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Full-Text Articles in Other Engineering

Machine Annotation Of Sets Of Traditional Irish Dance Tunes, Bryan Duggan, Mikel Gainza, Padraig Cunningham Jan 2008

Machine Annotation Of Sets Of Traditional Irish Dance Tunes, Bryan Duggan, Mikel Gainza, Padraig Cunningham

Conference papers

A set in traditional Irish music is a sequence of two or more dance tunes in the same time signature, where each tune is repeated an arbitrary number of times. A turn in a set represents the point at which either a tune repeats or a new tune is introduced. Tunes in sets are played in a segue (without a pause) and so detecting the turn is a significant challenge. This paper presents the MATS alogrithm, a novel algorithm for identifying turns in sets of traditional Irish music. MATS works on digitised audio files of monophonic flute and tin-whistle music. …


Violin Timbre Space Features, Jane Charles, Derry Fitzgerald, Eugene Coyle Jan 2008

Violin Timbre Space Features, Jane Charles, Derry Fitzgerald, Eugene Coyle

Conference papers

Signal processing techniques, from which the quality of a violinist's playing can be assessed by a computer are presented in this paper


Musical Source Separation Using Generalised Non-Negative Tensor Factorisation Models, Eugene Coyle, Derry Fitzgerald, Matt Cranitch Jan 2008

Musical Source Separation Using Generalised Non-Negative Tensor Factorisation Models, Eugene Coyle, Derry Fitzgerald, Matt Cranitch

Conference papers

A shift-invariant non-negative tensor factorisation algorithm for musical source separation is proposed which generalises previous work by allowing each source to have its own parameters rather a fixed set of parameters for all sources. This allows independent control of the number of allowable notes, number of harmonics and shifts in time for each source. This increased flexibility allows the incorporation of further information about the sources and results in improved separation and resynthesis of the separated sources.


The New Engineer: Between Employability And Social Responsibility, Eddie Conlon Jan 2008

The New Engineer: Between Employability And Social Responsibility, Eddie Conlon

Articles

The reasons behind the demand for what is sometimes called the New Engineer are critically examined and it is argued that a focus on employability alone is not sufficient to prepare socially responsible engineers. By examining issues around work organisation and sustainability it is proposed that engineers need to understand the wider social context in which they work. It is argued that the focus of ethics education should be broadened to focus on the social structure and the way it both enables and constrains socially responsible conduct. There is a call to refocus engineers’ attitudes towards the systems of regulation …


An Investigation Of Block Searching Algorithms For Video Frame Codecs, Jerome Casey Jan 2008

An Investigation Of Block Searching Algorithms For Video Frame Codecs, Jerome Casey

Other Resources

Block matching is the most computationally demanding aspect of the video encoding process. In many applications real-time video encoding is desired and therefore it is important that the encoding is fast. Also where handheld devices such as a PDA or mobile phone are concerned a less computationally intensive algorithm means a simpler processor can be used which saves on hardware costs and also extends battery life. An optimised algorithm also allows these devices to be used in low bandwidth wireless networks. The challenge is to decrease the computational load on the system without compromising the quality of the video stream …


An Assessment Of The Use Of Structural Deformation As A Method Of Determining Area Of Fire Origin, Andrew T. Tinsley, David J. Icove Jan 2008

An Assessment Of The Use Of Structural Deformation As A Method Of Determining Area Of Fire Origin, Andrew T. Tinsley, David J. Icove

Safety, Security and Emergency Management Faculty and Staff Scholarship

Current methodologies of origin investigation have yet to include the structural deformations seen in steel buildings as a viable indicator of the area of origin of a given fire. As many steel structures are of relatively large size, it is often difficult to determine the area of origin using the typical dig and sift methods advocated in NFPA 921, especially if the extent of the fire was large and there were no witnesses as to the origin of the fire. As has been investigated for years, the performance of steel is highly affected by the application of heat. The science …


Responses Of Engineering Students To Lectures Using Powerpoint, Aidan O'Dwyer Jan 2008

Responses Of Engineering Students To Lectures Using Powerpoint, Aidan O'Dwyer

Conference papers

This contribution reports on, reflects on and evaluates engineering students responses to the use of PowerPoint in a lecture environment, compared to a more traditional lecturing approach. The contribution concludes that, on average, students value PowerPoint based lectures both as a means of better understanding the material and for the mediums structural and organisational advantages. Students also strongly favour the PowerPoint lectures being available on-line and that a paper copy of the PowerPoint presentation be distributed at the lecture.


