Results 31 to 40 of about 17,598 (258)
Performance of Prestressed Concrete Hunched Beams with Multi-Quadrilaterals Openings
Civil and Environmental Engineering, 2022 A long-span Prestressed Concrete Hunched Beam with Multi-Quadrilateral Opening has been developed as an alternative to steel structural elements. An experimental program was created and evaluated utilizing a single mid-span monotonic static load on ...
Al-Hilali Amjad Majeed +1 more
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On moduli of rings and quadrilaterals: algorithms and experiments
, 2009 Moduli of rings and quadrilaterals are frequently applied in geometric function theory, see e.g. the Handbook by K\"uhnau. Yet their exact values are known only in a few special cases.
Antti Rasila +3 more
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The CMB Bispectrum, Trispectrum, non-Gaussianity, and the Cramer-Rao Bound [PDF]
, 2010 Minimum-variance estimators for the parameter fnl that quantifies local-model non-Gaussianity can be constructed from the cosmic microwave background (CMB) bispectrum (three-point function) and also from the trispectrum (four-point function).
Heavens, Alan +2 more
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Does any convex quadrilateral have circumscribed ellipses?
Open Mathematics, 2017 The past decades have witnessed several well-known beautiful conclusions on four con-cyclic points. With highly promising research value, we profoundly studied circumscribed ellipses of convex quadrilaterals in this paper.
Li Jia Hui +3 more
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Geometry: A Medium to Facilitate Geometric Reasoning Among Sixth Grade African-American Males
Georgia Educational Researcher, 2014 In this article, the author describes how a curricular unit that provided opportunities for active engagement and participation was used to support the geometric reasoning of sixth grade African American (AA) male students.
Olufunke Adefope
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A domain decomposition method for approximating the conformal modules of long quadrilaterals [PDF]
, 1991 This paper is concerned with the study of a domain decomposition method for approximating the conformal modules of long quadrilaterals. The method has been studied already by us and also by D Gaier and W K Hayman, but only in connection with a special ...
Papamichael, N, Stylianopoulos, N S
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Advanced 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
Edumatica: Jurnal Pendidikan MatematikaThis study investigated the geometric thinking levels of eighth-grade students in a Papuan junior high school, using the van Hiele theoretical framework, with a focus on their understanding of quadrilaterals. The research addressed common misconceptions
Pitriana Tandililing +3 more
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Advanced Engineering Materials, EarlyView.High‐frequency (HF) welding of steel is limited by oxide inclusions that degrade weld quality. This study demonstrates, for the first time, the integration of a nonthermal Ar/H2 dielectric barrier discharge (DBD) plasma jet into HF welding. Local plasma treatment provides effective shielding and in‐situ oxide reduction, resulting in markedly fewer and ...
Viktor Udachin +4 more
wiley +1 more source
Educational Software for the Teaching and Learning of Quadrilaterals Generated from a Programming Language and the Dabeja Method (Invited Paper) [PDF]
Journal of Systemics, Cybernetics and Informatics, 2016 The teaching of math is a process that starts from an early age especially the teaching of geometry through which different representations, constructions, axioms, and theorems among others helps develop the formal thoughts of individuals.
Daniel Bejarano Segura +1 more
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