The central purpose of this inquiry is to analyze the fallacy of wrenching from context. Logic textbooks and other accounts briefly explain this manipulative technique as a linguistic distortion of the other party’s thesis. It is a fallacy in which there are two or more parties engaged in argumentation and one has interpreted or represented the position of another in an improper way that has fa...

PLANAR CABLE-DIRECT-DRIVEN ROBOTS: DESIGN FOR WRENCH EXERTION Robert L. Williams II Department of Mechanical Engineering Ohio University Athens, Ohio Paolo Gallina Dipartimento di Innovazione Meccanica e Gestionale University of Padova Padova, Italy Journal of Intelligent and Robotic Systems Vol. 35, pp. 203-219 2002

Increasing the amount of physical activity has been observed to ameliorate the progression of Alzheimer's disease (AD), as well as enhance neurogenesis. Choi et al. in this issue of Neuron report that the expression of Presenilin 1 (PS1) variants, responsible for the early onset of familial AD, are capable of mitigating the regenerative effects associated with increased activity and environment...

The successful execution of any contact task fundamentally requires the application of wrenches (forces and moments) consistent with the task. We develop an algorithm for computing the entire set of wrenches consistent with achieving a given augmented contact mode (e.g., sliding at contact 1, rolling at contact 2, and approaching potential contact 3) for one fixed and one moving part in the plane.

In the interest of providing more effective evaluations of impact wrench vibration exposures and the development of improved methods for measuring vibration emissions produced by these tools, this study focused on three variables: acceleration measured at the tool surface, vibration exposure duration per test trial, and the amount of torque required to unseat the nuts following a test trial. Fo...

This article proposes a nonlinear model predictive control (NMPC) strategy for the position tracking of cable-driven parallel robots (CDPRs). The NMPC formulation handles explicitly cable tensions and their limits. Accordingly, tension distribution is performed as an integral part feedback strategy, which notably allows CDPR to operate on wrench-feasible workspace boundaries without failure. In...