Results 81 to 90 of about 580,269 (285)

Analysis of Flow Field Structure Characteristics of Dual Impinging Jets at Different Velocities

Aerospace
The flow structure and unsteady evolution characteristics of dual impinging jets represent a flow problem of significant engineering importance in the aerospace field.
Yifan Zhao, Yuxiang Liang, Xunnian Wang, Pengfei Yan, Jiaxi Zhao, Rongping Zhang   +5 more
doaj   +1 more source

Enhanced monopulse radar tracking using empirical mode decomposition [PDF]

, 2010
Monopulse radar processors are used to track targets that appear in the look direction beamwidth. The target tracking information (range, azimuth angle, and elevation angle) are affected when manmade high power interference (jamming) is introduced to the
Elgamel, Sherif A.E.H., Soraghan, J.J.
core  

Estimating the solar meridional circulation by normal mode decomposition

, 2007
The objective of this article is to use Fourier-Hankel decomposition as suggested earlier by Braun & Fan (1998) to estimate the integrated horizontal meridional flow velocity as a function of mode penetration depth, and to find ways of potentially ...
Bogdan, Brandenburg, Braun, Braun, Braun, Braun, Braun, Choudhuri, Dikpati, Dikpati, Giles, Giles, Gizon, Haber, Hathaway, Komm, Latushko, Snodgrass, Zaatri, Zhao   +19 more
core   +1 more source

Handbook of Establishing and Maintaining Oxygen‐Free Atmospheres

Advanced Engineering Materials, EarlyView.
This study presents a practical framework for creating oxygen‐free atmospheres at ambient pressure using silane‐doped inert gases. The results show that ultra‐low oxygen levels and strongly reduced water content can be achieved through controlled silane dosing, drying systems, and sensor monitoring.
Sascha Jan Zimmermann, René Gustus, Lienhard Wegewitz, Wolfgang Maus‐Friedrichs   +3 more
wiley   +1 more source

Objective Empirical Mode Decomposition metric

International Journal of Advances in Telecommunications, Electrotechnics, Signals and Systems, 2016
Empirical Mode Decomposition (EMD) is a data-driven technique for extraction of oscillatory components from data. Although it has been introduced over 15 years ago, its mathematical foundations are still missing which also implies lack of objective ...
Dawid Laszuk, Oswaldo Jose Cadenas, Sławomir Jarosław Nasuto   +2 more
doaj   +1 more source

High dynamic range spatial mode decomposition

Optics Express, 2020
An accurate readout of low-power optical higher-order spatial modes is of increasing importance to the precision metrology community. Mode sensors are used to prevent mode mismatches from degrading quantum and thermal noise mitigation strategies. Direct mode analysis sensors (MODAN) are a promising technology for real-time monitoring of arbitrary ...
A. W. Jones, M. Wang, C. M. Mow-Lowry, A. Freise   +3 more
openaire   +3 more sources

Additive Gaussian Process Regression for Predictive Design of High‐Performance, Printable Silicones

Advanced Engineering Materials, EarlyView.
A chemistry‐aware design framework for tuning printable polydimethylsiloxane (PDMS) for vat photopolymerization (VPP) is developed using additive Gaussian process (GP) modeling. Polymer network mechanics informs variable groupings, feasible formulation constraints, and interaction variables.
Roxana Carbonell, Martha Leach, Hongtao Song, Carolyn Seepersad   +3 more
wiley   +1 more source

Modified detrended fluctuation analysis based on empirical mode decomposition

, 2009
Detrended fluctuation analysis (DFA) is a simple but very efficient method for investigating the power-law long-term correlations of non-stationary time series, in which a detrending step is necessary to obtain the local fluctuations at different ...
Alessio, Alvarez-Ramirez, Arrault, Bashan, Carbone, Carbone, Chen, Chen, Chianca, Decoster, Du, Flandrin, Flandrin, Gao-Feng Gu, Gu, Gu, Gu, Halsey, Heneghan, Hu, Huang, Jiang, Jiang, Jiang, Jiang, Jánosi, Kantelhardt, Kantelhardt, Mandelbrot, Mantegna, Meneveau, Montanari, Norouzzadeh, Novikov, Peng, Podobnik, Podobnik, Podobnik, Schertzer, Schertzer, Simonsen, Talkner, Taqqu, Wang, Wei, Wei, Wei-Xing Zhou, Wu, Xi-Yuan Qian, Yeh, Yuan, Yuan, Zhou, Zhou   +53 more
core   +1 more source

Oxide‐Free Titanium Coatings by Wire Arc Spraying in a Silane‐Doped Inert Atmosphere

Advanced Engineering Materials, EarlyView.
A silane‐doped argon atmosphere enables the production of oxide‐free titanium coatings via twin‐wire arc spraying at ambient pressure. This innovative approach eliminates residual oxygen, creating process conditions that prevent oxidation and nitride formation.
Manuel Rodriguez Diaz, Maik Szafarska, René Gustus, Kai Möhwald, Hans Jürgen Maier   +4 more
wiley   +1 more source

Fast Multivariate Empirical Mode Decomposition

IEEE Access, 2018
The multivariate empirical mode decomposition (MEMD) has been pioneered recently for adaptively processing of multichannel data. Despite its high efficiency on time-frequency analysis of nonlinear and nonstationary signals, high computational load and ...
Xun Lang, Qian Zheng, Zhiming Zhang, Shan Lu, Lei Xie, Alexander Horch, Hongye Su   +6 more
doaj   +1 more source