Results 61 to 70 of about 3,900,729 (372)

Enhancing Corrosion Resistance and Mechanical Strength of 3D‐Printed Iron Polylactic Acid for Marine Applications via Laser Surface Texturing

open access: yesAdvanced Engineering Materials, EarlyView.
Laser surface texturing significantly improves the corrosion resistance and mechanical strength of 3D‐printed iron polylactic acid (Ir‐PLA) for marine applications. Optimal laser parameters reduce corrosion by 80% and enhance tensile strength by 25% and ductility by 15%.
Mohammad Rezayat   +6 more
wiley   +1 more source

Introduction of Volume IX Issue 1

open access: yesWOW Stories, 2021
An introduction to WOW Stories Volume IX, Issue 1. This issue presents readers with a range of articles that demonstrate how, through engagement with global literature, students and teachers draw upon personal experiences and beliefs, implement ...
Tracy L. Smiles
doaj  

A Bidirectional Arabic Sign Language Framework Using Deep Learning and Fuzzy Matching Score

open access: yesMathematics
Sign language is widely used to facilitate the communication process between deaf people and their surrounding environment. Sign language, like most other languages, is considered a complex language which cannot be mastered easily.
Mogeeb A. A. Mosleh   +4 more
semanticscholar   +1 more source

Development and Preliminary In Vivo Study of 3D‐Printed Bioactive Glass Scaffolds with Trabecular Architecture

open access: yesAdvanced Engineering Materials, EarlyView.
This study reports the fabrication of trabecular bioactive glass scaffolds (composition “1d”: 46.1SiO2‐28.7CaO‐8.8MgO‐6.2P2O5‐5.7CaF2‐4.5Na2O wt%) through vat photopolymerization and the relevant results from mechanical testing and in vivo implantation procedures in rabbit femora, showing great promise for bone tissue engineering applications.
Dilshat Tulyaganov   +8 more
wiley   +1 more source

An Improved Complex-Valued Recurrent Neural Network Model for Time-Varying Complex-Valued Sylvester Equation

open access: yesIEEE Access, 2019
Complex-valued time-varying Sylvester equation (CVTVSE) has been successfully applied into mathematics and control domain. However, the computation load of solving CVTVSE will rise significantly with the increase of sampling rate, and it is a challenging
Lei Ding   +5 more
doaj   +1 more source

ERRORS ANALYSIS OF STUDENTS IN SOLVING VOLUME OF THE SOLID OF REVOLUTION PROBLEM IN TERM OF CRITICAL THINKING ASPECTS

open access: yesKalamatika, 2020
Students of mathematics education need to have a good understanding in solving integral calculus problems, but often have difficulty in understanding the subject material.
Betty Kusumaningrum   +2 more
doaj   +1 more source

Toward a Semiotic Framework for Using Technology in Mathematics Education: The Case of Learning 3D Geometry [PDF]

open access: yes, 2004
This paper proposes and examines a semiotic framework to inform the use of technology in mathematics education. Semiotics asserts that all cognition is irreducibly triadic, of the nature of a sign, fallible, and thoroughly immersed in a continuing ...
Nason, Rodney, Yeh, Andy
core   +1 more source

A Workflow to Accelerate Microstructure‐Sensitive Fatigue Life Predictions

open access: yesAdvanced Engineering Materials, EarlyView.
This study introduces a workflow to accelerate predictions of microstructure‐sensitive fatigue life. Results from frameworks with varying levels of simplification are benchmarked against published reference results. The analysis reveals a trade‐off between accuracy and model complexity, offering researchers a practical guide for selecting the optimal ...
Luca Loiodice   +2 more
wiley   +1 more source

The Exponential Function Meaning on Mathematical Modeling Activities: A Semiotic Approach

open access: yesREDIMAT, 2018
In this article we present a reflection on the meaning attribution to the mathematical object exponential function that emerges from two mathematical modelling activities.
Karina Alessandra Pessoa da Silva   +1 more
doaj   +1 more source

SIGN PATTERNS OF THE LIOUVILLE AND MÖBIUS FUNCTIONS [PDF]

open access: yesForum of Mathematics, Sigma, 2015
Let ${\it\lambda}$ and ${\it\mu}$ denote the Liouville and Möbius functions, respectively. Hildebrand showed that all eight possible sign patterns for $({\it\lambda}(n),{\it\lambda}(n+1),{\it\lambda}(n+2))$ occur infinitely often.
Kaisa Matomäki   +2 more
semanticscholar   +1 more source

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