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Articles 31 - 60 of 62
Full-Text Articles in Engineering
Design Of A Community-Supported Capable Microwave System For People With Intellectual And Physical Disabilities, Matteo Zallio, Damon Berry, Paula Kelly, Hicham Rifai, Modestas Jakuska
Design Of A Community-Supported Capable Microwave System For People With Intellectual And Physical Disabilities, Matteo Zallio, Damon Berry, Paula Kelly, Hicham Rifai, Modestas Jakuska
Conference papers
Product personalisation has become a central topic and expected part of every day life. Different people have different characteristics and abilities and every single user has different needs which means that products have to be tailored accordingly. Micro- wave ovens are one of the most commonly used home appliances. People use them to quickly heat or cook certain foods. Today, according to the US Bureau of Labor Statis- tics, more than 90% of U.S. households own a microwave oven [11]. This project seeks to enable people with intellectual disabilities and physical impairments to perform sim- ple cooking tasks. The target …
Current State Of The Art Historic Building Information Modelling, Conor Dore, Maurice Murphy
Current State Of The Art Historic Building Information Modelling, Conor Dore, Maurice Murphy
Conference papers
In an extensive review of existing literature a number of observations were made in relation to the current approaches for recording and modelling existing buildings and environments: Data collection and pre-processing techniques are becoming increasingly automated to allow for near real-time data capture and fast processing of this data for later modelling applications. Current BIM software is almost completely focused on new buildings and has very limited tools and pre-defined libraries for modelling existing and historic buildings. The development of reusable parametric library objects for existing and historic buildings supports modelling with high levels of detail while decreasing the modelling …
Smart Motorway Innovation For Achieving Greater Safety And Hard Shoulder Management, Nicola Callaghan, Thomas Avery, Mark Mulville
Smart Motorway Innovation For Achieving Greater Safety And Hard Shoulder Management, Nicola Callaghan, Thomas Avery, Mark Mulville
Conference papers
"Smart" motorways are becoming more prevalent through technology-driven approaches such as active traffic management (ATM) systems, hard shoulder management (HSM) control systems and digital enforcement cameras. Such technologies are able to monitor and respond to fluctuating traffic conditions by altering the speed limit to smooth traffic flow, activate warning signs to alert users of hazards up ahead and permit the use of the hard shoulder, either permanently or at peak times. This paper investigates smart motorways as a way of reducing congestion achieving greater road safety and improving hard shoulder management. This research is one of the first which deals …
Linking Geospatial Engineering Into Collaborative Multidisciplinary Bim Projects - An Educational Perspective, Avril Behan, Helen Murray, Jonathan Argue, Ronan Hogan, Audrey Martin, Pat O'Sullivan, Robert Moore, Malachy Mathews
Linking Geospatial Engineering Into Collaborative Multidisciplinary Bim Projects - An Educational Perspective, Avril Behan, Helen Murray, Jonathan Argue, Ronan Hogan, Audrey Martin, Pat O'Sullivan, Robert Moore, Malachy Mathews
Conference papers
This paper describes the background to and execution of a postgraduate project undertaken by students on DIT's MSc in Geospatial Engineering (GeoEng) in support of a project on level 2 BIM being undertaken by students on the MSc in applied Building Information Modelling & Management (aBIMM) around the retrofit of and new build extension to the Grangegorman Clock Tower Building. In support of this requirement, an external and internal survey of the existing structure and its surrounding topography was required. The aBIMM students and staff acted as the Design Team who subcontracted the Geo Eng group who were organised into …
A Review Of Approaches To Solving The Problem Of Bim Search: Towards Intelligence-Assisted Design, Hamed Khademi, Avril Behan
A Review Of Approaches To Solving The Problem Of Bim Search: Towards Intelligence-Assisted Design, Hamed Khademi, Avril Behan
Conference papers
