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检索条件"任意字段=2021 International Conference on Applied Mathematics, Modeling and Computer Simulation, AMMCS 2021"

共 646 条记录，以下是71-80 订阅

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A Revised PDE for Traffic Lattice Model 3

A Revised PDE for Traffic Lattice Model

引用

3rd international conference on applied mathematics, modeling and computer simulation, ammcs 2023

作者： Ren, Xiufang Zhao, Shiji Department of Mathematics College of Science Nanjing Agricultural University Jiangsu Nanjing China Department of Computer Science College of Information Science and Technology Nanjing Agricultural University Jiangsu Nanjing China

ISBN: (纸本)9781643684581

In this paper, a threshold of sensibility for the stability of a generalized traffic lattice PDE with multiple factors, including lane-changing, multiple sites, multiple density difference, curved lane and multi-mode solutions factors has been derived in detail. The profiles of the density waves are simulated in detail and two indexes, congestion degree and entropy, which have opposite monotonicity are defined to describe the traffic conditions. The technique is based on the perturbation theory and the result can be helpful for minimizing the traffic congestion. © 2023 The Authors.

关键词： Entropy

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The Relational Model between College Students Internet Behaviors and Academic Performance

The Relational Model between College Students Internet Behav...

引用

2021 international conference on applied mathematics, modeling and computer simulation, ammcs 2021

作者： Luo, Hanyun Song, Yong Dong, Jiadong Zhang, Xiaoling Nie, Guoping School of Computer and Information Anqing Normal University China School of Foreign Languages Anqing Normal University China School of Electronic Engineering and Intelligent Manufacturing Anqing Normal University China

ISBN: (纸本)9781643682549

Different internet behavioral habits have different impacts on the studies and life of college students. Using scholarship winners and students who were retaking courses after failing to pass exams as our research samples, we obtained a massive amount of data for these research samples from the internet surfing authentication system and internet behavior audit system within seven months. After data-masking, we used a binary classification logistic equation to establish a regression model of the relationship between college students' internet behaviors and academic performance. We applied SPSS to establish a mathematical model to calculate the duration of internet surfing and browsing content to analyze the internal relationship between college students' internet behaviors and academic performance. We designed an academic performance early warning mechanism for institutions of higher education to enhance evidence-based and targeted decision-making. © 2022 The authors and IOS Press.

关键词： Decision making

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Numerical simulation of the Effect of Slotted Anode on Bottom Cathode Rare Earth Electrolytic Cell Flow Field 4

Numerical Simulation of the Effect of Slotted Anode on Botto...

引用

4th international conference on applied mathematics, modeling and computer simulation, ammcs 2024

作者： Chen, Junqiang Diop, Mouhamadou A. Yang, Youjian Tu, Ganfeng Sun, Shuchen Fu, Daxue Xiao, Faxin School of Metallurgy Northeastern University Shenyang China Shenyang China

ISBN: (纸本)9781643685519

In view of the existing bottom cathode rare earth electrolytic cell has problems such as easy accumulation of gas bubbles at the bottom of the anode, poor overall fluidity of the electrolyte, and unstable electrolysis. In this study, the anode of the bottom cathode rare earth electrolytic cell was improved, and three-dimensional numerical simulation was carried out using the VOF model to investigate the effects of different structures of anodes on the gas-liquid flow characteristics in the electrolytic cell. The results clearly show that the use of slotted anodes can significantly promote the bubble discharge behavior and thus affect the overall flow pattern, in which the double slotted anode having the optimal effect. © 2024 The Authors.

关键词： Flow patterns

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Based on computer Immune Algorithm Model Big Data Security Audit Research

Based on Computer Immune Algorithm Model Big Data Security A...

引用

2021 international conference on applied mathematics, modeling and computer simulation, ammcs 2021

作者： Liu, Xin Luo, Bin Guo, Zhigang Xu, Wenfeng Yu, Xiaodong Hubei Central China Technology Development of Electric Power Co.Ltd 430077 China

ISBN: (纸本)9781643682549

In recent years, with the rapid development of internet big data technology and applications, data security issues have become increasingly serious, and incidents of infringement and theft of citizens' privacy and sensitive data have emerged endlessly. This article mainly uses the computer immune algorithm model to conduct some in-depth research on the big data security audit problem. Data security refers to the use of multiple operation and maintenance technologies to ensure the normal operation of the data system, thereby ensuring the availability, integrity, and confidentiality of data. In the era of the rapid development of the internet, data security is a problem faces by all major companies, especially some large companies such as power companies, which have huge corporate databases and complex data volumes. Once a data security incident occurs during the operation of an enterprise, it will have a major impact on the business and normal operation of the enterprise. At present, in order to effectively avoid data security issues, many companies have adopted security inspections, graded protection, security audits and other methods to deal with data security issues. At present, data security auditing has become more and more popular among enterprises of a certain size, and related work has been started. Data security audits have gradually become the primary technical means for enterprises to prevent data security issues. © 2022 The authors and IOS Press.

