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Now showing items 1-9 of 9
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Analysis of the influence of GLONASS signals in the processing of one regional geodestic Network
(Universidad Nacional, Costa Rica, 2018-01-31)In recent years, there has been an increase in the number of satellites available for positioning using space techniques, highlighting the GPS and GLONASS systems. The comparative analysis of the results ... -
Aporte ambiental de la planta de tratamiento de aguas residuales Los Tajos en la remoción de contaminantes fisicoquímicos y microbiológicos
(Universidad Nacional, Costa Rica, 2022-01-31)The objective of the study was to analyze the environmental contribution, in terms of removal of physicochemical and microbiological pollutants, from the Los Tajos Wastewater Treatment Plant (WWTP) to the Torres River. ... -
Concordancia entre los cursos de introducción a la matemática universitaria y el programa de estudios preuniversitarios
(Universidad Nacional, Costa Rica, 2018-07-25)This article reports data about academic achievement in introductory university level mathematics courses taught by the Department of Mathematics at the Universidad Nacional de Costa Rica and the concord-ance ... -
Control de calidad de imagen y dosimetría, para mamografía digital, utilizando el fantoma Normi Mam Digital
(Universidad Nacional, Costa Rica, 2018-07-26)In Costa Rica there is not an explicit recommendation given by the Regulatory Authorities for the utilization of a specific Phantom; that is why experts have to explore what is offered in the market. One of the most ... -
Diseño de una metodología para evaluar el manejo sostenible de los bosques naturales de la Zona Norte, Costa Rica
(Universidad Nacional (Costa Rica), 2021)A partir de un conjunto de indicadores de referencia, se diseñó una herramienta para la evaluación “ex post” de la sostenibilidad de unidades de bosques naturales manejados en Costa Rica. Este conjunto se desarrolló ... -
Estudio preliminar con respecto a los efectos en la salud de trabajadores y su relación con la exposición a emisiones gaseosas volcánicas. Un caso de estudio en dos volcanes activos de Costa Rica
(Universidad Nacional, Costa Rica, 2022-01-31)The objective of this research was to carry out a preliminary diagnosis of the relationship between volcanic gaseous emissions and health effects present among workers of the National System of Conservation Areas (SINAC) ... -
Gender, self-efficacy and performance in a mathematics test
(Universidad Nacional, Costa Rica, 2022-01-31)El propósito del estudio fue examinar la relación entre autoeficacia matemática y el rendimiento en la prueba nacional de bachillerato en matemáticas, que considera otros predictores psicosociales ... -
Gestión del riesgo de desastres: Competencias para una nueva cultura hidroambiental
(Universidad Nacional, Costa Rica, 2022-01-31)The study was aimed to develop and validate competencies, methodologies, and teaching resources for a new hydro-environmental culture in disaster risk management for Costa Rican ... -
Teacher Reflection on a Teaching-Learning Situation Regarding the Concept of Relation in Secondary Education
(Universidad Nacional, Costa Rica, 2022-01-31)This study is part of the research in didactics of mathematicson teacher training. In particular, the study focuses on the knowledge of mathematics teachers, taking as a reference the theoretical ...