Results 221 to 230 of about 121,712 (266)
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The International Journal of Robotics Research, 2010
This paper introduces a principle to guide the design of finger form: invariance of contact geometry over some continuum of varying shape and/or pose of the grasped object in the plane. Specific applications of this principle include scale-invariant and pose-invariant grasps. Under specific conditions, the principle gives rise to spiral shaped fingers,
Alberto Rodriguez 0003, Matthew T. Mason
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This paper introduces a principle to guide the design of finger form: invariance of contact geometry over some continuum of varying shape and/or pose of the grasped object in the plane. Specific applications of this principle include scale-invariant and pose-invariant grasps. Under specific conditions, the principle gives rise to spiral shaped fingers,
Alberto Rodriguez 0003, Matthew T. Mason
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Knot grasping, folding, and re-grasping
The International Journal of Robotics Research, 2018This paper analyzes the physical resources necessary and sufficient to tie a knot of given structure. We present the first sufficient bound on the number of fingers required to tie a given knot; the bound is linear in the number of crossings appearing in the knot diagram for a given knot. We also present a lower bound on the required number of fingers,
Weifu Wang 0001, Devin J. Balkcom
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Nature Reviews Neuroscience, 2005
People have always been fascinated by the exquisite precision and flexibility of the human hand. When hand meets object, we confront the overlapping worlds of sensorimotor and cognitive functions. We reach for objects, grasp and lift them, manipulate them and use them to act on other objects. This review examines one of these actions--grasping.
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People have always been fascinated by the exquisite precision and flexibility of the human hand. When hand meets object, we confront the overlapping worlds of sensorimotor and cognitive functions. We reach for objects, grasp and lift them, manipulate them and use them to act on other objects. This review examines one of these actions--grasping.
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Experimental Brain Research, 2008
Both theoretical and empirical studies suggest that numerical processing is intimately linked to representations of goal-directed hand actions. Further evidence for this possibility is provided here by the results of two experiments, both of which revealed a powerful influence of numerical magnitude on the selection of hand grasping movements.
MORETTO, GIOVANNA +1 more
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Both theoretical and empirical studies suggest that numerical processing is intimately linked to representations of goal-directed hand actions. Further evidence for this possibility is provided here by the results of two experiments, both of which revealed a powerful influence of numerical magnitude on the selection of hand grasping movements.
MORETTO, GIOVANNA +1 more
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Neurological Research, 2002
In recent years a number of neuroprostheses have been developed and used to assist stroke and spinal cord injured subjects to restore or improve grasping function. These neuroprostheses clearly demonstrated that the targeted group of subjects can significantly benefit from this technology and that functional electrical stimulation (FES) is a viable ...
Milos R, Popovic +2 more
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In recent years a number of neuroprostheses have been developed and used to assist stroke and spinal cord injured subjects to restore or improve grasping function. These neuroprostheses clearly demonstrated that the targeted group of subjects can significantly benefit from this technology and that functional electrical stimulation (FES) is a viable ...
Milos R, Popovic +2 more
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The International Journal of Robotics Research, 1990
A form closure (or complete restraint) of a solid object is a finite set of wrenches (force-moment combinations) applied on the object, with the property that any other wrench acting on the object can be balanced by a positive combination of the original ones.
Xanthippi Markenscoff +2 more
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A form closure (or complete restraint) of a solid object is a finite set of wrenches (force-moment combinations) applied on the object, with the property that any other wrench acting on the object can be balanced by a positive combination of the original ones.
Xanthippi Markenscoff +2 more
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IEEE Pervasive Computing, 2006
New Editor in Chief Roy Want, "grasping the torch" Mahadev Satyanarayanan handed to him, outlines the magazine's mission, offers a taste of things to come, and reveals his resolutions.
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New Editor in Chief Roy Want, "grasping the torch" Mahadev Satyanarayanan handed to him, outlines the magazine's mission, offers a taste of things to come, and reveals his resolutions.
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2009
When hand meets object, we confront the overlapping worlds of sensorimotor and cognitive functions. We reach for objects, grasp and lift them, manipulate them, and use them to act on other objects. Prehension under visual guidance entails two motor processes: ‘reaching’ and ‘grasping.’ Reaching refers to the extension of the arm to touch a distant ...
CASTIELLO, UMBERTO +1 more
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When hand meets object, we confront the overlapping worlds of sensorimotor and cognitive functions. We reach for objects, grasp and lift them, manipulate them, and use them to act on other objects. Prehension under visual guidance entails two motor processes: ‘reaching’ and ‘grasping.’ Reaching refers to the extension of the arm to touch a distant ...
CASTIELLO, UMBERTO +1 more
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Proceedings. 1984 IEEE International Conference on Robotics and Automation, 2005
This paper specifies constraints based on the geometry of the grasped object, on geometry of the hand and the kinematics of the constrained object which determine how to grasp an object.
Ruzena Bajcsy +2 more
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This paper specifies constraints based on the geometry of the grasped object, on geometry of the hand and the kinematics of the constrained object which determine how to grasp an object.
Ruzena Bajcsy +2 more
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Neuropsychologia, 1997
In the present study we attempted to determine the nature of the visual analysis that is performed on an object in order to grasp it. We required eight healthy subjects to reach and grasp a wooden bar which was superimposed over the shaft of the Müller-Lyer illusion. Vision of both the hand and the bar was allowed. Three different bar lengths were used.
DAPRATI E., GENTILUCCI, Maurizio
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In the present study we attempted to determine the nature of the visual analysis that is performed on an object in order to grasp it. We required eight healthy subjects to reach and grasp a wooden bar which was superimposed over the shaft of the Müller-Lyer illusion. Vision of both the hand and the bar was allowed. Three different bar lengths were used.
DAPRATI E., GENTILUCCI, Maurizio
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