Now showing items 611-630 of 1735

(1986)
• #### General-purpose architectures for media processing and database workloads ﻿

(2000)
Workloads on general-purpose computing systems have changed dramatically over the past few years, with greater emphasis on emerging compute-intensive applications such as media processing and databases. However, until ...
• #### Generalized Beamforming for MIMO Systems with Limited Transmitter Information ﻿

(2003-11-20)
In this work, we investigate the outage performance of beamforming schemes in wireless systems equipped with multiple transmit and receive antennas. In particular, we analyze the outage performance of unit rank beamforming ...
• #### Generalized Digital Butterworth Filter Design ﻿

(1995-01-15)
This paper presents a formula-based method for the design of IIR filters having more zeros than (nontrivial) poles. The filters are designed so that their square magnitude frequency responses are maximally-flat at <i>m</i> ...
• #### Generalized Digital Butterworth Filter Design ﻿

(1996-01-15)
This paper presents a formula-based method for the design of IIR filters having more zeros than (nontrivial) poles. The filters are designed so that their square magnitude frequency responses are maximally-flat at <i>m</i> ...
• #### Generalized Joint Signal Representations and Optimum Detection ﻿

(1996-01-20)
Generalized joint signal representations (JSRs) extend the scope of joint time-frequency representations (TFRs) to a richer class of nonstationary signals, but their use, just as in the case of TFRs, has been primarily ...
• #### Generalized likelihood ratio detection for fMRI using complex data ﻿

(1999-04-20)
The majority of fMRI studies obtain functional information using statistical tests based on the magnitude image reconstructions. Recently, a complex correlation (CC) test was proposed based on teh complex image data in ...
• #### GENERALIZED REPLACEMENT IN ITERATIVE RESTORATION ALGORITHMS ﻿

(1983)
A new formulation of an iterative restoration algorithm is presented in this dissertation for the solution of noisy, non-linear restoration problems. The constraints and distortions are assumed to be known and are modeled ...
• #### Generation of diffraction-free beams for applications in optical microlithography ﻿

(1997-03-01)
A new concept based on a Fabry–Perot interferometer for the generation of nondiffracting Bessel beams is described and proposed for potential applications in microlithography such as the fabrication of small isolated ...
• #### Generation of nearly nondiffracting Bessel beams with a Fabry–Perot interferometer ﻿

(1997-11-01)
A new concept for generating zero-order Bessel beams was studied theoretically. The spatial intensity distribution was calculated numerically using a wave optics model. Approximate analytical expressions were derived to ...
• #### Genomic Detection Using Sparsity-inspired Tools ﻿

(2011)
Genome-based detection methods provide the most conclusive means for establishing the presence of microbial species. A prime example of their use is in the detection of bacterial species, many of which are naturally vital ...
• #### A Geometric Hidden Markov Tree Wavelet Model ﻿

(2003-08-01)
In the last few years, it has become apparent that traditional wavelet-based image processing algorithms and models have significant shortcomings in their treatment of edge contours. The standard modeling paradigm exploits ...
• #### Geometric Methods for Wavelet-Based Image Compression ﻿

(2003-08-01)
Natural images can be viewed as combinations of smooth regions, textures, and geometry. Wavelet-based image coders, such as the space-frequency quantization (SFQ) algorithm, provide reasonably efficient representations for ...
• #### Geometric Tools for Image Compression ﻿

(2002-11-01)
Images typically contain strong geometric features, such as edges, that impose a structure on pixel values and wavelet coefficients. Modeling the joint coherent behavior of wavelet coefficients is difficult, and standard ...
• #### Geometry Compression of Normal Meshes using Rate-Distortion Algorithms ﻿

(2003-06-01)
We propose a new rate-distortion based algorithm for compressing 3D surface geometry represented using triangular normal meshes. We apply the Estimation-Quantization (EQ) algorithm to compress normal mesh wavelet coefficients. ...

(1971)
• #### Getting Real: A Naturalistic Methodology for Using Smartphones to Collect Mediated Communications ﻿

(2012)
This paper contributes an intentionally naturalistic methodology using smartphone logging technology to study communications in the wild. Smartphone logging can provide tremendous access to communications data from real ...
• #### Giant tunable Faraday effect in a semiconductor magneto-plasma for broadband terahertz polarization optics ﻿

(2012)
We report on a giant Faraday effect in an electron plasma in n- InSb probed via polarization-resolved terahertz (THz) time-domain spectroscopy. Polarization rotation angles and ellipticities reach as large as π/2 and ...
• #### GNOMES: A Testbed for Low-Power Heterogeneous Wireless Sensor Networks ﻿

(2003-05-20)
Continuing trends in sensor, semiconductor and communication systems technology (smaller, faster, cheaper) make feasible very dense networks of fixed and mobile wireless devices for use in many different sensing and ...
• #### Gold nanoshells: Optical properties and femtosecond electron dynamics ﻿

(1998)
The chemistry, optical properties, and femtosecond electron dynamics of gold nanoshells are described. The gold nanoshells consist of Au-coated Au$\sb2$S nanoparticles prepared via aqueous phase chemistry using HAuCl$\sb4$ ...