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Articles 3091 - 3120 of 3961

Full-Text Articles in Numerical Analysis and Scientific Computing

Intelligent Sandbox For Geography Teaching, Xianli Ji, Yulong Ding, Shuanghua Yang Dec 2019

Intelligent Sandbox For Geography Teaching, Xianli Ji, Yulong Ding, Shuanghua Yang

Journal of System Simulation

Abstract: An intelligent sandbox geography teaching demonstration system combining the augmented reality technology and related geographic knowledge is designed and implemented on the Unity3D platform. The system has functions of deep data processing, projection matrix transformation, terrain rendering, fluid simulation, physical characteristics, adding entities along the slope, changes in sunshine angle, gesture interaction, etc., which can render virtual terrain and scene in real time according to the change of the sandbox. Students can interact with the system in projection correction, adding entities, seasonal switching, weather effects, disaster simulation and other scenarios and learn knowledge points such as contour lines, …

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Spatiotemporal Mode Analysis Of Urban Dockless Shared Bikes Based On Point Of Interests Clustering, Zhang Fang, Bin Chen, Yanghua Tang, Dong Jian, Chuan Ai, Xiaogang Qiu Dec 2019

Spatiotemporal Mode Analysis Of Urban Dockless Shared Bikes Based On Point Of Interests Clustering, Zhang Fang, Bin Chen, Yanghua Tang, Dong Jian, Chuan Ai, Xiaogang Qiu

Journal of System Simulation

Abstract: The city’s dockless shared bikes have developed rapidly, and its features of convenience, economy and efficiency have been widely welcomed. The digital footprint they generate reveals the movement of people in time and space within the city, which makes it possible to quantify the activities of people in the city using shared bikes. In this paper, based on the collected shared bikes data of Beijing, a clustering method based on the point of interests is proposed to divide the urban space, so as to construct a mobile network of urban shared bikes, and analysis the spatiotemporal mode of bike …

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Cooperative Vehicle Positioning Method Based On V2x Enhanced Gps, Jiuling Wang, Shaobo Wu, Yuanli Zhang, Jiahui Qiu, Liu Qi Dec 2019

Cooperative Vehicle Positioning Method Based On V2x Enhanced Gps, Jiuling Wang, Shaobo Wu, Yuanli Zhang, Jiahui Qiu, Liu Qi

Journal of System Simulation

Abstract: In order to further improve the vehicle positioning accuracy and adaptability to the environment, V2X (vehicle to everything) communication network is used for auxiliary positioning to enhance the GPS/DR integrated positioning. Firstly, the three subsystems of GPS, DR and V2X auxiliary positioning independently perform filtering estimation, and then a better estimation from the GPS and V2X auxiliary positioning is selected to conduct global optimal fusion with DR, and finally the three sub-filters are reset with the feedback of the optimal result. Simulation results show that when the GPS signal is seriously affected by multipath interference, the positioning performance of …

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Differential Evolution Quantum Particle Swarm Optimization For Parameter Estimation Of Fractional-Order Chaotic System, Dong Ze, Ma Ning Dec 2019

Differential Evolution Quantum Particle Swarm Optimization For Parameter Estimation Of Fractional-Order Chaotic System, Dong Ze, Ma Ning

Journal of System Simulation

Abstract: In order to accurately estimate the unknown parameters for fractional order chaotic systems, a quantum particle swarm optimization algorithm based on differential quantum properties is proposed. On the basis of quantum behaved particle swarm optimization, variation, crossover and selection operation are utilized by particles, which can better keep the diversity of the particles in the population, avoiding the local optimum in the later phase of the iteration. The multi-neighborhood local search strategy is used for particles’ local search to improve search precision. Standard test functions are used to test the algorithm, and the test results show that the …

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Modeling Of Capability Relations Oriented To The Evolution Of Operational System-Of-Systems, Xia Lu, Mingzhi Zhang, Jingyu Yang, Changliang Xiao Dec 2019

Modeling Of Capability Relations Oriented To The Evolution Of Operational System-Of-Systems, Xia Lu, Mingzhi Zhang, Jingyu Yang, Changliang Xiao

