A5054017553- Market Dynamics and Volatility
- Complex Systems and Time Series Analysis
- Conservation, Biodiversity, and Resource Management
- Economic and Technological Innovation
- Complex Network Analysis Techniques
- Agriculture, Land Use, Rural Development
- Financial Risk and Volatility Modeling
- Rural Development and Agriculture
- Open Source Software Innovations
- Software Engineering Techniques and Practices
- Agricultural and Food Sciences
- Big Data and Business Intelligence
- Economic Theory and Policy
- Construction Project Management and Performance
- Blockchain Technology Applications and Security
- Fire effects on ecosystems
- Environmental Impact and Sustainability
- Hydropower, Displacement, Environmental Impact
- COVID-19 Pandemic Impacts
- Regional resilience and development
- Agriculture Sustainability and Environmental Impact
- Ecosystem dynamics and resilience
- Organic Food and Agriculture
- Energy, Environment, Economic Growth
- Stock Market Forecasting Methods
Instituto Federal do Maranhão
2015-2024
Serviço Nacional de Aprendizagem Industrial
2018-2022
University of Évora
2020
Polytechnic Institute of Portalegre
2020
The rapid development of cryptocurrencies has drawn attention to this particular market, with investors trying understand its behaviour and researchers explain it. evolution cryptocurrencies’ prices showed a kind bubble crash at the end 2017. Based on event, fact that Bitcoin is most recognized cryptocurrency, we propose evaluate contagion effect between other major cryptocurrencies. Using Detrended Cross-Correlation Analysis correlation coefficient (ΔρDCCA) comparing period after before...
One of the greatest threats to Brazilian Amazon is reconstruction and paving formerly abandoned Highway BR-319, which would link one most conserved blocks in forest “arc deforestation” on southern edge region where has already been destroyed. BR-319 its planned side roads allow actors processes from arc deforestation move into vast areas unprotected rainforest. In specific case this highway, a judicial decision that not subject further appeal established environmental studies for first...
This paper uses time varying graphs to evaluate the Brazilian production structures, assessing relationship across economic sectors overtime given important macroeconomic shocks in country. We use annual input-output matrices from World Input–Output Database for period 1995–2011. Our results show possible positive impacts of policies and higher commodity prices on increased network connectivity between 2002 2003, negative influence 2008 crisis resulting decreased connectivity,...
Non-fungible tokens (NFTs) are a type of digital record ownership used in unique way: ensuring authenticity and uniqueness. Due to these characteristics, NFTs have been several markets: games, arts, sports, among others. In 2020, the volume negotiations was about USD 200 million. Despite strong interest economic agents operating with NFTs, there still gaps literature, regarding their dynamics price interrelation other potentially related assets, which deserve be studied. this sense, main...
Terrestrial biomes in South America are likely to experience a persistent increase environmental temperature, possibly combined with moisture reduction due climate change. In addition, natural fire ignition sources, such as lightning, can become more frequent under change scenarios since favourable conditions occur often. this sense, changes the frequency and magnitude of fires impose novel stressors on different ecosystems according their adaptation fires. By focusing Brazilian biomes, we...
This paper aims to deepen the discussion about productive interdependence and regional resilience among Brazilian states regions through an input-output network analysis identify emergent patterns or properties within states. We use inter-regional IO matrix, base year 2011, for 27 68 sectors. The main results show that some remain isolated in structure. Moreover, even with spatial heterogeneity presented economy, their is situated at a level enables recovery without important links.
In this work, we evaluated the evolution of some atmospheric pollutants (O3, NOx and PM10) over time their relationship with four different climate variables (solar irradiation, air temperature, relative humidity wind speed). To end, assessed long-range dependence those concentrations a Detrended Fluctuation Analysis (DFA) analyzed cross-correlation such through Cross-Correlation Coefficient (ρDCCA). The results show that pollution tends to increase time, impairing quality likely affecting...
The severity of the ongoing COVID-19 outbreak demand from countries to adopt extreme measurements social isolation stop spread and flatten curve contamination. Although measures may have negative impacts on economy, historically it has been showed be more effective in saving lives less damaging economy than not adopting these during a viral pandemic. In Brazil, despite positioning president against due consequent economic recession, rapid virus worried governors Brazilian states, which are...
Abstract This paper aims to analyse the connectivity of 13 stock markets, between 1998 and 2019, with a time-varying proposal, evaluate evolution linkage these markets over time. To do so, we propose use network built based on correlation coefficients from Detrended Cross-Correlation Analysis, using sliding windows approach. Besides allowing for analysis time, our approach also enables us verify how behaves different time scales, which enriches analysis. We two properties networks: global...
The Amazon contains the most significant number of known species on planet, where fruits with peculiar characteristics can be found. bacuri (Platonia insignis) is a native fruit this region and has gained prominence over years. A data survey was conducted to understand production chain system its economic potential. results show that popularity led an increase in consumer demand price In addition, mapping shows needs well-defined structure. Its current organization consists activities...
This paper aims to analyze the effects of Covid-19 on financial markets from perspective Complexity. The pandemic has caused turmoil in and is already one most important crises history, causing a fall several stock as well great volatility. Unlike past crises, which cases were either by problems fiscal deficits or system, this crisis its origin an epidemic disease, occurred Wuhan, China, quickly spread across globe affecting transport networks, commerce finance, will affect public debt many...