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Dexterous object manipulation requires suitable control of grip force, load force and digit positions. To keep an object stable in the air, force magnitude, force direction and digit positions should be coordinated, producing compensatory torque that could balance the external torque and maintain a minimal object roll. Six males and 6 females enrolled in the study. In the experiment, subjects were...
The inability to maintain balance during varying postural control conditions can lead to falls, a significant cause of mortality and serious injury among older adults. However, our understanding of the underlying dynamical and stochastic processes in human postural control have not been fully explored. To further our understanding of the underlying dynamical processes, we examine a novel conceptual...
To perform a tool-using task by manipulating some target object, a robot needs to a) determine the desired effects of the task b) determine a suitable tool c) generate the correct position and orientation in which tool should be placed relative to the target object and d) determine the action to subsequently manipulate the tool after it is placed. Thus, learning to use tool requires robot to determine...
In order to evaluate balancing ability in each direction more objectively and analyze the correlations between balance ability and human basic information such as gender, height and weight, the complete dynamics model of balance process under external excitation was simplified as two order linear system reasonably in this study. The evaluation system based on visual stimulation was built to provide...
Due to the increasing number of patients who need orthopedic interventions, current research focuses progressively more on individualized physiotherapy and postoperative treatment. The restoration and therefore unrestricted movement are strongly connected to the accomplishment of physiotherapeutic exercises (form, repetitions and reproducibility of movement). If exercises are performed at home, less...
Collaborative or "social" filtering has been successfully deployed over the years as a technique for analyzing large amounts of user-preference knowledge to predict interesting items for an individual user. The black-box nature of most collaborative filtering (CF) applications leave the user wondering how the system arrived at its recommendation. In this paper we introduce PeerChooser, a...
This study investigates a dual task: 1) visuo-manual tracking of a target moving on an eight-shaped trajectory and 2) compensation of a robot-generated, motion-dependent force field. The target speed is dependent on the tracking error, in such a way that the task difficulty increases as tracking performance improves. The results show that although non trivial this dual-task protocol can be learned...
In 3D computer graphics, it has been an important issue to describe a virtual object realistically and show it in a physically correct manner. Unlike the virtual reality(VR), the augmented reality (AR) is an environment containing virtual and real objects simultaneously. However, the difference in motion between the virtual and real objects is obvious, which makes it hard for AR to be realistic and...
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