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Articles 151 - 180 of 250
Full-Text Articles in Other Engineering
Solar Cell Efficiency Enhancement Through Down-Shifting And Up-Converting Layers: The Ephocell Project: Luminescent Downshifting Quantum Yield Measurements, M. Kennedy, L. Aubouy, D. Gutiérrez-Tauste, A. Jorge, M. Faccini, G. Noriega, M. Di Lorenzo, M. Cocca, M. Avella, M. Errico, G. Gentile, John Doran, Brian Norton, S. Baluschev, J. Bistué Guardiola, A. Robles Molina, J. Puigdollers, C. Voz, S. Daren, F. Tsvetkov, A. Pashov
Solar Cell Efficiency Enhancement Through Down-Shifting And Up-Converting Layers: The Ephocell Project: Luminescent Downshifting Quantum Yield Measurements, M. Kennedy, L. Aubouy, D. Gutiérrez-Tauste, A. Jorge, M. Faccini, G. Noriega, M. Di Lorenzo, M. Cocca, M. Avella, M. Errico, G. Gentile, John Doran, Brian Norton, S. Baluschev, J. Bistué Guardiola, A. Robles Molina, J. Puigdollers, C. Voz, S. Daren, F. Tsvetkov, A. Pashov
Conference Papers
Organic cells and dye-sensitized cells developed to-date have a narrow active absorption range, relative to the spectral range of the available solar resource. Their efficiency could be significantly enhanced through a process of down-shifting (DS) and up-conversion of non-absorbable photons converting them to photons better matching the spectral response of the particular solar cell. The DS molecules must exhibit a large Stokes shift and high luminescent quantum yield when incorporated in the downshifting polymer layer. In this paper, the QY of a downshifting Europium (III) complex in solution is determined using two distinct experimental techniques. The QY is measured for …
On The Use Of A Dynamic Hybrid Tempo Detection Model For Beat Tracking, Mikel Gainza
On The Use Of A Dynamic Hybrid Tempo Detection Model For Beat Tracking, Mikel Gainza
Conference papers
In this paper, an approach that estimates the times at which musical beats occur is presented. The system uses a hybrid multi-band decomposition in order to estimate the music tempo. Following this, beat events are tracked by using a dynamic programming approach, which is updated by using short time tempo estimates. The hybrid decomposition is used in order to calculate the tempo by using different onset detection functions in different frequency bands. In addition, a method that estimates which frequency bands provide reliable periodicities is also presented. The accuracy of the model is evaluated by comparing the presented system against …
Broadening Ethics Teaching In Engineering: Beyond The Individualistic Approach, Eddie Conlon, H. Zandvoort
Broadening Ethics Teaching In Engineering: Beyond The Individualistic Approach, Eddie Conlon, H. Zandvoort
Articles
There is a widespread approach to the teaching of ethics to engineering students in which the exclusive focus is on engineers as individual agents and the broader context in which they do their work is ignored. Although this approach has frequently been criticised in the literature, it persists on a wide scale, as can be inferred from accounts in the educational literature and from the contents of widely used textbooks in engineering ethics. In this contribution we intend to: (1) Restate why the individualistic approach to the teaching of ethics to engineering students is inadequate in view of preparing them …
Quality Indicators For Engineering And Technology Education, Michael Dyrenfurth, Mike Murphy, Gary Bertoline
Quality Indicators For Engineering And Technology Education, Michael Dyrenfurth, Mike Murphy, Gary Bertoline
Conference papers
In recent years the development and use of university rankings, comparisons, and/or league tables has become popular and several methodologies are now frequently used to provide a comparative ranking of universities. These rankings are often based on research and publication activity and also not uncommonly focus on indicators that can be measured rather than those that should be measured. Further, the indicators are generally examined for the university as a whole rather than for university divisions, departments or programs. Implicit also is that placement in the rankings is indicative of quality. This paper provides an overview of the methodologies used …
Ict Innovation Diffusion In Small Logistics Service Providers: An Empirical Survey, Pietro Evangelista, Edward Sweeney, Claudia-Maria Wagner
Ict Innovation Diffusion In Small Logistics Service Providers: An Empirical Survey, Pietro Evangelista, Edward Sweeney, Claudia-Maria Wagner
Conference papers
For companies competing in highly dynamic markets, innovation is considered a fundamental component of a successful business as it allows companies to sustain profit margins, sales growth and reduce competitors’ pressures. Information and communication technology (ICT) is essential innovation enablers especially in service companies. The focus of the paper is on the analysis of the role of ICT in innovation processes of small third-party logistics service providers (3PLs). On the basis of quantitative evidence emerging from a recent survey carried out on the Italian 3PL market, the paper analyses how ICT is used to support innovation and the factors the …
Microwave-Assisted Synthesis Of Zno Micro-Javelins, Suresh Pillai, Declan Mccormack, John M. Kelly, Sibu C. Padmanabhan
Microwave-Assisted Synthesis Of Zno Micro-Javelins, Suresh Pillai, Declan Mccormack, John M. Kelly, Sibu C. Padmanabhan
Articles
The microwave (MW)-assisted formation of ZnO micro-javelins from zinc nitrate and urea in aqueous solution is described. The particles (named as ‘micro-javelins’ because of their high aspect ratio and needle-like tips) grow hexagonally with well-defined facets in the h0110i direction and pointed tips in (0001) direction. Powder X-ray diffraction patterns show the appearance of a strikingly dominant (1000) orientation. Scanning electron microscopy (SEM) and transmission electron microscopy (TEM) investigations reveal the morphological evolution of these hexagonal ZnO particles with time. The effect of precursor concentrations, counterion type andMWirradiation power and their consequent influence on pH and Zn2+ ion concentration are …
Assessing Third Mission Activities, Mike Murphy
Assessing Third Mission Activities, Mike Murphy
Conference papers
No abstract provided.
