Rui Dias
Biographic Data
| ID | 3650154 |
|---|---|
| NAME | Rui Dias |
| GIVEN NAMES | Rui |
| FAMILY NAME | Dias |
| SIGNATURE | DIAS R |
| AFFILIATIONS | Instituto Politecnico de Setubal |
| ORCID | 0000-0002-6138-3098 |
| VERIFIED | Yes |
| TOTAL WORKS | 19 |
| TOTAL CITATIONS | 0 |
| WORKS AS AUTHOR | 19 |
| WORKS AS EDITOR | 0 |
| FIRST PUBLICATION YEAR | 2020 |
| LATEST PUBLICATION YEAR | 2026 |
| H-INDEX | 0 |
RadioActivity
Arts-based interventions create meaningful opportunities for emotional expression, strengthening personal competencies that can enhance prison social climate and support reintegration. This study examined the perceived feasibility and acceptability of RadioACTIVITY, a co-creative arts-based program combining radio theatre production with participatory practices (RadioLAB, RadioSTUDIO, RadioDIFFUSION), implemented across three 10-month editions in…
Middle East Conflict Impact on Cryptocurrencies' Volatility
The main objective of this study is to compare the efficiency levels, in their weak form, between sustainable cryptocurrencies such as Avalanche (AVAX), Cardano (ADA), Solana (SOL), Toncoin (TON) and Ethereum (ETH) (after 'The Merge'), which use efficient mechanisms such as proof-of-stake (PoS), and Binance Coin (BNB), Litecoin (LTC), Monero (XMR), Ripple (XRP), and Bitcoin (BTC) classified as unsustainable cryptocurrencies due to their excessive…
Determinants of Auditor Choice
This research aims to determine the impact of corporate governance, firm complexity, foreign ownership, and ownership concentration towards auditor choice for Sharia commercial banks in Indonesia in 2016-2023. Firm size is also accounted for as a control variable. This research was conducted using a quantitative approach using the logit logistic regression analysis method through the Eviews 13 software. The sampling method was carried out using a…
Analysing Comovements between Dirty and Green Energies
This study analyses the movement patterns between clean energy indices and oil benchmarks such as Brent and WTI from 7 January 2022 to 8 November 2024, intending to verify whether clean energy indices can serve as effective risk diversification instruments. The research focuses on the Nasdaq Clean Edge Green Energy (CELS), S&P Global Clean Energy (SPGTCLEN), Clean Energy Fuels (CLNE) indices and the Invesco Wilderhill Clean Energy (PBW) ETF. The …
Are Precious Metals Hedging Assets for Clean Energy Indices
This study aims to analyse whether precious metals can be hedged assets concerning green energy indices from 8 January 2019 to 6 December 2024. About precious metals, the futures market was analysed: copper (HGH5) and silver (SIH5), the gold spot market (XAU) was also included to provide robustness, and the green indices are S&P Global Clean Energy (SPGTCLEN), NASDAQ Clean Edge Green Energy (CELS), and the iShares Global Clean Energy ETF (ICLN). …
Efficiency of traditional and green cryptocurrencies
The main objective of this research is to evaluate the efficiency, in its weak form, of digital currencies classified as "dirty", such as Bitcoin (BTC) and Ethereum (ETH), and the green ones, namely Lisk (LISK), Metaverse (METAVERSE), Quantum (QTUM), Litecoin (LTC), Augur (REP), Cardano (ADA), Dash (DASH), EOS (EOS), Quantum (QTUM), Litecoin (LTC), Ripple (XRP), Augur (REP), Cardano (ADA), Dash (DASH), EOS (EOS), IOTA (IOTA), Monero (XMR), Neo (N…
Utilizing the real estate investment trusts for portfolio optimisation by application of genetic algorithm
Complex investment decisions require thorough study. Modern portfolio theory provides some broad guidelines on diversification within this framework, focusing on financial instrument categories. A diverse portfolio and favorable economic conditions are the main factors affecting investor returns. The research used the RIETS portfolio and genetic algorithm to improve investment portfolio Sharpe ratios. Since 2008, when the financial crisis increas…
Big Data as An Emerging Paradigm in Organisations' Management
The Big Data Age defines the present era, and the globalisation of business makes it pressing to derive valuable insights from data so that organisations can make sustained decisions. There is no consensus in the literature on how organisations should guide the vast volume of data in value creation or galvanise performance gains. The study aims to address these gaps by reviewing the literature searching WoS using R. Bibliometrix. 4,019 documents …
Delving into the Exchange-Traded Funds (ETFs) Market
Exchange-traded funds (ETFs) are the most popular products in the financial sector today. There is extensive literature on the multifractal analysis of some stock markets, but not about the multifractal behaviour of the ETF market. This study examines the efficiency of stock index ETFs worldwide from an Efficient Market Hypothesis (EMH) perspective, using the ETFs: Ishares Msci World ETF (URTH), Ishares Russell 1000 ETF (IWB), SPDR S&P 500 ETF TR…
Complex and Multifaceted Nature of Cryptocurrency Markets
