Open Access. Powered by Scholars. Published by Universities.®
Numerical Analysis and Scientific Computing Commons™
Open Access. Powered by Scholars. Published by Universities.®
- Discipline
-
- Engineering (4189)
- Artificial Intelligence and Robotics (4163)
- Computer Engineering (3961)
- Operations Research, Systems Engineering and Industrial Engineering (3946)
- Systems Science (3881)
-
- Databases and Information Systems (809)
- Programming Languages and Compilers (773)
- Social and Behavioral Sciences (268)
- Theory and Algorithms (217)
- Applied Mathematics (153)
- Physics (151)
- Software Engineering (146)
- Data Science (116)
- Other Computer Sciences (115)
- Statistics and Probability (113)
- Communication (107)
- Business (104)
- Life Sciences (104)
- Graphics and Human Computer Interfaces (94)
- Mathematics (92)
- Social Media (91)
- Numerical Analysis and Computation (85)
- Medicine and Health Sciences (82)
- Electrical and Computer Engineering (72)
- Systems Architecture (65)
- OS and Networks (62)
- Information Security (59)
- Institution
-
- China Simulation Federation (3880)
- Singapore Management University (1060)
- University of Nebraska - Lincoln (747)
- Missouri University of Science and Technology (104)
- Old Dominion University (51)
-
- University of Arkansas, Fayetteville (48)
- University of Dayton (36)
- California Polytechnic State University, San Luis Obispo (33)
- Chapman University (28)
- City University of New York (CUNY) (28)
- Purdue University (25)
- Embry-Riddle Aeronautical University (24)
- Illinois State University (23)
- University of Kentucky (23)
- Central Bank of Nigeria (21)
- Southern Methodist University (20)
- Technological University Dublin (19)
- University of New Mexico (16)
- University of Montana (15)
- University of Nebraska at Omaha (15)
- Air Force Institute of Technology (13)
- Kennesaw State University (13)
- Claremont Colleges (12)
- LSU New Orleans (12)
- University of Nevada, Las Vegas (12)
- Virginia Commonwealth University (11)
- Central Washington University (10)
- Columbus State University (10)
- Loyola University Chicago (10)
- Edith Cowan University (9)
- Keyword
-
- Simulation (162)
- Deep learning (76)
- Path planning (76)
- Machine learning (75)
- Genetic algorithm (51)
-
- Data mining (47)
- Numerical simulation (47)
- Reinforcement learning (47)
- Modeling (46)
- Machine Learning (44)
- Virtual reality (44)
- Digital twin (43)
- Multi-objective optimization (42)
- Modeling and simulation (39)
- Particle swarm optimization (37)
- Optimization (35)
- Visualization (35)
- Social media (34)
- Deep reinforcement learning (30)
- Attention mechanism (29)
- Fault diagnosis (29)
- Neural network (29)
- Twitter (28)
- Feature extraction (27)
- UAV (27)
- Classification (26)
- Clustering (26)
- Neural networks (25)
- Simulation model (25)
- Artificial intelligence (24)
- Publication Year
- Publication
-
- Journal of System Simulation (3880)
- Research Collection School Of Computing and Information Systems (1024)
- The R Journal (708)
- Computer Science Faculty Publications (52)
- Physics Faculty Research & Creative Works (44)
-
- Theses and Dissertations (41)
- CBN Journal of Applied Statistics (JAS) (21)
- Annual Symposium on Biomathematics and Ecology Education and Research (20)
- Geosciences and Geological and Petroleum Engineering Faculty Research & Creative Works (19)
- Graduate Theses and Dissertations (19)
- Dissertations (15)
- Dissertations and Theses Collection (Open Access) (15)
- Electronic Theses and Dissertations (15)
- Graduate Student Theses, Dissertations, & Professional Papers (15)
- Chemistry Faculty Research & Creative Works (14)
- Computer Science and Computer Engineering Undergraduate Honors Theses (14)
- Master's Theses (14)
- The Summer Undergraduate Research Fellowship (SURF) Symposium (14)
- Doctoral Dissertations and Master's Theses (12)
- LSU New Orleans Theses and Dissertations (12)
- Dissertations, Theses, and Capstone Projects (11)
- Electrical & Computer Engineering Theses & Dissertations (11)
- Holland Computing Center: Faculty Publications (10)
- SMU Data Science Review (10)
- Computer Science Theses & Dissertations (9)
- Computer Science: Faculty Publications and Other Works (9)
- Interdisciplinary Informatics Faculty Proceedings & Presentations (9)
- Publications and Research (9)
- STAR Program Research Presentations (9)
- Williams Honors College, Honors Research Projects (9)
- Publication Type
- File Type
Articles 3331 - 3360 of 6663
Full-Text Articles in Numerical Analysis and Scientific Computing
Simulation Study On Price Control Model With Multiplicative Reference Effect, Yang Hui, Zhang Chen
