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Gender differences in elementary school students' fraction learning: roles of spatial ability and mathematical anxiety.
Front Psychol
December 2024
Shanghai Key Laboratory of Brain Functional Genomics, Affiliated Mental Health Center (ECNU), School of Psychology and Cognitive Science, East China Normal University, Shanghai, China.
Aim: In this study, we examined gender differences in fraction learning and explored potential underlying mechanisms.
Methods: The mediating effects of spatial ability and mathematical anxiety on gender differences in fraction learning were tested in elementary school students. A total of 165 sixth-grade students (83 girls) from public elementary schools participated in the study.
The Role of Nonequilibrium Solvent Effects in Enhancing Direct CO Capture at the Air-Aqueous Amino Acid Interface.
J Am Chem Soc
December 2024
Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830, United States.
Direct air capture (DAC) technologies are limited by the poor understanding of the dynamic role of interfaces in modulating the chemisorption of CO from air into solutions. While the reactivity of aqueous amine-based solvents in the bulk environment is strongly inhibited by nonequilibrium solvent effects, promoting DAC at interfaces posits a possibility to reduce the coupling with the solvent and significantly accelerate DAC. Building on an experimentally proven concept to bring an anionic glycine absorbent to the interface through ion-pairing interactions with a positively charged surfactant, we establish the fundamental time scales for key elementary steps involved in DAC with rate theory and enhanced-sampling molecular dynamics simulations.
View Article and Find Full Text PDFA novel algorithmic multi-attribute decision-making framework for the evaluation of energy systems using rough approximations of hypersoft sets.
Heliyon
December 2024
Department of Mathematics, University of Management and Technology, Lahore, 54000, Pakistan.
Selecting the best power source that is legal, affordable, environmentally friendly, and able to ensure long-term viability is a difficult but vital task. Existing frameworks based on traditional fuzzy and soft sets are unable to adequately capture the complexity of the optimal energy system selection (ESS). These decision models may also be complex, especially when rough data and integrity need to be taken into account.
View Article and Find Full Text PDFMathematical Modeling of Physical Reality: From Numbers to Fractals, Quantum Mechanics and the Standard Model.
Entropy (Basel)
November 2024
Département de l'Informatique et d'Ingénierie, Université du Québec en Outaouais (UQO), Case Postale 1250, Succursale Hull, Gatineau, QC J8X 3X7, Canada.
In physics, we construct idealized mathematical models in order to explain various phenomena which we observe or create in our laboratories. In this article, I recall how sophisticated mathematical models evolved from the concept of a number created thousands of years ago, and I discuss some challenges and open questions in quantum foundations and in the Standard Model. We liberated nuclear energy, landed on the Moon and built 'quantum computers'.
View Article and Find Full Text PDFWe explore the implementation of dynamic behavior in holographic displays through the activation of static elementary holograms. This research takes place in an ambitious concept of near-eye display, free of any focusing optical system. We investigate the dynamic addressing of holographic elements with a size of about 27 µm, distributed on centimeter-size samples.
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