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14,188 results on '"Ortiz A."'

1. Recognition of the Tamaulipas whitesided jackrabbit (Lepus altamirae E. W. Nelson, 1904) (Lagomorpha: Leporidae) in its type locality, Altamira/Reconocimiento de la liebre de costados blancos de Tamaulipas (Lepus altamirae E. W. Nelson, 1904) (Lagomorpha: Leporidae) en la localidad tipo, Altamira

Author

de Jesus Balderas-Mancilla, Ulises, Farias-Gonzalez, Veronica, Hernandez-Hernandez, Mauricio, Frias-Morales, Bruno, De Los Angeles Medrano-Walt, Maria, Vazquez-Maldonado, Laura Elena, Azuara-Dominguez, Ausencio, Gallo-Reynoso, Juan Pablo, and Ortiz-Guerrero, Arturo

Published
2024
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13. Promoting Covariational Reasoning with the Aid of Digital Technology = Promoviendo el razonamiento covariacional con apoyo de la Tecnología digital

Author

Pérez Martínez, Helen Mariel, Cuevas-Vallejo, Carlos A., Islas Ortiz, Erasmo, and Orozco-Santiago, José

Abstract

In this paper, we present the development of an investigation on the promotion of covariational reasoning in high school students (14-15 years old) in Mexico. The study consists of designing and applying a sequence of didactic activities that simulate a real situation virtually. The activities are organized through a Hypothetical Learning Trajectory supported by digital technology and elements of Cuevas-Pluvinage didactics. The activities were evaluated according to the levels of covariation proposed by Carlson and colleagues, categorizing students' achievements and difficulties for each level of understanding. The results show that the activities favor students' progress by moving from the context situation to the different representations, establishing the relationship between the variables, and identifying their functional dependence. [For the complete proceedings, see ED630210.]

Published
2022

14. Promoting Proportional Reasoning with the Support of Digital Technology = Promoviendo el razonamiento proporcional con apoyo de la tecnología digital

Author

Ortiz, Erasmo Islas, Cuevas-Vallejo, Carlos A., and Orozco-Santiago, José

Abstract

In this report, we present an advance of doctoral research. We explore teaching alternatives that promote proportional reasoning in Mexican students between 14 and 15 years old with the support of digital technology. We designed a sequence of activities that pretends to signify the concepts of ratio and proportion in their diverse representations and from the perspective of linear functions. For the design of the tasks, elements of the Realistic Mathematics Education framework and Cuevas-Pluvinage Didactics were used. The learning objectives and proposed activities were organized through a hypothetical learning trajectory. Subject to presenting the group results, we randomly selected a student to present the analysis of the results achieved. We found that the tasks promoted proportional reasoning. [For the complete proceedings, see ED630210.]

Published
2022

17. Escala para evaluar la experiencia espiritual diaria en una muestra de jóvenes de Bogotá, Colombia: análisis psicométrico/The daily spiritual experience scale in a sample of citizens from Bogotá, Colombia: Psychometric Analysis/Escala para avaliar a experiência espiritual diária em uma amostra de cidadãos de Bogotá, Colômbia: análise psicométrica/?‰chelle d>évaluation de l>expérience spirituelle quotidienne dans un échantillon de citoyens de Bogotá, en Colombie: analyse psychométrique

Author

Osorio Castaño, César Augusto, Ortiz Garzón, Eliana Ivette, and Avendaño Prieto, Bertha Lucía

Published
2024
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18. Factores clínicos y epidemiológicos asociados a la infección por Clostridioides difficile en un hospital de tercer nivel en la ciudad de Medellín, Colombia/Clinical and Epidemiological Factors Associated with Clostridioides difficile Infection in a Tertiary Hospital in Medellin, Colombia

Author

Ortiz-Marín, Diana Cristina, Montaño-Mejía, Juliana, Cardona-Arango, María Dorys, López-Estrada, Carolina, Villa-Franco, Juan Pablo, Cardeño-Sánchez, John Jairo, and Restrepo-Castro, Carlos Andrés

Published
2024

21. Development of Space Reasoning in Early Ages through Variation Activities = Diseño de actividades para el desarrollo de razonamiento espacial en edades tempranas a través de manipulativos

Author

Ortiz-Rocha, Yudi Andrea, Sandoval, Ivonne, and Sacristán, Ana Isabel

Abstract

Spatial reasoning skills are necessary to perform activities at school, at work and in everyday life, in general. Different studies indicate the importance of its development at an early age, since it allows the reading of a three-dimensional world and its interpretation in two-dimensional representations. Our research focuses on the design of activities, using the Theory of Variation, to enhance spatial reasoning skills in seven to eight year-old students. In this document, we present characteristics of the design of an activity based on the use of pentominoes (two-dimensional puzzles). The results show that spatial reasoning skills develop when the following actions are favored: comparing, overlapping, rotating, moving, visualizing, and imagining movements, positions and locations of the pentomino pieces. [For the complete proceedings, see ED629884.]