Simulation Study On Price Control Model With Multiplicative Reference Effect, Yang Hui, Zhang Chen
Journal of System Simulation
Abstract: Considering customers' reference-dependent behavior, modeling and simulation study of the revenue management pricing problem with multiplicative reference effect was focused on, which defined the concept of multiplicative reference effect, described the characteristics of the reference effect function and the demand function with multiplicative reference effect, constructed the optimal control model with continuous time and continuous prices, proposed the Hamilton-Jacobi equation, provided simulation algorithm and designed simulation experiments to compare the pricing strategies under different demand circumstances. The simulation study shows that the reference effect has substantial impact on pricing paths and total revenues. The results provide management …
Simulation Of Coal Flow Movement Process In Coal And Gas Outburst Of Roadway Network, Zongxiang Li, Yadi Wang, Chunhua Zhang, Tianming Wang
Simulation Of Coal Flow Movement Process In Coal And Gas Outburst Of Roadway Network, Zongxiang Li, Yadi Wang, Chunhua Zhang, Tianming Wang
Journal of System Simulation
Abstract: In order to improve the simulation accuracy of the process in coal and gas outburst disaster period, time step method was put forward to describing the movement and accumulation of coal flow in roadway network when coal and gas outburst happened. Downward dip angles of tunnel were taken as the independent variables, model for distribution weight of coal output was built based on “Downward Priority” principle, and the model could adapt to downward roadway, nearly horizontal roadway and upward roadway. Strength change of outburst coal was established based on the collapse model. Combining with the coal and gas outburst …
Research And Application Of Cloud Manufacturing Service Platform For Crane, Yang Chen, Zhongjie Wang, Zhaohui Liu, Nana Yu
Research And Application Of Cloud Manufacturing Service Platform For Crane, Yang Chen, Zhongjie Wang, Zhaohui Liu, Nana Yu
Journal of System Simulation
Abstract: Based on the research fruits of cloud manufacturing, the cloud manufacturing platform for crane was focused on. Based on the connotation analysis of the crane manufacturing, the key technologies of manufacturing resource access and cloud service modeling were discussed. A multi-level dynamic matching model and a comprehensive matching algorithm were proposed. The construction and testing of the cloud manufacturing platform was carried out, and the future works were given.
Modeling And Numerical Simulation Of Micro-Tube Scale Effects In 3dp Process, Congping Chen, Xiaoyun Wang, Jieguang Huang, Li Bo
Modeling And Numerical Simulation Of Micro-Tube Scale Effects In 3dp Process, Congping Chen, Xiaoyun Wang, Jieguang Huang, Li Bo
Journal of System Simulation
Abstract: Wall slip and viscous dissipation are two main scale effects in 3DP (Three dimensional printing) process, which has influences on the material's flow properties and thermophysical properties and the printing quality. According to the two phenomena above, theoretic models of wall slip and viscous dissipation were established, respectively, and the software Polyflow was used to study the two scale effects and their interactions with molten ABS in micro-tubes of different radius. Simulation results show that wall slip level increases with the slip coefficient decreasing, and material's velocity decreases with the increase of tube radius; Viscous dissipation level decreases …
Simulation And Improvement Of Automobile Front Cover Assembly Work Based On Delmia, Lizhen Zhang, Shao Qi, Jiaqing Yang, Mengmeng Yang, Song Zheng, Dai Peng
Simulation And Improvement Of Automobile Front Cover Assembly Work Based On Delmia, Lizhen Zhang, Shao Qi, Jiaqing Yang, Mengmeng Yang, Song Zheng, Dai Peng
Journal of System Simulation
Abstract: In order to prevent potential occupational disease in automobile front cover assembly location caused by manual handling, a comprehensive evaluation and improvement method of ergonomics was proposed aiming at front cover assembly work ergonomics based on DELMIA. The ergonomics problems in automobile front cover assembly were evaluated quantitatively and comprehensively by using the methods of rapid upper limb assessment (RULA) and lifting equation analysis (NIOSH), and the process or tools were judged whether they should be improved according to the evaluation results. By simulation, analysis and improvement of front cover assembly work, the improvement plans which aimed at the …
Impact Of ‘Small World' Social Network Of Consumers On Pricing Decision In Duopoly Market, Li Feng, Wei Ying
