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15th international conference on Parallel Computational Technologies, PCT 2021

15th International Conference on Parallel Computational Tech...

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15th international conference on Parallel Computational Technologies, PCT 2021

ISBN: (纸本)9783030816902

The proceedings contain 22 papers. The special focus in this conference is on Parallel Computational Technologies. The topics include: Exploring the Limits of Problem-Specific Adaptations of SAT Solvers in SAT-Based Cryptanalysis;FRaGenLP: A Generator of Random Linear Programming Problems for Cluster Computing Systems;application of the AmgX Library to the Discontinuous Galerkin Methods for Elliptic Problems;conjugate Direction Methods for Parallel Deflation;research of the Mechanism of External Hormonal Regulation of the Development of Phyto- and Zooplankton Populations Using Supercomputer Technologies;Luthien: A Parallel PIC Code for modeling the Interaction of Focused Electron Beams with Plasma;simulation of Heat and Mass Transfer in Open Geothermal Systems: A Parallel Implementation;supercomputer-Based simulation of the Hydrodynamics of River Mouth Areas;system for the Visualization of Meshes of Big Size Obtained from Gas-Dynamic simulations;development and Practical Application of Methods for Detecting Similar Supercomputer Jobs;finite Element simulation of the Influence of the Bending Roll Profile on the Stress-Strain State of Billets for Longitudinal-Welded Rolled Pipes;digital Twins of Geological Objects: Development and Use;a Parallel Algorithm to Compute the Transport of Suspended Particles Based on 3D Models;detecting Changes in Communication Properties of Parallel Programs by InfiniBand Traffic Analysis;transformation of Graphs with Associative Operations in Terms of the Set@l Programming Language;GPU-Accelerated Fuzzy Inference Based on Fuzzy Truth Values;deflation of Periodic Orbits in Large-Scale Systems: Algorithm and Parallel Implementation;parallel Computations for Solving Multicriteria Mixed-Integer Optimization Problems;parallel Intelligent Computing in Algebraic Problems;CUDA Implementation of an Algorithm for Batch Mode Detection of Collisions.

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Atomistic Behavior of Deformed Au Thin Film during the Indentation Process

Atomistic Behavior of Deformed Au Thin Film during the Inden...

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Innovative Research in Applied Science, Engineering and Technology (IRASET),conference on

作者： Abdelkarim Ou-khouya Hassane Mes-adi Meryem Taoufiki Imane Ait Ibrahim Amin El Harfouf Rachid Herbazi Mohamed Tahiri Process Engineering Computer Science and Mathematics Laboratory Khouribga National School of Applied Sciences Sultan Moulay Slimane University Khouribga Morocco Faculty of Sciences and Techniques Sustainable Development Laboratory Sultan Moulay Slimane University Beni-Mellal Morocco Departement of Physics Laboratory of Condensed Matter and interdisciplinary Sciences CNRST Labeled Research Unit Faculty of Sciences Mohamed V University Rabat Morocco Department of Physics Polydisciplinary Faculty of Khouribga University of Sultan Moulay Slimane Khouribga Morocco Intelligent Systems and Applications Laboratory (LSIA) EMSI Tangier Morocco

ISBN: (数字)9798350309508

ISBN: (纸本)9798350309515

In this study, we investigate the mechanical properties of gold (Au) materials using molecular dynamics simulations. In this simulation, the nanoindentation process was performed to analyze the deformation defects and hardness properties of Au under different indentation velocities. The results suggest that the deformation behavior of the Au specimen was affected by different indentation velocities. These findings were confirmed by examining the load-displacement curve, which indicated elastic deformation through the appearance of a linear load-displacement relationship at low indentation velocities. In contrast, plastic deformation was identified by the presence of intensified serrations in the load-displacement curve at higher indentation velocities. Under such conditions, the hardness exhibited minimal variation when the indenter velocity increased from 5 mls to 10 mls. However, a significant increase in hardness was noted when the indentation velocity was further raised to 15 mls.

关键词： Deformable models Gold Analytical models Deformation Dynamics Plastics Load modeling

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Optimization and modeling of High-speed Flying Train Communication System Based on Colored Petri Nets

Optimization and Modeling of High-speed Flying Train Communi...