Evaluation Of A Virtual Refrigerant Charge Sensor, Woohyun Kim, James E. Braun, Haorong Li Jan 2008

Evaluation Of A Virtual Refrigerant Charge Sensor, Woohyun Kim, James E. Braun, Haorong Li

Durham School of Architectural Engineering and Construction: Faculty Publications

This paper presents a thorough evaluation of a method for determining refrigerant charge that employs low-cost, non-invasive measurements (i.e., surface mounted temperature measurements). The method could be used as part of a protocol for verified service providers (VSPs) in AC diagnostic tune-up or refrigerant charge, air flow (RCA) verification programs. Ultimately, the method could be embedded within a portable virtual refrigerant charge gauge for a technician’s use or permanently installed on the AC unit. The accuracy of the virtual refrigerant charge sensor method is evaluated in this paper using laboratory data for a number of different systems and over a …


Swelling Effects In Dynamic Equi-Biaxial Testing Of Epdm Elastomers By The Bubble Inflation Method, John Hanley Jan 2008

Swelling Effects In Dynamic Equi-Biaxial Testing Of Epdm Elastomers By The Bubble Inflation Method, John Hanley

Doctoral

The thesis describes the effect of oil swelling on the fatigue life of EPDM under conditions of multi-axial fatigue using bubble inflation. The motivation for the research is outlines, along with a review of previous research conducted on the topic. Initial test results are presented and the evolution of the procedure for the final set of tests is described. One principal requirement identified when carrying out the fatigue tests was the need for constant stress control. Following development of the final test procedure, specimens were subjected to varying degrees of swelling in reference oils and cycled at constant engineering stress …


Detect: Developing Sustainable Pathways Towards Innovative, Sustainable Collaboration Between Four Engineering, Design And Technology Education Institutions, Michael Dyrenfurth, Mike Murphy, Donal Mchale, Richard Hayes, Robert Herrick, Dhushy Sathianathan, Heinz Schmidt-Walter, Eugene Coyle, Robert Simpson Jan 2008

Detect: Developing Sustainable Pathways Towards Innovative, Sustainable Collaboration Between Four Engineering, Design And Technology Education Institutions, Michael Dyrenfurth, Mike Murphy, Donal Mchale, Richard Hayes, Robert Herrick, Dhushy Sathianathan, Heinz Schmidt-Walter, Eugene Coyle, Robert Simpson

Conference papers

No abstract provided.


Philosophy Matters In Engineering Studies, William Grimson, Mike Murphy, Steen Hyldgaard Christensen, Erik Erno-Kjolhede Jan 2008

Philosophy Matters In Engineering Studies, William Grimson, Mike Murphy, Steen Hyldgaard Christensen, Erik Erno-Kjolhede

Conference papers

This article explores the rationale for including in an integrated five-years Masters Engineering programme liberal arts subjects, in particular Philosophy and the History of Science and Technology. We argue that the tools of philosophy should be used to provide additional insight into how engineering was and is 'performed'. We first review the challenge, next we present some results of an empirical case study carried out at AU-IBT in Denmark. The purpose of the case study was to examine a sample of engineering teachers´ attitudes towards the relevance and scope of liberal arts subjects for engineering students. Finally we conclude with …


Single Channel Sound Source Separation Combining Delay Estimation And The Adress Algorithm, Mark Leddy, Dan Barry, David Dorran, Eugene Coyle Jan 2008

Single Channel Sound Source Separation Combining Delay Estimation And The Adress Algorithm, Mark Leddy, Dan Barry, David Dorran, Eugene Coyle

Conference papers

A method for single channel source separation is proposed in this paper, which uses estimates fo the delay co-efficient of individual sources within an echoic mixture using autocorrelation, following which a "pseudo-stereo mixture" is generated, to which the ADRess algorithm can be applied. The system is evaluated in a theoretical situation, where the mixture signal to be separated consists of two individual source signals, and a delayed version of each signal. Estimates of the individual delay lengths are made and then used to create a pseudo stereo mix, where one channel consists of the orginal mixture signal, and the second …