Impact Of ‘Small World' Social Network Of Consumers On Pricing Decision In Duopoly Market, Li Feng, Wei Ying
Journal of System Simulation
Abstract: Noticing the influences of friends on consumers purchasing decisions, the impact of ‘small world' social network on price competition in a duopoly hotelling model was studied. A multi-agent based modeling approach was proposed to represent the consumers' decisions, which related to their connected friends in a social network, as well as the firms' pricing decisions. Simulation results reveal that the ‘small world' social network has a significant impact on the competing firms' pricing decisions. In specific, with the increasing number of consumers who are impacted by their friends, or the increasing likelihood of following friends' decisions, consumers then …
Terminal Guidance Radar Modeling Research Based On Feature Parameter Stream, Anmin Zhang, Lianhu Cui
Terminal Guidance Radar Modeling Research Based On Feature Parameter Stream, Anmin Zhang, Lianhu Cui
Journal of System Simulation
Abstract: Aiming at the contradiction between computation and fidelity of terminal guidance radar model, the essential need of simulation was analyzed. Comparing the advantages and disadvantages of the existing radar electronic warfare modeling and simulation method, a modeling method was proposed based on feature parameter stream, building terminal guidance radar model for behavior description, giving the model parameter correction method based on historical test data, and combining the modeling and historical test information together. The comparison of the simulation and test results shows that, it can accurately describe the behavior of terminal guidance radar using the least amount of …
Maneuver Models Tracking Filter Of Nonballistic Near Space Targets, Qin Lei, Junlong Li
Maneuver Models Tracking Filter Of Nonballistic Near Space Targets, Qin Lei, Junlong Li
Journal of System Simulation
Abstract: Because hypersonic vehicles in the near space often adopt the way of nonballistic maneuver flight with characteristics of high speed and lift-to-drag ratio, flying in atmosphere for a long time, whose motion trajectories are sometimes characterized by “hopping”, their flight altitudes, flight velocities and flight accelerations change. Targets maneuver are characterized by long period maneuver, which has brought great difficulties with ground defense system for maneuvering target localization and tracking. Traditional filtering algorithms obviously cannot give accurate target state estimation, tracking performance has declined. The overview of tracking filter ways was given, introducing four typical nonballistic maneuver models of …
Evaluation And Analysis Of Land Intensive Utilization Based On Parameters Optimization Of Svm, Chen Li, Jiaojiao Li, Shulu Xiao
Evaluation And Analysis Of Land Intensive Utilization Based On Parameters Optimization Of Svm, Chen Li, Jiaojiao Li, Shulu Xiao
Journal of System Simulation
Abstract: Based on relevant literature research of evaluation on intensive land-use both at home and abroad, the theory of Support Vector Machine (SVM) and Ant Colony Algorithm (ACO) was discussed. A new method of Correlation Coefficient, the Ant Colony Algorithm and Support Vector Machine (cACO-SVM) was proposed, which analyzed the relevant indicators to determine index set, using ACO, optimization of SVM parameters to draw a good penalty factor C and kernel function sigma and epsilon insensitive coefficient and training SVM, the method improved the training accuracy. Optimization of the land intensive utilization evaluation based on cACO-SVM was put forward, comparing …
Study Machine Tool Spindle Performance Reliability Based On Bayes Method, Yulun Chi, Haolin Li
Study Machine Tool Spindle Performance Reliability Based On Bayes Method, Yulun Chi, Haolin Li
Journal of System Simulation
Abstract: With the development of high precision machine tool, the reliability requirement is higher and higher for machine tool spindle. Reliability evaluation of spindle based on accelerated life testing is becoming a hot spot of research, and how to improve the precision of evaluation is one of the most important issues. According to the Weibulldistribution characteristic of machine tool spindle reliability, the spindle accelerated life reliability was studied by using the Bayes method. Due to the environment difference between the accelerated test load and the actual working load. The Bayes theory which used the environment difference factor, was introduced to …
Numerical Simulation And Aerodynamic Effect Research For Multi-Warhead Projection, Yuan Wu
Numerical Simulation And Aerodynamic Effect Research For Multi-Warhead Projection, Yuan Wu
