Exact definition of basic concepts and terms is of paramount importance to the question of maximal allowable concentrations of toxic substances in industrial atmospheres. The differences existing in various countries are often due to differences in the interpretation of basic concepts. Mutual agreement on the question of basic concepts will facilitate a rapprochement of points of view, and, per...

In this paper, a general formula for nding the Maximum Allowable Dynamic Load (MADL) of geometrically nonlinear exible link manipulators is presented. The dynamic model for links in most mechanisms is often based on the small de ection theory but for applications like lightweight links, high-precision elements or high speed it is necessary to capture the de ection caused by nonlinear terms. Fir...

BACKGROUND It has been shown that residents' ability to see more patients and patients of higher acuity improves with level of training. AIMS No published study has reviewed whether residents become less productive with consecutive shifts. Determining peak resident productivity can optimize staffing to manage patient flow and enhance resident exposure to patients, which is critical to their e...

This paper presents a computational technique for determining the maximum allowable load of wheeled mobile manipulators for a desired trajectory. Full load motion of mobile manipulators while carrying a load is an important consideration in their application and motion planning. The number of factors limits the maximum allowable loads, which can be achieved by a mobile manipulator during a give...

STUDY OBJECTIVE We obtain preliminary information on the neuropsychological performance of house officers at the beginning and end of a shift while they worked consecutive night shifts in the emergency department. METHODS We prospectively studied interns working 12-hour consecutive night shifts in an urban Level I trauma center ED. All consecutive non-emergency medicine interns rotating for 1...