Digital Commons Network^™

Real-Time Signal Processing For Flying Height Measurement And Control In Hard Drives Subject To Shock And Vibration, Amei Li

School of Engineering, Computing and Mathematics Theses

Three readback signal detection methods are investigated for real-time flying height or head disk spacing variation measurement under vibration conditions. This is carried out by theoretical analysis, numerical simulation, and experimental study. The first method (amplitude detection) provides a simple way to study the head disk spacing change. The second method ( PW50 parameter estimation) can be used effectively for real-time spacing variation measurement in normally operated hard disk drives, primarily in low frequency spacing variation conditions. The third method (thermal signal detection), on the other hand, is more effective and suitable for high frequency spacing variation measurement. By combining …

Artefacts, Technicity And Humanisation Industrial Design And The Problem Of Anoetic Technologies, Stephen James Thompson

School of Engineering, Computing and Mathematics Theses

This thesis concerns the intellectual heritage and autonomy of West European and American industrial design as a discourse community at a moment when biotechnological developments are challenging the certainty of what it means to be human. Proceeding from the assumption that industrial design is an autonomous intellectual engagement played out through the interpretation of technology as an artefact, the thesis identifies how this is a critical moment for industrial designers, who appear to be unable to respond to a problem of the apparent disconnection and the progressive displacement of the human in reference to technology. The thesis identifies the cause …

In Situ Measurements Of Building Materials Using A Thermal Probe, Brian Pilkington

School of Engineering, Computing and Mathematics Theses

This work concerns the in situ measurement of thermal conductivity and thermal diffusivity of building materials, so as to provide improved data for the estimation and prediction of energy efficiency in buildings. Thermal data sources and measurement methods currently used by industry to inform building design were found to give flawed values for the thermal properties of materials as found in situ. A transient measurement technique, carried out by means of a thermal probe, and used in various other industries, was investigated as an alternative, relatively non-destructive, rapid and economic means of obtaining representative results. An analysis of the literature …

Enhancement Of Perceived Quality Of Service For Voice Over Internet Protocol Systems, Zizhi Qiao

School of Engineering, Computing and Mathematics Theses

Voice over Internet Protocol (WIP) applications are becoming more and more popular in the telecommunication market. Packet switched V61P systems have many technical advantages over conventional Public Switched Telephone Network (PSTN), including its efficient and flexible use of the bandwidth, lower cost and enhanced security. However, due to the IP network's "Best Effort" nature, voice quality are not naturally guaranteed in the VoIP services. In fact, most current Vol]P services can not provide as good a voice quality as PSTN. IP Network impairments such as packet loss, delay and jitter affect perceived speech quality as do application layer impairment factors, …

Multi-Modal Task Instructions To Robots By Naive Users, Joerg Christian Wolf

School of Engineering, Computing and Mathematics Theses

This thesis presents a theoretical framework for the design of user-programmable robots. The objective of the work is to investigate multi-modal unconstrained natural instructions given to robots in order to design a learning robot. A corpus-centred approach is used to design an agent that can reason, learn and interact with a human in a natural unconstrained way. The corpus-centred design approach is formalised and developed in detail. It requires the developer to record a human during interaction and analyse the recordings to find instruction primitives. These are then implemented into a robot. The focus of this work has been on …

Quarter-Wave Metal Plate Solar Antenna, S. Shynu, Max Ammann, Brian Norton

Articles

A novel design of a quarter-wave shorted trapezoidal metal plate solar antenna using high efficiency polycrystalline silicon solar cells is presented. Using the DC conductive parts of the cell as RF antenna elements as well as choosing the radiating element to be a small base trapezoid, better coupling between the feed and shorting plates is ensured and 40.3% size reduction compared to a conventional shorted quarter-wave patch is obtained. The trapezoidal radiating element covers merely 2.7% of the total available illumination area of the solar cell, leaving its efficiency essentially unaffected. The proposed design strategy has been verified by an …

Engineering: An Inherently Philosophical Enterprise, William Grimson

Level 3

This chapter first sets out the arguments for considering engineering from a philosophical point of view with specific reference to the main branches of Philosophy. Additionally within the single branch of Epistemology, the relevance of Empiricism, Rationalism, Existentialism, Logical Positivist, and Post-Modernism to engineering is briefly outlined. The general proposition advanced is that Engineering is itself fundamentally philosophical in nature, attempting in its own way to make sense of the world in which we live.

