Alain C. Houle

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1. We examined mechanisms of coexistence between two congeneric species of frugivorous primates, the blue monkey (Cercopithecus mitis) and the red-tailed monkey (C. ascanius). 2. We used giving-up densities (the amount of food which animals leave in a patch) in fruit trees to measure foraging efficiency and to evaluate possible mechanisms of coexistence.(More)
In the last few years, we saw the emergence of voice-over-IP (VoIP) protocols to enable low-cost telephony services. While VoIP providers are rapidly growing market share against public switched telephone network (PSTN), these technologies are lacking mobile support. We believe that mobile ad hoc networks (MANETs) may offer a good platform for the fast(More)
— Even if both traditional centralized and decentralized models can support small conferences, their deployment for large number of participants is less obvious. In fact, while server-based centralized conference facilitates control and administration operations, supporting centralized media processing in large scale conference causes system overhead on the(More)
Every service outage in an optical telecommunication network causes significant revenue losses to major corporations relying on the network for business activities. Therefore, survivability must be a foremost consideration in the network provisioning to ensure that the network will be able to survive as many failures as possible. The cost of interconnection(More)
Even if both traditional centralized and decentralized models can support small conferences, their deployment for large number of participants is less obvious. In fact, while server-based centralized conference facilitates control and administration operations, supporting centralized media processing in large scale conference causes system overhead on the(More)
Enabling service continuity from one user's device to another one while maintaining communication is a real need to maximize end-user service experience and to benefit from the capacities of each available device in the user environment. This service ubiquity can be realized by session mobility between devices. Many session transfer use-cases can be(More)
MANET networks are transitory, poorly regulated and essentially local in nature. Such environments have need for Information Assurance (IA) services, but the lack of regulation, the limited reach-back connectivity, and the ad hoc nature of the networks make supplying these services difficult. MANET IA services should supply subscriber confidentiality, data(More)
Developing optical network optimization algorithms involves representing many different instances related to the network itself: topology, physical layer equipment found in nodes, links, etc. It also requires description of traffic demand. We propose onML; an XML-based structure to fulfill such requirements. The onML structure is used by ONDE, a development(More)