1611 search results - page 230 / 323 » An Access Control Model for Video Database Systems |
POPL
2000
ACM
15 years 1 months ago
2000
ACM
Systems that authenticate a user based on a shared secret (such as a password or PIN) normally allow anyone to query whether the secret is a given value. For example, an ATM machi...
SIGMOD
2003
ACM
15 years 10 months ago
2003
ACM
A major problem in today's information-driven world is that sharing heterogeneous, semantically rich data is incredibly difficult. Piazza is a peer data management system tha...
CCS
2010
ACM
15 years 1 months ago
2010
ACM
In this paper, we propose a new form of image-based CAPTCHA we term "scene tagging". It tests the ability to recognize a relationship between multiple objects in an imag...
CCS
2009
ACM
15 years 10 months ago
2009
ACM
In this paper, we propose a conceptual framework for developing a family of models for Group-Centric information sharing. The traditional approach to information sharing, characte...
HPDC
1999
IEEE
15 years 2 months ago
1999
IEEE
Efficient and robust metacomputing requires the decomposition of complex jobs into tasks that must be scheduled on distributed processing nodes. There are various ways of creating...