With the grid-connected application of renewable energy sources such as wind and photovoltaic power, nonlinearity fluctuation load data makes forecasting more difficult than ever before. In order to extract implicit relationship between multiple features power construct a long-term sequence dependency, this paper proposes short-term based on improved temporal convolutional network (TCN) densely connected (DenseNet). Firstly, are reconstructed by using fixed-length sliding window, then...

Accurate and efficient short-term power load forecasting is crucial for ensuring the stable operation of systems rational planning electricity resources. However, data are often characterized by nonlinearity instability due to external factors such as meteorological conditions day types, making accurate challenging. While some hybrid models can effectively capture spatiotemporal features data, they overlook multi-periodicity leading suboptimal feature extraction efficiency. In this paper, a...

In this paper, a novel approach to classify the signals of power quality (PQ) disturbance is proposed based on segmented and modified S-transform (SMST), deep convolutional neural network (DCNN), multiclass support vector machine (MSVM). The idea frequency segmentation with different adjustable parameters was used in Gaussian window function. accurate time-frequency localization efficient feature extraction PQ disturbances then could be achieved. Firstly, SMST analyze obtained...

Short-term load forecasting (STLF) has a significant role in reliable operation and efficient scheduling of power systems. However, it is still major challenge to accurately predict due social natural factors, such as temperature, humidity, holidays weekends, etc. Therefore, very important for the feature selection extraction input data improve accuracy STLF. In this paper, novel hybrid model based on empirical mode decomposition (EMD), one-dimensional convolutional neural network (1D-CNN),...

Objective To review the major progress in mechanism of traditional Chinese medicine (TCM) treatment allergic rhinitis (AR). Methods Contents about TCM therapy AR this article were obtained from 22 original articles and reviews published Chinese- English-language journals. All references searched by use Pubmed (1997-2012). Results is one most common serious public health problems children young people. Many patients worried possible adverse effects synthetic drugs they taking. Thus, seek...

Due to difficulties with electric energy storage, balancing the supply and demand of power grid is crucial for stable operation systems. Short-term load forecasting can provide an early warning excessive consumption utilities by formulating generation, transmission distribution in advance. However, nonlinear patterns dynamics data still make accurate a challenging task. To address this issue, deep temporal convolutional network (TCN)-based hybrid model combined variational mode decomposition...

Abstract A novel compact microstrip second‐order lossy bandpass filter (BPF) based on an improved simplified composite right‐/left‐handed zeroth‐order resonator (ISZOR) is presented in this paper. The ISZOR (MISZOR) features miniature topology and ample adjustable physical parameters accompanied by its easily controllable base mode first harmonic. Its layout can be quickly generated applying the implicit space mapping technique. By virtue of coupling matrix synthesis method, finite unloaded...

The interaction of an ultraintense laser pulse with parabolic concave target is studied using two-dimensional particle-in-cell simulation. It found that ions at the back can be accelerated more effectively than a plane because large electrostatic field on propagation axis induced by focusing expelled electrons. A highly collimated ion bunch high particle and current densities appears. dependence quality acceleration bunching width cavity examined. maximum energy greatly enhanced when attains...

The trajectories of electrons originating from different initial locations in the unperturbed plasma during interaction an ultraintense laser with underdense bubble regime are followed by particle-in-cell simulation. It is found that initially aligned rim focal spot contribute most to bow wave front and those lateral sheath edge self-injection at back bubble. A scaling law between transverse electric magnetic fields for case where there many given discussed terms betatron oscillations...

The ion acceleration from a double-layer target irradiated by transversely Gaussian laser pulse is investigated theoretical analysis and particle-in-cell simulations. main idea of the to match transverse areal mass density with intensity profile single specie two densities or species. Two-dimensional simulations show that deformation instability are efficiently suppressed in scheme, ions within spot uniformly accelerated well collimated forward direction, GeV/u monoenergetic beams very low...

Electron acceleration in the low-density preplasma of a thin solid target by short intense laser pulse is investigated particle-in-cell simulation. Electrons are trapped and accelerated ponderomotive force as well wake bubble field. When stopped reflected target, electrons continue to move forward inertially, passing through with small energy spread emittance. The use present scheme practical applications discussed.

Bubble core field modification due to the nondepleted electrons present inside bubble is investigated theoretically. These residual induce charge and current densities that can as well shape change. It found entering into move backward at almost light speed would weaken transverse fields. This reduces ratio of longitudinal radius bubble. For field, two effects compensate with each other because their competition between enhancement by shortening reduction electrons. Therefore hardly...

An analytical expression based on the paraxial approximation describing propagation of a subcycle axicon Gaussian laser pulse in vacuum is obtained. The broad spectrum ultrashort given terms Taylor series main wave frequency. spatial and temporal characteristics are strongly coupled. model used to consider electron acceleration by light pressure an intense pulse. can also be applied other short profiles.

An analytical model based on the diffraction-induced transformation [A. E. Kaplan, J. Opt. Soc. Am. B 15, 951 (1998)] for an ultrashort subcycle laser pulse propagating in vacuum is considered. The initially Gaussian. To lowest order of diffraction angle its evolution satisfies Maxwell’s equations. used to study motion charged particles pulse. It shown that delta-function representation excellent approximation a studying charged-particle dynamics

The fluorescence from the out-of-focus region excited by sidelobes of a Bessel beam is major concern for light-sheet microscopy (LSFM) with plane illumination. Here, we propose method applying subtractive imaging to overcome limitation conventional LSFM In proposed method, sample imaged twice line scanning using extended solid and ring-like beam. By subtracting between two images similar blur, improved image quality suppression enhanced sectioning ability contrast are demonstrated.

A stable and reliable power system is crucial for human daily lives economic stability. Power load forecasting the foundation of dynamically balancing between supply demand sides. However, with popularity renewable energy sources electric vehicles, it still struggles to achieve accurate due complex patterns dynamics data. To mitigate these issues, this paper proposes a new hybrid model based on sample convolution integration network (SCINet) long short-term memory (LSTM) forecasting....

The optical guiding of a moderately intense laser pulse in parabolic preformed plasma channel is analyzed by means the variational method. Relativistic, ponderomotive and their coupling nonlinearities are included. conditions for periodic defocusing focusing, as well constant spot size propagation given. It found that focusing released relativistic nonlinearities.

In this paper, the general expressions of three-order Lagrangian equations in a motional coordinate system are obtained. systems with some specific forms motion, corresponding to these also presented.

The laser-induced plasma wakefield in a capillary is investigated on the basis of simple two-dimensional analytical model. It shown that as an intense laser pulse reshaped by wall propagates plasma, it resonantly excites strong if suitable width and radius are chosen for certain density. dependence density resonance conditions considered. amplitude longitudinal scale bubbles much larger than those unbounded so guided more favorable to electron acceleration.

Using a variational approach, the propagation of moderately intense laser pulse in parabolic preformed plasma channel is investigated. The effects higher-order relativistic nonlinearity (HRN) and wakefield are included. effect HRN serves as an additional defocusing mechanism has same order magnitude spot size that transverse (TWF). longitudinal much larger than those TWF for with length equaling wavelength. catastrophic focusing would be prevented present then it varies periodic oscillations.

Abstract The use of propagation-invariant Airy beams enables a light-sheet microscopy with large field-of-view. Without relying upon two-photon excitation or deconvolution-based processing to eliminate out-of focus blur caused by the side lobes, here, we present how subtraction method is applied enhance image quality in digital scanned beam. In proposed method, planar beam symmetric transversal structure used excite sample. A hollow zero intensity at focal plane created, which mainly...