204 International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Vol XXXV, Part B2. Istanbul 2004 
Zhou, S.G., Zhou, A.Y., Qian, W.N., et al., 2002. Building Web 
3IS | Services in P2P Environment. In: Proceedings of GCC 2002. 
sed Sanya, China. 
/eb 
ore Gnutella: http://gnutella.wego.com/ (accessed 8 Oct.2003)) 
and 
the GML.http://www.w3.org/Mobile/posdep/Presentations/GMLInt 
| of ro (accessed 5 Mar.2003) 
ces 
ing \ Aglets: http://www.trl.ibm.co.jp/aglets. (accessed 20 Sep.2001) 
lan 
ces ) J2sdk 1.4.2: http://wwws.sun.com/ (accessed 10 Sep.2003) 
Geotools: http://sourcefroge.net/project/ (accessed 10 Apr.2002) 
ACKNOWLEDGEMENTS 
and 
The work is supported by Nature Science Foundation under 
grant No. 60373019, and Hi-Tech Research and Development 
Program of China under grant No. 2002AA 135340, and IBM 
Research Award, and Open Researches Fund Program of 
LIESMARS under grant No. SKL(01)0303. 
02. 
ral, 
elf- 
202, 
10 
the 
ng. 
ion 
ery 
Veb 
and 
In: 
In 
rds 
s of 
Ogy 
825