Éric Garcia

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This paper proposes the use of electric field sensors to implement "pretouch" for robotic grasping. Weakly electric fish use this perceptual channel, but it has not received much attention in robotics. This paper describes a series of manipulators each of which incorporates electric field sensors in a different fashion. In each case, the paper presents(More)
OBJECTIVE To characterize the prevalence, incidence, and risk factors for depression before and after cardiac surgery. METHODS Patients awaiting nonemergent surgery (N = 436), completed the Patient Health Questionnaire-9 for depression, as well as the International Physical Activity Questionnaire short version preoperatively (Q1, n = 436) and at hospital(More)
Pretouch sensing is longer range than contact, but shorter range than vision. Our hypothesis is that closed loop feedback based on short range but non-contact measurements can improve the reliability of manipulation. Such feedback may be particularly useful in mobile manipulation and personal robotics: mobility increases the robot’s position uncertainty,(More)
This work presents the two approaches usually chosen in order to obtain quality of service (QoS) in active networks. The first one, we call the "active approach", allows us to define protocols (or services) adapted to flow contents (in particular their semantics) but does not permit us to set priorities to flows. The second one uses QoS provided by the IP(More)
We defined in [ I O ] CAliF (Cooperative Application Framework): a pla&vm f o r cooperative work applications. First, the lower CAliF layers have been developed separat1): the interprocess coniniiiriication layer CAliFCom and the shured nternoy Iajer where the Pilgrini, a new consistency protocol, is implenzented. I n this paper we show the qualities of(More)
Users need to access to shared objects concurrently in CSCW applications. Concurrency management protocols have been designed in order to maintain the consistency. Those protocols are either optimistic or pessimistic, like our own protocol called Pilgrim. This protocol is based on ownership and lock-unlock mechanisms. In order to minimize the delay before(More)