local buffer capacity, product sequence and product mix seem to be influential factors of the …
Comparison Of Signal Reconstruction Methods For The Azimuth Discrimination And Resynthesis Algorithm, Dan Barry, Robert Lawlor, Eugene Coyle
Comparison Of Signal Reconstruction Methods For The Azimuth Discrimination And Resynthesis Algorithm, Dan Barry, Robert Lawlor, Eugene Coyle
Conference papers
The Azimuth Discrimination and Resynthesis algorithm (ADRess) has been shown to produce high quality sound source separation results for intensity panned stereo recordings. There are however, artifacts such as phasiness which become apparent in the separated signals under certain conditions. This is largely due to the fact that only the magnitude spectra for the separated sources are estimated. Each source is then resynthesised using the phase information obtained from the original mixture. This paper describes the nature and origin of the associated artifacts and proposes alternative techniques for resynthesising the separated signals. A comparison of each technque is then presented.
Multi-Channel Audio Time-Scale Modification, David Dorran, Robert Lawlor, Eugene Coyle
Multi-Channel Audio Time-Scale Modification, David Dorran, Robert Lawlor, Eugene Coyle
Conference papers
Phase vecoder based approaches to audio time-scale modification introduce a reverberant artefact into the time scaled output. Recent techniques have been developed to reduce the presence of this artefact; however, these techniques have the effect of introducing additional issues relating to their application to multi-channel recordings. This paper addresses these issues by collectively analysing all channels prior to time-scaling each individual channel.
Maintaining A Balance At Undergraduate Degree Level In The Teaching Of Automation And Classical Control Systems, Eugene Coyle, Aidan O'Dwyer
Maintaining A Balance At Undergraduate Degree Level In The Teaching Of Automation And Classical Control Systems, Eugene Coyle, Aidan O'Dwyer
Conference papers
Advances in the past decade in the development and application of Programmable Logic Controllers (PLCs) and Automation Systems in both high technology industrial plants and in the more mainstream manufacturing sectors, has heightened the importance of ensuring that undergraduate degree programme syllabi are designed to adequately cater for the teaching and training of students in automation. Prior to this growth in automation, delivered syllabi in Control Systems on most Electrical Engineering programmes had a theoretical rigour, reflecting the mathematical nature of the topic. A major challenge currently facing departmental lecturing staff and programme coordinators is that of the design of …
Information Delivery On Mobile Devices Using Boolean Sonification Patterns, Charlie Cullen, Eugene Coyle
Information Delivery On Mobile Devices Using Boolean Sonification Patterns, Charlie Cullen, Eugene Coyle
Conference papers
Sonification is the means by which non-speech audio can be used to convey information. Existing work has produced methods for delivering information in a wide range of fields, and recent work has considered the huge potential of mobile devices for Sonification. Boolean Sonification is a method of defining two related musical patterns as boolean conditions (true/false, yes/no etc.), such that one is considered contrary to the other by the listener. The final pattern set ideally comprises of two musical events that are closely enough related as to be considered a group, yet distinct enough to be perceived as separate entities. …
Adaptive Voip Playout Scheduling: Assessing User Satisfaction, Miroslaw Narbutt, Andrew Kelly, Liam Murphy, Philip Perry
Adaptive Voip Playout Scheduling: Assessing User Satisfaction, Miroslaw Narbutt, Andrew Kelly, Liam Murphy, Philip Perry
Articles
Delay and packet loss dramatically affect the quality of a voice-over-IP (VoIP) call and depend on the playout buffer scheme implemented at the receiver. The choice of playout algorithm can’t be based on statistical metrics without considering the perceived end-to-end conversational speech quality. The authors present a method for evaluating various playout algorithms that extends the Emodel concept by estimating user satisfaction from time-varying transmission impairments. This article evaluates several playout algorithms and shows a correspondence between their results and those obtained via statistical loss and delay metrics.
