Institutions
|
About Us
|
Help
|
Gaeilge
0
1000
Home
Browse
Advanced Search
Search History
Marked List
Statistics
A
A
A
Show search options
Hide search options
Search using:
All
Any
None of these
Exact Phrase
in
Keyword (All Fields)
Title
Author
Subject
Institution
Funder
All
Any
None of these
Exact Phrase
in
Keyword (All Fields)
Title
Author
Subject
Institution
Funder
All
Any
None of these
Exact Phrase
in
Keyword (All Fields)
Title
Author
Subject
Institution
Funder
From
2104
2027
2021
2020
2019
2018
2017
2016
2015
2014
2013
2012
2011
2010
2009
2008
2007
2006
2005
2004
2003
2002
2001
2000
1999
1998
1997
1996
1995
1994
1993
1992
1991
1990
1989
1988
1987
1986
1985
1984
1983
1982
1981
1980
1979
1978
1977
1976
1975
1974
1973
1972
1971
1970
1969
1968
1967
1966
1965
1964
1963
1962
1961
1960
1959
1958
1957
1956
1955
1954
1953
1952
1951
1950
1949
1948
1947
1946
1945
1944
1943
1942
1941
1940
1939
1938
1937
1936
1935
1934
1933
1932
1931
1930
1929
1928
1927
1926
1925
1924
1923
1922
1921
1920
1919
1918
1917
1916
1915
1914
1913
1912
1911
1910
1909
1908
1907
1906
1905
1904
1903
1902
1901
1900
1899
1898
1897
1896
1895
1894
1893
1892
1891
1890
1889
1888
1887
1886
1885
1884
1883
1882
1881
1880
1879
1878
1877
1876
1875
1874
1873
1872
1871
1870
1869
1868
1867
1866
1865
1864
1863
1862
1861
1860
1859
1858
1857
1856
1855
1854
1853
1852
1851
1850
1849
1846
1842
1840
1839
1835
1827
1825
1821
1820
1818
1817
1815
1812
1811
1810
1809
1808
1807
1806
1805
1804
1803
1802
1801
1800
1792
1790
1770
1713
1111
1000
To
2104
2027
2021
2020
2019
2018
2017
2016
2015
2014
2013
2012
2011
2010
2009
2008
2007
2006
2005
2004
2003
2002
2001
2000
1999
1998
1997
1996
1995
1994
1993
1992
1991
1990
1989
1988
1987
1986
1985
1984
1983
1982
1981
1980
1979
1978
1977
1976
1975
1974
1973
1972
1971
1970
1969
1968
1967
1966
1965
1964
1963
1962
1961
1960
1959
1958
1957
1956
1955
1954
1953
1952
1951
1950
1949
1948
1947
1946
1945
1944
1943
1942
1941
1940
1939
1938
1937
1936
1935
1934
1933
1932
1931
1930
1929
1928
1927
1926
1925
1924
1923
1922
1921
1920
1919
1918
1917
1916
1915
1914
1913
1912
1911
1910
1909
1908
1907
1906
1905
1904
1903
1902
1901
1900
1899
1898
1897
1896
1895
1894
1893
1892
1891
1890
1889
1888
1887
1886
1885
1884
1883
1882
1881
1880
1879
1878
1877
1876
1875
1874
1873
1872
1871
1870
1869
1868
1867
1866
1865
1864
1863
1862
1861
1860
1859
1858
1857
1856
1855
1854
1853
1852
1851
1850
1849
1846
1842
1840
1839
1835
1827
1825
1821
1820
1818
1817
1815
1812
1811
1810
1809
1808
1807
1806
1805
1804
1803
1802
1801
1800
1792
1790
1770
1713
1111
1000
Optionally, filter by:
(Leave unchecked to search all fields)
Item Type
Book
Book chapter
Conference item
Contribution to newspaper/magazine
Doctoral thesis
Journal article
Master thesis (research)
Master thesis (taught)
Multimedia
Patent
Report
Review
Working paper
Other
Peer Review Status
Peer reviewed
Non peer reviewed
Unknown
Institution
All Ireland Public Health Repository
Connacht-Ulster Alliance
Dublin City University
Dublin Institute of Technology
Dundalk Institute of Technology
Lenus
Marine Institute
Mary Immaculate College
Maynooth University
NUI Galway
Royal College of Surgeons in Ireland
Teagasc
Trinity College Dublin
University College Cork
University College Dublin
University of Limerick
Funder
Enterprise Ireland (EI)
Environmental Protection Agency (EPA)
Health Research Board (HRB)
Higher Education Authority (HEA)
Irish Aid
Irish Research Council for Humanities and Social Sciences (IRCHSS)
Irish Research Council for Science Engineering and Technology (IRCSET)
Marine Institute
Science Foundation Ireland (SFI)
Teagasc
Language
Irish
English
Bulgarian
Catalan; Valencian
Chinese
Czech
Danish
Dutch; Flemish
Estonian
French
German
Greek, Modern (1453-)
Croatian
Interlingue; Occidental
Italian
Japanese
Korean
Lithuanian
Norwegian
Polish
Portuguese
Romanian; Moldavian; Moldovan
Spanish; Castilian
Serbian
Turkish
Vietnamese
Current Search:
All of 'Electronic' and 'Engineering' in all fields;
