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1341
The (im)possibility of communication
Published 2022-10-01“… This paper addresses the question of communication from a perspective opened up by Derrida’s reading of Joyce’s Ulysses in terms of the relationship between the notion of the ‘yes’ or iterability, the signature of (and counter-signature to) a text and two types of laughter. …”
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1342
基于响应面法的剪力板阻尼器设计优化
Published 2021-01-01“…To improve stability and deformability of shear panel dampers( SPD) in the large plastic strain range,issues the optimization of an SPD which was attempted to use the response surface method and verified by tests.SPD with different widths and thicknesses were primarily analyzed by the finite element method( FEM),and the strain concentration factor was selected as the optimization target.Optimal parameters were obtained for the SPD when the iterative calculation is converged.According to the experimental results,the optimized damper based on the response surface method exhibits simultaneously a good stability and perfect deformability.This paper provides an effective method for the optimal design of the structure in the large plastic deformation range.…”
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1343
Single X-ray Projection Material Decomposition using a Mesh Projector
Published 2025-02-01“…A stochastic gradient descent algorithm is used to iteratively minimize the error between a scanned radiograph and a simulated polychromatic radiograph, enabling the estimation of mass fractions. …”
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1344
Generalized Refinement of Gauss-Seidel Method for Consistently Ordered 2-Cyclic Matrices
Published 2021-01-01“…The study points out that, using the generalized refinement of Gauss-Seidel method, we obtain a solution of a problem with a minimum number of iteration and obtain a greater rate of convergence than other previous methods.…”
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1345
The value of hands-on experiments in an upper-division classical mechanics course
Published 2025-01-01“…We share our experience incorporating open-ended experimentation into an upper-division classical mechanics course through project-based learning, including one student’s investigation of a common textbook problem and its unexpected connections to astrophysics. By iterating a computational model and an experimental apparatus, the student participated in inquiry in a way that would not have been possible in a typical classical mechanics course. …”
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1346
A Radio-interferometric Imaging Method Based on the Wavelet Tight Frame
Published 2025-01-01“…To enhance computational efficiency, we employ the projected fast iterative soft-thresholding algorithm for solving the l _1 -norm minimization problem. …”
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1347
The Equivalent Linearization Method with a Weighted Averaging for Solving Undamped Nonlinear Oscillators
Published 2018-01-01“…The results obtained via this method are compared with the ones achieved by Parameterized Perturbation Method (PPM), Min–Max Approach (MMA), Variational Iteration Method (VIM), Homotopy Perturbation Method (HPM), Energy Balance Method (EBM), Harmonic Balance Method (HBM), 4th-Order Runge-Kutta Method, and the exact ones. …”
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1348
Rough Paths above Weierstrass Functions
Published 2024-11-01“…The fundamental observation of rough paths theory is that if one can define “iterated integrals” above a signal, then one can construct solutions to differential equations driven by the signal.The typical examples of the signals of interest are stochastic processes such as (fractional) Brownian motion. …”
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1349
Denoising and reconstruction of evaporation duct based on quadratic optimal threshold approximation message passing method
Published 2019-10-01“…To solve the problem that the mixed noise of compressed sensing observation stage had adverse effects on the high-precision reconstruction in the time-space situation awareness process of evaporative duct,an approximate message passing method based on quadratic optimal threshold was proposed.A quadratic stabilization threshold function which integrated advantages of soft and hard threshold functions was designed,and the optimal threshold setting policy was added to the iterative process based on conjugate gradient method to speed up convergence.Theoretical analysis and experiments show that,compared with several mainstream algorithms,the proposed algorithm has the faster convergence rate and lower denoising reconstruction error.…”
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1350
Noise amplification and ill-convergence of Richardson-Lucy deconvolution
Published 2025-01-01“…It can offer an increase in contrast, but converges poorly, and shows enhancement of noise as the iteration progresses. We have discovered the underlying reason for this problematic convergence behaviour using a Cramér Rao Lower Bound (CRLB) analysis. …”
