Open Access. Powered by Scholars. Published by Universities.®
Operations Research, Systems Engineering and Industrial Engineering Commons™
Open Access. Powered by Scholars. Published by Universities.®
- Discipline
-
- Physical Sciences and Mathematics (1546)
- Computer Sciences (1523)
- Computer Engineering (1511)
- Artificial Intelligence and Robotics (1500)
- Numerical Analysis and Scientific Computing (1495)
-
- Systems Science (1490)
- Industrial Engineering (164)
- Operational Research (106)
- Industrial Technology (78)
- Systems Engineering (63)
- Electrical and Computer Engineering (62)
- Business (52)
- Social and Behavioral Sciences (48)
- Chemical Engineering (43)
- Controls and Control Theory (43)
- Mechanical Engineering (43)
- Process Control and Systems (42)
- Complex Fluids (41)
- Other Operations Research, Systems Engineering and Industrial Engineering (29)
- Manufacturing (25)
- Ergonomics (21)
- Medicine and Health Sciences (20)
- Public Affairs, Public Policy and Public Administration (18)
- Technology and Innovation (17)
- Civil and Environmental Engineering (15)
- Business Administration, Management, and Operations (14)
- Digital Communications and Networking (13)
- Statistics and Probability (11)
- Institution
-
- China Simulation Federation (1490)
- Chulalongkorn University (53)
- Air Force Institute of Technology (49)
- Tashkent State Technical University (42)
- Missouri University of Science and Technology (35)
-
- Old Dominion University (29)
- University of Arkansas, Fayetteville (23)
- West Virginia University (18)
- Singapore Management University (17)
- University of Central Florida (14)
- University of Texas Rio Grande Valley (13)
- University of Malaya (12)
- University of Texas at Arlington (11)
- California Polytechnic State University, San Luis Obispo (10)
- California State University, San Bernardino (8)
- University of Louisville (8)
- University of South Florida (7)
- Embry-Riddle Aeronautical University (6)
- Louisiana State University (5)
- Purdue University (5)
- Institut de Recherche Robert-Sauvé en santé et en sécurité du travail (4)
- University of Texas at El Paso (4)
- Wright State University (4)
- Florida Institute of Technology (3)
- George Fox University (3)
- Kennesaw State University (3)
- Portland State University (3)
- Rochester Institute of Technology (3)
- San Jose State University (3)
- The University of Akron (3)
- Keyword
-
- Simulation (80)
- Optimization (23)
- Numerical simulation (20)
- Particle swarm optimization (20)
- Virtual reality (20)
-
- Genetic algorithm (19)
- Modeling (19)
- Modeling and simulation (14)
- Multi-objective optimization (13)
- Fault diagnosis (12)
- Machine learning (12)
- System simulation (12)
- Simulation model (11)
- Visualization (11)
- Complex network (10)
- Deep learning (10)
- Robustness (10)
- Virtual simulation (10)
- Dynamic simulation (9)
- Mathematical model (9)
- Ontology (9)
- Parameter identification (9)
- Reliability (9)
- Scheduling (9)
- Machine Learning (8)
- Neural network (8)
- PSO (8)
- Sparse representation (8)
- Support vector machine (8)
- UAV (8)
- Publication
-
- Journal of System Simulation (1490)
- Chulalongkorn University Theses and Dissertations (Chula ETD) (53)
- Chemical Technology, Control and Management (42)
- Theses and Dissertations (39)
- Engineering Management and Systems Engineering Faculty Research & Creative Works (20)
-
- Faculty Publications (19)
- Graduate Theses, Dissertations, and Problem Reports (ETD) (17)
- Research Collection School Of Computing and Information Systems (16)
- Electronic Theses and Dissertations, 2020-2023 (14)
- Engineering Management & Systems Engineering Faculty Publications (13)
- Manufacturing & Industrial Engineering Faculty Publications (13)
- Student Works (2020-2029) (12)
- Doctoral Dissertations (11)
- Electronic Theses and Dissertations (9)
- Engineering Management & Systems Engineering Theses & Dissertations (9)
- Industrial Engineering Undergraduate Honors Theses (9)
- Graduate Theses and Dissertations (8)
- Industrial, Manufacturing, and Systems Engineering Dissertations - Archive (8)
- Journal of International Technology and Information Management (8)
- USF Tampa Graduate Theses and Dissertations (7)
- Operations Management Presentations (6)
- Dissertations (4)
- Industrial Technology and Packaging (4)
- LSU Master's Theses (4)
- Master's Theses (4)
- Open Access Theses & Dissertations (4)
- Rapports de recherche scientifique (4)
- Browse all Theses and Dissertations (3)
- Faculty Publications - Biomedical, Mechanical, and Civil Engineering (3)
- Industrial and Manufacturing Engineering (3)
- Publication Type
- File Type
Articles 691 - 720 of 1941
