Rotational Constraint between Beams in 3-D Space

Human-Robot Cooperative Handling Using Virtual Nonholonomic Constraint in 3-D space

This paper deals with human-robot cooperative handling of a long object in 3-D space. We assume that the operator and the robot grasp each end of the object and carry it cooperatively. In this task, it is difficult for the human operator to apply a large torque to give a translational force at the robot hand. Thus, we propose to assign a virtual nonholonomic constraint to the robot hand. In thi...

Linear Weingarten Rotational Surfaces in Pseudo-Galilean 3-Space

In the present paper, we study rotational surfaces in the three dimensional pseudo-Galilean space G3. Also, we classify linear Weingarten rotational surfaces in G3. A linear Weingarten surface is the surface having a linear equation between the Gaussian curvature and the mean curvature of a surface. In last section, we construct isotropic rotational surfaces in G3 with prescribed mean curvature...

3 D spectral synthesis and rotational line broadening ( Research Note )

Context. Spectral synthesis calculations based on three-dimensional stellar atmosphere models are limited by the affordable angular resolution of the radiation field. This hampers an accurate treatment of rotational line broadening. Aims. We aim to find a treatment of rotational broadening of a spherical star when the radiation field is only available at a modest number of limb-angles. Methods....

Propagation of 3-d Beams Using a Finite- Difference Algorithm

Attentional control within 3-D space.

Four experiments investigated whether directing attention to a particular plane in depth enables observers to filter out information from another depth plane. Observers viewed stereoscopic displays and searched for a red line segment among green line segments. The results showed that directing attention to a particular depth plane cannot prevent attentional capture from another depth plane when...