Supply Chain Management And Logistics In The Xxi Century, Edward Sweeney

Other Resources

No abstract provided.

Masterplan And Masterplan Design Guidelines : 2008, Grangegorman Development Agency

Design/Planning

The GDA determined that in order to articulate the Vision for the Project and to test the project viability a comprehensive spatial masterplan of the highest standard needed to be developed. A spatial masterplan is a sophisticated model which:

• Shows how streets, squares and open spaces of a neighbourhood are to be connected.
• Defines the height, bulk and massing of buildings.
• Sets out suggested relationships between buildings and public spaces.
• Identifies the movement patterns for people on foot, or by bicycle, car or public transport, as well as looking at the needs of service and refuse vehicles.
• Sets out the …

Activity Systems Within Blended Problem-Based Learning In Academic Professional Development, Roisin Donnelly

Journal Articles

Blending face-to-face and online problem-based learning environments presents opportunities for both learners and lecturers to take part in collaborative knowledge construction. Activity theory is a suitable framework to investigate such environments and the learning processes that both sets of participants experience when engaging in these complementary environments. This paper attempts to map out the potential for activity systems using a blended problem-based learning approach through the exploration of an accredited academic staff development programme in Ireland. Firstly, an analysis of tool use and the discourse that participants and tutors engage in is presented. Secondly, tutor reflections about the evolution of …

Encouraging Student Creativity In Higher Education, Roisin Donnelly, Terry Barrett

Journal Articles

This chapter focuses on how teachers encourage the development of creative states of flow in their students and in themselves. The chapter aims to stimulate educators in higher education to think freshly about creativity and to widen their range of strategies for encouraging student creativity.

Linguatag: An Emotional Speech Analysis Application, Charlie Cullen, Brian Vaughan, Spyros Kousidis

Conference papers

The analysis of speech, particularly for emotional content, is an open area of current research. Ongoing work has developed an emotional speech corpus for analysis, and defined a vowel stress method by which this analysis may be performed. This paper documents the development of LinguaTag, an open source speech analysis software application which implements this vowel stress emotional speech analysis method developed as part of research into the acoustic and linguistic correlates of emotional speech. The analysis output is contained within a file format combining SMIL and SSML markup tags, to facilitate search and retrieval methods within an emotional speech …

Augmented Control Of Hands Free Voice Prostheses, Brian Madden, James Condron, Ted Burke, Eugene Coyle

Conference Papers

Laryngectomy patients often use an electrolarynx to facilitate speech following a tracheotomy. Devices of this type provide the most intelligible means of communication for tracheotomy patients. However, the electro-larynx has inherent drawbacks such as the buzzing monotonic sound emitted, the need for a free hand to operate the device, and the difficulty experienced by many tracheotomy patients in adapting to use it. The most effective means of addressing the shortcomings of existing electro-larynges is to provide the user with a hands-free facility. This allows the user to perform other manual tasks whilst speaking, or simply to communicate more effectively through …

Communication Of Medical Information Using Agents, John Mcgrory, Jane Grimson, Frank Clarke, Peter Gaffney

Conference Papers

Agents are self-contained software entities which act faithfully and autonomously on behalf of a body of knowledge. They can operate in a standalone capacity, or as part of a social group collaborating and

coordinating activities with other software agents. To access their knowledge, agents are interfaced with

using message passing communication. The principle behind medical communications is to provide a means

for exchanging information and knowledge from one computerised location to another, whilst preserving its

true meaning and understanding between the listener and sender. Agent communication is similar to medical

communications, but must provide an additional framework element to allow …

C-Saw---Contextual Semantic Alignment Of Ontologies: Using Negative Semantic Reinforcement, Brendan Tierney, Mike Jackson

Conference papers

Understanding the meaning of each term in an ontology is essential for successfully integrating and aligning ontologies. Much ontology integration research to date is focused on syntactic, structural and semantic matching where the actual meaning of the concepts is disregarded. The C-SAW approach to ontology alignment is based on the Contextualizing the concepts by using a set of Semantic Alignment Words (C-SAW). The C-SAW approach is enhanced by Negative Semantic Reinforcement (NSR), where additional semantic meaning can be added to the set of Semantic Alignment Words, by considering words which are unrelated to the concept.

