Edwin Rojas
Biographic Data
| ID | 1405389 |
|---|---|
| NAME | Edwin Rojas |
| GIVEN NAMES | Edwin |
| FAMILY NAME | Rojas |
| SIGNATURE | ROJAS E |
| AFFILIATIONS | Vice‐Minister for Sustainable Development at the Ministry of Energy and Mines, Guatemala |
| ORCID | 0000-0001-9578-9064 |
| VERIFIED | Yes |
| TOTAL WORKS | 6 |
| TOTAL CITATIONS | 1 |
| AUTHOR COUNT | 6 |
| EDITOR COUNT | 0 |
| FIRST PUBLICATION YEAR | 2014 |
| LATEST PUBLICATION YEAR | 2026 |
| H-INDEX | 1 |
A conceptual framework for mineral supply chain traceability
A holistic and integrated conceptual framework is proposed to enhance traceability in mineral supply chains. • Governance and compliance mechanisms are identified as pivotal components of effective traceability systems. • Social impact, supply chain operations, performance evaluation, and technology contribute to improved traceability. • The framework promotes ethical sourcing and sustainable practices across the mineral supply chain. Companies t…
The Impact of Sibling Relationships on Behavioral and Sexual Health among Latino Sexual Minority Men
Pre-exposure prophylaxis (PrEP) is a highly effective method for preventing HIV acquisition and plays a crucial role in the Ending the HIV Epidemic in the US initiative. However, there are various barriers that hinder the access and uptake of PrEP among Latino sexual minority men (SMM) at individual, interpersonal, and cultural levels. While the significance of cultural factors in designing and implementing HIV prevention programs for Latino popu…
Role of Ape1 in Impaired DNA Repair Capacity in Battery Recycling Plant Workers Exposed to Lead
Exposure to lead in environmental and occupational settings continues to be a serious public health problem. At environmentally relevant doses, two mechanisms may underlie lead exposition-induced genotoxicity, disruption of the redox balance and an interference with DNA repair systems. The aim of the study was to evaluate the ability of lead exposition to induce impaired function of Ape1 and its impact on DNA repair capacity of workers chronicall…
Emergency drills for agricultural drought response
Drills are an important element of disaster management, helping to increase preparedness and reduce the risk of real‐time failure. Yet, they are not applied systematically to slow‐onset disasters such as a drought, which causes damage that is not instantly apparent and thus does not solicit immediate action. This case study evaluates how drills inform institutional responses to slow‐onset disasters. It spotlights Guatemala, a country where drough…
Relación precio-volumen mediante análisis de causalidad y efecto día de semana en los mercados accionarios latinoamericanos
This paper examines the relationship between daily returns and trading volumes using the Granger causality test and, additionally, the day-of-the-week effect in the main Latin American stock markets for the period 1998-2014. It analyzes stock indexes from Argentina, Brazil, Chile, Colombia, Mexico and Peru. This study utilizes heteroskedastic variance models and vector autoregression (VAR). Results indicate the presence of a strong day-of-the-wee…
Anomalías de calendario en los mercados accionarios latinoamericanos
This article builds upon and corrects traditional calendar anomalies in the main Latin American stock markets for the period between 1991 and 2013. It analyzes stock indexes from Argentina, Brazil, Chile, Colombia, Mexico and Peru. For the study, we use econometric models for the analysis of heteroscedastic variance supplemented with significance tests, including the Bonferroni correction. Results indicate mixed evidence of these anomalies; but, …
The Impact of Sibling Relationships on Behavioral and Sexual Health among Latino Sexual Minority Men
Pre-exposure prophylaxis (PrEP) is a highly effective method for preventing HIV acquisition and plays a crucial role in the Ending the HIV Epidemic in the US initiative. However, there are various barriers that hinder the access and uptake of PrEP among Latino sexual minority men (SMM) at individual, interpersonal, and cultural levels. While the significance of cultural factors in designing and implementing HIV prevention programs for Latino popu…
Anomalías de calendario en los mercados accionarios latinoamericanos
This article builds upon and corrects traditional calendar anomalies in the main Latin American stock markets for the period between 1991 and 2013. It analyzes stock indexes from Argentina, Brazil, Chile, Colombia, Mexico and Peru. For the study, we use econometric models for the analysis of heteroscedastic variance supplemented with significance tests, including the Bonferroni correction. Results indicate mixed evidence of these anomalies; but, …
Relación precio-volumen mediante análisis de causalidad y efecto día de semana en los mercados accionarios latinoamericanos
This paper examines the relationship between daily returns and trading volumes using the Granger causality test and, additionally, the day-of-the-week effect in the main Latin American stock markets for the period 1998-2014. It analyzes stock indexes from Argentina, Brazil, Chile, Colombia, Mexico and Peru. This study utilizes heteroskedastic variance models and vector autoregression (VAR). Results indicate the presence of a strong day-of-the-wee…
Emergency drills for agricultural drought response
Drills are an important element of disaster management, helping to increase preparedness and reduce the risk of real‐time failure. Yet, they are not applied systematically to slow‐onset disasters such as a drought, which causes damage that is not instantly apparent and thus does not solicit immediate action. This case study evaluates how drills inform institutional responses to slow‐onset disasters. It spotlights Guatemala, a country where drough…
Role of Ape1 in Impaired DNA Repair Capacity in Battery Recycling Plant Workers Exposed to Lead
Exposure to lead in environmental and occupational settings continues to be a serious public health problem. At environmentally relevant doses, two mechanisms may underlie lead exposition-induced genotoxicity, disruption of the redox balance and an interference with DNA repair systems. The aim of the study was to evaluate the ability of lead exposition to induce impaired function of Ape1 and its impact on DNA repair capacity of workers chronicall…
The Impact of Sibling Relationships on Behavioral and Sexual Health among Latino Sexual Minority Men
Pre-exposure prophylaxis (PrEP) is a highly effective method for preventing HIV acquisition and plays a crucial role in the Ending the HIV Epidemic in the US initiative. However, there are various barriers that hinder the access and uptake of PrEP among Latino sexual minority men (SMM) at individual, interpersonal, and cultural levels. While the significance of cultural factors in designing and implementing HIV prevention programs for Latino popu…
A conceptual framework for mineral supply chain traceability
A holistic and integrated conceptual framework is proposed to enhance traceability in mineral supply chains. • Governance and compliance mechanisms are identified as pivotal components of effective traceability systems. • Social impact, supply chain operations, performance evaluation, and technology contribute to improved traceability. • The framework promotes ethical sourcing and sustainable practices across the mineral supply chain. Companies t…
Geography (3 works) · Medicine (3 works) · Econometrics (2 works) · Economics (2 works) · Heteroscedasticity (2 works) · Latin Americans (2 works) · Philosophy (2 works) · Philosophy (2 works) · Stock (firearms (2 works) · Stock Market Forecasting Methods (2 works)