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2021 IEEE international conference on Power, Intelligent Computing and Systems, ICPICS 2021

作者： Lin, Jingyu Yue, Qihong Liu, Xiangqian Beijing Jiaotong University School of Computer and Information Technology Beijing China

ISBN: (纸本)9781665441308

As a new transportation form, High-speed Flying Train (HFT) has received considerable attention in recent years. In this paper, the communication system is optimized according to the characteristics of HFT, which play a crucial role in their operation. Specifically, a modified communication system based on dual-redundant automatic Ethernet and 5G wireless communication is proposed. In this scheme, dual-redundant automatic Ethernet is used as the terrestrial core network to improve transmission efficiency, and 5G wireless communication network is utilized as the vehicle-to-ground communication system to address the problem of data transmission delay in high-speed operation. Moreover, colored Petri nets (CPN) are applied to model the communication system structure in the scheme hierarchically. Transmission reliability and real-time performance are evaluated using frame transmission loss and transmission delay. Finally, the simulation results verify that the optimization scheme can improve the real-time performance and reliability of the communication system. © 2021 IEEE.

关键词： Ethernet

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modeling and simulation Study of Hydraulic Turbine Governor Based on SIMULINK

Modeling and Simulation Study of Hydraulic Turbine Governor ...

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Automation, Robotics and computer Engineering (ICARCE), international conference on

作者： Haiming Zhang Jun Liu Yun Liang Guangxi Vocational College of Water Resources and Electric Power Nanning China

ISBN: (纸本)9781665475495

The turbine governor is one of the most important devices for the automatic and intelligent control of hydropower stations. As a key part of the hydraulic turbine governor, the structure and control mode of the electro-hydraulic servo system is crucial, which has a direct impact on the quality of the AC power output and is also related to the operational safety of the power station equipment. In this paper, a hydraulic turbine electro-hydraulic governor based on PLC using PID control algorithm is developed. A hydraulic servo system is established with a high-speed switching valve as the core. The system consists of two small diameter high-speed ball valves and a large diameter electromagnetic reversing valve as the control circuit, and the two high-speed switching valves are controlled by PLC outputting two PWM pulse signals respectively. A mathematical model of the hydraulic turbine speed control system is established and simulated in the Matlab SIMULINK environment. The static characteristics test under no-load condition and the follow-on system disturbance test are carried out in the laboratory to verify the control performance of the system under this operating condition.

关键词： Hydraulic turbines Software packages Velocity control Switches Valves Mathematical models Servomotors

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simulation of Electrical Physical Processes in Electro-Energetic Systems at Thunderstorm Conditions 15

Simulation of Electrical Physical Processes in Electro-Energ...

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15th international conference on Advanced Trends in Radioelectronics, Telecommunications and computer Engineering (TCSET)

作者： Rezinkina, Marina Rezinkin, Oleg Lytvynenko, Svitlana Natl Tech Univ Kharkiv Polytech Inst Kharkiv Ukraine

ISBN: (纸本)9781728155661

Model for simulation of electrical physical processes at lightning attachment to ground objects containing sensitive electronics, telecommunication and computer engineering equipment has been presented. This model takes into account all possible places of lightning strokes origin with regard of probability of lightning appearance with different currents and potentials. Adequacy of the model has been checked by comparison with the normalized experimental data. The model has been used for choice of the reliable means of defense from lightning strokes to an object with sensitive electronic equipment.

关键词： simulation mathematical modeling ground objects with sensitive electronics probability of lightning attachment reliable lightning protection lightning rods protective catenaries

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Multi-Model Fusion Based NOx Emission Prediction for Power Plant Boilers 6th

Multi-Model Fusion Based NOx Emission Prediction for Power P...

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6th international conference on Data Mining and Big Data, DMBD 2021

作者： Lin, Kangwei Xiong, Guangsi Jiang, Wenchao Xiao, Hong Tang, Jia Zhao, Cong School of Computer Science and Technology Guangdong University of Technology Guangzhou510006 China Guangzhou Yunshuo Technology Development Co. Ltd Guangzhou Guangdong511458 China

ISBN: (纸本)9789811674754

In view of the complex characteristics of nonlinear and multi operating conditions in the boiler combustion process of power station, a NOx prediction method of boiler combustion process based on MiniBatchKMeans clustering and Stacking model fusion is proposed. This method optimizes the clustering and division of training sets by applying MiniBatchKMeans clustering algorithm, and establishes the stacking fusion framework prediction model (Stacking-XRLL) based on the XGBoost, Random Forest, LightGBM and the Linear Regression, so as to realize the accurate prediction of NOx emissions under the variable operating conditions of power plant boilers. Taking the NOx emission data of a power plant boiler in Guangdong as an example, the modeling simulation and experiment results shows that compared with the single modeling methods such as the BP, the LSTM and the GRU neural network, the Stacking-XRLL modeling method has higher generalization ability and prediction accuracy, and the average accuracy reaches 99%. © 2021, Springer Nature Singapore Pte Ltd.

关键词： Clustering algorithms

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Design and research of automatic fishing machine based on acoustic adjustment 7

Design and research of automatic fishing machine based on ac...

