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Pushing is a motion primitive useful to handle objects that are too large, too heavy, or too cluttered to be grasped. It is at the core of much of robotic manipulation, in particular when physical interaction is involved. It seems reasonable then to wish for robots to understand how pushed objects move.
One critical issue, for a wireless sensor network (WSN) to operate successfully, is to provide sufficient sensing coverage. Define the smart sensing environment as a sensing system with the capability to sense the environment and respond properly in an automated manner. In this paper, we target on smart sensing environments and deal with heterogeneous sensors (here sensor heterogeneity is defined...
For the wireless sensor network (WSN) to operate successfully, a critical issue is to provide sufficient sensing coverage. In this paper, we target on smart environments and deal with both the homogeneous (having identical sensing radius) and heterogeneous sensors (having different sensing ranges) equipped with locomotion facilities to assist in the sensor self-deployment. An enhanced virtual forces...
This paper describes a robotic walker, Johnnie, that provides assistance to mobility-challenged people, especially elderly people. Our walker is modified from a conventional unpowered four-wheel walker by equipping motors, sensors and some safety devices, providing mobility and stability to it. In our software system, we provide two modes: (1) autonomous mode in which the walker can autonomously navigate...
In present study, the effect of red blood cells concentration on the clot viscoelastic properties was assessed by acoustic radiation force technique in vitro. The experiments were performed on porcine whole blood with different hematocrits from 0 to 40%. Clot formation was induced by adding 2 ml of 0.5 M CaCl2 solution into a 20-ml blood sample. The viscoelastic properties of clot were estimated by...
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