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Propuesta didáctica para el aprendizaje de las equivalencias entre porcentajes, fracciones y decimales para estudiantes de primer año medio del Colegio British Royal School de Concepción utilizando herramientas tic y resolución de problemas
No full textPrograma de Formación Pedagógica para Licenciados y/o Profesionales, Licenciado en EducaciónEl aprendizaje de las equivalencias entre fracciones, decimales y porcentajes representa un desafío recurrente en la educación matemática, especialmente en el contexto chileno, donde los resultados de pruebas estandarizadas como SIMCE y PISA han evidenciado importantes brechas en habilidades fundamentales. Este estudio tiene como objetivo diseñar e implementar una propuesta didáctica que combine el uso de herramientas TIC, como GeoGebra, y estrategias de resolución de problemas para abordar estas dificultades en estudiantes de primer año medio del Colegio British Royal School de Concepción. La investigación sigue un diseño cuasiexperimental, con un enfoque cuantitativo y transversal, empleando la prueba EVAMAT 8 como instrumento diagnóstico y evaluativo. El análisis preliminar indicó un bajo desempeño inicial en áreas clave como numeración y cálculo, con dificultades para relacionar fracciones, decimales y porcentajes. Tras la implementación del taller didáctico, los resultados del post-test mostraron un incremento promedio del 30% en las tareas evaluadas, lo que refleja mejoras significativas en la comprensión y aplicación de las equivalencias numéricas. Además, los estudiantes percibieron positivamente el uso de tecnologías interactivas, que facilitaron el aprendizaje y aumentaron su motivación. Estos hallazgos resaltan la efectividad de metodologías que integran TIC y enfoques activos para promover un aprendizaje significativo y transferible a contextos prácticos.The learning of equivalences between fractions, decimals, and percentages is a persistent challenge in mathematics education, particularly in Chile, where standardized tests like SIMCE and PISA reveal significant gaps in fundamental skills. This study aims to design and implement a didactic proposal combining the use of ICT tools, such as GeoGebra, and problem-solving strategies to address these difficulties among first-year high school students at British Royal School in Concepción. The research follows a quasi-experimental design with a quantitative and cross-sectional approach, using the EVAMAT 8 test as a diagnostic and evaluative instrument. Preliminary analysis revealed low initial performance in key areas like numeration and calculation, with challenges in connecting fractions, decimals, and percentages. After implementing the didactic workshop, post-test results showed an average improvement of 30% in evaluated tasks, reflecting significant progress in understanding and applying numerical equivalences. Additionally, students reported a positive perception of interactive technologies, which facilitated learning and increased motivation. These findings highlight the effectiveness of methodologies integrating ICT and active approaches to promote meaningful and transferable learning to practical contexts
Correction: Geldsetzer-Mendoza, C.; Riveros, J.L. Morphophysiological Responses of the Goat Mammary Gland to Water Scarcity in Arid and Semi-Arid Environments: Are They Enough to Generate Adaptation to New Climatic Challenges? <i>Animals</i> 2023, <i>13</i>, 3825 : Morphophysiological Responses of the Goat Mammary Gland to Water Scarcity in Arid and Semi-Arid Environments: Are They Enough to Generate Adaptation to New Climatic Challenges? (Animals, (2023), 13, 24, (3825), 10.3390/ani13243825)
No full textPublisher Copyright: © 2024 by the authors.Additional Affiliation(s) In the original publication [1], there was an error regarding the affiliation for José Luis Riveros. In addition to affiliation 1, the updated affiliation should include: Escuela de Medicina Veterinaria, Facultad de Ciencias de la Naturaleza, Universidad San Sebastián Campus Bellavista, Santiago 7820436, Chile. At the same time, the author needs to change the email address. The revised communication information is “Correspondence: [email protected]”. The authors state that the scientific conclusions are unaffected. This correction was approved by the Academic Editor. The original publication has also been updated
Determinación de los intervalos de referencia de la relación proteína fibrinógeno de perros (canis lupus familiaris) adultos clínicamente sanos en la Región de Los Lagos durante el primer semestre del año 2024
No full textLas proteínas totales, el fibrinógeno y la relación proteína/fibrinógeno son parámetros bioquímicos utilizados en la medicina veterinaria de pequeños animales, proporcionando información sobre el estado de salud de nuestros animales. El objetivo de este estudio fue determinar los intervalos de referencia de estos analitos en perros adultos sanos, así como evaluar su impacto frente a variables fisiológicas, genéticas y ambientales. Se analizaron un total de 145 perros en estudio, agrupados según talla (pequeña, mediana, grande y gigante), tipo de alimentación (estándar, premium, súper premium, casera y mixta), sexo y estado reproductivo. Los resultados mostraron que las proteínas totales seguían una distribución normal, mientras que los valores de fibrinógeno y la relación proteína/fibrinógeno no. No se encontraron diferencias significativas en los analitos con relación a sexo, estado reproductivo, talla o alimentación. Los intervalos de referencia establecidos fueron: proteínas totales (48-80 g/l), fibrinógeno (1-6 g/l) y relación proteína/fibrinógeno (5-28 g/l) siendo estos intervalos más amplios que los actualmente utilizados en la región de Los Lagos. A pesar de que no se encontraron diferencias en las variables propuestas se debería utilizar un n compuesto por una mayor masa poblacional para futuras investigaciones.Total proteins, fibrinogen and the protein/fibrinogen ratio are biochemical parameters used in small animal veterinary medicine, providing information about the health status of our animals. The objective of this study was to determine the reference intervals of these analytes in healthy adult dogs, as well as to evaluate their impact against physiological, genetic and environmental variables. A total of 145 dogs were analyzed in the study, grouped according to size (small, medium, large and giant), type of diet
