Results 201 to 210 of about 3,398,742 (244)

Disentangling Bulk and Surface Contributions to Charge and Discharge Fading in High‐Voltage LiCoO2

Advanced Functional Materials, EarlyView.
High‐voltage operation of LiCoO2 accelerates capacity fading through bulk and surface degradation. By introducing a LiTaO3 coating to selectively suppress surface degradation, bulk and surface contributions to charge and discharge fading are decoupled.
Hyungjoon Moon, Sangbin Park, Jaewoo Jung, Seongeun Lee, Chanwoo Jung, Min‐Sik Park, Won‐Sub Yoon   +6 more
wiley   +1 more source

Light‐Induced Field‐Tunneling Synapses in Solution‐Processed Van Der Waals Heterostructures for Scalable, Retina‐Inspired Optical Sensing

Advanced Functional Materials, EarlyView.
A scalable, solution‐processed WSe2/ZrO2‐x van der Waals heterostructure realizes a light‐induced field‐tunneling synapse (LIFTS) that activates exclusively under bright illumination, emulating the photopic adaptation of the human retina at the device level.
Kijeong Nam, Jihyun Kim, Soobeen Ji, In Soo Kim, Sejin Kim, Eungseon Yeon, Do Kyung Hwang, Iva Plutnarová, Zdeněk Sofer, Sang Min Won, Joohoon Kang   +10 more
wiley   +1 more source

Almost periodic sequences [PDF]

Theoretical Computer Science, 2003
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Alexei Semenov
exaly   +4 more sources

Almost periodic random sequences in probability [PDF]

Journal of Mathematical Analysis and Applications, 2007
The authors prove that a discrete version of almost periodic random sequences in probability solves a class of random difference equations.
Jialin Hong
exaly   +3 more sources

Almost Perfect Sequences and Periodic Complementary Sequence Pairs over the 16-QAM Constellation

IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences, 2012
SUMMARY Based on quadriphase perfect sequences and their cyclical shift versions, three families of almost perfect 16-QAM sequences are presented. When one of two time shifts chosen equals half a period of quadriphase sequence employed and another is zero, two of the proposed three sequence families possess the property that their out-of-phase ...
Guixin Xuan, Fanxin Zeng, Zhenyu Zhang   +2 more
exaly   +2 more sources

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On Almost-Periodic Operators in the Spaces of Sequences

Acta Applicandae Mathematica, 2001
The author presents some results concerning the norm and the invertibility of the almost-periodic discrete operators of the form \[ (Ax)(n)=\sum_{m\in Z}A(n,m)x(m)\qquad n\in Z \] acting in spaces of sequences with values in a Banach space \(E\). Among the considered spaces of sequences there are the spaces \[ l^p(E)=\left\{ x=\{ x(n)\} _{n\in Z} \Bigl|
Bruno, Giordano, Pankov, A., Tverdokhleb, Yu.   +2 more
openaire   +1 more source

Almost periodic random sequences in probability

Nonautonomous Dynamical Systems, 2017
Abstract This paper is concerned with almost periodic random sequences in probability. Some basic and fundamental properties of such sequences are established.
exaly   +4 more sources

Recurrent and almost-periodic sequences

Archiv der Mathematik, 1997
A sequence \(g:\mathbb{N}\to\mathbb{C}\) is called almost-periodic if it belongs to the completion \({\mathcal A}^1\) of the \(\mathbb{C}\)-linear space spanned by the sequences \(e_\vartheta\) with \(\vartheta\in\mathbb{R}/ \mathbb{Z}\), where \(e_\vartheta(n) =e^{2\pi i\vartheta n}\) for \(n\in\mathbb{N}\), under the semi-norm \[ |g|_1= \limsup_{x\to\
openaire   +2 more sources

Almost periodic sequence solutions of a discrete Lotka–Volterra competitive system with feedback control

Nonlinear Analysis: Real World Applications, 2009
The authors study the existence and uniqueness of almost periodic solutions for the following discrete Lotka-Volterra competitive system with feedback control \[ \begin{aligned} x_1(n+1) &= x_1(n)\exp\{r_1(n)(1- x_1(n)K^{-1}_1(n)- \mu_2(n)x_2(n)- b_1(n)u_1(n))\},\\ x_2(n+ 1) &= x_2(n)\exp\{r_2(n)(1- x_2(n)K^{-1}_2(n)- \mu_1(n)x_1(n)- b_2(n) u_2(n))\},\\
Xiaoxing Chen
exaly   +3 more sources

Empirical determination of the frequencies of an almost periodic sequence

Proceedings of 8th Workshop on Statistical Signal and Array Processing, 2002
This note is concerned with the problem of determination of the countable set /spl Lambda/={/spl lambda//sub 1/, /spl lambda//sub 2/, ...} of frequencies belonging to an almost periodic sequence by methods in which a finite number of frequencies {/spl lambda//sub 1//sup (n)/, /spl lambda//sub 2//sup (n)/, ..., L(K/sub n/)/sup (n)/}=/spl Lambda//sub n ...
D. Dehay, H.L. Hurd
openaire   +1 more source