Results 81 to 90 of about 11,388 (294)

Performance Analysis of Abradable Coating Systems for Aircraft Gas Turbines

Advanced Engineering Materials, EarlyView.
Three CoNiCrAlY/YSZ/MgAl2O4 abradable liner configurations on a nickel‐superalloy are evaluated by thermal‐gradient cycling and incursion tests. Laser ablation of the bondcoat and/or Y2O3‐stabilized ZrO2 (YSZ) intermediate layer increases mechanical interlocking and bonding for thick topcoats.
Hanna Heyl, Daniel Emil Mack, Martin Tandler, Susanne Schrüfer, Robert Vaßen   +4 more
wiley   +1 more source

Navigating geometric thought: A classroom-based intervention using discovery-contextual strategies aligned with van Hiele’s cognitive framework

Al-Jabar
Purpose: This study aims to investigate the enhancement of students’ geometric thinking through the integration of Discovery–Contextual learning strategies with van Hiele’s levels of reasoning.
Nofyta Arlianti, Kamid, Jefri Marzal, Muhammad Haris Effendi Hasibuan   +3 more
doaj   +1 more source

تحليل محتوى كتب الرياضيات للصف الثاني المتوسط في ضوء مهارات التفكير الهندسي Analysis of the content of mathematics books for the second intermediate grade in light of geometric thinking skills [PDF]

مجلة تربويات الرياضيات
يهدف هذا البحث إلى تحليل محتوى كتب الرياضيات للصف الثاني المتوسط في المملكة العربية السعودية في ضوء مهارات التفكير الهندسي (التصويري، التحليلي، الاستدلالي الشكلي وغير الشكلي، والتجريدي)، ويركز البحث على تقييم مدى توفر هذه المهارات في المناهج الدراسية من ...
سيف محمد هديبان الرشيدي
doaj   +1 more source

Phase Field Failure Modeling: Brittle‐Ductile Dual‐Phase Microstructures under Compressive Loading

Advanced Engineering Materials, EarlyView.
The approach by Amor and the approach by Miehe and Zhang for asymmetric damage behavior in the phase field method for fracture are compared regarding their fitness for microcrack‐based failure modeling. The comparison is performed for the case of a dual‐phase microstructure with a brittle and a ductile constituent.
Jakob Huber, Jan Torgersen, Ewald Werner
wiley   +1 more source

The Effect of Designed Geometry Teaching Lesson to the Candidate Teachers’ Van Hiele Geometric Thinking Level

, 2015
The aim of this study is to find out how designed Geometry Teaching Lesson affects candidate teachers’ Van Hiele Geometric Thinking Levels. For that purpose, 14 weeks long study was performed with 44 candidate teachers who were university students in ...
Yılmaz, Gül Kaleli, Koparan, Timur
core   +2 more sources

Fostering Innovation: Streamlining Magnetocaloric Materials Research by Digitalization

Advanced Engineering Materials, EarlyView.
Magnetocaloric cooling (MCE) is an environmentally friendly refrigeration method with great potential. Optimizing MCE materials involves the preparation and screening of large quantities of samples, which in turn generates a large amount of data. A digitalization approach is presented that uses ontologies, knowledge graphs, and digital workflows to ...
Simon Bekemeier, Moritz Blum, Luana Caron, Alisa Chirkova, Philipp Cimiano, Basil Ell, Inga Ennen, Michael Feige, Maik Gaerner, Thomas Hilbig, Andreas Hütten, Günter Reiss, Tapas Samanta, Sonja Schöning, Christian Schröder, Lennart Schwan, Chris Taake, Martin Wortmann   +17 more
wiley   +1 more source

STUDENTS’ CREATIVITY WITH INFORMAL DEDUCTION OF VAN HIELE’S GEOMETRIC THINKING LEVEL

, 2018
This paper aims to describe students’ creativity and geometric thinking informal deduction level in solving geometric problem which involves two students at informal deduction level in 10 grade. This can be reference to the other researchers or educators
ZELLA TERYANI SURYA, ALWYS, EKAWATI, ROOSELYNA   +1 more
core   +1 more source

Microstructure Evolution of a VMnFeCoNi High‐Entropy Alloy After Synthesis, Swaging, and Annealing

Advanced Engineering Materials, EarlyView.
The synthesis and processing (rotary swaging and annealing) of the novel VMnFeCoNi alloy is investigated, alongside the estimation of the grain size effect on hardness. Analysis of a wide grain size range of recrystallized microstructures (12–210 µm) reveals a low annealing twin density.
Aditya Srinivasan Tirunilai, Zeki Ayrildi, Buse Şen, Maik Rajkowski, Mathias Redondo Garcia, Markus Stricker, Guillaume Laplanche   +6 more
wiley   +1 more source

Hydrogen‐Assisted Fracture of Iron‐Based Fe–Ni–Al Alloys

Advanced Engineering Materials, EarlyView.
Principal relations and fracture mechanisms of single‐phase and precipitate‐strengthened Fe–Ni–Al alloys subjected to prior electrochemical hydrogen charging are identified. The mechanisms of hydrogen effect on strength and microhardness are discussed, including hydrogen‐induced increase in microhardness and the role of hydrogen in fracture behavior ...
Nataliya Yadzhak, Olha Zvirko, Rostyslav Leshchak, Hryhoriy Nykyforchyn   +3 more
wiley   +1 more source

The development of multiplicative thinking in young children

, 2003
This paper describes developmental changes as children move from additive to multiplicative thinking. Five broad phases through which multiplicative thinking develops were synthesised from the research.
Jacob, L., Willis, S.
core