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Articles 1 - 30 of 42
Full-Text Articles in Engineering
Improving The Sustainability Of The Built Environment By Training Its Workforce In More Efficient And Greener Ways Of Designing And Constructing Through The Horizon2020 Bimcert Project, Barry Mcauley, Avril Behan
Improving The Sustainability Of The Built Environment By Training Its Workforce In More Efficient And Greener Ways Of Designing And Constructing Through The Horizon2020 Bimcert Project, Barry Mcauley, Avril Behan
Conference papers
The construction industry consumes up to 50% of mineral resources excavated from nature, generates about 33% of CO2 present in the atmosphere and is responsible for 40% of total global energy through both construction and operation of buildings. The realisation that current pervasive construction practices now face globalization, sustainability, and environmental concerns, as well as ever-changing legislation requirements and new skills needed for the information age has resulted in technologies such as Building Information Modelling (BIM) becoming a key enabler in navigating these barriers. To assist in overcoming these barriers, a number of funding initiatives have been put in place …
Centres Of Excellence And Roadmaps For Digital Transition: Lessons For Ireland’S Construction Industry, Barry Mcauley, Alan Hore, Roger West
Centres Of Excellence And Roadmaps For Digital Transition: Lessons For Ireland’S Construction Industry, Barry Mcauley, Alan Hore, Roger West
Conference papers
Like most sectors in today’s working world, construction businesses are challenged to work in an increasingly digitised world with sophisticated demands from intelligent clients. So much has been written about the inefficiencies of the construction industry, its fragmentation, lack of collaboration, low margins, adversarial pricing, poor productivity, financial fragility, lack of research and development, poor industry image and relatively weak use of digital solutions. The Irish government recognises the importance of digital innovation to address many of the challenges the construction industry faces. With recent high profile reports of escalating spend on signature public sector projects and weak productivity performance …
Bim In Ireland 2019: A Study Of Bim Maturity And Diffusion In Ireland, Barry Mcauley, Alan Hore, Roger West
Bim In Ireland 2019: A Study Of Bim Maturity And Diffusion In Ireland, Barry Mcauley, Alan Hore, Roger West
Conference papers
In 2017, the BIM Innovation Capability Programme team applied five macro BIM maturity conceptual models to capture the capability of the Irish construction industry and assess its BIM maturity. The results found that while Ireland is mature for modelling processes, it is less developed with regards to collaboration processes and policies. Ireland also ranked poorly when it came to regulatory frameworks, measurements and benchmarks compared to a number of countries which also applied the same conceptual models. At the time, the findings highlighted that Ireland’s diffusion dynamic was middle out, meaning that larger organisations or industry associations were pushing the …
An Investigation Into Current Procurement Strategies That Promote Collaboration Through Early Contractor Involvement With Regards To Their Suitability For Irish Public Work Projects, Barry Mcauley, Frederic Lefebvre
An Investigation Into Current Procurement Strategies That Promote Collaboration Through Early Contractor Involvement With Regards To Their Suitability For Irish Public Work Projects, Barry Mcauley, Frederic Lefebvre
Conference papers
Previous research has established that multi-disciplinary collaboration will benefit a construction project throughout its lifecycle. While Lean Construction, Building Information Modelling (BIM), and Integrated Project Delivery (IPD) can all be viewed as separate processes which add independent value to a project, they are more effective when used in partnership with each other. In order to ensure the high levels of collaboration expected for these processes to work in unison, the early involvement of the Contractor is paramount. Early contractor involvement within the design process can ensure a more focused integrated project team, improvement of both constructability and cost certainty, as …
From Roadmap To Implementation: Lessons For Ireland’S Digital Construction Programme, Barry Mcauley, Alan Hore, Roger West
