Results 91 to 100 of about 1,666,932 (329)

Quality Enhancement of Laser Powder‐Bed Fusion Parts by Acoustically Assisted Additive Manufacturing by Laser Powder‐Bed Fusion and its Application to Lattice Structures

Advanced Engineering Materials, EarlyView.
Additive manufacturing technologies like laser powder‐bed fusion offer great design freedom and individualization of products down to a batch size of one. However, parts fabricated with this technology suffer from poor quality. Acoustic assistance during the build process can minimize these drawbacks.
Oliver Maurer, Dirk Bähre
wiley   +1 more source

The Greater Sum of Collaboration: Adding Value to Mathematics Education Through Teamwork [PDF]

, 2014
The role of a Mathematics Specialist can vary from pre-K through grade 8 schools. One of the most distinguishing factors involves the relationship between the Mathematics Specialists, administrators, and teachers.
Butler, B., Deinhart, J., Hulen, T., Kerr, D.   +3 more
core   +1 more source

Exploring mathematical values held by high school mathematics teachers

Discover Education
This study explored mathematical values espoused by senior high school (SHS) mathematics teachers in mathematics teaching and learning in a municipality in Ghana. To achieve this aim, we employed an explanatory sequential mixed methods design.
Esenam Dorwu, Francis Kwadwo Awuah, Patrick Kyeremeh   +2 more
doaj   +1 more source

A Simulative Approach for the Prediction of Mesoscale Residual Stress Fields in Solution‐Strengthened Ferritic Ductile Iron

Advanced Engineering Materials, EarlyView.
This study presents a 3D representative volume element‐based simulation approach to predict mesoscopic residual stress and strain fields in silicon solid solution‐strengthened ductile cast iron. By modeling phase transformation kinetics with an enhanced Johnson–Mehl–Avrami–Kolmogorov model, the effects of varying cooling rates on residual stresses are ...
Lutz Horbach, Oliver Schenk, Valérian Iss, Ali Rajaei, Jiali Zhang, Felix Weber, Christoph Broeckmann   +6 more
wiley   +1 more source

Life Science Majors’ Math-Biology Task Values Relate to Student Characteristics and Predict the Likelihood of Taking Quantitative Biology Courses

Journal of Microbiology & Biology Education, 2018
Expectancy-value theory of achievement motivation predicts that students’ task values, which include their interest in and enjoyment of a task, their perceptions of the usefulness of a task (utility value), and their perceptions of the costs of engaging ...
Sarah E. Andrews, Melissa L. Aikens
doaj   +1 more source

Evaluating Dielectric Properties for Semicrystalline Thermoplastics to Analyze the Thermal and Rheological Properties in Laser‐Based Powder Bed Fusion of Plastics

Advanced Engineering Materials, EarlyView.
This study aims to establish a link between the dielectric properties of polyamide 12 (PA12) and its thermal and rheological properties using dielectric analysis (DEA). A standardized methodology is introduced to determine melting and crystallization temperatures.
Benedikt Burchard, Joseph Hofmann, Katrin Wudy   +2 more
wiley   +1 more source

Teaching mental mathematics from level 5 (National Strategies; Secondary) [PDF]

, 2005
An introduction to a set of materials describing teaching approaches that can be used to develop mental mathematics abilities beyond level 5, covering number, algebra, geometry and statistics.

core  

Spin - or, actually: Spin and Quantum Statistics

, 2008
The history of the discovery of electron spin and the Pauli principle and the mathematics of spin and quantum statistics are reviewed. Pauli's theory of the spinning electron and some of its many applications in mathematics and physics are considered in ...
A. Connes, A. Pais, C. Fefferman, C. Fefferman, C. Fefferman, D. Buchholz, E. Schrödinger, E.C. Stoner, E.H. Lieb, E.H. Lieb, F. Wilczeck, G. Lüdrs, G. Velo, G.A. Goldin, H. Araki, H. Kragh, H. Spohn, J. Fröhlich, J. Fröhlich, J. Fröhlich, J. Fröhlich, J. Fröhlich, J. Fröhlich, J. Fröhlich, J. Fröhlich, J. Fröhlich, J. Fröhlich, J. Fröhlich, J. Fuchs, J. Fuchs, J.D. Jackson, J.J. Bisognano, K. Fredenhagen, K. Osterwalder, L. B. J. Fröhlich, L. Bugliaro Goggia, L. Bugliaro Goggia, L. Bugliaro Goggia, M. Born, M. Born, M. Fierz, M. Griesemer, M. Leinaas, M. Loss, P.A.M. Dirac, P.A.M. Dirac, R. Howe, R. Jackiw, R. Jost, R. Jost, R. Kubo, R.F. Streater, R.F. Streater, S. Deser, S. Doplicher, S. Doplicher, S. Ferrara, S. Weinberg, S. Weinberg, V. Bach, V. Bach, V. Bach, W. Heisenberg, W. Hunziker, W. Pauli, W. Pauli, W. Pauli, W. Pauli   +67 more
core   +3 more sources

Toughness of Confined Auxetic Foams

Advanced Engineering Materials, EarlyView.
Auxetic (negative Poisson's ratio) materials offer benefits such as impact mitigation, thermal insulation, vibration damping, and reduced shear strain, although their fracture mechanics are largely unexplored. This study investigates damage initiation and propagation in confined re‐entrant auxetic foams from polyurethane via experimental ...
Adrianos E. F. Athanasiadis, Oliver Duncan, Michal K. Budzik, Marcelo A. Dias   +3 more
wiley   +1 more source

Classical Mathematics for a Constructive World

, 2010
Interactive theorem provers based on dependent type theory have the flexibility to support both constructive and classical reasoning. Constructive reasoning is supported natively by dependent type theory and classical reasoning is typically supported by ...
Geuvers, Gonthier, Gödel, Nordström, Rasiowa, RUSSELL O'CONNOR, Thompson, Troelstra, Wadler   +8 more
core   +1 more source