3,541 research outputs found
Oral history interview with Ralph Wilkerson, February 22, 2004
No full text1 electronic record(s) and derivatives. 2 audio file (wav, mp3) 865470588 bytes. 01:21:25. 4 PDF documents (3 scans, jp2). 961 MB (1,007,966,659 bytes).Oral history interview with Ralph Wilkerson, February 22, 2004. Waycross (Ga.). Fieldworker: Timothy C. Prizer. Audio file digitized from cassette tape. Part of the South Georgia Folklife Project at Valdosta State University Archives and Special Collections.
Mr. Wilkerson speaks of his life working in the turpentine woods and stills of south Georgia. He worked from childhood to adulthood in the woods and then worked at the turpentine still in Hoboken, GA until 1982, when he left the turpentine industry for good. He now works at the sawmill at Varn Wood Products in Hoboken, GA
Time ordering in spontaneous parametric down-conversion
No full textWe consider the multi‐mode parametric down‐conversion Hamiltonian that governs the evolution of the fields inside a nonlinear crystal. If the Hamiltonian does not commute with itself at all times—as is the case for the multimode down‐conversion Hamiltonian—then the expansion of the evolution operator must take the form of the time‐ordered Dyson series, as opposed to the simplified Taylor series. By expanding the evolution operator to third order, the conditions under which the Taylor series is a valid approximation are revealed. In addition, some new and interesting behaviour is predicted
Increasing Distributed Generation Penetration using Soft Normally-Open Points
No full textThis paper considers the effects of various voltage control solutions on facilitating an increase in allowable levels of distributed generation installation before voltage violations occur. In particular, the voltage control solution that is focused on is the implementation of `soft' normally-open points (SNOPs), a term which refers to power electronic devices installed in place of a normally-open point in a medium-voltage distribution network which allows for control of real and reactive power flows between each end point of its installation sites. While other benefits of SNOP installation are discussed, the intent of this paper is to determine whether SNOPs are a viable alternative to other voltage control strategies for this particular application. As such, the SNOPs ability to affect the voltage profile along feeders within a distribution system is focused on with other voltage control options used for comparative purposes. Results from studies on multiple network models with varying topologies are presented and a case study which considers economic benefits of increasing feasible DG penetration is also given
Suite no. 3, BWV 1009
No full textMore Author/Title Info: Johann Sebastian Bach ; edition for double bass by Timothy Cobb.
Uniform Title: Suites, cello, BWV 1009, C major; arranged
Physical Description: 2 scores (8 pages) ; 28 c
Romance, op. 50
No full textMore Author/Title Info: Ludwig van Beethoven ; editions for double bass and piano by Timothy Cobb.
Uniform Title: Romances, violin, orchestra, op. 50, F major; arranged
Physical Description: 2 scores (10 pages) + 2 parts (4 pages) ; 28 c
Spacetime effects on satellite-based quantum communications
No full textWe investigate the consequences of space-time being curved on space-based quantum communication protocols. We analyze tasks that require either the exchange of single photons in a certain entanglement distribution protocol or beams of light in a continuous-variable quantum key distribution scheme. We find that gravity affects the propagation of photons, therefore adding additional noise to the channel for the transmission of information. The effects could be measured with current technology
Quantum estimation of the Schwarzschild spacetime parameters of the Earth
No full textWe propose a quantum experiment to measure with high precision the Schwarzschild spacetime parameters of the Earth. The scheme can also be applied to measure distances by taking into account the curvature of the Earth's spacetime. As a wave packet of (entangled) light is sent from the Earth to a satellite it is redshifted and deformed due to the curvature of spacetime. Measurements after the propagation enable the estimation of the spacetime parameters. We compare our results with the state of the art, which involves classical measurement methods, and discuss what developments are required in space-based quantum experiments to improve on the current measurement of the Schwarzschild radius of the Earth
Evaluating Research Impact through Open Access to Scholarly Communication
No full textScientific research is a competitive business – in order to secure funding, promotion and tenure researchers must demonstrate their work has impact in their field. To maximise impact researchers undertake high priority research, aim to get results first, and publish in the highest impact journals. The Internet now presents a new opportunity to the scholarly author seeking higher impact: s/he can now make their work instantly accessible on the Web through author self-archiving. This growing body of open access literature (coupled with new publishing models that make journals available for-free to the reader) maximises research impact by maximising the number of people who can read it, and making it available sooner. Open access also provides a new opportunity for bibliometric research. This thesis describes the relatively recent phenomenon of open access to research literature, tools that were built to collect and analyse that literature, and the results of analyses of the effect of open access and its effect on author behaviour. It shows that articles self-archived by authors receive between 50-250% more citations, that rapid pre-printing on the Web has dramatically reduced the peak citation rate from over a year to virtually instant and how citation-impact – now widely used for evaluation – can be expanded to include a new web metric of download impact
2000 Commencement Address: G. Timothy Johnson, M.D.
No full textTimothy Johnson, M.D., medical editor for ABC News will deliver the principal address and receive an honorary degree at the 154th commencement exercises at the College of the Holy Cross on Friday, May 26, beginning at 10:30 a.m. at Fitton Field.
Johnson, one of the nation’s leading medical communicators of health care information, has provided commentary on medical problems and answers for viewers since 1975. In addition to commentary on Good Morning America, Johnson provides on-air analysis of medical news for World News Tonight, Nightline and 20/20. He consults with ABC News regardingcoverage of medical news. He is also medical editor for WCVB-TV, Channel 5 in Boston.
Johnson holds joint positions in medicine at Harvard University and Massachusetts General Hospital in Boston. He is the founding editor of the Harvard Medical School Health Letter and co-editor of the Harvard Medical School Health Letter Book. He is also coeditor of the book, “Your Good Health,” published by Harvard Press, as well as co-author with former US Surgeon General Dr. C. Everett Koop of the book, “Let’s Talk,” published by Zondervan in 1992.
He originally intended to join the ministry and graduated from the North Park Seminary in 1963. Two years later he decided to enter medicine. Johnson, who is a Phi Beta Kappa graduate of Augustana College, graduated summa cum laude from Albany Medical College and holds a master’s degree in public health from Harvard University. Johnson served as an assisting minister at the Community Covenant Church in West Peabody, Mass.https://crossworks.holycross.edu/commence_address/1012/thumbnail.jp
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