Knowledge Visualisation Of Wikipedia, Jinhui Wang

Dissertations

Wikipedia is a popular online encyclopaedia, in which articles are created together by anyone who is willing to contribute. There is debate on the quality, reliability and consistency of articles due to its openness. Besides, it is hard to see the growing path of articles because there is no centralised control in Wikipedia. The history of articles is available but in form that is difficult to process to get a picture of article evolution. Knowledge visualisation addresses the problem by providing analysis and comprehension of large amounts of data to gain insights and to facilitate knowledge creation and sharing. However, …

Building Organisationally Sensitive Technological Solutions For Knowledge Management In It Support Services, David Tonade

Dissertations

With the advent of the internet, information and communications technology has changed the way organisations operate and do business. There now exist an extremely dynamic and competitive business landscape, where information and knowledge are continuously created, used and distributed across business units. People have become more involved with the use of technology to aid them in their business tasks. In the course of generating and transmitting information comes the realization that knowledge is a vital asset of the company. Thus, most firms embark on various initiatives to enable Knowledge Management (KM). This study revolves around the IT tools involved in …

Assessing The Impact Of Organisational Culture When Introducing Web.2.0 Technologies Into A Non-Profit Organisation For Knowledge Managment, Heather Madden

Dissertations

Some of the key challenges that any organisation faces today are those of knowledge sharing and collaboration. This research investigates knowledge sharing in existing communities of practice in a non-profit organisation and the challenges that are faced by attempting to facilitate online interactions for these communities. Organisation culture can either incentivise or impede this process and this research will describe how people and culture are two of the most important factors when considering a knowledge management initiative. Given that the impact of culture is such a key issue, a number of organisations are interviewed and evaluated to compare and contrast …

2008 - 2009 : Dit Staff Handbook, Dublin Institute Of Technology

DIT Publications

Booklet or staff containing general information on support services, central services, student services and faculties and campus.

The Focas Institute At Dit : Origins And Development Of A Research Institute, Hugh Byrne, Mary Mcnamara, Matt Hussey

DIT Publications

The book outlines the roots and development of a new scientific research institute called the Focas ( facility for Optical Characterisation and Spectroscopy) within the Dublin Institute of Technology.

Asia Pacific Perspectives Vol. 8 No. 1, June 2008, University Of San Francisco, University Of San Francisco

Asia Pacific Perspectives

Contents:

Jack London Reporting from Tokyo and Manchuria: The Forgotten Role of an Influential Observer of Early Modern Asia by Daniel A. Métraux

ack London is regarded as one of America’s most popular writers for his novels and short stories. Less known today is the fact that he was also a first-rate observer of East Asian politics, societies, and peoples. Working as a journalist for several newspapers and magazines, he filed numerous articles and essays covering the Russo-Japanese war and even foresaw the rise of Japan and China as world powers. This paper provides an overview of his journalistic and …

Archaeological Investigations On Little Folly Island, Steven D. Smith

Faculty Publications

No abstract provided.

Validation Of An Nsp-Based (Negative Selection Pattern) Gene Family Identification Strategy, Ronald L. Frank, Cyriac Kandoth, Fikret Erçal

Biological Sciences Faculty Research & Creative Works

Background: Gene family identification from ESTs can be a valuable resource for analysis of genome evolution but presents unique challenges in organisms for which the entire genome is not yet sequenced. We have developed a novel gene family identification method based on negative selection patterns (NSP) between family members to screen EST-generated contigs. This strategy was tested on five known gene families in Arabidopsis to see if individual paralogs could be identified with accuracy from EST data alone when compared to the actual gene sequences in this fully sequenced genome. Results: The NSP method uniquely identified family members in all …

Digital Radio Policy In Canada: From Analog Replacement To Multimedia Convergence, Brian O'Neill

Articles

Digital radio policy in Canada has moved from a position of seeking to migrate all radio broadcasting onto a single digital transmission system (Eureka-147) to a multi-platform, cross-media and multimedia approach. The most recent digital radio policy of 2006 suggests a range of new possibilities for radio broadcasting, including multimedia broadcasting, but as a result has compromised the early adoption of the Eureka-147 standard. This paper contrasts the different policy contexts of 1995 and 2006 and argues that the competing technological options for digital audio delivery now pose significant dilemmas for broadcasters and policy makers.

