Mostrando ítems 41-59 de 59

Dynamic and sequential update for time series forecasting

GALLARDO PÉREZ, HENRY DE JESÚS; Vergel Ortega, Mawency; Rojas Suárez, Jhan Piero (Journal of Physics: Conference Series, 2020-08-05)

Two different sciences, physics and statistics, have worked, from the foundations of each, on the explanation and modelling of stochastic processes characterized by the succession of random variables whose realizations at ...
Assessing wind and solar resources. Case study: department of Norte de Santander, Colombia, stage 1

GALLARDO PÉREZ, HENRY DE JESÚS; SERPA, ALEJANDRA; Mogollon, G (2020-08-05)

Renewable sources used to produce energy has gained momentum due to its environmental benefits and economic feasibility. Colombia has been part of the global tendency to develop non-conventional renewable technologies such ...
Pedagogical practices of physics teachers from the Catatumbo region, Colombia

GALLARDO PÉREZ, HENRY DE JESÚS; Vergel Ortega, Mawency; Villamizar Jaimes, D (Journal of Physics: Conference Series, 2020-08-05)

Pedagogical practice allows teachers to focus their attention on three types of knowledge: disciplinary knowledge: what do I know, pedagogical knowledge: how do I communicate what I know, and academic knowledge: how do ...
Análisis dinámico de series temporales multivariadas

GALLARDO PÉREZ, HENRY DE JESÚS; Rojas Suárez, Jhan Piero; Vergel Ortega, Mawency (Journal of Physics: Conference SeriesColombia, 2020-07-01)

El estudio de los sistemas dinámicos es un tema de gran interés en las ciencias básicas, económicas, empresariales, entre otras, permite realizar inferencia directa del comportamiento de los diferentes sistemas. El objetivo ...
Resilience in successful math and physics students

Rojas Suárez, Jhan Piero; Vergel Ortega, Mawency; GALLARDO PÉREZ, HENRY DE JESÚS (Journal of Physics: Conference Series, 2020-08-05)

Resilience refers to the student's ability to overcome emotional periods caused by adverse situations. In this sense, research aims to evaluate the relationship between academic performance in mathematics and physics and ...
Pedagogical strategies of the teaching and learning processes of mathematics and physics to strengthen ethical values in students

Vergel Ortega, Mawency; GALLARDO PÉREZ, HENRY DE JESÚS; Barrera García, A M (Journal of Physics: Conference Series, 2020-09-30)

This research project seeks to analyze the relationship of ethical values with the process of teaching and learning mathematics and physics through a pedagogical strategy in students of the eleventh grade of the "Escuela ...
Didactic Engineering in the Development of Numerical Thinking

Vergel Ortega, Mawency; GALLARDO PÉREZ, HENRY DE JESÚS; Rangel Peinado, Carlos Luis (Journal of Physics: Conference Series, 2020-09-01)

The development of numerical thinking in primary education is an important aspect of children’s mathematical training, since it allows for a general understanding of numbers and operations in order to facilitate the ...
Real teaching situations to encourage the learning of fractions from physics

GALLARDO PÉREZ, HENRY DE JESÚS; Galvis Burgos, M I; Villamizar Jaimes, D (Journal of Physics: Conference Series, 2020-09-30)

The research aims to implement real didactic situations for learning fractions and physics in students from educational institutions in "San José de Cúcuta, Norte de Santander, Colombia". From the theoretical point of view, ...
Teaching the wave concept through problem-based learning

GALLARDO PÉREZ, HENRY DE JESÚS; Vergel Ortega, Mawency; Rojas Suárez, Jhan Piero (Journal of Physics: Conference Series, 2020-11-04)

The wave movements can be studied from autonomous work done by the student since they are processes in which he can appreciate and understand how the transmission of energy from one part to another without transfer of ...
Descriptive analysis of storytelling concepts in physics

GALLARDO PÉREZ, HENRY DE JESÚS; Rojas Suárez, Jhan Piero; Vergel Ortega, Mawency (Journal of Physics: Conference Series, 2020-11-04)

The research identifies storytelling concepts in Physics from university professors. The research follows a qualitative approach applied to 250 participants from universities in the department Norte de Santander, Colombia. ...
Variability of live loads computed from the analysis of internal forces produced during service life of dwellings