Journal of System Simulation

Abstract: Based on the analysis of the capability of the operational system-of-systems (OSoS) and its relationship, the capability relationship description function is constructed, and the spreading effect and emerging effect are explained. The super-network theory is used to establish the ‘entity-capability’ network model and its characteristic parameters. For measuring the emerging effect of the capability of OSoS, the capability contribution domain model and the capability emergence domain model are constructed. Taking the air defense system-of-systems evolution analysis as an example, the capability relationship model of OSoS is verified to provide a qualitative and quantitative method for constructing the evolution set …

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Resilience Analysis And Evaluation Of Combat System Of Systems Architecture Based On Dynamic Super Network, Rong Ming, Xiaofeng Hu, Jingyu Yang Dec 2019

Resilience Analysis And Evaluation Of Combat System Of Systems Architecture Based On Dynamic Super Network, Rong Ming, Xiaofeng Hu, Jingyu Yang

Journal of System Simulation

Abstract: The resilience of combat architecture is a kind of adaptability and recovery ability presented by the architecture when the combat system of systems (CSoS) faces destruction, attack and failure. It has become an important index to measure the capability of CSoS. The dynamic super network model is established by mapping the experimental data of CSoS resilience simulation. The resilience index of CSoS architecture is proposed and the resilience measure CSoSIR algorithm is designed. Based on the resilience analysis framework of competitive game, the CSoS architecture resilience is analyzed and evaluated.

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Concurrent Conflict Control Method Of "Multi-Rights+Operation Queues" Based On Cpn Tools, Zhili Zhang, Yunrong Zhang, Shixin Ma Dec 2019

Concurrent Conflict Control Method Of "Multi-Rights+Operation Queues" Based On Cpn Tools, Zhili Zhang, Yunrong Zhang, Shixin Ma

Journal of System Simulation

Abstract: There are problems with concurrent control methods such as operation rights + timestamp, for example, the role of each maintenance worker cannot be played. The concurrent control method of multiple rights and operation queues can solve this problem. The working principles of the important function modules of this method are discussed, and the operation method of the process flow chart and colored Petri net is given. The data are simulated by the CPN Tools for the entire process. Simulation results show that this method can ensure the operation fairness of the low maintenance personnel, and make every maintenance staff …

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Treadmill Speed Coordination Control For Lower Limb Rehabilitation Training Robot, Li Feng, Zhizheng Wu, Hou Wei, Xiaofei Qin Dec 2019

Treadmill Speed Coordination Control For Lower Limb Rehabilitation Training Robot, Li Feng, Zhizheng Wu, Hou Wei, Xiaofei Qin

Journal of System Simulation

Abstract: In the course of active exercise training for patients with lower limb rehabilitation robots, a treadmill speed coordinated control method based on acceleration suppression is proposed to prevent secondary damage to patients caused by muscle spasms. The mathematical model of treadmill is established by means of system identification. Based on the H2 optimal design method and the continuous time system switching theory, the treadmill speed PI controller with acceleration suppression is designed. The simulation results show that the controller can not only reduce the acceleration of the treadmill, but also keep the speed of the treadmill …

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Research On Real-Time Simulation Platform Architecture Based On Multi-Core Scheduling, Jiahui Tong, Liu Jin, Jinyuan Zhang, Yongxiang Zhang Dec 2019

Research On Real-Time Simulation Platform Architecture Based On Multi-Core Scheduling, Jiahui Tong, Liu Jin, Jinyuan Zhang, Yongxiang Zhang

Journal of System Simulation

Abstract: With the development of weapon equipment and support training system, new requirements are added to architecture of simulation platform. Considering the overall architecture, hardware architecture and software system, combining the requirement of experiment and training, a real-time simulation platform architecture with network and distributed system characteristics is proposed. The platform provides embedded computing nodes. The computing nodes and network are strong real-time.

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Wood Surface Defect Detection Based On Adaboost And Cnn, Hongjun Wang, Zouzou Li, Xiangjun Zou Dec 2019

Wood Surface Defect Detection Based On Adaboost And Cnn, Hongjun Wang, Zouzou Li, Xiangjun Zou

Journal of System Simulation

Abstract: In order to obtain the location information and category information of wood surface defects in the early stage of intelligent wood cutting, a combined algorithm for fast identification and location of wood surface defects is proposed based on digital image processing technology for fast recognition and location of wood surface defects. The Adaboost cascade classifier algorithm is used to extract the candidate frames of the wood surface defect region in the image in order to solve the problem that the traditional segmentation method is not effective for multi objects processing. A CNN model with self-learning ability is used to …