Journal of System Simulation
Abstract: In order to study the complex aerodynamic problem in multi-warhead projection, and also establish the practical analysis method for nonlinear aerodynamic characteristics, the separation process was simulated by using CFD technology as well as Monte Carlo method for a statistical research, while effects of the projection condition, multi-body intervene and unsteady characteristic during the separation process were discussed. The present research shows that the main forms of the submunition movement are radial separation and pitching movement; the direction of mass center motion and attitude motion is determined by the projection condition, however the attitude motion is also sensitive to …
Research On Reactor Modeling Simulation Based On Neutron Equivalence Homogeneous Theory, Ma Jin, Zhibin Liu, Bingshu Wang, Xinhui Duan
Research On Reactor Modeling Simulation Based On Neutron Equivalence Homogeneous Theory, Ma Jin, Zhibin Liu, Bingshu Wang, Xinhui Duan
Journal of System Simulation
Abstract: A mathematical nuclear CANada Deuterium Uranium (CANDU) reactor steady and transient modelling simulation is built to get the axial thermal power distribution. With a relatively small number of nodes (100-500 nodes) to present the core, based upon two energy group Neutron Diffusion Formulation and a typical spatial discretization, according to equivalence theory and homogeneous method, this is accomplished by properly defining the nuclear properties (absorption and fission cross sections, diffusion coefficient, etc.) characterizing each of the nodes finished. The 390 channels thermal power distribution is calculated under Linux language environment. The thermal power difference is within 5% error with …
Study Of Im Parameter Identification Using Multi-Objective Particle Swarm Optimization With Proportional Guided Strategy, Huang Song, Tian Na, Wang Yan, Zhicheng Ji
Study Of Im Parameter Identification Using Multi-Objective Particle Swarm Optimization With Proportional Guided Strategy, Huang Song, Tian Na, Wang Yan, Zhicheng Ji
Journal of System Simulation
Abstract: A multi-parameter and multi-objective identification model of induction motor was established, and a multi-objective particle swarm optimization based on Pareto set and all personal-best positions guided strategy was proposed and applied to the identification model. Not considerring the weighted coefficient of each objective, Pareto set is able to avoid subjective choice of the coefficients of multi-objective identification and proportion strategy with all personal-best positions guided could balance the learning ability from personal-best positions and global-best position. Having verified the performance on Matlab/Simulink, the results show that the proposed algorithm is able to improve parameter identification accuracy, and has …
Study On Influence Of Community Structure On Opinion Topic Propagation Of Micro-Blog, Hengmin Zhu, Hu Wei, Ma Jing, Wei Jing
Study On Influence Of Community Structure On Opinion Topic Propagation Of Micro-Blog, Hengmin Zhu, Hu Wei, Ma Jing, Wei Jing
Journal of System Simulation
Abstract: Micro-blog gathers a large number of users, and community structure is a typical feature of Micro-blog network. In order to explore the influence of community structure on the opinion topic propagation of Micro-blog, users' psychology was analyzed for selecting their followees, and a model for constructing Micro-blog network was proposed which could modify community structure of network with a community factor. Experiments testify the effect of the community factor on micro-blog network structure, and use a SIR model to analyze the influence of different topic source nodes and community factors on the topic propagation of simulated networks. The result …
Simulation Investigation Of Rumor Spreading Model Base On Two-Layer Scale-Free Networks, Zhihua Qin, Yongmei Liu
Simulation Investigation Of Rumor Spreading Model Base On Two-Layer Scale-Free Networks, Zhihua Qin, Yongmei Liu
Journal of System Simulation
Abstract: Relationship network is a carrier of rumor spreading. Separating the media from the relationship network, a two-tier rumor spreading model was proposed based on tunable clustering scale-free network and SIQR spreading model. Meanwhile the rumor spreading rules of the new model were developed. In simulation experiments, the influence associated with the three parameters of the media layer was analyzed by using the Mult-Agent system Netlogo4.0.2. It is found that improving the sensitivity of the media, regulating media ethics and expanding the scope of the media can curb the spread of rumors.
