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This paper discusses similarities between models of adaptive motor control suggested by recent experiments with human and animal subjects, and the structure of a new control law derived mathematically from nonlinear stability theory. In both models, the control actions required to track a specified trajectory are adaptively assembled from a large collection(More)
Cervical lymphadenopathy is a common presentation of nasopharyngeal carcinoma (NPC). It can be present in the classical location of the level II or VI lymph nodes or at any other levels of the lymph nodes in the neck. NPC should be suspected when a patient presents with cervical lymphadenopathy and conductive hearing loss. A thorough endoscopic assessment(More)
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