Electronic & Electrical Eng (Theses and Dissertations): Recent submissions
Now showing items 61-80 of 140
-
Radical plumbers and playpumps
(Trinity College (Dublin, Ireland). Department of Electronic & Electrical Engineering, 2011)This thesis analyses the PlayPump, a water pump powered by a children's roundabout, which is designed for use in the developing world. The PlayPump is analysed as an example of 'design for development', an area of current ... -
An investigation of novel and next generation semiconductor and piezoelectric materials using Raman spectroscopic characterisation
(Trinity College (Dublin, Ireland). Department of Electronic & Electrical Engineering, 2012)Raman spectroscopy is an increasingly prevalent material characterisation technique and this work explored its application to several novel semiconductor and piezoelectric materials. Raman spectroscopy is non-destructive ... -
Amplifier front-end design in dry-electrode electrocardiography
(Trinity College (Dublin, Ireland). Department of Electronic & Electrical Engineering, 2011)This thesis presents an analytical approach to some key issues related to the design of biopotential amplifiers for use in long-term ambulatory recording of the electrocardiogram (ECG) employing pasteless or dry electrodes. ... -
Characterising the Human Auditory System using a Linear Least-Squares System Identification Approach
(Trinity College Dublin. School of Engineering. Discipline of Electronic & Elect. Engineering, 2019)Disabling hearing loss affects many millions of people around the world.Early identification and suitable interventions, e.g., the provision of hearing aids, cochlear implants, etc., can help but are limited ... -
The variational Bayes approach in signal processing
(Trinity College (Dublin, Ireland). Department of Electronic & Electrical Engineering, 2004)This thesis is concerned with Bayesian identification of parameters of linear models. Linear models are used in many important problems of Digital Signal Processing (DSP). Computationally efficient methods of parameter ... -
Efficient methods for the computation of high frequency electromagnetic wave scattering from piecewise smooth surfaces using the integral equation formulation
(Trinity College (Dublin, Ireland). Department of Electronic & Electrical Engineering, 2000)The motivation for this work is the need for rigorous, efficient, accurate and robust computational methods for implementing deterministic radio wave propagation models to enable planners and operators make good use of UHF ... -
Segmentation of textured images on three-dimensional lattices
(Trinity College (Dublin, Ireland). Department of Electronic & Electrical Engineering, 2003)The development of supervised segmentation algorithms for textured images existing on three-dimensional (3-D) lattices is the central theme of this thesis. The current state of the art in 3-D segmentation has been reviewed, ... -
The application of digital signal processing to the modelling and alleviation of auditory impairment
(Trinity College (Dublin, Ireland). Department of Electronic & Electrical Engineering, 2001)This work is concerned with the development of digital signal processing models of the unimpaired and impaired human auditory system with a view towards the development of signal processing strategies for the alleviation ... -
Numerical methods for the high speed solution of integral equations in wireless communications
(Trinity College (Dublin, Ireland). Department of Electronic & Electrical Engineering, 2001)This thesis investigates the the appropriateness of integral equations for use in determining electric field coverage over sub-urban terrain which is illuminated by an arbitrarily placed transmitter. Sub-urban terrain is ... -
Perceptually motivated audio time-frequency analysis
(Trinity College (Dublin, Ireland). Department of Electronic & Electrical Engineering, 2001)Fourier analysis has long been an indispensable tool for the investigation of signals whose frequency content does not change with time. It has likewise been of fundamental importance in engineering for the study of linear ... -
Fabrication of ultra-shallow boron junctions using proximity rapid thermal diffusion
(Trinity College (Dublin, Ireland). Department of Electronic & Electrical Engineering, 2000)This work presents proximity rapid thermal diffusion (RTD) as a technique for fabricating shallow p-type junctions for LDD devices. Boron-doped spin-on dopant (SOD) is used as a dopant source in proximity RTD. Fourier ... -
Reconfigurable software radio systems
(Trinity College (Dublin, Ireland). Department of Electronic & Electrical Engineering, 2004)Software radio has been heralded as a significant evolutionary step for wireless technology as it allows dedicated analogue radio hardware to be replaced with flexible digital signal processing. Due to current technological ... -
Effect of electric field on the polarised infrared spectra of smectic liquid crystals
(Trinity College (Dublin, Ireland). Department of Electronic & Electrical Engineering, 2000)In this research Fourier Transform Infrared Spectroscopy has been used to investigate the effect of the polarised infrared beam and the electric field on the orientational behaviour of the ferroelectric and antiferroelectric ... -
Dynamic properties of nanoparticle magnetic systems
(Trinity College (Dublin, Ireland). Department of Electronic & Electrical Engineering, 2004)This thesis is concerned with the study of the dynamic properties of magnetic nanoparticle fluids, which are an important class of physical systems where microscopic magneto-mechanical effects can be manifested. There are ... -
Investigation of Objective Neurophysiological Measures of Auditory Temporal Processing Abilities and Their Applicability in Cochlear Implant Rehabilitation
(Trinity College Dublin. School of Engineering. Discipline of Electronic & Elect. Engineering, 2019)Speech is the most important form of human communication. For people affected by disabling hearing loss, speech information may become unavailable causing social isolation and cognitive decline. People with mild to profound ... -
CMOS power estimation
(Trinity College (Dublin, Ireland). Department of Electronic & Electrical Engineering, 2003)The last decade has seen the inclusion of power consumption criteria in the list of design goals targeted by silicon designers and architects. Together with speed and area, low power is now a common part of a system ... -
3-dimensional solder paste inspection using Structured Light techniques
(Trinity College (Dublin, Ireland). Department of Electronic & Electrical Engineering, 2002)Re-modelling of three-dimensional solder paste constructed from optical profilometry has gathered ever-increasing attention in different inspection and process control sectors of the electronics Printed Circuit Board ... -
A quasi three dimensional numerical model for terrain propagation
(Trinity College (Dublin, Ireland). Department of Electronic & Electrical Engineering, 2002)Numerical modeling techniques provide a powerful tool for the optimization of modern land mobile radio communications systems. Mathematically, propagation over terrain constitutes a three-dimensional vector field problem ... -
Rendezvous and coordination in OFDM-based dynamic spectrum access networks
(Trinity College (Dublin, Ireland). Department of Electronic & Electrical Engineering, 2008)This dissertation shows that intentionally embedded cyclostationary signatures provide a robust and flexible technique for overcoming the challenge of network rendezvous and coordination in emerging Dynamic Spectrum Access ... -
Intermolecular and interlayer interaction in chiral smectic-C liquid crystals
(Trinity College (Dublin, Ireland). Department of Electronic & Electrical Engineering, 2008)The molecular and interlayer interactions in smectic-C phases have been investigated in detail. This topic is one of the less well established subjects in the field of liquid crystals. Various new physical phenomena were ...
