Guiping Liu

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The Antarctic plateau contains the best sites on earth for many forms of astronomy, but none of the existing bases was selected with astronomy as the primary motivation. In this article, we try to systematically compare the merits of potential observatory sites. We include South Pole, Domes A, C, and F, and also Ridge B (running northeast from Dome A), and(More)
First high-altitude observations of gravity wave (GW)-induced CO 2 density perturbations in the Martian thermosphere retrieved from NASA's Neutral Gas Ion Mass Spectrometer (NGIMS) instrument on board the Mars Atmosphere and Volatile EvolutioN (MAVEN) satellite are presented and interpreted using the extended GW parameterization of Yi ˘ git et al. (2008)(More)
The relationship between increasing women's earnings and rising divorce rates frequently has been explained by the so-called independence effect: If a wife enjoys a higher earning than her husband does, she gains less from marriage. It has also been argued that in a society with egalitarian gender attitudes this effect is less important. In this paper, we(More)
Accurately and effectively measuring the similarity between terms is one way to enhance the performance of information retrieval systems. At present, the extended data source which is used for Mongolian semantic query expansion is still not perfect. A new query expansion method based on Mongolian semantics is proposed for expressing the user's intention(More)
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