Results 1 to 10 of about 4,365,412 (214)
Scientia in Educatione, 2017 We are faced with chaotic processes in many segments of our life: meteorology, environmental pollution, financial and economic processes, sociology, mechanics, electronics, biology, chemistry.
Tamás Meszéna
doaj +5 more sources
Computing Zernike polynomials of arbitrary degree using the discrete Fourier transform [PDF]
Journal of the European Optical Society-Rapid Publications, 2007 The conventional representation of Zernike polynomials Rmn(ρ) gives unacceptable numerical results for large values of the degree n. We present an algorithm for the computation of Zernike polynomials of arbitrary degree n. The algorithm has the form of a
Janssen Augustus J. E. M., Dirksen Peter
doaj +1 more source
Reynolds Sensitivity of the Wake Passing Effect on a LPT Cascade Using Spectral/hp Element Methods
International Journal of Turbomachinery, Propulsion and Power, 2022 Reynolds-Averaged Navier–Stokes (RANS) methods continue to be the backbone of CFD-based design; however, the recent development of high-order unstructured solvers and meshing algorithms, combined with the lowering cost of HPC infrastructures, has the ...
Andrea Cassinelli +5 more
doaj +1 more source
Van der Waals integration of artificial heterostructures and high-order superlattices
National Science Open, 2023 The recent blossom in 2D atomic crystals (2DACs) has ignited intense interest in a new type of bond-free van der Waals heterostructures (vdWHs), in which distinct material components are physically brought together within a vdW distance and held together
Qian Qi, Wan Zhong, Duan Xiangfeng
doaj +1 more source
Frontiers in Physics, 2020 Metasurface is an artificially arranged sub-wavelength micro-structure array, where each structure can be regarded as a unit cell that is controlled by electromagnetic waves.
Zhenyu Xu +4 more
doaj +1 more source
A High-Order Load Model and the Control Algorithm for an Aerospace Electro-Hydraulic Actuator
Actuators, 2021 It is difficult to describe precisely, and thus control satisfactorily, the dynamics of an electro-hydraulic actuator to drive a high thrust liquid launcher engine, whose structural resonant frequency is usually low due to its heavy inertia and ...
Shoujun Zhao +6 more
doaj +1 more source
Two high-order superfine comb filters based on HiBi Fiber Ring
上海师范大学学报. 自然科学版, 2017 Considering optical filter based on HiBi fiber generally has one input and one output with the fixed interval of the wavelength,this paper designs two new tunable high-order superfine comb filters based on HiBi fiber Sagnac ring.They have the particular ...
Tian Jiayang, Wu Xiangnong
doaj +1 more source
High-Order Laplacian Regularized Low-Rank Representation for Multimodal Dementia Diagnosis
Frontiers in Neuroscience, 2021 Multimodal heterogeneous data, such as structural magnetic resonance imaging (MRI), positron emission tomography (PET), and cerebrospinal fluid (CSF), are effective in improving the performance of automated dementia diagnosis by providing complementary ...
Aimei Dong +7 more
doaj +1 more source
Fractal and Fractional, 2022 In this paper, a family of high-order linearly implicit exponential integrators conservative schemes is constructed for solving the multi-dimensional nonlinear fractional Schrödinger equation.
Yayun Fu +3 more
doaj +1 more source
IEEE Access, 2019 This study concentrates on the bipartite tracking consensus for nonlinear high-order multi-agent systems(MASs) subject to exogenous disturbances over a signed directed graph. First, under the condition of nonlinear dynamics, two new control protocols are
Qiang Wang +4 more
doaj +1 more source