GALLARDO PÉREZ, HENRY DE JESÚS; Vergel Ortega, Mawency; MARQUEZ-PEÑARANDA, JORGE FERNANDO (Journal of Physics: Conference Series, 2020-12-05)

In the field of civil engineering, live loads are related to the use of the floors of buildings and dwellings. Live loads are produced by weight of people and furniture. Such loads generate internal physical effects such ...
Mathematical economics in the explanation of economic growth in economies with endogenous and exogenous technological change

Vergel Ortega, Mawency; GALLARDO PÉREZ, HENRY DE JESÚS; Rojas Suárez, Jhan Piero (Journal of Physics: Conference Series, 2021-05-01)

Economic growth is a function of the interactions between the different productive factors framed in the economic policy of an economy, in particular, it can be expressed in terms of labour force, productive resources ...
Percepción en la planificación de cursos de física: relaciones en entornos sincrónicos

MARQUEZ-PEÑARANDA, JORGE FERNANDO; Vergel Ortega, Mawency; GALLARDO PÉREZ, HENRY DE JESÚS (Revista Boletin Redipe, 2020-12-11)

La investigación se realizó con estudiantes de física I y II de universidades del Departamento Norte de Santander-Colombia. Su objetivo fue establecer la relación entre la planificación de las clases de los profesores y ...
Project based pedagogy in the development of physical-mathematical thinking

GALLARDO PÉREZ, HENRY DE JESÚS; Villamizar Jaimes, D; MALDONADO ESTÉVEZ, ERIKA ALEJANDRA (Journal of Physics: Conference Series, 2020-12-16)

Physical-mathematical thinking is the visible representation of the relationship between physics and mathematics. It is based on the development of the five types of mathematical thinking and leads to the consolidation of ...
Las tecnologías de la información y las comunicaciones en el fortalecimiento del pensamiento físico matemático

Vergel Ortega, Mawency; GALLARDO PÉREZ, HENRY DE JESÚS; Portal Domingo, Reinaldo (Aibi revista de investigación, administración e ingenieríaColombia, 2020-12-14)

El objetivo de la investigación fue asociar el uso de las tecnologías de la información y las comunicaciones, concernientes al ejercicio de la labor de un grupo de estudiantes pertenecientes a universidades públicas, ...
Modelo estructural para liderazgo y emprendimiento de mujeres indígenas Yukpas

Vergel Ortega, Mawency; GALLARDO PÉREZ, HENRY DE JESÚS; Dávila Carrillo, Cesar Augusto (Mundo FescColombia, 2021-01-01)

The objective of this work is to design a structural model that identifies explanatory variables of leadership and entrepreneurship in the Yukpa community. The research follows an ethnographic method and mixed approach: ...
Escala para valororar el estrés en estudiantes de cursos de física en tiempos de covid-19

MARQUEZ-PEÑARANDA, JORGE FERNANDO; GALLARDO PÉREZ, HENRY DE JESÚS; Vergel Ortega, Mawency (Revista Boletin Redipe, 2021-01-01)

El aprendizaje de la física supone arduos esfuerzos cuyos resultados con frecuencia se muestran en paradójica desproporción lo cual conlleva a generar estrategia para valorar el nivel de estrés entre los estudiantes puesto ...
Estimation of missing data in a geophysical series of precipitation

Vergel Ortega, Mawency; GALLARDO PÉREZ, HENRY DE JESÚS; Rojas Suárez, Jhan Piero (Journal of Physics: Conference Series, 2021-06-09)

The analysis of dynamic systems is a topic of great interest in the basic sciences since it allows direct inference of the behavior of different systems. The study of physical phenomena provides large databases that, if ...
Physical – mathematical model to determine the structural efficiency of sections shaped as ellipses and parallelograms when used in reinforced concrete columns

GALLARDO PÉREZ, HENRY DE JESÚS; Vergel Ortega, Mawency; Marquez, Jorge Fernando (Journal of Physics: Conference Series, 2021-06-09)

Current practice of structural design of reinforced concrete columns uses mainly rectangular and circular sections. Among other reasons, this preference is linked to its ease of construction and spatial efficiency, and the ...