1483 items found
Sort by
Relevance
Title
Author
Item type
Date
Institution
Peer review status
Language
Order
Ascending
Descending
25
50
100
per page
1
2
3
4
5
6
7
8
9
10
Bibtex
CSV
EndNote
RefWorks
RIS
XML
Displaying Results 1 - 25 of 1483 on page 1 of 60
Marked
Mark
Electronic engineering education - an Irish perspective
(1991)
Ringwood, John
Electronic engineering education - an Irish perspective
(1991)
Ringwood, John
Abstract:
This paper describes the current approach to electronic engineering education in the School of Electronic Engineering at Dublin City University. Since the first student intake in 1979, the University has developed a range of programs to suit the needs of Irish industry, from the B.Eng degree (with single subject certification) to masters and doctoral programs with research and coursework options. In addition, the School of Electronic Engineering is committed to providing Continuing Engineering Education (CEE) which, for the most part, is integrated with the full time taught courses. Some attention is paid to the industrial training component in the undergraduate program which has been a controversial issue in Irish universities. In addition, the position of graduates within the EC is examined.
http://mural.maynoothuniversity.ie/9561/
Marked
Mark
The Implementation and Evaluation of a Problem Based Learning Pilot Module in a First Year Electronic Engineering Programme
(2014)
Lawlor, Bob; McLoone, Seamus; Meehan, Andrew
The Implementation and Evaluation of a Problem Based Learning Pilot Module in a First Year Electronic Engineering Programme
(2014)
Lawlor, Bob; McLoone, Seamus; Meehan, Andrew
Abstract:
This study involved the design, implementation and evaluation of a group Problem-Based Learning (PBL) pilot module with a cohort of first year students on the BE in Electronic Engineering Programme in the Department of Electronic Engineering, National University of Ireland, Maynooth. The pilot module was implemented during semester 2 of the 2012/13 academic year and involved a total of 18 students working in 3 project groups. The self-selecting group sizes were 5, 6 and 7. The pilot module was based on the Aalborg PBL educational model but was adapted to take account of local contextual differences such as student demographics and prior experience of group project work. The pilot module was integrated into the second semester of a four-year conventional engineering programme such that the project theme was closely associated with previous and parallel taught module content while still allowing significant scope for student direction/ownership. The project module comprised one third ...
http://mural.maynoothuniversity.ie/5653/
Marked
Mark
Integrating a PBL Pilot Module into an Electronic Engineering Programme
(2015)
Lawlor, Bob; McLoone, Seamus; Meehan, Andrew
Integrating a PBL Pilot Module into an Electronic Engineering Programme
(2015)
Lawlor, Bob; McLoone, Seamus; Meehan, Andrew
Abstract:
The Department of Electronic Engineering at Maynooth University, Ireland was established in 1999 and graduated its first cohort of engineers in 2004. In recent years, a number of faculty involved in the undergraduate electronic engineering programme have become interested in the use of problem-based learning in general and specifically in how to most effectively integrate PBL into the programme. We looked in detail at Aalborg University in Denmark where PBL has been used extensively in engineering and science education for over forty years. An engineering professor from Aalborg was invited to Maynooth in November 2011 and facilitated two PBL workshops, one aimed at the entire Maynooth University faculty and one customised specifically to an engineering education context. The following June, three faculty members from the department visited Aalborg University to observe first-hand the so-called Aalborg model which is often referred to in the literature as Project-Oriented Problem Bas...
