Digital Commons Network^™

Comparison Of Two B-Polynomial Methods: Application To The Identification Of Time Delayed Processes, Ruiyao Gao, Aidan O'Dwyer

Conference papers

An extensive literature exists on the estimation of the model parameters of time delayed processes. The objective of this paper is to review the main B-polynomial approaches to the delay estimation problem. More specifically, two algorithms are discussed and compared theoretically and in simulation. The algorithms involve various procedures to assess how the model relates to the observed data, to a priori knowledge, and to the algorithms’ intended use. Simulation results indicate that both the algorithms can suitably identify the model parameters, including the time delay. This paper also discusses advantages and disadvantages of the methods and gives some guidelines …

Magnetic Nanoparticles And Nanoparticle Assemblies From Metallorganic Precursors, Suresh Pillai, Yurri Gunko, David Mcinerney

Articles

No abstract provided.

The Problem Of A Viscoelastic Cylinder Rolling On A Rigid Half-Space, John Murrough Golden, G.A.C. Graham

Articles

The problem of a viscoelastic cylinder rolling on a rigid base, propelled by a line force acting at its centre, is solved in the noninertial approximation. The method used is based on a decomposition of hereditary integrals developed by the authors in previous work, and on the viscoelastic Kolosov-Muskhelishvili equations which are used to generate a Hilbert problem. In this formulation, the problem reduces to a nonsingular integral equation in space and time, which simplifies under steady-state conditions and for exponential decay materials, to algebraic form. There are also two subsidiary conditions.

In the case of a standard linear model, …

Pi And Pid Controller Tuning Rule Design For Processes With Delay, To Achieve Constant Gain And Phase Margins For All Values Of Delay, Aidan O'Dwyer

Conference papers

This paper will discuss the design of PI and PID controller tuning rules to compensate processes with delay, that are modelled in a number of ways. The rules allow the achievement of constant gain and phase margins as the delay varies.

Education, Training And The Role Of Logistic Managers In Ireland, John Mangan, Orla Gregory

Articles

The paper is based on the analysis of the responses of a questionnaire survey of logistics managers working in manufacturing firms in Ireland. The objectives of the survey were to establish the educational and training needs of the practicing logistics manager. The questionnaire was designed to address issues including the various logistics practices undertaken by the respondents' company and the time spent by respondents on these activities; the skills currently required by logistics managers; the attitude to logistics in respondents' companies; the qualifications held and nature of training received by logistics managers; the effectiveness of training received; future training requirements …

Software Quality Strategic Driver Model (Sq-Sdm), Ronan Fitzpatrick

Other resources

No abstract provided.

Eddy Structures Induced Within A Wedge By A Honing Circular Arc, C. P. Hills

Articles

In this paper we outline an expeditious numerical procedure to calculate the Stokes flow in a corner due to the rotation of a scraping circular boundary. The method is also applicable to other wedge geometries. We employ a collocation technique utilising a basis of eddy (similarity) functions introduced by Moffatt (1964) that allows us to satisfy automatically the governing equations for the streamfunction and all the boundary conditions on the surface of the wedge. The circular honing problem thereby becomes one-dimensional requiring only the satisfaction of conditions on the circular boundary. The advantage of using the Moffatt eddy functions as …

Eddies Induced In Cylindrical Containers By A Rotating End Wall, Christopher Hills

Articles

The flow generated in a viscous liquid contained in a cylindrical geometry by a rotating end wall is considered. Recent numerical and experimental work has established several distinct phases of the motion when fluid inertia plays a significant role. The current paper, however, establishes the nature of the flow in the thus far neglected low Reynolds number regime. Explicitly, by employing biorthogonality relations appropriate to the current geometry, it is shown that a sequence of exponentially decaying eddies extends outward from the rotating end wall. The cellular structure is a manifestation of the dominance of complex eigensolutions to the homogeneous …

Strategic Drivers Of Software Quality: Beyond External And Internal Software Quality, Ronan Fitzpatrick

Conference papers

Software quality is often considered in terms of the contractual requirements between the supplier and acquirer as described in ISO/IEC 12207 and focuses on software life cycle processes. However, beyond these processes acquirer organisations need to address other issues like complying with new legislation, securing return on investment, and achieving competitive support from their new software investments. Supplier organisations also have issues that they must manage. This paper addresses all of these issues and presents eleven issues, which it calls strategic drivers. Then, using the SOFTWARE QUALITY STAR, builds a new conceptual model where each strategic quality driver is defined …

