Numerical Simulation of Labyrinth Seal of High Speed EMU Gearbox based on Fluent by Tian Huajun, Fan Naize, Pei Bang, Zhao Jiadong, Miao Weiwei, Ning Ke, Liu Zhongming, Wu Anwei, Li Baokui

“…The numerical simulation of the internal flow field of labyrinth seal is carried out by using the Fluent software,the pressure,speed,velocity vector and turbulence distribution cloud of the internal flow field of the labyrinth seal are obtained. …”
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Simulation Analysis of Cross-axis Magnetic Gear Characteristic by Wei Jie, Huiqing Lan

“…Finally， the optimized structure of the cross-axis magnetic gear and its magnetic induction intensity cloud map are obtained. The results show that the reasonable structure and working characteristics of the cross-axis magnetic gear can be obtained by simulation， and the larger torque and better magnetic induction distribution can be obtained. …”
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Research on the cooperative offloading strategy of sensory data based on delay and energy constraints by Peiyan YUAN, Saike SHAO, Ran WEI, Junna ZHANG, Xiaoyan ZHAO

“…The edge offloading of the internet of things (IoT) sensing data was investigated.Multiple edge servers cooperatively offload all or part of the sensing data initially sent to the cloud center, which protects data privacy and improves user experience.In the process of cooperative offloading, the transmission of the sensing data and the information exchange among edge servers will consume system resources, resulting in the cost of cooperation.How to maximize the offloading ratio of the sensing data while maintaining a low collaboration cost is a challenging problem.A joint optimization problem of sensing data offload ratio and cooperative scale satisfying the constraints of network delay and system energy consumption was formulated.Subsequently, a distributed alternating direction method of multipliers (ADMM) via constraint projection and variable splitting was proposed to solve the problem.Finally, simulation experiments were carried out on MATLAB.Numerical results show that the proposed method improved the network delay and energy consumption compared to the fairness cooperation algorithm (FCA), the distributed optimization algorithm (DOA), and multi-subtasks-to-multi-servers offloading scheme (MTMS) algorithm.…”
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STUDY ON ACOUSTIC CONTRIBUTION ANALYSIS METHOD OF AUTOMOBILE TRANMISSION HOUSING by ZONG BangFei, CHU ChaoMei, HUANG Chen, LIU ChunZhen

“…Then, by analyzing the contribution of modal acoustics at peak frequency, the modal order of the larger contribution to the noise is obtained, and the local area with large acoustic contribution is obtained from the modal cloud. Finally, the localized region of the acoustic contribution is analyzed by the acoustic section contribution analysis, so as to find out the acoustic Contribution to the larger and need to improve the specific parts. …”
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Permeability Evolution of an Intact Marble Core during Shearing under High Fluid Pressure by Yuan Wang, Yu Jiao, Shaobin Hu

“…After establishing a numerical model based on the point cloud data generated by the three-dimensional (3D) laser scanning of the fracture surfaces, we found that there are some contact areas that block the percolation channels under high effective stress conditions. …”
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HOW TO ANALYZE BIG DATA: A STUDY ON UNDERSTANDING WHAT THE TURKISH THINK ABOUT SYRIAN REFUGEE CRISIS by Pınar Aslan, Tuğçe Ertem Eray

“…This paper seeks ways of making meaningful data out of the cloud called Syrian refugees crisis. The piece of news selected mentions Alan Kurdi in the headline. …”
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Distributed abnormal traffic detection method for SDN based on deep learning by WANG Kun, FU Yu, DUAN Xueyuan, YU Yihan, LIU Taotao

“…This method constructed a “one-to-many” distributed generative adversarial network (D-VAE-WGAN) with a discriminator deployed on a cloud server and multiple generators deployed on SDN controllers. …”
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Design and Characteristic Research of the Spindle Box of Vertical Machining Center by Gao Dongqiang, Yang Lei, Sun Qian, Zhang Xifeng

