Repositorio Institucional Universidad Finis Terrae
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The Impact of Audiovisual Content on Bitcoin’s Transaction Volume and Price
No full textThis article examines the impact of audiovisual content on Bitcoin’s price and transaction volume, a topic with limited exploration in financial literature. Using correlation analysis and econometric models, it investigates audience data from films, series, and documentaries about Bitcoin, alongside public interest metrics from YouTube and Twitch. The results show weak correlations (<0.2) between search levels of most titles and Bitcoin’s financial variables. However, on YouTube, an increase in subscribers to cryptocurrency-related channels has positively and significantly affected Bitcoin’s price and transaction volume. These findings highlight the influence of content creators on cryptocurrency adoption and investment, offering a framework for future research on the impact of audiovisual media on financial markets.
Este artículo analiza el impacto del contenido audiovisual en el precio y el volumen de transacciones de Bitcoin, un área poco explorada en la literatura financiera. A través un análisis correlacional y econométrico, se estudian datos de audiencia de películas, series y documentales sobre Bitcoin, junto con métricas de interés público en YouTube y Twitch. Los resultados muestran correlaciones débiles (<0,2) entre los niveles de búsqueda de la mayoría de los títulos y las variables financieras de Bitcoin. Sin embargo, en YouTube, el aumento de suscriptores en canales relacionados con criptomonedas tiene un efecto positivo y significativo en el precio y el volumen de transacciones de Bitcoin. Estos hallazgos resaltan la influencia de los creadores de contenido en la adopción e inversión en criptomonedas, lo que proporciona un marco para investigaciones futuras sobre el impacto de los medios audiovisuales en los mercados financieros
Adaptación transcultural del Multilingual Assessment Instrument for Narratives (MAIN) al español de Chile
No full textEl objetivo principal de este estudio fue realizar la adaptación transcultural al español de Chile del Multilingual Assessment Instrument for Narratives - MAIN, una herramienta de evaluación narrativa disponible en diversas lenguas. El proceso consideró seis etapas: traducción directa, síntesis, retrotraducción, revisión y versión preliminar, pilotaje, informe final y presentación al comité de expertos. La adaptación prestó especial atención a aspectos léxicos, gramaticales y culturales para asegurar la comprensión y familiaridad del instrumento en el contexto cotidiano de los niños chilenos, sin comprometer la estructura y el formato original de la prueba. De acuerdo con estudios previos en otras lenguas, los resultados del pilotaje mostraron un incremento en el desempeño de las categorías de producción narrativa con la edad de los niños de 4 a 7 años 11 meses. En cuanto a la comprensión, se observó una mejora con la edad, alcanzado un punto máximo alrededor de los 6 años. Estos hallazgos coinciden con investigaciones anteriores realizadas con el MAIN. La disponibilidad de una herramienta común adaptada a diferentes lenguas facilita la comparación y el intercambio de datos entre profesionales e investigadores de diversos contextos lingüísticos y culturales. Este trabajo también fomenta la adaptación del MAIN a otras lenguas habladas en Iberoamérica, abriendo la posibilidad de evaluar combinaciones lingüísticas que no suelen ser consideradas en la actualidad.
