Results 81 to 90 of about 44,196 (310)
Counterion Dependent Side‐Chain Relaxation Stiffens a Chemically Doped Thienothiophene Copolymer
Advanced Functional Materials, EarlyView.Oxidation of a thienothiophene copolymer, p(g3TT‐T2), via different doping strategies and dopant molecules resulted in materials with similar oxidation levels and a high electrical conductivity of ≈100 S cm−1. However, mechanical properties varied significantly, with sub‐glass transition temperatures and elastic moduli spanning from –44°C to –3°C and ...
Mariavittoria Craighero +12 more
wiley +1 more source
Polynomial splines and data approximation
, 2003 The problem of data approximation is of great interest. There are a lot of approaches to solve this problem. One of them is a polynomial spline approximation. In this paper we propose a new algorithm for polynomial spline approximation based on nonsmooth
Sukhorukova, Nadezda
core +2 more sources
Advanced Materials, EarlyView.AI‐Assisted Workflow for (Scanning) Transmission Electron Microscopy: From Data Analysis Automation to Materials Knowledge Unveiling. Abstract (Scanning) transmission electron microscopy ((S)TEM) has significantly advanced materials science but faces challenges in correlating precise atomic structure information with the functional properties of ...
Marc Botifoll +19 more
wiley +1 more source
Approximation of the Summation-Integral-Type q-Szász-Mirakjan Operators
Abstract and Applied Analysis, 2012 We introduce summation-integral-type q-Szász-Mirakjan operators and study approximation properties of these operators. We establish local approximation theorem. We give weighted approximation theorem.
Mei-Ying Ren, Xiao-Ming Zeng
doaj +1 more source
Advanced Materials, EarlyView.Magnetic doping of the topological insulator Bi2Te3 with erbium adatoms induces out‐of‐plane magnetism and breaks time‐reversal symmetry, opening a Dirac gap and driving a Fermi surface transition from hexagonal to star‐of‐David geometry. Microscopy, spectroscopy, and magnetic dichroism reveal atomically controlled magnetic interactions that tailor the
Beatriz Muñiz Cano +18 more
wiley +1 more source
The Weierstrass theorem on polynomial approximation [PDF]
Mathematica Bohemica, 2005 Summary: A simple proof of the Weierstrass approximation theorem on a function continuous on a compact interval of the real line is given. The proof is elementary in the sense that it does not use uniform continuity.
openaire +2 more sources
Universal Conductance Fluctuations in Quantum Anomalous Hall Insulators
Advanced Materials, EarlyView.Universal conductance fluctuations are observed in mesoscopic quantum anomalous Hall insulators. Two distinct fluctuation patterns are identified, arising from different interference processes of bulk and chiral edge states, respectively. These findings unveil rich quantum interference phenomena in quantum anomalous Hall insulators and provide insights
Peng Deng +11 more
wiley +1 more source
Polynomial Approximation for Observer Design of Nonlinear Systems
IEEE AccessNonlinear systems are prevalent in many areas, like financial, biological, and engineering. The modeling and control of systems that fall into these areas traditionally require an explicit mathematical model to be effective.
Gabriel Costa Leite +3 more
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Multivariate Polynomial Approximation of Powers of the Euclidean Distance Function
, 2007 The polynomial approximation behaviour of the class of functions $F_s: {\bf R}^2 \backslash \{ (x_0, y_0) \} \to {\bf R}, \quad F_s(x,y) = ( (x-x_0)^2 + (y-y_0)^2 )^{-s},\quad s \in (0, \infty),$ is studied in [Bra01].
Kraus, Christiane
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An efficient sparse regularity concept [PDF]
, 2009 Let A be a 0/1 matrix of size m×n, and let p be the density of A (i.e., the number of ones divided by m · n). We show that A can be approximated in the cut norm within ε · mnp by a sum of cut matrices (of rank 1), where the number of summands is ...
Cooper, Colin +8 more
core +1 more source