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Dynamic and sequential update for time series forecasting
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GALLARDO PÉREZ, HENRY DE JESÚS | 2020-08-05

Two different sciences, physics and statistics, have worked, from the foundations of each, on the explanation and modelling of stochastic processes characterized by the succession of random variables whose realizations at each instant of time give rise to time series. From Physics we have worked with the Fourier transform to explain the dynamics of time series, a similar case occurs from statistics where dynamic models of time series are worked to explain the variations of the series and, in both cases, to make reliable forecasts. The main objective of this research is to adjust a model, using the methodology framed in the sequential update procedure of the forecast, to a time series of coal production observed quarterly during the years 2007 to 2011, in order to disaggregate quarterly the annual production for the years 2012 to 2018. Once the process has been carried out and validated, a quarterly production model is estimated which allows valid and reliable forecasts to be made for each quarter in subsequent years.

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Assessing wind and solar resources. Case study: department of Norte de Santander, Colombia, stage 1
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GALLARDO PÉREZ, HENRY DE JESÚS | 2020-08-05

Renewable sources used to produce energy has gained momentum due to its environmental benefits and economic feasibility. Colombia has been part of the global tendency to develop non-conventional renewable technologies such as wind and solar and integrate those technologies into the energy matrix of the country. However, the lack of understanding of the wind and solar resources in some areas of the country including the department of Norte de Santander, Colombia, has limited the deployment of these technologies and the development of new projects. This research proposes an approach to assess wind and solar resources in the department of Norte de Santander, Colombia. Also, this paper discusses the physics behind the generation of energy from wind and solar sources and the contributions required from different backgrounds to help in the wide deployment of solar and wind energy. In this first stage, a rough technical concept is developed, and the proposed sites are selected based on publicly available maps of low resolution presenting average irradiance and wind speed, and proximity to electricity transmission infrastructure. The areas selected have a global horizontal irradiance ranging from 4.0 kWh/m2 to 5.0 kWh/m2 and wind speeds between 4.0 m/s and 6.0 m/s at 10.0 m height on average in a year.

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Pedagogical practices of physics teachers from the Catatumbo region, Colombia
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GALLARDO PÉREZ, HENRY DE JESÚS | 2020-08-05

Pedagogical practice allows teachers to focus their attention on three types of knowledge: disciplinary knowledge: what do I know, pedagogical knowledge: how do I communicate what I know, and academic knowledge: how do I transform myself with what I know? Thus, the teacher has the capacity to transform not only his or her students, but to transform himself or herself in the process. In this sense, the research aims to characterize the pedagogical practice of physics teachers in educational institutions located in the “Catatumbo, Colombia”, a region characterized by high levels of violence and very specific social situations; it also aims to determine the influence of training at the master's level of the Francisco de Paula Santander University on teachers working in the area of physics. The research, framed in the mixed paradigm, allows the realization of univariate and multivariate analysis of variables inherent to the process of training and professional action of master teachers, as well as the categorization of their experiences resulting from the application of knowledge obtained throughout their studies in their professional practice and training in different areas of knowledge, emphasizing the practices, laboratories and teaching strategies used in the training of students by physics teachers.

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Análisis dinámico de series temporales multivariadas
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GALLARDO PÉREZ, HENRY DE JESÚS | 2020-07-01

El estudio de los sistemas dinámicos es un tema de gran interés en las ciencias básicas, económicas, empresariales, entre otras, permite realizar inferencia directa del comportamiento de los diferentes sistemas. El objetivo del trabajo consiste en la aplicación de modelos estadísticos de series temporales a la estimación empírica de ecuaciones que conforman sistemas dinámicos con el propósito de describir las relaciones entre factores capaces de producir alteraciones en un sistema económico, físico, social o ambiental y plantear ecuaciones de evolución para ese sistema. La metodología se enmarca en el paradigma cuantitativo y utiliza un razonamiento deductivo que, a partir del análisis de datos univariados y multivariados, recolectados a intervalos regulares de tiempo, permite establecer un derrotero para ajustar modelos dinámicos confiables que expliquen el comportamiento de variables aleatorias a lo largo del tiempo. Las aplicaciones revisten importancia para las diferentes ciencias puesto que permiten identificar y estimar modelos que describan sistemas dinámicos en variables estocásticas relacionadas.