Decentralised Finance (DeFi) provides a new way to perform complex financial transactions by exploiting blockchain's ability to maintain a decentralised ledger of transactions without being constrained by centralised systems or human intermediaries. DeFi provides alternative financial instruments that might lessen portfolio risk, especially given the erratic state of the financial markets today. This study analyses the association between the yea…
Does Haryana's SHG Participation Help the Quality of Life of Dalit Women? An Approach Based on Composite Index and Treatment Effect
This study aimed to assess the impact of Self Help Groups and their specific interventions, such as vocational training programmes and the use of loans in productive means, on the empowerment of Dalit women of Haryana. A selected control group from OBCs was studied, and it was shown how the livelihood interventions of Self Help Groups bridged the gap between SC (Dalit) and OBC women beneficiaries. The study selected four districts from Haryana wi…
Impact of Hybrid Work Model on Job Satisfaction of Techies during the Covid-19 Pandemic
The rise of hybrid work models, blending remote and onsite work arrangements, has become increasingly prevalent in today's workforce, especially in the IT industry. The research aims to determine the effects of a hybrid-work model on the job satisfaction of tech professionals, focusing on key factors including onsite work, remote work, flexibility, communication, and safety. Using reliability test, CFA and structural analysis, data collected from…
Relating Big Data, Value Creation, Performance and Decision-Making
This study aimed to understand how big data (BD) contributes to value creation in organisations and provides relevant, integrated, and timely information for the performance measurement/assessment model that supports top-management decision-making. The empirical study employs a qualitative methodology comprising five cases using the multiple-case study method. The data collection instrument was semi-structured interviews, and the MAXQDA software …
The Role of Perceived Organisational Support in Predicting Organisational Commitment and Organizational Citizenship Behavior in Professional Organizations
The study examined the "role of perceived organisational support in predicting organisational commitment and organisational citizenship behaviour in professional organisations". The primary data was acquired through a questionnaire from 200 respondents (employees from the finance and technology sectors) via a stratified random sampling technique. Excel and SPSS 26 were utilised for data analysis, and Statistical tools such as Anova, regression an…
Exploring the Relationship between Clean Energy Indices and Oil Prices
This paper aims to assess the comovements between clean energy indices, namely the Clean Energy Fuels (CLNE), Nasdaq Clean Edge Green Energy (CELS), S&P Global Clean Energy (SPGTCLEN), TISDALE Clean Energy (TCEC.CN), Wilderhill (ECO), West Texas Intermediate (WTI) stock indices, over the period from 1 January 2018 to 23 November 2023. We used 10-day windows to analyse the duration and nature of the shocks. Granger causality tests revealed that 20…
Can Renewable Energy Be a Driving Factor for Economic Stability? An In-depth Study of Sector Expansion and Economic Dynamics
India has emerged as one of the world's most appealing locations for renewable energy development. It has set lofty renewable energy goals to reach 450 gigawatts (GW) capacity by 2030. These aims indicate India's determination to move to greener and more sustainable energy sources. India has been investing in R&D to promote technological innovation in renewable energy. This includes improvements to solar photovoltaic technology, wind energy, ener…
Extensão e pesquisa para promoção e sustentabilidade da agricultura familiar no município de Conceição da Feira - Ba
Este artigo descreve, no âmbito da pesquisa e extensão universitária, as ações desenvolvidas na associação rural de moradores e agricultores do Cruzeiro, Tábua, Timbó e Adjacências situada na região de Conceição da Feira, Bahia-Brasil. A proposta de trabalho foi discutir economia, agricultura familiar, formação e capacitação nesta associação. A agricultura familiar desempenha um papel essencial nas pequenas comunidades rurais, colaborando e promo…
Entrepreneurial perceptions of students regarding business professional career
This study seeks to investigate the entrepreneurial perceptions among the students regarding their professional careers analyzing macro, micro and entrepreneurial education factors in Latvia, including the analysis of gender differences. The research is based on the analysis of data collected through a survey. The paper uses statistical analysis involving the measures of descriptive statistics (absolute and relative frequencies, means and respect…
Random walks and market efficiency tests
Research background: Covid-19 has affected the global economy and has had an inevitable impact on capital markets. In the week of February 24?28, 2020, stock markets crashed. The index FTSE 100 decreased 13%, while the indices DJIA and S&P 500 fell 11?12%, the biggest drop since the 2007?2008 financial and economic crisis. It is therefore of interest to test the random walk hypothesis in developed capital markets, European and also non-European, …
No prominent works on this page.
