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Current Search:
All of 'Electrical', 'and', 'Computer' and 'Engineering' in all fields;
298 items found
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Displaying Results 1 - 25 of 298 on page 1 of 12
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Evaluation of a Part-Time Engineering Degree Programme That Aimed to Unify and Diversify
(2010)
Kelly, Kevin; Kenny, Vincent
Evaluation of a Part-Time Engineering Degree Programme That Aimed to Unify and Diversify
(2010)
Kelly, Kevin; Kenny, Vincent
Abstract:
The School of Electrical Engineering within DIT attempted to address the challenge of increasing diversity in Engineering Education by developing a part-time Electrical Services Engineering degree programme that began as a certificate in 2001 and as a degree in 2003. This four year evening programme had a number of innovations: • Recognition of Prior Learning (RPL) • Application of a Student Centred paradigm • Innovative Curriculum Development using Constructivist principles and Project Based Learning (in part) This paper will be an evaluation of the four year part time degree programme. There are issues deserving investigation with regard to the programme. The research questions for this piece of reserach will be: • What do academic staff and students think about the programme. How successful has it really been in widening diversity, applying a student centred paradigm and how innovative has it really been in practice. What part does Project Based Learning really play and does it a...
http://arrow.dit.ie/engscheleart/142
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An investigation into non-verbal sound-based modes of human-to-computer communication with rehabilitation applications
(2003)
Burke, Ted
An investigation into non-verbal sound-based modes of human-to-computer communication with rehabilitation applications
(2003)
Burke, Ted
Abstract:
During the course of our work in the National Rehabilitation Hospital in Ireland we have encountered patients who, while unable to speak, are capable of making reproducible utterances. We present techniques used to harness such utterances, in addition to whistling, as a means of communication and control. A simple technique for identifying the phonemes /o/ and /s/ (in single-symbol ARPAbet notation) is presented with applications. The use of pitch variation as a means of controlling a continuously variable parameter is described with two applications - a microcontroller based light dimmer switch and a computer program which facilitates mouse pointer control. Finally, a technique for the recognition of short note sequences is presented. A program is described which allows arbitrary commands to be executed in response to tunes either sung or whistled by the user. These commands may be used to switch on or off electrical appliances in the home.
http://arrow.dit.ie/teapotcon/7
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Using Virtual Reality to Enhance Electrical Safety and Design in the Built Environment
(2010)
Blackledge, Jonathan; Barrett, Martin; Coyle, Eugene
Using Virtual Reality to Enhance Electrical Safety and Design in the Built Environment
(2010)
Blackledge, Jonathan; Barrett, Martin; Coyle, Eugene
Abstract:
<p>Electricity and the inherent risks associated with its use in the built environment have long since been a priority for the electrical services industry and also the general public who must live and work in this environment. By its nature virtual reality has the advantage of being safe for both the user and equipment. In addition, it offers the user an opportunity to be exposed to a range of scenarios and conditions that either occur infrequently or are hazardous to replicate. This paper presents a prototype desktop virtual reality model, to enhance electrical safety and design in the built environment. The model presented has the potential to be used as an educational tool for third level students, a design tool for industry, or as a virtual electrical safety manual for the general public. A description of the development of the virtual reality model is presented along with the applications that were developed within the model. The potential for virtual reality is highligh...
http://arrow.dit.ie/engscheleart2/17
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Development of a Tool for Windfarm Site Analysis in Electrical Networks with High Levels of Wind Power Generation
(2011)
Carroll, Edward; McGrory, John
Development of a Tool for Windfarm Site Analysis in Electrical Networks with High Levels of Wind Power Generation
(2011)
Carroll, Edward; McGrory, John
Abstract:
<p>Controlling electrical networks that contain high levels of wind power will be a challenge facing many System Operators in the coming years. The intermittency and uncertainty of the power supplied by wind turbines create difficulties surrounding scheduling of plant, operating reserve and grid integration. The current process for windfarm selection is carried out by an individual stakeholder and lacks the consideration for all other stakeholders involved, which can create problems in the long term when the levels of wind power increase on the network. This paper proposes a collective approach to analysing potential windfarm sites using the key factors which influence the windfarm output and integration into the network. The wind resource and generation outputs are examined using state of the art analysis software to discover and rate the values of the factors which influence these variables. A spreadsheet incorporating these factors is developed and evaluated, which allows s...