Due to the growing adoption of BIM and the rising popularity of cloud computing, BIM models are increasingly stored in central cloud repositories or Common Data Environments. Effective management and exploitation of these models creates the requirement for BIM retrieval systems. Thus far, the BIM industry has utilized general-purpose, text-based search techniques that operate on BIM metadata. This paper highlights the need for a domain-specific BIM search engine and reviews various approaches to address the problem of BIM search. Three main approaches were identified as context-, geometry-, and content-based BIM retrieval. For a comprehensive BIM retrieval system, all three approaches …
A Longitudinal Study Of Middle Eastern Women’S Experiences Studying Engineering Abroad: Emerging Results, Shannon Chance, Bill Williams, Allison Wagner
A Longitudinal Study Of Middle Eastern Women’S Experiences Studying Engineering Abroad: Emerging Results, Shannon Chance, Bill Williams, Allison Wagner
Conference papers
What is it like to study engineering in Ireland when you are female and you come from somewhere far away, in the Middle East, which has different social customs and norms? What is the lived experience? What aspects of the experience are common to all Middle Eastern women enrolled in your course? As education researchers, we aim to understand the essence of the experience such women have had studying engineering Ireland; we focus on what life has been like for them and what unique challenges they have faced that may be invisible to us as instructors. In this work-in-progress, a …
Thermal Mass Performance Of Concrete Panels Incorporated With Phase Change Materials, Dervilla Niall, Roger West, Oliver Kinnane, Sarah Mccormack
Thermal Mass Performance Of Concrete Panels Incorporated With Phase Change Materials, Dervilla Niall, Roger West, Oliver Kinnane, Sarah Mccormack
Conference papers
Using the mass of a building as a thermal storage system can reduce the demand on the auxiliary heating and cooling systems of the building. Concrete combines a high specific heat capacity with a thermal conductivity that is appropriate for the diurnal heating and cooling cycle of buildings. The heat storage capacity of concrete can be enhanced by adding phase change materials (PCMs) which provide a high latent heat storage capacity. However the addition of PCM to concrete reduces the conductivity of the concrete which may affect the ability of a PCM-concrete panel to absorb and release heat within the …
Simulation And Analysis Of Switched Reluctance Generator For Renewable Energy Applications, Simone Sartori, Malabika Basu, Michael Farrell, Andrea Tortella
Simulation And Analysis Of Switched Reluctance Generator For Renewable Energy Applications, Simone Sartori, Malabika Basu, Michael Farrell, Andrea Tortella
Conference papers
The purpose of the paper is to investigate the application of a Switched Reluctance Generator (SRG) for future wave energy converters. This machine presents some favourable features as compared to others. The machine optimal operation can be obtained after a detailed assessment of the control strategy. For this purpose, a SRG model is implemented in Matlab® Simulink® environment to find out the values of the switching angles which maximize the converted power and to set up an appropriate control of the power exchange with the grid to which the machine is connected. The simulation results provide evidence that a proper …
A Project-Based-Learning Approach To Teaching Second-Order Differential Equations To Engineers, Michael Carr, Eabhnat Ní Fhloinn
A Project-Based-Learning Approach To Teaching Second-Order Differential Equations To Engineers, Michael Carr, Eabhnat Ní Fhloinn
Conference papers
In an attempt to increase engagement in a third-year mechanical-engineering mathematics module, a series of group-work sessions were introduced on a single topic. Students were asked to use the solution of a second-order differential equation (previously introduced in lectures) to solve a problem in which they must design a simple spring-damper system for one of a lorry, digger, truck, tractor, car, motorbike or pogo stick. This project was worth 10% of the module and done in groups of four. The groups gave an oral presentation of their results and a written report was handed up for grading. A detailed description …
Armagh Observatory: Historic Building Information Modelling For Virtual Learning In Building Conservation, Maurice Murphy, Alain Chenaux, Garrett Keenaghan, V. Gibson, John Butler, C. Pybusr
Armagh Observatory: Historic Building Information Modelling For Virtual Learning In Building Conservation, Maurice Murphy, Alain Chenaux, Garrett Keenaghan, V. Gibson, John Butler, C. Pybusr
Conference papers
