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Security

Digital TV Teleconference

Digital Library

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High Energy

Physics

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E-Commerce

Virtual Reality

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The Regional Internet Registries !

The Internet Assigned Numbers Authority (IANA)!

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Evolution of Information Systems!

# of components to be managed.!

ideal!

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collapse!

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Old habits + Old technology = Predictable Consequences （古い習慣）　　（古い技術）　　　　　（予測可能な結末）

Old habits + New technology = Dramatically Altered Consequences （古い習慣）　　（新しい技術）　　　　（劇的に変わってしまった結末）

!"#$%&'()1 2010/01! 33!

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