Suggested Topics within your search.
Suggested Topics within your search.
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2641
Latent or Manifest Observers: Two Dichotomous Approaches of Surveillance in Mental Health Nursing
Published 2011-01-01“…The underlying relationships between these two different dichotomous positions transform the act of observing into surveillance. …”
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2642
Switched Systems Reduction Framework Based on Convex Combination of Generalized Gramians
Published 2009-01-01“…In order to avoid numerical instability and also to increase the numerical efficiency, convex generalized gramian-based Petrov-Galerkin projection is constructed instead of the similarity transform approach for reduction. It is proven that the method preserves the stability of the original switched system at least for stabilizing switching signal and it is also less conservative than the method which is based on the common generalized gramian. …”
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2643
Communication emitter individual identification based on 3D-Hibert energy spectrum and multi-scale fractal features
Published 2017-04-01“…For communication emitter identification,a novel method based on Hilbert-Huang transform (HHT) and multi-scale fractal features was proposed.First,the time frequency energy spectrum was derived via HHT,which was called a complicated curved surface in the three-dimension space,namely,3D-Hilbert energy spectrum.Then,the differential box dimension and the multi-fractal dimension was extracted to compose the feature vector under multi-scale segmentation using fractal theory.Finally,communication emitter individual identification was obtained using the two dimensions of features above and the support vector machine (SVM).Moreover,the novel method was compared with two existing methods to identify simulated and actual signals with different and the same modulation modes,respectively.Results show that the identification rate of the novel method is higher than that of the two other methods.The features extracted by the novel method have high stability,sufficiency,and identifiability,also outweigh the negative effects of the change of signal-to-noise ratio and the number of training samples and emitters.…”
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2644
Analytical Approximate Solutions of Caputo Fractional KdV-Burgers Equations Using Laplace Residual Power Series Technique
Published 2024-01-01“…The main aim of this work is to present the analytical approximate series for the nonlinear Caputo fractional KdV-Burgers equation by applying the Laplace residual power series method. The main tools of this method are the Laplace transform, Laurent series, and residual function. …”
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2645
FPGA Implementation of Optimal 3D-Integer DCT Structure for Video Compression
Published 2015-01-01“…A novel optimal structure for implementing 3D-integer discrete cosine transform (DCT) is presented by analyzing various integer approximation methods. …”
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2646
The library of reference models of the physical layer signals
Published 2022-09-01“…The wireless communication is very widely used information transmission systems. Wireless networks differ from cable networks on physical and partially on data link layer OSI in use of different methods of modulation. …”
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2647
Application and Evolution for Neural Network and Signal Processing in Large-Scale Systems
Published 2021-01-01“…However, due to the low accuracy of the current analysis methods for low frequency signal extraction of ALFF, we propose the Fourier-based synchrosqueezing transform (FSST), which is often used in the field of signal processing to extract the ALFF of the low frequency power spectrum of the whole-time dimension. …”
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2648
Dynamic characteristic analysis and load design of large floating structures based on experimental design
Published 2025-01-01“…The boundary element method based on potential flow theory is applied to calculate the frequency domain response of the structure, and the time domain response of the structure is calculated by the Fourier transform and convolution method. …”
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2649
Advanced Color Edge Detection Using Clifford Algebra in Satellite Images
Published 2021-01-01“…Quaternion-based Fourier transform is used to process red, green and blue (RGB) images separately in the vector field. …”
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2650
Application of remotely sensed image of SPOT5 to land use change survey
Published 2005-01-01“…The accuracy of different fusion methods was compared. The results indicated that it was better to apply different fusion methods to SPOT5 image integratedly to carry on land use change survey and output result map at 1∶10000 scale.…”
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2651
Identification of Sudden Stiffness Change in the Acceleration Response of a Nonlinear Hysteretic Structure
Published 2020-01-01“…The integration of discrete wavelet transform and independent component analysis (DWT-ICA) method can directly identify time-varying changes in linear structures. …”
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2652
Numerical solutions of a fractional order SEIR epidemic model of measles under Caputo fractional derivative.
Published 2025-01-01“…The Homotopy perturbation transform method (HPTM) and Yang transform decomposition methodology (YTDM) have been employed to obtain the numerical solution of the time fractional model. …”
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2653
Snoring Sound Recognition Using Multi-Channel Spectrograms
Published 2024-01-01“…Snoring detection is a simple and non-invasive method. In many studies, the feature maps are obtained by applying a short-time Fourier transform (STFT) and feeding the model with single-channel input tensors. …”
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2654
Modeling of Thermal Distributions around a Barrier at the Interface of Coating and Substrate
Published 2013-01-01“…Due to constant heat flux, the thermal distribution around an insulated barrier at the interface of substrate and functionally graded material (FGM) which are essentially two-phase particulate composites is examined in such a way that the volume fractions of the constituents vary continuously in the thickness direction. Using integral transform method, two-dimensional steady-state diffusion equation with variable conductivity is turned into constant coefficient differential equation. …”
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2655
Tracking of Brain Tumors using Vision and Neurosonography
Published 2010-01-01“…The probe is tracked using two different methods: one of them based on a generalised Hough transform and the other one based on particle filters. …”
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2656
Two-Dimensional Reconstructed Image of a Subsurface Structure Using Continuous Scanned Photothermal Imaging
Published 2025-01-01“…The photothermal imaging method with continuous 2D surface scanning is performed on three copper-resin double-layer samples with different subsurface structures. …”
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2657
Image information optimization processing based on fractional order differentiation and WT algorithm.
Published 2025-01-01“…The average gradient, information entropy, spatial frequency, mutual information of the method adopted by the study for image fusion was compared with other methods in case of different groups of images. …”
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2658
Effect of Shear on Ultrasonic Flow Measurement Using Nonaxisymmetric Wave Modes
Published 2014-01-01“…Meanwhile a general boundary condition is formulated to cover different types of wall configurations. A semianalytical method based on the Fourier-Bessel theory is provided to transform the differential equation to algebraic equations. …”
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2659
Beam-like damage detection methodology using wavelet damage ratio and additional roving mass
Published 2022-10-01“…Thus, a frequency-shift curve is observed, and different damage identification techniques were used, such as the discrete wavelet transform and the derivatives of the frequency-shift curve. …”
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2660
Load magnitude and location estimation on additively manufactured circular structures using deep learning
Published 2025-01-01“…In this study, surface response to excitation method (SuRE) was implemented with multiple steps by considering the challenges of the geometry. …”
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