296,856 research outputs found
Liu, Mengxiong
University of Michigan, Ann Arbor, MI, School of Informational & Library Studies, Ph.D., 1990
University of Denver, Denver, CO, Graduate School of Librarianship & Information Management, M.L.S., 1983
International Studies University, Shanghai, China, English Department, B.A., 1968https://scholarworks.sjsu.edu/erfa_bios/1273/thumbnail.jp
Doppler effects on velocity spectra observed by MST radars
Recently, wind data from mesophere-stratosphere-troposphere (MST) radars have been used to study the spectra of gravity waves in the atmosphere (Scheffler and Liu, 1985; VanZandt et al., 1985). Since MST radar measures the line-of-sight Doppler velocities, it senses the components of the wave-associated velocities along its beam directions. These components are related through the polarization relations which depend on the frequency and wave number of the wave. Therfore, the radar-observed velocity spectrum will be different from the original gravity-wave spectrum. Their relationship depends on the frequency and wave number of the wave as well as the propagation geometry. This relation can be used to interpret the observed data. It can also be used to test the assumption of gravity-wave spectrum (Scheffler and Liu, 1985). In deriving this relation, the background atmosphere has been assumed to be motionless. Obviously, the Doppler shift due to the background wind will change the shape of the gravity-wave power spectrum as well as its relation with the radar-observed spectrum. Here, researcher's investigate these changes
Legislative Alert: Nomination of Goodwin Liu
[Excerpt] I am writing on behalf of the AFL-CIO in support of the nomination of Professor Goodwin Liu to the U.S. Court of Appeals for the Ninth Circuit. Professor Liu is extraordinarily well-qualified and I urge you to vote for cloture, and to vote for his confirmation
Towards symmetric scheme for superdense coding between multiparties
Recently Liu, Long, Tong and Li [Phys. Rev. A 65, 022304 (2002)] have
proposed a scheme for superdense coding between multiparties. This scheme seems
to be highly asymmetric in the sense that only one sender effectively exploits
entanglement. We show that this scheme can be modified in order to allow more
senders to benefit of the entanglement enhanced information transmission.Comment: 6 page
One-Liners
One liners from: N.M. Martinez-Rossi, C. Andrade-Monteiro and S.R.C. Pombeiro; M. Orbach ; H. Liu and TJ. Schmidhauser; P.A. Hubbard and C.H. Wilso
Review of Lydia H. Liu, The Clash of Empires: The Invention of China in Modern World Making.
Lydia H. Liu, The Clash of Empires: The Invention of China in Modern World Making. Cambridge: Harvard University Press, 2004. 318 pp. ISBN 0674019959
Review of Lydia H. Liu, The Clash of Empires: The Invention of China in Modern World Making.
Lydia H. Liu, The Clash of Empires: The Invention of China in Modern World Making. Cambridge: Harvard University Press, 2004. 318 pp. ISBN 0674019959
Excited Heavy Baryon Masses from the 1/N_c Expansion of HQET
The mass spectra of the L=1 orbitally excited heavy baryons with light quarks
in both the spin-flavor symmetric and the mixed representations are studied by
the expansion method in the framework of the heavy quark effective
theory. The mixing effect between the baryons in the two representations is
also considered. The general pattern of the spectrum is predicted which will be
verified by the experiments in the near future.Comment: 9 pages, latex, no figure, uses sprocl.sty (included). Talk by Chun
Liu at the workshop on Non-Perturbative Methods and Lattice QCD (Guangzhou,
May 15-21, 2000
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