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2004

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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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On-Road Motor Vehicle Emissions From Around The World, Donald H. Stedman, Gary A. Bishop Jan 2004

On-Road Motor Vehicle Emissions From Around The World, Donald H. Stedman, Gary A. Bishop

Fuel Efficiency Automobile Test Publications

In 1993, on-road emissions in Continental Europe showed a pronounced South/North declining gradient for CO, HC and NO fuel specific emissions (gm/kg). Emissions in Hamburg and Rotterdam were comparable to emissions measured in 1993 in the U.S.A. with the same on-road instrument. Contrasts between emissions in the USA, the UK and Sweden demonstrated the importance both of modern catalysts and of good maintenance. The same contrast in 1998 shows the same picture but lower emissions at all three locations. In the decade from 1993-2003, U.S. emissions have declined markedly, apparently mainly as a result of lower emitting, better maintained, new …

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Classifying And Responding To Network Intrusions, Maria Papadaki Jan 2004

Classifying And Responding To Network Intrusions, Maria Papadaki

School of Engineering, Computing and Mathematics Theses

Intrusion detection systems (IDS) have been widely adopted within the IT community, as passive monitoring tools that report security related problems to system administrators. However, the increasing number and evolving complexity of attacks, along with the growth and complexity of networking infrastructures, has led to overwhelming numbers of IDS alerts, which allow significantly smaller timeframe for a human to respond. The need for automated response is therefore very much evident. However, the adoption of such approaches has been constrained by practical limitations and administrators' consequent mistrust of systems' abilities to issue appropriate responses. The thesis presents a thorough analysis of …

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Heated Tooling For Aerospace Composites Manufacture, Losif Progoulakis Jan 2004

Heated Tooling For Aerospace Composites Manufacture, Losif Progoulakis

School of Engineering, Computing and Mathematics Theses

The increasingly high capital investment required for large autoclaves, ovens and facilities for the processmg of large composite components creates a number of financial constraints for the development and manufacturing of larger composite aircraft products. This thesis has investigated the use of heated tooling as an alternative to the use of autoclave and oven curing. A design and development methodology for heated tools has been proposed while a number of heated tooling options have been identified and described. Three representative heated tool options using heater mats, electro-conductive textiles and wire heater elements have been evaluated. The curing capability of a …

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Guidance And Control Of An Autonomous Underwater Vehicle, Wasif Naeem Jan 2004

Guidance And Control Of An Autonomous Underwater Vehicle, Wasif Naeem

School of Engineering, Computing and Mathematics Theses

A cooperative project between the Universities of Plymouth and Cranfield was aimed at designing and developing an autonomous underwater vehicle named Hammerhead. The work presented herein is to formulate an advance guidance and control system and to implement it in the Hammerhead. This involves the description of Hammerhead hardware from a control system perspective. In addition to the control system, an intelligent navigation scheme and a state of the art vision system is also developed. However, the development of these submodules is out of the scope of this thesis. To model an underwater vehicle, the traditional way is to acquire …

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Aura Will Study The Good And The Bad About Ozone, Iwu Magazine Jan 2004

Aura Will Study The Good And The Bad About Ozone, Iwu Magazine

Illinois Wesleyan University Magazine, 2002-2017

Thanks to Rich Cebula ’78 and the dozens of other scientists and technicians who have worked on the project, Aura is now poised to begin its mission, continuously monitoring ozone levels in Earth’s lower and upper atmosphere, tracking the gases active in ozone chemistry, and improving our ability to predict ozone change.

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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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Quality Assurance Of Cervical Smear Slide Inspection Using A Novel Eye-Tracking Technique, Lee Roy Coombes Jan 2004

Quality Assurance Of Cervical Smear Slide Inspection Using A Novel Eye-Tracking Technique, Lee Roy Coombes

School of Engineering, Computing and Mathematics Theses

A novel objective quality assurance system for smear slide screening is investigated in this thesis. A method of data validation was developed that compares data from an eye tracked image display, machine image colour texture analysis and expert judgements in a statistical manner to identify salient areas of cervical cytological images. These data are used to construct screener performance profiles, which have been compared to screener experience. The experimental methodology is described and how the screener performance profile is constructed. Results from a study of 10 screeners, checkers and pathologists are presented showing predicted trends of human performance. Relations to …

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Speech Quality Prediction For Voice Over Internet Protocol Networks, Lingfen Sun Jan 2004

