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SIGUCCS
2000
ACM
14 years 2 months ago
Approaches to Computer Lab Management: Lockdown vs. Freedom
Basic approaches to computer lab management range along a spectrum from total lockdown of lab computers to total freedom. Total lockdown, which can be implemented with system perm...
Christopher Jones, Yasemin Tunc, Deborah Cherry
ER
1995
Springer
152views Database» more  ER 1995»
14 years 2 months ago
A Logic Framework for a Semantics of Object-Oriented Data Modeling
We describe a (meta) formalism for defining a variety of (object oriented) data models in a unified framework based on a variation of first-order logic. As specific example we use...
Olga De Troyer, Robert Meersman
POPL
1995
ACM
14 years 2 months ago
Total Correctness by Local Improvement in Program Transformation
The goal of program transformation is to improve efficiency while preserving meaning. One of the best known transformation techniques is Burstall and Darlington’s unfold-fold me...
David Sands
SDB
1995
178views Database» more  SDB 1995»
14 years 2 months ago
A Semantics-based Approach to Design of Query Languages for Partial Information
Most of work on partial information in databases asks which operations of standard languages, like relational algebra, can still be performed correctly in the presence of nulls. In...
Leonid Libkin
ISTCS
1992
Springer
14 years 2 months ago
Concurrent Timestamping Made Simple
Concurrent Time-stamp Systems (ctss) allow processes to temporally order concurrent events in an asynchronous shared memorysystem, a powerful tool for concurrency control, serving...
Rainer Gawlick, Nancy A. Lynch, Nir Shavit