Full-Text Articles in Operations Research, Systems Engineering and Industrial Engineering
Research On Network Emulation Method Based On Shared Library Integration, Mingqing Zhang, Leigang Sun, Hongshan Kong, Xianqing Qi
Research On Network Emulation Method Based On Shared Library Integration, Mingqing Zhang, Leigang Sun, Hongshan Kong, Xianqing Qi
Journal of System Simulation
Abstract: For the high-risk, high-cost to test equipments in real network and the poor accuracy of software simulation, network emulation method was introduced; the integration between real application and simulation system is the key technology. According to the mapping principle between real device and virtual network, a network emulation model framework was proposed; the OMNeT++ simulator on the source code lever was designed; the network emulation method based on shared library integration was proposed; the problems of thread error, time distortion and symbolic space in the process of integration were discussed, and corresponding solutions were given; the correctness …
3-Dimensional Kinematics Simulation Of Gear Hobbing, Rongchuang Zhang, Wang Jun, Wang Bo, Wanshan Wang
3-Dimensional Kinematics Simulation Of Gear Hobbing, Rongchuang Zhang, Wang Jun, Wang Bo, Wanshan Wang
Journal of System Simulation
Abstract: To save inevitable modeling insufficiencies owing to the simplified modeling strategie, 3-dimensional kinematics simulation of gear hobbing based on solid modeling was developed. On the basis of the kinematic relationship and positional relationships between the hob cutter and work piece, the vector model of the gear hobbing motion based time-driven was put forward. Based on UG Secondary Development, geometrical model of hob tooth rake face and curvilinear model of hob tooth path were developed, and the swept geometric entity of the hob tooth was developed through the use of the combination of these two models. The intersection of …
Probability Hypothesis Density Filter Based On Adaptive Target Birth Intensity, Jingjing Wu, Lihua You, Wang Yao, Shujuan Song
Probability Hypothesis Density Filter Based On Adaptive Target Birth Intensity, Jingjing Wu, Lihua You, Wang Yao, Shujuan Song
Journal of System Simulation
Abstract: For probability hypothesis density (PHD) filter, that was not able to track birth targets of unknown position, PHD filter with adaptive target birth intensity was proposed. The track initiation algorithm was employed to detect positions of promising birth targets which were used to form the intensity function of birth targets, and an online estimation algorithm of spontaneous birth intensity was proposed. Adaptive target birth intensity was combined with the recursion of the PHD filter, and a solution to the PHD filter based on adaptive target birth intensity for linear Gaussian target dynamics was proposed. Simulation results demonstrate that …
Adjacent Bit Xor Operation Based Test Data Compression Method, Yifei Cheng, Wenfa Zhan
Adjacent Bit Xor Operation Based Test Data Compression Method, Yifei Cheng, Wenfa Zhan
Journal of System Simulation
Abstract: Data compression is a very effective method to reduce the test cost. An adjacent bit XOR operation based test data compression method was proposed based on bitwise XOR operation between itself and its previous bit, which turned continuous series, such as a series of all 0s and all 1s into series of all 0s, and reversal series, such as a series of 01 and 10 into series of all 1s by bitwise XOR operation between adjacent bits. On one hand, the two kinds of series, continuous series and reversal series, were both taken into account, which decreased the number …
Gm(2,1) Model And Identification Algorithm Based Wind Power Generation Short-Term Prediction, Ziyun Wang, Zhicheng Ji
Gm(2,1) Model And Identification Algorithm Based Wind Power Generation Short-Term Prediction, Ziyun Wang, Zhicheng Ji
Journal of System Simulation
Abstract: A method based on the gray theory and identification model was proposed to predict the short-term wind power generation. GM(2,1) model was applied for establishing a wind speed prediction model with an iterative step. After the wind speed prediction procedure, a finite impulse response moving average nonlinear Hammerstein model was used in the modeling between wind speed and wind power generation. By adopting the stochastic gradient searching theory, a wind power generation forecasting algorithm was proposed. The proposed simulation shows that the presented method can forecast the real time power generation of wind turbine and raise the accuracy of …
Policies Conflict Detection Algorithm Coordinated Defense-Oriented Of Firewall And Ids/Ips, Qiu Song, Jiao Jian, Dongyang Zhang
