Whereas much work has been done to describe N -dimensional orientations in terms of principal rotations, these developments have not been extended to the descriptions of N -dimensional kinematics. For threedimensional rotations the angular velocity can be related to derivatives of the principal angle and axis. Following a similar procedure this paper develops the kinematics for N -dimensional r...

Abstract Variation laws of earth pressure accounting for the displacement are taining wall can be well described by mathmatical fitting in study relationship between and retaining displacement. The common mathematical function expressions divided into sinusoidal model, exponential like hyperbolic semi-numerical semi-analytical model function, etc. characteristics shortcomings current expression...

BACKGROUND Hip dislocation in children with cerebral palsy (CP) is a common and severe problem. The dislocation can be avoided, by screening and preventive treatment of children with hips at risk. The aim of this study was to analyse the characteristics of children with CP who develop hip displacement, in order to optimise a hip surveillance programme. METHODS In a total population of childre...

braced frames structures have a good lateral stiffness against earthquakes. however, energy loss of their members is slight and strong forces are given to the structures. moment frames have a more flexible function against earthquakes and also have a better flexibility than braced frames. however, since its lateral stiffness is low, too much displacement of the structure results in an increase ...

The goal of this study was to identify and model the three-dimensional (3-D) geometric transformations required for accurate saccades to distant visual targets from arbitrary initial eye positions. In abstract 2-D models, target displacement in space, retinal error (RE), and saccade vectors are trivially interchangeable. However, in real 3-D space, RE is a nontrivial function of objective targe...

Beams supported by elastic foundations are one of the complex soil-structure interaction problems that have been studied using "beam on foundation" concept. To support loads, structural foundation and soil continuum must work together. The development more accurate model simpler procedure critical for safety cost-effective construction such type structure. Three nodded beams based Timoshenko be...