Speech Quality Prediction For Voice Over Internet Protocol Networks, Lingfen Sun

School of Engineering, Computing and Mathematics Theses

IP networks are on a steep slope of innovation that will make them the long-term carrier of all types of traffic, including voice. However, such networks are not designed to support real-time voice communication because their variable characteristics (e.g. due to delay, delay variation and packet loss) lead to a deterioration in voice quality. A major challenge in such networks is how to measure or predict voice quality accurately and efficiently for QoS monitoring and/or control purposes to ensure that technical and commercial requirements are met. Voice quality can be measured using either subjective or objective methods. Subjective measurement (e.g. …

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A Model For Predicting The Performance Of Ip Videoconferencing, Licha Mued Jan 2004

A Model For Predicting The Performance Of Ip Videoconferencing, Licha Mued

School of Engineering, Computing and Mathematics Theses

With the incorporation of free desktop videoconferencing (DVC) software on the majority of the world's PCs, over the recent years, there has, inevitably, been considerable interest in using DVC over the Internet. The growing popularity of DVC increases the need for multimedia quality assessment. However, the task of predicting the perceived multimedia quality over the Internet Protocol (IP) networks is complicated by the fact that the audio and video streams are susceptible to unique impairments due to the unpredictable nature of IP networks, different types of task scenarios, different levels of complexity, and other related factors. To date, a standard …

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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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An Intelligent Dissolved Oxygen Microsensor System With Electrochemically Actuated Fluidics, Chang-Soo Kim, Jongwon Park, Xinbo He Jan 2004

An Intelligent Dissolved Oxygen Microsensor System With Electrochemically Actuated Fluidics, Chang-Soo Kim, Jongwon Park, Xinbo He

Electrical and Computer Engineering Faculty Research & Creative Works

A new dissolved oxygen monitoring microsystem is proposed to achieve in situ intelligent self-calibration by using an electrochemically actuated fluidic system. The electrochemical actuation, based on water electrolysis, plays two critical roles in the proposed microsystem. First, the electrochemically generated gases serve as the calibrants for the in situ 2-point calibration/diagnosis procedure of the microsensor in a chip. Secondly, the electrochemical generation and collapse of gas bubbles provide the driving force of the bidirectional fluidic manipulation for sampling and dispensing of the sample solution. A microsystem including a dissolved oxygen microprobe, electrochemical actuators, and a fluidic structure are prepared by …

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Time-Scale Modification Of Music Using A Synchronized Subband/Time-Domain Approach, David Dorran, Robert Lawlor Jan 2004

Time-Scale Modification Of Music Using A Synchronized Subband/Time-Domain Approach, David Dorran, Robert Lawlor

Conference papers

Time-domain audio time-scaling algorithms are efficient in comparison to their frequency-domain counterparts, but they rely upon the existence of a quasi-periodic signal to produce a high quality output. This requirement makes them unsuitable for direct application to complex multi-pitched signals such as polyphonic music. However, it has been shown that applying time-domain algorithms on a subband basis can resolve this issue. Existing subband/time domain approaches result in a reverberant/phasy artifact being introduced into the output due to poor synchronization between time-scaled subbands. This paper presents a number of synchronization schemes that greatly reduce the amount of reverberation/phasiness introduced into the …

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An Efficient Phasiness Reduction Technique For Moderate Audio Time-Scale Modification, David Dorran, Eugene Coyle, Robert Lawlor Jan 2004

An Efficient Phasiness Reduction Technique For Moderate Audio Time-Scale Modification, David Dorran, Eugene Coyle, Robert Lawlor

Conference papers

Phase vocoder approaches to time-scale modification of audio introduce a reverberant/phasy artifact into the time-scaled output due to a loss in phase coherence between short-time Fourier transform (STFT) bins. Recent improvements to the phase vocoder have reduced the presence of this artifact, however, it remains a problem. A method of time-scaling is presented that results in a further reduction in phasiness, for moderate time-scale factors by taking advantage of some flexibility that exists in the choice of phase required so as to maintain horizontal phase coherence between related STFT bins. Furthermore, the approach leads to a reduction in computational load …

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Real-Time Sound Source Separation: Azimuth Discrimination And Resynthesis, Dan Barry, Robert Lawlor, Eugene Coyle Jan 2004

Real-Time Sound Source Separation: Azimuth Discrimination And Resynthesis, Dan Barry, Robert Lawlor, Eugene Coyle