http://mural.maynoothuniversity.ie/6808/
Marked
Mark
Transient simulation of complex electronic circuits and systems operating at ultra high frequencies
(2005)
Dautbegovic, Emira
Transient simulation of complex electronic circuits and systems operating at ultra high frequencies
(2005)
Dautbegovic, Emira
Abstract:
The electronics industry worldwide faces increasingly difficult challenges in a bid to produce ultra-fast, reliable and inexpensive electronic devices. Electronic manufacturers rely on the Electronic Design Automation (EDA) industry to produce consistent Computer A id e d Design (CAD) simulation tools that w ill enable the design of new high-performance integrated circuits (IC), the key component of a modem electronic device. However, the continuing trend towards increasing operational frequencies and shrinking device sizes raises the question of the capability of existing circuit simulators to accurately and efficiently estimate circuit behaviour. The principle objective of this thesis is to advance the state-of-art in the transient simulation of complex electronic circuits and systems operating at ultra high frequencies. Given a set of excitations and initial conditions, the research problem involves the determination of the transient response o f a high-frequency complex electr...
http://doras.dcu.ie/17281/
Marked
Mark
An online learning environment to teach artificial neural networks
(1999)
Galvin, Gareth
An online learning environment to teach artificial neural networks
(1999)
Galvin, Gareth
Abstract:
This thesis presents a study to evaluate the benefits of the Internet as an environment for Computer Aided Learning (CAL). It comprises of research into, current and previous approaches to CAL, and presents an implementation of the authors own approach, with the MEng (Masters in Electronic Engineering) course of Artificial Neural Networks (ANN’s) as a template upon which to develop courseware. CAL strives to stimulate the user interactively so as to facilitate an optimum knowledge transfer between teacher and student. This project will show th a t the Internet offers such features as hypertext, graphics, sound and video, which when incorporated correctly can engage the student and provide a more intuitive learning experience. Artificial Neural Networks were chosen as a template subject because of its iterative nature which lends itself well to graphical analysis. This, combined with its computationally intensive algorithms, lends itself well to a CAL environment. An evaluation of...
http://doras.dcu.ie/18743/
Marked
Mark
An integrated environment for computer-aided control engineering
(1989)
Hickey, John
An integrated environment for computer-aided control engineering
(1989)
Hickey, John
Abstract:
This thesis considers the construction of a system to support the total design cycle for control systems. This encompasses modelling of the plant to be controlled, specification of the final objectives or performance, design of the required controllers and their implementation in hardware and software. The main contributions of this thesis are : its development of a model for CAD support for controller design, evaluation of the software engineering aspects of CAD development, the development of an architecture to support a control system design through its full design cycle and the implementation of this architecture in a prototype package. The research undertakes a review of general design theory to develop a model for the computeraided controller design process. Current state-of-the-art packages are evaluated against this model, highlighting their shortcomings. Current research to overcome these shortcomings is then reviewed. The software engineering aspects to the design of a ...
http://doras.dcu.ie/18846/
Marked
Mark
A traffic engineering system for DiffServ/MPLS networks
(2003)
Chpenst, Alexei
A traffic engineering system for DiffServ/MPLS networks
(2003)
Chpenst, Alexei
Abstract:
This thesis presents an approach to traffic engineering that uses DiffServ and MPLS technologies to provide QoS guarantees over an IP network. The specific problem described here is how best to route traffic within the network such that the demands can be carried with the requisite QoS while balancing the load on the network. A traffic engineering algorithm that determines QoS guaranteed label-switched paths (LSPs) between specified ingress-egress pairs is proposed and a system that uses such an algorithm is outlined. The algorithm generates a solution for the QoS routing problem of finding a path with a number of constraints (delay, jitter, loss) while trying to make best of resource utilisation. The key component of the system is a central resource manager responsible for monitoring and managing resources within the network and making all decisions to route traffic according to QoS requirements. The algorithm for determining QoS-constrained routes is based on the notion of effecti...
