نتایج جستجو برای: vmd
تعداد نتایج: 723 فیلتر نتایج به سال:
Since Pasteur’s work, vaccination against infectious disease has been used successfully to protect animals from many serious diseases some of which were also significant risks to humans. Veterinary vaccine development has paralleled the research and development of vaccines in the human field. However, in veterinary medicine there is a much wider range of products reflecting the diversity of ani...
The LHCb Collaboration has recently discovered a structure around 6.9 GeV in the double-$J/\ensuremath{\psi}$ mass distribution, possibly first fully charmed tetraquark state $X(6900)$. Based on vector-meson dominance (VMD) such should have significant branching ratio for decaying into two photons. We show that recorded LHC data light-by-light scattering may indeed accommodate state, with $\ens...
Microseismic monitoring is an important technology used to evaluate hydraulic fracturing, and denoising a crucial processing step. Analyses of the characteristics acquired three-component microseismic data have indicated that vertical component has higher signal-to-noise ratio (SNR) than two horizontal components. Therefore, we propose new method for using re-constrain variational mode decompos...
With the continuous increase in user-side flexible controllable resources connected into a distribution system, components of electrical load become too diverse and difficult to be accuracy forecasted. A short-term forecast method that integrates variational modal decomposition (VMD), gated recurrent unit (GRU) time convolutional network (TCN) hybrid is proposed this paper. Firstly, original se...
This paper introduces a fault diagnosis method for mine scraper conveyor gearbox gears using motor current signature analysis (MCSA). approach solves problems related to gear characteristics that are affected by coal flow load and power frequency, which difficult extract efficiently. A is proposed based on variational mode decomposition (VMD)–Hilbert spectrum ShuffleNet-V2. Firstly, the signal ...
Because of the impact complex environment tunnel portals, measured blasting vibration signals in a portal contains lot high-frequency noise. To achieve effective noise reduction, novel method reduction for based on whale optimization algorithm (WOA) optimized with variational mode decomposition (VMD) was proposed. The WOA is used to optimize globally number K and penalty factor α VMD determine ...
We show that the Hidden Local Symmetry Model, supplemented with well-known procedures for breaking flavor SU(3) and nonet symmetry, provides all the information contained in the standard Chiral Perturbation Theory (ChPT) Lagrangian L (0) + L (1). This allows to rely on radiative decays of light mesons (V P γ and P γγ) in order to extract some numerical information of relevance to ChPT: a value ...
This technical bulletin is designed to assist the veterinary practitioner in the management of outbreak situations involving canine infectious respiratory disease (CIRD). To this end, we have gathered recent opinions and articles from some of the leaders in the veterinary community. Our goal is to provide clinics with general guidelines regarding the handling, diagnosis, and treatment of their ...
The cross section of e + e − → π + π − π + π − has been measured for center-of-mass energy from 0.6 GeV to 4.5 GeV by BABAR collaboration. We apply these experimental data to fit the theoretical cross section derived from the VMD(Vector Meson Dominance) model. At the same time, the relevant parameters have been deduced from the fitting, and the isovector form factor has also been obtained.
The complex operating environment of gearboxes and the easy interference early fault feature information make identification difficult. This paper proposes a diagnosis method based on combination whale optimization algorithm (WOA), variational mode decomposition (VMD), deep transfer learning. First, VMD is optimized by using WOA, minimum sample entropy used as fitness function to solve for K va...
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