This thesis addresses several issues in modelling interaction with human hands in computer graphics and animation. Modifying motion capture to satisfy the constraints of new animation is difficult when contact is involved because physical interaction involves energy or power transfer between the system of interest and the environment, and is a critical problem for computer animation of hands. A...

Hydroplaning is a unique phenomenon in which the water on a wet runway or highway is not displaced from the nominal tire-ground contact area by a rolling tire or by a moving but nonrotating (full-skidding) tire at a rate fast enough to allow the tire to make contact with the ground surface over its complete nominal footprint area, as would the case of operation on a dry surface. When hydroplani...

Abstract This paper analyzes adjective positioning in French through the lens of language contact. Though some adjectives are nearly always either before their noun (pre-nominal) or after (post-nominal), others – usually that depict a positive negative value can be found position without any detectable semantic change. Our aim is to investigate possible influence English on these by using corpu...

A ne-motion planning technique is described for assemblies with narrow insertion clearances. A ne-motion planner receives as input a nominal assembly motion plan, computed from kinematic constraints alone. As described in a companion paper [4], the planner constructs an adjacency graph for each local contact space surrounding a problematic con guration in the nominal trajectory. A heuristic sea...

Beam-gas nuclear and Coulomb interactions introduce limitations on the tolerable vacuum pressure in the LHC and its upgrade. We discuss local pressure limits set by the heat load on the cryogenics system and by loss-induced quenches, as well as average pressure limits imposed by beam-lifetime degradation and emittance blow up. These pressure limits depend on the molecular species in the residua...

A theoretical study is presented of the consequences of accidental contact between conductors at different voltage levels. This study was done to complement previous experimental and simulation work [1] and confirmed the previous findings that the distribution transformer holds down the voltage at the point of contact to a value below the nominal lower voltage level. Two cases are examined (a) ...

I have developed a theory of contact mechanics between randomly rough surfaces. The solids are assumed to deform elastically when the stress sigma is below the yield stress sigma(Y), and plastically when sigma reaches sigma(Y). I study the dependence of the (apparent) area of contact on the magnification. I show that in most cases the area of real contact A is proportional to the load. If the r...

The results of experiments on the estimation error methods experimental and calculated determination contour area for ecological assessment a mobile energy device are presented. There was used example modern radial tires 360/70R24 Bel-89 18.4R34 F-11 agricultural tractor MTZ-1025.2. in modes non-nominal loading at nominal load changes tire pressure within range recommended field work. assess po...