http://doras.dcu.ie/17195/
Marked
Mark
Aspects of parallel processing and control engineering
(1991)
McKittrick, Brendan J
Aspects of parallel processing and control engineering
(1991)
McKittrick, Brendan J
Abstract:
The concept of parallel processing is not a new one, but the application of it to control engineering tasks is a relatively recent development, made possible by contemporary hardware and software innovation. It has long been accepted that, if properly orchestrated several processors/CPUs when combined can form a powerful processing entity. What prevented this from being implemented in commercial systems was the adequacy of the microprocessor for most tasks and hence the expense of a multi-processor system was not justified. With the advent of high demand systems, such as highly fault tolerant flight controllers and fast robotic controllers, parallel processing became a viable option. Nonetheless, the software interfacing of control laws onto parallel systems has remained somewhat of an impasse. There are no software compilers at present which allow a programmer to specify a control law in pure mathematical terminology and then decompose it into a flow diagram of concurrent processe...
http://doras.dcu.ie/19056/
Marked
Mark
Evaluation of data centre networks and future directions
(2017)
Sohini, Basu
Evaluation of data centre networks and future directions
(2017)
Sohini, Basu
Abstract:
Traffic forecasts predict a more than threefold increase in the global datacentre workload in coming years, caused by the increasing adoption of cloud and data-intensive applications. Consequently, there has been an unprecedented need for ultra-high throughput and minimal latency. Currently deployed hierarchical architectures using electronic packet switching technologies are costly and energy-inefficient. Very high capacity switches are required to satisfy the enormous bandwidth requirements of cloud datacentres and this limits the overall network scalability. With the maturity of photonic components, turning to optical switching in data centres is a viable option to accommodate greater bandwidth and network flexibility while potentially minimising the latency, cost and power consumption. Various DCN architectures have been proposed to date and this thesis includes a comparative analysis of such electronic and optical topologies to judge their suitability based on network performan...
http://doras.dcu.ie/21988/
Marked
Mark
‘Cheap & Cheerful’ – Demonstrating Control to 1st Year Engineering Students
(2015)
McLoone, Seamus; Maloco, John
‘Cheap & Cheerful’ – Demonstrating Control to 1st Year Engineering Students
(2015)
McLoone, Seamus; Maloco, John
Abstract:
• Illustrating the concept of system control to Electronic Engineering students is typically achieved through simulation and theory. However, we wanted a hardware demonstration ... • Existing commercial hardware products are simply too expensive and too bulky to adequately equip a typical undergraduate Engineering hardware-based laboratory … • So, we built our own !!
http://mural.maynoothuniversity.ie/6198/
Marked
Mark
Design of a static frequency converter suitable for aircraft power systems
(1991)
Rahal, Ahmad
Design of a static frequency converter suitable for aircraft power systems
(1991)
Rahal, Ahmad
Abstract:
Aircraft electrical systems use a three-phase, 400 HZ, AC Bus supplied by engine driven generators. In an effort to simplify and improve the production of AC power for aircraft and to eliminate the need for hydromechanical constant-speed drive (CSD), a number of systems have been devised for producing 400 HZ three-phase electric power using electronic circuitry. This has been made possible by some of the major advances in solid-state technology developed in recent years. One of these systems is a DC-Link converter, which has a variable input frequency but a constant output frequency. This offer a viable alternative to the CSD as means of providing a constant frequency power supply from an aircraft generator. The ease of replacement and repair, the reduction in servicing needs, and the ability to locate the components of the electrical systems through the aircraft all combine to bring about a considerable reduction in the maintenance time required. This thesis discusses aircraft g...
http://doras.dcu.ie/19292/
Marked
Mark
Application of neural network in control of a ball-beam balancing system
(1991)
Jiang, Yuhong
Application of neural network in control of a ball-beam balancing system
(1991)
Jiang, Yuhong
Abstract:
Neural networks can be considered as a massively parallel distributed processing system with the potential for ever improving performance through dynamical learning. The power of neural networks is in their ability to learn and to store knowledge. Neural networks purport to represent or simulate simplistically the activities of processes that occur in the human brain. The ability to learn is one of the main advantages that make the neural networks so attractive. The fact that it has been successfully applied in the fields of speech analysis, pattern recognition and machine vision gives a constant encouragement to the research activities conducted in the application of neural networks technique to solve engineering problems. One of the less investigated areas is control engineering. In control engineering, neural networks can be used to handle multiple input and output variables of nonlinear function and delayed feedback with high speed. The ability of neural networks to control engi...
