Jeffrey Snyder

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Accurate detection and forecasting of severe storms has driven radar tornado probing as an important research topic that has added significantly to the understanding and prediction of severe weather phenomena. The need for close range observation, coupled with the fact that significant information is buried at low altitudes, has made mobile Doppler radars(More)
Sports analytics is a fascinating problem area in which to apply statistical learning techniques. This thesis brings new data to bear on the problem of predicting the outcome of a soccer match. We use frequency counts of in-game events, sourced from the Manchester City Analytics program, to predict the 380 matches of the 2011-2012 Premier League season. We(More)
Motivated by reports of exceptionally high zT > 2 in thin film superlattices or ‘‘quantum well’’ materials with nanometer sized features, we have undertaken a study of composite materials with nanoscale features that promise to provide similar structures in bulk material. Nanometer scale layers of PbTe and Sb2Te3 with periodicities of 180 nm to 950 nm form(More)
Development of Circuit Switched Digital Capability (CSDC) in the United States and the general evolution toward an integrated digital services network worldwide has created interest in the development of 56 or 64 kbps digital coders for audio signals with 6 or 7 kHz bandwidth. To date there have been a number of coders proposed but no formal testing of(More)
The Jet Propulsion Laboratory (JPL), Pratt & Whitney Rocketdyne, and Teledyne Energy Systems, Inc., have teamed together under JPL leadership to develop the next generation of advanced thermoelectric space reactor power conversion systems. The program goals are to develop the technologies needed to achieve a space nuclear power system specific mass goal(More)
The Zintl compound Ca5Al2Sb6 is a promising thermoelectric material with exceptionally low lattice thermal conductivity resulting from its complex crystal structure. In common with the Al analogue, Ca5In2Sb6 is naturally an intrinsic semiconductor with a low p-type carrier concentration. Here, we improve the thermoelectric properties of Ca5In2Sb6 by(More)