Random walks and market efficiency tests
Research background: Covid-19 has affected the global economy and has had an inevitable impact on capital markets. In the week of February 24?28, 2020, stock markets crashed. The index FTSE 100 decreased 13%, while the indices DJIA and S&P 500 fell 11?12%, the biggest drop since the 2007?2008 financial and economic crisis. It is therefore of interest to test the random walk hypothesis in developed capital markets, European and also non-European, …
Entrepreneurial perceptions of students regarding business professional career
This study seeks to investigate the entrepreneurial perceptions among the students regarding their professional careers analyzing macro, micro and entrepreneurial education factors in Latvia, including the analysis of gender differences. The research is based on the analysis of data collected through a survey. The paper uses statistical analysis involving the measures of descriptive statistics (absolute and relative frequencies, means and respect…
Big Data as An Emerging Paradigm in Organisations' Management
The Big Data Age defines the present era, and the globalisation of business makes it pressing to derive valuable insights from data so that organisations can make sustained decisions. There is no consensus in the literature on how organisations should guide the vast volume of data in value creation or galvanise performance gains. The study aims to address these gaps by reviewing the literature searching WoS using R. Bibliometrix. 4,019 documents …
Delving into the Exchange-Traded Funds (ETFs) Market
Exchange-traded funds (ETFs) are the most popular products in the financial sector today. There is extensive literature on the multifractal analysis of some stock markets, but not about the multifractal behaviour of the ETF market. This study examines the efficiency of stock index ETFs worldwide from an Efficient Market Hypothesis (EMH) perspective, using the ETFs: Ishares Msci World ETF (URTH), Ishares Russell 1000 ETF (IWB), SPDR S&P 500 ETF TR…
Complex and Multifaceted Nature of Cryptocurrency Markets
Decentralised Finance (DeFi) provides a new way to perform complex financial transactions by exploiting blockchain's ability to maintain a decentralised ledger of transactions without being constrained by centralised systems or human intermediaries. DeFi provides alternative financial instruments that might lessen portfolio risk, especially given the erratic state of the financial markets today. This study analyses the association between the yea…
Does Haryana's SHG Participation Help the Quality of Life of Dalit Women? An Approach Based on Composite Index and Treatment Effect
This study aimed to assess the impact of Self Help Groups and their specific interventions, such as vocational training programmes and the use of loans in productive means, on the empowerment of Dalit women of Haryana. A selected control group from OBCs was studied, and it was shown how the livelihood interventions of Self Help Groups bridged the gap between SC (Dalit) and OBC women beneficiaries. The study selected four districts from Haryana wi…
Impact of Hybrid Work Model on Job Satisfaction of Techies during the Covid-19 Pandemic
The rise of hybrid work models, blending remote and onsite work arrangements, has become increasingly prevalent in today's workforce, especially in the IT industry. The research aims to determine the effects of a hybrid-work model on the job satisfaction of tech professionals, focusing on key factors including onsite work, remote work, flexibility, communication, and safety. Using reliability test, CFA and structural analysis, data collected from…
Relating Big Data, Value Creation, Performance and Decision-Making
This study aimed to understand how big data (BD) contributes to value creation in organisations and provides relevant, integrated, and timely information for the performance measurement/assessment model that supports top-management decision-making. The empirical study employs a qualitative methodology comprising five cases using the multiple-case study method. The data collection instrument was semi-structured interviews, and the MAXQDA software …
The Role of Perceived Organisational Support in Predicting Organisational Commitment and Organizational Citizenship Behavior in Professional Organizations
The study examined the "role of perceived organisational support in predicting organisational commitment and organisational citizenship behaviour in professional organisations". The primary data was acquired through a questionnaire from 200 respondents (employees from the finance and technology sectors) via a stratified random sampling technique. Excel and SPSS 26 were utilised for data analysis, and Statistical tools such as Anova, regression an…
Exploring the Relationship between Clean Energy Indices and Oil Prices
This paper aims to assess the comovements between clean energy indices, namely the Clean Energy Fuels (CLNE), Nasdaq Clean Edge Green Energy (CELS), S&P Global Clean Energy (SPGTCLEN), TISDALE Clean Energy (TCEC.CN), Wilderhill (ECO), West Texas Intermediate (WTI) stock indices, over the period from 1 January 2018 to 23 November 2023. We used 10-day windows to analyse the duration and nature of the shocks. Granger causality tests revealed that 20…
