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2121
Low-Dosed X-Ray Computed Tomography Imaging by Regularized Fully Spatial Fractional-Order Perona-Malik Diffusion
Published 2013-01-01“…Experimental results show that besides good ability in edge preserving, the new scheme also has good stability for iteration number and can avoid artifacts and speckle effect with suitable parameters.…”
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2122
What defines 'enough' information? How policy workers make judgements and decisions during information seeking: preliminary results from an exploratory study
Published 2006-01-01“…Also revealed was the importance of developing a framework, against which the judgment of enough information can be made, and the fluid and iterative nature of these judgments. <br><b>Conclusion.…”
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2123
Spectral clustering-based energy-efficient resource allocation algorithm in heterogeneous cellular ultra-dense network
Published 2021-07-01“…In order to solve problems of high power consumption, spectrum shortage and low energy efficiency in the ultra-intensive 5G mobile communication scenario, a resource allocation algorithm based on the maximum energy efficiency for the two-layer heterogeneous cellular non-orthogonal multiple access network was proposed.The original NP-hard optimization problem on the downlink communication link of ultra-dense scene was divided into two subproblem, such as frequency resource allocation and power allocation, which became a deterministic constraint optimization problem.The frequency resource allocation scheme of different user groups was obtained by using base station clustering based on the improved k-means algorithm and users grouping based on spectral clustering algorithm.The fraction of energy efficiency optimization was transformed into a solvable continuous convex optimization problem and power distribution was realized by Dinkelbach method, and the Lagrange multiplier iterative algorithm, respectively.Jointly optimize system energy efficiency in terms of base station clustering, user grouping, resource block allocation and power allocation, which minimized the inter-cluster interference and intra-cluster interference of the base station efficiently.The simulation results show that the proposed algorithm is better on energy efficiency and computational efficiency compared with existing algorithms.…”
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2124
Improved LDPC-based short-range frequency-hopping wireless communication system
Published 2017-12-01“…In short-range wireless communication system(SWCS),the complex scenarios make its transmission face the diverse interference,and lower hardware resource leads to its limited anti-interference capability.To achieve the reliable transmission,a frequency-hopping-based SWCS (FH-SWCS)with improved LDPC (I-LDPC) code was constructed.In FH-SWCS,a low-complexity check-sum updating(LCU)algorithm was proposed to reduce the amount of computation.LCU-based multi-threshold bit flipping (LCU-MTBF) algorithm was given to increase the reliability of bit-flipping, improving decoding performance and reduce the complexity of decoding.The simulation results demonstrate that LCU is suitable for multiple hard decisions decoding algorithm,and it can reduce the computational complexity of original decoding algorithm without affecting its performance.When BER is 10<sup>−5</sup>,and iterations number is 5,0.15dB performance gain can be achieved,and the number of additions algorithm can be reduced about 40% in LCU-MTBF.In FH-SWCS with I-LDPC,when BER is 10<sup>−4</sup>,and SNR is 15dB,the performance gain about 7dB can be achieved to improve the anti-interference of the system effectively.…”
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2125
IBOA-Based Optimization of Cross-Sectional Dimension of Rods for a 3-RRR PPM to Minimize Energy Consumption
Published 2021-01-01“…Therefore, to properly handle the constraints, an improved butterfly optimization algorithm (IBOA) is presented to ensure that the new iterated point always falls into the feasible region according to the butterfly optimization algorithm (BOA). …”
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2126
Fast Matching Method of UAV Aerial Photography Enhanced Low Illumination Image
Published 2022-01-01“…Aiming at the problems of insufficient image contrast in three-dimensional reconstruction of UAV in low illumination environment and the unstable iteration times of the RANSAC algorithm in the feature matching process, real-time matching method of UAV aerial image is proposed. …”
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2127
An examination of the health information seeking experiences of women in rural Ontario, Canada
Published 2006-01-01“…</b> Interview transcripts were organized using NVivo software (version 6) and analysed using a coding scheme iteratively developed by both authors. <br><b>Results.…”
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2128
Small-Animal Imaging Using Clinical Positron Emission Tomography/Computed Tomography and Super-Resolution
Published 2012-05-01“…Stepped images were postprocessed with iterative deconvolution to produce super-resolution images. …”
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2129
Automated identification of bulk structures, two-dimensional materials, and interfaces using symmetry-based clustering
Published 2025-02-01“…This work proposes a robust solution for identifying and classifying a wide spectrum of materials through an iterative technique, called symmetry-based clustering (SBC). …”
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2130
Valuing students’ mindsets in essay compositions: Active learning and feedback approaches
Published 2025-01-01“…During a 12-week course, 91 undergraduate students engaged in writing various types of academic essays, receiving iterative feedback and participating in collaborative writing tasks aimed at enhancing both technical proficiency and metacognitive awareness. …”
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2131
Random Vibration Analysis of Coupled Three-Dimensional Maglev Vehicle-Bridge System
