Results 121 to 130 of about 871,479 (286)
Advanced Functional Materials, EarlyView.Ferroelectric tunnel junction devices based on epitaxial undoped ferroelectric HfO2 films demonstrate stable switching endurance of over 106 switching cycles, low write voltages of ±3 V, 16 measured resistance states, and neuromorphic capability.
Markus Hellenbrand +13 more
wiley +1 more source
Exponential sum-fitting of dwell-time distributions without specifying starting parameters. [PDF]
Biophys J, 2013 Landowne D, Yuan B, Magleby KL.
europepmc +1 more source
The Tsukano conjectures on exponential sums
Osaka Journal of Mathematics, 2020 Let \(p>2\) be a prime, \(\zeta=\exp(2πi/p)\), \(\psi(a)=(ap)\) be the Legendre symbol modular \(p\), and \(\tau(\psi)=\sum_{n=0}^{p-1}\psi(n)\zeta^n\) be the Gauss sum. For polynomials \(P,Q,R\) with integer coefficients, define the Lee-Weintraub sums \[ S[P,Q,R]=-\sum_{k,j\pmod p}\frac{\psi(k)}{(\zeta^{kP(j)}-1)(\zeta^{kQ(j)}-1)(\zeta^{kR(j)}-1)}, \]
openaire +4 more sources
X‐Functionality–Driven Photocatalytic Hydrogen Evolution in 2D 4‐X‐PEA2SnI4 Perovskites
Advanced Functional Materials, EarlyView.We report a water‐based synthesis of 2D 4‐X‐PEA2SnI4 perovskite microcrystals with prominent photocatalytic (PC) activity for H2 production. The synergy between organic functionalization and HI‐derived iodide scavenges holes suppress octahedral distortion, and favor electron accumulation, enabling a PC H2 evolution ∼20 µmol·g−1 and long‐term stability ...
Taeyeon Kim +21 more
wiley +1 more source
Historical Foundation and Practical Guideline for Ferroelectric Switching Kinetic Studies
Advanced Functional Materials, EarlyView.The P and U pulses in the conventional PUND measurements are not identical because of the interplay between switching current and the measurement circuit components. This circuit effect can lead to a shift in polarization transients and misinterpreted physics in the switching kinetics.
Yi Liang, Pat Kezer, John T. Heron
wiley +1 more source
Robust exponential smoothing of multivariate time series. [PDF]
Multivariate time series may contain outliers of different types. In presence of such outliers, applying standard multivariate time series techniques becomes unreliable. A robust version of multivariate exponential smoothing is proposed.
Croux, Christophe +2 more
core
Advances in Sustainable and Wearable Textile Based Soft Robotics
Advanced Functional Materials, EarlyView.This Review examines advances in wearable textile‐based soft robotics, focusing on sustainable materials, integrated sensing, and scalable actuation. It discusses manufacturing and system integration across healthcare, assistive robotics, prosthetics, and human–machine interfaces, and highlights key challenges in circular design, including life‐cycle ...
Zahir Abbas +6 more
wiley +1 more source
Operations on Pythagorean Neutrosophic Fuzzy Matrix
Neutrosophic Sets and SystemsThis article discusses various unique varieties of Pythagorean neutrosophic fuzzy matrices (PNFM). Some fundamental operations such as addition, multiplication, union, intersection, complement, and exponential are discussed.
Surya V, Sophia Porchelvi R
doaj +1 more source
Quick Hidden Layer Size Tuning in ELM for Classification Problems
MendelThe extreme learning machine is a fast neural network with outstanding performance. However, the selection of an appropriate number of hidden nodes is time-consuming, because training must be run for several values, and this is undesirable for a real ...
Audi Albtoush +3 more
doaj +1 more source
On a certain class of exponential sums.
Journal für die reine und angewandte Mathematik (Crelles Journal), 1987 In a recent note [Appendix to J. B. Friedlander and H. Iwaniec, Ann. Math., II. Ser. 121, 319-350 (1985; Zbl 0572.10029)], \textit{B. J. Birch} and \textit{E. Bombieri} consider the following family of exponential sums over finite fields \({\mathbb{F}}_ q\); for \(\alpha_ 1,\alpha_ 2\in {\mathbb{F}}_ q^{\times}\) and \(\psi\) a non-trivial additive ...
openaire +2 more sources