Artículos científicos
Recent Submissions
-
Implementation of an Institutional Mathematics Curriculum: From Expectation to Reality
(Universidad Nacional (Costa Rica), 2022-09-20)Objective. This research aimed to analyze the implementation of the mathematics curriculum of a private primary school located in an urban area of Costa Rica. Methodology. It was developed under the post-positivist paradigm, ... -
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 ... -
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 ... -
Implementation of the Mathematics curriculum in elementary school from the teacher’s perspective
(Universidad Nacional, Costa Rica, 2022-01-31)The objective of this paper is to analyze, from the perspectives of elementary school teachers, the processes they carry out in their classrooms in terms of methodologies and evaluations used in the development of programs ... -
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 ... -
Knowledge of mathematics teachers in initial training regarding mathematical proofs
(Universidad Nacional, Costa Rica, 2022-01-31)The objective of this study is to characterize the knowledge of mathematics teachers in initial training (MTITs) at the Universidad Nacional (Costa Rica) on the logic-syntactic and mathematical aspects ... -
TPACK Model: Teachers’ Perceptions of Their Technological Competence When Conducting an Experimental Virtual Lesson in the Context of Covid-19
(Ulbra - Universidade Luterana do Brasil, 2022-08-28)Background: One of the current concerns in the face of the changes and challenges imposed by the COVID-19 pandemic is the quality of the education received in non-traditional environments such as virtual or hybrid teaching. ... -
Problem solving in the teaching of single variable differential and integral calculus: Perspective of mathematics teachers
(Universidad Nacional (Costa Rica), 2018-07-25)There is a wide diversity of approaches to solving problems in the teaching of mathematics. In particular, the meaning of “problem solving” differs between theory and practice. In the teaching of higher mathematics, problem ... -
Pollen classification based on geometrical, descriptors and colour features using decorrelation stretching method
(IFIP Advances in Information and Communication Technology, 2011-01)Salvar la biodiversidad de la tierra para las generaciones futuras es una importante tarea global, donde el reconocimiento automático de especies de polen por medio de visión artificial representa un tema de alta prioridad. ... -
Analysis of an augmented pseudostress-based mixed formulation for a nonlinear Brinkman model of porous media flow
(Elsevier, 2015)In this paper we introduce and analyze an augmented mixed finite element method for the two-dimensional nonlinear Brinkman model of porous media flow with mixed boundary conditions. More precisely, we extend a previous ... -
Analysis of an Augmented HDG Method for a Class of Quasi-Newtonian Stokes Flows
(Springer, 2015)In this paper we introduce and analyze a hybridizable discontinuous Galerkin (HDG) method for numerically solving a class of nonlinear Stokes models arising in quasi-Newtonian fluids. Similarly as in previous papers dealing ... -
A priori and a posteriori error analyses of an HDG method for the Brinkman problem
(Elsevier, 2018-01-15)In this paper we introduce and analyze a hybridizable discontinuous Galerkin (HDG) method for the linear Brinkman model of porous media flow in two and three dimensions and with non-homogeneous Dirichlet boundary conditions. ... -
A Priori and a Posteriori Error Analyses of an Augmented HDG Method for a Class of Quasi-Newtonian Stokes Flows
(Springer, 2016-12)In a recent work we developed a new hybridizable discontinuous Galerkin (HDG) method for a class of nonlinear Stokes models arising in quasi-Newtonian fluids. The approach there uses the incompressibility condition to ... -
A RTk - P-k approximation for linear elasticity yielding a broken H(div) convergent postprocessed stress
(Universidad Nacional, Costa Rica, 2015)We present a non-standard mixed finite element method for the linear elasticity problem in R-n with non-homogeneous Dirichlet boundary conditions. More precisely, our approach is based on a simplified interpretation of the ... -
Sitio Web: Funciones Cuadráticas Una Experiencia De Desarrollo, Implementación Y Evaluación
(Universidad de Costa Rica, 2006)El presente trabajo expone una experiencia de desarrollo, implementación y evaluación de un sitio Web denominado Funciones Cuadráticas. La experiencia surgió de la necesidad palpable en los centros ... -
A Monte Carlo Study of the Photon Spectrum due to the Different Materials Used in the Construction of Flattening Filters of LINAC
(Hindawi, 2017-07-10)Different types the spectrum of photons were studied; they were emitted from the flattening filter of a LINAC Varian 2100 C/D that operates at 15 MV. The simplified geometry of the LINAC head was calculated using the MCNPX ... -
A mixed virtual element method for quasi-Newtonian stokes flows
(SIAM, 2018)In this paper we introduce and analyze a virtual element method (VEM) for an augmented mixed variational formulation of a class of nonlinear Stokes models arising in quasi-Newtonian fluids. While the original unknowns are ... -
Impacto de las Nuevas Tecnologías de la Información y la Comunicación para la Enseñanza de la Matemática en la Educación Superior
(Instituto Tecnológico de Costa Rica, 2014)Se plantea cuáles son las implicaciones de la sociedad de la información y el conocimiento en el ámbito educativo y cómo en particular las tecnologías digitales están transformando el modelo de universidad tradicional, en ... -
Una Forma Distinta para Hallar la Distancia de un Punto a una Recta
(Instituto Tecnológico de Costa Rica, 2015)La siguiente propuesta nace de la iniciativa de compartir con los cole-gas, una prueba formal de un resultado que nos permite hallar la distancia de un punto a una recta. El resultado se diferencia de la relación típica ... -
Resolución de sucesiones definidas por una Relación de Recurrencia Homogénea Lineal con Valores Propios de Multiplicidad Algebraica Mayor Estricta que Uno
(Instituto Tecnológico de Costa Rica, 2003)El presente trabajo consiste en la segunda parte de una aplicación de los valores y vectores propios de una matriz, para resolver una relación de recurrencia homogénea lineal con coeficientes constantes. La aplicación ...
RSS 1.0