Integrating Engineering Ethics And Research Skills In A First Year Programme, Eddie Conlon Jan 2008

Integrating Engineering Ethics And Research Skills In A First Year Programme, Eddie Conlon

Conference papers

A first year module which introduces students to the social dimension of engineering is described. The key teaching tool is the use of group projects to develop students’ learning skills. The importance of addressing the motivation for engineering students studying non-technical modules is emphasised. Data used to evaluate the module is presented. It is shown that the nature of the project undertaken affects the attainment of learning outcomes. The conclusion focuses on some shortcomings of the module and highlights the importance of appropriately structuring the learning environment to facilitate self-directed learning by early year students.


Ict And Innovation Processes In Small Italian Logistics Companies, Edward Sweeney Oct 2007

Ict And Innovation Processes In Small Italian Logistics Companies, Edward Sweeney

Conference papers

No abstract provided.


Derivation And Application Of A Conserved Orbital Energy For The Inverted Pendulum Bipedal Walking Model, Jerry E. Pratt, Sergey V. Drakunov Apr 2007

Derivation And Application Of A Conserved Orbital Energy For The Inverted Pendulum Bipedal Walking Model, Jerry E. Pratt, Sergey V. Drakunov

Publications

We present an analysis of a point mass, point foot, planar inverted pendulum model for bipedal walking. Using this model, we derive expressions for a conserved quantity, the “Orbital Energy”, given a smooth Center of Mass trajectory. Given a closed form Center of Mass Trajectory, the equation for the Orbital Energy is a closed form expression except for an integral term, which we show to be the first moment of area under the Center of Mass path. Hence, given a Center of Mass trajectory, it is straightforward and computationally simple to compute phase portraits for the system. In fact, for …


Time For Real Values On Commercial Property, Lorcan Sirr Mar 2007

Time For Real Values On Commercial Property, Lorcan Sirr

Media

No abstract provided.


Resynthesis Methods For Sound Source Separation Using Shifted Non-Negative Factorisation Models, Derry Fitzgerald, Matt Cranitch Jan 2007

Resynthesis Methods For Sound Source Separation Using Shifted Non-Negative Factorisation Models, Derry Fitzgerald, Matt Cranitch

Conference papers

Recently, techniques such as shifted 2D non-negative matrix factorisation and shifted 2D non-negative tensor factorisations have been proposed as methods for separating harmonic musical instruments from single and multi-channel mixtures. However, these methods require the use of a Constant Q transform, for which no true inverse exists. This has adverse effects on the quality of the resynthesis of the separated sources. In this paper, a number of different resynthesis methods are investigated in order to determine the best approach to resynthesis


Automating Ornamentation Transcription, Mikel Gainza, Eugene Coyle Jan 2007

Automating Ornamentation Transcription, Mikel Gainza, Eugene Coyle

Conference papers

A novel technique for detecting single and multi-note ornaments is presented. The system detects audio segments by utilising and onset detector based on comb filters (ODCF), which is capable of detecting very close events. In addition, a novel method to remove spurious onsets due to offset events is introduced. The system utilises musical ornamentation theory to decide whether a sequence of audio segments correspond to an ornamentation musical structure. In order to evaluate the results, a database of signals produced by different players using the three different instruments has been utilised. The results represent a step forward towards fully automating …


Recruitment And Retention: The Role Of The Public Image Of Engineering, Eddie Conlon Jan 2007

Recruitment And Retention: The Role Of The Public Image Of Engineering, Eddie Conlon

Conference papers

This paper presents findings of three surveys conducted with first year students in the Faculty of Engineering in the Dublin Institute of Technology. It focuses on their motivation for studying engineering and the people who influenced the decision to do engineering. It shows there are gaps in the students’ knowledge of their programmes and also between their expectations and their experience of their course. Some proposed areas of action are identified to increase both recruitment and retention. It is argued that projecting an image of engineering as a creative activity would help in addressing recruitment and retention issues.