Conference papers

We present a real-time sound source separation algorithm which performs the task of source separation based on the lateral displacement of a source within the stereo field. The algorithm exploits the use of the pan pot as a means to achieve image localisation within stereophonic recordings. As such, only an interaural intensity difference exists between left and right channels for a single source. Gain scaling and phase cancellation techniques are used in the frequency domain to expose frequency dependent nulls across the Azimuth plane. The position of these nulls in conjuction with magnitude estimation and grouping techniques are then used …

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Harmonic Sound Source Separation Using Fir Comb Filters, Mikel Gainza, Robert Lawlor, Eugene Coyle Jan 2004

Harmonic Sound Source Separation Using Fir Comb Filters, Mikel Gainza, Robert Lawlor, Eugene Coyle

Conference papers

A technique for separating harmonic sound sources using FIR comb filters is presented. First, a pre-processing task is performed by a multipitch estimator to detect the pitches that the signal is composed of. Then, a method based on the Short Time Fourier Transform (STFT) is utilized to iteratively extract the harmonics belonging to a given source by using FIR comb filters. The presented approach improves upon exising sinusoidal model approaches in terms of the perceptual quality of the extracted signal.

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Henrietta Street Conservation Plan, Tracy Pickerill, John Montague, Shaffrey Associates (Architects), Carrig Conservation Ltd., Lee Mccullough & Partners (Engineers), Boylan Farrelly (Quantity Surveyors) Jan 2004

Henrietta Street Conservation Plan, Tracy Pickerill, John Montague, Shaffrey Associates (Architects), Carrig Conservation Ltd., Lee Mccullough & Partners (Engineers), Boylan Farrelly (Quantity Surveyors)

Reports

The objectives behind the Henrietta Street Conservation Plan are to re-affirm the significance of Henrietta Street; to identify the issues that undermine the importance of the street and to set out policies aimed at protecting the aspects of the street which are of importance into the future.

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Indirect Adaptive Control For Synchronous Generator: Comparison Of Mlp/Rbf Neural Networks Approach With Lyapunov Stability Analysis, Jung-Wook Park, Ronald G. Harley, Ganesh K. Venayagamoorthy Jan 2004

Indirect Adaptive Control For Synchronous Generator: Comparison Of Mlp/Rbf Neural Networks Approach With Lyapunov Stability Analysis, Jung-Wook Park, Ronald G. Harley, Ganesh K. Venayagamoorthy

Electrical and Computer Engineering Faculty Research & Creative Works

This paper compares two indirect adaptive neurocontrollers, namely a multilayer perceptron neurocontroller (MLPNC) and a radial basis function neurocontroller (RBFNC) to control a synchronous generator. The different damping and transient performances of two neurocontrollers are compared with those of conventional linear controllers, and analyzed based on the Lyapunov direct method.

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Improving The Patent System For The 21st Century: Optimizing The Requirements To Be A Member Of The Patent Bar, Nathan Lewis Jan 2004

Improving The Patent System For The 21st Century: Optimizing The Requirements To Be A Member Of The Patent Bar, Nathan Lewis

Computer Law Review and Technology Journal

As the importance of protecting technology has increased in the past several years, there has been an increase in the demand for patent attorneys and agents. The patent bar operates to limit the number of people that are available to satisfy this demand. Although the patent office has recently updated their procedural requirements for taking the patent bar, the substantive requirements have received little attention to date. This paper analyZes the current requirements in light of their purpose and effect, as well as the international requirements to join the patent bar of other countries. It concludes that the current patent …

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Can A Copyright Holder Prevent Reverse Engineering? The Federal Circuit Court Holds That The Federal Copyright Act Does Not Preempt "No Reverse Engineering" Clauses: Bowers V. Baystate Tech. Inc. , Jonathan Wilson Jan 2004

Can A Copyright Holder Prevent Reverse Engineering? The Federal Circuit Court Holds That The Federal Copyright Act Does Not Preempt "No Reverse Engineering" Clauses: Bowers V. Baystate Tech. Inc. , Jonathan Wilson

Computer Law Review and Technology Journal

Intellectual property rights exist to protect the fruit of one's intellectual labor. But when an idea is made public, there develops a risk that another might be able to rework the process of creation and diminish the value of the original intellectual labor. This is exactly what happened to Harold L. Bowers. By utilizing the technique of reverse engineering, Baystate Technologies used Bowers' computer program to develop their own CAD software design to compete with Bowers's program. Bowers, however, had placed a "no reverse engineering" clause on his shrink-wrap license. This conflict presented the Federal Circuit Court with the difficult …

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