From Roadmap To Implementation: Lessons For Ireland’S Digital Construction Programme, Barry Mcauley, Alan Hore, Roger West
Conference papers
As part of their Future of Construction initiative in 2018 the World Economic Forum published an action plan to accelerate Building Information Modelling adoption. The WEF report highlighted actions that companies, industry organisations and governments are advised to implement to accelerate BIM adoption and better capitalise on delivering better project outcomes. According the authors of the report BIM is seen as the centrepiece of the construction industry’s digital transformation, however they acknowledged that BIM adoption globally remain slow. Anecdotal experience would suggest that BIM usage in Ireland is also very low and that a similar initiative or an adaptation of …
Delivering Energy Savings For The Supply Chain Through Building Information Modelling As A Result Of The Horizon 2020 Energy Bimcert Project, Barry Mcauley, Avril Behan
Delivering Energy Savings For The Supply Chain Through Building Information Modelling As A Result Of The Horizon 2020 Energy Bimcert Project, Barry Mcauley, Avril Behan
Conference papers
The global buildings sector is now responsible for 40% of final energy consumption as well as accounting for 33% of energy-related carbon dioxide emissions. This has resulted in a growing urgency to address energy and emissions from buildings and construction, to meet restrictive 2020 targets as specified by the European Union (EU). To achieve these targets a number of funding initiatives have been put in place through Horizon 2020 with a focus on BIM, due to it having the potential to rapidly produce energy outputs that enable design teams to analyse and compare the most cost-effective, energy-efficient options. However, despite …
Modelling The Addition Of Limestone In Cement Using Hydcem, Niall Holmes, Denis Kelliher, Mark Tyrer
Modelling The Addition Of Limestone In Cement Using Hydcem, Niall Holmes, Denis Kelliher, Mark Tyrer
Conference papers
Hydration models can aid in the prediction, understanding and description of hydration behaviour over time as the move towards more sustainable cements continues.
HYDCEM is a new model to predict the phase assemblage, degree of hydration and heat release over time for cements undergoing hydration for any w/c ratio and curing temperatures up to 450C. HYDCEM, written in MATLAB, complements more sophisticated thermodynamic models by predicting these properties over time using user-friendly inputs within one code. A number of functions and methods based on up to date cement hydration behaviour from the literature are hard-wired into the code along with …
Competitive Strategies In Small And Medium Sized Enterprises (Sme's): A Cross- Case Analysis Of Irish Construction Professional Service Firms, Oluwasegun O. Seriki, Roisin Murphy
Competitive Strategies In Small And Medium Sized Enterprises (Sme's): A Cross- Case Analysis Of Irish Construction Professional Service Firms, Oluwasegun O. Seriki, Roisin Murphy
Conference papers
Strategy formulation aims to attain strategic fit between an organisation and its business environment in pursuit of competitive advantage. Although competitive strategy research is long established within industries such as manufacturing, financial services and IT, strategy within construction is still under-investigated by comparison. For construction professional service firms (CPSFs), the dearth of academic inquiry is even more apparent, partly due to the intangible nature of their service offerings, highly customised nature of their services and reliance on intellectual capital. The Irish construction sector is experiencing stable growth since following a prolonged recession, thus understanding the strategy process within professional service …
Hydcem: A New Cement Hydration Model, Niall Holmes, Denis Kelliher, Mark Tyrer
Hydcem: A New Cement Hydration Model, Niall Holmes, Denis Kelliher, Mark Tyrer
Conference papers
Hydration models are useful to predict, understand and describe the behaviour of different cementitious-based systems. They are indispensable for undertaking long-term performance and service life predictions for existing and new products for generating quantitative data in the move towards more sustainable cements while optimising natural resources. One such application is the development of cement-based thermoelectric applications.
