This article considers certain dimensions of the quality employment in Brazil, particularly rural zones. It starts from perception changes production relations and repercussions these have on practices. A panel data methodology is applied to capture determinants job quality, a index proposed. Rural more precarious than its urban counterpart, although differences been diminishing over time. In a...

This work considers two linear operators which yield wave modes that are classified as neutrally stable, yet have responses grow or decay in time. Previously, King et al. (2016) and Huber (2020) examined the one-dimensional (1D) propagation governed by these operators. Here, we extend to spatial dimensions (2D) examine resulting solutions. We find increase of dimension leads long-time behaviour...

The STD experiments in Guatemala from 1946-1948 have earned a place of infamy in the history of medical ethics. But if the Guatemala STD experiments were so "ethically impossible," how did the U.S. government approve their funding? Although much of the literature has targeted the failings of Dr. John Cutler, we focus on the institutional context and research ethos that shaped the outcome of the...

Systematic, well-designed research provides the most effective approach to the solution of many problems facing highway administrators and engineers. Often, highway problems are of local interest and can best be studied by highway departments individually or in cooperation with their state universities and others. However, the accelerating growth of highway transportation develops increasingly ...