Applying Event-Condition-Action Mechanism In Healthcare: A Computerised Clinical Test-Ordering Protocol System (Tops), Bing Wu, Kudakwashe Dube

Conference papers

This paper addresses issues of the active database application in the challenging healthcare area: the management and execution of computerised clinical practice guidelines/protocols. The problem of how to efficiently and effectively quey and manipulate the computerised clinical protocols/guidelines has posed a major challenge but received little research attention until very recently. By proposing a declarative modelling language (PLAN) with an Event-Condition-Action (ECA) mechanism for clinical test-ordering protocols, and an automatic mapping and management system (TOPS), this paper addresses this issue, in an important medical domain, from a unified approach based on an active rule mechanism. The work presented in this …

A Wideband Monopole For Reconfigurable Multiband Radio Terminals, Max Ammann

Conference papers

A wideband planar monopole employing two broadbanding techniques is investigated, and is shown to yield an impedance bandwidth ratio of 10:1 or greater for a return loss of 8 dB. The radiation pattern bandwidth is also investigated

Sharing Health-Care Records Over The Internet, Jane Grimson, Gaye Stephens, Benjamin Jung, William Grimson, Damon Berry, Sebastien Pardon

Articles

Presents a novel approach to sharing electronic health-care records that leverages the Internet and the World Wide Web, developed as part of two European Commission-funded projects, Synapses and SynEx. The approach provides an integrated view of patient data from heterogeneous, distributed information systems and presents it to users electronically. Synapses and SynEx illustrate a generic approach in applying Internet technologies for viewing shared records, integrated with existing health computing environments. Prototypes have been validated in a variety of clinical domains and health-care settings

Annual Report 1 September 2000 - 31 August, 2001, Dublin Institute Of Technology

DIT Annual Reports

No abstract provided.

The Dynamics Of Cultural Production In Ireland: Economic Strategy, Digital Technology And Public Policy Making, Ellen Hazelkorn

Books/Book chapters

The last ten years has seen Ireland, now dubbed the ‘Celtic tiger’ of Europe, achieve an economic about-turn. A key element of this growth has been new technology. Irish policy makers have focused increasingly on a growth strategy led by the information and communications technologies (ICTs) as a means to leapfrog historic and geographic limitations of the earlier industrial revolution and ‘jump-start’ Irish economic growth. Taking advantage of rapid social structural changes, relatively high public investment/endorsement of education and advanced skills, and a ‘natural’ reservoir of creativity, that strategy has sought to market Ireland as an ‘information gateway’, an English-speaking …

Controlling The Optical Properties Of A Conjugated Co-Polymer Through Variation Of Backbone Isomerism And The Introduction Of Carbon Nanotubes, A. Dalton, J. Coleman, M. In Het Panhuis, B. Mccarthy, A. Drury, W. Blau, J. Nunzi, Hugh Byrne

Articles

The need to control the formation of weakly emitting species in polymers such as aggregates and excimers, which are normally detrimental to device performance, is illustrated for the example of the polymer poly(m-phenylenevinylene-co-2,5-dioctyloxy-p-phenylenevinylene), using the model compound, 2,5-dioctyloxy-p-distyrylbenzene as a comparison. Two different methods, namely a Homer-Emmons polycondensation in dimethylformamide (DMF) and a Wittig polycondensation in dry toluene, have been used during synthesis resulting in a polymer with a predominantly trans-vinylene backbone and a polymer with a predominantly cis-vinylene backbone, respectively. Photoluminescence and absorption spectroscopy indicate that the polymer forms aggregate species in solution with spectra that are distinctly red-shifted …

Combining An Online And Problem-Based Approach: With Learning As The Common Denominator, Roisin Donnelly

Papers, presentations and other resources

This paper describes the design and delivery of a specialised Online Learning (OL) module in a Postgraduate Diploma in Third Level Learning and Teaching for academic staff at a higher education institute in Ireland. It is designed and delivered online with the WebCT Online Learning Environment using a Problem-based Learning (PBL) approach, with an emphasis on group learning in a real life multi-disciplinary learning environment for the module participants. The aim of the OL/PBL module is to enable the academic staff participants to become aware of the practicalities of developing, co-ordinating, supporting and evaluating an online course in their own …

