This thesis presents Convivo, a VoIP system designed to provide reliable voice communication for poor quality networks, especially those found in rural areas of the developing world. Convivo introduces an original approach to maintain voice communication interaction in presence of poor network

Map interpretation remains a critical step in solving the structure of a macromolecule. Errors introduced at this early stage may persist throughout crystallo-graphic refinement and result in an incorrect struc-ture. The normally quoted crystallographic residual is often a poor description

boundary surfaces are presented. Independence of shading and classification calculations insures an undistorted visualization of 3-D shape. Non-binary classification operators insure that small or poorly defined features are not IosL The resulting colors and opacities am composited from back to front along

State of the art, real-time, rate-adaptive, multimedia applications adjust their transmission rate to match the available network capacity. Unfortunately, this source-based rate-adaptation performs poorly in a heterogeneous multicast environment because there is no single target rate

The web contains a wealth of product reviews, but sifting through them is a daunting task. Ideally, an opinion mining tool would process a set of search results for a given item, generating a list of product attributes (quality, features, etc.) and aggregating opinions about each of them (poor

Com bus tion of poor qual ity coals and wastes is used to day world wide for en ergy pro duc tion. How ever, this en tails sig nif i cant en vi ron men tal risks due to the pres ence of pol lut ing com pounds in them, i. e. S, N, Hg, and Cl. In the com plex en vi ron ment of com bus tion these sub

session cochairmen and included representation from industry, universities, and t government. The program was organized to provide a comprehensive review of space missions requiring large antenna systems and of the status of key technologies required to enable these missions. In addition to the formal sessions, three forums were conducted on topics of i • current special interest. Forum topics were Systems Studies, Limitations of Ground i Testing, and Structure and Control Interaction. Proceedings of the forums are not! included in this publication. The general cochairmen for the conference were Dell P. Williams, Director,

There is growing, but belated, concern that much of the developing world’s supply of medicines—in particular, its supply of anti-infective drugs—is of poor quality. This constitutes a major public health pro-blem because the high prevalence of poor quality drugs in developing countries results

Reproductive health has been deleteriously affected by poor quality medicines. Emergency contraceptive pills (ECPs) are an important birth control method that women can use after unprotected coitus for reducing the risk of pregnancy. In response to the detection of poor quality ECPs commercially

subsystem. For human vision exploitation, a few poor quality image frames out of hundreds in a digital image sequence may be only a minor irritation when the sequence runs at the typical 30 frames per second. Of course, if that human needs to examine each frame, a system that automatically removes