Policies Conflict Detection Algorithm Coordinated Defense-Oriented Of Firewall And Ids/Ips, Qiu Song, Jiao Jian, Dongyang Zhang
Journal of System Simulation
Abstract: Coping with the distributed and complex threaten of networking attack, the requirement of coordinated defense of Firewall and IDS/IPS are becoming more and more urgent. As the existence of uncertainty of the judgment of Intrusion performed by IDS/IPS, Firewall and IDS/IPS often perform contradict action, that the same package matched the both rules of Firewall and IDS/IPS, and conflict arose, which would lead to illegal access control or deny of legal access control. The policies conflict detection algorithm of coordinated defense of Firewall and IDS/IPS were researched. The semantic models of firewall policy and IDS/IPS policy were proposed, the …
High Accuracy And Stable Transient Process Design Of Orbit Control For Space Rendezvous And Docking, Kaikai Li, Weiwei Shang
High Accuracy And Stable Transient Process Design Of Orbit Control For Space Rendezvous And Docking, Kaikai Li, Weiwei Shang
Journal of System Simulation
Abstract: In the docking phase of orbit control task of space rendezvous and docking, smooth without overshoot, good robustness and fuel-saving control are required. To this end, a transient process for orbit control was proposed, and new controllers were designed on the basis of the transient process for the space rendezvous and docking. The ultimate goal was refined to the gradual arrival goal to build the transient process between the initial coordinate and the target coordinate of the system. The output of the transient process was designed as a smooth S-type curve. Three different orbit controllers of space rendezvous and …
Study Of Setting Up Simulation Platform Of Self-Adaptive Flight Control System With Self-Repair Function, Long Hao, Shujie Song
Study Of Setting Up Simulation Platform Of Self-Adaptive Flight Control System With Self-Repair Function, Long Hao, Shujie Song
Journal of System Simulation
Abstract: The frame and characteristic of self-adaptive flight control system with self-repair function for aircraft with thrust vector were studied. RHO optimal algorithm was used to realize online controller design. MSLS algorithm was used to realize online flight identify parameters. Global parity space method, sensor data fusion and probability theory were used to realize FDI algorithm. The simulation platform used to simulate self-repair function with aircraft control surface failure was developed using OOP language VC++6.0 and three-dimensional graphics language OpenGL. Simulations show that the control surface and flight aerodynamic parameter change with flying states in the flight movement …
Uav Takeoff Decision Based On Neural Network Model Of Takeoff Capability, Yongtao Peng, Yueping Wang, Xiaoting Wang
Uav Takeoff Decision Based On Neural Network Model Of Takeoff Capability, Yongtao Peng, Yueping Wang, Xiaoting Wang
Journal of System Simulation
Abstract: To enhance the safety in case of engine flameout failure, a new type of UAV takeoff decision based on neural network capacity model was proposed. Two capacity parameters of takeoff safety in case of engine flameout failure were defined, one is the maximum velocity for a safe takeoff and the other is the minimum velocity for a safe shut down. A calculation method based on iterative simulations for those parameters under multiple flight conditions was introduced. Double layer neural networks were used to model the relationship between flight conditions and the capacity parameters, to realize the compressive storage and …
Wood Structure Nondestructive Detection Based On Wavelet Analysis Ant-Colony Bp Network, Guoxiong Zhou, Xianyan Zhou, Jiejun Wang, Te Huang
Wood Structure Nondestructive Detection Based On Wavelet Analysis Ant-Colony Bp Network, Guoxiong Zhou, Xianyan Zhou, Jiejun Wang, Te Huang
Journal of System Simulation
Abstract: In view of the wood component glue line defect, a method of wood structure nondestructive detection was proposed based on ant colony BP neural network. The wood specimens was tested to obtain the test signal by ultrasonic testing instrument, in order to eliminate the testing effect of the tester gain control and defect size, angle variation on the test defect echo amplitude, the defect signal amplitude was needed to normalization. The wood component decomposition of ultrasonic signals was de-composite to different frequency channels by the domain band-pass characteristics of the wavelet frequency. By extract characteristic of the original signal …
