Middleware has emerged as an important architectural component in supporting distributed applicat... more Middleware has emerged as an important architectural component in supporting distributed applications. With the expanding role of middleware, however, a number of problems are emerging. Most significantly, it is becoming difficult for a single solution to meet the requirements of a range of application domains. Hence, the paper argues that the next generation of middleware platforms should be both configurable and re-configurable. Furthermore, it is claimed that reflection offers a principled means of achieving these goals. The paper then presents an architecture for reflective middleware based on a multi-model approach. The main emphasis of the paper is on resource management within this architecture (accessible through one of the meta-models). Through a number of worked examples, we demonstrate that the approach can support introspection, and fine-and coarse-grained adaptation of the resource management framework. We also illustrate how we can achieve multi-faceted adaptation, spanning multiple meta-models.
Optical waveguide 3-dB couplers integrated on semicondutors have been studied, designed and fabri... more Optical waveguide 3-dB couplers integrated on semicondutors have been studied, designed and fabricated, using both bulk and diluted multi-quantum-well InGaAsP/InP-based materials, grown by MOCVD. The device structure is based on the two-mode interference (TMI) principle and is fully compatible for integration with the optoelectronic and electronic components of a coherent receiver. Bulk material couplers provide an output balanced within 0.05 dB per nanometer and an excess loss of 1.4 dB, compared to a straight guide, while coupling loss to a tapered-lensed single mode fibre is 4 dB.
GASP is an open source platform that conforms the Open Mobile Alliance (OMA) v 1.0 specifications... more GASP is an open source platform that conforms the Open Mobile Alliance (OMA) v 1.0 specifications. It is able to handle basic services for building and handling interactions between players such as session management, communications... GASP is implemented in Java. It offers a server and a client part. It is defined for MIDP and DOJA J2ME profiles. GASP is demonstrated through Kouiz, a multiplayer game for mobiles presented in the second part of this paper. During solo phases of the game, the player tries to breed animals called kouizs. The aim is to improve their skills. With improved skills, kouizs have better chances to win against challengers in the multiplayer arena. In this mode kouizs can fight. This paper ends by discussing our current results and what we plan to do next with the gaming service platform GASP.
Proceedings of the 2nd French-speaking conference on Mobility and uibquity computing - UbiMob '05, 2005
Ce papier décrit des travaux en cours concernant la réalisation d'une bibliothèque de services po... more Ce papier décrit des travaux en cours concernant la réalisation d'une bibliothèque de services pour des jeux multijoueurs en réseau sur téléphone mobile. Cette bibliothèque, appelée GASP, est conforme aux spécifications v2.0 de l'Open Mobile Alliance (OMA). Elle est programmée en Java et est constituée d'une partie serveur, et d'une partie cliente sur téléphone mobile pour les deux profils J2ME que sont MIDP 2 et DOJA 1.5. GASP v1.0 implante partiellement la spécification OMA : nous travaillons sur une nouvelle version plus complète.
Middleware has emerged as an important architectural component in supporting distributed applicat... more Middleware has emerged as an important architectural component in supporting distributed applications. With the expanding role of middleware, however, a number of problems are emerging. Most significantly, it is becoming difficult for a single solution to meet the requirements of a range of application domains. Hence, the paper argues that the next generation of middleware platforms should be both configurable and re-configurable. Furthermore, it is claimed that reflection offers a principled means of achieving these goals. The paper then presents an architecture for reflective middleware based on a multi-model approach. The main emphasis of the paper is on resource management within this architecture (accessible through one of the meta-models). Through a number of worked examples, we demonstrate that the approach can support introspection, and fine-and coarse-grained adaptation of the resource management framework. We also illustrate how we can achieve multi-faceted adaptation, spanning multiple meta-models.
Optical waveguide 3-dB couplers integrated on semicondutors have been studied, designed and fabri... more Optical waveguide 3-dB couplers integrated on semicondutors have been studied, designed and fabricated, using both bulk and diluted multi-quantum-well InGaAsP/InP-based materials, grown by MOCVD. The device structure is based on the two-mode interference (TMI) principle and is fully compatible for integration with the optoelectronic and electronic components of a coherent receiver. Bulk material couplers provide an output balanced within 0.05 dB per nanometer and an excess loss of 1.4 dB, compared to a straight guide, while coupling loss to a tapered-lensed single mode fibre is 4 dB.
GASP is an open source platform that conforms the Open Mobile Alliance (OMA) v 1.0 specifications... more GASP is an open source platform that conforms the Open Mobile Alliance (OMA) v 1.0 specifications. It is able to handle basic services for building and handling interactions between players such as session management, communications... GASP is implemented in Java. It offers a server and a client part. It is defined for MIDP and DOJA J2ME profiles. GASP is demonstrated through Kouiz, a multiplayer game for mobiles presented in the second part of this paper. During solo phases of the game, the player tries to breed animals called kouizs. The aim is to improve their skills. With improved skills, kouizs have better chances to win against challengers in the multiplayer arena. In this mode kouizs can fight. This paper ends by discussing our current results and what we plan to do next with the gaming service platform GASP.
Proceedings of the 2nd French-speaking conference on Mobility and uibquity computing - UbiMob '05, 2005
Ce papier décrit des travaux en cours concernant la réalisation d'une bibliothèque de services po... more Ce papier décrit des travaux en cours concernant la réalisation d'une bibliothèque de services pour des jeux multijoueurs en réseau sur téléphone mobile. Cette bibliothèque, appelée GASP, est conforme aux spécifications v2.0 de l'Open Mobile Alliance (OMA). Elle est programmée en Java et est constituée d'une partie serveur, et d'une partie cliente sur téléphone mobile pour les deux profils J2ME que sont MIDP 2 et DOJA 1.5. GASP v1.0 implante partiellement la spécification OMA : nous travaillons sur une nouvelle version plus complète.
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Papers by F. Delpiano