Review of The Sociolinguistics of Language

This piece is an introduction and a review of one of Ralph Fasold’s works, the Sociolinguistics of Language. From address forms to pragmatics, Prof. Fasold studied various language phenomena in social communications, including gender and language, discourse analysis, and creolistics. Pidgin and creole language phenomena should be examined in terms of processes instead of types of languages. To apply the theory into daily experiences, we should make efforts in language arts education

Research of the active reflector antenna using laser angle metrology system

Active reflector is one of the key technologies for constructing large telescopes, especially for the millimeter/sub-millimeter radio telescopes. This article introduces a new efficient laser angle metrology system for the active reflector antenna of the large radio telescopes, with a plenty of active reflector experiments mainly about the detecting precisions and the maintaining of the surface shape in real time, on the 65-meter radio telescope prototype constructed by Nanjing Institute of Astronomical Optics and Technology (NIAOT). The test results indicate that the accuracy of the surface shape segmenting and maintaining is up to micron dimension, and the time-response can be of the order of minutes. Therefore, it is proved to be workable for the sub-millimeter radio telescopes.Comment: 10 pages, 15 figure