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Control Method Of Unified Svpwm For Three-Phase Four-Switch Fault-Tolerant Apf Based On Inductor Current, Jianfeng Yang, Jiang Hui, Tianqi Zhou Dec 2019

Control Method Of Unified Svpwm For Three-Phase Four-Switch Fault-Tolerant Apf Based On Inductor Current, Jianfeng Yang, Jiang Hui, Tianqi Zhou

Journal of System Simulation

Abstract: The algorithm of conventional space vector PWM for three-phase four-switch fault-tolerant APF chooses different coordinate transformation control algorithm based on the fault location selection of phase A, phase B, phase C. The calculation process involves a lot of coordinate operation, and, is not conducive to the fault switching. A unified SVPWM for three-phase four-switch Fault-tolerant active power filter based on inductor current is presented. The traditional SVPWM control needs complex coordinate transformations. The simplified algorithm takes the inductor current change as the control target, doesnot complicated coordinate transformation calculation, and the form of the calculation is unified, which is …

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A Just-In-Time Learning Soft Sensing Modeling Method Based On Bayesian Gaussian Mixture Model, Qi Cheng, Weili Xiong Dec 2019

A Just-In-Time Learning Soft Sensing Modeling Method Based On Bayesian Gaussian Mixture Model, Qi Cheng, Weili Xiong

Journal of System Simulation

Abstract: For some time-varying industrial processes with non-Gaussian properties, the model established by the general soft-sensing method is difficult to meet the accuracy requirement. To solve the above problems effectively, a JITL soft sensor modeling method (BGMM) is proposed based on Bayesian Gaussian Mixture Model. For the given training sample set, the number of components of the Gaussian mixture model is optimized by Bayesian Information Criterion (BIC); For new test samples, Gaussian Process Regression (GPR) model is established by using the BGMM similarity criterion for the training samples to find out the most similar set;The model is used to predict …

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Multi-Agent Simulation Model Of Urban Safety Livability Change, Lihu Pan, Xiaowen Li, Shipeng Qin, Yingjun Zhang, Huimin Yan Dec 2019

Multi-Agent Simulation Model Of Urban Safety Livability Change, Lihu Pan, Xiaowen Li, Shipeng Qin, Yingjun Zhang, Huimin Yan

Journal of System Simulation

Abstract: Urban livability is an important factor for the decision of modern urban construction. Based on the multi-agent modeling theory, a model for the change of urban livability is proposed, so as to analyze the present situation and changing trend of urban livability in complex urban system. Taking safety as an example, five environmental indicators of public security, fire protection, traffic, emergency response and residence are given. The interactive dynamic feedback mechanism between residents' decision-making behavior and urban safety livability under the influence of the five indicators and policies is provided, and the residents' decision-making simulation of urban safety livability …

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Personalized Music Recommendation Algorithm Tfpmf, Xining Ye, Wang Meng Dec 2019

Personalized Music Recommendation Algorithm Tfpmf, Xining Ye, Wang Meng

Journal of System Simulation

Abstract: In recent years, the personalized context-aware recommendation is the rub and hotness in the research of recommendation system, and the data sparseness is the main problem faced by the current recommendation systems. In the setting of music recommendation, the representing method of varieties of situational information is improved. A model of TFPMF is proposed, which combines the model of RR-PMF with the tensor decomposition. TFPMF is optimized by alternative least squares (ALS). By the simulation experiments in the last.fm dataset, we got the TOP-N recommended list through the simulation program. The simulation results show that the proposed algorithm has …

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Analyzing The Pedestrian Evacuation Efficiency In Architecture Based On Different Facilities Layout, Zhihong Li, Yanjie Wen, Wangtu Xu, Qi Yue Dec 2019

Analyzing The Pedestrian Evacuation Efficiency In Architecture Based On Different Facilities Layout, Zhihong Li, Yanjie Wen, Wangtu Xu, Qi Yue

Journal of System Simulation

Abstract: Pedestrians escaping from the architecture are restricted by limited time and space. There are so many different exits, channels and bottleneck. Three kinds of facilities layout were designed to be initial schemes. The shortest escaping time was estimated by the different bottlenecks. Then, a safety escaping model based on the facilities layout and dynamic information was proposed, and the escaping time, area density and evacuation efficiency were analyzed by the simulation. The research indicates that by calculating and simulating the model can estimate the evacuation time for different schemes, and the result can provide some advices for facilities layout.