HYDCEM is a new model to predict the phase assemblage, degree of hydration, heat release and changes in pore solution chemistry over time for cements undergoing hydration for any w/c ratio and curing temperatures up to 450C. HYDCEM, written in MATLAB, is aimed at …
Development Of A Framework To Support The Effective Adoption Of Bim In The Public Sector: Lessons For Ireland, Shiyao Kuang, Alan Hore, Barry Mcauley, Roger West
Development Of A Framework To Support The Effective Adoption Of Bim In The Public Sector: Lessons For Ireland, Shiyao Kuang, Alan Hore, Barry Mcauley, Roger West
Conference papers
Building Information Modelling (BIM) has been formally adopted by many countries with the promise of creating greater economic, social and sustainability benefits. Several authors and institutions have presented alternative BIM policies and tactics which have been adopted by developed countries. However, there is evidence to indicate that BIM adoption theories are not well established and, in particular, the linkage between BIM public sector adoption strategy outcomes and their contribution to achieving Government policy objectives are underdeveloped. This paper will present the outcome of the first phase of a systematic literature review of published studies (including journal papers and noteworthy international …
Re-Annotation Of Cough Events In The Ami Corpus, Paul Leamy, Damon Berry, David Dorran, Ted Burke
Re-Annotation Of Cough Events In The Ami Corpus, Paul Leamy, Damon Berry, David Dorran, Ted Burke
Conference papers
Cough sounds act as an important indicator of an individual's physical health, often used by medical professionals in diagnosing a patient's ailments. In recent years progress has been made in the area of automatically detecting cough events and, in certain cases, automatically identifying the ailment associated with a particular cough sound. Ethical and sensitivity issues associated with audio recordings of coughs makes it more difficult for this data to be made publicly available. However, without the public availability of a reliable database of cough sounds, developments in the area of audio event detection are likely to be hampered. The purpose …
Problem Based Learning: A Case Study From Mechanical Engineering, Kevin Delaney, Ger Nagle
Problem Based Learning: A Case Study From Mechanical Engineering, Kevin Delaney, Ger Nagle
Conference papers
Engineering graduates today must be capable of much more than solving technical problems taught in engineering school. Despite learning to quantify the performance of certain engineering objects, undergraduate students find it challenging to integrate these elements into basic design concepts through a coherent and systematic design process. To help students develop real-world engineering skills as part of their engineering education, the Mechanical Engineering Discipline in Technological University Dublin (TU Dublin) introduced Problem Based Learning (PBL) for Third Year Mechanical Engineering students in 2005.
A recent review of this teaching approach highlighted deficiencies not envisaged when the initial PBL module was …
Graduate Engineering Skills A Literature Review & Call For Rigorous Methodological Approaches, Una Beagon, Darren Carthy, Brian Bowe
Graduate Engineering Skills A Literature Review & Call For Rigorous Methodological Approaches, Una Beagon, Darren Carthy, Brian Bowe
Conference papers
What sort of working world do our engineering graduates face? Engineering has become a global profession, where professional skills are as important as the intellectual prowess gained by obtaining the qualification itself. First, we must consider what skills are needed for engineers to meet the challenges of Industry 4.0. Academics who wish to engage in activities to enhance engineering education might therefore initially seek to identify which skills are most important and there is a wealth of literature addressing different viewpoints which adds further complexity to evaluating such studies. This paper reports on two independent systematic reviews of literature to …
A Review Of 3d Gis For Use In Creating Virtual Historic Dublin, Alain Chenaux, Maurice Murphy, S. Pavia, S. Fai, T. Molnar, John Cahill, Shane Lenihan, A. Corns
A Review Of 3d Gis For Use In Creating Virtual Historic Dublin, Alain Chenaux, Maurice Murphy, S. Pavia, S. Fai, T. Molnar, John Cahill, Shane Lenihan, A. Corns
Conference papers
This paper illustrates how BIM integration with GIS is approached as part of the workflow in creating Virtual Historic Dublin. A design for a WEB based interactive 3D model of historic buildings and centres in Dublin City (Virtual Historic Dublin City) paralleling smart city initiates is now under construction and led by the National Monuments at the Office of Public Works in Ireland. The aim is to facilitate the conservation and maintenance of historic infrastructure and fabric and the dissemination of knowledge for education and cultural tourism using an extensive Historic Building Information Model. Remote sensing data is now processed …
Task Based Risk Assessment For Human Factors Impact On Aviation Maintenance Deviations: A Case Study On Three Specific Tasks And Their Operational Implications, Stephen Caffrey, Laís Veloso Lara, Christopher Murtagh, Maria Chiara Leva, Victor Hrymak
