In the educational context it is examined the teacher-stress association. The teacher’s stress is related with variables of academic environment, of out of the school and of the teacher. The impact of that association can be see in the teacher’s health, in his achievement and in the quality of the teaching-learning process. With the objective to present one view of how issue is being considered...

This paper claims that technical progress induces early retirement of older workers. It presents a model where human capital is technology specific, so that technical progress erodes some existing human capital. This affects mostly older workers, who have a smaller incentive to learn the new technology, since their career horizon is shorter. Hence, their labor supply declines. We find strong su...

physiologists have shown that increased fluids improve skeletal muscle performance in prolonged exercise.typical orders provide for 125 ml of intravenous fluids per hour in patients taking limited oral fluids during labor. our purpose in this study was to determine whether increased intravenous fluids affect the progress of labor. in a prospective randomized institutional clinical trial, one-hu...

In this paper, we describe an aspect of collaboration—emergent division of labor—wherein people interactively and contingently organize, maintain, and reorganize the division of labor. The emergent division of labor involves the following characteristics: (1) Emergence of division of labor, (2) Maintenance of division of labor, and (3) Reorganization of division of labor. The authors have claim...

In this paper, I argue that the two theoretical prerequisites of balanced growth purely labor augmenting technical progress and a unitary capital-labor elasticity are inconsistent with long-run evidence from a simple decomposition of the post-war U.S. economy into heterogeneous industries. My decomposition is motivated by empirical evidence that the degree of substitution between capital and la...