A Novel Framework For Radio Resource Management In Ieee 802.11 Wireless Lans, Mark Davis, Tristan Raimondi
A Novel Framework For Radio Resource Management In Ieee 802.11 Wireless Lans, Mark Davis, Tristan Raimondi
Conference papers
In this paper we address the need to characterize and quantify resource usage in IEEE 802.11 WLANs in order to support radio resource management. We present a compact and intuitive framework for performance characterization and resource utilization that is based upon the concept of MAC bandwidth components. These MAC bandwidth components are directly related to the transmission rate and serve to quantify the resource requirements associated with accessing the wireless medium. We also introduce a graphical technique for presenting these MAC bandwidth components that illustrates how WLAN stations interact in contending for access to the wireless medium. We demonstrate the …
Simulation In Semiconductor Manufacturing Facilities, Amr Arisha, Paul Young
Simulation In Semiconductor Manufacturing Facilities, Amr Arisha, Paul Young
Conference papers
Semiconductor manufacturing is one of the most complex industries in terms of technology and manufacturing procedure. The life cycle of a semiconductor facility (FAB) has many phases, in their life cycle including capacity planning, new products introduction, variation of products/technologies, and decline phase. The complexity of the manufacturing and the external forces from markets and technology growth make predicting the effects of changes in the manufacturing system problematic. Simulation, if used correctly, is a powerful hands-on tool which may be used to give a better insight of the effect of engineering/management decisions on the performance of the manufacturing system. While …
Predict And Provide Vs Explore, Envision And Plan: Transforming The Urban Planning Approach Towards The Future, Elzbieta Krawczyk, John Ratcliffe
Predict And Provide Vs Explore, Envision And Plan: Transforming The Urban Planning Approach Towards The Future, Elzbieta Krawczyk, John Ratcliffe
Articles
Thinking about the future of humanity cannot be separated from thinking about the future of cities. Today, half of the world’s population lives in cities and the number of urban dwellers is constantly growing. On one hand, cities play a key role in generating economic growth; they are cores of human activity and frontiers of technological and cultural progress. On the other, urban areas are a source of a broad range of social and environmental problems and are especially vulnerable to the threats posed by factors such as climate change, terrorism, pandemic, social and cultural clashes. Considering the role and …
Imagine Lincoln 2020, The Futures Academy
Vibrational Coupling In Conjugated Π Systems With A View To Optimization Of Fluorescence Yield Through Phonon Confinement, Luke O'Neill, Patrick Lynch, Mary Mcnamara, Hugh Byrne
Vibrational Coupling In Conjugated Π Systems With A View To Optimization Of Fluorescence Yield Through Phonon Confinement, Luke O'Neill, Patrick Lynch, Mary Mcnamara, Hugh Byrne
Conference papers
A series of π conjugated systems were studied by absorption, photoluminescence and vibrational spectroscopy. As is common for these systems, a linear relationship between the positioning of the absorption and photoluminescence maxima plotted against inverse conjugation length is observed. The relationships are in good agreement with the simple particle in a box method, one of the earliest descriptions of the properties of one-dimensional organic molecules. In addition to the electronic transition energies, it was observed that the Stokes shift also exhibited a well-defined relationship with increasing conjugation length, implying a correlation between the electron-vibrational coupling and chain length. This correlation …
E-Procurement In The Aviation Industry: Value Creation Potential Of B2b Emarketplaces, Claudia-Maria Wagner, Bernd Huber, Edward Sweeney, Austin Smyth
E-Procurement In The Aviation Industry: Value Creation Potential Of B2b Emarketplaces, Claudia-Maria Wagner, Bernd Huber, Edward Sweeney, Austin Smyth
Articles
In academic literature, only limited research has been undertaken in exploring the value creation of B2B (Business-to-Business) e-Marketplace models in the aviation industry. The aim of this publication is a theoretical analysis to explore whether or not B2B e-Marketplaces can make a contribution to the achievement of competitive advantage in procurement in the aviation industry. The research focuses on the potential of B2B e-Marketplaces in terms of improving an airline’s competitiveness in its procurement value chain and discusses empirical results from a survey among international e-Marketplace / portal operators
Scm's Vital Role In B2b, Edward Sweeney
Design Of A Wireless System For Patient-Hospital Communication And Result Validation In Point Of Care Testing, John Mcgrory, Owen Lynch, Eugene Coyle
Design Of A Wireless System For Patient-Hospital Communication And Result Validation In Point Of Care Testing, John Mcgrory, Owen Lynch, Eugene Coyle
Conference Papers
This paper discuses mobile phone (cell phone) and wireless applications for linking patients who manage their healthcare outside the hospital using Point of Care Testing (POCT) to hospital information systems (HIS). Certain medical conditions require patients to manage their healthcare by performing on themselves POC testing and act faithfully on the result. This raises quality control issue, as these POC samples and testing procedures are not independently overseen by professional hospital staff. In hospitals, samples taken by clinicians are validated by hi-tech computerised validation systems to ensure plausibility, before physicians rely on them. Patients in the home must often use …