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Teaching And Training Platform For Virtual Equipment Of Replenishment Based On Web3d, Li Nan, Shiyun Zhang Dec 2019

Teaching And Training Platform For Virtual Equipment Of Replenishment Based On Web3d, Li Nan, Shiyun Zhang

Journal of System Simulation

Abstract: In view of the problem that military simulation training system can't maximize to the advantages of virtual reality simulation technology because of the limitations of regional, space and training ability, this paper developed a virtual equipment training and teaching platform. It made a large-scale compression for 3D models and map data. Meanwhile it made streaming and multithreading download of compressed data through the HTTP protocol. It dealt with the high concurrent access on network by using the balanced load. So that it has broken the limitations of regions space and training ability of the previous military simulation training system, …

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Virtual Scene Roaming Method Supporting Multi-Layer Path Planning, Shi Min, Yukun Wei, Xiangchen Jin, Suqin Wang, Tianlu Mao Dec 2019

Virtual Scene Roaming Method Supporting Multi-Layer Path Planning, Shi Min, Yukun Wei, Xiangchen Jin, Suqin Wang, Tianlu Mao

Journal of System Simulation

Abstract: Taking the automatic role pathfinding in three-dimensional virtual scene as the research background, the author proposes a method of multi-layer pathfinding based on A-star algorithm, and uses advanced heuristic functions to evaluate the cost values of various expansion nodes to confirm the optimal solution to the problems. By introducing collision detection mechanism, the navigation path generated by the improved A* algorithm is modified to avoid collision; and by interpolating the fixed path, the smooth navigation path is constructed using Bézier Curve. The experimental results show that the path finding results can well adapt to the multi-layer case when the …

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Characteristic Index Digging Of Combat Sos Capability Based On Machine Learning, Yongli Yang, Xiaofeng Hu, Rong Ming, Xiaojing Yin, Wenxiang Wang Dec 2019

Characteristic Index Digging Of Combat Sos Capability Based On Machine Learning, Yongli Yang, Xiaofeng Hu, Rong Ming, Xiaojing Yin, Wenxiang Wang

Journal of System Simulation

Abstract: Aiming at the two difficulties in characteristic index digging of combat system of systems (CSoS), namely operation data generation and digging method selection, this paper proposes a new digging method, that is, using the simulation testbed to generate operation data, then adopting the machine learning to dig characteristic index. Two methods of characteristic index digging based on machine learning are researched: (1) the method based on network convergence, divides the communities for fundamental indexes based on their relationship, and obtains the characteristic indexes by principal component analysis (PCA); this method is applied to dig the characteristic indexes of …

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Data Model Of Battlefield Geographic Environment Simulation Object Based On Cognition, Zhu Jie, You Xiong, Xia Qing Dec 2019

Data Model Of Battlefield Geographic Environment Simulation Object Based On Cognition, Zhu Jie, You Xiong, Xia Qing

Journal of System Simulation

Abstract: Aiming at the urgent demands on present battlefield environment cognition active service, its requirements are hard to be satisfied by the traditional battlefield environment data model, thus a kind of battlefield environment simulation data model needs to be constructed. The characteristics of task-orientated battlefield geographic space cognition progress are analyzed, and the cognitive process concept model is constructed. The characteristics of battlefield environment object recognition structure are analyzed; the hierarchical structure division is implemented on battlefield geographic environment simulation object with object-orientated method; and object data models are described uniformly with SEDRIS. Based on cognitive-driven mechanism of workflow, the …

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Jammer Placement Algorithm Based On Particle Swarm Optimization, Fang Fang, Chunming Ye, Haibo Liu Dec 2019

Jammer Placement Algorithm Based On Particle Swarm Optimization, Fang Fang, Chunming Ye, Haibo Liu

Journal of System Simulation

Abstract: A novel jammer placement algorithm based on particle swarm optimization is proposed to solve the problems of nodes’ mobility and restrictions on placement areas in ad-hoc network. There are three steps in this algorithm: network simulation, jamming simulation, and optimization. The algorithm simulates the network communication process and movement of nodes with discrete simulation method. Simple particle swarm optimization is applied to compute the exact coordinates of jammers. Experiment results show that this algorithm is good at jamming network nodes moving in different ways. The algorithm has stable performance with varying conditions such as different placement areas, jamming …