In this paper the recording and design for a Virtual Reality Immersive Model of Armagh Observatory is presented, which will replicate the historic buildings and landscape with distant meridian markers and position of its principal historic instruments within a model of the night sky showing the position of bright stars. The virtual reality model can be used for educational purposes allowing the instruments within the historic building model to be manipulated within 3D space to demonstrate how the position measurements of stars were made in the 18th century. A description is given of current student and researchers activities concerning on-site …
Investigation Into The Local Nature Of Rate Of Change Of Frequency In Electrical Power Systems, Damien Doheny, Michael Conlon
Investigation Into The Local Nature Of Rate Of Change Of Frequency In Electrical Power Systems, Damien Doheny, Michael Conlon
Conference papers
In recent years power systems world-wide have seen large increases in wind power penetration and this trend is expected to continue. This is having the undesirable consequence of reducing the inertia of electrical power systems, especially at times of high wind generation. Reduced inertia makes a power system more susceptible to a larger rate of change of frequency (RoCoF) following a grid disturbance, such as the sudden disconnection of a load or generator. High RoCoF events could trigger generator protective devices or anti-islanding RoCoF relays, disconnecting generation from the grid, compounding the initial grid disturbance and in extreme cases result …
Bacterial Foraging Optimized Statcom For Stability Assessment In Power System, Shiba Paital, Prakash Ray, Asit Mohanty, Sandipan Patra, Harishchandra Dubey
Bacterial Foraging Optimized Statcom For Stability Assessment In Power System, Shiba Paital, Prakash Ray, Asit Mohanty, Sandipan Patra, Harishchandra Dubey
Conference papers
This paper presents a study of improvement in stability in a single machine connected to infinite bus (SMIB) power system by using static compensator (STATCOM). The gains of Proportional-Integral-Derivative (PID) controller in STATCOM are being optimized by heuristic technique based on Particle swarm optimization (PSO). Further, Bacterial Foraging Optimization (BFO) as an alternative heuristic method is also applied to select optimal gains of PID controller. The performance of STATCOM with the above soft-computing techniques are studied and compared with the conventional PID controller under various scenarios. The simulation results are accompanied with performance indices based quantitative analysis. The analysis clearly …
Application Of Artificial Intelligence For Detecting Derived Viruses, Omotayo Asiru, Moses Dlamini, Jonathan Blackledge
Application Of Artificial Intelligence For Detecting Derived Viruses, Omotayo Asiru, Moses Dlamini, Jonathan Blackledge
Conference papers
Computer viruses have become complex and operates in a stealth mode to avoid detection. New viruses are argued to be created each and every day. However, most of these supposedly ‘new’ viruses are not completely new. Most of the supposedly ‘new’ viruses are not necessarily created from scratch with completely new (something novel that has never been seen before) mechanisms. For example, most of these viruses just change their form and signatures to avoid detection. But their operation and the way they infect files and systems is still the same. Hence, such viruses cannot be argued to be new. In …
Nonlinear Control Methods For Single-Ended Primary-Inductor Power Converters, Samet Biricik, Tuan Ngo, Hasan Komurcugil, Malabika Basu
Nonlinear Control Methods For Single-Ended Primary-Inductor Power Converters, Samet Biricik, Tuan Ngo, Hasan Komurcugil, Malabika Basu
Conference papers
This paper investigates nonlinear control methods for single-ended primary-inductor converters (SEPIC). The fastswitching and average models show the converter nonlinearity in terms of inductor currents, capacitor voltages, and the switching duty cycle. The control law intuitively should be nonlinear to drive and guarantee the system stability. Two different control laws based on the passivity and back-stepping technique are examined and designed to have asymptotically global stability in the system. Unlike the passivity method which regulates the duty cycle directly, the back-stepping method adjusts the switching duty by a driver integrator/low pass filter system. The simulation results have shown the benefits …
Professional Roles And Employability Of Future Engineers, Kevin Gaughan, S. Craps, M. Pinxten, G. Saunders, M. Leandro-Cruz
Professional Roles And Employability Of Future Engineers, Kevin Gaughan, S. Craps, M. Pinxten, G. Saunders, M. Leandro-Cruz