http://arrow.dit.ie/engscheledis/6
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Prior understanding of basic electrical circuit concepts by first year engineering students
(2009)
O'Dwyer, Aidan
Prior understanding of basic electrical circuit concepts by first year engineering students
(2009)
O'Dwyer, Aidan
Abstract:
There is a broad diversity of educational background of students entering Level 7 programmes in engineering. As a result, students’ reasoning regarding basic electrical concepts often differs from accepted explanations. This contribution reports, analyses and reflects on the results of a multiple-choice diagnostic test to assess student understanding of such concepts (developed by Engelhardt and Beichner (2004) for high school and college students), taken by three cohorts of first year, Level 7, engineering students at Dublin Institute of Technology during the 2008-9 academic year.
http://arrow.dit.ie/engscheleart/112
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The Human Eye Position Control System in a Rehabilitation Setting
(2005)
Nolan, Yvonne; Burke, Ted; Boylan, C.; De Paor, Annraoi
The Human Eye Position Control System in a Rehabilitation Setting
(2005)
Nolan, Yvonne; Burke, Ted; Boylan, C.; De Paor, Annraoi
Abstract:
<p>Our work at Ireland’s National Rehabilitation Hospital involves designing communication systems for people suffering from profound physical disabilities. One such system uses the electro-oculogram, which is an (x,y) system of voltages picked up by pairs of electrodes placed, respectively, above and below and on either side of the eyes. The eyeball has a dc polarisation between cornea and back, arising from the photoreceptor rods and cones in the retina. As the eye rotates, the varying voltages projected onto the electrodes drive a cursor over a mimic keyboard on a computer screen. Symbols are selected with a switching action derived, for example, from a blink. Experience in using this mode of communication has given us limited facilities to study the eye position control system. We present here a resulting new feedback model for rotation in either the vertical or the horizontal plane, which involves the eyeball controlled by an agonist-antagonist muscle pair, modelled by a ...
http://arrow.dit.ie/teapotart/4
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On Improving Electrooculogram-based Computer Mouse Systems: the Accelerometer Trigger
(2011)
Keegan, Johnalan; Burke, Edward; Condron, James; Coyle, Eugene
On Improving Electrooculogram-based Computer Mouse Systems: the Accelerometer Trigger
(2011)
Keegan, Johnalan; Burke, Edward; Condron, James; Coyle, Eugene
Abstract:
Eye tracking is a well-established method of computer control for profoundly paralysed people (Anson et al., 2002). Cameras are commonly used to track eye movements (Morimoto et al., 2005) but one alternative is the bioelectrical signal known as the electrooculogram (EOG). There are some EOG mouse control systems that facilitate the use of GUI applications, but certain actions, which are straightforward using a conventional mouse, remain impossible. Unless the eyes are tracking a target, they move in saccades (jumps), making it impossible to voluntarily trace out smooth trajectories with one's gaze, as would be required to draw a smooth curve. The conventional paradigm for EOG mouse control maps horizontal and vertical angular displacement of the eyes onto the coordinates of the mouse pointer (Gips et al. and Estrany et al., 2008), while the head remains stationary. Reversing this paradigm, if the point of fixation remains unchanged, the EOG can measure head movement. The prese...
