Most Cited Articles Published in Brazilian Journals of Economics: Google Scholar Rankings

This paper examines the rankings of the most cited papers published in Brazilian journals of economics since 1990, according to Google Scholar [GS]. Quality research published in Brazil, as measured by academic impact, is mainly done by authors affiliated with international institutions. Half of the articles are co-authored, 7% are authored by graduate students, and women appear to be underrepresented. There is little overlap between authors publishing in domestic journals and authors publishing in international journals. The areas of research more frequently cited by GS and domestic journals are macroeconomics, labor economics, and industrial organization. The most cited articles in international journals are of econometrics, game theory, and development economics. Revista de Economia Política is the top Brazilian journal for the general public, and Revista de Econometria is the top Brazilian journal for academia. GS citations are not a good indicator of journal citationsRankings of Articles, Economists and Departments, Role of Economists.

The Tenure Game: Building Up Academic Habits

Why do some academics continue to be productive after receiving tenure? This paper answers this question by using a Stackelberg differential game between departments and scholars. We show that departments can set tenure rules and standards as incentives for scholars to accumulate academic habits. As a result, academic habits have a lasting positive impact in scholar’s productivity, leading to higher scholar’s productivity rate of growth and higher productivity level.Role of economists; sociology of economics.

Conflict, Political Structure and Economic Growth in Dual-Population Lands

The optimal consumption growth rate for a group in a strictly political federation in a dual-population land is lower than that under partition if the group is wealthier and has a lower population growth rate than its counterpart. Even in such circumstances the group may economically benefit from joining a federation that facilitates technological transfer as long as the group’s initial technology is inferior to the hybrid. The group’s optimal consumption growth rate during a civil war is larger than those under partition and a strictly political federation if its rival’s warfare is mainly aimed at inflicting casualties.conflict, political structure, economic growth

Asset Returns Under Model Uncertainty: Eveidence from the euro area, the U.K and the U.S

The goal of thes paper is to analyze predictability of future asset returns in the context of model uncertainty. Using data for the euro area, the US and the U.K., we show that one can improve the forecasts of stock returns using a Bayesian Model Averaging (BMA) approach, and there is a large amount of model uncertainty. The empirical evidence for the euro area suggests that several macroeconomic, financial and macro-financial variables are consistently among the most prominent determinants of risk premium. As for the U.S, only a few number of predictors play an important role. In the case of the UK, future stock returns are better forecasted by financial variables. These results are corroborated for both the M-open and the M-closed perspectives and in the context of "in-sample" and "out-of-sample" forescating. Finally, we highlight that the predictive ability of the BMA framework is stronger at longer periods, and clearly outperforms the constant expected returns and the autoregressive benchmark models.stock returns, model uncertainty, Bayesian Model Averaging

Retrospective comparative study of bone loss in implants with and without immediate loading in the Egas Moniz university clinic

To evaluate bone loss after three years in implants placed at the implantology consult at the Egas Moniz University Clinic, relating bone loss to the type of loading (conventional or immediate load). A comparative and retrospective study, performed on a sample of 65 implants, placed in 24 of 327 patients, who attended the implantology consult at the Egas Moniz University Clinic in 2015, representing 7.3% of the study population through the measurement of distance between implant platform and bone using radiographs. Three years after implant placement with and without immediate loading there is statistically significant bone loss mesially and distally. It was found that when compared bone loss in loaded vs unloaded mesially and distally implants, there were no statistically significant differences. The bone loss of the unloaded implants was compared three years after being placed, with the bone level of the loaded implants also three years later. No significant difference was found. Although no statistically significant differences were found between bone loss in loaded implants vs unloaded mesially and distally, as it is supported by the literature, it was possible to conclude that there was, in fact, a statistically significant bone loss, mesially and distally, three years after implant placement with and without immediate loading. This may be due to poor oral hygiene, a history of periodontitis, smoking and peri-implantitis.info:eu-repo/semantics/publishedVersio

Depression and Substance Abuse: A Rationalization of a Vicious Circle

While a mind-altering-substance consumption alleviates current level of depression, it facilitates future depression. Our analysis incorporates this trade off and shows that the stationary state of a consistently overly ambitious sophisticated substance user is improved by impatience, and that this improvement is amplified by the ratio of the instantaneous depression-relief effect to the state-degradation effect of the substance. The analysis also shows that the existence of a supportive personal community leads to permanent cyclical substance consumption when the user is relatively patient.Substance abuse, ambition, consistency, sophistication, impatience, state-maturation, state-degradation, depression, relief, community support, cycles

The Ease of Doing Business Index as a tool for Investment location decisions

The Ease of Doing Business Index (EDBI) uses 41 variables to compare the business environment of different countries. It is widely used by policy makers, researchers and multinational companies. This paper aims to assess EDBI’s consistency and validity in representing the business environment by using factor analysis. It is found that the EDBI presents a limited consistency and descriptive power of a country’s business environment. The consequence of these findings is that multinational firms should handle carefully the EDBI in their investment decisions.Location Decisions, Factor Analysis, Cross-Border Investments, Institutional Environment