OBJECTIVES/HYPOTHESIS To improve the test standards for a version of the Romberg test and to determine whether measuring kinematic variables improved its utility for screening. STUDY DESIGN Healthy controls and patients with benign paroxysmal positional vertigo, postoperative acoustic neuroma resection, and chronic peripheral unilateral weakness were compared. METHODS Subjects wore Bluetoot...

In this paper, the concepts of connectivity, degrees of control, and redundancy are revisited from a pure topological viewpoint and then applied to robotics. The redundancy matrix is defined to provide designers with a useful support in the first conceptual phase of the project of a new manipulator. An algorithm for building the connectivity and the redundancy matrices for a large class of mani...

When all the inputs of a parallel manipulator (PM) are locked, the manipulator is usually turned into a structure. When an uncertainty singularity occurs for a PM, the latter structure is unstable or, in other words, it may undergo infinitesimal or finite motion. Hence, the investigation of the uncertainty singularities of a PM can be reduced to the instability analysis of its corresponding str...

A novel dimensional synthesis technique for solving the mixed exact and approximate motion synthesis problem for planar RR kinematic chains is presented. The methodology uses an analytic representation of the planar RR dyad’s rigid body constraint equation in combination with an algebraic geometry formulation of the exact synthesis for three prescribed positions to yield designs that exactly re...

Recently, fast and practical inverse kinematics (IK) methods for complicated human models have gained considerable interest owing to the spread of convenient motion-capture or human-augmentation technologies. Although IK algorithms developed in robotics can also be applied humans, they experience computational speed issues, especially real-time applications. This paper presents a new algorithm ...

Abstract During the operation of each machine, deformation and stress state its supporting structure is directly related to load. The load intensity ranges from minimum maximum value a function nominal force, torque, kinematic-dynamic values moving executive assemblies during machine process. deformations also shape type structure. However, although reliable, which refers integrity, production ...

With progressing technologies and new features of production, new products compete with older ones in markets. Indeed, new products initiate contest with olden ones and this process repeats in different productions lifetime several times. In this situation recycling the olden products seems to be significant for supply chains. Governments often levy special tariffs for these products as a contr...