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Technological University Dublin

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Crash Analysis: An Investigation Of Current Speed Estimation Techniques, Robert Rice Jan 2004

Crash Analysis: An Investigation Of Current Speed Estimation Techniques, Robert Rice

Masters

The increasing number of cars and collisions on the roads of Europe ensure that the need for accurate speed estimation is an ever-more pressing requirement. This requirement has provided the motivation for an investigation into the accuracy and reliability of existing crash models An in-depth literature review was undertaken to create a greater understanding of the structural collapse behaviour of vehicles during full frontal collisions. It was decided to concentrate the work on frontal collisions as this type of accident makes up the majority of road accidents. This review underlined some of the phenomena that need to be considered when …

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Software Quality Strategic Driver Model (Sq-Sdm 11), Ronan Fitzpatrick Jan 2004

Software Quality Strategic Driver Model (Sq-Sdm 11), Ronan Fitzpatrick

Other resources

No abstract provided.

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Openmvc: A Non-Proprietary Component-Based Framework For Web Applications, Ronan Barrett, Sarah Jane Delany Jan 2004

Openmvc: A Non-Proprietary Component-Based Framework For Web Applications, Ronan Barrett, Sarah Jane Delany

Conference papers

No abstract provided.

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Architectural Registration And It's Diversity Vortex., Shannon Chance Jan 2004

Architectural Registration And It's Diversity Vortex., Shannon Chance

Articles

Architects: take a serious look at your demographics. While other professions are making strides to represent the diversity of America's population, yours lags markedly behind. Most U.S. architecture schools began admitting women and minorities between 1965 and 1972, but many who completed architecture degrees in the interim haven't yet received professional licensure. The ranks of licensed architects remain mainly white and mainly male, which denies society fair representation in shaping the built environment. Consider that African-American females comprise roughly 7% of the U.S. population but less than 0.2% of licensed architects; they've achieved proportionally higher success in law, medicine, and …

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Investigation Of Four-Wheel Steering Algorithms For A Formula Sae Car, Colm O'Kane, Sean Timoney Jan 2004

Investigation Of Four-Wheel Steering Algorithms For A Formula Sae Car, Colm O'Kane, Sean Timoney

Conference Papers

An algorithm was developed for a speed-dependent four-wheel steering system for a Formula SAE car. A linear bicycle model was implemented using the MATLAB and SIMULINK software packages. Various control laws were investigated for the rear steer angle with the objective of reducing the sideslip angle. A full 3D model of the vehicle incorporating weight transfer and tire non-linearity was then developed using the DADS software. An algorithm developed using the linear model with the aim of reducing vehicle sideslip angle was implemented in the nonlinear model. It is shown that this algorithm can improve the dynamic performance for both …

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Development Of A Numerical Model To Simulate Pressure Distributions In Ultrasound Angioplasty, Graham Gavin, Garrett Mcguinness, Finbar Dolan, M.S. Hashmi Jan 2004

Development Of A Numerical Model To Simulate Pressure Distributions In Ultrasound Angioplasty, Graham Gavin, Garrett Mcguinness, Finbar Dolan, M.S. Hashmi

Conference Papers

Ultrasound Angioplasty has been shown to be effective in the removal and re-canalising of blockages in arteries (Siegel RJ, 1993). The ultrasound is delivered via a wire waveguide to the lesion location. The wire, generally, has a ball-tip at the distal end to increase transmission of the ultrasound to the surrounding fluid by causing the ball-tip to oscillate between 20– 45kHz and with displacements of up to 100mm peak-to-peak (Atar, 1999 and Yock, 1997). Pressure waves, micro streaming, cavitation and direct contact with the oscillating ball-tip affect the blockage. Most work to date has concentrated on a spherical ball-tip geometry …

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An Investigation Of The Relationship Between In-Vitro And In-Vivo Ultrasound Image Quality Parameters, Jacinta Browne, Amanda Watson, Cathy Muir, Peter Hoskins, Alex Elliott Jan 2004

An Investigation Of The Relationship Between In-Vitro And In-Vivo Ultrasound Image Quality Parameters, Jacinta Browne, Amanda Watson, Cathy Muir, Peter Hoskins, Alex Elliott