Violin Sound Quality Detection, Jane Charles, Derry Fitzgerald, Eugene Coyle

Conference papers

Although much research has been completed on finding features for instrument recognition system, little work has focused on the violin's timbre space. Suitable features from which a computer can assess the quality of a violinist's playing have been sought and the classification of violin note sound quality is investigated in this paper. The eventual outcome of this work can be applied in various systems including the development of a violin or bowed string instrument teaching aid, in automatic music transcription and information retrieval or classification systems.

Electrical Detection Of The Temperature Induced Melting Transition Of A Dna Hairpin Covalently Attached To Gold Interdigitated Microelectrodes, Greg P. Brewood, Yaswanth Rangineni, Daniel J. Fish, Ashwini Bhandiwad, David R. Evans, Raj Solanki, Albert S. Benight

Chemistry Faculty Publications and Presentations

The temperature induced melting transition of a self-complementary DNA strand covalently attached at the 5' end to the surface of a gold interdigitated microelectrode (GIME) was monitored in a novel, label-free, manner. The structural state of the hairpin was assessed by measuring four different electronic properties of the GIME (capacitance, impedance, dissipation factor and phase angle) as a function of temperature from 25 degrees C to 80 degrees C. Consistent changes in all four electronic properties of the GIME were observed over this temperature range, and attributed to the transition of the attached single-stranded DNA (ssDNA) from an intramolecular, folded …

Interacting With Large Music Collections: Towards The Use Of Environmental Metadata, Gordon Reynolds, Dan Barry, Ted Burke, Eugene Coyle

Conference papers

Large music collections afford the listener flexibility in the form of choice, which enables the listener to choose the appropriate piece of music to enhance or complement their listening scenario on-demand. However, bundled with such a large music collection is the demanding task of manually searching through each entry in the collection to find the appropriate song required by the listener. This paper highlights the need for contextual and environmental information, which ultimately defines the listenerpsilas listening scenario. Here, the preliminary results of an online music survey are analysed. These results indicate the possibility of how environmental features may be …

Linear Prediction: The Problem, Its Solution And Application To Speech, Alan O'Cinneide, David Dorran, Mikel Gainza

Conference papers

Linear prediction is a signal processing technique that is used extensively in the analysis of speech signals and, as it is so heavily referred to in speech processing literature, a certain level of familiarity with the topic is typically required by all speech processing engineers. This paper aims to provide a well-rounded introduction to linear prediction, and so doing, facilitate the understanding of the technique. Linear prediction and its mathematical derivation will be described, with a specific focus on applying the technique to speech signals. It is noted, however, that although progress in linear prediction has been driven primarily by …

Beyond Economics: A Behavioural Approach To Energy Efficiency In Domestic Buildings, Marius Claudy, Aidan O'Driscoll

Articles

This paper argues that the moderate success of policies aiming to stimulate the uptake of Sustainable Energy Systems (SES) in the domestic sector is grounded in a poor understanding of the ‘consumer’. The predominant economic approach behind most policies assumes that improving the cost-benefit ratio of technologies via grants and subsidies and providing sufficient information will automatically incentivise householders’ to invest into SES. Yet, policymakers often neglect behavioural determinants such as attitudes, social norms or personal capabilities. Drawing on key findings from the economics, technology and behavioural literature, this paper proposes an integrated model to identify behavioural and contextual influences …

Inequalities And Exponential Approximations For Residual Life Reliability Functions, Broderick O. Oluyede, Marvis Pararai

Mathematical Sciences: Faculty Publications

Given that a unit is of age t, the remaining life after time t is random. The expected value of this random residual life is called the mean residual life at time t. Specifically, if T is the life of a component with distribution function F, then δF (t) = E(T −t|T > t) is called the mean residual life function (MRLF). It is well known that the class of distributions with decreasing mean residual life (DMR) contains the class of distributions with increasing hazard rate (IHR). In this note, …