关键词： Electric utilities

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Main Methods of Numeric Series Analysis during Study of Biological Systems 11

Main Methods of Numeric Series Analysis during Study of Biol...

引用

11th international conference on Advanced computer Information Technologies, ACIT 2021

作者： Pyanylo, Yaroslav Lopatiev, Anatoliy Vlasov, Andriy Petrus, Mykhailo Demichkovskyi, Andriy Shtangret, Nazar National Academy of Sciences of Ukraine Institute for Applied Problems of Mechanics and Mathematics Dept. for Math. Methods of Computing Experiment in Center of Mathematical Modeling of Pidstryhach Lviv Ukraine National Academy of Sciences of Ukraine Center of Mathematical Modeling of Pidstryhach Institute for Applied Problems of Mechanics and Mathematics Lviv Ukraine Ivan Bobersky Lviv State University of Physical Culture Lviv Ukraine Lviv State University of Life Safety Lviv Ukraine

The paper reviews main methods of numeric series analysis. Major characteristics of probabilistic processing of digital information are presented. As medical and biological processes are very often periodic in nature, the paper presents main methods of determination of parameters of hidden periodicities. In order to validate the need for such research, an actual heart rate spectrum is presented. © 2021 IEEE.

关键词： Biological systems

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Antenna Electromagnetic Compatibility Layout Optimization simulation Based on CST-PSO Hybrid Method 4

Antenna Electromagnetic Compatibility Layout Optimization Si...

引用

4th international conference on applied mathematics, modeling and computer simulation, ammcs 2024

作者： Hu, Xiao Li, Ping Xu, Qinglin Li, Huanli Shi, Jiazhao Xi'an Modern Control Technology Research Institute Shaanxi Xi'an710065 China

ISBN: (纸本)9781643685519

Due to the complex electromagnetic characteristics of different devices and the limited space of the carrier, the electromagnetic compatibility problem of multi-antenna systems is becoming increasingly prominent. How to optimize the antenna layout and reduce the interference coupling of antenna system has become an urgent problem to be solved. To this end, this paper proposed a hybrid CST-PSO method to solve the electromagnetic compatibility layout optimization problem of antenna system. In this hybrid method, the simulation calculation of antenna coupling degree is based on the electromagnetic simulation software CST, and the layout optimization simulation of antenna system is based on the particle swarm optimization (PSO). Based on the hybrid method, the electromagnetic compatibility layout optimization simulation analysis is conducted on a typical multi-antenna system model. The simulation results show that the hybrid method can effectively optimize the layout and reduce the coupling degree of multi-antenna systems. © 2024 The Authors.

关键词： Particle swarm optimization (PSO)

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Mobile Robot Motion Stability and Optimal Chassi Construction 11

Mobile Robot Motion Stability and Optimal Chassi Constructio...

引用

11th international conference on Advanced computer Information Technologies, ACIT 2021

作者： Kuzmych, Olena Cherniashchuk, Nataliia Lishchyna, Nataliia Lishchyna, Valeriy Mekush, Oksana Gumenyuk, Pavlo Lutsk National Technical University Department of Computer Engineering and Cyber Security Lutsk Ukraine Lutsk National Technical University Department of Software Engineering Lutsk Ukraine Lutsk National Technical University Department of Computer Science Lutsk Ukraine Eastern European National University Department of Applied Mathematics Lutsk Ukraine Lutsk National Technical University Department of Automation and Computer Integrated Technologies Lutsk Ukraine

The paper presents the results of dynamical modeling, simulation and stability analysis of mobile robot, which makes it possible to explain some dynamic effects that lead to instability of the straight-line robot's movement and skidding at bends at high speeds. This model is used to analyze the stable motion of wheeled robot in accordance to mutual placement of the wheels and the center of mass during its movement along the straight line. The appropriate recommendations are given on the optimal chassis design to avoid the phenomenon of instability motion. © 2021 IEEE.

