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By conditional gene ablation in mice, we found that beta-catenin, an essential downstream effector of canonical Wnt signaling, is a key regulator of formation of the apical ectodermal ridge (AER) and of the dorsal-ventral axis of the limbs. By generation o ...
A comparative study on the two different kinds of ultrasonic linear motors (ULM), standing and travelling wave types, is described. Analytical modeling using the wave theory and the contact mechanisms is presented. The former is used to describe the wave p ...
The paper describes the "electronic" stiffening of the actuators developed for the articulated boom of JET. Experimental trials on a two joints Boom have confirmed the improvements of speed and reliability that can be achieved. Based on these developments, ...
The paper proposes virtual input devices based on collision detection for easy construction of interactive 3D graphics applications which use a motion capture system as a real time input device. Each virtual input device is composed from several collision ...
Electromagnetic levitated and guided system are commonly used in the field of high speed vehicles, tool machines, frictionless bearings and conveyor systems. This paper compares various control strategies for the position control of the electromagnetic lev ...
A new type of microrobot is described. Its simple and compact design is believed to be of promise in the microrobotics field. Stepping motion allows speeds up to 4mm/s. Resolution smaller than 10 nm is achievable. Experiments in an open- loop motion demons ...
We extend the range of inverse kinematics by integrating mass distribution information to embody the position control of the center of gravity of any articulated figure in single support (open tree structure). The underlying control architecture of main an ...
An original electrical AC loss experimental set-up is presented. For loss comparison purpose, Ic and exponent n are measured with a DC magnetic field between 2 and 400 mT applied perpendicularly to the axis of the sample using a specially designed electrom ...
We extend a recent approach for the position control of the center of mass for any tree structured articulated figure in a multiple support context. Our approach fits into existing high level interfaces of behavioral control of human figures; it brings the ...
