Excessive flexion and internal rotation of the hip is a common gait abnormality among individuals with cerebral palsy. The purpose of this study was to examine the influence of hip flexion on the rotational moment arms of the hip muscles. We hypothesized that flexion of the hip would increase internal rotation moment arms and decrease external rotation moment arms of the primary hip rotators. T...

3D rotation invariants based on orthogonal Gaussian–Hermite moments are proposed in this paper. We present an elegant and easy theoretical derivation of them. At the same time we prove by experiments that the Gaussian–Hermite invariants have better numerical stability than the traditional invariants composed of geometric moments. © 2014 Elsevier B.V. All rights reserved. d a w s i i d r [ t m i...

The connections are used to transfer forces and moments due applied loading. capability of the connection in resisting moment is classify types steelwork particularly for cold-formed steel. Classification schemes based on total moment-rotation behavior have been developed aid design analysis connections. Moment-rotation curve commonly describe that can be obtained from either theoretical or exp...

In steel structures, unstiffened top and seat angle connections (TSACs) show semi-rigid behavior transfer both the vertical reaction some end moment of beam while also making degree rotation. The moment–rotation TSACs has been evaluated using experimental numerical analyses under monotonic loading generally compared in linear elastic region. this paper, three-dimensional (3-D) finite element mo...

The purpose of this investigation was to assess the effects of stance width and foot rotation angle on three-dimensional knee joint moments during bodyweight squat performance. Twenty-eight participants performed 8 repetitions in 4 conditions differing in stance or foot rotation positions. Knee joint moment waveforms were subjected to principal component analysis. Results indicated that increas...

It has been hypothesised that those with medial compartment knee osteoarthritis tend to externally rotate their foot during gait in order to unload the diseased compartment. This has been found to decrease the adduction moment at the knee during late stance, although the effects of foot rotation on shear forces at the knee have not yet been determined. Also, the effects of internal foot rotatio...