Results 71 to 80 of about 92,076 (301)

Flexible Chemiresistive Chitosan‐Glycerol Sensors on Laser‐Induced Graphene Electrodes for Room‐Temperature Ammonia Detection

Advanced Materials Technologies, EarlyView.
Flexible Chitosan‐glycerol sensor integrated with porous laser‐induced graphene (LIG) electrodes enable room‐temperature chemiresistive detection of ammonia (NH3) and proof‐of‐concept detection of fish spoilage. ABSTRACT We report a metal‐free sensor platform combining laser induced graphene (LIG) electrodes with drop‐deposited, glycerol‐plasticized ...
Mintesinot Tamiru Mengistu, Richard Murray, Cara‐Lena Nies, Cathal Larrigy, Martina Piletti, Jahidul Islam, Daniela Iacopino, Eileen Hurley, Michael Nolan, Aidan J. Quinn   +9 more
wiley   +1 more source

Proof in Mathematics Education, 1980-2020: An Overview

Journal of Educational Research in Mathematics, 2020
This paper looks at the evolution of ideas on the role of proof in mathematics education from 1980 to 2020, examining in particular the contributions of both theoretical and empirical research to the teaching of mathematical proof.
Gila Hanna, Christine Knipping
doaj   +1 more source

Proof in dynamic geometry contexts

, 1998
Proof lies at the heart of mathematics yet we know from research in mathematics education that proof is an elusive concept for many mathematics students.
Hoyles, Celia, Jones, Keith
core  

A Proof of the Isoenergetic KAM-Theorem from the “Ordinary” One [PDF]

, 1991
A proof is given of the isoenergetic KAM-theorem for Hamiltonian systems, using the “ordinary” KAM-theorem and a transversality argument.
Broer, H.W., Broer, H.W.,, Broer, H.W.; id_orcid, Broer, H.W, Huitema, G.B, Huitema, G.B., Huitema, G.B.,   +6 more
core   +1 more source

Galinstan Liquid Metal/Polyurethane Composite as a Multifunctional Stretchable Electrode and Piezoresistive Strain Sensor With Minimal Drift

Advanced Materials Technologies, EarlyView.
Liquid metal additives are processed in elastomer host resulting in highly conductive and stretchable composites. The material functions as a piezoresistive sensor with minimal drift, low stiffness, and enhanced operating range. The film can replace wires to charge a mobile phone at ∼350% strain and monitors bodily motion in real‐time via a portable ...
Patryk Wojciak, Neeraj Kumar, Toby Hallam, Shayan Seyedin   +3 more
wiley   +1 more source

Developing pedagogic approaches for proof: learning from teaching in the East and West

, 2009
In our work we focus on learning from the teaching of proof in geometry at the lower secondary school level across countries in the East and in the West.
Matsumoto, Shinichiro, Kumakura, Hiroyuki, Kunimune, Susumu, Ding, Liping, Jones, Keith, Fujita, Taro   +5 more
core  

THE I-CON MODEL IN CONSTRUCTING MATHEMATICAL PROOF

Jurnal Eduscience
Purpose-This research aims to analyze the role of the I-CON model in constructing mathematical proofs. Methodology-The research used is qualitative with a grounded theory approach.
Abdul Mujib, Firmansyah Firmansyah, Siti Shara Siagian, Devi Mathelinea   +3 more
doaj   +1 more source

Chip‐Integrated Metasurface‐GaAsSb Nanowire Array Photodetectors for Single‐Pixel Polarimetric Imaging

Advanced Optical Materials, EarlyView.
A 2×2 multiplexed GaAsSb nanowire photodetector array integrated with L‐shaped metasurfaces is developed for miniaturized infrared polarimetry. Leveraging non‐radiating anapole states that facilitate near‐field enhancement, the device demonstrates strong polarization selectivity at 835 nm.
Longsibo Huang, Ziyuan Li, Yitao Yang, Yang Yu, Lei Xu, Li Li, Songqin Zhang, Han Wang, Wenwu Pan, Chaohao Chen, Weiqi Jin, Wen Lei, Lorenzo Faraone, Chennupati Jagadish, Lan Fu   +14 more
wiley   +1 more source

Enacting Reasoning-and-Proving in Secondary Mathematics Classrooms through Tasks [PDF]

, 2013
Proof is the mathematical way of convincing oneself and others of the truth of a claim for all cases in the domain under consideration. As such, reasoning-and-proving is a crucial, formative practice for all students in kindergarten through twelfth ...
Switala, Michelle S
core  

Experiments with proof plans for induction

, 1991
The technique of proof plans, is outlined. This technique is used to guideautomatic inference in order to avoid a combinatorial explosion. Empirical research to test this technique in the domain of theorem proving by mathematical induction is described ...
Bundy, Alan, Hesketh, J., van Harmelen, F.A.H., Smaill, A, Smaill, A., Hesketh, J, van Harmelen, F., Bundy, A., van Harmelen, F.A.H.; id_orcid, Harmelen, F.A.H. van   +9 more
core   +1 more source