Results 201 to 210 of about 1,424,186 (337)

Exponential sums over integers without large prime divisors

We obtain a new bound on exponential sums over integers without large prime divisors, improving that of Fouvry and Tenenbaum (1991). The improvement is based on exploiting the trilinear structure of certain exponential sums, appearing in the argument. We
Shparlinski, Igor E.
core  

Parameter estimation for bivariate exponential sums

International Conference on Sampling Theory and Applications, 2015
Benedikt Diederichs, A. Iske
semanticscholar   +1 more source

Phase Evolution Kinetics in Additive‐Free 19.75% Organic Photovoltaics Empowered by Solvent Vapor Annealing

Advanced Functional Materials, EarlyView.
Solvent vapor annealing enables kinetic control of additive‐free morphology in organic solar cells. Selective plasticization of acceptor forms an optimal fibrillar network, boosting efficiency to 19.06% (binary) and 19.75% (ternary), with ultrafast exciton dissociation and reduced recombination.
Jie Lv, Jieni Chen, Cenqi Yan, Patrick W. K. Fong, Jingjing Zhao, Daming Zheng, DingQin Hu, Xiaoman Ding, Xiaokang Sun, Chuanlin Gao, Guangye Zhang, Qianguang Yang, Can Zhu, Pei Cheng, Shirong Lu, Zhipeng Kan, Zhiwei Ren, Guangliu Ran, Wenkai Zhang, Hanlin Hu, Gang Li   +20 more
wiley   +1 more source

Some Results on Cumulative Residual Inaccuracy Measure of k-Record Values. [PDF]

Entropy (Basel)
Goel R, Kumar V, Vehale S, Scott TC.
europepmc   +1 more source

Upper Bounds for the Derivative of Exponential Sums

, 1999
The equality is shown, where the supremum is taken for all exponential sums p of the form p(t)=a 0+ #R, with nonnegative exponents # j . The inequalities are also proved for all exponential sums of the above form
Peter Borwein, Tamás Erdélyi
core  

ℓ-adic GKZ hypergeometric sheaves and exponential sums

, 2016
Lei Fu
semanticscholar   +1 more source

Pickering‐Engineered Microparticles for Magnetically Guided Motion and Light‐Triggered Catalysis

Advanced Functional Materials, EarlyView.
Magnetically responsive wax microparticles stabilized by hematite cubes through the Pickering emulsification strategy are developed, showing controlled size, motion, and light‐activated catalytic activity. Annealing under a magnetic field enhances their mobility and steering.
Chiara Ferlito, Ludovico Guercio, Giuseppe Cavallaro, Giuseppe Lazzara, Theodore Hueckel, Lorenzo Lisuzzo, Stefano Sacanna   +6 more
wiley   +1 more source

A Review: Construction of Statistical Distributions. [PDF]

Entropy (Basel)
Fang KT, Lin YX, Deng YH.
europepmc   +1 more source

ON THE DISTRIBUTION OF EXPONENTIAL SUMS

, 2008
We discuss three problems of the following kind: given a set A ⊆ Fp of n: = |A | residues modulo a prime p, how are the absolute values |SA(z) | of the corresponding exponential sums distributed in the interval [0,n ...
Sergei V. Konyagin, Vsevolod F. Lev
core  

Enhancement of Dielectric Breakdown Strength and Recoverable Energy Density in Three‐Dimensional Heterointerfaces on BaTiO3–PbZrO3–PbTiO3 Films via Room‐Temperature Nano‐Clustering

Advanced Functional Materials, EarlyView.
A room‐temperature aerosol deposition process yields multiphase nano‐clustered dielectric capacitors containing discrete BaTiO3, PbZrO3, and PbTiO3 crystals. This architecture creates three‐dimensional heterointerfaces that induce interfacial charge trapping and effectively inhibit breakdown propagation.
Hyunseok Song, Ke Xu, Donggeon Baek, Dayeong Hur, Minjae Kim, Hyun‐Cheol Song, Dae‐Yong Jeong, Houbing Huang, Jungho Ryu   +8 more
wiley   +1 more source