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mAAN (modern Asian Architecture Network), founder, core-member,
coordinator for
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UNESCO Asia-Pacific Heritage Awards for
Culture Heritage Conservation
(
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ICOMOS (Counseil Internation
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ICOMOS Indonesia, executive member (since 1998)
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UNESCO
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Scientific Committee Alfa-IBIS Network
Research (
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Journal of Southeast Asian Architecture (internationally refereed journal), National
University of Singapore (
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DIMENSI (nationally refereed journal of Architecture),
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ARCASIA – ACAE Architectural Timeline Book Project coordinator (2005)
-
IAI
(The
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LSAI (Institute of the History of Architecture of Indonesia),
founder & executive member (since 1989)
-
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- Friends of Admiral Zhenghe (Singapore), member (since 2003)
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Chinese Heritage Centre (Singapore),
affiliate (since 2001)
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Indonesian Business Centre/Indonesian Arts
& Recreation Centre (
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Alumni KU Leuven Internation