Quan Pham

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In a federated system, it is not uncommon for a user profile registered to a particular system to contain enough attributes to request services from that system. Other attributes may be missing from that profile when services are requested from another system. The problem is that currently, when a change in user attributes happens, it is very difficult for(More)
Although aging is typically associated with a decline in maximal oxygen consumption (VO2max), young and old subjects, of similar initial muscle metabolic capacity, increased quadriceps VO2max equally when this small muscle mass was trained in isolation. As it is unclear if this preserved exercise-induced plasticity with age is still evident with centrally(More)
LIMITED DISTRIBUTION NOTICE: The research presented in this report may be submitted as a whole or in parts for publication and will probably be copyrighted if accepted for publication. It has been issued as a Technical Report for early dissemination of its contents. In view of the transfer of copyright to the outside publisher, its distribution outside of(More)
Computational reproducibility depends on the ability to not only isolate necessary and sufficient computational artifacts but also to preserve those artifacts for later re-execution. Both isolation and preservation present challenges in large part due to the complexity of existing software and systems as well as the implicit dependencies, resource(More)
Delegation is a powerful mechanism to provide flexible and dynamic access control decisions. Delegation is particularly useful in federated environments where multiple systems, with their own security autonomy, are connected under one common federation. Although many delegation schemes have been studied, current models do not seriously take into account the(More)