Task Based Risk Assessment For Human Factors Impact On Aviation Maintenance Deviations: A Case Study On Three Specific Tasks And Their Operational Implications, Stephen Caffrey, Laís Veloso Lara, Christopher Murtagh, Maria Chiara Leva, Victor Hrymak
Conference papers
This paper investigates human performance on a set of selected tasks in an aviation maintenance organisation, where a significant prevalence of unsafe acts and conditions were observed. The methodology began with visual inspections of the work environment. Semi structured interviews were then undertaken to gain an insight into the job demands and critical issues reported by front line operators. Three representative critical tasks were then selected for a detailed task analysis. This fed into a task based risk assessment that mapped out safety critical deviations together with timelines for nominal and deviation paths. The likelihood and severity of potential outcomes …
A Phenomenographic Study To Investigate What We Mean By The Term “Professional Skills” – Preliminary Findings, Una Beagon, B. Bowe
A Phenomenographic Study To Investigate What We Mean By The Term “Professional Skills” – Preliminary Findings, Una Beagon, B. Bowe
Conference papers
Recent calls for reform of engineering education have highlighted the importance of treating the engineering education system holistically; not only looking at developing curriculum components nor proposing new teaching pedagogies to enhance graduate skills. One aspect of this holistic view, which has not been given due cognisance is the impact that academic conceptions can have on the experience of the student in the educational system. The authors propose that academics teaching on engineering programmes do not share a common understanding of what we mean by “professional skills”, nor assume the same teaching and learning processes which develop these skills. It …
Background And Design Of A Qualitative Study On Globally Responsible Decision-Making In Civil Engineering, Shannon Chance, Ines Direito, Rob Lawlor, Katie Cresswell-Maynard, Jon Pritchard, Nick Tyler, John Mitchell
Background And Design Of A Qualitative Study On Globally Responsible Decision-Making In Civil Engineering, Shannon Chance, Ines Direito, Rob Lawlor, Katie Cresswell-Maynard, Jon Pritchard, Nick Tyler, John Mitchell
Conference papers
Organizations that regulate civil engineering have been pressing for integration of 'global responsibility' into higher education curricula since around 2006, with a goal of achieving environmental sustainability and social justice. In an effort led by the American Society of Civil Engineers (ASCE, 2007, 2009), a global vision for civil engineering was identified. Within the UK, the Institution of Civil Engineers (ICE) has been leading the way alongside non-governmental organizations (Bourn & Neal, 2008). Via the in-progress study reported here, a UK-based research team is now studying the effects of ACSE and ICE initiatives. The team seeks to benchmark how global …
Assessing The Grit And Mindset Of Incoming Engineering Students With An Emphasis On Gender, Ines Direito, Shannon Chance, Emanuela Tilley, John Mitchell
Assessing The Grit And Mindset Of Incoming Engineering Students With An Emphasis On Gender, Ines Direito, Shannon Chance, Emanuela Tilley, John Mitchell
Conference papers
Engineering programs can be very demanding, particularly in the first years where students encounter new forms of highly challenging coursework. To better prepare and support students, educators must acknowledge non-academic factors, such as the role of self-beliefs and personal attributes. Education research suggests that students are more likely to give up and disengage from their studies when they lack grit or assume a fixed mindset. Previous studies suggest that female students are generally grittier but less confident when compared to male students. This paper presents the initial work of an ongoing study to explore self-confidence and motivations to study engineering …
A Demographic Picture Of Academics Teaching On Engineering Programmes In Ireland And Their Approaches To Teaching (Ati)., Una Beagon, Brian Bowe
A Demographic Picture Of Academics Teaching On Engineering Programmes In Ireland And Their Approaches To Teaching (Ati)., Una Beagon, Brian Bowe
Conference papers
This paper presents the results of an online survey (n=293) carried out on academics teaching on engineering programmes in Ireland in 2017/18. The primary purpose of the survey was to provide a selection pool for interviewees in a separate phenomenographic study, however the survey also provided some interesting findings. Previously, there has been little published data on the diversity of personnel teaching on engineering programmes in Ireland and this paper aims to provide an insight. In addition to collating the demographics of the survey respondents, and their background experiences in academic and industry, the Approaches to Teaching Inventory (ATI) [1] …
Engineering Skills Requirements: A Systematic Literature Review (2009-2016), Una Beagon, Brian Bowe
Engineering Skills Requirements: A Systematic Literature Review (2009-2016), Una Beagon, Brian Bowe
Conference papers
No abstract provided.
