Results 71 to 80 of about 23,048 (261)

Workflow for Design of Experiments‐Based Modeling of Species Transport and Growth Kinetics in GaN Hydride Vapor Phase Epitaxy

open access: yesAdvanced Engineering Materials, EarlyView.
A novel workflow for investigating hydride vapor phase epitaxy for GaN bulk crystal growth is proposed. It combines Design of experiments (DoE) with physical simulations of mass transport and crystal growth kinetics, serving as an intermediate step between DoE and experiments.
J. Tomkovič   +7 more
wiley   +1 more source

Comparison of Triply Periodic Minimal Surface Energy Absorbers Under Uniaxial Compressive Loading

open access: yesAdvanced Engineering Materials, EarlyView.
This study investigates LCD 3D printed Triply Periodic Minimal Surface (TPMS) structures as mechanical energy absorbers. By comparing various base designs and layered combinations under uniaxial compression, it identifies that a Diamond‐Gyroid sandwich structure offers superior performance.
Sergej Grednev   +2 more
wiley   +1 more source

New AI‐Assisted Approach for Expanding the Solution Space: Application to Lattice Structure Design

open access: yesAdvanced Engineering Materials, EarlyView.
This work introduces an innovative framework for designing structured materials by ex panding the design space through reparameterization of qualitative variables into continuous structural descriptors. Combined with machine‐learning‐based prediction and multi‐objective optimization, the approach enables the discovery of novel lattice architectures ...
G. H. Gahimbare   +5 more
wiley   +1 more source

A meta-analysis of the relationship between metacognition and academic achievement in mathematics: From preschool to university

open access: yesActa Psychologica
Many studies have explored the relationship between metacognition and academic achievement in mathematics, but the results vary. In this study, meta-analysis was used to explore this relationship between metacognition and academic achievement in ...
Yuntian Xie, Feiyan Zeng, Yujing Yang
doaj   +1 more source

High‐Temperature Phase Transformation in a V‐9Si‐6.5B Alloy: The Kinetic and Crystallographic Pathway From V5SiB2 to V8SiB4

open access: yesAdvanced Engineering Materials, EarlyView.
In situ synchrotron high‐energy X‐ray diffraction reveals the real‐time high‐temperature phase evolution of a ternary V‐9Si‐6.5B alloy. The study uncovers a kinetically delayed V5SiB2 → V8SiB4 transformation governed by massive structural and chemical barriers.
Zahra Sabeti   +4 more
wiley   +1 more source

Executive Functioning and Mathematics Achievement

open access: yesChild Development Perspectives, 2014
Abstract The importance of executive functioning ( EF ) skills in mathematical achievement is well established, and researchers have moved from just measuring working memory or updating to an inclusion of other EF skills, namely ...
Bull, Rebecca, Lee, Kerry
openaire   +2 more sources

Enhanced Ultrasound Transmission Through Aberration Layers Using Space‐Coiling Acoustic Metamaterials

open access: yesAdvanced Engineering Materials, EarlyView.
Enhancing ultrasound transmission through an aberration layer exhibiting mismatched impedance with the surrounding medium possesses great implications in imaging and treatment. In this study, we show that a space‐coiling acoustic metamaterial with judiciously tailored structural profile can help improve impedance matching.
Maral Ghanami   +4 more
wiley   +1 more source

Mathematics Anxiety and Educational Inequalities: A Territorial Perspective on Mathematics Learning

open access: yesRevista Brasileira de Educação do Campo
This study investigated the relationships among mathematics anxiety, mathematics achievement, and territorial inequalities. Participants were 312 students from the 5th and 6th grades of elementary education, aged between 9 and 12 years ...
Marcos Guilherme Moura-Silva   +3 more
doaj   +1 more source

Investigating the Effect of Inclination Angle and the Influence of Scan Parameters on the Appearance and Thermal and Mechanical Properties of Filigree Tension Rods of LPBF‐Manufactured NiTi Shape‐Memory Alloys

open access: yesAdvanced Engineering Materials, EarlyView.
This article investigates the dependence of the properties on the manufacturing orientation in the form of the inclination angle to the build plate of LPBF‐fabricated NiTi rods with a diameter of 150–220 µm. Metallographic, chemical, thermal, and mechanical characterization show behavior under identical manufacturing conditions that ranges from ...
Sandra Herzig   +2 more
wiley   +1 more source

Hubungan Kemampuan Awal dan Kepercayaan Diri dengan Prestasi Belajar Matematika pada Siswa Kelas V SDN 4 Rensing Tahun Pembelajaran 2016/2017

open access: yesFondatia : Jurnal Pendidikan Dasar, 2018
The purpose of this study is 1) Want to know the relationship of the initial ability of students in improving the achievement of learning Mathematics in grade V SDN 4 Rensing.
Yuliana Susanti
doaj   +1 more source

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