Development Of A Theoretical Decoupled Stirling Cycle Engine, Barry Cullen, Jim Mcgovern
Development Of A Theoretical Decoupled Stirling Cycle Engine, Barry Cullen, Jim Mcgovern
Conference Papers
The Stirling cycle engine is gaining increasing attention in the current energy market as a clean, quiet and versatile prime mover for use in such situations as solar thermal generation, micro cogeneration and other micro distributed generation situations. A theoretical Stirling cycle engine model is developed. Using a theoretical decoupled engine configuration in which working space swept volume, volume variation, phase angle and dead space ratio are controlled via a black-box electronic controller, a model is developed that is to be used as a tool for analysis of the ideal Stirling cycle engine and the limits on its real world …
Property Price Data Would Stop Values Based On Sentiment, Lorcan Sirr
Property Price Data Would Stop Values Based On Sentiment, Lorcan Sirr
Media
No abstract provided.
Sustainable Design: A Case Study In Energy Systems, Eugene Coyle, Marek Rebow
Sustainable Design: A Case Study In Energy Systems, Eugene Coyle, Marek Rebow
Books/Book chapters
Since the publication of the UN climate report in 2007, most countries now agree that recent climate change has occurred as a result of human intervention and that it will require fast and profound measures to reduce this negative imprint imposed upon nature. Central to this is the need to radically reduce CO2 emissions resulting from combustion of carbon-based energy resources to meet global energy demands. Greater measures must be taken to develop new non-combustion based technologies, in addition to using low-carbon energy resources. Increasing energy efficiency and using energy wisely will also feature in reducing emissions. Sustain-able Energy is …
Digital Supply Chains: Towards A Framework For Software Distribution, Colm Ryan, Claudia-Maria Wagner, Edward Sweeney, Emilio Esposito, Pietro Evangelista
Digital Supply Chains: Towards A Framework For Software Distribution, Colm Ryan, Claudia-Maria Wagner, Edward Sweeney, Emilio Esposito, Pietro Evangelista
Conference papers
This paper assesses the effect of non-physicality of a digital product - software - on SCM practice. A number of in-depth, one-on-one interviews were held in 8 software companies that predominantly supply to enterprise customers on a global scale. The aim was to explore distribution challenges within software supply chains and how companies are addressing these challenges. The research has identified three different classes of software distribution models: One, which tends to rely on traditional physical infrastructures and paradigms, and two others that better exploit the properties of the digital products.
Implications Of Philosophy For Engineering And Engineering Technology Bachelors Programs, Michael Dyrenfurth, Mike Murphy, William Grimson
Implications Of Philosophy For Engineering And Engineering Technology Bachelors Programs, Michael Dyrenfurth, Mike Murphy, William Grimson
Conference papers
This paper raises the question: What is philosophy and then, after describing its branches and school, it extends the definitions to implications for the practice of engineering and engineering technology education. It folds the definitions against the work of engineering faculty. The latter was described as including curriculum development, teaching, mentoring/advising, research/scholarship, and engagement. Sample codes of ethics are shared for engineering technology students and professionals.
An Evolutionary Perspective On Engineering Design, William Grimson, Mike Murphy
An Evolutionary Perspective On Engineering Design, William Grimson, Mike Murphy
Books/Book chapters
No abstract provided.