Conference papers
Although there is high degree of agreement on the importance of transversal skills for engineers, employers observe a significant gap between expectations and reality. This paper discusses the need for the development of a framework of professional roles for future engineers and the implementation of dedicated skills education in engineering curricula to train students for this role. Based on an extensive literature study, an overview is given of previous research on this topic. The paper also outlines the next steps that will be taken by the authors as part of a European project PREFER to develop and implement these roles …
The Application Of Digital Accelerometers For Wired And Non-Wired Mechanomyography, Niall Campbell, Thomas Egan, Catherine Deegan
The Application Of Digital Accelerometers For Wired And Non-Wired Mechanomyography, Niall Campbell, Thomas Egan, Catherine Deegan
Conference papers
The objective of this paper is to consider the use of digital accelerometers for Mechanomyographic applications. The digital outputs of the accelerometer require the consideration of additional interfacing hardware for any commercial data acquisition systems being considered. The Arduino open-source platform is shown to meet this requirement. This platform also provides access to set the data registers on the accelerometer to output data at the resolution, speed and format required. Results show that digital accelerometers provide an accurate representation of the MMG signal. The second objective of this work was to extend this digital platform to design a wireless MMG …
Short-Term Electricity Load Forecasting For The Integrated Single Electricity Market (I-Sem), Katie Kavanagh, Martin Barrett, Michael Conlon
Short-Term Electricity Load Forecasting For The Integrated Single Electricity Market (I-Sem), Katie Kavanagh, Martin Barrett, Michael Conlon
Conference papers
The electricity market structure in Ireland is being reconstructed in order to meet with the requirements of the EU Third Energy Package. The forthcoming Integrated-Single Electricity Market (I-SEM) differs from the current market structure in many ways. However this research addresses the issue of balance responsibility under the I-SEM. Given the volatility of prices in the Balancing market, observed in similarly-structured markets around the world, Irish supply companies need to be able to accurately forecast their customers' load in the Day-Ahead market in order to manage risk in the Balancing market. This paper presents a means for suppliers to implement …
Application Of Artificial Intelligence For Detecting Computing Derived Viruses, Jonathan Blackledge, Omotayo Asiru, Moses Dlamini
Application Of Artificial Intelligence For Detecting Computing Derived Viruses, Jonathan Blackledge, Omotayo Asiru, Moses Dlamini
Conference papers
Computer viruses have become complex and operates in a stealth mode to avoid detection. New viruses are argued to be created each and every day. However, most of these supposedly ‘new’ viruses are not completely new. Most of the supposedly ‘new’ viruses are not necessarily created from scratch with completely new (something novel that has never been seen before) mechanisms. For example, most of these viruses just change their form and signatures to avoid detection. But their operation and the way they infect files and systems is still the same. Hence, such viruses cannot be argued to be new. In …
New Grid-Tied Cascaded Multilevel Inverter Topology With Reduced Number Of Switches, Shahab Sajedi, Malabika Basu, Michael Farrell
New Grid-Tied Cascaded Multilevel Inverter Topology With Reduced Number Of Switches, Shahab Sajedi, Malabika Basu, Michael Farrell
Conference papers
Performance of multilevel inverters (MLI) are distinguished because of their low harmonic waveform generation, low filtering requirements on AC side and high voltage application. Among different (MLI) topologies, cascaded multi-level inverters (CMLI) are easier to implement and are much more cost effective. The main drawback of multilevel inverters is requirement of more than one isolated DC source and a lot of switches which makes them bulky and expensive to implement. To address this issue, researchers have investigated new topologies with reduced number of switches compared to conventional multilevel converters. In this paper, a new grid-tied cascaded multi-level topology with reduced …
Uav Data For Coastal Dune Mapping, Chen Suo, Eugene Mcgovern, Alan Gilmer
Uav Data For Coastal Dune Mapping, Chen Suo, Eugene Mcgovern, Alan Gilmer
Conference papers
