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We consider heuristics which attempt to maintain a binary search tree in a near optimal form, assuming that elements are requested with fixed, but unknown, independent probabilities. A "move to root" heuristic is shown to yield an expected search time within a constant factor of that of an optimal static binary search tree. On the other hand, a closely(More)
Post Traumatic Stress Disorder (PTSD) is reported to be caused by traumatic events that are outside the range of usual human experiences including (but not limited to) military combat, violent personal assault, being kidnapped or taken hostage and terrorist attacks. Initial data suggests that 1 out of 6 Iraq War veterans are exhibiting symptoms of(More)
Humans are able to robustly maintain balance in the presence of disturbances by combining a variety of control strategies using posture adjustments and limb motions. Such responses can be applied to balance control in two-armed bipedal robots. We present an upper-body control strategy for improving balance in a humanoid robot. Our method improves on(More)
Amblyopia is a visual disorder caused by poorly coordinated binocular input during development. Little is known about the impact of amblyopia on the white matter within the visual system. We studied the properties of six major visual white-matter pathways in a group of adults with amblyopia (n=10) and matched controls (n=10) using diffusion weighted imaging(More)
A major hindrance in the popularization of 3D stereoscopic media is the high rate of motion sickness reported during use of VR technology. While the exact factors underlying this phenomenon are unknown, the dominant framework for explaining general motion sickness (‘‘cue-conflict” theory) predicts that individual differences in sensory system sensitivity(More)
PURPOSE Perception necessarily entails combining separate sensory estimates into a single coherent whole. The perception of three-dimensional (3D) motion, for instance, can rely on two binocular cues: one related to the change in binocular disparity over time (CD) and the other related to interocular velocity differences (IOVD). Although previous work has(More)
Need help defining your goals, identifying strengths or just need a sounding board for new ideas? Are you a seasoned member who can share resources and experience? Come to this session to learn about SIGUCCS? newest membership benefit: a formal mentoring program. Established in fall 2012, this program gives SIGUCCS members the opportunity to define and(More)
Many sources of information impact one’s clinical decision-making (CDM) (e.g. clinical intuition, previous experience, research results). Relatively little is known about the clients’ perspectives of these factors. The current study is an examination of perceptions of the favorability of various CDM influences held by caregivers of children presenting for(More)