Results 81 to 90 of about 44,291 (189)

Vacuum Energy in Ultralocal metrics for TT tensors with Gaussian Wave Functionals [PDF]

, 1995
We calculate, in a class of Gauge invariant functionals, by variational methods, the difference of vacuum energy between two different backgrounds: Schwarzschild and Flat Space.
Garattini, Remo
core   +1 more source

A Single-End Location Method for Small Current Grounding System Based on the Minimum Comprehensive Entropy Kurtosis Ratio and Morphological Gradient

Applied Sciences
Fault location technology is crucial for enhancing the efficiency of fault maintenance and ensuring the safety of the power supply in small current grounding systems.
Jiyuan Cao, Yanwen Wang, Lingjie Wu, Yongmei Zhao, Le Wang   +4 more
doaj   +1 more source

Matrix Model of QCD: Edge Localized Glue Balls and Phase Transitions

, 2017
In a matrix model of pure $SU(2)$ Yang-Mills theory, boundaries emerge in the space of $\textrm{Mat}_{3}(\mathbb{R})$ and the Hamiltonian requires boundary conditions.
Acharyya, Nirmalendu, Balachandran, A. P.   +1 more
core   +1 more source

Application of Variational Mode Decomposition in Wind Power Fault Diagnosis

Jixie chuandong, 2015
As to mode mixing problem of empirical mode decomposition（ EMD） and local mean decomposition（ LMD） when they are applied to field data decomposition,a new wind turbine fault diagnosis method based on variational mode decomposition（ VMD） is put forward ...
Wu Yingjie, Zhen Chenggang, Liu Changliang   +2 more
doaj  

RMS/Rate Dynamics via Localized Modes

, 2002
We consider some reduction from nonlinear Vlasov-Maxwell equation to rms/rate equations for second moments related quantities. Our analysis is based on variational wavelet approach to rational (in dynamical variables) approximation.
Antonina N. Fedorova, Antonina N. Fedorova, Michael G. Zeitlin, Michael G. Zeitlin   +3 more
core   +2 more sources

State of Charge Balancing Control Strategy for Wind Power Hybrid Energy Storage Based on Successive Variational Mode Decomposition and Multi-Fuzzy Control

Energies
To address the instability of wind power caused by the randomness and intermittency of wind generation, as well as the challenges in power compensation by hybrid energy storage systems (HESSs), this paper proposes a state of charge (SOC) balancing ...
Rui Hou, Jiqing Liu, Jingbo Zhao, Jinhui Liu, Wenxiang Chen   +4 more
doaj   +1 more source

Embedded discontinuities for softening solids [PDF]

, 1999
Additional, discontinuous functions are added to the displacement field of standard finite elements in order to capture highly localised zones of intense straining.
Sluys, LJ, Wells, GN
core  

A hybrid VMD-LSTM-SVR model for landslide prediction

Frontiers in Built Environment
Landslides are one of the most prevalent natural geological disasters, causing significant economic losses, damaging public environments, and posing severe threats to human lives.
Nianhong Wang, Meijun Wang, Jun Zhang
doaj   +1 more source

A novel combination model for ultra-short-term wind speed prediction

Scientific Reports
Accurate and rapid ultra-short-term wind speed prediction is crucial for wind farm operation control. This paper proposes a wind speed prediction model that integrates Variational Mode Decomposition, Sparrow Search Algorithm, and Long Short-Term Memory ...
Shunqing Xu, Jincai Niu
doaj   +1 more source

Suppression of Strong Cultural Noise in Magnetotelluric Signals Using Particle Swarm Optimization-Optimized Variational Mode Decomposition

Applied Sciences
To effectively separate strong cultural noise in Magnetotelluric (MT) signals under strong interference conditions and restore the true forms of apparent resistivity and phase curves, this paper proposes an improved method for suppressing strong cultural
Zhongda Shang, Xinjun Zhang, Shen Yan, Kaiwen Zhang   +3 more
doaj   +1 more source