Niobium is a highly strategic mineral, in which Brazil holds almost all of the world's reserves followed by Canada. Niobium has an important role in steel alloys for the aerospace industry and future potential for the industry's superconductors. The present paper investigates the prevailing...

The paper aims to investigate the labour market participation of couples in Brazil in 2013. The observed endogenous variables portraying participation are assumed to be the outcome of a static discrete game between the partners. Different solution concepts are considered (Nash, Stackelberg and...

The paper undertakes a dynamic analysis for service quality in the electricity distribution in Brazil between 2010 and 2014 based on Malmquist indexes constructed upon Data Envelopment Analysis (DEA) distance functions. The motivation for the less usual consideration of efficiency frontiers for...

The paper investigates the effect of police presence on homicides at the municipality level in Brazil during the January 2010 to December 2014 period. For this purpose, occasional and illegal police strikes are considered as relevant shocks in a quasi-natural experiment. After controlling for...