Reinventing A Level 7 Programme In Electrical Engineering And Greatly Improving On Student Retention, Eugene Coyle, Mike Murphy, Frank Costello, Leslie Shoemaker Jan 2007

Reinventing A Level 7 Programme In Electrical Engineering And Greatly Improving On Student Retention, Eugene Coyle, Mike Murphy, Frank Costello, Leslie Shoemaker

Books/Book chapters

Following the successful implementation over a number of decades of a three-year Diploma in Electrical and Control Engineering at Technological University Dublin, the programme entered a period of extreme difficulty and uncertainty in the late nineteen ninetees and early years of the new millennium. As with many such engineering programmes, student numbers seeking to enter began to diminish. Furthermore, engagement and retention of students who had enrolled on the programme became evermore challenging, necessitating some radical moves in the formation and operation of the programme and in putting additional student support mechanisms in place. The situation hit rock bottom between …


Engineering Science As Opposed To Natural Science, Eugene Coyle, Mike Murphy, William Grimson Jan 2007

Engineering Science As Opposed To Natural Science, Eugene Coyle, Mike Murphy, William Grimson

Books/Book chapters

In exploring the epistemology of engineering science, we propose a model of engineering. This model incorporates the goals of engineering, the approach to engineering (also called the engineering method) and the role of experience in engineering. The basis for understanding the nature of engineering science will be explored, and will be contrasted with natural science. To begin, a large-scale engineering project that was successfully completed in Ireland many years ago is discussed - specifically, the development of a megalithic passage tomb as an exemplar of the engineering method in structural design, project management and aesthetics. This exemplar firmly demonstrates that …


Growing Research In A Traditionally Teaching-Oriented College, Mike Murphy, Michael Dyrenfurth Jan 2007

Growing Research In A Traditionally Teaching-Oriented College, Mike Murphy, Michael Dyrenfurth

Conference papers

There is increasing pressure on universities to contribute to ‘the knowledge society’ by increasing the level of research activity and output within the university. This is particularly true in the sciences, engineering and technology. This increased pressure applies equally to traditionally teaching-oriented colleges (TTOC), although not at the same scale as research-intensive universities. For the TTOC, given the primacy of teaching, this paper discusses the nexus between teaching and research and the question ‘why do research?’ is addressed within the overarching goal of embedding a research culture within the college. Initiatives to develop and grow sustainable research activity in traditionally …


Enhancing Educational Programmes For Geomatics In Ireland, Frank Prendergast, William Prendergast, Avril Behan, Helen Murray Jan 2007

Enhancing Educational Programmes For Geomatics In Ireland, Frank Prendergast, William Prendergast, Avril Behan, Helen Murray

Conference Papers

The growing spatial information needs of society, the rapid development of new surveying technologies, and the global demand for appropriately qualified surveyors, have triggered a radical re-evaluation of Geomatics education in Europe. Although significant enhancements to DIT’s educational programmes have been made during the last decade, the provision of new opportunities for learners and innovative changes to existing paradigms of training and education are required. This paper addresses some of the issues confronting educators in DIT, and presents some of the strategies for their enhancement and implementation.


Towards A Personal Automatic Music Playlist Generation Alogorithm: The Need For Contextual Information, Gordon Reynolds, Dan Barry, Ted Burke, Eugene Coyle Jan 2007

Towards A Personal Automatic Music Playlist Generation Alogorithm: The Need For Contextual Information, Gordon Reynolds, Dan Barry, Ted Burke, Eugene Coyle

Conference papers

Large music collections afford the listener flexibility in the form of choice, which enables the listener to choose the appropriate piece of music to enhance or complement their listening scenario on-demand. However, bundled with such a large music collection is the daunting task of manually searching through each entry in the collection to find the appropriate song required by the listener. This often leaves the listener frustrated when trying to select songs from a large music collection. In this paper, an overview of existing methods for automatically generating a playlist is discussed. This discussion outlines advantages and disadvantages associated with …


Educating Engineers For The 21st. Century: And Why Some Elements Of History And Philosophy Should Be Incorporated Into The Curriculum, William Grimson, Mike Murphy, Eugene Coyle Jan 2007