Can Renewable Energy Be a Driving Factor for Economic Stability? An In-depth Study of Sector Expansion and Economic Dynamics
India has emerged as one of the world's most appealing locations for renewable energy development. It has set lofty renewable energy goals to reach 450 gigawatts (GW) capacity by 2030. These aims indicate India's determination to move to greener and more sustainable energy sources. India has been investing in R&D to promote technological innovation in renewable energy. This includes improvements to solar photovoltaic technology, wind energy, ener…
Extensão e pesquisa para promoção e sustentabilidade da agricultura familiar no município de Conceição da Feira - Ba
Este artigo descreve, no âmbito da pesquisa e extensão universitária, as ações desenvolvidas na associação rural de moradores e agricultores do Cruzeiro, Tábua, Timbó e Adjacências situada na região de Conceição da Feira, Bahia-Brasil. A proposta de trabalho foi discutir economia, agricultura familiar, formação e capacitação nesta associação. A agricultura familiar desempenha um papel essencial nas pequenas comunidades rurais, colaborando e promo…
Determinants of Auditor Choice
This research aims to determine the impact of corporate governance, firm complexity, foreign ownership, and ownership concentration towards auditor choice for Sharia commercial banks in Indonesia in 2016-2023. Firm size is also accounted for as a control variable. This research was conducted using a quantitative approach using the logit logistic regression analysis method through the Eviews 13 software. The sampling method was carried out using a…
Analysing Comovements between Dirty and Green Energies
This study analyses the movement patterns between clean energy indices and oil benchmarks such as Brent and WTI from 7 January 2022 to 8 November 2024, intending to verify whether clean energy indices can serve as effective risk diversification instruments. The research focuses on the Nasdaq Clean Edge Green Energy (CELS), S&P Global Clean Energy (SPGTCLEN), Clean Energy Fuels (CLNE) indices and the Invesco Wilderhill Clean Energy (PBW) ETF. The …
Are Precious Metals Hedging Assets for Clean Energy Indices
This study aims to analyse whether precious metals can be hedged assets concerning green energy indices from 8 January 2019 to 6 December 2024. About precious metals, the futures market was analysed: copper (HGH5) and silver (SIH5), the gold spot market (XAU) was also included to provide robustness, and the green indices are S&P Global Clean Energy (SPGTCLEN), NASDAQ Clean Edge Green Energy (CELS), and the iShares Global Clean Energy ETF (ICLN). …
Efficiency of traditional and green cryptocurrencies
The main objective of this research is to evaluate the efficiency, in its weak form, of digital currencies classified as "dirty", such as Bitcoin (BTC) and Ethereum (ETH), and the green ones, namely Lisk (LISK), Metaverse (METAVERSE), Quantum (QTUM), Litecoin (LTC), Augur (REP), Cardano (ADA), Dash (DASH), EOS (EOS), Quantum (QTUM), Litecoin (LTC), Ripple (XRP), Augur (REP), Cardano (ADA), Dash (DASH), EOS (EOS), IOTA (IOTA), Monero (XMR), Neo (N…
Utilizing the real estate investment trusts for portfolio optimisation by application of genetic algorithm
Complex investment decisions require thorough study. Modern portfolio theory provides some broad guidelines on diversification within this framework, focusing on financial instrument categories. A diverse portfolio and favorable economic conditions are the main factors affecting investor returns. The research used the RIETS portfolio and genetic algorithm to improve investment portfolio Sharpe ratios. Since 2008, when the financial crisis increas…
RadioActivity
Arts-based interventions create meaningful opportunities for emotional expression, strengthening personal competencies that can enhance prison social climate and support reintegration. This study examined the perceived feasibility and acceptability of RadioACTIVITY, a co-creative arts-based program combining radio theatre production with participatory practices (RadioLAB, RadioSTUDIO, RadioDIFFUSION), implemented across three 10-month editions in…
Middle East Conflict Impact on Cryptocurrencies' Volatility
The main objective of this study is to compare the efficiency levels, in their weak form, between sustainable cryptocurrencies such as Avalanche (AVAX), Cardano (ADA), Solana (SOL), Toncoin (TON) and Ethereum (ETH) (after 'The Merge'), which use efficient mechanisms such as proof-of-stake (PoS), and Binance Coin (BNB), Litecoin (LTC), Monero (XMR), Ripple (XRP), and Bitcoin (BTC) classified as unsustainable cryptocurrencies due to their excessive…
Business (9 works) · Economics (9 works) · Computer Science (7 works) · Market Dynamics and Volatility (6 works) · Geography (5 works) · Energy, Environment, Economic Growth (4 works) · Financial economics (4 works) · Political science (4 works) · Psychology (4 works) · Blockchain Technology Applications and Security (3 works)