http://doras.dcu.ie/18896/
Marked
Mark
On highly oscillatory problems arising in electronic engineering
(2009)
Condon, Marissa; Deaño, Alfredo; Iserles, Arieh
On highly oscillatory problems arising in electronic engineering
(2009)
Condon, Marissa; Deaño, Alfredo; Iserles, Arieh
Abstract:
In this paper, we consider linear ordinary differential equations originating in electronic engineering, which exhibit exceedingly rapid oscillation. Moreover, the oscillation model is completely different from the familiar framework of asymptotic analysis of highly oscillatory integrals. Using a Bessel-function identity, we expand the oscillator into asymptotic series, and this allows us to extend Filon-type approach to this setting. The outcome is a time-stepping method that guarantees high accuracy regardless of the rate of oscillation.
http://doras.dcu.ie/4698/
Marked
Mark
Digital current loop control of a brushless DC motor
(1987)
Cox, Noel Patrick
Digital current loop control of a brushless DC motor
(1987)
Cox, Noel Patrick
Abstract:
Servo control of motors has important applications m such areas as robotics, numerically controlled machines and 'fly by wire* aircraft systems. The development of high power high coercivity magnetic alloys, such as samarium cobalt, has led to the advent of the brushless dc machine, which offers a more advantageous alternative to the brush machine. The brushless DC machine eliminates the need for brush contacts, through the use of electronic commutation. It has better thermal characteristics, as the rotor does not carry any current, and the rotor moment of inertia tends to be smaller than an equivalent brush machine. To achieve servo performance with a brushless dc machine requires the control of the motors torque angle. This thesis proposes digital control schemes for torque angle control, presents a simulation of the motor system with the schemes implemented, and concludes that digital schemes are more advantageous than analog control schemes, in the context of torque angle c...
http://doras.dcu.ie/18450/
Marked
Mark
Inspection of the integrity of surface mounted integrated circuits on a printed circuit board using vision
(1991)
Yakoub, Imad
Inspection of the integrity of surface mounted integrated circuits on a printed circuit board using vision
(1991)
Yakoub, Imad
Abstract:
Machine vision technology has permeated many areas of industry, and automated inspection systems are playing increasingly important roles in many production processes. Electronic manufacturing is a good example of the integration of vision based feedback in manufacturing and the assembly of surface mount PCBs is typical of the technology involved. There are opportunities to use machine vision during different stages of the surface mount process. The problem in the inspection of solder joints on surface mount printed circuit board is much more difficult than many other inspection problems. In this thesis, an approach for inspecting surface mounted integrated circuits (SMICs) is presented. It is based on the variance of intensity values of pixels in an image. This method is able to cope with 4 kinds of soldering defects in SMICs. A set of modules for the system is proposed. The computer program which performs the image processing and analyzing has been written in C. It has been link...
http://doras.dcu.ie/19490/
Marked
Mark
Forecasting Requirements in the Optimal Control of Wave Energy Converters.
(2009)
Fusco, Francesco
Forecasting Requirements in the Optimal Control of Wave Energy Converters.
(2009)
Fusco, Francesco
Abstract:
Research Report: EE/2009/2/JVR
http://mural.maynoothuniversity.ie/1718/
Marked
Mark
Internet-based computer-aided learning for artificial neural networks
(1998)
Keeling, Paul J
Internet-based computer-aided learning for artificial neural networks
(1998)
Keeling, Paul J
Abstract:
This thesis presents research performed to mvestigate the potential offered by the Internet for the implementation of an Engineering Computer-Aided Learning (CAL) environment. The research comprises two categories, a detailed literature survey of CAL and its application through the medium of the Internet environment. As a direct result of the literature survey, the scope of CAL can be considered to comprise the use of text, graphics, animations and sound. It is through the use of the CAL media that the true power of computer-aided education can be realized. The research performed focuses on student motivation, with emphasis placed on the educational environment. The Internet as a CAL environment was chosen for evaluation in this thesis due to its ability to convey information in a variety of contexts to any student with Internet access Courseware was developed for the M Eng (Masters in Engineering) program, specifically in the field of Artificial Neural Networks (ANNs) ANNs lend t...
