task graph scheduling is a multi-objective optimization and np-hard problem. in this paper a new algorithm on homogeneous multiprocessors systems is proposed. basically, scheduling algorithms are targeted to balance the two parameters of time and energy consumption. these two parameters are up to a certain limit in contrast with each other and improvement of one causes reduction in the other on...

BACKGROUND The rapid aging of the workforce has motivated the development of studies that seek to maintain good health conditions, work ability, autonomy and the social integration of workers. OBJECTIVES To present the theoretical framework, available measurements and models for promoting work ability. DISCUSSION In the field of rehabilitation, the sedimentation of the conceptual model of t...

This paper analyzes the degree to which flextime reduces fertility-related career interruptions. In particular, I ask whether women with flextime return to work sooner and remain employed when they have young children. I quantify the resulting reduction in the earnings penalty from periods of non-employment due to child-care responsibilities. To answer this question, I develop a structural dyna...