Gabriel Schwanen | Université de Namur (University of Namur) (original) (raw)

Gabriel Schwanen

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Papers by Gabriel Schwanen

Research paper thumbnail of 18th Belgium-Netherlands Conference on Artificial Intelligence

Research paper thumbnail of A Generic Workflow Metamodel to Support Resource-aware Decision Making

When dealing with workflows, either at design-time or run-time, it is very likely to have to take... more When dealing with workflows, either at design-time or run-time, it is very likely to have to take resources into account at some points. Many kinds of requirements on workflows can involve resources: They can constraints the execution of specific tasks, require global optimization, allow some flexibility or not, etc. However, resource is seldom expressed as "first class citizen" in many workflow definition languages. Hence it is difficult to design rich reasoning abilities on top of them and consequently this does not ease the development of powerful resource-aware decision support. In this paper, we propose an enhanced workflow metamodel capturing the resource dimension within both design-time and run-time dimensions. Based on this metamodel, we illustrate some interesting usage scenarios coping with design-time aspects (e.g. potential bottlenecks) and, most importantly, run-time aspects (e.g. strategies from intelligent recovery, degraded mode). The model was elicited an...

Research paper thumbnail of Supporting Business Process Exception Management by Dynamically Building Processes Using the BEM Framework

Research paper thumbnail of FIA criteria estimation for adaptive array antennas in ad hoc networks

Application of adaptive array antenna (AAA) tech nology in ad hoc networks still causes a lot of ... more Application of adaptive array antenna (AAA) tech nology in ad hoc networks still causes a lot of discussion in the network commnnity. Even if AAA is seen as a solution for interference avoidance, wrong implementation of AAA in ad hoc networks can lead to a general deterioration of network performance.

Research paper thumbnail of Rotation of Synchronous Satellites Application to the Galilean Satellites

Celestial Mechanics & Dynamical Astronomy, 2004

An analytical theory of the rotation of a synchronous satellite is developed for the application ... more An analytical theory of the rotation of a synchronous satellite is developed for the application to the rotation of the Galilean satellites. The theory is developed in the framework of Hamiltonian mechanics, using Andoyer variables. Special attention is given to the frequencies of libration as functions of the moments of inertia of the satellite.

Research paper thumbnail of 18th Belgium-Netherlands Conference on Artificial Intelligence

Research paper thumbnail of A Generic Workflow Metamodel to Support Resource-aware Decision Making

When dealing with workflows, either at design-time or run-time, it is very likely to have to take... more When dealing with workflows, either at design-time or run-time, it is very likely to have to take resources into account at some points. Many kinds of requirements on workflows can involve resources: They can constraints the execution of specific tasks, require global optimization, allow some flexibility or not, etc. However, resource is seldom expressed as "first class citizen" in many workflow definition languages. Hence it is difficult to design rich reasoning abilities on top of them and consequently this does not ease the development of powerful resource-aware decision support. In this paper, we propose an enhanced workflow metamodel capturing the resource dimension within both design-time and run-time dimensions. Based on this metamodel, we illustrate some interesting usage scenarios coping with design-time aspects (e.g. potential bottlenecks) and, most importantly, run-time aspects (e.g. strategies from intelligent recovery, degraded mode). The model was elicited an...

Research paper thumbnail of Supporting Business Process Exception Management by Dynamically Building Processes Using the BEM Framework

Research paper thumbnail of FIA criteria estimation for adaptive array antennas in ad hoc networks

Application of adaptive array antenna (AAA) tech nology in ad hoc networks still causes a lot of ... more Application of adaptive array antenna (AAA) tech nology in ad hoc networks still causes a lot of discussion in the network commnnity. Even if AAA is seen as a solution for interference avoidance, wrong implementation of AAA in ad hoc networks can lead to a general deterioration of network performance.

Research paper thumbnail of Rotation of Synchronous Satellites Application to the Galilean Satellites

Celestial Mechanics & Dynamical Astronomy, 2004

An analytical theory of the rotation of a synchronous satellite is developed for the application ... more An analytical theory of the rotation of a synchronous satellite is developed for the application to the rotation of the Galilean satellites. The theory is developed in the framework of Hamiltonian mechanics, using Andoyer variables. Special attention is given to the frequencies of libration as functions of the moments of inertia of the satellite.

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