BACKGROUND Dementia and its associated problem behaviors remain bothersome to family and professional caregivers. Exploring characteristics and the underlying meaning of disruptive behaviors in elders with Alzheimer's dementia can be a first step to pursuing patient-centered care. Although hoarding is relatively harmless, unattended excessive hoarding can create health and safety issues for bot...

Skinner's major goal in writing The BehaviorofOrganisms (1938) was to extend the rigor, simplicity, and lawfulness of the study of spinal reflexes (Crozier & Hoagland, 1934; Magnus, 1924; Sherrington, 1906) to the study of purposive behavior. As Skinner (1938) notes, "the older study of spinal reflexes and the modern study of behavior are logically and to a great extent historically continuous"...

Through robotic soccer issue, we focus on “perception” and “situation and behavior” problem among RoboCup physical agent challenges [1]. So far, we have implemented some behaviors for playing soccer by combining four primitve processes (motor control, camera control, vision, and behavior generation processes)[2]. Such behaviors were not sophisticated very much because they were fully implemente...

The purposive approach to computer vision has been much discussed in recent years, but there have been few tests of the viability of the paradigm in a working vision system. We have tested the approach in the context of vision for a mobile robot performing tasks in a typical, unaltered o ce environment. In particular, we examine the approach in the context of a trash collection task; the task t...

We present an approach for building an affine representation of an unknown curved object viewed under orthographic projection from images of its occluding contour. It is based on the observation that the projection of a point on a curved, featureless surface can be computed along a special viewing direction that does not belong to the point’s tangent plane. We show that by circumnavigating the ...