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1501
Three-Step Block Method for Solving Nonlinear Boundary Value Problems
Published 2014-01-01“…The proposed block method will be adapted with multiple shooting techniques via the three-step iterative method. The boundary value problem will be solved without reducing to first-order equations. …”
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1502
Basin of Attraction through Invariant Curves and Dominant Functions
Published 2015-01-01“…In particular, for certain range of the parameters, a subset of the basin of attraction of the stable equilibrium is achieved by bounding positive solutions using the iteration of dominant functions with attracting equilibria.…”
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1503
A Comparative Study on Qualification Criteria of Nonlinear Solvers with Introducing Some New Ones
Published 2022-01-01“…These use all parameters of a nonlinear solver such as convergence order, number of function evaluations, number of iterations, CPU time, etc. To achieve the criteria, different algorithms to solve nonlinear systems are categorised to three kinds. …”
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1504
Anti-Inflammatory Properties of Dendrimers per se
Published 2011-01-01“…Unlike linear polymers, they have perfectly defined structure and molecular weight, due to their iterative step-by-step synthesis. Their multivalent structure and supramolecular properties have made them attractive nanotools for applications, particularly in biology and medicine. …”
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1505
Adaptive beamforming of massive MIMO based on DoA in high mobility scenarios
Published 2017-06-01“…A direction of arrival based (DoA-based) beamforming of massive MIMO was proposed for high-speed railway scenarios.In order to guarantee that the optimal system capacity can be obtained during traveling,an iterative multi-beams scheme was proposed.It aimed to design different beams for different mobile carriage terminals (MCT) respectively.The proposal adaptively selected the number of antennas for each beam,and adaptively designed the number of beams according to system capacity.Moreover,the scheme didn’t need channel state information (CSI) that can reduce system implementation complexity and cost.Numerical results indicate that the proposed scheme is suitable for high-speed scenarios,the system performance can be improved more efficiently compared to conventional methods.…”
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1506
Reordering for Improved Constrained Reconstruction from Undersampled k-Space Data
Published 2008-01-01“…In this technique, the intensities of the signal estimate are reordered according to a preprocessing step when applying the constraints on the estimated solution within the iterative reconstruction. The ordering of the intensities is such that it makes the original artifact-free signal monotonic and thus minimizes the finite differences norm if the correct image is estimated; this ordering can be estimated based on the undersampled measured data. …”
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1507
Optimization of [C]Raclopride Positron Emission Tomographic Rat Studies: Comparison of Methods for Image Quantification
Published 2013-06-01“…In addition, filtered backprojection is recommended as a reconstruction algorithm, although iterative methods may be more sensitive to detect within-group differences.…”
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1508
Analysis of the Kinematics and Workspace of a Tripod Parallel Robot
Published 2018-01-01“…On the basis of the inverse solution analysis,the forward kinematics analysis formula is solved,and by using the numerical method of Newton iteration,the forward kinematics position is calculated. …”
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1509
Off-Grid DOA Estimation Based on Compressed Sensing on Multipath Environment
Published 2023-01-01“…Then, the problem of multipath propagation coefficients estimation is converted to the estimation of an error matrix and the grid is refined iteratively. The simulation results show that the method can achieve off-grid DOA estimation in the presence of the multipath propagation signals.…”
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1510
Research and Application of SURF and Gray Difference in Detection of Small Modulus Plastic Gear Defect
Published 2018-01-01“…The obtained key points are iteratively sorted,and the RANSAC( Random sample consensus) algorithm is used to extract the matching points for two times. …”
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1511
Multi-cell downlink coordinated beam forming algorithm based on fairness duality theory
Published 2013-01-01“…With the goal to optimize the multi-cell downlink beamforming based on the criterion of the worst-user rate maximization,the Lagrangian duality theory was first used to derive a virtual multi-cell uplink optimization problem that was dual to the primal multi-cell downlink beamforming optimization problem.Base on that,an iterative algorithm was developed to solve the virtual uplink problem by combining the methods of bisection search and geometric programming.Then,the primal multi-cell downlink coordinated beamforming optimization problem could be solved by converting the solution of the virtual uplink problem to the downlink.Simulation results demonstrate that,in contrast to the existing coordinated beamforming schemes,the proposed scheme achieves better performance in terms of both the worst-user rate and the rate per energy (RPE).…”
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1512
Estimation of Heat Flux in Two-Dimensional Nonhomogeneous Parabolic Equation Based on a Sufficient Descent Levenberg–Marquard Algorithm
Published 2021-01-01“…At last, compared with other methods, the results of simulation experiment show that this algorithm can obviously reduce the running time and iterative number.…”
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1513
Design and Construction of a Four-Point Contactless Switch for Industrial Application.