Educating Engineers For The 21st. Century: And Why Some Elements Of History And Philosophy Should Be Incorporated Into The Curriculum, William Grimson, Mike Murphy, Eugene Coyle

Conference papers

It has been said that in some respects the Russian composer Igor Stravinsky was a magpie – borrowing styles and ideas from diverse sources for whatever musical project he was working on. The practice of engineering has this same characteristic in that it willingly takes ideas, knowledge and techniques from wherever in pursuit of completing its goal. Further, Engineering is, at least in part, in agreement with Fyodor Dostoevsky – ‘if everything on Earth were rational, nothing would happen’. Against such a background it is proposed that a framework based on both philosophy and the history of engineering, science and …


European And American Perspectives On Engineering Technology Vs Engineering Degrees, Michael Dyrenfurth, Mike Murphy, Robert Herrick, Manfred Hamann Jan 2007

European And American Perspectives On Engineering Technology Vs Engineering Degrees, Michael Dyrenfurth, Mike Murphy, Robert Herrick, Manfred Hamann

Conference papers

No abstract provided.


Key Signature Estimation, Matt Cranitch, Derry Fitzgerald, Matthew Hart Jan 2007

Key Signature Estimation, Matt Cranitch, Derry Fitzgerald, Matthew Hart

Conference papers

The problem of automatic key signature detection has been the focus of much research in recent years. Previous methods of key estimation have focused on chromagrams and key profiling techniques. This paper presents a remarkably simple but effective method of estimating key signature from musical recordings. The algorithm introduces the "keyogram", a concept resembling the chromagram, and is aimed for use on traditional Irish music. The keyogram is a measure of the likelihood of each possible major key signature based on a masked scoring system.


Time Signature Detection By Using A Multi Resolution Audio Similarity Matrix, Mikel Gainza, Eugene Coyle Jan 2007

Time Signature Detection By Using A Multi Resolution Audio Similarity Matrix, Mikel Gainza, Eugene Coyle

Conference papers

A method that estimates the time signature of a piece of music is presented. The approach exploits the repetitative structure of most music, where the same musical bar is repeated in different parts of a piece. The method utilised a multi-resolution audio similarity matrix approach, which allows comparisons between longer audio segments (bars) by combining comparisons of shorter segments (fraction of a note). The time signature method only depends on musical structure, and does not depend on the presence of percussive instruments or strong musical accents.


Cop-On To The Risks Of Buying Abroad, Lorcan Sirr Nov 2006

Cop-On To The Risks Of Buying Abroad, Lorcan Sirr

Media

No abstract provided.


Atmospheric Chemistry Of A 33–34 Hour Old Volcanic Cloud From Hekla Volcano (Iceland): Insights From Direct Sampling And The Application Of Chemical Box Modeling, William I. Rose, Genevieve A. Millard, Tamsin A. Mather, Donald E. Hunton, Bruce Anderson, Clive Oppenheimer, Brett F. Thornton, Terrence M. Gerlach, Albert A. Viggiano, Yutaka Kondo, Thomas M. Miller, John O. Ballenthin Oct 2006

Atmospheric Chemistry Of A 33–34 Hour Old Volcanic Cloud From Hekla Volcano (Iceland): Insights From Direct Sampling And The Application Of Chemical Box Modeling, William I. Rose, Genevieve A. Millard, Tamsin A. Mather, Donald E. Hunton, Bruce Anderson, Clive Oppenheimer, Brett F. Thornton, Terrence M. Gerlach, Albert A. Viggiano, Yutaka Kondo, Thomas M. Miller, John O. Ballenthin

Department of Geological and Mining Engineering and Sciences Publications

On 28 February 2000, a volcanic cloud from Hekla volcano, Iceland, was serendipitously sampled by a DC-8 research aircraft during the SAGE III Ozone Loss and Validation Experiment (SOLVE I). It was encountered at night at 10.4 km above sea level (in the lower stratosphere) and 33–34 hours after emission. The cloud is readily identified by abundant SO2 (≤1 ppmv), HCl (≤70 ppbv), HF (≤60 ppbv), and particles (which may have included fine silicate ash). We compare observed and modeled cloud compositions to understand its chemical evolution. Abundances of sulfur and halogen species indicate some oxidation of sulfur gases but …