An analysis of arm movements involving forward projection of the hand in order to reach for and grasp a target at different orientations is presented. The reaching movements required shoulder flexion, elbow extension, and wrist pronation or supination. The relation between elbow and shoulder instantaneous angular position proved to be consistent from trial to trial of each task, independent of ...

Consider n i .i .d . random lines in the plane defined by their slope and distance from the origin . The slope is uniformly distributed on (0, 27r] and independent of the distance R from the origin . These lines define a set I of n(n 1)/2 intersection points . It was recently shown by Atallah and Ching and Lee that the cardinality of the convex hull of these intersection points is 0(n), and the...

Total shoulder replacement is a successful procedure for degenerative or some inflammatory diseases of the shoulder. However, fixation of the glenoid seems to be the main weakness with a high rate of loosening. The results using all-polyethylene components have been better than those using metal-backed components. We describe our experience with 35 consecutive total shoulder replacements using ...

The convex–concave rule is considered an important theory during treatment decision-making (Kirby et al., 2007). According to this rule (Fig. 1) the therapist moves a bone with a convex joint surface opposite to the direction of restricted movement of the distal aspect of the bone (e.g. the head of humerus inferiorly for restricted shoulder abduction). However, a concave joint surface is mobili...

Bobbin tool friction stir welding (BTFSW) is a variant of the FSW process which uses special two-shoulder that forms top and bottom weld surface. As such, significant simplification setup achieved. One dominant parameters BTFSW interference between shoulder pinch gap metal thickness. In this research, influence square pin with convex shoulders on temperature, microstructure, tensile, impact, be...

in this paper we introduce a sequential block iterative method and its simultaneous version with op-timal combination of weights (instead of convex combination) for solving convex feasibility problems.when the intersection of the given family of convex sets is nonempty, it is shown that any sequencegenerated by the given algorithms converges to a feasible point. additionally for linear feasibil...

We consider a Cournot oligopoly model where multiple suppliers (oligopolists) compete by choosing quantities. We compare the social welfare achieved at a Cournot equilibrium to the maximum possible, for the case where the inverse market demand function is convex. We establish a lower bound on the efficiency of Cournot equilibria in terms of a scalar parameter derived from the inverse demand fun...

A random polytope, Kn, is the convex hull of n points chosen randomly, independently, and uniformly from a convex body K^R. It is shown here that, with high probability, Kn can be obtained by taking the convex hull of m = o(n) points chosen independently and uniformly from a small neighbourhood of the boundary of K. §