Telcordia Technologies

About: Telcordia Technologies is a based out in . It is known for research contribution in the topics: Network packet & Node (networking). The organization has 3097 authors who have published 4737 publications receiving 237882 citations.

Testing Variance Components in Mixed Models with Generalized p Values

Abstract: A procedure for testing one-sided hypotheses on variance components in a balanced random effects model is developed. The testing is performed on the basis of a generalized p value and involves a one-dimensional numerical integration. In the special case for which the conventional methods provide an exact test, this test is equivalent to the usual F test. The test is also generalized Bayes in the sense that, under a certain diffuse prior, the p value is numerically the same as the posterior probability of the null hypothesis.

Excitonic and phonon-mediated optical Stark effects in a conjugated polymer.

Abstract: We have investigated the subresonant optical response of the polydiacetylene PTS using stimulated inverse Raman spectroscopy. The data exhibit energy-dependent line-shape variations which are caused by the optical Stark effect on the exciton-phonon and exciton-ground-state transitions. These are the first observations of both phonon-mediated and excitonic optical Stark effects in a 1D conjugated polymer

The AURORA gigabit testbed

Abstract: AURORA is one of five U.S. networking testbeds charged with exploring applications of, and technologies necessary for, networks operating at gigabit per second or higher bandwidths. The emphasis of the AURORA testbed, distinct from the other four testbeds, BLANCA, CASA, NECTAR and VISTANET, is research into the supporting technologies for gigabit networking. Like the other testbeds, AURORA itself is an experiment in collaboration, where government initiative (in the form of the Corporation for National Research Initiatives, which is funded by DARPA and the National Science Foundation) has spurred interaction among pre-existing centers of excellence in industry, academia, and government. AURORA has been charged with research into networking technologies that will underpin future high-speed networks. This paper provides an overview of the goals and methodologies employed in AURORA, and points to some preliminary results from our first year of research, ranging from analytic results to experimental prototype hardware. This paper enunciates our targets, which include new software architectures, network abstractions, and hardware technologies, as well as applications for our work.

Gain equalization multiwavelength lightwave systems using acoustooptic tunable filters

Abstract: An acoustooptic tunable filter is used to compensate for the gain spectrum variations in multiwavelength lightwave systems containing cascaded fiber amplifiers. Demonstrations of such systems using a circulating loop containing a fiber amplifier and an acoustooptic tunable filter have shown that differential gain compensations of up to 14 dB can be achieved for two arbitrary injected wavelengths. >

Fractal based image coding scheme using Peano scan

Abstract: The authors describe an image compression system that incorporates Peano scan with a fractal-based coding scheme for intraframe compression and achieves high picture quality with a bit rate of >