Articles

The aim of this paper is to investigate the relationship between Bmode and colour Doppler technical test methods with the clinical perception of Bmode and Doppler invivo test parameters. It was found that technical and clinical comparisons between the Bmode test parameters: lateral resolution versus clinical resolution; anechoic target detection versus clinical noise; and penetration depth versus clinically useful penetration depth, demonstrated moderate correlations, (r= 0.69, p

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Application Of Espi-Method For Strain Analysis In Thin Wall Cylinders, David Kennedy, Zdravko Schauperl, Seamus Greene, Emilia Mihaylova Jan 2004

Application Of Espi-Method For Strain Analysis In Thin Wall Cylinders, David Kennedy, Zdravko Schauperl, Seamus Greene, Emilia Mihaylova

Articles

The Centre for Industrial and Engineering Optics, DIT, Ireland, have recently developed and applied new optical techniques for the measurement of mechanical strain, one of which was based on electronic speckle pattern interferometry (ESPI). The accuracy of this optical technique when used on flat surfaces is well established. In this research the technique is tested on curved surfaces, and results are compared with the theoretical hoop strain as predicted by the bi-axial strain equation modified for the thin cylinder, and by those obtained by electrical resistance strain gauge (ERSG) undoubtedly the principal method of measuring mechanical strain. For testing procedures, …

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Mechancial Characterization Of Unplasticised Polyvinylchloride Thick Pipes Using Electronic Speckle Pattern Interferometry, Emilia Mihaylova, Benjamin Potelon, Guntaka Tulasi Sridhar Reddy, Vincent Toal, Ciaran Smith Jan 2004

Mechancial Characterization Of Unplasticised Polyvinylchloride Thick Pipes Using Electronic Speckle Pattern Interferometry, Emilia Mihaylova, Benjamin Potelon, Guntaka Tulasi Sridhar Reddy, Vincent Toal, Ciaran Smith

Articles

In this work a number of techniques (electronic speckle pattern interferometry, holographic interferometry, strain gauge and finite element method) are brought to bear in order to establish consistency in the results of strain measurement. This is necessary if optical nondestructive testing methods, such as those used here, are to gain acceptance for routine industrial use. The FE model provides a useful check. Furthermore, ESPI fringe data facilitates the extension of FE models, an approach that is of growing importance in component testing. The use of in-plane and out-of-plane sensitive electronic speckle pattern interferometry (ESPI) for non-destructive material characterization of thick …

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Studies In Cardiac Defribrillation, Eamonn Mckenna Jan 2004

Studies In Cardiac Defribrillation, Eamonn Mckenna

Masters

Cardiac disease resulting in cardiac arrest is one of the most common fatal diseases in the developed world. Defibrillation is the medical procedure used to correct the irregular cardiac rhythm (ventricular fibrillation (VF)) which is very often detected in patients suffering cardiac arrest. In the work reported in this thesis, two aspects of the defibrillation of patients in VF were examined. The first area of investigation concentrated on the use of multiple defibrillation electrodes to be used during closed chest (transthoracic) defibrillation. This study was carried out in a saline bath and centred on “focusing” electric fields from perimeter electrodes …

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Safety Performance On 20 Construction Sites In Dublin, Paul Mcevoy Jan 2004

Safety Performance On 20 Construction Sites In Dublin, Paul Mcevoy

Masters

Abstract The aim of this research was to assess factors affecting safety performance on twenty apartment construction sites in Dublin using qualitative and quantitative risk assessment techniques. The quantitative techniques involved observing compliance with recommended safety procedures. The qualitative techniques involved an assessment of site safety management documentation and semi structured interviews with site management regarding site safety procedures. The field work was carried out between November 2003 and October 2004. The results showed that five sites out of twenty had high standards of safety and prevented all possible falls from heights. The five best performing sites were characterised by …

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A Framework For Processing Viewer-Based Directional Queries In A Simulated Mobile Environment, Keith Gardiner Jan 2004

A Framework For Processing Viewer-Based Directional Queries In A Simulated Mobile Environment, Keith Gardiner