Published
2020

22. Towards a Just Energy Transition: Implications for communities in lower- and middle-income countries

Author

Dalabajan, Dante, Mayne, Ruth, Bobson, Blandina, Qazzaz, Hadeel, Ushie, Henry, Ocharan, Jacobo, Farr, Jason, Romero, Jorge, Priego, Karla, Gomez Correa, Laura Victoria, Gomez Ortiz, Leandro, Socci, Ludovica, Buenaventura Goldman, Marianne, Rosario Felizco, Maria, Dabi, Nafkote, Chauke, Nkateko, Haq, Oskar, Martinez Arellano, Pilar, Mojica Enciso, Sandra Patricia, Khoirun Ni’mah, Siti, and Fadzai Zano, Veronica

Subjects
Climate change, Inequality, Rights, Changement climatique, Inégalités, Droits
Abstract

More frequent or intense floods, heatwaves, wildfires, droughts and typhoons devastate people’s homes, livelihoods and the natural world. A clean energy transition is urgently needed to reduce carbon emissions and prevent the impacts worsening. Wealthy countries have the prime historic responsibility for the climate crisis and therefore for its mitigation. But as the clean energy transition gathers speed, it inevitably also impacts lower-income, lower-emitting countries and communities. This research report, written by 20 co-authors from Africa, Asia, Latin America, the Middle East, the US and Europe, investigates the implications of the energy transition for them, and asks how the world can achieve a truly just, as well as fast, transition., The findings highlight the stark choice facing humanity. If the transition is undertaken with justice and respect for communities’ rights at its heart, it offers an unprecedented opportunity to simultaneously mitigate the climate crisis and reduce poverty and inequality. Conversely, an unjust transition, which entrenches or exacerbates inequalities, risks generating public resistance and slowing the transition with devastating human consequences., Inondations, vagues de chaleur, incendies de forêt, sécheresse et typhons… Ces phénomènes de plus en plus fréquents ou intenses ont des effets dévastateurs sur les habitations, les moyens de subsistance et le milieu naturel. La transition vers une énergie propre est plus que jamais nécessaire pour réduire les émissions de CO2 et éviter des conséquences encore plus lourdes. Premiers responsables historiques de la crise climatique, les pays riches ont aussi la responsabilité d’en atténuer les effets. Mais à mesure que la transition vers l’énergie propre s’accélère, elle n’est pas sans répercussions sur les pays et les communautés à faible revenu, qui produisent moins d’émissions. Le présent rapport de recherche, fruit du travail conjoint de 20 auteur·es d’Afrique, d’Asie, d’Amérique latine, du Moyen-Orient, des États-Unis et d’Europe, se penche sur les conséquences de la transition énergétique pour ces pays et communautés, en s’interrogeant sur la manière dont le monde pourrait mettre en œuvre, sans tarder, une transition véritablement juste., Ce rapport aboutit à la conclusion que l’humanité est aujourd’hui confrontée à un choix difficile. Si cette transition énergétique se déroule en prenant comme axe central l’équité et le respect des communautés, elle offre une opportunité sans précédent d’atténuer à la fois la crise climatique et la pauvreté et les inégalités. À l’inverse, une approche injuste, qui perpétue voire aggrave les inégalités, risque de provoquer des réticences parmi la population et de ralentir la transition, avec des conséquences humaines désastreuses.

Published
2022
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37. Análisis comparativo de bloqueo del plano transverso abdominal y analgesia intravenosa en cirugía abdominal abierta: perspectiva desde la metodología Pain Out.

Author

Rascón-Martínez, Dulce María, Aburto-Monzalvo, Hugo, Ojeda-Ramírez, Lorena, Estefanía Adan-Nuñez, Eurídice, Zaide Delgadillo-Téllez, Brianda, Mariela González-Prior, Jessica, Ortiz-Sánchez, Lizeth, Cantellano-de Miguel, Sandro, and Ortiz-Higareda, Vanessa

Abstract

Copyright of Revista Mexicana de Anestesiología is the property of Colegio Mexicano de Anestesiologia and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Published
2024
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39. Tendencias en Modelación Matemática en Latinoamérica = Latin American Trends in Mathematical Modeling

Author

Solares Rojas, Armando, Preciado Babb, Armando Paulino, Peña, Fredy, Ortiz, Andrea, Rosas, Marisol Sandova, Velasco, Remedios Soriano, Vázquez, Vicente Carrión, and Fuentes, Mauricio Farrugia

Abstract

Throughout the years, Mathematical Modeling has gained international attention, not only in research but also in the development of curricula and its applications in the classroom. However, systematic literary surveys are scarce. In this paper, we present some findings from a survey of 485 international publications related to different aspects of mathematical modeling. While the number of Latin-American publications is rather small compared to the number of international publications, the vitality of the currently discussed themes in this region and their innovative perspectives testify to the international relevance of this developed work on mathematical modeling. [This paper is provided in both Spanish and English. For the complete proceedings, see ED606531.]

Published
2018

47. Morbilidad y mortalidad perioperatoria en pacientes llevados a cirugía electiva y de urgencia durante la pandemia por covid-19 en un hospital de cuarto nivel

Author

Valderrama-Beltrán, Sandra Liliana, Grueso-Angulo, Reinaldo, Montealegre-Díaz, Juan Sebastián, Bernal-Gutiérrez, Marcela, Cataño, Juan Guillermo, Galvis-Navarrete, Silvia Helena, Ramírez- Schneider, Edgar, Torres-Ortiz, María Paula, Portilla-Rojas, Esteban, and Torregrosa-Almonacid, Lilian

Published
2023
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