(standard, premium, super-premium, homemade and mixed), sex and reproductive status. The results showed that total proteins followed a normal distribution, while fibrinogen values and the protein/fibrinogen ratio did not. No significant differences were found in the analytes in relation to sex, reproductive status, size or diet. The established reference intervals were total proteins (48-80 g/l), fibrinogen (1-6 g/l) and protein/fibrinogen ratio (5-28 g/l), these intervals being wider than those currently used in the Los Lagos region. Although no differences were found in the proposed variables, an n composed of a greater population mass should be used for future research
DEVELOPMENT OF A QUESTIONNAIRE TO ASSESS SELF-STIGMA IN PEOPLE WITH EARLY-STAGE DEMENTIA RELATED TO ALZHEIMER'S DISEASE
No full textPublisher Copyright: © 2024, Escuela de Enfermeria Pontificia Universidad Catolica de Chile. All rights reserved.INTRODUCTION. In health care, self-stigma is a type of stigma characterized by patients’ internalization of negative perceptions of their condition, affecting their well-being and restricting their search for care. Dementia is a stigmatized condition. Self-stigma in dementia has received limited attention and the available self-stigma assessment scales don’t consider the patient’s condition. OBJECTIVE. To develop a questionnaire for the assessment of self-stigma in people with the diagnosis of early-stage dementia of the Alzheimer’s type. METHODS. Mixed development study with two phases. To describe manifestations of self-stigma, a qualitative study was first conducted through interviews with eleven individuals who received the diagnosis of early-stage dementia of the Alzheimer type. Using this information, along with conceptual abstraction and operationalization, theoretical dimensions and items were later developed. Apparent and content validity of dimensions and items were examined through consultation with experts (n:3) and people with early-stage dementia (n:3). Suggestions on acceptability and utility were also collected. RESULTS. A first version of the questionnaire was developed to evaluate cognitive and behavioral-affective manifestations of self-stigma in dementia. It was composed of four dimensions and 22 items measured through a four-level Likert scale. CONCLUSION. The questionnaire and suggestions for use are presented. Further studies should examine construct validity through psychometric evaluation. A questionnaire to evaluate self-stigma contributes to identifying the needs of people with dementia and the development of comprehensive care plans
Biological Activity of Complexes Involving Nitro-Containing Ligands and Crystallographic-Theoretical Description of 3,5-DNB Complexes
No full textPublisher Copyright: © 2024 by the authors.Drug resistance in infectious diseases developed by bacteria and fungi is an important issue since it is necessary to further develop novel compounds with biological activity that counteract this problem. In addition, new pharmaceutical compounds with lower secondary effects to treat cancer are needed. Coordination compounds appear to be accessible and promising alternatives aiming to overcome these problems. In this review, we summarize the recent literature on coordination compounds based on nitrobenzoic acid (NBA) as a ligand, its derivatives, and other nitro-containing ligands, which are widely employed owing to their versatility. Additionally, an analysis of crystallographic data is presented, unraveling the coordination preferences and the most effective crystallization methods to grow crystals of good quality. This underscores the significance of elucidating crystalline structures and utilizing computational calculations to deepen the comprehension of the electronic properties of coordination complexes
A proposal for a model of organizational climate management in the educational field, which is based on collaboration in both face-to-face and virtual environments
No full textPublisher Copyright: © 2024, Associacao Iberica de Sistemas e Tecnologias de Informacao. All rights reserved.Organizational climate and collaborative work management are essential to the success of educational organizations. The study examined the relationship between these constructs in students and teachers. The research involved 358 students and 59 teachers and employed multiple linear regression to create predictive models. The results confirmed a positive and significant correlation between organizational climate and collaborative work management in both groups. However, the linear regression analysis highlighted that students showed greater motivation towards managing the climate and the educational process compared to teachers, although teachers demonstrated organizational commitment. This study underscores the importance of organizational climate in education and reveals notable differences between students and teachers, suggesting the need for differentiated collaborative work management strategies for these two groups, including the use of virtual collaborative spaces
Factor structure and measurement invariance of the Patient Health Questionnaire-4 among the Chilean population