Masters

With the steady and fast advancements in the integration of geographic information systems and mobile location-based services, interest in exploiting this technology for Cultural Heritage (CH) data sharing has become apparent. In this area there has been an increasing need to integrate positional information with non-positional data and add a spatial dimension to the definition of a users “context” In this research the integration of Cultural Heritage information coupled with spatial technologies is investigated. The idea is based on a 3-tier architecture that positions the user at the client layer with a mobile device, a spatial query processor in the …

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An Investigation Into Appliance Durability In The Presence Of Power System Disturbances, Steven R. Mcgovern Jan 2004

An Investigation Into Appliance Durability In The Presence Of Power System Disturbances, Steven R. Mcgovern

Masters

The increased trend towards miniaturisation and greater efficiency in electronic equipment has also resulted in increased susceptibility to power system disturbances. Such equipment has become less tolerant to supply transients and variations and as a result there has been an increase in consumer product damage complaints. Greater consumer awareness has seen power quality become a major issue for both the domestic user and the utility companies. Arising from these issues an approach from the Electricity Supply Board of Ireland was made to engage into an investigation of the effects of power quality disturbances at the low-voltage domestic level. On commencement …

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Liquid Crystal Based Optical Switches, Yuliya Semenova, S. Dovgalets, Yuri Panarin, Gerald Farrell Jan 2004

Liquid Crystal Based Optical Switches, Yuliya Semenova, S. Dovgalets, Yuri Panarin, Gerald Farrell

Articles

Optical switches using two electro-optical effects in liquid crystals are proposed and investigated for incorporation in a switch matrix for optical networks. These two devices employ selective reflection in cholesteric layers and total reflection at the border between glass and nematic liquid crystal. Prototypes of these switches have been designed and their parameters have been investigated. Initial results suggest the switching contrast ratio of 38.5 and 42 dB, respectively, with insertion loss about 2.3…2.9 dB for polarized light.

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State Feedback Integral Control By Velocity-Based Multiple Model Networks, Ruiyao Gao, Aidan O'Dwyer Jan 2004

State Feedback Integral Control By Velocity-Based Multiple Model Networks, Ruiyao Gao, Aidan O'Dwyer

Conference papers

Velocity-based (VB) multiple model networks have the advantage of allowing the capture of the dynamics of non-linear systems when compared to conventional multiple model networks, for they build a direct relationship between the non-linear system and the VB linearisation. To have the best use of modelled dynamic information for the controller design, this paper proposes a novel controller design approach, which associates an integral action with state feedback in local controller design. It overcomes the difficulty in the implementation of the velocity-based approach, which normally involves deducing the differential signal. It holds continuity with linear control theory in the analysis …

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Implementation Of New Modified Smith Predictor Designs, Pauline Sourdille, Aidan O'Dwyer Jan 2004

Implementation Of New Modified Smith Predictor Designs, Pauline Sourdille, Aidan O'Dwyer

Conference papers

This paper outlines two modified Smith predictors developed previously by the authors and then presents the implementation results of these structures for the control of a pilot scale heating and ventilation system, the PT 326 process trainer from Feedback Instruments Ltd. These results are compared to the results obtained with a Smith predictor structure.

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Onset Based Audio Segmentation For The Irish Tin Whistle, Mikel Gainza, Bob Lawlor, Eugene Coyle Jan 2004

Onset Based Audio Segmentation For The Irish Tin Whistle, Mikel Gainza, Bob Lawlor, Eugene Coyle

Conference papers

A technique for segmenting tin whistle audio signals according to the position of the note onsets is presented. This method focuses on the characteristics of the tin whistle within Irish traditional music, customising a time-frequency based representation for detecting the instant when a note starts and releases. Musical ornamentation, such as cuts and strikes, are very common in Irish traditional music and are played during the onset stage. Taking advantage of this musical feature, a novel technique for improving the onset time estimation is also presented.

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Application Of Wavelet Transform To Power Quality (Pq) Disturbance Analysis, Malabika Basu, Biswajit Basu Jan 2004

Application Of Wavelet Transform To Power Quality (Pq) Disturbance Analysis, Malabika Basu, Biswajit Basu

Conference papers

This paper presents a wavelet analysis based time-frequency technique to identify power system transients and disturbances. A mother wavelet basis function (Littlewood- Paley (L-P)) with dyadic non-overlapping frequency hands has been used. The advantage of the proposed approach is in identification of the occurrence and duration of the disturbances. A few power signals with power quality disturbances have been analysed to show the effectiveness of the proposed technique.

