Browsing Electronic & Electrical Eng (Scholarly Publications) by Sponsor "Enterprise Ireland"
Now showing items 1-20 of 38
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Anomalous dielectric relaxation in an N-fold cosine potential
(American Physical Society, 2003)The fractional Klein-Kramers (Fokker-Planck) equation describing the fractal time dynamics of an assembly of fixed axis dipoles rotating in an N-fold cosine potential representing the internal field due to neighboring ... -
Automated processing of shoeprint images based on the Fourier transform for use in forensic science
(IEEE, 2005)The development of a system for automatically sorting a database of shoeprint images based on the outsole pattern in response to a reference shoeprint image is presented. The database images are sorted so that those from ... -
Automatic classification of heartbeats using ECG morphology and heartbeat interval features
(IEEE, 2004)A method for the automatic processing of the electrocardiogram (ECG) for the classification of heartbeats is presented. The method allocates manually detected heartbeats to one of the five beat classes recommended by ... -
Blind Source Separation of Speech in Hardware
(IEEE, 2005)This paper presents preliminary work on a hardware implementation of a source separation algorithm employing time-frequency masking methods. DUET (Degenerate Unmixing Estimation Technique) has previously been shown to ... -
Classification and representation of semantic content in broadcast tennis videos
(IEEE, 2005)This paper investigates the semantic analysis of broadcast tennis footage. We consider the spatio-temporal behaviour of an object in the footage as being the embodiment of a semantic event. This object is tracked using ... -
Comparison of the characteristics of the chiral analog of the de Vries type of smectic-A* phase
(The American Physical Society, 2003)In this paper we compare the results of three ferroelectric materials that exhibit unusual smectic-A (SmA) phases. These phases have been assigned to chiral analogs of the de Vries SmA phase. Several experimental techniques ... -
Effect of ZnS Shell Thickness on the Phonon Spectra in CdSe Quantum Dots
(The American Physical Society, 2003)The evolution of the optical phonon spectra of colloidal core/shell CdSe/ZnS quantum dots with an increase of the shell thickness from 0.5 to 3.4 monolayers has been studied by resonant Raman spectroscopy. The results ... -
Effects of induced steric hindrance on the dielectric behavior and H bonding in the supercooled liquid and vitreous alcohol
(American Institute of Physics, 2001)The reasons of Debye-type dielectric relaxation in monohydroxy alcohols were investigated by studying the effects of steric hindrance on dielectric behavior and hydrogen bonding in alcohols. Broadband dielectric spectroscopy ... -
Fast Image Interpolation for Motion Estimation using Graphics Hardware,
(SPIE, 2004)Motion estimation and compensation is the key to high quality video coding. Block matching motion estimation is used in most video codecs, including MPEG-2, MPEG-4, H.263 and H.26L. Motion estimation is also a key component ... -
FTIR and Raman Investigation of Vertically Etched Silicon as 1-D Photonic Crystal
(SPIE, 2003)The reflection spectra of composite materials on the base of grooved silicon and grooved silicon infiltrated with nematic liquid crystal (LC) have been calculated using the optimal parameters of a grooved silicon matrix ... -
Graphics Hardware for Gradient Based Motion Estimation
(SPIE, 2004)Motion estimation and compensation is a key component in video procesing. Motion estimation is necessary for high quality compression. It is also a key component in archive video restoration and motion picture post-production. ... -
Inertial effects in anomalous dielectric relaxation
(American Physical Society, 2002)The inertia corrected Debye model of rotational Brownian motion of polar molecules is generalized to fractional dynamics (anomalous diffusion) in the context of the fractional Klein-Kramers equation. The fractal generalization ... -
Inertial effects in anomalous dielectric relaxation of symmetrical top molecules
(American Physical Society, 2004)The linear dielectric response of an assembly of noninteracting symmetrical top molecules (each of which is free to rotate in space) is evaluated in the context of fractional dynamics. The infinite hierarchy of ... -
Inertial effects in the anomalous dielectric relaxation of rotators in space
(American Physical Society, 2002)The linear dielectric response of an assembly of noninteracting linear (needlelike) dipole molecules (each of which is free to rotate in space) is evaluated in the context of fractional dynamics. The infinite hierarchy of ... -
Inertial effects in the anomalous dielectric relaxation of rotators in space
(American Physical Society, 2002)The linear dielectric response of an assembly of noninteracting linear (needlelike) dipole molecules (each of which is free to rotate in space) is evaluated in the context of fractional dynamics. The infinite hierarchy of ... -
Interpolation formula between very low and intermediate-to-high damping Kramers escape rates for single-domain ferromagnetic particles
(American Physical Society, 2001)It is shown that the Mel?nikov-Meshkov formalism for bridging the very low damping (VLD) and intermediate-to-high damping (IHD) Kramers escape rates as a function of the dissipation parameter for mechanical particles may ... -
Investigation into the Structure and Composition of Carbon/Carbon-SiC Composites
(2003)In this work, pyrolytical carbon and C-SixCy-SiC coatings were deposited by chemical vapour deposition (CVD) in a 'Cold Wall' reactor. The C/C samples from 'Schunk Kohlenstofftechnik GmbH', Germany were used as substrates. ... -
Joint Audio Visual Retrieval for Tennis Broadcasts,
(IEEE, 2003)In recent years, there has been increasing work in the area of content retrieval for sports. The idea is generally to extract important events or create summaries to allow personalisation of the media stream. While previous ... -
Local Field Effect on Infrared Phonon Frequencies of Thin Dielectric Films
(SPIE, 2003)A number of thin dielectric films deposited onto aluminated glass substrates and onto the materials transparent in the IR range (silicon, KRS-5 and CsI) were investigated using infrared transmission and reflection-absorption ... -
Localized relaxation in a glass and the minimum in its orientational polarization contribution
(American Institute of Physics, 2002)The dielectric permittivity and loss spectra of the glassy state of 5-methyl-2-hexanol obtained by quenching it from the liquid state has been studied. In one experiment, the spectra were studied at different temperatures ...