Results 21 to 30 of about 20,742 (118)

Basin of Attraction Analysis in Piecewise-Linear Systems with Big-Bang Bifurcation for the Period-Increment Phenomenon

open access: yesMathematics
This paper investigates the basins of attraction of periodic orbits arising in one-dimensional piecewise-linear discrete dynamical systems as the system parameters vary in a neighborhood of a Big-Bang bifurcation point associated with the period ...
Juan Carlos Vargas Bernal   +2 more
doaj   +1 more source

SM-COLSARSPROT: Highly Immunogenic Supramutational Synthetic Peptides Covering the World’s Population

open access: yesFrontiers in Immunology, 2022
Fifty ~20–amino acid (aa)–long peptides were selected from functionally relevant SARS-CoV-2 S, M, and E proteins for trial B-21 and another 53 common ones, plus some new ones derived from the virus’ main genetic variants for complementary trial C-21 ...
Manuel A. Patarroyo   +24 more
doaj   +1 more source

estar: An R package to measure ecological stability

open access: yesMethods in Ecology and Evolution, EarlyView.
Abstract Assessing ecological stability is a key task in biodiversity monitoring and conservation. Quantifying stability is not trivial because its different aspects can be measured with various properties. However, to date, no software enables measuring different stability properties on ecological time‐series data.
Ludmilla Figueiredo   +6 more
wiley   +1 more source

LA CONSTRUCCIÓN DE HECHOS NUMÉRICOS BÁSICOS: INCIDENCIA DEL SEXO, CURSO Y NIVEL SOCIOECONÓMICO DEL ALUMNO

open access: yesCiencias Psicológicas, 2017
Existe amplia evidencia a nivel internacional para confirmar una desventaja académica en el rendimiento matemático de alumnos provenientes de niveles socioeconómicos (NSE) bajos.
Alexa von Hagen   +2 more
doaj   +1 more source

Una mirada sobre conceptos del cálculo desde el conocimiento de los temas del profesorado de matemática de secundaria

open access: yesInnovaciones Educativas, 2022
Las dificultades relativas a la enseñanza y aprendizaje del cálculo implican tanto al estudiantado que cursa la asignatura como al profesorado que la imparte, más aún cuando los cambios curriculares incitan al profesorado a enseñarla en el nivel de ...
Cristián Bustos Tiemann
doaj   +1 more source

Geographic risks to functional groups of mammals and birds from habitat loss in Mexico

open access: yesConservation Biology, EarlyView.
Abstract There is a need to quantify the impact of habitat loss due to anthropogenic factors on different aspects of biodiversity, such as functional trait diversity represented by functional groups (FGs). We developed a metric to assess the weighted risk of loss of habitat for 33 FGs of mammals and 36 FGs of birds in Mexico based on potential ...
Fernando Mayani‐Parás   +4 more
wiley   +1 more source

Constructed value of information with iterative scoring and parametric uncertainty to identify management‐relevant research priorities for a declining raptor species

open access: yesConservation Biology, EarlyView.
Abstract Constructed value of information (CVoI) is an expert elicitation decision‐analytic tool used to prioritize sources of uncertainty based on their potential to improve decision outcomes if resolved. Despite increased application of CVoI, the robustness of CVoI prioritization of sources of uncertainty relative to differences in expert elicitation
Kristin P. Davis   +7 more
wiley   +1 more source

Arreglo Inteligente de Concentración Solar FV para MPPT usando Tecnología FPGA / Smart PV Solar Concentration Arrays for MPPT using FPGA Technology

open access: yesRevista Técnica de la Facultad de Ingeniería, 2020
Resumen La presente investigación comprende el estudio de los sistemas fotovoltaicos y las actuales técnicas para el seguimiento del punto de máxima potencia, en relación a la irradiancia y temperatura, a fin de proponer un esquema FV reconfigurable ...
Cecilia Sandoval Ruiz
doaj  

Calibration of the species threat abatement and restoration metric's threat abatement component in a Costa Rican landscape

open access: yesConservation Biology, EarlyView.
Abstract Achieving global conservation policy goals requires the ability to set and measure progress toward science‐based targets for biodiversity. The species threat abatement and restoration (STAR) metric was developed to enable actors to set science‐based targets for species.
Louise Mair   +17 more
wiley   +1 more source

SELECCIÓN Y ANÁLISIS DE ECUACIONES ANTROPOMÉTRICAS PARA EL CÁLCULO DE LA COMPOSICIÓN CORPORAL EN ADULTOS

open access: yesRevista Ingeniería, Matemáticas y Ciencias de la Información, 2017
En diversos estudios se han utilizado criterios antropométricos, como el índice de masa corporal (peso-estatura), para definir la obesidad, no obstante estos índices poseen poca sensibilidad para monitorear y calcular realmente el sobrepeso y la obesidad.
ALDO PIÑEDA GERALDO   +3 more
doaj   +1 more source

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