Results 81 to 90 of about 2,583,141 (331)
Word problems: A review of linguistic and numerical factors contributing to their difficulty
Frontiers in Psychology, 2015 Word problems belong to the most difficult and complex problem types that pupils encounter during their elementary-level mathematical development. In the classroom setting, they are often viewed as merely arithmetic tasks; however, recent research shows ...
Gabriella eDaroczy +7 more
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The word problem distinguishes counter languages
, 2006 Counter automata are more powerful versions of finite-state automata where addition and subtraction operations are permitted on a set of n integer registers, called counters.
Cleary, Sean +2 more
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(Un)Decidability Results for Word Equations with Length and Regular Expression Constraints [PDF]
, 2013 We prove several decidability and undecidability results for the satisfiability and validity problems for languages that can express solutions to word equations with length constraints.
Ganesh, Vijay +3 more
core
Advanced Engineering Materials, EarlyView.Plasma‐assisted hybrid friction stir welding of dissimilar AlCu joints employs localized plasma preheating to balance heat input and enhance plastic flow. The optimized process reduces axial force by up to 35%, refines the microstructure, and achieves ≈96% joint efficiency.
Deepak Kumar Yaduwanshi +3 more
wiley +1 more source
Elementary School, 2020 This study aim to: 1) describe the effect of realistic mathematic approach to problem solving abilities in word problems in elementery school students, 2) describe the influence of reading skills in problem solving skills in word problems in elementary ...
Budiharti dan Deri Anggraini
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Advanced Engineering Materials, EarlyView.The results demonstrate a simulation‐driven workflow that applies LSB topology optimization with additive manufacturing constraints to mission‐specific load cases, integrating European Cooperation for Space Standardization compliant verification and manufacturability to develop structurally efficient rover suspension components.
Stelios K. Georgantzinos +11 more
wiley +1 more source
Frontline Learning Research, 2016 Non-routine word problem solving is an essential feature of the mathematical development of elementary school students worldwide. Many students experience difficulties in solving these problems due to erroneous problem comprehension.
Anton Boonen +3 more
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Information Processing Letters, 2016 In this article we provide a new perspective on the word problem of a group by using languages of nested words. These were introduced by Alur and Madhusudan as a way to model programming languages such as HTML. We demonstrate how a class of nested word languages called visibly pushdown can be used to study the word problem of virtually free groups in a
openaire +3 more sources
Advanced Functional Materials, EarlyView.This work demonstrates the successful integration of a phenanthroline‐based 2D COF with MnI catalytic sites into a catholyte‐free membrane‐electrode‐assembly cell for CO2 electroreduction. The crystalline COF actively suppresses Mn⁰–Mn⁰ dimerization, achieving a turnover frequency of 617 h⁻¹ at 2.8 V (full‐cell potential), and enabling stable operation.
Laura Spies +8 more
wiley +1 more source
Advanced Functional Materials, EarlyView.[001]‐oriented Sb2Se3 film with improved crystallinity and adjusted composition is achieved via a new thermal treatment approach consisting of preliminary annealing of the Sb layer before its selenization. The findings of this work demonstrate enhanced charge carriers' transportation, a stable performance, and an improvement of H2 generation from ...
Magno B. Costa +7 more
wiley +1 more source