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Associated Press
COMMERCIAL IMAGE - In this photograph released by Association for Computing Machinery on Monday, June 18, 2012, Moshe Vardi, far left, editor-in-chief of Communications of the ACM and Director of the Ken Kennedy Institute for Information Technology at Rice University, moderates a panel on how the Turing computational model shaped computer science during the ACM  Turing Centenary Celebration in San Francisco. (Ryan Anson/AP Images for Association for Computing Machinery)

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