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	Provedor de dados ArchiMer (2) BJMBR (1) Autor Cox, Samantha (2) Guinet, Christophe (2) Blevin, Pierre (1) Charrassin, Jean-benoît (1) Heerah, Karine (1) Mijovic,B. (1) Orgeret, Florian (1) Popovic,D.B. (1) Popovic,M.B. (1) Weimerskirch, Henri (1) Mais... Palavra-chave Accelerometers (3) Diving behavior (2) Artificial neural network (1) Biologging (1) Control (1) Early-life (1) First-year juveniles (1) Foraging (1) Foraging behavior (1) Functional electrical stimulation (1) Movement ecology (1) Neural prosthesis (1) Ontogeny (1) Satellite relay tags (1) Satellite relayed data logger (1) Sea-ice (1) Southern elephant seals (1) Synergy (1) Mais... Tipo do documento Text (2) Info:eu-repo/semantics/article (1) Ano 2019 (2) 2008 (1) País France (2) Brazil (1) Idioma Inglês (3)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 3 Primeira ... 1 ... Última Synergistic control of forearm based on accelerometer data and artificial neural networks BJMBR Mijovic,B.; Popovic,M.B.; Popovic,D.B.. In the present study, we modeled a reaching task as a two-link mechanism. The upper arm and forearm motion trajectories during vertical arm movements were estimated from the measured angular accelerations with dual-axis accelerometers. A data set of reaching synergies from able-bodied individuals was used to train a radial basis function artificial neural network with upper arm/forearm tangential angular accelerations. The trained radial basis function artificial neural network for the specific movements predicted forearm motion from new upper arm trajectories with high correlation (mean, 0.9149-0.941). For all other movements, prediction was low (range, 0.0316-0.8302). Results suggest that the proposed algorithm is successful in generalization over... Tipo: Info:eu-repo/semantics/article Palavras-chave: Synergy; Accelerometers; Artificial neural network; Control; Neural prosthesis; Functional electrical stimulation. Ano: 2008 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2008000500007 Body condition influences ontogeny of foraging behavior in juvenile southern elephant seals ArchiMer Orgeret, Florian; Cox, Samantha; Weimerskirch, Henri; Guinet, Christophe. Ontogeny of diving and foraging behavior in marine top predators is poorly understood despite its importance in population recruitment. This lack of knowledge is partly due to the difficulties of monitoring juveniles in the wild, which is linked to high mortality early in life. Pinnipeds are good models for studying the development of foraging behaviors because juveniles are large enough to robustly carry tracking devices for many months. Moreover, parental assistance is absent after a juvenile departs for its first foraging trip, minimizing confounding effects of parental input on the development of foraging skills. In this study, we tracked 20 newly weaned juvenile southern elephant seals from Kerguelen Islands for up to 338 days during their first trip... Tipo: Text Palavras-chave: Accelerometers; Diving behavior; Early-life; First-year juveniles; Foraging behavior; Ontogeny; Satellite relay tags; Southern elephant seals. Ano: 2019 URL: https://archimer.ifremer.fr/doc/00482/59380/62484.pdf Validation of Dive Foraging Indices Using Archived and Transmitted Acceleration Data: The Case of the Weddell Seal ArchiMer Heerah, Karine; Cox, Samantha; Blevin, Pierre; Guinet, Christophe; Charrassin, Jean-benoît. Dive data collected from archival and satellite tags can provide valuable information on foraging activity via the characterization of movement patterns (e.g., wiggles, hunting time). However, a lack of validation limits interpretation of what these metrics truly represent in terms of behavior and how predators interact with prey. Head-mounted accelerometers have proven to be effective for detecting prey catch attempt (PrCA) behaviors, and thus can provide a more direct measure of foraging activity. However, device retrieval is typically required to access the high-resolution data they record, restricting use to animals returning to predictable locations. In this study, we present and validate data obtained from newly developed satellite-relay data tags,... Tipo: Text Palavras-chave: Satellite relayed data logger; Accelerometers; Diving behavior; Movement ecology; Foraging; Sea-ice; Biologging. Ano: 2019 URL: https://archimer.ifremer.fr/doc/00595/70687/68895.pdf Registros recuperados: 3 Primeira ... 1 ... Última

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