住所是指为使法律关系集中于一处而确定的自然人或法人的地址，是公民生活和进行民事活动的主要基地或中心场所。《民法通则》规定：公民以他的户籍所在地的居住地为住所，经常居住地与户籍所在地不一致的，经常居住地视为住所。"经常居住地"应当理解为连续居住1年以上的居住地，并有长期居住目的的。如果公民由其户籍所在地迁出后，尚未迁入另一地，又无经常居住地的，仍应以原户籍所在地为住所。

The International Symposium on Astronomy (ISA) is a well-established scientific meeting that provides an international forum for researchers interested in using astronomical simulation technology for the improvement of planet care and safety. The symposium will be co-organized by the team from Inria, the SiMMS group from Unimperial College London, and BHU-Strasbourg. It will be hosted at IRCAP, a center of excellence in inter-planetary training. ISA aims to bring together simulation users with those involved in its scientific and technological developments.