http://arrow.dit.ie/teapotcon/19
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A Parametric Analysis of Domestic Electricity Consumption Patterns in Ireland
(2011)
McLoughlin, Fintan; Duffy, Aidan; Conlon, Michael
A Parametric Analysis of Domestic Electricity Consumption Patterns in Ireland
(2011)
McLoughlin, Fintan; Duffy, Aidan; Conlon, Michael
Abstract:
<p><strong>This paper reports findings from a study of electrical load profiles obtained from a survey of a representative cross section of approximately 4,000 Irish dwellings. Electricity demand was recorded at half-hourly intervals for each dwelling over a six month period from 1st July 2009 to 31st December 2009. Descriptive statistics are shown for each electrical parameter such as mean, maximum demand, load factor and time of use (ToU) of electricity consumption. The mean power demand and daily mean load factor of the sample was 0.512kW and 23.43% respectively for all dwellings over the monitoring period. A mean daily maximum demand of 2.5kW was recorded for the sample. The most frequent ToU for maximum and minimum electricity consumption over the monitoring period was 18:00 - 18:30 and 06:30 – 07:00 respectively. </strong></p>
http://arrow.dit.ie/dubencon2/65
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Analysis of Engineering Students Learning Styles on Level 7, Level 8 and Level 9 Programmes
(2010)
O'Dwyer, Aidan
Analysis of Engineering Students Learning Styles on Level 7, Level 8 and Level 9 Programmes
(2010)
O'Dwyer, Aidan
Abstract:
This contribution reports on research, carried out over three academic years, into the learning styles of engineering students, on a number of Level 7, Level 8 and Level 9 programmes at DIT, using the index of learning styles survey developed by Felder and Soloman (1991). The contribution explores the results obtained in detail, placing them particularly in the national context. The correlation between student performance and individual learning styles is examined. Knowledge of the strongly visual learning style of these cohorts of students may be used to improve the learning environment.
http://arrow.dit.ie/engscheleart/127
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Experiences of Assessment Using Multiple Choice Questions On Advanced Modules Taken By Level 8 and Level 9 Engineering Students
(2010)
O'Dwyer, Aidan
Experiences of Assessment Using Multiple Choice Questions On Advanced Modules Taken By Level 8 and Level 9 Engineering Students
(2010)
O'Dwyer, Aidan
Abstract:
This contribution evaluates the use of multiple-choice questions, in both formative and summative assessment modes, on advanced modules taken by Level 8 and Level 9 engineering students, over the past two academic years. Assessment data, and student experiences with the assessment methods, are reported and analysed.
http://arrow.dit.ie/engscheleart/131
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A Vocalisation-based Drawing Interface for Disabled Children
(2004)
Burke, Ted
A Vocalisation-based Drawing Interface for Disabled Children
(2004)
Burke, Ted
Abstract:
<p>In our work with disabled children at Ireland’s National Rehabilitation Hospital, a problem we have experienced in the facilitation of art activities is that traditional art materials and standard computer drawing programs sometimes prove inaccessible. In this paper, an original system, called “PaintMyVoice” is presented which facilitates the creation of two or three-dimensional images using a variety of novel input modalities. In particular, vocalisations can be used to create original images of a variety of objects, including trees, flowers and landscape elements. Additional input to the system can optionally be provided via mouse, keyboard, switch interface or digital camera depending on the abilities of the user. Here, the program’s user interface is described, with an emphasis on accessibility features. The signal processing techniques used to measure various vocal characteristics including intensity, pitch and other spectral characteristics are outlined. The means of ...
http://arrow.dit.ie/teapotart/5
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The Integration of Smart Meters Into Electrical Grids to Ensure Maximum Benefit for Consumers, Generators and Network Operators.
(2011)
Bean, Tom; McGrory, John
The Integration of Smart Meters Into Electrical Grids to Ensure Maximum Benefit for Consumers, Generators and Network Operators.
(2011)
Bean, Tom; McGrory, John
Abstract:
<p>The term “smart metering” has been used in many project descriptions and publications produced by utility companies (e.g. gas, water and electricity), conference papers and journal papers, but the true meaning of the term has been fudged. Does smart metering signify rapid recording of data (i.e. data logger) or does it give totals (e.g. maximum, minimum and average), as neither of these are truly “Smart” or “Intelligent” virtues in themselves, or is there some additional role that needs to be explored. This dissertation examines the “smart metering” idiom jointly from energy supplier, grid manager and consumer perspectives and formulates a detailed model of the interfaces that are currently being touted as necessary for realising a smart system. Other aspects such as infrastructure, networking of data, ownership, location etc are also explored. Using a base model of the existing approach, this research shows where true “Smart” or “Intelligent” virtues could be incorporated....
