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11661
Topology aggregation model based on focus folding for network simulation
Published 2012-07-01“…High resource consumption is the main problem of large-scale network simulation,to solve this problem,the topology aggregation model based on focus folding for network simulation was put forward.According to the abstract coefficients,the terminal node abstract,tree shrinking,and cut-edge abstract algorithm was adopt to abstract the topology.The test results show that,this technology can reduce the router node about 30 percent,the link between routers about 13.74 percent,total node about 98.48 percent,and total link about 96.1 percent.Simulating DDoS on the topology with 2.5 million nodes only need 400s time and 2 710MB memory.Take Shandong topology as an example to simulate DDoS,after abstracted,simulation memory and time have been reduced about 75.34 percent and 91.76 percent respectively.Take Beijing topology as an example to simulate worm,after abstracted,simulation memory and time have been reduced about 68.84 percent and 38.64 percent respectively,which prove that this mode can improve the simulation scale and efficiency and decrease the resource consumption and running time of simulation.…”
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11662
MapFuse: Complete and Realistic 3D Modelling
Published 2018-01-01“…The system combines the result of a SLAM algorithm and secondly a simple initial model of the same environment in a probabilistic way. …”
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11663
Optimal Solutions for Constrained Bimatrix Games with Payoffs Represented by Single-Valued Trapezoidal Neutrosophic Numbers
Published 2021-01-01“…Moreover, an application example is examined to verify the effectiveness and superiority of the developed algorithm. Finally, a comparison analysis between the proposed and the existing approaches is conducted to expose the advantages of our work.…”
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11664
Research on Taxi Pricing Model and Optimization for Carpooling Detour Problem
Published 2019-01-01“…This paper builds a multiobjective optimization model for solving the taxi carpooling with detour problem and designs a genetic algorithm to determine a fair pricing scheme for riders and drivers. …”
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11665
Sliding Mode Output Feedback Control of a Flexible Rotor Supported by Magnetic Bearings
Published 2001-01-01“…A new sliding mode feedback algorithm is applied to control the vibration of a flexible rotor supported by magnetic bearings. …”
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11666
Presenting a one-objective optimization model to determine the reliability of the components of a coherent system
Published 2023-11-01“…Purpose: In this paper, the amount required to increase the reliability of the components of a coherent system is determined so that the cost of this increase is minimized and the reliability of the whole system is not less than the predetermined value.Methodology: In this research, after introducing the objective and constraint functions in the optimization problem, the Lagrange method is used and then the problem is solved by presenting an algorithm. In this article, several cost functions are considered, and then the results are presented in the general case for a coherent system and then for two special cases, series-parallel and parallel-series systems.Findings: In this article, two numerical examples are presented and solved. …”
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11667
Computationally Effective Modeling of Cold Rolling: Application to Al Alloys
Published 2024-12-01“…An accurate and numerically efficient description of the rolling process is a challenging task since the degree of computational accuracy is directly related to the complexity of the algorithm employed. In the most general case, finite element models (FEM) are used for the simulation of deformation processes; however, these techniques require significant computational time. …”
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11668
Alignment Detection Technology of Chang’e-6 Primary Package Container
Published 2024-12-01“…To address challenges such as complex backgrounds, uneven lighting, and reflective surfaces, this paper introduces an alignment detection method that integrates YOLO object recognition, Devernay subpixel edge detection, and the RANSAC fitting algorithm. By employing both linear and elliptical fitting techniques, the method accurately determines the median line of the primary packaging container, ensuring precise alignment detection. …”
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11669
A Malware Detection Scheme Based on Mining Format Information
Published 2014-01-01“…When the selected features were trained using classification algorithms, the results of our experiments indicate that the accuracy of the top classification algorithm is 99.1% and the value of the AUC is 0.998. …”
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11670
Transition of thermally induced flow in a square cavity using Spectral Method
Published 2025-01-01“…This study presents a novel mesh-free method for simulating natural convection in a square cavity filled with Newtonian fluid. The proposed algorithm integrates mesh-free Spectral methods with the Moving Collocation Element (MCOE) technique and employs a strong formulation to solve the nonlinear governing equations. …”
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11671
Ranking Influential Nodes in Complex Networks with Information Entropy Method
Published 2020-01-01“…However, these methods offer a limited improvement in algorithm performance because diversity between different attributes is not properly considered. …”
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11672
Distributed IOS-SM transmission scheme with joint antenna and IOS unit selection for high-speed railway scenario