The main objective of this study was to carry out the cross-cultural adaptation of the Multilingual Assessment Instrument for Narratives - MAIN, a narrative assessment instrument available in several languages, to Chilean Spanish. The adaptation process involved six stages: direct translation, synthesis, back-translation, revision and preliminary version, piloting, final report and presentation to the committee of experts. The adaptation paid special attention to lexical, grammatical, and cultural aspects to ensure the comprehension and familiarity of the instrument in the everyday context of Chilean children, without compromising the original structure and format of the test. In line with previous studies in other languages, the results of the pilot test revealed an increase in performance in the narrative production categories with the age of children from 4 to 7 years. Regarding comprehension, an improvement with age was observed, reaching a peak around 6 years of age. These findings are consistent with previous research conducted with the MAIN. The availability of a tool adapted to different languages facilitates the comparison and exchange of data between professionals and researchers from a range of linguistic and cultural contexts. This work also promotes the adaptation of the MAIN to other languages spoken in Ibero-America, opening up the possibility of assessing language combinations that are not usually assessed
Writing High-Quality Case Studies in Sport Science
No full textSport-physiology and -performance research often relies on group designs that compare experimental and control groups and/or preintervention and postintervention results. This commentary highlights the key elements of a high-quality case study and provides clear guidelines for readers and authors of the International Journal of Sports Physiology and Performance. We propose 4 essential components. First, case studies should offer relevant and original insights by tackling novel issues and defining a clear purpose. Second, they must employ rigorous methodology, encompassing careful participant selection, comprehensive data
collection from diverse sources (eg, interviews, surveys, physiological tests, training diaries, competition data), and deliberate data analysis that explicitly addresses factors influencing performance changes. Third, they should be well structured and engagingly presented to reach both academic and practical audiences. Finally, bridging the science–practice gap is vital, requiring and strengthening collaboration between researchers and practitioners to enable data-driven decision making and spark new hypotheses. Conclusions: Although case studies traditionally rank low in the research evidence hierarchy, high-quality examples can significantly bridge the gap between research and practice. By working closely with the sporting community and strategically sharing findings, case studies can enhance evidence-based training strategies and amplify the real-world impact of sport science
A comprehensive review of smart energy management systems for photovoltaic power generation utilizing the internet of things
No full textRenewable energy represents the most reliable and widely recognized solution for meeting the escalating global energy demands. The optimization of solar energy generation necessitates a strong focus on predictive maintenance and advanced deployment methodologies. To enhance solar power utilization, Internet of Things enabled solar monitoring systems have been proposed for real-time data acquisition and analytics, facilitating performance forecasting and ensuring consistent power output. A critical challenge in demand-side energy management lies in optimizing the integration of renewable resources while maintaining cost efficiency and minimizing energy losses. Therefore, strategic planning for the integration of renewable energy sources is imperative. Intelligent energy management systems play a pivotal role in optimizing energy distribution, particularly in scenarios with high grid dependency. Cloud computing infrastructures address the complexities and scalability challenges posed by expanding smart grids, enabling real-time data processing and adaptive energy control mechanisms. This study explores the practical implementation of energy management system in industrial settings and research domains, both of which serve as key stakeholders in advancing smart energy solutions. A comprehensive review of internet of things applications in photovoltaic power generation highlights key research objectives and technological developments in the field. The evolving landscape of internet of things driven innovations presents numerous research opportunities, including the formulation of performance evaluation metrics and the development of novel optimization techniques. Additionally, the growing emphasis on energy management within intelligent architectural frameworks underscores the necessity for deeper investigations into adaptive control strategies and system interoperability. This ongoing research is essential for driving advancements in internet of things enabled energy solutions and enhancing the efficiency of smart grid ecosystems
Agenda temática, utilização de fontes e qualidade na mídia alternativa El Ciudadano e El Líbero
No full textEn las primeras décadas de este siglo, los medios alternativos se instalaron con fuerza gracias a la transformación del ecosistema medial posibilitada por la masificación de Internet y las plataformas de las redes sociales. Desde un lugar periférico, estos medios se plantean como distintos a la prensa tradicional, que suele dar cabida casi exclusivamente a los temas de interés de las élites y a sus voces autorizadas, algo que es más marcado en Latinoamérica. Se realizó un análisis cualitativo comparativo y crítico de las informaciones publicadas por dos medios alternativos chilenos de posiciones ideológicas opuestas –El Líbero (derecha) y El Ciudadano (izquierda)– en agosto de 2024, un período preelectoral, para explorar sus agendas temáticas predominantes, el uso de fuentes y la calidad de las informaciones. Los resultados muestran agendas temáticas y uso de fuentes bien marcados a partir de sus posiciones ideológicas, así como encuadres contrapuestos. En ambos medios, no es posible discernir con claridad el origen de muchas fuentes, no hay filtros de verificación, se usa solo una o ninguna fuente viva en dos tercios de las publicaciones y se despliegan opiniones en textos informativos, lo que afecta a la calidad de las informaciones.