http://arrow.dit.ie/engscheledis/2
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A System for Monitoring Pressures and Spinal Curvature in Spinally Injured People Immobilised on a Spinal Raft
(2004)
De Frein, Ruairi; Flinn, Eoin; Burke, Ted
A System for Monitoring Pressures and Spinal Curvature in Spinally Injured People Immobilised on a Spinal Raft
(2004)
De Frein, Ruairi; Flinn, Eoin; Burke, Ted
Abstract:
<p>We present a system designed to study the pressure at various ‘hot spots’ on the back of the body and the deformation of the spine experienced by a patient when strapped to a spinal board, and the potential alleviation of both by the addition of an inflatable “spinal raft” (or other similar device). In measuring pressure we devised a system of air-filled sacks interfaced with a PC. Each sack, placed under a particular key point on the body, is inflated until its faces just begin to separate and a switch thereby opens. The pressure reading is then captured and displayed by the computer. Seeking a non-invasive method of measuring the curvature of the vertebral column, we discovered that we could use a magnetometer to measure the vertical displacement of magnetically-tagged vertebrae from a fixed horizontal plane. The results of our study will be employed by an independent body to determine the merits or demerit of the spinal raft.</p>
http://arrow.dit.ie/teapotart/1
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A general purpose electromechanical simulator for switches used in the rehabilitation of communication-impaired people
(2004)
Connolly, Niamh; Burke, Ted; De Paor, Annraoi
A general purpose electromechanical simulator for switches used in the rehabilitation of communication-impaired people
(2004)
Connolly, Niamh; Burke, Ted; De Paor, Annraoi
Abstract:
The importance of simple mechanical switches in rehabilitation cannot be overstated, particularly in the facilitation of communication and control by people with profound physical disabilities. Many communication and control systems are designed to be operable using a single switch (or a small number of switches). A crucial step in the tailoring of a system to a patient who will operate it in this way is the selection of an appropriate switch, according to their physical abilities. We present a prototype switch simulator, capable of reproducing various types of switching action under computer control. This electromechanical device exhibits a force versus displacement characteristic (possibly incorporating hysteresis) selected by the user on the PC. In this way, the suitability of a variety of switching actions for a patient can be assessed, and the optimal choice identified. Furthermore, for patients with very particular needs, this device can implement switching actions which are d...
http://arrow.dit.ie/teapotart/2
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Teaching and assessment of students taking a first year, Level 7 subject: analysis and actions
(2008)
O'Dwyer, Aidan
Teaching and assessment of students taking a first year, Level 7 subject: analysis and actions
(2008)
O'Dwyer, Aidan
Abstract:
This contribution critically analyses the teaching and assessment strategies used on the core Electrical Systems subject in the first year of a three-year, Level 7, degree programme in Electrical Engineering at Dublin Institute of Technology. The author has the responsibility for development and instruction in the subject since 2004. In the 2004-5 and 2005-6 academic years, the didactic teaching approach and the assessment strategy ensured good educational outcomes. This was not the case in the 2006-7 academic year. The contribution will analyse the reasons for this, taking an evidence-based approach (i.e. analysing the assessment data in detail). Two conclusions that are drawn are that students have reasonable breadth of knowledge of the basic material, but knowledge depth is limited, and that students perform better in laboratories and project work than in examinations. Subsequently, the actions taken to improve student learning in the 2007-8 academic year will be detailed, and so...
http://arrow.dit.ie/engscheleart/11
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Production and Storage of Hydrogen
(2009)
Muller, Michael, (Thesis)
Production and Storage of Hydrogen
(2009)
Muller, Michael, (Thesis)
Abstract:
<p>The Faculty of Electrical Engineering and Information Technology at the University of Applied Science in Darmstadt runs several hydrogen-related experiments at their fuel cell laboratory. In cooperation with the Dublin Institute of Technology (DIT), a new project was started in 2007. The aim of this project was to develop an energy storage system, which would work with hydrogen as a high quality energy storage. This system was developed for using the electricity of solar panels in order to run an electrolyser. Hydrogen is produced and afterwards stored in an adequate storage tank. Once the hydrogen has been stored, it can be used by a fuel cell to produce electricity again, anytime energy is needed. The main difficulty of this project consists in storing the maximum amount of hydrogen with the minium loss of the energy needed for the periphery (cleaning, drying, storing).</p>