Modeling And Simulation Of Rectifying Circuit For Simultaneous Wireless Information And Power Transfer, Zuxiang Zheng, Lenan Wu
Modeling And Simulation Of Rectifying Circuit For Simultaneous Wireless Information And Power Transfer, Zuxiang Zheng, Lenan Wu
Journal of System Simulation
Abstract: Simultaneous wireless information and power transfer (SWIPT) is intended to transmit information and energy simultaneously over the wireless channels. As a major component of SWIPT, a rectifying circuit is an essential influencing factor for power conversion efficiency of SWIPT. Closed-form equations of power conversion efficiency and input power of rectifying circuit were derived to predict the performance. This simplified model is useful for circuit design and optimization. The result of theoretical analysis and ADS simulation shows that Ultra Narrow Band (UNB) signal has a sine-like performance in wireless power transfer. Using UNB signal as a novel modulation scheme, and …
Research On Simulation Method Of Unconformity Surface In Rock Mass Based On Pfc3d, Teijun Cui, Yundong Ma, Laigui Wang
Research On Simulation Method Of Unconformity Surface In Rock Mass Based On Pfc3d, Teijun Cui, Yundong Ma, Laigui Wang
Journal of System Simulation
Abstract: In order to accurately simulate the rock mass, considering the effects of the unconformity to simulation, the method was purposed to simulate the different contact situation using PFC3D based on the Particle flow theory, include: integration, parallel unconformity, angular unconformity. Simulation step include: define the rock coordinate system; determine the key points of contact trend; use MATLAB to fit the trend curve and get the parameters; use PFM to construct the model; shaping contact surface using FISH according the parameters. The structured model satisfies the above requirements, which proved the model is close to the actual rock mass mechanics …
Transient Analysis Of Metro Vehicle Auxiliary Inverter During Pantograph And Catenary Off-Line, Xiaobo Li, Wu Hao, Jiechen Xu
Transient Analysis Of Metro Vehicle Auxiliary Inverter During Pantograph And Catenary Off-Line, Xiaobo Li, Wu Hao, Jiechen Xu
Journal of System Simulation
Abstract: Pantograph and catenary off-line brings great harm to the safe and reliable operation of subway vehicles. The equivalent process during off-line and the off-line equivalent circuit of subway vehicles was proposed. Taking a metro vehicles powered auxiliary inverter system as an example, the off-line transient analysis was carried out, and a simulation test was conducted. As shown in the results, the useful signal during off-line greatly reduced in vehicle system and the harmonics of Insulated Gate Bipolar Transistor (IGBT) voltage was greatly increased. The questions about heat-resistant and insulation arose, which caused the inverter module to damage and greatly …
Modeling Method Of Airborne Display And Control System Based On Meta-Model Features, Zhile Wang, Jungan Wei, Yu Hui
Modeling Method Of Airborne Display And Control System Based On Meta-Model Features, Zhile Wang, Jungan Wei, Yu Hui
Journal of System Simulation
Abstract: Analysed of the current integrated avionics display and control system simulation problems, discussed the system’s function, composition and the simulation design method detailedly. Proposed a reconfigurable modeling method of meta-model features according to the requirements of the simulator develop. Make full used of the feature extraction method meta-model theory, the various elements that make up the system and their relationship was classified and feature abstract and description reasonably, built the meta-model of display and control system. Created the display and control system’s graphic elements, characters and Human-computer interactive interface by GL Studio. Using object-oriented techniques to make reusable class …
Identification And Visual Analysis Of Structure Characteristics Of Severe Storm, Jiayi Xu, Xuanxuan Huang
Identification And Visual Analysis Of Structure Characteristics Of Severe Storm, Jiayi Xu, Xuanxuan Huang
Journal of System Simulation
Abstract: A technique of adaptively extracting the feature regions from radar storm data was proposed based on the meteorological radar theory and historical statistics. A logical analysis strategy was proposed to identify convective cores, searched full convective regions to extract isolated storm cells. The changing of reflectivity data and corresponding gradient were analyzed to classify four typical structures. In order to accurately show the extracted spatial structures of storm cell, a parallel rendering framework was constructed by improving the ray-casting algorithm. Experiment results show that the proposed technique can quickly and accurately identify and visualize the spatial structure of sever …
