There is now increasing evidence that honey bees regulate their ground speed in flight by holding constant the speed at which the image of the environment moves across the eye (optic flow). We have investigated the extent to which ground speed is affected by headwinds. Honey bees were trained to enter a tunnel to forage at a sucrose feeder placed at its far end. Ground speeds in the tunnel were...

Puredata is used to demonstrate a exible and e cient approach to one problem in procedural game audio, that of creating footsteps. A model of ground pressure curves from bipedal movement combined with a synthesis layer and mapping of force to frictional excitement emulates the movement of actors on a surface. The speed and weight of the actor, the material composition of the ground and the work...

2 Abstract In this paper, we proposed a Trajectory Reconstruction Model as an improvement to existing speed-based travel time estimation models. The proposed model utilizes point-based speed data collected by existing Intelligent Transportation Systems (ITS). Using the smoothing scheme proposed in this paper, it is possible to construct a speed surface as a function of space and time. Then, one...

Wind tunnel testing is commonly used to assess and optimize the aerodynamic characteristics of high-speed trains. The train model usually mounted above a static ground plane, but moving necessary for correct representation relative motion between ground. This study focuses on effect applied simulation aerodynamics train. tests using stationary were carried out 1:20 scale train’s first car. Nume...

Human foot motion localization based on Inertial Measurement Unit (IMU) sensor especially in large environments has many potential applications such as search and rescue in fire or in emergency, navigation for visitor and security purposes, etc. However, current existing algorithms are so far from practical applications. Because they usually apply a fixed threshold for human gait phase detectio...

The static pcsztion error of a service wing-tip leading edge pressure head installation has been measured on a Meteor VII by means of a tralliw static head, developed espccs.sUy for use at high speeds. These tests ccver an alts.tude range f'romsero to 38,000 ft, and u3clud.e measurements Ln 'g' turns. The maxmumldach number reached was 0.84. For comparative purposes the static error was also me...

The perfect site for astronomical interferometry would be one where the wind speeds throughout the atmosphere were very low, there was little atmospheric turbulence (especially at high altitudes), the seismic activity was negligible and the climate very stable. Perhaps surprisingly, these conditions describe the Antarctic plateau perfectly. At Dome C, for example, the average wind speed at grou...

We present a feedforward control for spring-legged systems in uneven terrain which keeps the running speed constant. The control uses the unique transformation between ground level and flight time to automatically adapt the system parameters during flight to the actual ground level without having to detect it. We further demonstrate how this control for constant speed running can simultaneously...