Results 101 to 110 of about 384,790 (275)

An exponential smoothing method application to restoring lost data on electric power technical record-keeping in industrial enterprises

Electrical engineering & Electromechanics, 2014
The paper studies in detail a problem of restoring single data of electric power technical record-keeping systems by means of exponential smoothing. A hypothesis of efficient finding the optimal value of smoothing constant α in the range of 0 < α < 2 is ...
Ya.S. Bederak
doaj  

Omega from the skewness of the cosmic velocity divergence

, 1994
We propose a method for measuring the cosmological density parameter $\Omega$ from the statistics of the divergence field, $\theta \equiv H^{-1} \div v$, the divergence of peculiar velocity, expressed in units of the Hubble constant, $H \equiv 100 h km/s/
Bernardeau, F., bouchet, F. R., Dekel, A., Juszkiewicz, R.   +3 more
core   +1 more source

Unlocking Ultra‐Long Cycle Stability of Li Metal Electrode by Separators Modified by Porous Red Phosphorus Nanosheets

Advanced Functional Materials, EarlyView.
Coating the standard polypropylene separator with a porous red phosphorous nanosheet greatly improves cycling performance in Li electrode cells. The phosphorus‐based surface chemistry deactivates electrolyte solvent decomposition and enhances the cleavage of F‐containing salt, resulting in an inorganic‐dominated electrolyte interphase (SEI) composition
Jiangpeng Wang, Mingzi Sun, Feng Lang, Zhijun Cai, Xitao Hu, Yao Gao, Chao Lin, Xueqiang Zhang, Bolong Huang, Quan Li   +9 more
wiley   +1 more source

A Power Smoothing Control Strategy and Optimized Allocation of Battery Capacity Based on Hybrid Storage Energy Technology

Energies, 2012
Wind power parallel operation is an effective way to realize the large scale use of wind power, but the fluctuations of power output from wind power units may have great influence on power quality, hence a new method of power smoothing and capacity ...
Yong Li, Xiangjun Li, Fang Chen, Xiwang Cui, Xiaojuan Han   +4 more
doaj   +1 more source

Optimal HP filtering for South Africa [PDF]

Among the various methods used to identify the business cycle from aggregate data, the Hodrick-Prescott filter has become an industry standard – it ‘identifies’ the business cycle by removing low-frequency information, thereby smoothing the data.
Leon du Toit
core  

Genus statistics using the Delaunay tessellation field estimation method: (I) tests with the Millennium Simulation and the SDSS DR7

, 2010
We study the topology of cosmic large-scale structure through the genus statistics, using galaxy catalogues generated from the Millennium Simulation and observational data from the latest Sloan Digital Sky Survey Data Release (SDSS DR7).
Abazajian, Blanton, Blanton, Choi, Choi, Dave, Delaunay, Dunkley, Gott, Gott, Hikage, Hikage, Illian, Liu, Mecke, Monaghan, Moore, Okabe, Park, Park, Peebles, Protogeros, Schaap, Volker Springel, Xiaohu Yang, Yang, York, Youcai Zhang   +27 more
core   +1 more source

Best constants in some operator smoothness estimates

Journal of Functional Analysis, 1992
The author provides a short proof of the inequality \[ \int_{-\infty}^ \infty \|(1+ x^ 2)^{- 1/2} (1-\Delta)^{1/4} e^{it\Delta} u\|^ 2 dt \leq C\| u\|^ 2 \] with explicit (essentially exact) values for \(C\) [cf. \textit{M. Ben-Artzi} and \textit{S. Klainerman}, Regularity and decay of evolution equations, preprint and \textit{T.
openaire   +2 more sources

Computing Lyapunov constants for random recurrences with smooth coefficients

Journal of Computational and Applied Mathematics, 2001
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Wright, Thomas G, Trefethen, Lloyd N
openaire   +1 more source

Copper‐based Materials for Photo and Electrocatalytic Process: Advancing Renewable Energy and Environmental Applications

Advanced Functional Materials, EarlyView.
Cu‐based catalysts as a cornerstone in advancing sustainable energy technologies are fully reviewed in this manuscript, highlighting their potential in photo‐ and electrocatalysis. It includes metallic copper, copper oxides, copper sulfides, copper halide perovskites, copper‐based metal–organic frameworks (MOFs), and covalent organic frameworks (COFs),
Jéssica C. de Almeida, Yanjie Wang, Thais A. Rodrigues, Paulo H. H. Nunes, Vagner R. de Mendonça, Paulo H. E. Falsetti, Leticia V. Savazi, Tao He, Alexandra V. Bardakova, Aida V. Rudakova, Jie Tian, Alexei V. Emeline, Osmando F. Lopes, Antonio Otavio T. Patrocínio, Jia Hong Pan, Caue Ribeiro, Detlef W. Bahnemann   +16 more
wiley   +1 more source

Robust Discontinuity Preserving Optical Flow Methods

Image Processing On Line, 2016
In this work, we present an implementation of discontinuity-preserving strategies in TV-L1 optical flow methods. These are based on exponential functions that mitigate the regularization at image edges, which usually provide precise flow boundaries ...
Nelson Monzón, Agustín Salgado, Javier Sánchez   +2 more
doaj   +1 more source