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Resilience in successful math and physics students
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Rojas Suárez, Jhan Piero | 2020-08-05

Resilience refers to the student's ability to overcome emotional periods caused by adverse situations. In this sense, research aims to evaluate the relationship between academic performance in mathematics and physics and school success in higher education students. The research is framed within a quantitative, descriptive-comparative and micro-sociological methodological approach developed with data from primary sources. Data collection was transectional and the sample was 1500 students. The Wagnild and Young resilience scale was used. The results show that there is an important relationship between the level of demand, the application of mathematics and physics, abstraction and academic performance. Students develop emotional resilience skills that allow them to improve their quality of life. In conclusion, resilience is significantly related to all strengths of character, as well as to positive acceptance of change and personal competence. It was identified that, while resilience helps students to be more tolerant and to better understand what is happening in their environment, it is precisely in these challenges that the strengths of high educational performance are manifested. Successful students demonstrate skills in formal thinking, creative thinking, applying mathematics, physics and resilience, all of which impact on their quality of life.

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Pedagogical strategies of the teaching and learning processes of mathematics and physics to strengthen ethical values in students
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Vergel Ortega, Mawency | 2020-09-30

This research project seeks to analyze the relationship of ethical values with the process of teaching and learning mathematics and physics through a pedagogical strategy in students of the eleventh grade of the "Escuela Bicentenario, Universidad de Pamplona, Colombia", through the technique of the focus group. Thus, the research process allows us to recognize that ethical values such as responsibility, honesty, justice and solidarity are strengthened through the implementation of pedagogical strategies within the classroom and their impact on the formation of the life project, being the development of physical-mathematical thinking a fundamental axis for the strengthening of values.

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Didactic Engineering in the Development of Numerical Thinking
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Vergel Ortega, Mawency | 2020-09-01

The development of numerical thinking in primary education is an important aspect of children’s mathematical training, since it allows for a general understanding of numbers and operations in order to facilitate the development of their handling and application. The work allows the implementation of a pedagogical strategy based on didactic engineering, which allows students to identify and formulate questions related to the management and understanding of numbers and their basic operations together with the decision to approach individually and which ones in a group way while planning and making decisions in their development and evaluation of results. The study is framed in the quantitative paradigm, in a quasi-experimental design, working with control and experimental groups. Pre-test is applied to identify the development of numerical thinking in students and as a support to the design of the intervention proposal. Once the proposal is developed, it is evaluated by means of a post-test that allows identifying significant improvements in the numerical thinking of the children of the experimental group in comparison with those of the control group. This leads to the conclusion that the developed intervention contributes favorably to the development of numerical thinking in children

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$Portada Real teaching situations to encourage the learning of fractions from physics$

Real teaching situations to encourage the learning of fractions from physics
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GALLARDO PÉREZ, HENRY DE JESÚS | 2020-09-30

The research aims to implement real didactic situations for learning fractions and physics in students from educational institutions in "San José de Cúcuta, Norte de Santander, Colombia". From the theoretical point of view, it starts from one of the ideas that have been emerging in recent times regarding the teaching of physics, such as the development of physical-mathematical thinking by inserting the paradigm of didactic situations into the educational environment. The research is part of a field study, quasi-experimental with self-control. The treatment plan was organized in five didactic situations on theoretical and practical aspects of physics. The results of the pretest reflect deficiencies in the use of mathematical contents associated to the description of physical phenomena in the population under study, which allowed the design and implementation of a pedagogical intervention plan. The post-test showed an increase in the execution of mathematical models in the application to physical phenomena, which inferred the effectiveness of the intervention plan, whose activities allowed innovation in the classroom to achieve the students' attention. It is concluded that the didactic proposal was an enriching experience with the active participation of the students.