关键词： Mobile robots

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Optimization Control of Motor Vehicle at Intersection Based on Green Building Materials

Optimization Control of Motor Vehicle at Intersection Based ...

引用

2021 international conference on applied mathematics, modeling and computer simulation, ammcs 2021

作者： Liang, Zijun Zhan, Xuejuan Kong, Wei Liu, Wei Zhao, Yuanyuan Gao, Yingying Niu, Yiran Qi, Jingjing School of Urban Construction and Transportation Hefei University China Anhui Province Transportation Big Data Analysis and Application Engineering Laboratory China Anhui Dar Intelligent Control System Stock Co. LTD China

ISBN: (纸本)9781643682549

Along with the rapid development of urban social economy, under the influence of sustainable development strategy, urban road traffic engineering design should adhere to the concept of environmental protection and develop towards greening and modernization. Firstly, this method uses the green environmental construction materials, such as hot-melt reflective marking paint, color asphalt concrete pavement and polyurethane elastic isolation column, to build green traffic spaces at intersection;Then on this basis, the motor vehicles signal optimization technology is used to balance the space-time resource allocation of the motor vehicle traffic flow, motor vehicle traffic optimal phase combination analysis method is put forward, and the optimal calculation of motor vehicle traffic time is optimized by the signal timing optimization method that considers the overlapping phase. Finally, through the evaluation and analysis of the VISSIM traffic simulation software, the results show that the method based on green building materials has effectively defined about the green traffic spaces of motor vehicles, and under this premise, the efficiency of motor vehicle traffic is further improved by signal optimization technology, providing the foundation for the research on green traffic on urban roads. © 2022 The authors and IOS Press.

关键词： computer software

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computer Modelling of Thermal Interaction in the Pile Foundation System of a Railway Bridge Support Structure in Permafrost 3

Computer Modelling of Thermal Interaction in the Pile Founda...

引用

3rd international conference on applied mathematics, modeling and computer simulation, ammcs 2023

作者： Filimonov, Mikhail Yu. Vaganova, Nataliia A. Ural Federal University Yekaterinburg Russia Krasovskii Institute of Mathematics and Mechanics UrB Ras Yekaterinburg Russia

ISBN: (纸本)9781643684581

A new model and computer program have been developed to describe the propagation of non-stationary thermal fields in frozen soils with complex lithology for pile foundations of capital construction projects. The results obtained were used to predict changes in the dynamics of the bearing capacity of soil for the emergency support structure of a railway bridge in the permafrost zone. This support structure consists of 12 large-diameter piles, for which solar radiation is also considered for the piles located on the southern part of the support structure, which makes it possible to observe the effect of a thermal bridge, when during the summer season the accumulated heat spreads deeper and faster into the pile than through the ground due to higher thermal conductivity of the pile concrete. In the approach the prehistory of the thermal processes in the soil foundation is essential for the bearing capacity estimation. The results of numerical calculations are presented. © 2023 The Authors.

关键词： Permafrost

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Numerical simulation of Performance of TLD Device with a Ribbed Baffle 2

Numerical Simulation of Performance of TLD Device with a Rib...

引用

2nd international conference on applied mathematics, modeling and computer simulation, ammcs 2022

作者： Huang, Zijuan Chang, Peiran Duan, Yongqiang Li, Guojun Key Laboratory of Thermal Fluid Science and Engineering of Moe Xi'an Jiaotong University Shaanxi Xi'an China

ISBN: (纸本)9781643683522

Tuned liquid damper(TLD) has been widely used to suppress structural vibration, and its combination with elastic components has become a research hotspot. In this paper, a TLD structure with a ribbed baffle is proposed, and the vibration damping performance of the normal baffle and the ribbed baffle has been compared when using rigid material and elastic material, respectively. The partitioned solution of fluid-structure interaction method is used to numerically simulate the horizontal vibration attenuation process of five TLD devices, which proves the superiority of vibration damping performance of ribbed baffles when using elastic materials. The vorticity contour of the two structures with different baffles when using elastic materials is compared, which confirms the superiority of the vibration damping effect of the structure with ribbed baffle. © 2022 The authors and IOS Press.

关键词： Damping

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