This paper introduces the concept of common deterministic shifts (CDS). This concept is simple, intuitive and relates to the common structure of shifts or policy interventions. We propose a Reduced Rank technique to ...

Endogeneity is often present in discrete choice models, precluding the consistent estimation of the model parameters. To correct for this problem, the researcher needs to gather exogenous instrumental variables, which ...

Endogeneity is often present in discrete choice models, precluding the consistent estimation of the model parameters. To correct for this problem, the researcher needs to gather exogenous instrumental variables, which ...

Endogeneity is often present in discrete choice models, precluding the consistent estimation of the model parameters. To correct for this problem, the researcher needs to gather exogenous instrumental variables, which ...

This paper presents necessary and su cient conditions for tests to have trivial power. By inverting these impractical tests, we demonstrate that the bounded con dence regions have error probability equal to one. This theo- ...

Introduction: Respiratory Distress Syndrome (RDS) in newborns (NB) is caused by alveolar surfactant deficiency, which makes gas exchange in the lungs difficult, leading to respiratory distress (RD). The stable microbubble ...

The pulmonary surfactant has essential physical properties for normal lung function. The most important property is the surface tension. In this work, it was evaluated the surface tension of two commercial exogenous ...

A aviação civil sofreu diversos choques exógenos através dos anos, tendo as crises econômicas e sanitárias um grande reflexo nos números do setor. Em 2020, a pandemia do COVID-19 provocou a maior retração já vista por essa ...