Results 81 to 90 of about 1,082,135 (333)
Advanced Engineering Materials, EarlyView.Do not let thermal drift and instrument artifacts deceive high‐temperature nanoindentation results. We compare classical Oliver–Pharr and automatic image recognition analyses across steels and a Ni alloy to quantify these effects. Accounting for artifacts reveals systematic softening with temperature, while Cr and Ni additions boost resistance ...
Velislava Yonkova +2 more
wiley +1 more source
Accuracy evaluation of GPS observation results processed by discreet Kalman filter
Geodesy and Cartography, 2012 Results processing and accuracy evaluation of GPS and other systems operating in real time by discreet Kalman filter are analysed. Recurrent principle was used for processing observation data accumulating in portions by least squares adjustment.
Jonas Skeivalas
doaj +1 more source
Predicting Atomic Charges in MOFs by Topological Charge Equilibration
Advanced Functional Materials, EarlyView.An atomic charge prediction method is presented that is able to accurately reproduce ab‐initio‐derived reference charges for a large number of metal–organic frameworks. Based on a topological charge equilibration scheme, static charges that fulfill overall neutrality are quickly generated.
Babak Farhadi Jahromi +2 more
wiley +1 more source
Summing Modulo 2 of Stationary Binary Stochastic Processes
IEEE AccessIn the paper, we analyze the properties of the stochastic process obtained as the result of summing modulo 2 without carry of a finite number of stationary binary stochastic processes, some of which do not satisfy the independence condition.
Mieczyslaw Jessa, Jakub Nikonowicz
doaj +1 more source
The analysis of GSM connection systems application for determining spatial coordinates
Geodesy and Cartography, 2012 In the article, the method for determining spatial coordinates in free space, urbanised territories, also inside buildings using GSM connection systems is analysed.
Jonas Skeivalas +2 more
doaj +1 more source
Advanced Functional Materials, EarlyView.We present a fully automated Bayesian optimization (BO) protocol for the parameterization of nonbonded interactions in coarse‐grain CG force fields (BACH). Using experimental thermophysical data, we apply the protocol to a broad range of liquids, spanning linear, branched, and unsaturated hydrocarbons, esters, triglycerides, and water.
Janak Prabhu +3 more
wiley +1 more source
The Structural Extension Spine: Modelling the emergence of algebraic reasoning in early mathematics
African Journal of Teacher Education and DevelopmentBackground: The transition from arithmetic to algebra remains a persistent challenge in early mathematics education. While structural awareness is widely recognised as foundational to this shift, the developmental mechanism through which learners come to
Jacques D. du Plessis
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Advanced Functional Materials, EarlyView.A large number of MoS2 flakes were screened to obtain high‐quality flakes based on optical intensities in R, G, and B channel images. The flakes were classified from Level 1 to 6 based on optical intensities in the R, G, and B channel images. Low‐quality flake exhibited wrinkled, folded, or overlapped features, while high‐quality displayed a neat ...
Sanghyun Lee +11 more
wiley +1 more source
Positive Definite $\ell_1$ Penalized Estimation of Large Covariance Matrices [PDF]
, 2012 The thresholding covariance estimator has nice asymptotic properties for estimating sparse large covariance matrices, but it often has negative eigenvalues when used in real data analysis.
Ma, Shiqian, Xue, Lingzhou, Zou, Hui
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