Modeling And Simulation Of Magnetostrictive Impact Drive Mechanism, Zhao Ran, Quanguo Lu
Modeling And Simulation Of Magnetostrictive Impact Drive Mechanism, Zhao Ran, Quanguo Lu
Journal of System Simulation
Abstract: A model of magnetostrictive impact drive mechanism (IDM) was built to predict the step size and velocity, in which the dynamical model and the second order non-linear model of magnetostrictive material based on Jiles-Atherton model were considered. The simulation model was developed by utilizing MATLAB /Simulink software, and the data of IDM's displacement and velocity was obtained based on the model. The experimental system was built to testify the given model. The results illustrate that the error between experiment and simulation results are less than 15% within the range of driving current 0.2~0.4A and working frequency 10~100Hz. The …
Simulation And Analysis On Coupled Vibration Of Fracturing Truck Process, Chuan Wang, Zhenqiang Xie, Guorong Wang, Shimin Zhang, Hou Wen, Li Jun, Zhou Xu, Chu Fei
Simulation And Analysis On Coupled Vibration Of Fracturing Truck Process, Chuan Wang, Zhenqiang Xie, Guorong Wang, Shimin Zhang, Hou Wen, Li Jun, Zhou Xu, Chu Fei
Journal of System Simulation
Abstract: In order to study the effect of vibration of engine and fracturing pump on truck body during fracturing operation, lumped parameter method and state space method were used to build multi-body dynamics coupling model between the balanced suspension, tires, engine, fracturing pump and the frame. Based on this model, the MATLAB/Simulink software was applied to simulate the characteristic of rotational speed, stiffness and damping of the 2 500 fracturing truck during fracturing operation. The results show that the maximum intensity of vertical vibration is stronger hundreds times than pitch motion. Vibration frequency range of 0~10 Hz …
Multipurpose Image Watermarking Algorithm For Progressive Transmission, Jianqiu Jin, Bangqing Cao, Wang Xun, Haiyan Wu, Bailing Yang
Multipurpose Image Watermarking Algorithm For Progressive Transmission, Jianqiu Jin, Bangqing Cao, Wang Xun, Haiyan Wu, Bailing Yang
Journal of System Simulation
Abstract: Multipurpose watermarking, which has the property of both robust and semi-fragile watermarking, can realize two or more purposes in one algorithm, e.g. copyright protection and content authentication usually. It can be classified into multi-segment and single-segment watermark embedding. The latter is better in invisibility, but more challenging than the former. A multi-purpose image watermarking algorithm with single-segment watermark embedding for progressive transmission was proposed. It embedded a watermark abstracted from original image into middle and low-frequency coefficients of block DCT transform. In the watermark embedding process, the intensity of watermark could be dynamically adjusted according to the local texture …
Carrier Disposition Pwm Control With No Dead Zone For Tnpc Inverter, Wenjuan Li, Feng Jie, Wang Chao
Carrier Disposition Pwm Control With No Dead Zone For Tnpc Inverter, Wenjuan Li, Feng Jie, Wang Chao
Journal of System Simulation
Abstract: After the addition of dead zone, the carrier disposition PWM modulation method could have some problems, such as distortion of current waveform and decreasing of voltage utilization ratio. Taking the TNPC type three-level inverter as a researching object, a novel method of the carrier disposition PWM modulation with no dead zone for three-level inverter was proposed, in which three PWM modulation signals were generated by using triple carrier wave. By analyzing the effect caused by the dead zone in different operating states, on and off rules of power switches were derived. Simulation results in MATLAB/Simulink environment show that the …
Parameters Optimization For Variable Speed And Pitch Controller Of Wind Turbine Based On Bladed, Gao Feng, Wang Wei, Xinmei Ling
Parameters Optimization For Variable Speed And Pitch Controller Of Wind Turbine Based On Bladed, Gao Feng, Wang Wei, Xinmei Ling
Journal of System Simulation
Abstract: Due to nonlinearity and time-varying parameters of wind power system, its controller parameters are hard to be calculated and tuned during the process of design and optimization. The linear model which is suitable for parameters tuning was built through model linearization of Bladed and model reducing-order algorithm. The PI parameter was tuned with the IM-PSO (Immune Memory Particle Swarm Optimization). Moreover, the gain coefficient of optimal torque control and the gain divisor of adaptive PI pitch control conducted optimizing calculation based on the identification parameters of Bladed. A set of optimization method for variable speed and pitch controller …
Decoupling Control Of Poultry Hatching Process Based On Α-Order Neural Network Inverse System, Guoxiong Zhou, Junchao Li, Aibin Chen
Decoupling Control Of Poultry Hatching Process Based On Α-Order Neural Network Inverse System, Guoxiong Zhou, Junchao Li, Aibin Chen
Journal of System Simulation
Abstract: The poultry hatching process is a complex biological process, in which coupling between temperature, humidity and oxygen concentration is serious, and conventional control methods can not guarantee the stability of three parameters. An α-order inverse system decoupling control method for poultry hatching process was proposed. The three factors were grouped by coupling degree analysis, using α-order neural network inverse system to control the two parameters whose coupling degree is stronger, another parameter would be controlled by fuzzy controller, thus ensuring the stability of the three parameters. The experimental results show the effectiveness of this method.