Influence Of Limit Equilibrium Methods In The Design Of Contiguous Cantilever Sheet Pile Walls Through Reliability-Based Analysis, Alvaro J. Mattos, Juan Camilo Viviescas, Juan Pablo Osorio
Influence Of Limit Equilibrium Methods In The Design Of Contiguous Cantilever Sheet Pile Walls Through Reliability-Based Analysis, Alvaro J. Mattos, Juan Camilo Viviescas, Juan Pablo Osorio
Conference papers
In geotechnical engineering the design of bored- pile walls is commonly performed in terms of the embedment length (D) defined according to the limit equilibrium methods (also known as balance methods) formulated by Krey, Blum, Rowe, Hansen and the empirical method of Look in sandy soils. The limit equilibrium methods are calculations associated with the shape of the earth pressures distributions in the shaft, earth pressures theories, geotechnical properties and safety factors, while the empirical criteria establish that the relationship between embedment and the free height (H) is of the order of D/H = 1.5. These design methods are complemented …
The Chirp Function Revisited: A Uniqueness Conjecture For Chirplet Modulation, Jonathan Blackledge, Paul Tobin
The Chirp Function Revisited: A Uniqueness Conjecture For Chirplet Modulation, Jonathan Blackledge, Paul Tobin
Conference papers
The chirp function (a unit amplitude quadratic phase-only function with linear frequency modulation) is well known and is used in a wide range of applications including radar, digital communications, information coding and hiding and many other forms of signal and image processing. This is because the chirp provides an optimal solution to the problem of retrieving information from low energy signals with a low Signal-to-Noise Ratio (SNR). The chirp function also occurs in the solution to many mathematical models used to describe the propagation and scattering of waves (in the Fresnel zone), in quantum mechanics (the quantum shutter problem) and …
The Deployment Of An Iot Network Infrastructure, As A Localised Regional Service, John Fox, Andrew Donnellan, Liam Doumen
The Deployment Of An Iot Network Infrastructure, As A Localised Regional Service, John Fox, Andrew Donnellan, Liam Doumen
Conference papers
The Internet of things (IoT) is fast evolving with a wide range of technologies being designated specifically as IoT solutions. Studies on such solutions generally reference the specific communication medium while negating the complete architecture of the IoT system. From a system perspective, a complete IoT solution can be separated into three categories, the data collector, the communication method and the cloud platform service. The data collector relates to the embedded system device (or the `things' element) at the source of the application, the communication method relates to the network protocol used to send or receive the data and the …
Sliding Mode Control Strategy For Three-Phase Three-Level T-Type Shunt Active Power Filters, Hasan Komurcugil, Sertac Bayhan, Samet Biricik
Sliding Mode Control Strategy For Three-Phase Three-Level T-Type Shunt Active Power Filters, Hasan Komurcugil, Sertac Bayhan, Samet Biricik
Conference papers
In this paper, a sliding mode control (SMC) strategy is proposed for three-phase three-level T-type shunt active power filters (SAPF). The proposed control strategy has the ability to balance the capacitor voltages with respect to the neutral-point. The proposed SMC strategy is formulated in the natural frame which eliminates abc/dq transformation and two PI controllers compared to the design in the dq frame. In natural frame, only one PI controller is needed to generate the amplitude of grid current reference. The output of the PI controller is multiplied by the unity sinusoidal waveforms, obtained from the grid voltages, so as …
Three-Phase Two-Leg T-Type Converter Based Active Power Filter, Samet Biricik, Hasan Komurcugil, Mohamed Trabelsi
Three-Phase Two-Leg T-Type Converter Based Active Power Filter, Samet Biricik, Hasan Komurcugil, Mohamed Trabelsi
Conference papers
In this work, a three-phase two-leg T-type active power filter topology is investigated when a three-level hysteresis band current modulation technique is applied. The three-phase two-leg T-type configuration which utilizes eight switching devices together split DC link capacitor banks is able to improve the reliability of the system as well as effectively reduces the power losses. The compensation of the current harmonics at each phase are achieved successfully with the control of phase-a and phase-b. Using this technique, the phase-c is directly connected to the midpoint of the split capacitors, which eliminates the necessity of additional control on the phase-c. …