Published 2019-01-01“…The equation of motion of a real three-span space continuous girder bridge is established by using finite element methods. A separated iteration method based on the precise integration method and the Newmark method is introduced to solve the state-space equation for the maglev vehicle and the equation of motion for the bridge. …”
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2132
Inverse problems with the digital image correlation: approach and applications
Published 2021-06-01“…In addition, thanks to ad-hoc developed iterative algorithms, non-linear phenomena related to high and localized stress/strain states, can be captured successfully. …”
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2133
Character education based on the value sand norms of the Indonesian philosophical system
Published 2025-02-01“…In order to delve into the realm of interpretive studies, there is a need to acquire "iterative" (spiral) data, deconstructing the ontological, epistemological, and axiological dimensions of the Pancasila philosophy. …”
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2134
Day-ahead Clearing Method for High-proportion Hydropower Electricity Market
Published 2023-01-01“…How to handle the complex characteristics of cascade hydropower and solve the competitive spillage and power shortage problem is one of the key issues in the clearing of the high-proportion hydropower day-ahead spot electricity market.Therefore,combined with the project in Yunnan,this paper proposes a day-ahead clearing method for the high-proportion hydropower electricity market.In this method,the hydraulic constraints in the clearing model are replaced by the post-hydraulic check.Combined with the essential causes of competitive spillage and power shortage problems,the paper constructs a conditional constraint set including cascaded hydropower linkage constraints and spillage control constraints,and corresponding trigger conditions respectively.Moreover,the constraint boundaries are dynamically updated to gradually reduce competitive spillage and power shortage in the iterative solution procedure.A settlement compensation strategy is finally designed to provide corresponding benefits for plants involved in solving the spillage.The proposed method is validated by a real-world hydropower-dominated provincial system ranking second in China.The results show that competitive spillage and power shortage can be avoided or reduced substantially.It is demonstrated that this method meets the requirements of practicability and timeliness for day-ahead spot clearing of hydropower-dominated provincial power systems.…”
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2135
Robust multiview subspace clustering method based on multi-kernel low-redundancy representation learning
Published 2021-11-01“…Considering the impact of high dimensional data redundancy and noise interference on multiview subspace clustering, a robust multiview subspace clustering method based on multi-kernel low redundancy representation learning was proposed.Firstly, by analyzing and revealing the redundancy and noise influence characteristics of data in kernel space, a multi-kernel learning method was proposed to obtain a robust low-redundancy representation of local view-specific data, which was utilized to replace the original data to implement subspace learning.Secondly, a tensor analysis model was introduced to carry out multiview fusion, so as to learn the potential low-rank tensor structure among different subspace representations from global perspective.It would capture the high-order correlation among views while maintaining their unique information.In this method, robust low-redundancy representation learning, view-specific subspace learning and fusion potential subspace structure learning were unified into the same objective function, so that they could promote each other during iterations.A large number of experimental results demonstrate that the proposed method is superior to the existing mainstream multiview clustering methods on several objective evaluation indicators.…”
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2136
Biframes and some of their properties
Published 2022-08-01“…Abstract Recently, frame multipliers, pair frames, and controlled frames have been investigated to improve the numerical efficiency of iterative algorithms for inverting the frame operator and other applications of frames. …”
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2137
A New Multiphase Soft Segmentation with Adaptive Variants
Published 2013-01-01“…Second, we develop a bidirection projected primal dual hybrid gradient (PDHG) algorithm for iterations of membership functions. Third, we also develop a novel algorithm for explicitly computing the projection from RK to simplex ΔK-1 for any dimension K using dual theory, which is more efficient in both coding and implementation than existing projection methods.…”
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2138
Analyzing Thermal Module Developments and Trends in High-Power LED
Published 2014-01-01“…The computing core of the VCTM program employs the theoretical thermal resistance analytical approach with iterative convergence stated in this study to obtain a numerical solution. …”
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2139
Validation and Calibration of an Agent-Based Model: A Surrogate Approach
Published 2020-01-01“…In this paper, we present a surrogate analysis method for calibration by combining supervised machine-learning and intelligent iterative sampling. Without any prior assumptions regarding the distribution of the parameter space, the proposed method can learn a surrogate model as the approximation of the original system with a relatively small number of training points, which will serve the needs of further sensitivity analysis and parameter calibration research. …”
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2140
Stochastic Modeling and Availability Optimization of Nuts Manufacturing Plant Using Markov Process and Particle Swarm Optimization
Published 2024-12-01“…It is revealed that PSO predicts the optimal availability 0.9999 at population size 50 after 50 iterations. The convergence rate of PSO is very fast in prediction of the availability of nut manufacturing plant. …”
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