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MMMACNS
2001
Springer
15 years 11 months ago
Analyzing Separation of Duties in Petri Net Workflows
Abstract. With the rise of global networks like the Internet the importance of workflow systems is growing. However, security questions in such environments often only address secu...
Konstantin Knorr, Harald Weidner
SPW
2001
Springer
15 years 11 months ago
On the Negotiation of Access Control Policies
Although the notion of negotiation has been used extensively in secure communication protocols to establish common keying states, protocol modes and services, this notion is only n...
Virgil D. Gligor, Himanshu Khurana, Radostina K. K...
160
Voted
ICMCS
2000
IEEE
99views Multimedia» more  ICMCS 2000»
15 years 11 months ago
Automatic Selection of Visemes for Image-Based Visual Speech Synthesis
An image-based approach provides an efficient way for visual speech synthesis. In an image-based visual speech synthesis system, a few lip images, namely visemes, are used for ge...
Jie Yang, Jing Xiao, Max Ritter
CHI
1999
ACM
15 years 11 months ago
Chat Circles
Although current online chat environments provide new opportunities for communication, they are quite constrained in their ability to convey many important pieces of social inform...
Fernanda B. Viégas, Judith S. Donath
DEXAW
1999
IEEE
98views Database» more  DEXAW 1999»
15 years 11 months ago
QoS Aware Distributed Query Processing
In the environment of wide-area networks such as the Internet, distributed query processing becomes problematic due to the changing coming from both underlying networks and user&#...
Haiwei Ye, Brigitte Kerhervé, Gregor von Bo...