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Teaching the wave concept through problem-based learning
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GALLARDO PÉREZ, HENRY DE JESÚS | 2020-11-04

The wave movements can be studied from autonomous work done by the student since they are processes in which he can appreciate and understand how the transmission of energy from one part to another without transfer of matter is. Problem-based learning constitutes a good alternative to study the concept of waves since it sequentially leads the student to structure the knowledge to use it in the context, to develop effective processes of reasoning, to develop self-directed learning skills and to motivate him/her to learn, together with the development of the capacity to work in a team and it favors the development of the mathematical physical thought. The research is developed from the multi-method methodological approach developing in-depth interviews to teachers and knowledge tests to students with the purpose of establishing both pre-knowledge and initial situations for structuring the pedagogical intervention and the evaluation of its results. The pedagogical intervention is structured on a quasi-experimental design in which the strategy of problem-based learning is applied to the teaching and learning of physics and is compared with the traditional methodology. The research allows us to conclude that applying the problem-based learning methodology to physics teaching, we obtain better educational yields than with traditional teaching, while it generates a greater motivation and a greater interest in learning. It also allows the student to integrate the knowledge into his or her context, visualize the usefulness of learning and apply knowledge to the solution of problems in his or her environment, in other words, it allows the student to achieve significant learning and therefore a development of mathematical physical thinking.

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Descriptive analysis of storytelling concepts in physics
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GALLARDO PÉREZ, HENRY DE JESÚS | 2020-11-04

The research identifies storytelling concepts in Physics from university professors. The research follows a qualitative approach applied to 250 participants from universities in the department Norte de Santander, Colombia. The design implements as an interview technique the Socratic dialogue and as a quantitative support used elements of the correlational design. Interview and virtual survey instruments had a kappa index equal to 0.8 and α = 0.78. The results identify three categories associated with the application of science, the function of the history of Physics and scientific production. It is concluded that participant's concept storytelling is the art of telling a story in motion and a didactic resource associated with approaches, the development of skills, useful to analyse the development of discoveries in Physics, its actors, its application in scientific advances and its contribution to innovation and community development. Classical mechanics, electricity and magnetism with storytelling, identifies in physical science axiological aspects associated with tradition; epistemological aspects associated with experimental physics; and critical aspects.

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Variability of live loads computed from the analysis of internal forces produced during service life of dwellings
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GALLARDO PÉREZ, HENRY DE JESÚS | 2020-12-05

In the field of civil engineering, live loads are related to the use of the floors of buildings and dwellings. Live loads are produced by weight of people and furniture. Such loads generate internal physical effects such bending moments, shear forces or axial forces on structural elements that can show high uncertainty in magnitude and position. This work proposes the application of a physical-mathematical model which considers such uncertainty when forecasting maximum probable live loads to be used in structural analysis and design of elements. To do so, field data of live loads acting on different floors of 20 dwellings built in San Jose de Cucuta, Colombia, were collected and used to verify the model validity. As a result, it was observed a small difference in forecasted live loads with respect to the live loads prescribed by the national and international structural design standards. Live loads forecasted using the model describe modern trends of use of floors and can be used as safe values for designing structural elements. Physical quantities related to bending moment effects resulted to influence importantly the obtained maximum loads values.

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Mathematical economics in the explanation of economic growth in economies with endogenous and exogenous technological change
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Vergel Ortega, Mawency | 2021-05-01

Economic growth is a function of the interactions between the different productive factors framed in the economic policy of an economy, in particular, it can be expressed in terms of labour force, productive resources (land, capital) and technology, among others. The present work pretends to approximate a model to explain the economic growth in developing economies, for which a model is proposed that explains this growth in function of the referred factors; then production is proposed in function of capital and work and two models are adjusted, one with exogenous technological change and the other that involves technological change in an endogenous manner. The model is developed with a production function with constant substitution elasticity so that it is applicable to both developed and developing economies, since it is to be expected that in developed economies the substitution elasticity is unitary, which would lead to a Cobb-Douglas-type production function, but it is very probable that in incipient economies the function with constant substitution elasticity better reflects the relationship between production factors and economic growth. The research allows the development of the corresponding mathematical model in each case, the economic and mathematical foundations of each model are presented and validated according to economic theories. The behaviour of variables such as savings, investment, income, consumption, capital and their relationships in each model is analysed.

