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course, these maps provide click and link. 
3. DISCUSSIONS 
Our activity is thus practical but not at all model-making or 
theoretical. Applied technology will plug up holes in modern 
technology, and both will make progress. Collaboration 
between distant fields of science will provide fresh viewpoints 
for both fields. 
Our trial created a big sensation when we held an open seminar 
to introduce it to the public at the end of the three-year first 
phase. It elicited both negative and positive opinions. We 
understand that some of negative views are based on 
academically and nationalistically sensitive considerations, and 
we should not ignore these negative opinions. At the same time, 
the support and understanding of some forward-looking 
scientists has encouraged us to extend our activities. Two of us 
from the fields of social archaeology strongly recognized the 
efficiency of developing the spatial information system and its 
influence in academic and educational activities. 
Our project is now in the second phase, and we are seeking a 
sustainable way of collaboration, since long-term, continuous 
collaboration is a key to establishing a unique information 
system, which we hope will gradually gain wider acceptance by 
the public. 
REFERENCES 
Nagata, Y., 1996. Changes in Rural Areas of Northeast 
Thailand in the Latter Half of the 1980s as Seen through the 
Northeast Thailand Village Information System. International 
Archives of Photogrammetry and Remote Sensing, 31(B7), pp. 
516-521. 
Nagata, Y., Songsiri, W., Vallibhotama, S., 2002. Development 
of the EcoNETVIS, a Time-series Spatial Information System, 
on Northeast Thailand. /PSJ Symposium Series, 2002(13), pp. 
225-232. 
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EcoNETVIS Site Descriptions 
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Figure 9. Distribution of sites including the keyword “moat”