University of Akron

About: University of Akron is a education organization based out in Akron, Ohio, United States. It is known for research contribution in the topics: Polymer & Polymerization. The organization has 17401 authors who have published 29127 publications receiving 702386 citations. The organization is also known as: The University of Akron.

Emotional Labor Dynamics: A Momentary Approach

Abstract: Emotional labor has been described as a dynamic self-regulatory process that unfolds over the course of customer interactions, with employees continuously monitoring and adjusting their felt and ex

Caregiver Burden and Generic Well-Being: Opposite Sides of the Same Coin?.

Abstract: Caregiver burden is one of the most commonly used variables in caregiving research, both as a predictor and as an outcome. It has been suggested that caregiver burden can be measured in terms of discrete dimensions of well-being and that burden and well-being represent opposite sides of the same coin. The goal of this study was to explore this issue further by comparing commonly used dimensions of burden with parallel dimensions of well-being, both as outcome variables and as predictors of other outcomes, in a sample of caregivers. The findings suggest that burden may tap a unique domain of caregiving outcomes that is not represented by more objective indicators of these effects. Dismissing burden as an unnecessary or redundant construct seems premature.

A charge controller for linear operation of a piezoelectric stack actuator

Abstract: This paper examines the position control problem of piezoelectric stack actuators and presents a method for overcoming the hysteresis nonlinearity between the applied voltage and the actuator displacement. An inverting charge control circuit is implemented to linearize the stack actuator movement by taking advantage of the linear relationship between charge and displacement. The charge control feedback loop is analyzed in detail. It incorporates an operational amplifier to provide high loop gain, a high-voltage amplifier (HVA) to drive the stack actuator, and a lead compensator to ensure stability. Experiments were conducted to compare the responses of the stack actuator under voltage and charge control. The experimental data show that the charge control provides linear actuator operation from 1 Hz-10 Hz over approximately 35% of the actuator operating range, and from 1 Hz-20 Hz over approximately 19% of the operating range.