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151
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WWW
2005
ACM
16 years 4 months ago
2005
ACM
A fair contract signing protocol allows two potentially mistrusted parities to exchange their commitments (i.e., digital signatures) to an agreed contract over the Internet in a f...
123
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SPAA
2009
ACM
16 years 4 months ago
2009
ACM
Dining philosophers is a classic scheduling problem for local mutual exclusion on arbitrary conflict graphs. We establish necessary conditions to solve wait-free dining under even...
175
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CHI
2003
ACM
16 years 4 months ago
2003
ACM
We describe two games in which online participants collaborated with mobile participants on the city streets. In the first, the players were online and professional performers wer...
124
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GROUP
2009
ACM
15 years 10 months ago
2009
ACM
As organizations scale up, their collective knowledge increases, and the potential for serendipitous collaboration between members grows dramatically. However, finding people wit...
139
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SAC
2005
ACM
15 years 9 months ago
2005
ACM
In traditional access control models like MAC, DAC, and RBAC, authorization decisions are determined according to identities of subjects and objects, which are authenticated by a ...