We examined how stream/bounce event perception is affected by motion correspondence based on the surface features of moving objects passing behind an occlusion. In the stream/bounce display two identical objects moving across each other in a two-dimensional display can be perceived as either streaming through or bouncing off each other at coincidence. Here, surface features such as colour (Expe...

Abstract A description is given of recent progress in the understanding mechanisms fluid-body interactions where motion a body and surrounding fluid affect each other substantially. The mathematical modelling such unsteady for internal channel external near-wall flows two spatial dimensions time. emphasis throughout on analytical developments with accompanying reduced computation. successive as...

This work proposes a control law for a manipulator with the aim of realizing desired time-varying motion-force profiles in the presence of a stiff environment. In many cases, the interaction with the environment affects only one degree of freedom of the end-effector of the manipulator. Therefore, the focus is on this contact degree of freedom, and a switching positionforce controller is propose...

ontrol of cooperating multiple robots has been studied extensively in the past decade [ 11-[ 121. The special feature of multi-arm systems compared to single-arm systems is that closed kinematic loops exist which present a challenge for both motion control C and internal force control. On the other hand, single-arm constrained robots also require motion control and constraint force control. How...

The non-autonomous bouncing ball system consists of a point mass m in a constant gravitational field g, which bounces inelastically on a flat vibrating table. The presented Lyapunov-like method is set up for non-autonomous measure differential inclusions and constructs a decreasing step function W above the oscillating Lyapunov function V . Furthermore, it is proven that the attractivity of the...

Many physical systems can be modelled relatively simply and accurately by a ball bouncing off a surface; hence, the dynamics of this system have been studied by mathematicians and physicists for several decades. If the surface that the ball is rebounding from is fixed, the problem is simple, and can be analyzed as a damped harmonic oscillator. However, if the surface itself is vibrating, very c...

Jumping on trampolines is a popular backyard recreation. In some trampoline games (e.g., "seat drop war"), when two people land on the trampoline with only a small time-lag, one person bounces much higher than the other, as if energy has been transferred from one to the other. First, we illustrate this energy-transfer in a table-top demonstration, consisting of two balls dropped onto a mini-tra...

We examined whether elephants shift to using bouncing (i.e. running) mechanics at any speed. To do this, we measured the three-dimensional centre of mass (CM) motions and torso rotations of African and Asian elephants using a novel multisensor method. Hundreds of continuous stride cycles were recorded in the field. African and Asian elephants moved very similarly. Near the mechanically and meta...

In a grid-less Electron Cyclotron Resonance (ECR) plasma thruster with diverging magnetic nozzle, the magnitude of ambipolar field accelerating positive ions depends perpendicular energy gained by electrons. This work investigates heating electrons electromagnetic waves, taking their bouncing motion into account in confining well formed mirror force and electrostatic potential thruster. An Part...

We study models of mobile robots with limited capabilities that are deployed either on a cycle or an infinite line or on a segment. Robots start moving at the same time and when two robots collide their speeds and movement directions are instantaneously updated. Each of them has a collision detector and a clock to measure the times of its collisions. They do not have any knowledge on the total ...