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EUROCRYPT
2003
Springer
15 years 12 months ago
CAPTCHA: Using Hard AI Problems for Security
We introduce captcha, an automated test that humans can pass, but current computer programs can’t pass: any program that has high success over a captcha can be used to solve an u...
Luis von Ahn, Manuel Blum, Nicholas J. Hopper, Joh...
DANCE
2002
IEEE
15 years 11 months ago
Towards an Active Network Architecture
Active networks allow their users to inject customized programs into the nodes of the network. An extreme case, in which we are most interested, replaces packets with “capsulesâ...
David L. Tennenhouse, David Wetherall
DANCE
2002
IEEE
15 years 11 months ago
Active Names: Flexible Location and Transport of Wide-Area Resources
In this paper, we explore flexible name resolution as a way of supporting extensibility for wide-area distributed services. Our approach, called Active Names, maps names to a cha...
Amin Vahdat, Michael Dahlin, Thomas E. Anderson, A...
EUROMICRO
2000
IEEE
15 years 11 months ago
Concurrent Control Systems: From Grafcet to VHDL
The Automated Production Systems (APS) are composed of concurrent interacting entities. Then any model should exhibit parallel and sequential behaviours. The Grafcet is now well e...
Frédéric Mallet, Daniel Gaffé...
ECOOP
1999
Springer
15 years 11 months ago
Propagating Class and Method Combination
Abstract. This paper presents a mixin based class and method combination mechanism with block structure propagation. Traditionally, mixins can be composed to form new classes, poss...
Erik Ernst