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Articles 8611 - 8640 of 9157
Full-Text Articles in Entire DC Network
Fuzzy Knowledge-Based Approach To Treating Uncertainty In Inventory Control, Dobrilla Petrovic, Edward Sweeney
Fuzzy Knowledge-Based Approach To Treating Uncertainty In Inventory Control, Dobrilla Petrovic, Edward Sweeney
Articles
Inventory control in complex manufacturing environments encounters various sources of uncertainity and imprecision. This paper presents one fuzzy knowledge-based approach to solving the problem of order quantity determination, in the presence of uncertain demand, lead time and actual inventory level. Uncertain data are represented by fuzzy numbers, and vaguely defined relations between them are modeled by fuzzy if-then rules. The proposed representation and inference mechanism are verified using a large numbers of examples. The results of three representative cases are summarized. Finally a comparison between the developed fuzzy knowledge-based and traditional, probabilistic approaches is discussed.
Part-Time Courses 1994-95, City Of Dublin Vocational Education Committee
Part-Time Courses 1994-95, City Of Dublin Vocational Education Committee
Prospectus: Bolton Street
Courses for the College of Technology, Bolton Street, Dublin 1.
The Dit Examiner: The Newspaper Of The Dublin Institute Of Technology Students' Union January, 1994, Dit: Students' Union
The Dit Examiner: The Newspaper Of The Dublin Institute Of Technology Students' Union January, 1994, Dit: Students' Union
DIT Student Union
No abstract provided.
The Dit Examiner: The Newspaper Of The Dublin Institute Of Technology Students' Union April, 1994, Dit: Students' Union
The Dit Examiner: The Newspaper Of The Dublin Institute Of Technology Students' Union April, 1994, Dit: Students' Union
DIT Student Union
No abstract provided.
Comparison Of Self Pulsation In Multisection Lasers With Distributed Feedback And Intracavity Satuarable Absorbers, P. Phelan, D. Mcdonald, A. Egan, Joe Hegarty, R. O'Dowd, Gerald Farrell, S. Lingren
Comparison Of Self Pulsation In Multisection Lasers With Distributed Feedback And Intracavity Satuarable Absorbers, P. Phelan, D. Mcdonald, A. Egan, Joe Hegarty, R. O'Dowd, Gerald Farrell, S. Lingren
Articles
The authors report a comparison of the self-pulsing characteristics of two types of semiconductor laser. They show that the self-pulsing frequency of the DFB laser is decoupled from the resonance frequency. They discuss the various characteristics, their significance in relation to optical synchronisation, and use the results to suggest a possible explanation for the mechanism for self-pulsation in the DFB laser.
A Frequency Domain Based Self-Tuning Pid Controller, John Ringwood, Aidan O'Dwyer
A Frequency Domain Based Self-Tuning Pid Controller, John Ringwood, Aidan O'Dwyer
Conference papers
Traditionally, both explicit and implicit self-tuning controllers have employed time domain techniques for the identification and tracking of plant and controller parameters. The use of the frequency domain provides concise information on the dynamics of the process which has led to its wide acceptance as a domain for controller design. This paper demonstrates a method employing recursive, on-line measurement of the process frequency response, with a straightforward calculation of PID controller parameters. The computational effort involved is comparable with that of a time domain technique.
Model Parameter And Time Delay Estimation Using Gradient Methods, Aidan O'Dwyer, John Ringwood
Model Parameter And Time Delay Estimation Using Gradient Methods, Aidan O'Dwyer, John Ringwood
Conference papers
A number of approaches have been proposed for parameter and time delay estimation of process models in single input, single output (SISO) control systems using gradient descent algorithms; some of these approaches involve the selection of a rational polynomial that is used to approximate time delay variations. This paper takes a generalised approach to the investigation of the most appropriate choice of the rational polynomial, and the gradient descent algorithm, to be used.
The Dit Examiner: The Newspaper Of The Dublin Institute Of Technology Students' Union November, 1994, Dit: Students' Union
The Dit Examiner: The Newspaper Of The Dublin Institute Of Technology Students' Union November, 1994, Dit: Students' Union
DIT Student Union
No abstract provided.
Using Statistics In Industry - Quality Improvement Through Total Process Control, Edward Sweeney, Gordon Betteley, Neville Mettrick, David Wilson
Using Statistics In Industry - Quality Improvement Through Total Process Control, Edward Sweeney, Gordon Betteley, Neville Mettrick, David Wilson
Books/Book chapters
No abstract provided.
