Results 141 to 150 of about 1,088,621 (289)
Weighted uniform approximation on the semiaxis by rational operators
Journal of Inequalities and Applications, 1999 We construct rational operators for the weighted uniform approximation on the semiaxis. Direct and converse results are shown which are not possible for polynomials.
Mastroianni G +2 more
doaj
Water Organization and Hydration‐Dependent Hydroxide Transport in Anion Exchange Membranes (AEM)
Advanced Functional Materials, EarlyView.Hydroxide transport in anion exchange membranes is governed by the organization of water within the polymer rather than by hydration alone. A hydration‐window framework is presented to unify transport, swelling, and mechanical stability, providing guidance for designing durable membranes for fuel cells and other hydroxide‐based electrochemical ...
Phumlani F. Msomi
wiley +1 more source
A Contribution to Rational Approximation [PDF]
Journal of the London Mathematical Society, 1976 openaire +1 more source
Sparse interpolation and rational approximation
, 2016 Sparse interpolation or exponential analysis, is widely used and in quite different applications and areas of science and engineering. Therefore researchers are often not aware of similar studies going on in another field.
Lee, Wen-shin +2 more
core
Kinetics‐Controlled Architecture of Binder‐Free Organic Electrodes for Enhanced Ion Transport
Advanced Functional Materials, EarlyView.Pulse reverse electrodeposition controls nucleation and growth to create hierarchically porous Py‐derived oligomeric electrodes with enhanced ionic accessibility and reduced transport resistance. The resulting binder‐free architectures translate these transport advantages into practical sodium‐storage functionality.
Satendra Kumar +1 more
wiley +1 more source
Improved initial approximation for errors-in-variables system identification
Errors-in-variables system identification can be posed and solved as a Hankel structured low-rank approximation problem. In this paper different estimates based on suboptimal low-rank approximations are considered.
Usevich, Konstantin
core +1 more source
Donor‐Engineered Chiral Indium–Salen Complexes for Tunable Circularly Polarized Luminescence
Advanced Functional Materials, EarlyView.Chiral indium–salen complexes bearing electronically and structurally diverse donor substituents are presented as modular main‐group luminophores exhibiting tunable blue‐to‐green circularly polarized luminescence. Donor engineering systematically controls frontier‐orbital distribution, intraligand charge transfer, and excited‐state relaxation ...
Haein Kim +14 more
wiley +1 more source
On Rational Bubbles and Fat Tails [PDF]
This paper addresses the statistical properties of time series driven by rational bubbles a la Blanchard and Watson (1982). Using insights on the behavior of multiplicative stochastic processes, we demonstrate that the tails of the unconditional ...
Didier Sornette, Thomas Lux
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