Browsing Electronic & Electrical Eng by Title
Now showing items 177-196 of 717
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Discontinuous change in the smectic layer thickness in ferrielectric liquid crystals
(2007)The temperature dependence of the thickness of thick free-standing films is studied using a high-resolution film thickness measurement technique. A small discontinuity in the temperature dependence of the smectic layer ... -
Discrete flexoelectric polarizations and biaxial subphases with periodicities other than 3- and 4-layers in chiral smectic liquid crystals frustrated between ferroelectricity and antiferroelectricity
(2005)The subphase for the temperature range that lies in between Sm-CA* and the three-layer Sm-CA*(1 3) subphase has been confirmed to exist using the measurements of electric-field-induced birefringence, optical rotation, and ... -
Discriminitive Multi-Resolution Sub-Band and Segmental Phonetic Model Combination
(2000)A joint discriminative framework for multi-resolution sub-band HMMs and a hybrid segmental phonetic model is presented which combines independent likelihood scores using class dependent weightings trained to a minimum ... -
Dissociative CdSe/ZnS quantum dot-molecule complex for luminescent
(2010)The optical properties of dissociative luminescent sensors based on a complex consisting of highly luminescent hydrophobic core/shell CdSe/ZnS quantum dots QDs and 1- 2-pyridilazo -2-naphtol PAN molecules in organic ... -
Doped quantum dots for photovoltaics
(OSA, 2014) -
Double quantum dot photoluminescence mediated by incoherent reversible energy transport
(2010)We present a theoretical study of the stationary photoluminescence of two, direct-gap, semiconductor nanocrystals, taking into account electronic excitation energy-transfer processes due to electrostatic interaction. ... -
Double-Cavity Fabry-Perot Resonators Based on One-Dimensional Silicon Photonic Crystals
(AIP Publisher, 2018) -
Downlink Transmission in FBMC-based Massive MIMO with Co-located and Distributed Antennas
(2024)This paper introduces a practical precoding method for the downlink of Filter Bank Multicarrier-based (FBMC-based) massive multiple-input multiple-output (MIMO) systems. The proposed method comprises a two-stage precoder, ... -
Dual Band LTE Planar Inverted-F Antnna for M2M Applications
(2013)A Planar Inverted-F Antenna for M2M applications is presented. The antenna is located on a rectangular ground plane and operates across both LTE frequency bands (690-960 MHz) and (1710-2690 MHz). The low cost antenna has ... -
Dynamic Block-Edge Masks (BEMs) for Dynamic Spectrum Emission Masks (SEMs)
(2010)This paper explores the evolving role of transmitter spectrum masks in the emerging paradigm of service and technology neutral spectrum planning. We advocate the use of more dynamic approaches to spectrum mask generation ... -
Dynamic Features for Segmental Speech Recognition
(IEEE, 1996)Speech models and features that emphasise the dynamic aspects of speech can provide improved speech recognition. The cepstral time matrix has been established as a successful method of encoding dynamics. The paper extends ... -
Dynamic mechanism of the ferroelectric to antiferroelectric phase transition in chiral smectic liquid crystals
(2008)We report on the observation of V-shaped switching in a ferroelectric liquid crystal cell over a wide range of temperatures. Results of the optical transmittance in the visible region give us the helical pitch for various ... -
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 ... -
Dynamic spectrum access and coexistence experiences involving two independently developed cognitive radio testbeds
(IEEE, 2007)The Centre for Telecommunications Value-Chain Research (CTVR) and the Center for Wireless Telecommunications (CWT) are carrying out joint research work investigating the potential of different software-defined radio ... -
Dynamic spectrum access in LTE-advanced networks
(2014)As early as 2014, mobile network operators? spectral capacity will be overwhelmed by the demand brought on by new devices and applications. To augment capacity and meet this demand, operators may choose to deploy a Dynamic ... -
Dynamic Spectrum Scheduling for Carrier Aggregation: A Game Theoretic Approach
(2013)In this paper, we investigate the performance of the dynamic allocation of resources between separate cellular networks. We propose a Dynamic Internetworking Carrier Aggregation (DI-CA) framework which involves every ... -
Dynamic susceptibilities of an assembly of dipolar particles in an elastic environment
(American Physical Society, 2001)Theoretical model to describe magnetodynamics of a ferrogel, i.e., an assembly of ferromagnetic nanoparticles embedded in a gel, is proposed. The reorientations of the particles are determined by the influence of the elastic ... -
Dynamic Time Warping for Acoustic Response Interpolation: Possibilities and Limitations
(2009)We present a novel method for the interpolation of the direct and early reflection components in acoustic impulse responses. The method utilizes Dynamic Time Warping for automated temporal alignment of the sparse reflections. ... -
Dynamics of Collective and Molecular Modes of a Ferroelectric Liquid Crystal in Confined Geometry Using Dielectric Spectroscopy.
(American Physical Society, 1997)Two aerogel systems containing a ferroelectric liquid crystal (FLC) with smectic phases over a wider temperature range are investigated using dielectric spectroscopy. The second order transition from Sm- A to Sm-Cp is ...