“…Headstock is the key components of the high speed vertical machining center,its static stiffness,dynamic characteristics has great effect on machining precision and stability of machining center.Taking DVG850 high speed vertical machining center spindle box as the research object,the design scheme of geometrical model of four kinds of different structure of spindle box is established,by using the finite element simulation software,the simulating calculation of the statics,modal and harmonic response of the spindle box are carried out,the resonance region of spindle box under static stiffness,natural frequency,vibration mode and the excitation frequency are got.Through the comparison analysis of finite element simulation of cloud and data,known that scheme two rib structure is the best layout,it is indicated that the research method can be to improve the spindle box structure natural frequency and increase the structure stiffness.provides the basis for avoiding resonance,for other machine tool spindle box the theory basis for optimization of structural design and improvement is provided,the design cycle can be shorten.…”
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Design and implementation of mobile video service quality analysis system by Gang ZHAO

“…Customer perception of mobile video service not only depends on the quality of the network,but also depends on the role of “end,pipeline,cloud,platform”.It is urgent to change the quality assurance mechanism based on the network itself to the end-to-end horizontal integration of customer perception.To solve these problems,the design and implementation of a mobile video service quality analysis system was introduced.The analysis model was established from service,flow direction,area,network element,community and terminal in order to analyze the data source in each part of the mobile video service; key KQI and changing trend of video services was presented,constant performance monitoring was carried out; the problem was found from the users’ perspective,trend analysis of performance deterioration,cause analysis of performance deterioration; automatic or manual processing of the identified problems by distribution work order was carried out,the problems were solved by antomatically or manual dispatch,closed-loop management mechanism was established.This system could improve the management level of mobile video service quality and reduce the cost notably significantly.The framework of the system and the realization of main function part was introduced in detail,and examples of system applications were described.…”
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Application and development of Internet of things in medical service by Zhibiao WANG, Peng RAN, Qiao CHEN

“…With the continuous development of information technology,such technologies as the Internet of things,sensors,mobile terminals and big data are being fully used in medical services.Intelligent medical care has also become a new goal of hospital information construction.The emergence and development of Internet of things technology were analyzed,the importance of this technology in the field of medical and health construction were summarized,which helped to improve the efficiency and quality of medical process services,improved the level of comprehensive hospital management.Two aspects were mainly elaborated:one was the intelligent medical system based on the Internet of things,which provided medical and health interactive services to users,and promoted the transformation of disease from therapeutic intervention to preventive intervention; the other was the intelligent medical system based on the Internet of things,promoted cloud computing and real-time transmission and sharing of large data in medical information.The application of this technology improved the utilization of medical resourced,reduced the cost of medical treatment,and changed the traditional mode of medical treatment.It is foreseeable that intelligent medical services based on Internet of things will become an indispensable part of people’s healthy life.…”
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Development and Prospect of Water Quality Monitoring Technology Driven by Data-model Coupling by ZHU Lijie, HE Kai, HUANG Sheng, YIN Qidong, DAI Chao

“…Wireless sensor networks and remote sensing have gradually become the mainstream technologies for data collection, while the further use of cloud platforms and various databases has enhanced the development of real-time water quality monitoring. …”
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المستودعات الرقمية المؤسسية في الأدبيات العربية والأجنبية: مراجعة علمية by غادة حمدى محمد الخطيب

“…Among the studies that received the largest number of research results was the role of institutional digital repositories as an important indicator to highlight this role among researchers, while the least addressed topics were topics related to the most important modern fields such as: artificial intelligence, cloud computing, augmented and virtual reality, and other topics related to importance at the moment. …”
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Safety Assessment of the Cover-and-Cut Method Under Blasting Vibration Induced by Tunnel Excavation by Yunhao Che, Enan Chi

“…The predicted PPV on the roof was up to 1.537 cm/s, which met the safety standards. According to the cloud map of particle vibration velocity and the comprehensive analysis of particle vibration velocity, the degree of impact of artificial structures in the subway tunnel was the central pillar, the underground diaphragm wall, and the roof in order from high to low. …”
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Analysis of the Application of Deep Learning in Model Reconstruction of Ancient Buildings by Zhihong Wang, Hao Xiong

