Results 61 to 70 of about 49,024 (304)
Advanced Engineering Materials, EarlyView.Identified through the use of statistical design of experiments and metallographic investigation, this study exposes the stochastic origins of intergranular cracks in blown powder laser beam directed energy deposition additive manufacturing of pure molybdenum. It further demonstrates a successful crack mitigation approach with direct correlation to the
Nathaniel J. Lies +2 more
wiley +1 more source
Advanced Engineering Materials, EarlyView.A novel workflow for investigating hydride vapor phase epitaxy for GaN bulk crystal growth is proposed. It combines Design of experiments (DoE) with physical simulations of mass transport and crystal growth kinetics, serving as an intermediate step between DoE and experiments.
J. Tomkovič +7 more
wiley +1 more source
, 2023 Kvadratna forma je homogeni polinom drugog stupnja od n varijabli, gdje je n ∈ N. U ovom radu bavit ćemo se kvadratnim formama za koje je n = 2 i n = 3, tj. binarnim i ternarnim kvadratnim formama. Najprije ćemo uvesti pojam kvadratnih formi te ćemo se
Vomš, Martina
core +1 more source
Hyers-Ulam stability of quadratic forms in 2-normed spaces
Demonstratio Mathematica, 2019 In this paper, we obtain Hyers-Ulam stability of the functional ...
Park Won-Gil, Bae Jae-Hyeong
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Advanced Engineering Materials, EarlyView.Coarse‐grained (left) and atomistic (right) models of the shape memory polymer ESTANE ETE 75DT3 are shown schematically. The two representations bridge molecular detail and mesoscopic description. Both models capture shape memory behavior, linking segmental mobility and conformational relaxation of anisotropic chains to macroscopic recovery, and ...
Fathollah Varnik
wiley +1 more source
Identification and signatures based on NP-hard problems of indefinite quadratic forms
Journal of Mathematical Cryptology, 2008 We prove NP-hardness of equivalence and representation problems of quadratic forms under probabilistic reductions, in particular for indefinite, ternary quadratic forms with integer coefficients.
Hartung Rupert J., Schnorr Claus-Peter
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Econometrics, 2018 A standard test for weak instruments compares the first-stage F-statistic to a table of critical values obtained by Stock and Yogo (2005) using simulations. We derive a closed-form solution for the expectation from which these critical values are derived,
Christopher L. Skeels, Frank Windmeijer
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Some Results on the Distribution of Quadratic Forms in Normal Variables [PDF]
The Egyptian Statistical Journal, 1959 The distributions and probability integrals of some quadratic forms applied in testing the null hypothesis (H₀) in the analysis of variance are reviewed.
S. Abd El-Aty
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PRIME-UNIVERSAL DIAGONAL QUADRATIC FORMS
, 2021 A (positive definite and integral) quadratic form is said to be prime-universal if it represents all primes. Recently, Doyle and Williams ['Prime-universal quadratic forms ax(2) + by(2) + cz(2) and ax(2) + by(2) + cz(2) + dw(2)', Bull. Aust. Math.
오병권 +4 more
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Advanced Engineering Materials, EarlyView.This work studies the anisotropic behavior of circular notched tensile specimens of Ni‐base superalloy single crystals during high‐temperature tensile creep along [001], [110], and [111]. Correlative scale‐bridging imaging of specimens reveals early rupture along [110] because 1) plastic deformation proceeds faster at notch center; 2) more (brittle ...
Leonardo Agudo Jácome +6 more
wiley +1 more source