High resolution topographic maps are critical for the development of rigorous and quantitative numerical simulation landscape models. These models can inform targeted land management actions that maintain biodiversity and ecological functions. Mapping functional vegetation communities to obtain accurate distribution and population estimates is an important element of landscape models and is a challenging task which requires a considerable investment in time and resources. A recent development in surveying technologies, Unmanned Aerial Vehicles (UAV’s), also known as drones, has enabled high resolution and high accuracy ground-based data to be gathered quickly and easily on-site. The application of UAV’s represents a new …
An Equivalent Circuit For Corona Discharges Caused By A Point To Plane Arrangement At Ac, Dc And Combined Voltages, Tobias Dezenzo, Thomas Betz, Andreas Schwarzbacher
An Equivalent Circuit For Corona Discharges Caused By A Point To Plane Arrangement At Ac, Dc And Combined Voltages, Tobias Dezenzo, Thomas Betz, Andreas Schwarzbacher
Conference papers
In this paper a new two stage equivalent circuit for corona discharges is introduced. Its aim is to fill the gap between complexity of the circuit and accurate representation of the physical properties, which underlay a corona discharge. The first stage represents the voltage distribution and the occurrence of a discharge with respect to the applied voltage. The second stage models the physical discharge behavior like ionization, number of electrons, positive and negative ions as well as their interaction. The proposed circuit is able to model the different modes of corona discharges, which is experimentally verified. The simulation results are …
A Hardware One-Time Pad Prototype Generator For Localising Cloud Security, Jonathan Blackledge, Paul Tobin, Lee Tobin, Mick Mckeever
A Hardware One-Time Pad Prototype Generator For Localising Cloud Security, Jonathan Blackledge, Paul Tobin, Lee Tobin, Mick Mckeever
Conference papers
Abstract: In this paper, we examine a system for encrypting data before storing in the Cloud. Adopting this system gives excellent security to stored data and complete control for accessing data by the client at different locations. The motivation for developing this personal encryption came about because of poor Cloud security and doubts over the safety of public encryption algorithms which might contain backdoors. However, side-channel attacks and other unwanted third-party interventions in Cloud security, probably contribute more to the poor security record history. These factors led to the development of a prototype for personalising security locally which defeats cryptanalysis. …
Simultaneous Measurement Of Both Magnetic Field Strength And Temperature With A Microfiber Coupler Based Fiber Laser Sensor, Fangfang Wei, Dejun Liu, Yuliya Semenova, Gerald Farrell, Arun Mallik
Simultaneous Measurement Of Both Magnetic Field Strength And Temperature With A Microfiber Coupler Based Fiber Laser Sensor, Fangfang Wei, Dejun Liu, Yuliya Semenova, Gerald Farrell, Arun Mallik
Conference papers
In this paper we propose and investigate a novel magnetic field sensor based of a ring erbium-doped fiber laser combined with a fiber Bragg grating and a Sagnac loop containing a microfiber coupler and magnetic fluid. In addition to the magnetic field sensing capability, the proposed structure can simultaneously provide temperature information. Thanks to the dual-ring structure of the MFC-Sagnac loop and the FBG-assisted resonant cavity, the output has two distinct laser peaks. Experimentally demonstrated magnetic field sensitivity of one of the laser peaks is 15 pm/mT in the magnetic field range from 0 to 100 mT. The spectral position …
Investigation Of Electrical Defects Arising From Excessive Sidewall Force And Excessive Tensile Strain On Power Cables, Darren Mcconnon, Joseph Kearney, Tom Looby, James O'Shaughnessy
Investigation Of Electrical Defects Arising From Excessive Sidewall Force And Excessive Tensile Strain On Power Cables, Darren Mcconnon, Joseph Kearney, Tom Looby, James O'Shaughnessy
Conference papers
The study includes a comprehensive review of the existing literature and guidelines regarding the effects of sidewall force and tensile strain on power cables during installation. The most appropriate diagnostic test methods required to analyse these effects are also assessed. The results of tests and analysis of the existing literature are then combined in an attempt to determine a realistic basis for guidelines and recommendations relevant to cable installation forces.