Modelling Behavioural Antecedents Of Inter-Firm Linkages In The Irish Road Freight Industry: An Application Of The Theory Of Planned Behaviour, Eoin Plant
Doctoral
The Irish road haulage industry exhibits a structure dominated by singlevehicle owner-managed operators. This has implications for the Irish economy through reduced efficiency. It is crucial that Ireland’s transport policies sustain its trade-dependent economy and this study can help inform those policies. The European Union has made a commitment to promoting sustainable mobility through advanced transport logistics. One of the principal areas not previously addressed is that of barriers to ollaboration. This thesis initially examines economies of scale within the road freight industry and argues that collaborative networks can aid sustainable transport and increase efficiencies in logistics. It addresses the …
Liberal Studies In Engineering And Technology, William Grimson, Michael Dyrenfurth, Mike Murphy
Liberal Studies In Engineering And Technology, William Grimson, Michael Dyrenfurth, Mike Murphy
Books/Book chapters
No abstract provided.
Universities Changing In Response To A Volatile Environment: A Case Study From Ireland, Kevin Kelly
Universities Changing In Response To A Volatile Environment: A Case Study From Ireland, Kevin Kelly
Books/Book chapters
This paper is a short summary of a research thesis submitted for a doctoral degree in education in late 2008. The substantive issue investigated was the response of a large higher education institute (HEI) in Ireland, the Dublin Institute of Technology and hereafter referred to as the Institute, to the demands for change. The research was undertaken by an experienced academic from inside the organisation. What is happening in this institute may be significant to others because change in higher education is a key debate throughout the world at present. The research study shows that stakeholders in the Institute acknowledge …
Uniarab: An Universal Machine Translator System For Arabic Based On Role And Reference Grammar, Brian Nolan, Yasser Salem
Uniarab: An Universal Machine Translator System For Arabic Based On Role And Reference Grammar, Brian Nolan, Yasser Salem
Conference Papers
This paper presents a machine translation system (Hutchins 2003) called UniArab (Salem, Hensman and Nolan 2008). It is a proof-of-concept system supporting the fundamental aspects of Arabic, such as the parts of speech, agreement and tenses. UniArab is based on the linking algorithm of RRG (syntax to semantics and vice versa). UniArab takes MSA Arabic as input in the native orthography, parses the sentence(s) into a logical meta-representation based on the fully expanded RRG logical structures and, using this, generates perfectly grammatical English output with full agreement and morphological resolution. UniArab utilizes an XML-based implementation of elements of the Role …
Response Of Academics To Demands For Change In Engineering Education, Kevin Kelly
Response Of Academics To Demands For Change In Engineering Education, Kevin Kelly
Conference papers
This paper attempts to show what academics and other stakeholders think about academic change in an Institute of Technology in Ireland as this HEI attempts to respond to a rapidly changing external s becoming a university and moving to a new campus on a green field site. It is a summary of aspects of a doctoral thesis undertaken by an experienced academic that set out to explore how the unprecedented challenges now facing higher education internationally might best be met in the Dublin Institute of Technology. It is insider research and this paper identifies and examines barriers and enablers to …
Incorporating Spatial Data And Gis To Improve Sea Of Land Use Plans: Opportunities And Limitations: Case Studies In The Republic Of Ireland, Ainhoa Gonzalez Del Campo
Incorporating Spatial Data And Gis To Improve Sea Of Land Use Plans: Opportunities And Limitations: Case Studies In The Republic Of Ireland, Ainhoa Gonzalez Del Campo
Doctoral
This research aimed at establishing whether spatial data and Geographic Information Systems (GIS) can contribute to Strategic Environmental Assessment (SEA). To achieve this, an integrated GISEA approach was developed and applied to a number of spatial planning SEAs in the Republic of Ireland. The practical applicability of the approach was examined, evaluating the potential benefits derived from using spatial data and GIS in SEA and assessing the potential barriers to an effective GIS use. The implementation of the SEA Directive incorporated a new dimension into plan-making by calling for the assessment of potential environmental effects that may derive from implementing …
Developing Effective, Sustainable, Mutually Beneficial International Collaborations In Engineering And Technology, Mike Murphy
Developing Effective, Sustainable, Mutually Beneficial International Collaborations In Engineering And Technology, Mike Murphy
Presentations
No abstract provided.
