Results 61 to 70 of about 92,095 (302)
IEEE Access, 2019 High-penetration wind power access to grid requires wind turbine generator (WTG) to provide frequency regulation service. Consequently, the frequency dynamics of wind power plants (WPPs) integrated system are changing; thus, it is necessary to ...
Jianfeng Dai +3 more
doaj +1 more source
Exploration of Student Thinking Process in Proving Mathematical Statements
Prisma Sains: Jurnal Pengkajian Ilmu dan Pembelajaran Matematika dan IPA IKIP Mataram, 2020 A mathematical statement is not a theorem until it has been carefully derived from previously proven axioms, definitions and theorems. The proof of a theorem is a logical argument that is given deductively and is often interpreted as a justification for ...
Deni Hamdani +4 more
doaj +1 more source
Lattice‐Matched 2D Template Enables Efficient Cesium Tin Halide Perovskite Solar Cells
Advanced Materials, EarlyView.Lattice‐matched 2D perovskite PEA2CsSn2I7 templates the out‐of‐plane growth of inorganic 3D γ‐CsSnI3 along the (110) plane, forming highly oriented 2D/3D tin halide perovskite heterostructures. With reduced trap states and mitigated δ‐phase impurities, the CsSnI3‐based solar cells achieve a power conversion efficiency of 15.27% and maintain stable ...
Hongzhe Anna Xu +15 more
wiley +1 more source
Essays on Mathematical Geography [PDF]
, 1986 A collection of essays intended to show the range of power in applying pure mathematics to human systems. There are two types of essay: those which employ tranditional mathematical proof, and those which do not.
Arlinghaus, Sandra Lach
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Recursive Program Optimization Through Inductive Synthesis Proof Transformation [PDF]
, 1999 The research described in this paper involved developing transformation techniques which increase the efficiency of the noriginal program, the source, by transforming its synthesis proof into one, the target, which yields a computationally more efficient
Bundy, Alan +5 more
core +1 more source
Fostering Justification: A Case Study of Preservice Teachers, Proof-Related Tasks, and Manipulatives
Journal of Mathematics Education at Teachers College, 2016 Instruction promoting reasoning and proof should be a part of K-12 mathematics teaching. Preservice teachers (PSTs) need mathematics content instruction that helps them construct valid justifications for mathematical notions and develop positive ...
Jonathan D. Bostic
doaj +3 more sources
The Beauty (?) of Mathematical Proofs
, 2019 Mathematicians often use aesthetic vocabulary to describe mathematical proofs: they can be beautiful, elegant, ugly, etc. In recent years, philosophers of mathematics have been asking themselves what these descriptions in fact mean: should we take them literally, as tracking truly aesthetic properties of mathematical proofs, or are these terms being ...
openaire +2 more sources
Advanced Materials, EarlyView.A thermally adaptive plasmonic metasurface, functionalized with poly(N‐isopropylacrylamide) (PNIPAM) and anti‐CD63 antibodies, enables precise, on‐demand capture and release of extracellular vesicles (EVs). Delivering high recovery, improved purity, and intact vesicle structure, the platform offers a versatile, label‐free solution for real‐time EV ...
Beyza Nur Kucuk +7 more
wiley +1 more source
The design of textbooks and their influence on students’ understanding of ‘proof’ in lower secondary school [PDF]
, 2009 In this paper we report on our analysis of textbooks commonly used for teaching students about proof in geometry in lower secondary school in Japan. From our analysis we found that, as expected from the curriculum specification, deductive reasoning is ...
Kunimune, Susumu +2 more
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What Do We Mean by Mathematical Proof? [PDF]
, 2011 Mathematical proof lies at the foundations of mathematics, but there are several notions of what mathematical proof is, or might be. In fact, the idea of mathematical proof continues to evolve. In this article, I review the body of literature that argues
CadwalladerOlsker, Todd +1 more
core +2 more sources