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1351
Voltage Stability Bifurcation Analysis for AC/DC Systems with VSC-HVDC
Published 2013-01-01“…Based on the steady model of VSC-HVDC, a new improved sequential iterative power flow algorithm is proposed. Then, by use of continuation power flow algorithm with the new sequential method, the voltage stability bifurcation of the system is discussed. …”
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1352
Robust beamforming for multicell downlink TDD massive MIMO system based on QoS
Published 2017-11-01“…In view of multicell downlink time division multiplexing (TDD) massive multiple-input multiple-output (MIMO) systems which had imperfect channel state information (CSI),the beamforming problem that minimized the total transmit power and signal leakage power based on quality of service (QoS) was studied.First,the objective problem was approximated as a standard convex optimization problem.Then,by using the duality of uplink and downlink,an inner and outer layer iterative algorithm was proposed.Numerical results show that,comparing with other typical downlink multicell massive MIMO beamforming algorithms,the proposed algorithm has obvious advantages in terms of complexity and energy efficiency.…”
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1353
Recursive Elucidation of Polynomial Congruences Using Root-Finding Numerical Techniques
Published 2014-01-01“…For this purpose, root-finding iterative methods are employed for solving polynomial congruences of the form axn≡b(mod pk), k≥1, where a,b, and n>0 are integers which are not divisible by an odd prime p. …”
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1354
Energy efficiency joint optimization algorithm for low-precision ADC massive MIMO systems
Published 2020-06-01“…An uplink energy efficiency optimization algorithm based on alternating optimization algorithm was proposed for large-scale multiple-input multiple-output (MIMO) systems with low-precision analog to digital converters (ADC).That is,based on the maximum ratio combining (MRC) reception,an optimization model aiming at maximizing energy efficiency was established,and then the original fractional form optimization problem was converted into an equivalent subtractive form according to the nature of the fractional programming.In the case where the number of quantization bits was constant,the iterative optimization of the transmission power and the pilot length were performed.Simulation results show that the proposed algorithm has better spectral efficiency and energy efficiency.…”
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1355
Applications of Fixed-Point and Optimization Methods to the Multiple-Set Split Feasibility Problem
Published 2012-01-01“…In this paper, we will review and report some recent results on iterative approaches to the multiple-set split feasibility problem.…”
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1356
Fixed Point Results on Closed Ball in Convex Rectangular b−Metric Spaces and Applications
Published 2022-01-01“…The purpose of this study is to indicate a way of generalizing Mann’s iteration algorithm and a series of fixed point results in rectangular b−metric spaces. …”
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1357
A New Nonsmooth Bundle-Type Approach for a Class of Functional Equations in Hilbert Spaces
Published 2017-01-01“…A new bundle-type approach for solving a class of functional equations is presented by combining bundle idea for nonsmooth optimization with common iterative process for functional equations. Our strategy is to approximate the nonsmooth function in functional equation by a sequence of convex piecewise linear functions, as in the bundle method; this makes the problem more tractable and reduces the difficulty of implementation of method. …”
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1358
Optimal Sixteenth Order Convergent Method Based on Quasi-Hermite Interpolation for Computing Roots
Published 2014-01-01“…We have given a four-step, multipoint iterative method without memory for solving nonlinear equations. …”
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1359
Analytical Solutions of Boundary Values Problem of 2D and 3D Poisson and Biharmonic Equations by Homotopy Decomposition Method
Published 2013-01-01“…The method does not require any corrected function or any Lagrange multiplier and it avoids repeated terms in the series solutions compared to the existing decomposition method including the variational iteration method, the Adomian decomposition method, and Homotopy perturbation method. …”
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1360
Relative Displacement Method for Track-Structure Interaction
Published 2014-01-01“…For its solution, an iterative optimisation algorithm is used. This method can be implemented in any programming language or analysis software. …”
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