http://doras.dcu.ie/18911/
Marked
Mark
The development of an intelligent mobile manitenance workstation for application in automated CNC machine repair
(1991)
Houreh, Mustafa
The development of an intelligent mobile manitenance workstation for application in automated CNC machine repair
(1991)
Houreh, Mustafa
Abstract:
The project focuses on electronic repair in CNC machine. This is justified given that electronic causes determine a high percentage of automated CNC machine failures. An intelligent maintenance workstation is proposed as a vehicle for redressing the problem of uncertainty in the skill level of repair staff and as a means of enhancing the pace of repair under normal circumstances. The suitability of expert systems in electronic fault diagnosis is established through a review of the literature and a realistic role for an expert system in the definition of the workstation is determined. Circuit interrogation is carried out using a combination of instruments, probes and driving software written in 'C'. Procedural guidance available from the expert system and detailed circuit knowledge is reproducible in the workstation from pre stored CAD data base files. In the absence of a CNC machine to carry out the implementation, a partial implementation only was possible. However all ...
http://doras.dcu.ie/18855/
Marked
Mark
Optimising the efficiency of coherent optical packet switched networks
(2015)
Walsh, Anthony John
Optimising the efficiency of coherent optical packet switched networks
(2015)
Walsh, Anthony John
Abstract:
There is a continuing need to increase throughput in optical networks to satisfy the demands of internet applications. However, the non-linear Shannon capacity of standard single mode fibre is being approached. Also, almost all of the power used in optical networks is used by electronic routers. One possible solution to deal with both problems is to use optical packet switching. Optical packet switching uses fast switching tuneable lasers, which can change wavelength in the order of a several nanoseconds, to dynamically vary wavelength assignments in a network, and thus achieve routing in the network without electronic routers. In addition, fast wavelength assignment reduces waiting times, resulting in better utilization of network resources. However, the frequency dynamics of the tuneable lasers after switching wavelengths increases the waiting times required to successfully transmit data packets. In this thesis, frequency and phase dynamics of a tuneable laser transmitter, after...
http://doras.dcu.ie/20646/
Marked
Mark
Simulation of the impact of stress induced piezoelectric charge in GaAs MESFETs
(1995)
Baric, Adrijan
Simulation of the impact of stress induced piezoelectric charge in GaAs MESFETs
(1995)
Baric, Adrijan
Abstract:
This work presents the methodology involved in applying numerical electronic device simulation, and specifically, the application of this methodology to the study of piezoelectric effects in GaAs MESFETs. Firstly, a three-dimensional (3D) numerical simulation package EVEREST, developed for the simulation of silicon electronic devices, has been enhanced by the introduction and verification of models for GaAs device physics. Then a 2D finite element program for the simulation of mechanical stresses in the MESFET structure and a program for the extraction of piezoelectric charge from the numerically calculated stresses have been produced. The force load model applied to the metal/dielectric/GaAs structure is suggested as a good mathematical representation of the physical processes involved. The impact of stress induced piezoelectric charge, substrate doping and varying gate length on the electrical characteristics of epitaxial and ion-implanted MESFETs have been determined by numerical...
http://doras.dcu.ie/18323/
Marked
Mark
Hands on with electronic textiles (E-textiles) – promoting technology through craft and design
(2015)
Coyle, Shirley; Bird, Aoibheann; Diamond, Dermot
Hands on with electronic textiles (E-textiles) – promoting technology through craft and design
(2015)
Coyle, Shirley; Bird, Aoibheann; Diamond, Dermot
Abstract:
Novel wearable technologies are changing the way we live – not only supplying us with the desired information in an instant but also in monitoring health, fitness and lifestyle. While smartwatches and similar devices are dominating the “Wearables” trend, smart garments with textile based electronic systems have the capability to enhance the functionality of our clothing. This creates a new interface to interact with our own body and its surrounding environment.
http://doras.dcu.ie/20929/
Marked
Mark
Nonlinear dynamics of DC-DC converters
(2016)
Hayes, Brendan
Nonlinear dynamics of DC-DC converters
(2016)
Hayes, Brendan
Abstract:
Power electronic converters are time-varying, nonlinear dynamical systems. They exhibit a wide range of steady-state responses. The desired behaviour is a stable periodic motion around a predefined value with a frequency that is equal to that of the external clock. However, as parameters vary the operation can lose stability and go from one regime to another. Such phenomena are termed bifurcations and can degrade the output performance of the converter. Hence, it is of practical importance to know the conditions that cause such bifurcations to occur and to design the system so that it operates in the desired region. In the past, engineers have typically analysed the stability of power electronic systems by linearising the model about a fixed point. This captures the low-frequency properties while ignoring the detailed dynamics occurring at frequencies higher than the external clock. However, the demand for better functionality, reliability and performance means an in-depth analysis ...
