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SCL
2008
66views more  SCL 2008»
15 years 1 months ago
Practical encoders for controlling nonlinear systems under communication constraints
We introduce a new class of dynamic encoders for continuous-time nonlinear control systems which update their parameters only at discrete times. We prove that the information reco...
Claudio De Persis, Dragan Nesic
VLDB
1987
ACM
72views Database» more  VLDB 1987»
15 years 4 months ago
Providing Time-Related Constraints for Conventional Database Systems
A model for a historical database is described which is based upon time-stamped tuples as the unit of storage. The model includes both physical and logical time-stamps. The techni...
T. Abbod, K. Brown, H. Noble
ER
2007
Springer
100views Database» more  ER 2007»
15 years 7 months ago
On Languages for the Specification of Integrity Constraints in Spatial Conceptual Models
This paper intends to classify, review, and compare the existing languages for the specification of spatial integrity constraints at the conceptual level. We classify these languag...
Mehrdad Salehi, Yvan Bédard, Mir Abolfazl M...
ICRA
2009
IEEE
178views Robotics» more  ICRA 2009»
14 years 11 months ago
A riemannian-geometry approach for dynamics and control of object manipulation under constraints
A Riemannian-geometry approach for control and stabilization of dynamics of object manipulation under holonomic or non-holonomic (but Pfaffian) constraints is presented. First, pos...
Suguru Arimoto, Morio Yoshida, Masahiro Sekimoto, ...
AIMSA
2008
Springer
15 years 7 months ago
A Logical Approach to Dynamic Role-Based Access Control
Since its formalization RBAC has become the yardstick for the evaluation of access control formalisms. In order to meet organizational needs, it has been extended along several di...
Philippe Balbiani, Yannick Chevalier, Marwa El Hou...