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Optimal Control Strategy Of Upqc For Minimum Operational Losses, Malabika Basu, Michael Farrell, Michael Conlon, Kevin Gaughan, Eugene Coyle Jan 2004

Optimal Control Strategy Of Upqc For Minimum Operational Losses, Malabika Basu, Michael Farrell, Michael Conlon, Kevin Gaughan, Eugene Coyle

Conference papers

The paper deals with a new control technique for a unified power quality conditioner (UPQC), which is the most comprehensive of FACTS devices. The problems of power quality continue to gain in significance because of the proliferation of sensitive and harmonic producing loads in electrical networks. Greater awareness among customers with regard to supply integrity and a desire by suppliers to be able to guarantee a certain degree of power quality to customers is being reflected in the development of innovative power quality solutions. The UPQC, which is a combination of shunt and series compensation, is designed to cater for …

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A Simple Phase-Shifting Lateral Shearing Interferometer, Emilia Mihaylova, Maurice Whelan, Vincent Toal Jan 2004

A Simple Phase-Shifting Lateral Shearing Interferometer, Emilia Mihaylova, Maurice Whelan, Vincent Toal

Articles

A phase-shifting electronic speckle pattern shearing interferometer with a very simple shearing device is proposed. Two partially reflective glass plates are used to introduce the shear in this new interferometer. The reflection coefficients of the coatings on the two plates are 0.3 and 0.7. The distance between the two glass plates controls the size of the shear. The proposed new interferometric system is simple, flexible, and low cost.

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Investigation Of The Photoinduced Surface Relief Modulation In Acrylamide-Based Photopolymer, Izabela Naydenova, Emilia Mihaylova, Suzanne Martin, Vincent Toal Jan 2004

Investigation Of The Photoinduced Surface Relief Modulation In Acrylamide-Based Photopolymer, Izabela Naydenova, Emilia Mihaylova, Suzanne Martin, Vincent Toal

Conference Papers

A surface relief diffraction grating is inscribed in acrylamide photopolymer by holographic recording with spatial frequency below 300 l/mm. The periodic surface modulation appears in addition to a volume phase holographic grating. Due to the nature of the presented photopolymerisable material the gratings are induced by light only and no post-processing is required. An investigation of the dependance of the amplitude of the photoinduced relief modulation on spatial frequency of recording and on sample thickness has been carried out utilising white light interferometry. A model of the mechanism of surface relief formation is proposed on the basis of the measured …

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Thin-Film Simulation Model For Comparing Production Schedules In A Semiconductor Fabrication Facility, Amr Arisha, Paul Young Jan 2004

Thin-Film Simulation Model For Comparing Production Schedules In A Semiconductor Fabrication Facility, Amr Arisha, Paul Young

Conference papers

Analysis of advanced manufacturing systems in any manufacturing industry requires certain level of knowledge about the system. Flexible manufacturing cells, in particular, are commonly used in most wafer fabrication to provide the ability to change product without requiring the construction of new manufacturing plant. This level of flexibility comes at a significant capital cost and, in order to achieve the maximum potential of each cell, it is essential to characterize and establish the performance of these cells in detail before a new production plan is implemented. Using state-of-the-art computer simulation and a structured modelling methodology a generic model of flexible …

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Applications Of Simulation In Semiconductor Manufacturing Facilities, Amr Arisha, Paul Young Jan 2004

Applications Of Simulation In Semiconductor Manufacturing Facilities, Amr Arisha, Paul Young

Conference papers

Semiconductor fabrication facilities face many challenges through the many phases of their life cycle including design, build, various production ramps, and many levels of production. Confronted with global competition and rapidly changing technology and customer requirements, there is an increasing demand for rapid solution techniques to improve efficiency in manufacturing. The complexities and forces of both market and the process combine to make the use of simulation crucial at many different planning and control levels. While not a panacea for sustainable performance, simulation provides an effective vehicle for defining the path from competitive concepts to real world solutions and gives …

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Pan-European Logistics And Scm Challenges: Towards An Integrated Approach To Supply Chain Re-Engineering, Edward Sweeney Jan 2004

Pan-European Logistics And Scm Challenges: Towards An Integrated Approach To Supply Chain Re-Engineering, Edward Sweeney

Other Resources

No abstract provided.