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Percepción en la planificación de cursos de física: relaciones en entornos sincrónicos
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MARQUEZ-PEÑARANDA, JORGE FERNANDO | 2020-12-11

La investigación se realizó con estudiantes de física I y II de universidades del Departamento Norte de Santander-Colombia. Su objetivo fue establecer la relación entre la planificación de las clases de los profesores y las percepciones de los estudiantes en entornos sincrónicos. Cuatro instrumentos midieron la percepción de los estudiantes respecto a la práctica pedagógica de los profesores de física. La investigación siguió un enfoque cuantitativo correlacional. Resultados de la investigación muestran que la percepción de los estudiantes sobre la planeación de clase no guarda una asociación estrecha respecto a la consideración que tienen los profesores, encuentros vía streaming muestra asociación a percepción de enfoque, y resultados de aprendizaje. Se establece correlación alta entre la implementación de consideraciones contempladas en el enfoque dialógico-crítico y por competencias, por parte de un alto porcentaje de profesores. La contribución de las acciones realizadas por los docentes para potenciar el desarrollo del pensamiento variacional de los estudiantes a través del quehacer académico y pedagógico, tiene una relación alta entre lo que el profesor realiza y resultados de aprendizaje obtenidos por los estudiantes.

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Project based pedagogy in the development of physical-mathematical thinking
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GALLARDO PÉREZ, HENRY DE JESÚS | 2020-12-16

Physical-mathematical thinking is the visible representation of the relationship between physics and mathematics. It is based on the development of the five types of mathematical thinking and leads to the consolidation of the learning of physics through the construction, interpretation, abstraction and consolidation of meanings for the teacher and the student about physical phenomena. The work allows for the implementation of a pedagogical strategy based on project-based pedagogy, which facilitates the development and application of mathematical algorithms for the analysis, understanding and explanation of physics by students in the context of collaborative field work. The study is framed in the quantitative paradigm, in a quasi-experimental design, working with control and experimental groups. Pre-test is applied to identify the development of physical-mathematical thinking in students and as a support to the design of the intervention proposal. Once the proposal is developed, the results are evaluated by means of a post-test that allows identifying significant improvements in the students' physical-mathematical thinking.

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Las tecnologías de la información y las comunicaciones en el fortalecimiento del pensamiento físico matemático
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Vergel Ortega, Mawency | 2020-12-14

El objetivo de la investigación fue asociar el uso de las tecnologías de la información y las comunicaciones, concernientes al ejercicio de la labor de un grupo de estudiantes pertenecientes a universidades públicas, ubicadas en el Departamento Norte de Santander con el desarrollo del pensamiento, y las condiciones psicosociales, económicas, sociodemográficas. En esta investigación con enfoque multimétodo, se aplican instrumentos para identificar herramientas tecnológicas implementadas por 101 profesores, determinar el desarrollo de pensamiento, conocer las condiciones sociodemográficos y psicosociales de 537 estudiantes de 3 universidades, y en consecuencia determinar un modelo que asocie y explique el nivel de desarrollo del pensamiento matemático de los estudiantes universitarios. Se realizan estadísticas descriptivas de las diferentes variables; y modelos Logit para identificar los factores que influyen utilizando tecnologías. Con un 95% de confiabilidad, los resultados indican que no existe vulnerabilidad psicosocial y los modelos indican que factores gestión educativa relacionada a planeación profesor, herramienta didáctica, resultado de aprendizaje, acceso a plataforma, competencia de innovación, disminuyen o mejoran, la probabilidad de potenciar el desarrollo del pensamiento físico matemático. Se concluye que regresión logística ordinal permite e identificar factores utilizando TIC para pronosticar incrementos en el nivel de desarrollo del pensamiento físico-matemático

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Modelo estructural para liderazgo y emprendimiento de mujeres indígenas Yukpas
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Vergel Ortega, Mawency | 2021-01-01

The objective of this work is to design a structural model that identifies explanatory variables of leadership and entrepreneurship in the Yukpa community. The research follows an ethnographic method and mixed approach: qualitative using elements of factorial and correlational design, based on structural equation modeling (SEM) and quantitative in that instruments such as interview, observation and survey are implemented in a sample of 174 members of the Yukpa community in the municipality of Cúcuta-Colombia. The results allow identifying emerging categories in Yukpa women such as discipline, compassion, solidarity, example, for leadership and participative planning, context, production, organization, marketing, training in entrepreneurship; likewise, solidarity, use of ancestral practices, economic social factors, product, affect consumer behavior. It is concluded that from the logarithmic logit model with base two, the representation in entrepreneurship influenced by the behavior of the leader of the community and the consumer of products in the Yukpa tribe's offer is identified.

