The National Air and Space Museum,Washington, D.C.

Abstract

Space technology is not only one of the major subjects of this spacious and gracious new Museum on Washington's Mall, it also contributed greatly to its record construction programme and it opening ceremony. Above all its designers hope that 85 complex audio-visual exhibits will perform faultlessly thanks to MACS, the Museum Automatic Control System. This central computer control unit, complete with its space-age back-up system, constantly monitors the performance of all moving exhibits, whether puppets, films or slides. Any fault is detected instantly and thus can be repaired quickly.     

卫匡国《中国新图志》经纬度数据的来源

卫匡国的《中国新图志》是在欧洲刊行的第一部中国分省地图集,书中包含1750余条目的中国城市、聚落经纬度详表在地图史上也是首创.本文经过长时段的分析,探明数据来源问题,复原卫匡国的制图方法,并对前人研究中的误解做出辨析.卫匡国仅做过个别纬度实测,从未做过经度实测.为使图集尽快出版,他沿用欧洲制图家旧图示设定中国的总体经度...