Myosins have diverse mechanical properties reflecting a range of cellular roles. A major challenge is to understand the structural basis for generating novel functions from a common motor core. Myosin VI (M6) is specialized for processive motion toward the (-) end of actin filaments. We have used engineered M6 motors to test and refine the "redirected power stroke" model for (-) end directional...

BACKGROUND Articular surfaces reconstruction is essential in total shoulder arthroplasty. Because of the limited glenoid bone support, thin glenoid component could improve anatomical reconstruction, but adverse mechanical effects might appear. METHODS With a numerical musculoskeletal shoulder model, we analysed and compared three values of thickness of a typical all-polyethylene glenoid compo...

The Octopus arm is a highly versatile and complex limb. How the Octopus controls such a hyper-redundant arm (not to mention eight of them!) is as yet unknown. Robotic arms based on the same mechanical principles may render present day robotic arms obsolete. In this paper, we tackle this control problem using an online reinforcement learning algorithm, based on a Bayesian approach to policy eval...

Abstract Individual manipulators are limited by their vertical total load capacity. This places a fundamental limit on the weight of loads that single manipulator can move. Cooperative manipulation with two arms has potential to increase net capacity overall system. However, it is critical proper sharing takes place between arms. In this work, we outline method utilizes mechanical intelligence ...

closed kinematic chains and 1 2 ) as a force constrainad mechanical system working on the samo object simultaneously. based on a feedback linearization and simultaneous output docoupling technique. Applying a nonli ear faodback and a nonlinear coordinate transformation, the complicated model of the multiple robot arms in either formulation is converted into a linear and output decoupled system....

This work presents force control in dual arm planar cooperative space robot for cooperative manipulation by two arms. A docking operation by the two arms of the space manipulator has been carried out. During docking operation, space robot requires mechanical interaction with compliant objects, which encounter force and motion constraints. The gripping force should be such that the object should...

Research and commerce activity has been expanding the potential of micro-task markets. Initially used for simple, disconnected tasks, they have now been able to achieve impressive results in creative domains such as writing and design. The goals for this research are to further explore the possibilities of micro-task markets for performing creative work by defining a set of tasks and processes ...