In the first decades of this century, alternative media have firmly established themselves thanks to the transformation of the media ecosystem made possible by the massification of the Internet and social media platforms. From a peripheral position, these media differ from the traditional press, which tends to report almost exclusively on the issues that interest the elites and their authoritarian voices, which is even more pronounced in Latin America. A comparative and critical qualitative analysis of the information published by two Chilean alternative media with opposing ideological positions - El Líbero (right) and El Ciudadano (left) - in August 2024, a period before the elections, was carried out to examine their predominant thematic agendas, the use of sources and the quality of information. The results clearly show distinct thematic agendas and the use of sources based on their ideological positions, as well as opposing frames. In both media, the origin of many sources is not clearly identifiable, there are no verification filters, only one or no live source is used in two thirds of the publications and opinions are used in informative texts, which affects the quality of the information
Hematological adaptations to altitude training in female water polo players: a case report of a world championships medal-winning team
No full textBackground: The effective monitoring of athletes’ adaptation is crucial to optimize the outcomes of altitude camps and minimize the risk of maladaptation to the hypoxic stress and intensive training. This case report assessed the hematological adaptations in 22 world-class female water polo players during a 16-day ‘live high-train high’ (LHTH) altitude camp (2320 m) and evaluated the differences between selected (n = 13) and non-selected (n = 9) players and between playing positions. Methods: Hematological parameters, including total hemoglobin mass (tHBmass) and blood volume, were measured before and after the camp. Resting heart rate, peripheral oxygen saturation, body mass, fatigue, and sleep were monitored daily. Results: Relative tHbmass increased PRE to POST (5.4 ± 5.1%, range −3.9–20.2), but blood volume did not change (p = 0.797). Erythrocyte count, hemoglobin concentration, hematocrit, and red cell distribution width increased PRE–POST (p < 0.001, ES = 1.21–2.69), while mean corpuscular volume and hemoglobin decreased (p < 0.001, ES = 0.51 and 0.72, respectively). No substantial differences were observed in the hematological parameters between selected and non-selected players. There was a large difference in the change in relative blood volume between centers (n = 4, PRE 74.1 ± 5.4, POST 69.7 ± 5.9 mL/kg; mean ± SD) and field players (n = 15, PRE 80.8 ± 10.6, POST 82.8 ± 6.8 mL/kg; adj p = 0.046, ES = 1.15) and between centers and goalkeepers (n = 3, PRE 89.7 ± 9.6, POST 82.0 ± 7.1 mL/kg; adj p = 0.046, ES = 1.62). Conclusions: A 16-day LHTH camp can induce favorable hematological adaptations in world-class women’s water polo players, without substantial differences between selected and non-selected players, and larger increases in field players
Revisión del concepto de empleado público según la doctrina y jurisprudencia penal y su diferencia frente a la definición administrativa
No full textArtículo Académico (Magíster en Derecho Público: Transparencia, Regulaciones y Control)--Universidad Finis Terrae, 2025El objeto de este trabajo es aproximarse al concepto actual de empleado público desde el artículo 260 del Código penal. Asimismo, se revisará cómo ha sido utilizado recientemente por la doctrina y la jurisprudencia en materia de participación en delitos especiales. Con ello, se busca establecer las diferencias conceptuales entre el Derecho penal y el Derecho administrativo y los conflictos que pueden generarse para la calificación y atribución de delitos funcionarios
Seasonal transcriptome profile across three different tissues of the Andean Killifish Orestias ascotanensis