“…Second, the three major schools of architectural modeling technology, mainly the process modeling method, image modeling method, and point cloud modeling method, as well as the inverse process modeling method, which has attracted much attention and challenges in recent years, are summarized in detail. …”
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Privacy-preserving ADP for secure tracking control of AVRs against unreliable communication by Kun Zhang, Kezhen Han, Zhijian Hu, Guoqiang Tan

“…To mitigate information leakage and unauthorized access in vehicular network systems, an encrypted guaranteed-cost policy iteration algorithm is developed, incorporating encryption and decryption schemes between the vehicle and the cloud based on the tracking dynamics. Building on a simplified single-network framework, the Hamilton-Jacobi-Bellman equation is approximately solved, avoiding the complexity of dual-network structures and reducing the computational costs. …”
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TSDSIR: multi-service concurrent message data flow scheduling in robotic systems by DING Nan, JI Chenghui, HU Chuangye, XU Li

“…Aiming at the characteristics of multi-service concurrency and multi-modal message data mixing faced in the robot cloud-edge-end collaboration scenarios, a multi-message dynamic scheduling method oriented to time-sensitive attributes was proposed based on the analysis of the message distribution mechanism in the robot operating system 2 (ROS2). …”
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Joint optimization strategy of service cache and resource allocation in mobile edge network by Long LONG, Zichen LIU, Zaiwang LU, Yucheng ZHANG, Lei LI

“…Aiming at the problem that computing and storage resources of edge node in a mobile edge computing (MEC) system were limited, and excessive task offloading would cause the mismatch between the computing capacity and the load capacity of the edge server, resulting in the increase of task processing delay, the joint optimization of task offloading and storage resources under the three-layer network architecture composed of multi-user, edge server and cloud server was studied to reduce the overall system delay.For the problem was a mixed integer nonlinear problem, a joint optimization strategy of service caching and resource allocation was proposed.First, the continuous and discrete variables of the original problem were decoupled into two sub-problems, namely, the service cache decision problem and the joint optimization problem of computing resources and communication resources.Then, the linear reconstruction, relaxation method and convex optimization method were used to alternately optimize the two sub-problems to obtain the near-optimal solution.Simulation results demonstrate that the proposed strategy can obtain a near-optimal performance with low complexity, and can reduce up to 10% of the task duration compared with other strategies.…”
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Structural Design and Kinematic Analysis of a 10-DOF Exoskeleton Rehabilitation Robot by Guoqiang Ge, Weifeng Zhang, Jinghan Li, Hui Wang

“…Firstly， the structure and characteristics of a 10-DOF exoskeleton upper limb rehabilitation robot are introduced； secondly， the D-H method is used to establish the kinematic equations， and the Robotics Toolbox is applied to verify the correctness of the motion equations； then， the step function is used in Adams to obtain the continuous and stable motion trajectory of the end centroid； finally， the Monte Carlo method is used to compare the obtained workspace cloud image with the motion range of the end of the human arm to verify the rationality of its working range. …”
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Security & safety issues and endogenous security for intelligent connected vehicles by JIA Hongying, LI Yufeng

“…With the rapid development of vehicle-road-cloud integrated system (VRCIS), physical space and cyber space were deeply intertwined, resulting in a brand-new transformation of automobile safety. …”
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Identifying the Optimal Climatic Zones for the Restoration of Oak Forests in Kermanshah Province by Mohammad Baaghideh, Alireza Entezari, Yazdan Babaei, Mohsen Abbasini

“…The results show that there are 7 factors which control the climate of Kermanshah: temperature, wind and precipitation direction, moisture, thunderstorm, wind & dust, shower and cloud. Also clustering technique recognized seven sub climatic regions and the most extensive oak habitat was identified in the foothills regions and the main factor in this regard was the wind-precipitation direction.…”
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