Now showing items 179-198 of 407

• #### Hierarchical robot path planning using a distributed blackboard ﻿

(1990)
Hierarchical path planning techniques for Intelligent Autonomous Mobile Robots (IAMRs) attempt to subdivide the overall task of path planning into several layers. This subdivision is made more difficult by the physical ...

(1970)
• #### High performance distributed denial-of-service resilient Web cluster architecture ﻿

(2006)
Though the WWW has come a long way since when it was monikered the World Wide Wait, it is still not reliable during heavy workload conditions. Overloads due to flash arrival of users or diurnal workload patterns are known ...
• #### High-performance MPI libraries for Ethernet ﻿

(2005)
A MPI library performs two tasks---computation on behalf of the application, and communication in the form of sending and receiving messages among processes forming the application. Efficient communication is key to a ...
• #### High-throughput optical code-division multiple access communication systems ﻿

(1993)
Optical communication systems offer a bandwidth orders of magnitude larger than any electric or radio-frequency system. Yet, historically, optical communication systems have been designed by adapting existing conventional ...
• #### 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 ...
• #### 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 ...
• #### 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 ...
• #### 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 ...

(1973)
• #### 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 ...
• #### 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 ...
• #### Intersymbol interference equalization by universal likelihood ﻿

(1997)
Codelength based inference is used to decode binary symbols distorted by an inter-symbol interference (ISI) channel with additive noise. The transmitted signals are antipodal waveforms constructed from $\pm$1 valued signature ...
• #### Inverse model for the extraction of biological parameters from ovarian tissue fluorescence spectra and multivariate classifiers for tissue diagnosis ﻿

(2007)
We present an inverse model to decompose bulk fluorescence spectra and extract tissue biological parameters. By deconvolving the effects of absorption and scattering from measured spectra, we are able to extract the intrinsic ...
• #### Inverse problems in image processing ﻿

(2004)
Inverse problems involve estimating parameters or data from inadequate observations; the observations are often noisy and contain incomplete information about the target parameter or data due to physical limitations of the ...
• #### Investigating self-assembly of functionalized nanotubes and peptides by tunneling microscopy ﻿

(2006)
Scanning tunneling microscopy (STM) is an ideal tool for probing the chemistry and physics of these types of nanostructures. Building upon on our previous carbon nanotube research, we have investigated thiol and thiophene ...
• #### Investigation of graphitic nanostructures and nanomachines ﻿

(2010)
Carbon allotropes such as nanotubes, graphene, and buckyball all preserve the same lattice structure. However, their electronic properties are very different depending on their dimensionality. These nanostructures can be ...