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Escala para valororar el estrés en estudiantes de cursos de física en tiempos de covid-19
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MARQUEZ-PEÑARANDA, JORGE FERNANDO | 2021-01-01

El aprendizaje de la física supone arduos esfuerzos cuyos resultados con frecuencia se muestran en paradójica desproporción lo cual conlleva a generar estrategia para valorar el nivel de estrés entre los estudiantes puesto que esto a su vez, permite establecer acciones pedagógicas y didácticas para la enseñanza de la física y para potenciar el pensamiento físico Objetivo: establecer la validez y fiabilidad de una escala para evaluar el estrés en estudiantes de cursos de física de instituciones educativas de educación superior del municipio de Cúcuta en tiempos de covid-19. Materiales y Métodos: Estudio descriptivo de corte transversal, diseño instrumental; evidencia de validez de constructo se evaluó a través de análisis factorial confirmatorio, correlación y comparación; la consistencia interna se estimó mediante el coeficiente alfa de Cronbach. La muestra estuvo constituida por 1200 participantes seleccionados de la población de estudiantes de instituciones educativas públicas y privadas del municipio de Cúcuta, Colombia, de diferentes programas académicos que tienen matriculado cursos de física. Resultados: se conforma una escala con 20 ítems y 3 factores: ansiedad, presión institucional, afrontamiento y se evalúa su fiabilidad y validez para el diagnóstico de estrés en estudiantes de cursos de física. Conclusión: la escala para evaluar el estrés en estudiantes es válida y fiable.

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Estimation of missing data in a geophysical series of precipitation
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Vergel Ortega, Mawency | 2021-06-09

The analysis of dynamic systems is a topic of great interest in the basic sciences since it allows direct inference of the behavior of different systems. The study of physical phenomena provides large databases that, if recorded at regular time intervals, constitute time series. However, time series of geophysical data in many cases present missing data and their estimation requires the application of valid methods that allow estimating reliable information to complete the series since some analysis methods require these series to be complete. Two methods are used in this article to estimate the missing values of the precipitation series in the city of San José de Cúcuta, Colombia, the first one consists of considering the univariate data series and applying an adjustment of the sequential conditional expectation method of forecasting with restrictions, the second one refers to analyze the data series of a nearby station and through multivariate methods establish the cointegration between the series, and then use this as a basis for estimating the missing data in the analysis series. The two methods are recursive, a first estimation of the model is made ignoring the missing data, an initial estimation of the missing data is made, then a new estimation of the model parameters and a new estimation of the missing data is made, the algorithm continues running with the new values replacing the values estimated in the previous phase until the difference of the estimated values between successive iterations is less than a value fixed beforehand. Finally, a comparison is made between the estimates made by the two methods.

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Physical – mathematical model to determine the structural efficiency of sections shaped as ellipses and parallelograms when used in reinforced concrete columns
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GALLARDO PÉREZ, HENRY DE JESÚS | 2021-06-09

Current practice of structural design of reinforced concrete columns uses mainly rectangular and circular sections. Among other reasons, this preference is linked to its ease of construction and spatial efficiency, and the historical inertia of civil works processes. Nowadays, modern design and construction techniques make possible to study the structural beahviour of sections distinctively shaped. If typical sections are extended from circular to elliptical and from rectangular to parallelogram shaped, it is possible to compute mathematical and physical parameters needed for the structural analysis. This work presents a physical–mathematical model to determine the structural efficiency in terms of relative strength and stiffness of sections shaped as ellipses and parallelograms when used in reinforced concrete columns. To solve the model, a Matlab® code for drawing the column interaction diagram of each studied section was written. Each diagram describes, in terms of mechanical physics, the relation between the uniaxial bending and the compression load that defines safety conditions as a mathematical limiting curve. The governing equation has the form P(m, g)=f(M(m, g) in which P describes the axial load strength function, M the bending moment strength function, m the material properties, and g the geometrical characteristics function. Structural efficiency has been expressed as the relative behaviour of each section with respect to comparable rectangular sections. To obtain the results of the model, a Matlab® code was written.