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2020 7th international conference on computer-Aided Design, Manufacturing, modeling and simulation, CDMMS 2020

作者： Liu, Yixuan Hou, Zhongshi Cui, Jianhua You, Kui Leicester International Institute Dalian University of Technology Panjin Liaoning124221 China

In this paper, an automatic fishing machine based on acoustic conditioning was developed and tested in a reservoir. The floating catcher is remotely and automatically controlled to operate underwater speakers, feeders and underwater cameras that monitor fish behavior in real time. The open net fence installed underneath the system can be automatically closed to catch captured fish. And in this paper, we monitor and discuss the dynamics of fish populations in the net box. With classic conditional reflexes, fish can associate sound signals with food. Also, in order to strengthen the conditioned behavior of fish swimming freely in the reservoir, we employ regular training. With the utility of an audible signal which is to attract fish around the catcher, the catcher can catch fish and automatically close the net fence around them: fish catches in this particular event are 2.5 times as much as ones in a controlled event. In controlled events, the net fence is automatically closed without summoning fish. © 2021 Institute of Physics Publishing. All rights reserved.

关键词： Fish

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Servo Drive with PWM Controller simulation

Servo Drive with PWM Controller Simulation

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Annual Siberian Russian Workshop on Electron Devices and Materials (EDM)

作者： Vladislav D. Popov Yuriy V. Shornikov Dmitry N. Dostovalov Department of Automated Control Systems Novosibirsk State Technical University Novosibirsk Russia Department of Automated Control Systems Novosibirsk State Technical University Institute of Automation and Electrometry of the Siberian Branch of the Russian Academy of Sciences Novosibirsk Russia

ISBN: (数字)9798350389234

ISBN: (纸本)9798350353051

The simulating of a servo drive with symmetrical pulse width controlling is implemented by the ISMA platform. This task is classified as an event-continuous or hybrid system. Since the dynamic processes can be event-driven, the finite-state machine notation by D. Harel (statechart as formalism) is applied to build a mathematical model for the problem. The statechart with three states complying the Cauchy problem is designed, predicates for directed transitions, as well as states equations are defined. The original LISMA language, combining both block and textual coding, which allows to form compact models that correspond bijectively to statechart formalism used for event-driven continuous systems, is applied. A fragment of the LISMA language grammar for determining the states and transitions of hybrid systems is presented. The designed ISMA software is resolved by original explicit and semi-explicit numerical methods with the asymptotic algorithm for event detection, included to the ISMA library. computer experiments demonstrate good results with sufficient accuracy.

关键词： Analytical models Computational modeling Software algorithms Pulse width modulation Mathematical models Software Libraries

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2021 IEEE 62nd international Scientific conference on Power and Electrical Engineering of Riga Technical University, RTUCON 2021 - Proceedings

2021 IEEE 62nd International Scientific Conference on Power ...

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62nd IEEE international Scientific conference on Power and Electrical Engineering of Riga Technical University, RTUCON 2021

ISBN: (纸本)9781665438049

The proceedings contain 83 papers. The topics discussed include: simulation and initial evaluation of modular motor-generator for cost-effective power-assist wheelchair;on the evaluation of customers interruption costs due to unexpected power outages;features of distribution grid optimization;expedience and possibilities of implementation of HV single-transformer substations;determination of the best load parameters for productive operation of PV panels of series FS-100M and FS-110P for sustainable energy efficient road pavement;voltage dips and swells in low voltage networks of Estonia;the system approach for the application of measuring instruments and computer modeling tools for the electrical laboratory for the Bauman Moscow State Technical University;research the phenomenon of motivation, towards to science, through effective teaching, learning, research and scientific writing as the approach for improvement of electrical and power engineering education;motivating intuitive understanding of the switched reluctance machine in the education of undergraduate students;and reliable data communication link implementation via cellular LTE services for static or moving ground equipment control.

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Design and implementation of simulation model for shortwave communication network organization

Design and implementation of simulation model for shortwave ...

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2020 international conference on computer Information and Big Data Applications, CIBDA 2020

作者： Zhou, Yan Fu, Guo-Bin Li, Bin Luo, Ying-Guang Hu, Jia Li, Xiao National University of Defense Technology Academy of Information and Communication Wuhan430010 China

ISBN: (纸本)9781728198378

Construction of the simulation model of short wave communication network organization is the key to implement the simulation evaluation of short wave communication network organization efficiency. On the basis of analyzing the requirement of simulation model constructing for shortwave communication network organization, the composition, relationship and behavior of simulation entity model are analyzed by entity oriented modeling method, and the class system and information interaction of simulation entity model are designed by UML modeling language. The method of design and implementation of simulation model of short wave communication network organization has been applied in the project of short wave communication network organization efficiency evaluation system, and achieved good results. © 2020 IEEE.

关键词： Efficiency

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