Published 2023-04-01“…A distributed intelligent omni-surface (IOS) -assisted spatial modulation (SM) transmission scheme was proposed to address the problem of transmission rate degradation caused by the high signal penetration loss in closed carriages in the high-speed railway scenarios.Firstly, SM technology was utilized to ensure that the indexed information section was not affected by penetration loss.Then, to reduce the high path loss and power loss of the long-range IOS windows, the distributed IOS was selected by traversal algorithm according to the principle of maximizing the received signal-to-noise ratio, and the best IOS window was activated to transmit the SM modulated information.Finally, to reduce the impact of the missing direct view path gain on the overall system performance, the antenna removal principle and the sequential selection method were used to dynamically and selectively activate the receiving antenna and IOS unit under the power consumption model.The simulation results show that the proposed scheme is more suitable for the high-speed railway wireless communication scenario than the conventional relay-forwarding and reconfigurable intelligence surface -SM (RIS-SM) schemes.And with the power loss model, the distributed IOS-SM scheme chosen by the combined antenna and IOS unit is still able to guarantee high performance transmission of the system.…”
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11673
Feature Extraction for Evaluating the Complexity of Electromagnetic Environment Based on Adaptive Multiscale Morphological Gradient and Nonnegative Matrix Factorization
Published 2022-01-01“…In this paper, a feature extraction method for electromagnetic environmental signals based on adaptive multiscale morphological gradient filtering and a nonnegative matrix factorization algorithm is proposed. First, the electromagnetic environment signal is filtered by AMMG, and then the filtered signal is processed by NMF for feature extraction. …”
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11674
Development and Performance Analysis of Pneumatic Soft-Bodied Bionic Actuator
Published 2021-01-01“…Based on Yeoh’s second-order constitutive model of silica gel, the deformation analysis model of the actuator is established, and the rationality of the structure design and motion forms of the actuator and the accuracy of the deformation analysis model are verified by using the numerical simulation algorithm. According to the physical model of the pneumatic soft-bodied bionic actuator, the motion and dynamic characteristics of the actuator are tested and analyzed, the curves of motion and dynamic characteristics of the actuator are obtained, and the empirical formula of the bending angle and driving torque of the actuator is fitted out. …”
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11675
Adaptive Fuzzy Type-II Controller for Wheeled Mobile Robot with Disturbances and Wheelslips
Published 2021-01-01“…Finally, the simulation is setup to verify the effectiveness of the presented algorithm. The simulation results show that, in comparison with the corresponding fuzzy type-I controller, the performance of the adaptive fuzzy type-II controller is better, i.e., the position error is smaller and the velocity is almost smooth under the conditions that the reference trajectory is changed, and the system is affected by wheel slips and external disturbances.…”
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11676
Feature enhancement and bilinear feature vector fusion for text detection of mobile industrial containers
Published 2022-07-01“…In the real factory environment, due to factors such as dim light, irregular text, and limited equipment, text detection becomes a challenging task.Aiming at this problem, a feature vector fusion module based on bilinear operation was designed and combined with feature enhancement and semi-convolution to form a lightweight text detection network RGFFD (ResNet18 + Ghost Module + FPEM(feature pyramid enhancement module)) + FFM(feature fusion module) + DB (differentiable binarization)).Among them, the Ghost module was embedded with a feature enhancement module to improve the feature extraction capability, the bilinear feature vector fusion module fused multi-scale information, and an adaptive threshold segmentation algorithm was added to improve the segmentation capability of the DB module.In the real industrial environment, the RGFFD detection speed reached 6.5 f/s, when using the embedded device UP2 board for text detection of container numbers.At the same time, the detection speed on the public datasets ICDAR2015 and Total-text reached 39.6 f/s and 49.6 f/s, respectively.The accuracy rate on the custom dataset reached 88.9%, and the detection speed was 30.7 f/s.…”
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11677
Obstacle Avoidance Path Planning for Double Manipulator based on Improved Artificial Potential Field Method
Published 2020-03-01“…An obstacle avoidance path planning algorithm based on improved artificial potential field method is proposed for dual 6-DOF manipulator. …”
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11678
Variational Quantum Simulation: A Case Study for Understanding Warm Starts
Published 2025-01-01“…The barren plateau phenomenon, characterized by loss gradients that vanish exponentially with system size, poses a challenge to scaling variational quantum algorithms. Here we explore the potential of warm starts, whereby one initializes closer to a solution in the hope of enjoying larger loss variances. …”
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11679
Interaction Design of Educational App Based on Collaborative Filtering Recommendation
Published 2022-01-01“…Simultaneously, this paper combines user activity, item popularity, and time factors to comprehensively measure user visibility of items and incorporates them into the collaborative filtering recommendation algorithm in order to effectively mitigate the effects of data sparsity and user selection bias and improve recommendation results.…”
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11680
Detection of Adulteration in Canola Oil by Using GC-IMS and Chemometric Analysis
Published 2018-01-01“…The results evaluated by canonical discriminant analysis (CDA) algorithm indicated that the HOG-MPCA-CDA model was feasible to discriminate the canola oil adulterated with other oils and to precisely classify different levels of each adulterant oil. …”
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