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Enseñanza de las Ciencias – Arquímedes: Envíos recientes

Dynamic and sequential update for time series forecasting ﻿

Assessing wind and solar resources. Case study: department of Norte de Santander, Colombia, stage 1 ﻿

Pedagogical practices of physics teachers from the Catatumbo region, Colombia ﻿

Análisis dinámico de series temporales multivariadas ﻿

Resilience in successful math and physics students ﻿

Pedagogical strategies of the teaching and learning processes of mathematics and physics to strengthen ethical values in students ﻿

Didactic Engineering in the Development of Numerical Thinking ﻿

Real teaching situations to encourage the learning of fractions from physics ﻿

Teaching the wave concept through problem-based learning ﻿

Descriptive analysis of storytelling concepts in physics ﻿

Variability of live loads computed from the analysis of internal forces produced during service life of dwellings ﻿

Mathematical economics in the explanation of economic growth in economies with endogenous and exogenous technological change ﻿

Percepción en la planificación de cursos de física: relaciones en entornos sincrónicos ﻿

Project based pedagogy in the development of physical-mathematical thinking ﻿

Las tecnologías de la información y las comunicaciones en el fortalecimiento del pensamiento físico matemático ﻿

Modelo estructural para liderazgo y emprendimiento de mujeres indígenas Yukpas ﻿

Escala para valororar el estrés en estudiantes de cursos de física en tiempos de covid-19 ﻿

Estimation of missing data in a geophysical series of precipitation ﻿

Physical – mathematical model to determine the structural efficiency of sections shaped as ellipses and parallelograms when used in reinforced concrete columns ﻿

Envíos recientes

Dynamic and sequential update for time series forecasting

Assessing wind and solar resources. Case study: department of Norte de Santander, Colombia, stage 1

Pedagogical practices of physics teachers from the Catatumbo region, Colombia

Análisis dinámico de series temporales multivariadas

Resilience in successful math and physics students

Pedagogical strategies of the teaching and learning processes of mathematics and physics to strengthen ethical values in students

Didactic Engineering in the Development of Numerical Thinking

Real teaching situations to encourage the learning of fractions from physics

Teaching the wave concept through problem-based learning

Descriptive analysis of storytelling concepts in physics

Variability of live loads computed from the analysis of internal forces produced during service life of dwellings

Mathematical economics in the explanation of economic growth in economies with endogenous and exogenous technological change

Percepción en la planificación de cursos de física: relaciones en entornos sincrónicos

Project based pedagogy in the development of physical-mathematical thinking

Las tecnologías de la información y las comunicaciones en el fortalecimiento del pensamiento físico matemático

Modelo estructural para liderazgo y emprendimiento de mujeres indígenas Yukpas

Escala para valororar el estrés en estudiantes de cursos de física en tiempos de covid-19

Estimation of missing data in a geophysical series of precipitation

Physical – mathematical model to determine the structural efficiency of sections shaped as ellipses and parallelograms when used in reinforced concrete columns

Portales Institucionales

Dynamic and sequential update for time series forecasting

Assessing wind and solar resources. Case study: department of Norte de Santander, Colombia, stage 1

Pedagogical practices of physics teachers from the Catatumbo region, Colombia

Análisis dinámico de series temporales multivariadas

Resilience in successful math and physics students

Pedagogical strategies of the teaching and learning processes of mathematics and physics to strengthen ethical values in students

Didactic Engineering in the Development of Numerical Thinking

Real teaching situations to encourage the learning of fractions from physics

Teaching the wave concept through problem-based learning

Descriptive analysis of storytelling concepts in physics

Variability of live loads computed from the analysis of internal forces produced during service life of dwellings

Mathematical economics in the explanation of economic growth in economies with endogenous and exogenous technological change

Percepción en la planificación de cursos de física: relaciones en entornos sincrónicos

Project based pedagogy in the development of physical-mathematical thinking

Las tecnologías de la información y las comunicaciones en el fortalecimiento del pensamiento físico matemático

Modelo estructural para liderazgo y emprendimiento de mujeres indígenas Yukpas

Escala para valororar el estrés en estudiantes de cursos de física en tiempos de covid-19

Estimation of missing data in a geophysical series of precipitation

Physical – mathematical model to determine the structural efficiency of sections shaped as ellipses and parallelograms when used in reinforced concrete columns