Published 2024“…The system's accuracy and reliability were assessed through testing and iteration, showing high accuracy and fast response times. …”
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1514
Magnetic Field Finite Element Analysis of Disc-type Magnetorheological Fluid Transmission Device Driven by Shape Memory Alloy
Published 2015-01-01“…The magnetic circuit theoretical model of transmission device is simulated by ANSYS software and the correctness of the simulation model is verified by the iterative calculation. The influences of different disc material and working gap size along the radial magnetic induction intensity are obtained by simulation of magnetic circuit,moreover the influence of isolation ring to the magnetic field intensity and output torque is analyzed.…”
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1515
Asymptotic Optimality and Rates of Convergence of Quantized Stationary Policies in Continuous-Time Markov Decision Processes
Published 2022-01-01“…Furthermore, we discretize and incentivize the action space and construct a sequence of quantizer policies, which is the approximation of the optimal stationary policies of the CTMDPs, and get the approximation result and the rates of convergence on the expected discounted rewards of the quantized stationary policies. Also, we give an iteration algorithm on the approximate optimal policies. …”
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1516
Research of the Workspace Boundary Solving and Flexibility of 3-RRR Planar Parallel Robot
Published 2016-01-01“…A circular search algorithm for solving the spatial boundary of the planar parallel robot is proposed which is based on the iterative search method,and its flexibility index is analyzed. …”
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1517
Bandwidth allocation games based on network selection for video communication
Published 2015-02-01“…A bandwidth allocation game based on network selection (BAG-NS) was proposed for video communication in heterogeneous wireless networks.Firstly,according to the video characteristics of different users and current network conditions,the algorithm calculated the weights of network factors and selected the optimum network by combining analytic hierarchy process and entropy theory.Secondly,the user’s utility function with payoff and cost was designed,and a distributed iterative algorithm is used to obtain the Nash equilibrium.Then the existence and uniqueness of the Nash equilibrium are proved.Simulation results show that the proposed algorithm enables different users to reasonably distribute in different networks and takes users’ fairness and network congestion control into consideration,which increases the utilization of network resources,reduces the users’ video distortion,and improves the users’ video quality.…”
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1518
Analysis of Elastohydrodynamic Lubrication Characteristic of the Roller Enveloping Hourglass Worm Drive
Published 2020-08-01“…The elastohydrodynamic lubrication of drive pair is solved by using direct iterative method, the curves of oil film pressure and thickness of this drive pair are obtained. …”
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1519
Crack initiation at V-notch tip subjected to in-plane mixed mode loading: An application of the fictitious notch rounding concept
Published 2015-09-01“…Finally, for comparison, the support factor is determined on a purely numerical basis by iterative analysis of FE models.…”
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1520
Improved CMA-FSE blind equalization algorithm for wireless ultraviolet communication
Published 2019-03-01“…There are serious intersymbol interference (ISI) and signal attenuation in wireless ultraviolet communication system.Aiming at this problem,an improved constant modulus fractionally spaced equalizer (CMA-FSE) based on signal-to-noise (SNR) estimation was proposed.The algorithm combined the fractionally spaced equalizer (FSE) and constant modulus algorithm (CMA) for blind equalization of wireless ultraviolet channels.The input SNR was measured by the mean square value of the received signal,and it was used to determine the best iterative step to ensure the convergence of the equalization algorithm.Simulation results show that the improved CMA-FSE algorithm can converge rapidly under various SNR,and it can effectively suppress ISI and improve the BER performance of the system.Compared with the existing algorithms,the improved algorithm is more useful in channel tracking and noise suppression.…”
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