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Low-Cost Hardware-In-The-Loop Flight Simulation System, Chuanyan Tian, Junzhao Hu, Jikui Liu, Qianlong Yang Dec 2019

Low-Cost Hardware-In-The-Loop Flight Simulation System, Chuanyan Tian, Junzhao Hu, Jikui Liu, Qianlong Yang

Journal of System Simulation

Abstract: Hardware-in-the-loop simulation is an effective way and experimental method to evaluate and verify the performance of the aircraft system. To satisfy the requirements of real-time, scalability, high reliability simulation of a certain aircraft control system, a new design of low-cost hardware-in-the-loop real-time scene simulation system consisted of IPC, DSP, three-axis turntable, steering engine and visual simulation computer was put forward. Real-time simulation system software composed by flight control simulation module, aircraft movement simulation module and scene simulation module was implemented, and it resolved the difficulties in real-time, data synchronization, multiple node communication of simulation system. Comparison with …

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Design And Implementation Of Parallel Central Securities Trading Simulation System, Guangbin Xu Dec 2019

Design And Implementation Of Parallel Central Securities Trading Simulation System, Guangbin Xu

Journal of System Simulation

Abstract: Chinese securities market has become a worldly very important finance pricing center. As the core facilities of the markets, the central securities trading systems of stock exchanges have been upgraded continually. Both Shanghai and Shenzhen Stock Exchanges currently adopt the third-generation central securities trading systems to support respective business requirements, which are both based on the advanced parallel processing paradigm. To support various securities trading simulation experiments of the Chinese markets, referring to NGTS, the central trading system currently-used by Shanghai Stock Exchange, a PC-based simulation system is designed and implemented, which can support full market data distribution and …

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Fire Emergency Evacuation Simulation Of Vertical Ship Lift, Jianping Wang, Meiru Wang, Chen Shu, Chengyou Liu, Li Zhi Dec 2019

Fire Emergency Evacuation Simulation Of Vertical Ship Lift, Jianping Wang, Meiru Wang, Chen Shu, Chengyou Liu, Li Zhi

Journal of System Simulation

Abstract: In order to analyze the fire evacuation efficiency of vertical ship lift, the influence of population characteristics on evacuation is analyzed quantitatively from three aspects, such as age structure, population density and flow velocity. According to the emergency evacuation path of vertical ship lift, the three-stage evacuation time is divided into three parts. In order to obtain fire evacuation time, the model of vertical ship lift with the passenger ship is established and parameters of evacuation time are set up by using the simulation technology. The actual case of the Three Gorges ship lift shows:1) the evacuation …

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Review Of Evaluation Methods Of Contribution Rate To System Of Systems, Xiaojing Yin, Xiaofeng Hu, Rong Ming, Haiyang Liu, Yongli Yang Dec 2019

Review Of Evaluation Methods Of Contribution Rate To System Of Systems, Xiaojing Yin, Xiaofeng Hu, Rong Ming, Haiyang Liu, Yongli Yang

Journal of System Simulation

Abstract: The warfare is the encounter of system of systems (SoS). The evaluation on the contribution rate to SoS is of great importance to the development of operational SoS as a measure of the evaluating units’ contribution to SoS. In this paper the basic concept and classification of the contribution rate to operational SoS are elaborated; its connotation and nature are analyzed; and the current research status and the technical difficulties in this research field are summarized. The development trend is predicted, which provides a useful reference for relative research.

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Reaction Force Of Ship Bearing Including Multi Factors, Shengdong Zhang, Xiuying Yang Dec 2019

Reaction Force Of Ship Bearing Including Multi Factors, Shengdong Zhang, Xiuying Yang

Journal of System Simulation

Abstract: Since the variety and complexity of the stern bearing's operational environment and working conditions, the stern bearing load has uncertainty characters. The mathematical model of uncertainty reaction force of bearing is established including multiple random factors by using the stochastic theory; the uncertainty calculation method is formulated; and the calculation example is put forward to verify the validity of the theoretical model. The influence law among multi factors such as hull deformation, propeller hydrodynamic vertical force and bearing wear is revealed for the uncertainty reaction force of ship stern bearing by taking a large container ship as example. …

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Evaluation Of Stealth Aircraft Approaching Support Jamming Performancefrom Detection Probability, Bao Lei, Chunyang Wang, Huiyong Zeng, Bai Juan Dec 2019