Performance Evaluation Of Automated Warehouse Based On Markov Chain, Xiangguo Ma, Tongjuan Liu, Wang Li, Rongfen Jiang
Performance Evaluation Of Automated Warehouse Based On Markov Chain, Xiangguo Ma, Tongjuan Liu, Wang Li, Rongfen Jiang
Journal of System Simulation
Abstract: It is necessary that the way of evaluating the AS/RS is scientific and feasible. However the majority of existing evaluate methods is static and qualitative, whose analysis results deviation, to a certain extent, from the real data. To support the improvement of the AS/RS use, the performance of AS/RS with a dynamic and quantitative method was analyzed. Specifically, the automated stereoscopic warehouse performance evaluation indicators were established; by using Marco analysis, the mathematical model of performance evaluation was got; based on ARENA software, the feasibility and validity of the mathematical solution model were verified.
Dynamics Analysis Of Flue Gas Compression System In Oxy-Coal Fired Boiler, Jianqiang Gao, Zhang Chen
Dynamics Analysis Of Flue Gas Compression System In Oxy-Coal Fired Boiler, Jianqiang Gao, Zhang Chen
Journal of System Simulation
Abstract: Taking the flue gas compression system in a 300MW oxy-coal fired boiler unit as an object of study by concept design, math model of gas compressor and gas cooler were established with the method of lumped parameter, and dynamic simulation of flue gas compression system was developed. The disturbance experiments on coal-feeder speed and flue gas compressor speed, etc. were carried out based on B-MCR stable condition. As a result, the operating parameters of gas compressor have a more sensitive response and larger change magnitude when the perturbation of coal feeder speed and gas compressor speed is disturbed; when …
Simulation And Verification For Low Altitude Ground Reflection Characteristics Of Low-Frequency Broadband Signal, Zhannan Ma, Feifei Du, Jinxi Chen
Simulation And Verification For Low Altitude Ground Reflection Characteristics Of Low-Frequency Broadband Signal, Zhannan Ma, Feifei Du, Jinxi Chen
Journal of System Simulation
Abstract: Low frequency broadband signals have advantages in improving radar target recognition ability. To determine the ground reflectance of broadband signal at low altitude, the ground reflectance of different frequency points of narrowband is used to compose the equivalent ground reflectance of broadband signal based on ground reflection model. The relationship between ground reflectance and ground characteristics (relative dielectric constant, conductivity), grazing angle, and polarization characteristics were discussed in detail. The reflectance in typical environment was verified using the method of antenna pattern test at low altitude. Results show that the reflectance simulation model was effective, and the model provides …
Adaptive Mutative Scale Chaos Particles Swarm Optimization Based On Logistic Mapping, Yanyang Zeng, Yunxia Feng, Wentao Zhao
Adaptive Mutative Scale Chaos Particles Swarm Optimization Based On Logistic Mapping, Yanyang Zeng, Yunxia Feng, Wentao Zhao
Journal of System Simulation
Abstract: To overcome the shortcomings of Particle Swarm Optimization (PSO), an Adaptive Mutative Scale Chaos Particles Swarm Optimization (ACPSO) based on Logistic Mapping was proposed. The chaos method was used to initialize the particles. The adjustment method of the inertia weight depended on the particle's fitness; it could avoid premature convergence for the particles. When the particles fell into the local optimum, mutative scale chaos optimization strategy was adopted to adjust the optimal particles. To test the effectiveness of the algorithm, three representative algorithms were compared with. The results show that the algorithm has high convergence speed and high precision.