http://arrow.dit.ie/engmas/34
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The Probabilistic Integration of Demand-Side Load and Generation in a Representative Irish Distribution Network
(2012)
Sunderland, Keith; Conlon, Michael
The Probabilistic Integration of Demand-Side Load and Generation in a Representative Irish Distribution Network
(2012)
Sunderland, Keith; Conlon, Michael
Abstract:
<p>This paper introduces a methodology for investigating the behaviour of a distribution network incorporating both load variations and variable micro-wind generation output. The probabilistic methodology is applied to a representative model of the Irish Distribution Network. Application of a selection of commercially available micro-wind turbines to the model is investigated for a range of load and generation scenarios based on a standard load profile and varying mean wind speed. Analysis of the results of the analysis forms the basis for defining the limitations of the methodology but also presents the opportunities for future work.</p>
http://arrow.dit.ie/engscheleart/172
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Optimal control strategy of UPQC for minimum operational losses
(2004)
Basu, Malabika; Farrell, Michael; Conlon, Michael F.; Gaughan, Kevin; Coyle, Eugene
Optimal control strategy of UPQC for minimum operational losses
(2004)
Basu, Malabika; Farrell, Michael; Conlon, Michael F.; Gaughan, Kevin; Coyle, Eugene
Abstract:
The paper deals with a new control technique for a unified power quality conditioner (UPQC), which is the most comprehensive of FACTS devices. The problems of power quality continue to gain in significance because of the proliferation of sensitive and harmonic producing loads in electrical networks. Greater awareness among customers with regard to supply integrity and a desire by suppliers to be able to guarantee a certain degree of power quality to customers is being reflected in the development of innovative power quality solutions. The UPQC, which is a combination of shunt and series compensation, is designed to cater for multiple power quality problems. The shunt compensator provides VAr compensation to the load. It also provides harmonic isolation between the load and the utility supply. The series compensator regulates the incoming voltage quality from the supply side, and keeps the load end voltage insensitive to the supply voltage problems like sag/swell or unbalance. All th...
http://arrow.dit.ie/engscheleart/113
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Development of a Computer-Based Violin Teaching Aid: ViTool
(2005)
Charles, Jane; Fitzgerald, Derry; Coyle, Eugene
Development of a Computer-Based Violin Teaching Aid: ViTool
(2005)
Charles, Jane; Fitzgerald, Derry; Coyle, Eugene
Abstract:
<p>This paper considers the development of a violin teaching aid, called ViTool, which is based on violin pedagogy, sound analysis, and comparison of beginner and good player recordings. It is a computer based teaching aid and will ultimately consist of at least four task dependent tools. Typical beginner faults have been identified and features, that best describe them for classification purposes, are considered. The ViTool is not intended as a replacement or electronic teacher, but as a teaching aid. Presently, it seems that no such violin learning aid or tool exists and an opportunity exists for the development of such home learning aids. This paper puts forward the initial steps towards such a teaching aid.</p>
http://arrow.dit.ie/argcon/75
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Learning games programming with Dalek World.
(2005)
Duggan, Bryan; McAtamney, Hugh; Mtenzi, Fredrick
Learning games programming with Dalek World.
(2005)
Duggan, Bryan; McAtamney, Hugh; Mtenzi, Fredrick
Abstract:
<p>From September 2005 the School of Computing in the DIT will offer an elective in computer games programming to final year computer science students. This paper demonstrates how students will learn games programming by developing a 3D FPS (First Person Shooter) called Dalek World. Dalek World is developed using Microsoft Visual Studio in C++ and was originally developed by the authors to learn games programming techniques themselves. In developing Dalek World, students will learn Euclidian geometry, 3D graphics programming, object orientated game design, level loading, physics, collision detection, the A* algorithm, perception and enemy AI using finite state machines.</p>
http://arrow.dit.ie/scschcomcon/33
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FPGA based stereo imaging system with applications in computer gaming
(2009)
Andorko, Istvan; Corcoran, Peter M.
FPGA based stereo imaging system with applications in computer gaming
(2009)
Andorko, Istvan; Corcoran, Peter M.