A Review Of Control Methodologies For Dynamic Glazing, Eoin D. Mclean, Brian Norton, Derek Kearney, Philippe Lemarchand
A Review Of Control Methodologies For Dynamic Glazing, Eoin D. Mclean, Brian Norton, Derek Kearney, Philippe Lemarchand
Conference papers
With adaptive building façade technologies, a building envelope can provide a comfortable indoor environment under varying external conditions with minimal additional heating or cooling. The control strategy applied to the adaptation of the façade is a key determining factor in the successful integration of these technologies into a building. The building envelope plays a key role in regulating light, heat and mass transfer from the outdoor environment to the indoor. Dynamic glazing can be used to adjust the amount of solar radiation entering a building. The control strategies that ultimately determine the success of these switchable technologies to affect a …
Switchable Windows - Spectral Transmission And Switching Times, Philippe Lemarchand, Eoin D. Mclean, Brian Norton
Switchable Windows - Spectral Transmission And Switching Times, Philippe Lemarchand, Eoin D. Mclean, Brian Norton
Conference papers
The switching time and spectral transmission in fully clear and fully opaque states of polymer dispersed liquid crystals (PDLC), suspended particle device (SPD) and electrochromic (EC) switchable windows were evaluated to assess their suitability to control solar heat transmission though glazed façade and comfort to building occupants. The transmission measurement on a SPD film showed a very effective absorption modulation in the visible range but fast decrease in the near infrared region. The switching speed was demonstrated to be related strongly to wavelengths. A SPD film with a larger absorption and faster switching speed in the infrared region was shown …
Design Of An Underwater Cable Fault Location Device To Precisely Locate Submarine Cable Faults, Glenn O'Reilly, Joseph Kearney, John Lawler, Tom Looby
Design Of An Underwater Cable Fault Location Device To Precisely Locate Submarine Cable Faults, Glenn O'Reilly, Joseph Kearney, John Lawler, Tom Looby
Conference papers
The objective of the paper is to develop a robust and reliable method to pinpoint submarine cable faults. Submarine cables have existed for over 100 years but there is still no single method used to determine the precise location of a submarine cable fault. The various methods used to pinpoint cable faults, both submarine and non-submarine were researched and investigated to produce a method which would accurately pinpoint submarine cable faults. From this, the idea of a hydrophone string was derived from a non-submarine pinpointing method currently used. The hydrophone string was tested and it accurately pinpointed the location of …
Reactive Power Control For Smarter (Urban) Distribution Network Management With Increasing Integration Of Renewable Prosumers, Arsalan Zaidi, Keith Sunderland, Massimiliano Coppo, Michael Conlon, Roberto Turri
Reactive Power Control For Smarter (Urban) Distribution Network Management With Increasing Integration Of Renewable Prosumers, Arsalan Zaidi, Keith Sunderland, Massimiliano Coppo, Michael Conlon, Roberto Turri
Conference papers
Smart cities need to deliver reliable electric energy while utilizing every renewable energy source available in a sustainable manner. Increasing renewable electricity capacity, through Distributed Generation (DG) such as small wind and PV generation, causes difficulties for the distribution network operator (DNO) in sustaining adequate and appropriate power quality across the network. The positive impacts provided by such energy sources can be undermined by voltage increases and voltage balance issues. To overcome these problems, urban distribution networks need to transform ideally into smarter energy networks that can deliver renewable electricity locally, predictably and in a controllable and optimized manner. The …
Clustering Opportunistic Ant-Based Routing Protocol For Wireless Sensor Networks, Xinlu Li, Brian Keegan, Fredrick Mtenzi
Clustering Opportunistic Ant-Based Routing Protocol For Wireless Sensor Networks, Xinlu Li, Brian Keegan, Fredrick Mtenzi
Conference papers
The wireless Sensor Networks (WSNs) have a wide range of applications in many ereas, including many kinds of uses such as environmental monitoring and chemical detection. Due to the restriction of energy supply, the improvement of routing performance is the major motivation in WSNs. We present a Clustering Opportunistic Ant-based Routing protocol (COAR), which comprises the following main contributions to achieve high energy efficient and well load-balance: (i) in the clustering algorithm, we caculate the theoretical value of energy dissipation, which will make the number of clusters fluctuate around the expected value, (ii) define novel heuristic function and pheromone update …
Bootstrapping Labelled Dataset Construction For Cow Tracking And Behavior Analysis, Aram Ter-Sarkisov, Robert J. Ross, John D. Kelleher
Bootstrapping Labelled Dataset Construction For Cow Tracking And Behavior Analysis, Aram Ter-Sarkisov, Robert J. Ross, John D. Kelleher
Conference papers
This paper introduces a new approach to the longterm tracking of an object in a challenging environment. The object is a cow and the environment is an enclosure in a cowshed. Some of the key challenges in this domain are a cluttered background, low contrast and high similarity between moving objects – which greatly reduces the efficiency of most existing approaches, including those based on background subtraction. Our approach is split into object localization, instance segmentation, learning and tracking stages. Our solution is benchmarked against a range of semi-supervised object tracking algorithms and we show that the performance is strong …