Improved Support Vector Pre-Extracting Algorithm In Speech Recognition Application, Hao Rui, Yanbo Niu, Xiu Lei
Improved Support Vector Pre-Extracting Algorithm In Speech Recognition Application, Hao Rui, Yanbo Niu, Xiu Lei
Journal of System Simulation
Abstract: Support vector machine (SVM) training is difficult for large-scale data set of speech recognition. A new SVM pre-extracting algorithm was proposed. On the one hand, kernel Fuzzy C-Means clustering was separately performed on each class of original data set. All the cluster centers were as a representative set of each class. On the other hand, according to the geometric distribution of support vectors and combined with the classification strategy of one-versus-one for SVM multi-class classification algorithm, boundary samples were extracted as support vectors for SVM to training and prediction. The algorithm was applied to embedded speech recognition system. Experiments …
Trusted Scheme For Defending On-Off Attack Based On Beta Distribution, Weidong Fang, Zhidong Shi, Lianhai Shan, Fengrong Li, Xiuzhi Wang
Trusted Scheme For Defending On-Off Attack Based On Beta Distribution, Weidong Fang, Zhidong Shi, Lianhai Shan, Fengrong Li, Xiuzhi Wang
Journal of System Simulation
Abstract: Using encryption and authentication mechanisms can only prevent external attacks, but these mechanisms for internal attacks are invalid in Wireless Sensor Networks (WSNs). On-off attack also belongs to internal attacks, which has more concealment and aggressive, due to its reputation value dynamic changing. By using difference value and trend analysis based on BETA distribution, an effective trust mechanism was proposed to defend On-off attack. Simulation shows that this scheme can defend On-off attack, and be easy to implement.
Simulation And Evaluation On Handling Stability Of Wheeled Self-Propelled Gun Based On Virtual Prototype, Huibin Hu, Shuxiao Chen, Linlin Li, Liqiao Liu, Lijun Cao
Simulation And Evaluation On Handling Stability Of Wheeled Self-Propelled Gun Based On Virtual Prototype, Huibin Hu, Shuxiao Chen, Linlin Li, Liqiao Liu, Lijun Cao
Journal of System Simulation
Abstract: Based on the summary of usual handling stability research methods, a new kind of simulation and evaluation technology for wheeled Self-Propelled Gun based on virtual prototype and actual equipment test was put forward. In MSC.ADAMS/Car environment, virtual prototypes of suspension, tire, steering, engine, transmission subsystems and wheeled Self-Propelled gun were established. Actual equipment test and simulation based on virtual prototype of invariable radius turning test were carried out. The creditability and accuracy of virtual prototype were verified by comparing the simulation results and the test data. Steady turning characteristics were taken as example to illustrate the handling stability …
Online Identification Path Following Cascade Control Of Non-Holonomic Mobile Robot, Zilong Liu, Shaokai Hu, Liu Jie, Yagang Wang
Online Identification Path Following Cascade Control Of Non-Holonomic Mobile Robot, Zilong Liu, Shaokai Hu, Liu Jie, Yagang Wang
Journal of System Simulation
Abstract: A DC motor driven wheeled mobile robot path following control problem was considered, where the robot model was regarded as a cascade system consisting of the equation of the drive motor and the mobile robot kinematics equations. Taking the output speed of motor-driven equation as the input of the kinematic equations, identifying these time-varying parameters of the driven equation online, adding the values after identification to the controller, a feedback linearization path following control scheme was proposed. The scheme both investigates the dynamic characteristics of kinematics model and motor drive, so that the results better follow the actual cases …
Time-Cost Risk Analysis For Complex Product Development Project By Simulation, Baosen Yang, Yang Nan, Cui Li
Time-Cost Risk Analysis For Complex Product Development Project By Simulation, Baosen Yang, Yang Nan, Cui Li
Journal of System Simulation
Abstract: Since complex product R&D project is characteristic with more stochastic factors, a dynamic simulation model of stochastic activity network was established for complex product R&D projects by consideration of the activity iteration and its dynamic characteristics. The methods of describing task rework probability, rework impact, iteration rework policy and so on were researched deeply. A case study illustrates the modeling process and the result of simulation.