http://doras.dcu.ie/21351/
Marked
Mark
The Ybox: a front-end processing engine for web community based applications
(2003)
Frawley, Liam
The Ybox: a front-end processing engine for web community based applications
(2003)
Frawley, Liam
Abstract:
This document describes the YBox framework that enables web application developers to rapidly develop web applications for the Java 2 Enterprise Edition (J2EE) platform, The YBox is a fully implemented and tested framework that provides a “front-end” for Servlet Containers and contains functionality that all userbased web applications for virtual communities require. The YBox extends the functionality of the Servlet Container and the Servlet 2.3 API and is implemented in a platform independent manner, which means the YBox will run on any operating system or any Servlet Container. As a result of extra functionality added by the YBox, the presentation logic is clearly separated from the business logic in a web application. This also enables the web application to provide content to more client types and automatically perform form validation on all web forms submitted from clients. The YBox framework also allows the web application designer to control access to protected content from o...
http://doras.dcu.ie/17339/
Marked
Mark
Automated microscopic analysis of optical fibre transmission surfaces
(2005)
Ryan, Kieran
Automated microscopic analysis of optical fibre transmission surfaces
(2005)
Ryan, Kieran
Abstract:
Outlined in this thesis is the design of a prototype device for the inspection of optical fibre endfaces. The device designed uses lenses with different magnification’s to acquire scaled microscopic images of the endfaces for analysis purposes. The design specifications for the device are established based on the optical transmission requirements of the fibres and the impact of defects on transmission losses in various regions of the optical fibre endface. The specifications of this device are as follows: • Optical System o 3 lens automated changeover • Imaging System: o Minimum Resolvable Object Size of 2.43j.im o Maximum Field of View of 0.9mm o Resolution of 740 X 560 pixels • Autofocus System with Focus Resolution of 1.25pm • Coaxial Illumination System • 12Mbits/sec USB video acquisition hardware The device designed realises all the mechanical, optical and electronic functionality required to automate the inspection process of optical fibres. The hardware and software challeng...
http://doras.dcu.ie/18200/
Marked
Mark
Modelling of signal uncertainty and control objectives in robust controller design
(1996)
Bates, Declan G.
Modelling of signal uncertainty and control objectives in robust controller design
(1996)
Bates, Declan G.
Abstract:
This work develops a new paradigm for optimal robust controller synthesis in the frequency domain. A detailed examination is made of the engineering motivation and engineering efficacy underlying the various strands of robust control theory. The modelling of (a) signal uncertainty and (b) control system objectives in both Tioo and C\ control theories is considered in particular detail. Based on this examination, a theory which can fa irly be described as ‘a m odified 7ioo control theory’ or ‘a frequency domain C\ control theory’ is proposed. New signal sets for the modelling of uncertain signals are introduced. It is argued that these models more faithfully capture the way in which uncertain signals act on real physical systems. It is shown that by adopting these new models for uncertain signals, control theory can be used to non-conservatively minimise maximum tracking errors in the time domain, in the SISO case. In the MIMO case, the problem of optimally synthesising a controller ...
http://doras.dcu.ie/18328/
Displaying Results 1 - 25 of 1483 on page 1 of 60
1
2
3
4
5
6
7
8
9
10
Bibtex
CSV
EndNote
RefWorks
RIS
XML
Item Type
Book chapter (30)
Conference item (387)
Doctoral thesis (203)
Journal article (345)
Master thesis (research) (8)
Report (6)
Working paper (1)
Other (503)
Institution
Dublin City University (463)
NUI Galway (81)
Maynooth University (489)
Trinity College Dublin (298)
University College Cork (24)
University College Dublin (24)
University of Limerick (29)
Dublin Institute of Technology (72)
Lenus (1)
Connacht-Ulster Alliance (2)
Peer Review Status
Peer reviewed (705)
Non peer reviewed (76)
Unknown (702)
Year
2021 (5)
2020 (24)
2019 (20)
2018 (37)
2017 (44)
2016 (50)
2015 (42)
2014 (63)
2013 (58)
2012 (87)
2011 (107)
2010 (106)
2009 (97)
2008 (87)
2007 (106)
2006 (96)
2005 (99)
2004 (86)
2003 (57)
2002 (31)
2001 (29)
2000 (29)
1999 (16)
1998 (14)
1997 (13)
built by Enovation Solutions