No full textThe Andean killifish Orestias ascotanensis inhabits the high-altitude Ascotán Salt Pan, an environment with variable salinity, high UV exposure, low oxygen, and extreme daily temperature fluctuations. These conditions make it an excellent model for studying high-altitude fish biology. However, the transcriptomic responses of O. ascotanensis to seasonal acclimation remain unexplored. To investigate seasonal and tissue-specific transcriptomic profiles, RNA-seq was performed on 42 libraries from gills, skin, and muscle tissues of 14 individuals collected in summer (n = 7) and winter (n = 7). Each library had a median of 105 million reads. Principal component analysis revealed strong tissue-specific expression, and seasonal differential expression analyses identified significant transcriptomic changes within each tissue. Additionally, a bioinformatics pipeline identified 10,365 high-confidence long non-coding RNAs (lncRNAs), predicted by at least three computational tools. Compared to protein-coding genes, lncRNAs exhibited higher tissue specificity, with a predominance of monoexonic structures and shorter exon lengths. This dataset provides the first comprehensive view of seasonal mRNA and lncRNA expression in O. ascotanensis tissues.This work was supported by grants from ANID-FONDECYT 1211026 (MM); Millennium Institute Center for Genome Regulation ICN2021_044 (MM); Millennium Nucleus of Neuroepigenetics and Plasticity NCN2023_032 (MM); FONDECYT de postdoctorado 3190720 and FONDECYT de Iniciación 11220698 (RMA). The authors thank Dr. Miguel Allende (Universidad de Chile) for his assistance during the initial stages of this study
Bibliometric analysis of pedagogical content knowledge: Countries, authors, and fields of knowledge
No full textPedagogical content knowledge (PCK) is a key construct that emerges as distinct from both pedagogical and disciplinary knowledge, essential for understanding how teacher training should be structured. Since its genesis, it has been the subject of thousands of studies, and although there are reviews within each disciplinary PCK area (e.g., PCK in mathematics), there are no bibliometric analyses that allow for the recognition of trends and gaps in productivity in the field of teaching in general. The aim of the present study was to identify such patterns through a review of high-impact specialized journals. For this purpose, 1,942 Web of Science articles were analyzed with various bibliometric parameters and digital visualization software. The results show a series of trends not described in previous literature. The implications for research on teacher training are discussed, considering the initial intent behind the construct's formulation and its relevance to contemporary educational challenges, and new lines of research are proposed
Sustainable recovery of phlorotannins from Durvillaea incurvata: integrated extraction and purification with advanced characterization
No full textThe rising demand for bioactive compounds from marine resources highlights the need for sustainable separation technologies. This study introduces an integrated process combining ultrasound-assisted extraction (USAE) and resin purification (RP) to isolate phlorotannins from Durvillaea incurvata, a brown seaweed with significant biomedical potential. Using a 32.5% ethanol–water solvent system for USAE followed by RP on Diaion HP-20 resin, phlorotannins were enriched 2.4-fold, with simultaneous removal of interfering compounds such as mannitol (~100%), which was demonstrated by FTIR and HPLC-IR analysis. Advanced characterization using UHPLC-QToF-MS/MS identified five novel phlorotannins with polymerization degrees of 3 to 8 phloroglucinol units in both USAE extracts and post-RP. Mass balance based on spectrophotometric measurements indicated a purification factor of ~2, confirming process effectiveness. RP streams showed distinct phlorotannin profiles, with one phlorotannin exceeding 70% relative abundance. However, MS/MS results showed significantly lower recoveries than spectrophotometric data, revealing a novel insight into RP purification. These findings highlight the critical role of comprehensive chemical characterization in optimizing sustainable phlorotannin extraction from seaweed. They propose a framework for scalable, eco-efficient technologies for achieving high-purity phlorotannin recovery. This approach facilitates the development of phlorotannin-based applications in the nutraceutical and pharmaceutical industries