Omar Alvarez

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This paper presents the performance analysis of topological multicast routing algorithms on mobile wireless ad-hoc networks. Flooding and On-Demand Multicast Routing Protocol (ODMRP) are simulated and compared with Topological Multicast Routing Protocol (ToMuRo) over a pedestrian scenario. The scenario evaluated considers one multicast transmitter and one,(More)
This paper presents a geographic routing algorithm (GERA) for wireless sensor network. We developed and simulated GERA in OPNET and evaluated it in terms of end to end delay and routing load, two of the most important variables concerning dense wireless sensor networks. We employed GERA to simulate volcanic hazards in the area of the Colima Volcano,(More)
HTTP adaptive streaming has become the dominant solution for broadband streaming delivery. Essentially, the server delivers small chunks of content in response to queries from a player, that can alternate between different qualities of content depending on its rendering capabilities and the network condition. In this paper, we highlight that the frequent(More)
Sperm whales are present in the Canary Islands year-round, suggesting that the archipelago is an important area for this species in the North Atlantic. However, the area experiences one of the highest reported rates of sperm whale ship-strike in the world. Here we investigate if the number of sperm whales found in the archipelago can sustain the current(More)
An interface to record analog signals from DC to 20 kHz on the stereo sound channels of video cassette recorders is described. This interface is an effective solution for the implementation of experiments requiring simultaneous recording of electrophysiological analog data, audio and video signals, since all these data are recorded on the same tape. The(More)
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