Novel Distance Measure Between Intuitionistic Fuzzy Sets, Luo Xiao, Weimin Li
Novel Distance Measure Between Intuitionistic Fuzzy Sets, Luo Xiao, Weimin Li
Journal of System Simulation
Abstract: Distance measure is a basic and crucial notion of set theory. Since the intuitionistic fuzzy sets (IFSs) were put forward, distance between IFSs has been widely concerned by some researchers and many types of measures have been proposed. Most of them have counter-intuitive cases and ignore the characteristics of three parameter properties of IFSs. The concept of fuzzy distance was introduced, which embodied the characteristics of classical distance and highlights the characteristics of hesitance index simultaneously. A new fuzzy distance measure was proposed, and the corresponding proof was included. An artificial benchmark test set of distance measure was constructed …
Visualization Of Multi-Dimensional Effectiveness Indicator Of Weapon System Of Systemsbased On Fusion Manifold Learning, Jianfei Ding, Guangya Si, Yafeng Shi, Liu Yi
Visualization Of Multi-Dimensional Effectiveness Indicator Of Weapon System Of Systemsbased On Fusion Manifold Learning, Jianfei Ding, Guangya Si, Yafeng Shi, Liu Yi
Journal of System Simulation
Abstract: It is an important way to compare the comprehensive characteristics of weapon system of systems (WSoS) by means of visualization method to display the various effectiveness indicators information of WSoS construction planning scheme in simulation test. A visualization method for multi-dimensional effectiveness indicator was proposed based on fusion manifold learning. The indicator items and scheme items were converged from high-dimensional space to the same two-dimensional space. The density calculation was used to calculate the effect degree between the multidimensional indicator and scheme. The final multidimensional indicator visualization effect was achieved by radiological calculation. Two sets of experiments were …
Model-Based Design And Simulation For An Aircraft Flight Control System, Chi Yue, Shan Dong, Zhenxin Yan, Hei Peng
Model-Based Design And Simulation For An Aircraft Flight Control System, Chi Yue, Shan Dong, Zhenxin Yan, Hei Peng
Journal of System Simulation
Abstract: The process and method of model-based system engineering (MBSE) and its implementation in highly complex flight control system were clearly introduced. By comparing with traditional design methods, MBSE applied models as baseline instead of documents to handle the complexity of modern systems. The top-down workflow is more capable of ensuring coherence of design process, completeness of requirements verification and system testability. With the simulation of system model, the integrality of design and verification process, system function behavior simulation, implementation of the failure mode, effect analysis (FMEA) and the decreasing of system risk grade are well achieved.
Construction Method Of Reconnaissance Assistant Decision Model, Guo Rui, Xiaoyuan He, Zhu Feng
Construction Method Of Reconnaissance Assistant Decision Model, Guo Rui, Xiaoyuan He, Zhu Feng
Journal of System Simulation
Abstract: The fog of war in modern battlefield information big data generated by the judgment of the battlefield commander had a strong interference, which could increase the difficulty of decision-making. The use of reconnaissance and early warning forces is the beginning of mastering the initiative of the battlefield. Intelligent auxiliary investigation command is to achieve this goal. On the basis of the simulation system field data of a certain operations, through extracting the key information of reconnaissance order, combined with establishing the labels of reconnaissance effect, an auxiliary decision model aimed at reconnaissance and early warning is designed. This model …
Complexity Analysis Of Joint Operational Network Information System, Peng Jun, Mingzhi Zhang
Complexity Analysis Of Joint Operational Network Information System, Peng Jun, Mingzhi Zhang
Journal of System Simulation
Abstract: Based on the theory of complex networks, the structure and characteristics of joint operational network information system (JONIS) were analyzed from the perspectives of heterogeneous directional weighted network topology, strong degree and its centralities. It is found that the combat network based on JONIS has characteristics of small-world and scale-free, with a large average weighted aggregation coefficient and a small average weighted path length, showing a similar power-law distribution. In the example network, command centers, satellites, support force, and early warning unit all have larger strong degrees and centralities. These platforms as the center of gravity and fragile nodes …