Browsing ECE Theses and Dissertations by Title
Now showing items 257-276 of 597
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Identification by laser desorption ionization mass spectroscopy of large fullerenes formed during the growth of single-walled carbon nanotubes in the HiPco process
(2004)Iron catalyzed gas-phased disproportionation of carbon monoxide under high pressure is known to produce carbon Single Walled Nano-Tubes (SWNT). Non-tubular carbon by products and iron encapsulated-graphitic shelled ... -
Image compression using multiscale geometric edge models
(2002)Edges are of particular interest for image compression, as they communicate important information, contribute large amounts of high-frequency energy, and can generally be described with few parameters. Many of today's most ... -
IMAGE DATA COMPRESSION AND RECONSTRUCTION BASED ON FREQUENCY DOMAIN CONSIDERATIONS AND PARTIAL DIFFERENTIAL EQUATION MODELS
(1981)The image data compression and reconstruction problems are investigated in this dissertation, and new techniques for their solution are presented. Conventional image transform coding techniques are given a spatial domain ... -
Image data compression using wavelet decomposition
(1995)Wavelet-based multi-resolution representation has become a cutting-edge technology in the area of image data compression. Though the discrete wavelet transform is closely related to the perfect-reconstruction octave-band ... -
Imaging and Visual Classification by Knowledge-Enhanced Compressive Imaging
(2015-09-10)Compressive imaging is a technology that uses multiplexed measurements and the sparsity of many natural images to efficiently capture and reconstruct images. The compressive single pixel camera is one embodiment of such ... -
Imaging Plasmons with Compressive Hyperspectral Microscopy
(2015-04-23)With the ability of revealing the interactions between objects and electromagnetic waves, hyperspectral imaging in optical microscopy is of great importance in the study of various micro/nano-scale physical and chemical ... -
Impact of lens aberrations and partial coherence on intra-field critical dimensions of dark gate lines
(1997)Across-field variations of lens aberration and partial coherence can have undesirable effects on critical dimension (CD) uniformity and depth of focus (DOF) of printed patterns. The principal objective of this work is to ... -
Impeded photo-oxidation of conducting polymer films using metal nanoshells
(2000)Interest in the use of conducting polymers as the active layer in electroluminescent devices has grown steadily over the last decade, and the commercialization of such devices is imminent. The stumbling block to the ... -
Implementation issues of multiuser detection in CDMA communication systems
(1999)Multistage detectors have been accepted in designs for next generation CDMA base stations because they are less complex than some other multiuser detectors. In this thesis, we propose a differencing method to further reduce ... -
Implementing Energy Parsimonious Circuits through Inexact Designs
(2011)Inexact Circuits or circuits in which accuracy of the output can be traded for cost (energy, delay and/or area) savings, have been receiving increasing attention of late due to invariable inaccuracies in nanometer-scale ... -
Importance sampling for analysis of direct detection optical communication systems
(1991)Analytical solutions of the performance of optical communication systems are difficult to obtain and often, Monte Carlo simulations are used to achieve realistic estimates of the performance of such systems. However, for ... -
Improved haptic fidelity via reduced sampling period with an FPGA-based real-time hardware platform
(2007)The challenge of displaying stiff virtual walls in a haptic interaction is the inspiration for this document. The fidelity of their implementation necessitates high virtual stiffness integrated with passive device behavior. ... -
Improving the speed vs. accuracy tradeoff for simulating shared-memory multiprocessors with ILP processors
(1998)Current simulators for shared-memory multiprocessor architectures involve a large tradeoff between simulation speed and accuracy. Most simulators assume much simpler processors than the current generation of processors ... -
Increasing temporal, structural, and spectral resolution in images using exemplar-based priors
(2013-09-16)In the past decade, camera manufacturers have offered smaller form factors, smaller pixel sizes (leading to higher resolution images), and faster processing chips to increase the performance of consumer cameras. However, ... -
Indelible Physical Randomness for Security: Silicon, Bisignals, Biometrics
(2014-11-11)In this thesis, I investigate the nature and properties of several indelible physical randomness phenomena. I leverage these indelible statistical properties to design robust and efficient security systems. Three different ... -
Inference by Reparameterization using Neural Population Codes
(2015-12-04)Behavioral experiments on humans and animals suggest that the brain performs probabilistic inference to interpret its environment. Here we present a general-purpose, biologically plausible implementation of approximate ... -
Information theory of transmit diversity and space-time code design
(2000)We restate the achievable information rates for multiple transmit multiple receive antenna systems in fast fading channels. Then we consider non-ergodic channel, where we evaluate asymptotic expression for the outage ... -
Integral manifold based control design of an electromechanical system
(1997)The control problem of an electromechanical system becomes more complex when the flexibility and friction are taken into account in the system model. To approach this problem, an electromechanical system is studied in this ... -
Interfacial charge transfer in nanoscale polymer transistors
(2009)Interfacial charge transfer plays an essential role in establishing the relative alignment of the metal Fermi level and the energy bands of organic semiconductors. While the details remain elusive in many systems, this ...