Simulation Study On Damage Localization Of Large Generator Stator Insulation Based On Guided Waves, Li Hao, Ruihua Li, Hu Bo, Pan Ling, Qiyi Guo
Simulation Study On Damage Localization Of Large Generator Stator Insulation Based On Guided Waves, Li Hao, Ruihua Li, Hu Bo, Pan Ling, Qiyi Guo
Journal of System Simulation
Abstract: A stator insulation damage localization method based on guided waves was proposed. The dispersive curve was obtained by solving the Rayleigh-Lamb equations. Finite structure models of four typical groundwall insulation damage, i.e. void, delamination, longitudinal and transverse crack were established by FEM software Abaqus, in which the excitation, acquisition and propagation properties of guided wave were numerical simulated. Based on that, wavelet scalogram was used to extract the flight time of damage-scattered wave to obtain the insulation damage location. Analysis was conducted to compare the location precision under each wave modes. Simulation results indicate that the method is …
Simulation And Test Of Mold Transport Mechanism Of Multi Mold Cycle Production Line, Yanjun Xiao, Liu Rui, Haiping Song, Jing Ran, Lihu He
Simulation And Test Of Mold Transport Mechanism Of Multi Mold Cycle Production Line, Yanjun Xiao, Liu Rui, Haiping Song, Jing Ran, Lihu He
Journal of System Simulation
Abstract: A new mold transport mechanism was put forward. In order to verify its strength and stability, a three-dimensional model of the institution was established making structural static analysis. The model was simplified according to the results of static analysis and the critical load of the mould delivery mechanism was calculated. Then the buckling analysis of the simplified model and the original model was conducted. According to the simulation analysis of the total deformation nephogram, the stress nephogram, critical load and buckling mode, the strength and stability of the mold transport mechanism were verified. The stress concentration area and the …
Application Of Fuzzy Pid Control Based On Neutral Network On High/Low Temperature Environmental Simulation System, Jingwang Jiang, Yunjie Wu, Mengchen Wu
Application Of Fuzzy Pid Control Based On Neutral Network On High/Low Temperature Environmental Simulation System, Jingwang Jiang, Yunjie Wu, Mengchen Wu
Journal of System Simulation
Abstract: High/Low Temperature Environmental Simulation System is mainly used for the functional deploying test of the giant space deployable antenna and some large-scale structures at extreme high/low temperatures, and some other relevant tests. This project requests controlling the parameters of the system in a large range with high accuracy and no overshoot. Temperature control system has features of non-linearity, time-variant, and large delay, which seriously affect the speed and accuracy of the control. However, the conventional PID finds it difficult to achieve desired effect of control. A new scheme of compound control which is referred to as fuzzy-PID control based …
Study On Simulation Modeling Of Dynamics For Landing Gear Of Helicopter With Deck-Landing, Zhang Liao, Guan Wei, Wang Gang, Li Wei, Pan Long
Study On Simulation Modeling Of Dynamics For Landing Gear Of Helicopter With Deck-Landing, Zhang Liao, Guan Wei, Wang Gang, Li Wei, Pan Long
Journal of System Simulation
Abstract: A simulation mathematics model was advanced which introduced the motion data of the deck at wheels/ground contact point into the dynamics model of the landing gear as follows: the space position and the level vector were obtained by computing the space position and pose of helicopter. The altitude and the level vector of the deck at wheels/ground contact point were obtained by computing the ship movement and the space position of helicopter's wheels. The ground reaction force was solved by that regard negative of relative altitude between the tire and the deck at wheels/ground contact point as the compression …
Collaborative Simulation Between Remote Laboratories Based On Fiber-Optic Reflective Memory, Chijun Tian, Shengbing Shen, Yanlei Li, Xianzong Wang, Zhuofeng Guo
Collaborative Simulation Between Remote Laboratories Based On Fiber-Optic Reflective Memory, Chijun Tian, Shengbing Shen, Yanlei Li, Xianzong Wang, Zhuofeng Guo
Journal of System Simulation
Abstract: Taking advantage of independently developed HY-FB2125G Fiber-Optic Reflective Memory network interface and HY-FHX8 fiber-optic hub, the fiber-Optic Reflective Memory network was built and high speed data contribution was realized. With the elaborate design of hub-centered network architecture, simulation laboratories have the ability to process collaborative experiment and reuse test resources, which provides powerful support to accomplish collaborative simulation experiments.
