Impulsive manipulation is the use of impulsive forces to manipulate objects. In particular, we are studying how tomanipulate a rigid planar slider by tapping. In this paper, we focus on the limiting case — where the number of taps approaches infinity as the energy of each tap approaches zero. This paper develops two definitions of the limiting case: for intermittent tapping, where the object co...

Vibratory manipulation is any mode of manipulation involving repeated impacts due to a striker which follows some periodic motion. In this paper, we study vibratory manipulation in the context of tapping planar objects which slide on a fixed support surface. We are interested in the behaviors an object exhibits under such excitation. There are two distinct types of tapping that can result: cont...

Timing variability on a repetitive tapping task was studied in subjects with unilateral cerebellar lesions. During unimanual tapping, within-hand variability was larger when tapping with the ipsilesional hand in comparison to tapping with the contralesional hand. However, variability in the impaired hand was greatly reduced when subjects tapped with two hands together. The improvement in within...

Hand gesture is a new and promising interface for locomotion in virtual environments. While several previous studies have proposed different hand gestures locomotion, little known about their differences terms of performance user preference tasks. In the present paper, we presented three interfaces algorithms which are called Finger Distance gesture, Number Tapping gesture. These were inspired ...

Objectives: This paper describes further improvement and preliminarily evaluation of a novel viscoelastic ankle-foot prosthesis prototype. The objective was to control the ankle hysteresis at slow and normal walking speeds. Methods: Inspired by the ankle biomechanics, in which the hysteresis differs based on the gait speeds, a manually damping control mechanism imbedded in the prosthesis for...

It is nowadays generally accepted that controlling the tapping temperature of steel by immersion pyrometry is an important means of improving steel quality. Broadly speaking, if the steel is too hot when tapped the ingots tend to crack, and if too cool they tend to suffer from “shell” on the surface and non-metallic inclusions beneath. From this point of view it is now simply a question of esta...

Background: Synchronization in music has been a popular experimental basis for studying social interactions, as musicians are required to synchronize to each other’s beats and integrate abstract social information in order to coordinate their actions as part of a non-verbal communication process. A finger-tapping paradigm has been used in studies of sensorimotor synchronization as well as coord...

Synchronization of body movement to an acoustic rhythm is a major form of entrainment, such as occurs in dance. This is exemplified in experimental studies of finger tapping. Entrainment to a beat is contrasted with movement that is internally driven and is therefore self-paced. In order to examine brain areas important for entrainment to an acoustic beat, we meta-analyzed the functional neuroi...

objectives: the purpose of current semi-experimental study was a survey on effect abstract  of 16 week walking on psychosocial functioning related to quality of life among 60 to 75 years old men. methods & materials: for this reason, short form of health-related quality of life questionnaire (sf-36) and geriatric depression scale (gds) had been distributed to the subjects at 2 times of pre-test...