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Mobile And Accessible Dublin: An Application Of The Prospective Methodology In Developing A Vision For The Future Integration Of Transportation And Land Use In Dublin, Elzbieta Krawczyk Jan 2004

Mobile And Accessible Dublin: An Application Of The Prospective Methodology In Developing A Vision For The Future Integration Of Transportation And Land Use In Dublin, Elzbieta Krawczyk

Articles

Contemporary cities can be characterised by a high pace of change and the growing complexity of their systems. Technological, economic and social evolution brings transformation that needs to be dealt with and accommodated in order to sustain consistent harmonious growth. Many cities are not prepared to adapt to these changes. This results in a vast range of urban problems. The rapid growth of Dublin during the last decade has intensified infrastructural and transportation problems. A number of institutions have been addressing these difficulties through the application of various solutions. This paper presents an attempt to address the lack of efficient …

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Futures Thinking To Achieve Sustainable Development At Local Level In Ireland, Lorcan Sirr, Ruth Kelly, John Ratcliffe Jan 2004

Futures Thinking To Achieve Sustainable Development At Local Level In Ireland, Lorcan Sirr, Ruth Kelly, John Ratcliffe

Reports

We are living in times of unprecedented global change and upheaval and over the next ten to 20 years governments, organisations and individuals will face increasing difficulties in an environment of growing complexity, heightened uncertainty and a quickening pace of change. The concept of sustainable development implies the reconciliation of long-term socio-economic development, environmental protection and quality of life; essentially it is concerned with the future. Unfortunately, the potential for linking “futures thinking” to debates about sustainable development at local and regional government levels is relatively undeveloped, particularly in Ireland. Responding to this challenge, The Futures Academy at Technological University …

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Fostering Of Creativity Within An Imaginative Curriculum In Higher Education, Roisin Donnelly Jan 2004

Fostering Of Creativity Within An Imaginative Curriculum In Higher Education, Roisin Donnelly

Journal Articles

Psychology is frequently used as a foundation discipline in the training of adult educators because it addresses those questions which naturally emerge from an engagement with adult learning and teaching (Tennant, 1997). The professional context which forms the focus of this article is no different. By providing academic support for lecturers in a higher education institution in Ireland, there is a desire to develop a sustainable curriculum model whereby by working with them on designing and developing creative curricula in their various subject disciplines in the arts and sciences they, in turn, pass the benefits of this on to their …

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Analysis Of Data Sets Using Trio Sonification, Charlie Cullen, Eugene Coyle Jan 2004

Analysis Of Data Sets Using Trio Sonification, Charlie Cullen, Eugene Coyle

Conference papers

Recent advances in technology have suggested that sound and audio play a far greater part in our daily working lives than ever before. Mobile phone ring tones are now based upon polyphonic music sequences that allow relatively complex audio to be generated from a handset by way of conveying information (i.e. a call or message is incoming). This real world example of sonification suggests that far more could be made of sonification techniques for analysis- particularly in the business environment. One advantage of sonification is its relatively hands free nature in that once a sequence is being played it does …

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The History Of Seafood In Irish Cuisine And Culture, Máirtín Mac Con Iomaire Jan 2004

The History Of Seafood In Irish Cuisine And Culture, Máirtín Mac Con Iomaire

Articles

Fish is one of the most abundant wild foods available to a small island nation. Certain species of seafood have moved from being ‘poor man’s food’ to ‘luxury food’ over time. It may be said that the Irish do not behave as island people since we have little or no history of exploiting the sea compared to our European partners. Ireland was late developing its fishing industry and now suffers reduced EU fish quotas, the unfortunate but necessary result of decades of over-fishing on European waters. This paper investigates the historical role seafood has played in Irish cuisine and culture …

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2004 - 2006 Postgraduate Prospectus, Dublin Institute Of Technology Jan 2004

2004 - 2006 Postgraduate Prospectus, Dublin Institute Of Technology

DIT Publications

Postgrad prospectus for years 2004 - 2006, containing information on applications to studies, disability services, research funding, international student office, contact persons.

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