A Review Of The Different Methods For Assessing Standing Balance, Jacinta Browne, N. J. O'Hare

Articles

This paper is a review of the balance assessment methods currently used to evaluate standing balance. Most of the presently available instrumentation appears to be more suited to research laboratories than to routine clinical situations. Functional assessments of balance appear to be the quickest test to administer and do not require expensive equipment however only gross changes in balance can be detected making them suitable as a screening tool for identifying subject’s needing more thorough evaluation. Force platforms appear to be most suited balance assessment instrumentation to the clinical situation since it produces a real time display and can detect …

E-Spatial Technology For Spatial Analysis And Decision Making In Web-Based Land Information Management Systems, James Carswell

Articles

In this paper we describe e-SpatialTM technology, comprising an innovative software solution for deploying integrated web-based spatial applications within Oracle 9i Database environments. The two main components of the solution are the iSMARTTM database development technology and the i-SpatialTM Information Server (iSIS). This technology allows Oracle users to build and deploy both spatially enabled and standard Internet applications without requiring any application-specific GIS source code. It can be deployed on any Oracle supported hardware platform and on any device running a Java Virtual Machine, thus providing full support for wireless, PDAs and other mobile devices. In particular, we describe a …

2001 : Faculty Of Tourism And Food , Full - Time Courses, Dublin Institute Of Technology

DIT Publications

Book of full - time courses in the faculty of tourism and food.

Information includes information on eligibility and selection, list of full - time courses, course summary information, student life at DIT etc.

2001 : Part - Time Courses, Dublin Institute Of Technology

DIT Publications

Book consisting of student information on DIT life and details of part - time courses offered in each faculty.

Typographic Legibility For Retinitis Pigmentosa Readers, Carla Benedetti

Masters

Although numerous papers have been written on the subject of legibility, there appears to be a lack of research into the relationship between printed matter and visual impairment in this context. The research aim of this thesis is to conduct a comprehensive study on the reading performance of those suffering from a particular impairment, namely Retinitis Pigmentosa and to identify typographic considerations that would improve this performance. The work confirms the importance of specially designed material and the need for specific guidelines to ensure optimum legibility for particular eye deficiencies.

Bs News

Building Services Engineering

No abstract provided.

An Atm System Model And Wireless Channel Simulation, Karen Dunne

Masters

Congestion in the low frequency regions of the electromagnetic spectrum and demand for support of high bandwidth applications has prompted widespread investigations into networking technologies and communications media. Traditional networking technologies such as Ethernet that are not capable of adequately supporting high bandwidth applications (e.g. videoconferencing) are being replaced by high speed, high bandwidth technologies such as Asynchronous Transfer Mode (ATM). In the communications media market, wireless systems are becoming ubiquitous due to their ease of installation and maintenance costs. In this research, the networking technology of interest is ATM. ATM used a cell switching architecture that allows seamless support …

Dit Independent , 1st.-31st. Of December, 2000, Dit:Students Union

DIT Student Union

No abstract provided.

Bs News

Building Services Engineering

No abstract provided.

Dit Independent, 1st.-30th. Of November, 2000, Dit:Students Union

DIT Student Union

No abstract provided.

Knowing Your Web Customers: Mission Impossible, Patrick Horan, Peter O'Connor

Conference papers

Eventually, nearly every business with a web site wants to know how much traffic their site is getting. Other information, such as how long your visitors are staying on your site, where they come from, which pages they are visiting, and how often they return will also help develop a better site. This presentation identifies the various methods of finding this information, analyses the depth of information provided by each method and ascertains which method may be right for the operation of your web site.

Dit Independent, 1st.-31st. Of October, 2000, Dit:Students Union

DIT Student Union

No abstract provided.

The Design And Performance Of An Evaporative Cooling Test Rig For A Maritime Climate, Ben Costelloe, Donal Finn

Conference Papers

Recent developments have prompted a review of the use of cooling tower based evaporative cooling technology as an effective means of cooling modern buildings. Prominent among these developments is the success of high temperature cooling systems such as radiant ceiling panels and chilled beams. At present, however, there is little published literature which gives a quantitative, in depth analysis of the performance or energy efficiency of cooling towers, used in maritime climates, in conjunction with heat exchangers and run at low approach and low wet bulb temperatures throughout the free cooling season. This lack of knowledge has meant that many …

Bs News

Building Services Engineering

No abstract provided.