Browsing by Subject "Electronic & Electrical Engineering"
Now showing items 1-20 of 160
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Anisotropic rotational diffusion and transient nonlinear responses of rigid polar macromolecules in a strong external electric field
(American Institute of Physics, 2007)Nonlinear transient responses of polar polarizable particles (macromolecules) diluted in a nonpolar solvent to a sudden change in magnitude of a strong external dc field are evaluated using the anisotropic noninertial ... -
Anomalous dependence of response time on the electric field in an electroclinic liquid crystal with large induced tilt and polarization
(2009)We investigate the response time of an electroclinic liquid crystal with large induced tilt and polarization (de Vries smectic A*). The response time is found to increase with the increase in electric field up to a threshold ... -
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 ... -
Anomalous nonlinear dielectric and Kerr effect relaxation steady state responses in superimposed ac and dc electric fields
(American Institute of Physics, 2007)It is shown how the rotational diffusion model of polar molecules (which may be described in microscopic fashion as the diffusion limit of a discrete time random walk on the surface of the unit sphere) may be extended to ... -
Antiferroelectric dielectric relaxation processes and the interlayer interaction in antiferroelectric liquid crystals
(2008)Antiphase relaxation process of antiferroelectric phase is investigated in binary mixtures of antiferroelectric and ferroelectric liquid crystalline compounds. It is found that the frequency of the antiphase mode ranges ... -
Automated Segmentation of Torn Frames using the Graph Cuts Technique
(2007)Film Tear is a form of degradation in archived film and is the physical ripping of the film material. Tear causes displacement of a region of the degraded frame and the loss of image data along the boundary of tear. In ... -
A Bayesian Framework for Recursive Object Removal in Movie Post-Production
(IEEE, 2003)Some of the most convincing film and video effects are created in digital post-production by removing apparatus that supports or manipulates actors and objects. Wires and people, for instance, can be removed by digitally ... -
Bimodal approximation for anomalous diffusion in a potential
(American Physical Society, 2004)Exact and approximate solutions of the fractional diffusion equation for an assembly of fixed-axis dipoles are derived for anomalous noninertial rotational diffusion in a double-well potential. It is shown that knowledge ... -
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 ... -
Calculation of the rise transient and relaxation time of the induced dipole Kerr effect
(American Physical Society, 1996)The exact calculation of the rise transient of the birefringence and the corresponding relaxation times by different theoretical methods is described, in particular the Kerr-effect response of an assembly of nonpolar but ... -
Characterisation of Macro-porous Silicon for Electronic Applications
(SPIE, 2003)Micro-Raman spectroscopy was used in this study for the analysis of the influence of process conditions on the strain and stress in macro-porous layers. As expected, it was found that oxidation results in significant wafer ... -
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 ... -
Comment on Submillimeter spectroscopic study of concentrated electrolyte solutions as high density plasma
(American Institute of Physics, 2003)The authors of the title article: (1) contrary to their findings did not fully comprehend that in our paper [Phys. Chem. Chem. Phys., 3, 523 (2001)], the estimated contribution of ions oscillating between the two "reflecting ... -
Comparison of methods for the calculation of superparamagnetic relaxation times
(American Physical Society, 1996)A general expression for the correlation time of the decay of the magnetization of an assembly of singledomain noninteracting ferromagnetic particles is given in terms of the inverse of the Fokker-Planck operator. The ... -
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 ... -
Composition and Stress Analysis in Si/SiGe Structures
(IEEE, 2004)Strained Si tecbnology enables improvements in CMOS performance and functionality via replacement of the bulk, cubic-crystal Si substrate witb a Si substrate that contains a tetragonally distorted, biaxially strained ... -
Computer-controlled submillimeter Fourier spectrometer
(IEEE, 1989)A system for a submillimeter wave Fourier transform spectroscopy (FTS) has been automated for the measurement of the power absorption coefficient of liquids in the wavenumber range 10- 400 cm-?. The interferometer is ... -
Computer-controlled submillimeter Fourier spectrometer
(IEEE, 1989)Abstract-A system for a submillimeter wave Fourier transform spectroscopy (FTS) has been automated for the measurement of the power absorption coefficient of liquids in the wavenumber range 10- 400 cm-?. The interferometer ... -
Conformational distribution of a ferroelectric liquid crystal revealed using fingerprint vibrational spectroscopy and the density functional theory
(2007)The authors have investigated the conformational structure of the ferroelectric liquid crystal compound 4-3-methyl-2-chloropentanoyloxy- 4? -hexyloxy-biphenyl also known under the abbreviations 3M2CPHOB and C6 using ...