# Recent Posts

### Can you turn 1,500 R$into 1,000,430 R$ by investing in the stock market?

In the last few weeks we’ve seen a great deal of controversy in Brazil regarding financial investments. Too keep it short, Empiricus, …

### (2/2) Book promotion (paperback edition) - "Processing and Analyzing Financial Data with R"

I received many messages regarding my book promotion (see previous post ). I’ll use this post to answer the most frequent questions: …

### Book promotion - "Processing and Analyzing Financial Data with R"

I recently did a book promotion for my R book in portuguese and it was a big sucess! My english book is now being sold with the same …

### GetDFPData Ver 1.4

I just released a major update to package GetDFPData. Here are the main changes: Naming conventions for caching system are improved so …

### Looking back at 2018 and plans for 2019

At the end of every year I plan to write about the highlight of the current year and set plans for the future. First, let’s talk about …

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# Experience

March 2011 – Present
Porto Alegre

#### UFRGS

Teacher and Researcher
March 2009 – January 2010
London/UK

#### Bank of England

January 2008 – January 2009

#### Teaching Assistant

Assisted lecturer in Finance

# Selected Publications

2019

### Is predatory publishing a real threat? Evidence from a large database study

Using a database of potential, possible, or probable predatory scholarly open-access journals, the objective of this research is to study the penetration of predatory publications in the Brazilian academic system and the profile of authors in a cross-section empirical study. Based on a massive amount of publications from Brazilian researchers of all disciplines during the 2000 to 2015 period, we were able to analyze the extent of predatory publications using an econometric modeling. Descriptive statistics indicate that predatory publications represent a small overall proportion, but grew exponentially in the last 5 years. Departing from prior studies, our analysis shows that experienced researchers with a high number of non-indexed publications and PhD obtained locally are more likely to publish in predatory journals. Further analysis shows that once a journal regarded as predatory is listed in the local ranking system, the Qualis, it starts to receive more publications than non-predatory ones.
Scientometrics, 2018

2018

2018