This paper presents a wall-climbing robot which can stably hold and move on the ground-wall surface. The uses propeller reverse thrust as an adsorption force adapt to surface of several media materials. influence robot’s structural parameters its power system is analyzed by comparing single test prototype test. A analysis performed under two specific situations; when he in transition from groun...

The dump, with the compact rock platform and high steep loose slope that is formed during coal mining, most serious area of soil erosion in a surface mine. Ground fissures are typical geological hazard mining areas. However, effect ground on remains unclear. Rainfall experiments were conducted to determine varying characteristics wetting front, runoff sediment production, denudation rate, as we...

land cover map is important for many urban planning and management activities. in this study, in order to produce land cover map of arak city, digital image of liss-iii scanner acquired on 16 june 2006 were employed. first of all, geometric correction with rmse 0.58 pixel was applied. considering the mountainous condition of the study area, topographic correction was applied to the image. in su...

We address performance limits and dynamic behaviors of the two-dimensional passivedynamic bipedal walking mechanisms of Tad McGeer. The results highlight the role of heelstrike in determining the mechanical eÆciency of gait, and point to ways of improving eÆciency. We analyze several kneed and straight-legged walker designs, with round feet and point-feet. We present some necessary conditions o...

[1] We assess the relationship of ground-level fine particulate matter (PM2.5) concentrations for 2000–2001 measured as part of the Canadian National Air Pollution Surveillance (NAPS) network and the U.S. Air Quality System (AQS), versus remotesensed PM2.5 determined from aerosol optical depths (AOD) measured by the Moderate Resolution Imaging Spectroradiometer (MODIS) and the Multiangle Imagin...

The purpose of this study was to determine the effect of cross-slope on gait dynamics. Ten young adult males walked barefoot along an inclinable walkway. Ground reaction forces (GRFs), lower-limb joint kinematics, global pelvis orientation, functional leg-length, and joint reaction moments (JRMs) were measured. Statistical analyses revealed differences across limbs (up-slope [US] and down-slope...