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ACISP
1998
Springer
13 years 12 months ago
Meta Objects for Access Control: Role-Based Principals
Abstract. Most current object-based distributed systems support access control lists for access control. However, it is difficult to determine which principal information to use fo...
Thomas Riechmann, Jürgen Kleinöder
DATAMINE
2000
113views more  DATAMINE 2000»
13 years 7 months ago
Informix under CONTROL: Online Query Processing
The goal of the CONTROL project at Berkeley is to develop systems for interactive analysis of large data sets. We focus on systems that provide users with iteratively refining answ...
Joseph M. Hellerstein, Ron Avnur, Vijayshankar Ram...
IPMI
1999
Springer
14 years 8 months ago
Continuous Time Dynamic PET Imaging Using List Mode Data
Abstract. We describe a method for computing a continuous time estimate of dynamic changes in tracer density using list mode PET data. The tracer density in each voxel is modeled a...
Thomas E. Nichols, Jinyi Qi, Richard M. Leahy
TMI
2002
113views more  TMI 2002»
13 years 7 months ago
Spatiotemporal reconstruction of list mode PET data
We describe a method for computing a continuous time estimate of tracer density using list-mode positron emission tomography data. The rate function in each voxel is modeled as an ...
Thomas E. Nichols, Jinyi Qi, Evren Asma, Richard M...