Results 41 to 50 of about 182,939 (318)

Analisis Persepsi Mahasiswa Program Studi Matematika dalam Pembelajaran Online di Masa Pandemi Covid-19

open access: yesArithmetic, 2020
The objectives of this study were to: (1) describe the perceptions of students in the Mathematics Study Program of the Faculty of Science and Technology, Purwokerto University of Nahdlatul Ulama (UNU) on learning interactions between students and ...
Nur'aini Muhassanah   +2 more
doaj   +1 more source

Proses Berpikir Aljabar Berdasarkan Level Kognitif Mahasiswa

open access: yesArithmetic, 2023
Algebraic thinking skills need to be developed through learning mathematics, this is necessary to improve understanding of algebraic concepts. The ability to generalize experiences about numbers and calculations is a component of algebraic thinking ...
Arie Purwa Kusuma   +2 more
doaj   +1 more source

Hopfield Neural Networks for Online Constrained Parameter Estimation With Time‐Varying Dynamics and Disturbances

open access: yesInternational Journal of Adaptive Control and Signal Processing, EarlyView.
This paper proposes two projector‐based Hopfield neural network (HNN) estimators for online, constrained parameter estimation under time‐varying data, additive disturbances, and slowly drifting physical parameters. The first is a constraint‐aware HNN that enforces linear equalities and inequalities (via slack neurons) and continuously tracks the ...
Miguel Pedro Silva
wiley   +1 more source

Mechanochemical Synthesis and Characterization of Nanostructured ErB4 and NdB4 Rare‐Earth Tetraborides

open access: yesAdvanced Engineering Materials, Volume 27, Issue 6, March 2025.
ErB4 and NdB4 nanostructured powders are produced by mechanochemical synthesis. 5 h mechanical alloying and 4 M HCl acid leaching are used in the production. ErB4 and NdB4 powders exhibit maximum magnetization of 0.4726 emu g−1 accompanied with an antiferromagnetic‐to‐paramagnetic phase transition at about TN = 18 K and 0.132 emu g−1 with a maximum at ...
Burçak Boztemur   +5 more
wiley   +1 more source

Pengembangan E-Modul Matematika Berbasis Matematika Realistik Bernilai Budaya Kediri pada Materi Perbandingan

open access: yesArithmetic, 2023
Based on the results of observations, the activeness of the Comparative Mathematics learning process in class VII E MTsN 2 Kediri City is still relatively low. This is because the teaching materials used are only printed teaching materials.
Zenik Nurfadilah   +2 more
doaj   +1 more source

Manufacturing Continuous Fiber‐Reinforced Printing Filaments: Development of a Post‐Consolidation Unit

open access: yesAdvanced Engineering Materials, EarlyView.
A novel, temperature‐controlled post‐consolidation unit is developed to test its potential to improve the melt impregnation process used to manufacture continuous fiber‐reinforced filaments for additive manufacturing of high‐performance thermoplastics.
Daniel Beermann   +2 more
wiley   +1 more source

Unidirectional Tape‐Based Composites from Hemp and Pineapple Leaf Fiber: Mechanical Performance in Conventional and Bio‐Based Matrices

open access: yesAdvanced Engineering Materials, EarlyView.
The study investigates novel semi‐finished products made of unidirectionally arranged hemp or pineapple leaf fiber‐reinforced composites produced from different matrices. The materials are analyzed in terms of their mechanical and interfacial properties and void content.
Nina Graupner   +22 more
wiley   +1 more source

Dismal Arithmetic

open access: yes, 2011
33 pages, 15 tables, 2 figures.
Applegate, David   +2 more
openaire   +3 more sources

Four‐Point Bending Tests at High Temperatures on Commercial MgO‐C Refractory Bricks with and Without Recyclate Considering Different Carbon Contents

open access: yesAdvanced Engineering Materials, EarlyView.
Four‐point bending tests are conducted in an argon atmosphere on commercial MgO‐C brick grades with and without MgO‐C recyclate from room temperature up to 1300 °C. No detrimental effect of the MgO‐C recyclates on bending strength is found. Instead, a decisive influence of the total carbon content is observed, with lower total carbon contents ...
Alexander Schramm   +5 more
wiley   +1 more source

Arithmetics, Interrupted

open access: yesJournal of Humanistic Mathematics, 2021
I share some of my adventures in mathematical research and homeschooling in the time of COVID-19.
openaire   +2 more sources

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