Demand Response And Consumer Inconvenience, Chittesh Veni Chandran, Malabika Basu, Keith Sunderland
Demand Response And Consumer Inconvenience, Chittesh Veni Chandran, Malabika Basu, Keith Sunderland
Conference papers
Balancing the energy demand and generation using the latest load management technologies is considered as an immediate requirement for peak demand management and to improve the operation of electrical distribution networks. However, load management technologies depriving consumers of utilizing their personal resources could be perceived as a consumer right violation by many consumers, and thus, the success of the program is significantly dependent on consumer satisfaction. This paper probes consumer engagement plans through an algorithm to minimize the consumer inconvenience caused by the load management/demand response (DR) program. Four different consumer engagement plans are proposed for consumers with different tolerance …
Impact On Distribution System Protection With The Integration Of Eg On The Distribution Network, Jane Courtney, Aaron Mcdonnell
Impact On Distribution System Protection With The Integration Of Eg On The Distribution Network, Jane Courtney, Aaron Mcdonnell
Conference papers
A significant increase in EG connections on the distribution network over the past decade in Ireland has presented challenges to the Distribution System Operator (DSO). The connection of EG can cause co-ordination of Distance protection to be altered and has resulted in variations in short circuit levels. Multidirectional power flow has been introduced into a Distribution system that was not designed for the direction change in current flow. The impact of connecting EG to a typical 38 kV Distribution Network was demonstrated as part of this study. Increasing fault levels and protection co-ordination selectivity problems were identified when the network …
Reliability Issues Caused By The Retirement Of Large Thermal Generation Facilities: An Irish Case Study, Kyle Lawson, Jane Courtney
Reliability Issues Caused By The Retirement Of Large Thermal Generation Facilities: An Irish Case Study, Kyle Lawson, Jane Courtney
Conference papers
Like all developed countries Ireland faces increasing pressure to reduce their carbon footprint. Part of the governments plans include the scaling back of fossil fuel generation facilities and increasing renewable resources. Moneypoint is Irelands only coal fired generation station. In 2025 Moneypoint is due to reach the end of its life cycle. At this point the Irish government will have to make a decission on the future of the generation facility. Currently Moneypoint is responsible for the generation of approximately 10 % of Irelands energy needs. In this paper, the removal of Moneypoint from the Irish generation portfolio will be …
Phase-Only Digital Encryption Using A Three-Pass Protocol, Jonathan Blackledge, Paul Tobin, W. Govere, S. Sibanda, C. M. Adolfo
Phase-Only Digital Encryption Using A Three-Pass Protocol, Jonathan Blackledge, Paul Tobin, W. Govere, S. Sibanda, C. M. Adolfo
Conference papers
Abstract—This paper considers an application of phase-only digital encryption to the three-pass protocol leading to a new ‘nokey- exchange algorithm’. After providing a study on the theoretical background to the method, an algorithm is presented on a step-by-step basis together with three examples of cryptanalysis. A prototype MATLAB function is provided for validation of the approach and for further development by interested readers.
Photovoltaic Supplied T-Type Three- Phase Inverter With Harmonic Current Compensation Capability, Zahera Batool, Samet Biricik, Hasan Komurcugil, Tuan Ngo, Tuyen V. Vu
Photovoltaic Supplied T-Type Three- Phase Inverter With Harmonic Current Compensation Capability, Zahera Batool, Samet Biricik, Hasan Komurcugil, Tuan Ngo, Tuyen V. Vu
Conference papers
In this paper, a T-Type grid-connected inverter with harmonic current compensation capability is proposed and studied for the on-grid photovoltaic (PV) systems. This idea is based on the modification of the existing photovoltaic inverter control algorithm with the adaptation of active power filter control algorithm. The grid-connected PV inverter has similar topology and control methods as that of the active power filter systems. However, such multifunctional inverters have not yet matured for commercial use and call for more research. In this work, a conventional phase locked-loop algorithm is used to determine the angular position of the synchronous reference of the …