Matemàtica
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La enseñanza-aprendizaje de estadística para ingenieros informáticos centrado en el método de proyectos
(Universidad de Pinar del Río "Hermanos Saíz Montes de Oca", 2022)La formación profesional de ingenieros informáticos en la Universidad de Pinar del Río "Hermanos Saíz Montes de Oca" ha estado determinada históricamente por el aprendizaje de contenidos estadísticos, los cuales son clave ... -
Prácticas matemáticas democráticas: Análisis de una experiencia escolar
(Sociedad Española de Investigación en Educación Matemática, 2021)En este artículo proponemos caracterizar las prácticas matemáticas democráticas promovidas en una clase de matemáticas con estudiantes de 12 y 13 años centrada en la enseñanza y el aprendizaje de la medida de longitud. Se ... -
Tareas profesionales en la formación de maestros de educación infantil: promoviendo el razonamiento en 0-3
(Universidade Luterana do Brasil, 2021)Antecedentes: La formación de docentes en todos los niveles ha sido objeto de estudio permanente en las últimas décadas, sin embargo, en el caso de la Educación Infantil, se han realizado pocas investigaciones para ... -
Simulation Analysis and Comparison of New Hybrid TLI-µTESLA and Variant TESLA Protocols Using SHA-2 and SHA-3 Hash Functions
(MDPI, 2022)The evolution of 5G and 6G networks has enhanced the ability of massive IoT devices to provide real-time monitoring and interaction with the surrounding environment. Despite recent advances, the necessary security services, ... -
The solution of the Poincaré problem on the rational first integral for the Liénard polynomial differential equations
(Elsevier, 2023)In this work we classify the polynomial Liénard differential equations ̈𝑥 + 𝑓(𝑥) ̇𝑥 + 𝑥 = 0, having a rational first integral. Such classification was asked by Poincaré in 1891 for any general polynomial differential ... -
Polynomial Liénard systems with a nilpotent global center
(Springer, 2022)A center for a differential system x˙=f(x) in R2 is a singular point p having a neighborhood U such that U∖{p} is filled with periodic orbits. A global center is a center p such that R2∖{p} is filled with periodic orbits. ... -
Enhanced Inf-TESLA Protocol: A Continuous Connectivity and Low Overhead Authentication Protocol via IoT Devices
(Institute of Electrical and Electronics Engineers, 2022)Continuous and low-cost broadcast authentication is a fundamental security service for distributed sensor networks. This paper presents a novel development of a continuous and low-overhead broadcast authentication protocol ... -
Criteria on the existence of limit cycles in planar polynomial differential systems
(Elsevier, 2022)We summarize known criteria for the non-existence, existence and on the number of limit cycles of autonomous real planar polynomial differential systems, and also provide new results. We give examples of systems which ... -
Trisections and cubes in elliptic curves
(Elsevier, 2023)We show how to compute the pre-images of multiplication by 3 in the group of points of an elliptic curve E over a field k of characteristic different from 2 and 3 such that E[3](k) = E[3]. We show Q = (xQ, yQ) ∈ [3]E(k) ... -
Effectiveness of a healthcare-based mobile intervention on sedentary patterns, physical activity, mental well-being and clinical and productivity outcomes in office employees with type 2 diabetes: study protocol for a randomized controlled trial
(Springer Nature, 2022)Background: Prolonged sedentary time is associated with an increased incidence of chronic disease including type 2 diabetes mellitus (DM2). Given that occupational sedentary time contributes signifcantly to the total ... -
On New Record Graphs Close to Bipartite Moore Graphs
(Springer Nature, 2022)The modelling of interconnection networks by graphs motivated the study of several extremal problems that involve well known parameters of a graph (degree, diameter, girth and order) and optimising one of the parameters ... -
Second-generation anticoagulant rodenticides in the blood of obligate and facultative European avian scavengers
(Elsevier, 2022)The widespread use of second-generation anticoagulant rodenticides (SGARs) and their high persistence in animal tissues has led to these compounds becoming ubiquitous in rodent-predator-scavenger food webs. Exposure to ... -
Does Influenza Vaccination Reduce the Risk of Contracting COVID-19?
(MDPI, 2022)The concurrent timing of the COVID-19 pandemic and the seasonal occurrence of influenza, makes it especially important to analyze the possible effect of the influenza vaccine on the risk of contracting COVID-19, or in ... -
Uma fala no ambiente escolar: legitimando significados algébricos
(Edur, 2018)In this article, the purpose is to re-aim (= look again) the speech of 13-year-old students while solving relational situations that lead to algebraic thinking. For this we use the Semantic Field Model (MCS) to identify ... -
Analysis of the emotional vocabulary in a group of secondary education students
(Universidad de Almería, 2022)Introduction.Numerous studies prove the importance of emotional intelligence in promot-ing emotional regulation, self-knowledge, empathy and the ability to develop strong social relationships. Some ... -
Baryogenesis in non-extensive Tsallis Cosmology
(Elsevier, 2022)Non-extensive Tsallis thermostatistics is a widespread paradigm to describe large-scale gravitational systems. In this work we use Tsallis Cosmology to study thermodynamic gravity and derive modified Friedmann equations. ... -
Differences in Free-Living Patterns of Sedentary Behaviour between Office Employees with Diabetes and Office Employees without Diabetes: A Principal Component Analysis for Clinical Practice
(MDPI, 2022)Aims: To identify principal components of free-living patterns of sedentary behaviour in office employees with type 2 diabetes (T2D) compared to normal glucose metabolism (NGM) office employees, using principal component ... -
Network reliability in hamiltonian graphs
(Elsevier, 2021)The reliability polynomial of a graph gives the probability that a graph remains operational when all its edges could fail independently with a certain fixed probability. In general, the problem of finding uniformly most ... -
Household photovoltaic systems optimization methodology based on graph theory reliability
(Elsevier, 2022)A novel passive strategy to overcome the inconveniences of possible failure or underperformance of the components of a household scale photovoltaic (PV) system is proposed. The developed methodology is based on network ... -
On the Dynamics of Higgins–Selkov, Selkov and Brusellator Oscillators
(MDPI, 2022)A complete algebraic characterization of the first integrals of the Higgins–Selkov, Selkov and Brusellator oscillators is given here. The existence of symmetries sometimes forces the existence of such first integrals. ...