Evaluation Of Stealth Aircraft Approaching Support Jamming Performancefrom Detection Probability, Bao Lei, Chunyang Wang, Huiyong Zeng, Bai Juan

Journal of System Simulation

Abstract: Aiming at the problem of how to construct an effective model to evaluate the reasonableness of detection performance when a radar detects a third-generation aircraft covered by an approaching support jamming performance of stealth aircraft, a stealth aircraft jamming model based on diving to the near support track is proposed. After calculating the aircraft attitude angle, the time-varying dynamic RCS series are extracted. Using Swerling IV distribution, the characteristics of radar instantaneous detection probability time-varying in penetration jamming between normal flight and stealth aircraft are studied and compared. Simulation results show that the radar detection probability can be reduced …

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Some Problems And Countermeasures In Simulation Credibility Evaluation, Jiao Peng, Zhang Qi, Xiangyu Wei, Yabing Zha Dec 2019

Some Problems And Countermeasures In Simulation Credibility Evaluation, Jiao Peng, Zhang Qi, Xiangyu Wei, Yabing Zha

Journal of System Simulation

Abstract: With the increasing application of simulation technology in various fields, users have put forward higher requirements for the credibility of the simulation system. This paper focuses on some key issues of the credibility evaluation of the simulation system, such as the unclear expected application, the incomplete evaluation, the unclear evaluation criteria, and the open loop of evaluation conclusions. From the perspectives of comprehensive implementation of credibility assessment, strengthening the design of acceptability standards, and focusing on the evaluation of closed-loop implementation, how to solve the real problem has been studied and discussed. The research results of this paper …

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Osgearth Stereoscopic Vision Generation Method For Hmd-Based Virtual Reality, Liheng Tan, Ma Qiang, Bingchuan Jiang, Li Feng Dec 2019

Osgearth Stereoscopic Vision Generation Method For Hmd-Based Virtual Reality, Liheng Tan, Ma Qiang, Bingchuan Jiang, Li Feng

Journal of System Simulation

Abstract: The technology of immersive virtual reality based on helmet mounted display (HMD) has become a focus of study, however, its visual content is mainly produced through commercial game engines. OsgEarth is an open-source, state-of-the-art and widely used digital earth simulation system. Based on this, we studies the stereoscopic vision generation method for global virtual terrain environment, mainly focusing on: stereoscopic vision theory; construction of global high-precision virtual geographical environment; calculation of binocular view frustrum; system integration. The proposed method is verified under the hardware conditions of PC and HTC VIVE, which can generate stereo images of the global virtual …

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Simulation Platform For Invulnerability Of Industrial Wireless Sensor Networks, Xiuwen Fu, Yongsheng Yang Dec 2019

Simulation Platform For Invulnerability Of Industrial Wireless Sensor Networks, Xiuwen Fu, Yongsheng Yang

Journal of System Simulation

Abstract: Existing simulation platforms for industrial wireless sensor networks (IWSNs) mainly focus on the general scenario and fail to take into consideration the impacts of interference brought by external environments and emergencies on network performance, thus failing to evaluate the network invulnerability. For given the environment-impacted and event-driven features of IWSNs, the connections between network invulnerability and deployment environment are built. On this basis, a simulation platform for invulnerability of IWSNs is proposed by introducing deployment environment component and event creator. Experiments show that the platform is capable of evaluating the invulnerability of IWSNs.

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Design And Implementation Of Interactive Ar System For Campus Roaming, Shengwei Qin, Li Zhong, Jinfeng Li, Zihao Chen, Jingqian Ding, Wanshun Liu Dec 2019

Design And Implementation Of Interactive Ar System For Campus Roaming, Shengwei Qin, Li Zhong, Jinfeng Li, Zihao Chen, Jingqian Ding, Wanshun Liu

Journal of System Simulation

Abstract: There are many kinds of navigation applications in universities recently. These applications have obvious shortcomings, which only indicate the outdoor locations without detail information; even some places cannot be found in the map; and it takes a lot of time to design a system. Meanwhile the system cannot achieve real-time interaction effect in virtual ramble. An interactive campus roaming augmented reality (AR) system is designed combining with GPS module for locating outside the campus and utilizing deep learning technology to achieve locating the inside buildings of campus. Simultaneously AR technology will improve interactivity of the system. The experiment …

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