The Role Of 3pls Internet Technology In Supporting Extended Enterprise: An Exploratory Survey, Pietro Evangelista, Emilio Esposito, Edward Sweeney, Erica Staller
The Role Of 3pls Internet Technology In Supporting Extended Enterprise: An Exploratory Survey, Pietro Evangelista, Emilio Esposito, Edward Sweeney, Erica Staller
Conference papers
It is well accepted that ICT and Internet technology have the potential to facilitate firms’ innovation processes as it offers new and more effective support to conduct business operations. This is particularly true in the context of Extended Enterprise (EE) concept where new technologies are critical in ensuring the effective integration of physical and information flows among participating companies (Dresner et al., 1999). The role of third party logistics providers (3PLs) in logistics outsourcing has evolved along the last few years (McKinnon, 1999). Such companies are transforming their business configuration from simple transport service providers to supply chain integrators. Internet …
The Application Of Web 2.0 Technologies As An Experimental Method Of Teaching Remote Sensing At Dit, Ireland, Avril Behan
The Application Of Web 2.0 Technologies As An Experimental Method Of Teaching Remote Sensing At Dit, Ireland, Avril Behan
Conference Papers
This paper describes the implementation of an experimental method of delivery for a module of remote sensing material to second year students on the BSc (Hons) in Geomatics at the Dublin Institute of Technology. The project began as a reaction to poor levels of student engagement and unsatisfactory grades, as well as the requirement to focus more on real-world type problems due to the implementation of a work-placement semester for third year students. Both pedagogical considerations (movement towards formative feedback, interactivity and group-based work) and the effect of technological drivers, such as the popularity of the internet in general and …
Metrology And Proportion In The Ecclesiastical Architecture Of Medieval Ireland, Avril Behan, Rachel Moss
Metrology And Proportion In The Ecclesiastical Architecture Of Medieval Ireland, Avril Behan, Rachel Moss
Conference Papers
The aim of this paper is to examine the extent to which detailed empirical analysis of the metrology and proportional systems used in the design of Irish ecclesiastical architecture can be analysed to provide historical information not otherwise available. Focussing on a relatively limited sample of window tracery designs as a case study, it will first set out to establish what, if any, systems were in use, and then what light these might shed on the background, training and work practices of the masons, and, by association, the patrons responsible for employing them.
High-Rise As Only Answer Is Tall Tale, Lorcan Sirr, Conor Skehan
High-Rise As Only Answer Is Tall Tale, Lorcan Sirr, Conor Skehan
Media
No abstract provided.
Proactive Planning Will Make Most Of Regional Differences, Lorcan Sirr, Conor Skehan
Proactive Planning Will Make Most Of Regional Differences, Lorcan Sirr, Conor Skehan
Media
No abstract provided.
Planning For A Future That Is Going To Happen, Not Against It, Lorcan Sirr, Conor Skehan
Planning For A Future That Is Going To Happen, Not Against It, Lorcan Sirr, Conor Skehan
Media
No abstract provided.
Look After The Risks, Ask The Right Questions – And Know How To Get Out, Lorcan Sirr
Look After The Risks, Ask The Right Questions – And Know How To Get Out, Lorcan Sirr
Media
No abstract provided.
An Integrated Approach To The Teaching Of Numerical Methods To Engineering Students, Garrett Keane, Michael Carr, Patrick Carroll
An Integrated Approach To The Teaching Of Numerical Methods To Engineering Students, Garrett Keane, Michael Carr, Patrick Carroll
Conference papers
In Technological University Dublin, historically, numerical methods were taught to engineering students using a format of traditional mathematics lectures, to a large class group consisting of students from five different engineering disciplines, complemented by small class tutorials. Assessment was by a single, written exam only.
In order to improve the overall effectiveness of the students’ learning experience, it was deemed beneficial to also introduce practical computing classes in which the students would be required to apply the general mathematical methods covered in lectures to discipline-specific examples.
Three different practical computing assignments were devised for the students to undertake, and 20% …
Extended Nonnegative Tensor Factorisation Models For Musical Sound Source Separation, Derry Fitzgerald, Matt Cranitch, Eugene Coyle
Extended Nonnegative Tensor Factorisation Models For Musical Sound Source Separation, Derry Fitzgerald, Matt Cranitch, Eugene Coyle
Articles
Recently, shift-invariant tensor factorisation algorithms have been proposed for the purposes of sound souce separation of pitched musical instruments. However, in practice, existing alogorithsm require the use of log-frequency spectrograms to allow shift invariance in frequency which causes problems when attempting to resynthesise the separated sources. Further, it is difficult to impose harmonicity constraints on the recovered basis functions. This paper proposes a new additive synthesis-based approach which allows the use of linear-frequency spectrograms as well as imposing strict harmonic constraints, resulting in an improved model. Futher, these additional constraints allow the addition of a source filter model to the …
Preparation And Accreditation Of Level 7 Engineering Programmes, Mark Mcgrath
Preparation And Accreditation Of Level 7 Engineering Programmes, Mark Mcgrath
Conference Papers
Accreditation of 3rd level educational programmes by a suitably recognised professional body is of particular relevance in relation to engineering. The completion of a sequence of modules which leads to the attainment of this professionally recognised award is viewed as integral to the undertaking. The engineering technology fields are developing and expanding rapidly and the third level sector must keep abreast of these changes. This is essential if the third level institutions wish to continue delivering programmes which produce graduates who can successfully complete the transition from 3rd. Level to the various engineering sectors.
This paper outlines various aspects …