Abstract:
A real-time stereo imaging system is described. It incorporates dual image acquisition chains on a single FPGA device and is able to provide real-time synchronized video output from twin CMOS imaging sensors. The platform is designed to provide hardware support for future implementations of advanced face analysis algorithms. In the context of computer gaming applications this system can provide real-time capture of a game players facial actions and expressions serving as an enabling technology for next generation gaming. Potential applications include (i) generating 3D real-time responsive game avatars and (ii) employing real-time face data for next-generation game UI.
http://hdl.handle.net/10379/1355
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On the suitability of near-infrared (NIR) systems for next-generation brain-computer interfaces
(2004)
Coyle, Shirley; Ward, Tomas; Markham, Charles; McDarby, Gary
On the suitability of near-infrared (NIR) systems for next-generation brain-computer interfaces
(2004)
Coyle, Shirley; Ward, Tomas; Markham, Charles; McDarby, Gary
Abstract:
A brain–computer interface (BCI) gives those suffering from neuromuscular impairments a means to interact and communicate with their surrounding environment. A BCI translates physiological signals, typically electrical, detected from the brain to control an output device. A significant problem with current BCIs is the lengthy training periods involved for proficient usage, which can often lead to frustration and anxiety on the part of the user. Ultimately this can lead to abandonment of the device. The primary reason for this is that relatively indirect measures of cognitive function, as can be gleaned from the electroencephalogram (EEG), are harnessed. A more suitable and usable interface would need to measure cognitive function more directly. In order to do this, new measurement modalities, signal acquisition and processing, and translation algorithms need to be addressed. In this paper, we propose a novel approach, using non-invasive near-infrared imaging technology to develop a ...
http://eprints.nuim.ie/1370/
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Speech-adaptive time-scale modification for computer assisted language learning
(2003)
Donnellan, Olivia; Jung, Elmar; Coyle, Eugene
Speech-adaptive time-scale modification for computer assisted language learning
(2003)
Donnellan, Olivia; Jung, Elmar; Coyle, Eugene
Abstract:
In traditional foreign language learning programmes students are offered a tutor model characterised by slow, deliberate speech. This is insufficient to prepare them to cope with native, colloquial speech. By applying a timescale modification (TSM) algorithm to natural-speed, native speech, students have access to a more desirable, natural speech corpus which permits them to practise essential listening skills in a more focussed manner. This paper presents a method which allows slowing down speech without compromising the quality, pitch or naturalness of the slowed speech by applying different scaling factors to different types of speech segments. The new method is compared to traditional uniform-rate techniques and other variable time-scaling methods. The results show that the proposed approach produces a superior quality output, even for high modification rates.
http://arrow.dit.ie/engscheleart/114
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Automated packing systems - a systems engineering approach
(1996)
Whelan, Paul F.; Batchelor, Bruce G.
Automated packing systems - a systems engineering approach
(1996)
Whelan, Paul F.; Batchelor, Bruce G.
Abstract:
The ability to manipulate previously unseen objects under visual control is one of the key tasks in the successful implementation of robotic, automated assembly and adaptive material handling systems. The automation of such complex industrial environments will require the development of machine vision systems that are highly adaptable and capable of dealing with a wide range of variable products. An important group of applications of this type is found in the automated packing and nesting of arbitrary shapes. The aim of this work has been to produce an efficient packing strategy that is flexible enough for a wide variety of industrial uses and which can be implemented using fast moderately priced hardware. A systems approach, as distinct from a purely algorithmic one, has been deliberately adopted since the work is concerned with industrial vision applications in which significant problem constraints exist. This paper also outlines the background to this research, and reviews a sele...
http://doras.dcu.ie/2452/
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Multi-engine packet classification hardware accelerator
(2009)
Kennedy, Alan; Liu, Zhen; Wang, Xiaojun; Liu, Bin
Multi-engine packet classification hardware accelerator
(2009)
Kennedy, Alan; Liu, Zhen; Wang, Xiaojun; Liu, Bin
Abstract:
As line rates increase, the task of designing high performance architectures with reduced power consumption for the processing of router traffic remains important. In this paper, we present a multi-engine packet classification hardware accelerator, which gives increased performance and reduced power consumption. It follows the basic idea of decision-tree based packet classification algorithms, such as HiCuts and HyperCuts, in which the hyperspace represented by the ruleset is recursively divided into smaller subspaces according to some heuristics. Each classification engine consists of a Trie Traverser which is responsible for finding the leaf node corresponding to the incoming packet, and a Leaf Node Searcher that reports the matching rule in the leaf node. The packet classification engine utilizes the possibility of ultra-wide memory word provided by FPGA block RAM to store the decision tree data structure, in an attempt to reduce the number of memory accesses needed for the class...
http://doras.dcu.ie/15526/
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