Zobrazeno 1 - 10 of 44 pro vyhledávání: '"D. B. Sullivan"'
1
Primary Atomic Frequency Standards at NIST
Autor: James C. Bergquist, Fred L. Walls, David J. Wineland, Thomas E. Parker, John J. Bollinger, Wayne M. Itano, D. M. Meekhof, Robert E. Drullinger, Jefferts, W D. Lee, D. B. Sullivan
Publikováno v: Journal of Research of the National Institute of Standards and Technology
The development of atomic frequency standards at NIST is discussed and three of the key frequency-standard technologies of the current era are described. For each of these technologies, the most recent NIST implementation of the particular type of st
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6913c111c5a47bc56cb42460027c6e9b
https://pubmed.ncbi.nlm.nih.gov/27500017
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2
PARCS: NASA’s laser-cooled atomic clock in space
Autor: D.J. Seidel, Leo W. Hollberg, Thomas P. Heavner, Elizabeth A. Donley, Neil Ashby, Steven R. Jefferts, William D. Phillips, William Klipstein, D. B. Sullivan
Publikováno v: Advances in Space Research. 36:107-113
The Primary Atomic Reference Clock in Space (PARCS) mission is designed to perform certain tests of relativity theory, to study the performance of individual GPS space-vehicle clocks, to study the dynamics of atom motion in microgravity, to advance t
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::cade8d8d657412e9b891ebe36b2f4e3b
https://doi.org/10.1016/j.asr.2005.03.126
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3
Time generation and distribution
Autor: Judah Levine, D. B. Sullivan
Publikováno v: Proceedings of the IEEE. 79:906-914
The authors present a broad overview of time and frequency technology, particularly those trends relating to the generation and distribution of time and frequency signals. The authors provide a general look at these trends. They refer the reader to o
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::4c50db8d0e1584a394cc09db7e884a74
https://doi.org/10.1109/5.84966
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4
Out of this world: The future of atomic clocks
Autor: D. B. Sullivan, William Klipstein, Thomas E. Parker, Thomas P. Heavner, D.J. Seidel, Leo W. Hollberg, Neil Ashby, Elizabeth A. Donley, Steven R. Jefferts, D.E. Brinza
Publikováno v: Postconference Digest Quantum Electronics and Laser Science, 2003. QELS..
Summary form only given. The development of future atomic clocks at the National Institute of Standards and Technology (NIST) is discussed. The atomic fountain clock called NIST-F1, the primary frequency standard at NIST, is designed to measure the e
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::6a46f26b120a8400bddd319a63846f2f
https://doi.org/10.1109/qels.2003.237957
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5
Design studies for a laser-cooled space clock
Autor: Hugh Robinson, Leo W. Hollberg, Neil Ashby, Thomas P. Heavner, Robert E. Drullinger, Fred L. Walls, Steven R. Jefferts, D. B. Sullivan, Jon H. Shirley
Publikováno v: Proceedings of the 1998 IEEE International Frequency Control Symposium (Cat. No.98CH36165).
We present a theoretical comparison between a TE/sub 01n/ cavity and a traditional Ramsey cavity when used with a laser-cooled atom source in a microgravity clock.
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::8346ab74b1de4254f54ad074ebc388e3
https://doi.org/10.1109/freq.1998.717876
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7
A laser-cooled Atomic Clock in Space
Autor: David Seidel, Thomas P. Heavner, A Demarchi, William Klipstein, Steven R. Jefferts, Steven L. Rolston, Thomas E. Parker, John Kitching, William D. Phillips, Leo W. Hollberg, Jon H. Shirley, Lutfollah Maleki, Robert J. Thompson, D. M. Meekhof, D. B. Sullivan, Neil Ashby, F.L. Walls, Hugh Robinson, L. Young, S. Wu, Robert F. C. Vessot
Publikováno v: AIP Conference Proceedings.
This paper describes work aimed at producing a “Primary Atomic Reference Clock in Space (PARCS),” scheduled for flight on the International Space Station in 2004. The microgravity environment of space will allow this clock to achieve an uncertain
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::c2af05730a051a6cba5a7ab93dee5252
https://doi.org/10.1063/1.1302564
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8
Managing diversity in hospitals
Autor: R H, Schwartz, D B, Sullivan
Publikováno v: Health care management review. 18(2)
Hospital work force diversity, although potentially a source of creativity and improved problem solving, is often a source of political strife and the mistreatment of people based on their identification with one or another of the diverse groups that
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::f66b7921f859ff844e80fbc69219eb97
https://pubmed.ncbi.nlm.nih.gov/8320106
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10
Distal interphalangeal joint abnormalities in children with polyarticular juvenile rheumatoid arthritis
Autor: J M, Zerin, D B, Sullivan, W, Martel
Publikováno v: The Journal of rheumatology. 18(6)
Involvement of the distal interphalangeal (DIP) joints was noted radiographically in 24 (43.6%) of 55 patients with polyarticular juvenile rheumatoid arthritis. DIP changes were apparent later in the course of the disease and were less severe than in
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::d80695e0fb8e38a1241a05119d6e9379
https://pubmed.ncbi.nlm.nih.gov/1895269
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