No full textPublisher Copyright: © 2024 Moreno, Moreno. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.Background The PHQ-4 is an ultrabrief screening test for depression and anxiety symptoms. The psychometric properties of this test among the population in Chile are unknown. This study was aimed to determine the factor structure of the PHQ-4 in the adult population in Chile, and to assess its measurement invariance across different groups. Methods The study considered a nationally representative sample of 10921 people aged 18 and above, in Chile in 2021. Exploratory and confirmatory factor analysis were conducted, and configural, metric, scalar, and strict measurement invariance were assessed. Results The two-factor structure of the PHQ-4 supported the two underlying constructs of depression and anxiety. This model explained 67% of the variance and had excellent fit (CFI: 0.9999; TLI: 0.9994; RMSEA: 0.0107; SRMR: 0.0022). Strict measurement invariance held across gender, age, area of residence, household income quintile, immigrant or host population, and indigenous or non-indigenous population (ΔCFI<0.01). Conclusion The PHQ-4 can be used to assess depressive and anxiety symptoms in population studies, and as a screening test for depression and anxiety in public mental health programs in Chile
Discursive Interactions of Reading Mediation of Primary Education Teachers of Excellence in Different DisciplinesWhat Can They Contribute to Teaching Practices?
No full textPublisher Copyright: © 2024, Universidade Federal de Minas Gerais, Faculdade de Letras. All rights reserved.Reading mediation interactions in Chile is predominantly reproductive and present limited cognitive challenge. Therefore, the objective of this research was to characterize the discursive interactions of reading mediation in various subjects of excellent primary education teachers. Regarding the methodology, the design was a descriptive and qualitative multiple-case study. The participants were 9 teachers from 6 educational institutions in La Araucanía, Chile, whose audio of their classes (27) were taped and analyzed according to their cycles and types of interactions: dialogic, IRF (Iniciation-ResponseFeedback) or IRE (Iniciation-Response-Evaluation). Concerning the results, we identified a predominance of IRE cycles, but the interactions are significantly more dialogical than the previous evidence
The impact of parenting practices and family economy on psychological wellbeing and learning patterns in higher education students
No full textPublisher Copyright: © The Author(s) 2024.Background There is a large literature on the significant impact of rearing factors in the psychological development of different child’s learning patterns and wellbeing in elementary and secondary schools, but there is a scarcity of studies on to what extent those influences remain stable up to higher education. Objective In this study, parenting practices and family status were analyzed as predictors of the different learning styles, psychological difficulties, mental health factors, and academic performance, comprising the psychosocial diversity in learning (DinL) at the university classroom. Methods Using a cross-sectional design, a questionnaire was administered to a sample of 2522 students at the Complutense University of Madrid (Spain). It included a DinL scale measuring five psychological learning dimensions (coping with difficulties, effort, autonomy, Social/Physical Context, and understanding/career interest), plus several items on retrospective parenting practices, family, and sociodemographic variables. Multiple regressions and analyses of variance were conducted with the family factors as independent variables and the learning factors as dependent variables. Results Results showed parenting variables, parents’ education, and family economy as having a significant impact on psychological learning dimensions, academic performance, and especially on the students’ wellbeing and mental health status, being an important contributors to explain the DinL in the university classroom. Conclusion The results bring interesting conclusions for developmental and health psychologists when working with parents aimed at fostering wellbeing and learning strategies related to academic inclusion and achievement
Understanding relationships between epigenetic marks and their application to robust assignment of chromatin states
No full textPublisher Copyright: © The Author(s) 2024. Published by Oxford University Press.Structural changes of chromatin modulate access to DNA for the molecular machinery involved in the control of transcription. These changes are linked to variations in epigenetic marks that allow to classify chromatin in different functional states depending on the pattern of these histone marks. Importantly, alterations in chromatin states are known to be linked with various diseases, and their changes are known to explain processes such as cellular proliferation. For most of the available samples, there are not enough epigenomic data available to accurately determine chromatin states for the cells affected in each of them. This is mainly due to high costs of performing this type of experiments but also because of lack of a sufficient amount of sample or its degradation. In this work, we describe a cascade method based on a random forest algorithm to infer epigenetic marks, and by doing so, to identify relationships between different histone marks. Importantly, our approach also reduces the number of experimentally determined marks required to assign chromatin states. Moreover, in this work we have identified several relationships between patterns of different histone marks, which strengthens the evidence in favor of a redundant epigenetic code