Application Of Flowsim For Traffic Management And Assessment In Shenzhen, Yuhan Jia, Jianping Wu, Yiman Du, Geqi Qi
Application Of Flowsim For Traffic Management And Assessment In Shenzhen, Yuhan Jia, Jianping Wu, Yiman Du, Geqi Qi
Journal of System Simulation
Abstract: Recently many traffic problems are faced by more and more cities. Since traditional method can no longer solve the above problems, and Transportation Demand Management (TDM) solutions are in desperate need. Also, as a successful application of Intelligent Traffic System (ITS), traffic simulation software has become an efficient way to carry out assessment for TDM. The implementation of congestion charge policy in Shenzhen was studied as a demonstration of TDM in China. Then the microscopic traffic simulation software, FLOWSIM, was introduced to simulate the traffic situation to do assessment of congestion charge. Based on the results, advices …
Knowledge Engineering In Simulation Of Parallel Military System, Xiaogang Qiu, Zhang Peng
Knowledge Engineering In Simulation Of Parallel Military System, Xiaogang Qiu, Zhang Peng
Journal of System Simulation
Abstract: Military model is the integration and representation of military knowledge. The main task of military simulation is either to verify the exist knowledge or to produce new knowledge about military activities. By computational experiment, it is able to gain new knowledge about the parallel military system, which is able to enrich the origin knowledge system. Combined with parallel system technology, it's possible to study the evolution process of military knowledge, which is able to help us understand the complexity of military system. From the perspective of knowledge engineering, the processes of knowledge integration, representation and evolution were studied, and …
Research On Dynamic Characteristics Of Hypersonic Vehicle Based On Large Scale Parallel Simulation, Hongyong Chen, Xuanhua Fan, Keying Wang, Fang Ye, Shifu Xiao
Research On Dynamic Characteristics Of Hypersonic Vehicle Based On Large Scale Parallel Simulation, Hongyong Chen, Xuanhua Fan, Keying Wang, Fang Ye, Shifu Xiao
Journal of System Simulation
Abstract: Based on the three predominant algorithms (Implicitly Restarted Krylov-Schur Method and Jacobi-Davidson Method ) and The PANDA Framework, a large-scale parallel computing system for modal analysis was established. The finite element model of typical wave-rider hypersonic vehicle was established and its dynamic characteristics were investigated. The numerical analysis reaches scale of 14,000,000 Degree of Freedoms (DOFs), and the number of MPI Cores is 1024. What's more, the difference of first 100 orders natural frequencies between PANDA and well known commercial software ANSYS is less than 0.01%, and mode shapes are absolutely the same, the efficiency of 1024 cores is …
Design Of Unified Algorithm For Sampling Mpdu, Ti Zhou, Miao Yi, Yang Jian
Design Of Unified Algorithm For Sampling Mpdu, Ti Zhou, Miao Yi, Yang Jian
Journal of System Simulation
Abstract: The standard of CCSDS AOS is used in space exploration because of the process of the standard airspace system. The spacecraft missions have used multi-protocol data unit (MPDU) to multiplex the package channels. The range of MPDU and the data are different in different spacecrafts. This process brings some problems in the maintenance and the correctness of the algorithms of virtual channel multiplexing in simulation system. The applications of CCSDS in the world were researched, and the general definitions of MPDU in these missions were described. A circle memory was given to buffer the data of MPDU, two general …
Wiftcpn Formalized Decision-Making For Auv Formation System Under Uncertainty, Lili Hao, Gu Hao, Fengju Kang, Huizhen Yang
Wiftcpn Formalized Decision-Making For Auv Formation System Under Uncertainty, Lili Hao, Gu Hao, Fengju Kang, Huizhen Yang
Journal of System Simulation
Abstract: Usually the acquired target information is not sufficient and certain enough due to inaccurate measurements, inconsistent granularity and noise, which results in the AUV formation decision-making system having some characteristics, such as discrete, time delay, hierarchical, fuzzy, inconsistencies. Therefore, an integrated formal approach of modeling, simulation and verification based on weighted intuitionistic fuzzy timed colored petri net (WIFTCPN) was proposed. The mapping relationship between WIFTCPN and fuzzy time, time delay and intuition fuzzy inference rules were established. Furthermore, corresponding reasoning decision simulation model under uncertain information was built by using CPN Tools. The properties including liveness, home and fairness …