Results 101 to 110 of about 2,990,829 (343)

Self‐Assembled Heterosymmetric Structure with Tunable Polarization Optics for Reversible Matrix Encryption

Advanced Functional Materials, EarlyView.
Sustainable films with heterosymmetric structures, harmoniously integrating symmetry and asymmetry, are fabricated using cellulose nanocrystals and hydrophilic nanolignin via evaporation‐induced self‐assembly, which exhibit excellent multiple polarization optical properties.
Qun Song, Xintong Meng, Caoxing Huang, Mingcong Xu, Tao Chen, Ziwei Zhou, Philipp Vana, Kai Zhang   +7 more
wiley   +1 more source

Locking Metastable Topological Domains in Nematic Liquid Crystal Pi Cells

Advanced Functional Materials, EarlyView.
Selective photopolymerization in the presence of a controlled voltage defines permanent director walls that lock‐in metastable bend and twist configurations within nematic liquid crystal Pi cells. Q‐tensor simulations corroborate the experiments, demonstrating the topological state stabilization.
Adithya Pradeep, Urban Mur, Junseok Ma, Nathan Spiller, Yihan Jin, Waqas Kamal, Steve J. Elston, Stephen M. Morris   +7 more
wiley   +1 more source

Exploring the role of spatial ability in the mental representation of word problems in mathematics

Frontiers in Education
Problem solving is important to many activities, both in a learning context and in everyday tasks. We can be challenged to solve what later turn out to be very simple problems.
Gavin Duffy, Sheryl Sorby, Brian Bowe
doaj   +1 more source

An educational proposal: using the Geogebra software in the rotation of complex vectors

Amazônia, 2014
This article presents an educational proposal accomplished in a higher education class in the Undergraduate Mathematics, in the discipline Complex Variables, about the content of complex numbers and their geometric representation on the Argand-Gauss ...
Lopes Agner Bitencourt, Paulo Roberto Vargas, Vera Lucia Felicetti   +2 more
doaj   +1 more source

SMaRT Stacking: A Methodology to Produce Optimally Layered EMI Shields with Maximal Green Index Using Fused Deposition Modeling

Advanced Functional Materials, EarlyView.
Electromagnetic interference (EMI) shields consisting of polylactic acid (PLA) in layers with different concentrations of multiwalled carbon nanotubes (MWCNT) are produced using additive manufacturing. The permittivity function of layers with different filler concentrations is learned using data of homogeneous and randomly ordered shields.
Stijn De Smedt, Brecht Evens, Pramod Ravichandran, Panagiotis Patrinos, Frederik Van Loock, Ruth Cardinaels   +5 more
wiley   +1 more source

An analysis of the content of geometric transformations in High School textbooks

Educação Matemática Debate, 2020
This article presents an analysis of the content of geometric transformations in three collections of mathematics textbooks for high school selected by the last Programa Nacional do Livro Didático (PNLD).
Paulo Henrique Souza Nakamura, Vinícius Pazuch   +1 more
doaj   +1 more source

An Ultra‐Robust Memristor Based on Vertically Aligned Nanocomposite with Highly Defective Vertical Channels for Neuromorphic Computing

Advanced Functional Materials, EarlyView.
An ultra‐robust memristor based on SrTiO3‐CeO2 (S‐C) vertically aligned nanocomposite (VAN) achieving exceptional endurance of 1012 switching cycles via interface engineering. Artificial neural networks (ANNs) integrated with S‐C VAN memristors exhibit high training accuracy across multiple datasets.
Zedong Hu, Hongyi Dou, Jeremy B. Gan, Cun Li, Xuanyu Sheng, Juanjuan Lu, Abhijeet Choudhury, Jialong Huang, Yizhi Zhang, Zhongxia Shang, Ye Cao, Xinghang Zhang, Haiyan Wang   +12 more
wiley   +1 more source

Batik Ratu Banten in an Ethnomathematics Lens: Historical Value and Mathematical Value

Jurnal Pendidikan Matematika (JPM)
Mathematics is a basic science that is very necessary in daily activities, and contributes to the advancement of science and technology. In addition to the functional aspect, mathematics also has an aesthetic side that can be combined with cultural ...
Vidya Ayuningtyas, Yuke Andriani, Sulistiawati, Destri Astrianingsih, Anggi Rahmani   +4 more
doaj   +1 more source

Constructing mathematical meanings with digital tools: design, implementation and analysis of a teaching activity in a distance education context

Interaction Design and Architecture(s), 2020
This paper presents and analyses a teaching experiment, carried out with five 12thgrade students, in a distance education context during the pandemic, in May 2020.
Eleonora Faggiano, Federica Mennuni
doaj   +1 more source

Design and Applications of Multi‐Frequency Programmable Metamaterials for Adaptive Stealth

Advanced Functional Materials, EarlyView.
This article provides a comprehensive overview of metamaterials, including their fundamental principles, properties, synthesis techniques, and applications in stealth, as well as their challenges and future prospects. It covers topics that are more advanced than those typically discussed in existing review articles, while still being closely connected ...
Jonathan Tersur Orasugh, Ankita Mohanty, Amit Malakar, Suryasarathi Bose, Suprakas Sinha Ray   +4 more
wiley   +1 more source