An Expert System-Based Approach To Hospitality Company Diagnosis, Andrew Balfe, Peter O'Connor, Ciaran Mcdonnell
An Expert System-Based Approach To Hospitality Company Diagnosis, Andrew Balfe, Peter O'Connor, Ciaran Mcdonnell
Conference papers
This paper describes the development of a prototype Expert System-based Analysis and Diagnostic (ESAD) package for the Hotel and Catering Industry. This computerised tool aids the hospitality manager in methodically scrutinising the hotel unit and environment, combining key information with systematic reasoning. The system searches through its extensive knowledge base, investigating complicated relationships. The number of possibilities considered is increased which will broaden the depth and breadth of the analysis and therefore should improve the quality of the managers decision making.
Information For Transferee Students : 1994, Dublin Institute Of Technology
Information For Transferee Students : 1994, Dublin Institute Of Technology
DIT Publications
Pamphlet with information explaining how to apply as a transferee student and to set out the general guidelines used by the DIT as a basis for the evaluation of such applicants.
Department Of Architecture And Town Planning Dit Bolton Street, 1992-1994, Dublin Institute Of Technology
Department Of Architecture And Town Planning Dit Bolton Street, 1992-1994, Dublin Institute Of Technology
DIT Publications
In 1992 James Horan, a practicing Architect and lecturer in DIT was appointed Head of the Department of Architecture and Town Planning. A new wind of change could be heard through the corridors of Bolton Street where the school is located. OfT, once a dream, had emerged from the City of Dublin, VEC cocoon. Mr. Horan's task is to help and guide the department into and beyond the new framework. One such task was to mark the occasion with this publication.
Certificate In Electronics, Dublin Institute Of Technology
Certificate In Electronics, Dublin Institute Of Technology
Prospectus: Kevin Street
No abstract provided.
Exergetic Cost Analysis Of A Mechanical Exergy Recycle, Jim Mcgovern
Exergetic Cost Analysis Of A Mechanical Exergy Recycle, Jim Mcgovern
Conference Papers
A mechanical plant that involves an exergy recycle is presented for analysis. It consists of gearboxes and a fluid coupling. There is one input of shaft power to the plant and there are three separate outputs of shaft power. An exergetic cost analysis approach is outlined and applied to the plant.
Learning Society And Low Unemployment: Education And Training In Low Unemployment Countries, Anto Kerins
Learning Society And Low Unemployment: Education And Training In Low Unemployment Countries, Anto Kerins
Books / Book chapters
Ireland is a world leader in literature, music and well bred horses. She has also done well in economic growth, foreign trade and low inflation. However, in unemployment she is also, unfortunately, a world leader. This book approaches the jobs crisis in Ireland by reflecting on the experience of five relatively low unemployemnt nations: Austria, Japan, Norway and Sweden. This book offers a wide range of ideas and proposals on how to reduce our unemployment.
Fulltime Course Prospectus : 1993, Dublin Institute Of Technology
Fulltime Course Prospectus : 1993, Dublin Institute Of Technology
Prospectus: Kevin Street
Fulltime course prospectus for the academic year 1993. Includes introduction by principal Francis M. Brennan. Information on eligibility and selection, how to apply, grants and scholarships etc.
All Optical Timing Extraction With Frequency Division Using A Twin Section Laser Diode, Gerald Farrell, P. Phelan, Joe Hegarty, J. A. Shields
All Optical Timing Extraction With Frequency Division Using A Twin Section Laser Diode, Gerald Farrell, P. Phelan, Joe Hegarty, J. A. Shields
Articles
All-optical timing extraction from a coded line signal with division of the extracted clock frequency is demonstrated using a single twin-section self-pulsating laser diode. Either the bit-rate clock or a submultiple of the bit-rate clock can be extracted, depending only on the dc biases applied to the self-pulsating laser diode. Timing extraction is carried out for the first time without optical injection locking of the self-pulsating laser diode by the optical data source.
College Of Technology, Bolton Street Prospectus 1993-94, City Of Dublin Vocational Education Committee
College Of Technology, Bolton Street Prospectus 1993-94, City Of Dublin Vocational Education Committee
Prospectus: Bolton Street
Courses for the College of Technology, Bolton Street, Dublin 1.
Repointing Mortars For Conservation Of A Historic Stone Building In Trinity College, Dublin, Aidan Duffy, Tim P. Cooper, Simon H. Perry
Repointing Mortars For Conservation Of A Historic Stone Building In Trinity College, Dublin, Aidan Duffy, Tim P. Cooper, Simon H. Perry
Articles
With atmospheric pollution causing building stone to decay at accelerated rates, conservation of historic stone monuments is becoming an increasingly important issue. Mortar joints have a marked effect on how moisture moves in a wall and, hence, on how the wall weathers. Not only does mortar bind stones together, but also a good mortar will prevent the ingress of moisture (and pollutants), enable the buildings to dry out, accommodate movement and will not act as a source of harmful chemicals capable of attacking the surrounding stone. Thus, poor mortar can have deleterious effects on the stonework. This paper, which is …