International Journal of Modeling and Optimization最新文献_第4页

Context-Aware Dynamic Object Relationship Modeling 上下文感知的动态对象关系建模

International Journal of Modeling and Optimization Pub Date : 2022-05-01 DOI: 10.7763/ijmo.2022.v12.798

Kentaroh Toyoda, Rachel Gan Kai Ying, Tan Puay Siew, Allan Neng Sheng Zhang

引用次数: 0

Optimal Base Station Network Based on Topological Data Analysis 基于拓扑数据分析的基站网络优化

International Journal of Modeling and Optimization Pub Date : 2022-02-01 DOI: 10.7763/ijmo.2022.v12.792

Min Lyu

{"title":"Optimal Base Station Network Based on Topological Data Analysis","authors":"Min Lyu","doi":"10.7763/ijmo.2022.v12.792","DOIUrl":"https://doi.org/10.7763/ijmo.2022.v12.792","url":null,"abstract":"The decision of which base stations need to be removed due to the cost is always a difficult problem, because the influence on the cover rate of the network caused by the removal should be kept to a minimum. However, the common methods to solve this problem such as K-means Clustering show a low accuracy. Barcode, which belongs to TDA, has the possibility to show the result by identifying the Persistent Homology of base station network. This essay mainly illustrates the specific problem of optimal base station network, which applies the TDA(Topological Data Analysis) methods to find which base stations need removing due to the cost K-means Clustering and Topological Data Analysis methods were mainly used. With the simulated distribution of telecommunication users, K-means Clustering algorithm was used to locate 30 best base stations. By comparing the minimum distance between the results (K=25 and K=30), K-means Clustering was used again to decide base station points to be removed. Then TDA was used to select which 5 base stations should be removed through observing barcode. By repeating above steps five times, Finally the average and variance of cover area in original network, K-means Clustering and TDA were compared. The experiment showed that the average cover rate of original network was 81.20% while the result of TDA and K-means Clustering were 92.13% and 89.87%. It was proved by simulation that it is more efficient to use TDA methods to construct the optimal base station network.","PeriodicalId":134487,"journal":{"name":"International Journal of Modeling and Optimization","volume":"355 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122823655","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

CFD-CAA Method for Prediction of Pseudosound and Emitted Noise in Quadcopter Propeller 四轴飞行器螺旋桨伪声和发射噪声的CFD-CAA预测方法

International Journal of Modeling and Optimization Pub Date : 2022-02-01 DOI: 10.7763/ijmo.2022.v12.794

S. Timushev, A. Yakovlev, D. Klimenko

{"title":"CFD-CAA Method for Prediction of Pseudosound and Emitted Noise in Quadcopter Propeller","authors":"S. Timushev, A. Yakovlev, D. Klimenko","doi":"10.7763/ijmo.2022.v12.794","DOIUrl":"https://doi.org/10.7763/ijmo.2022.v12.794","url":null,"abstract":"Subsonic flow air blade machines like UAV propellers generate intensive noise thus the prediction of acoustic impact, optimization of these machines in order to reduce the level of emitted noise is an urgent engineering task. Currently, the development of calculation methods for determining the amplitudes of pressure pulsations and noise characteristics by CFD-CAA methods is a necessary requirement for the development of computer-aided design methods for blade machines, where the determining factors are the accuracy and speed of calculations. The main objective is to provide industrial computer-aided design systems with a highly efficient domestic software to create optimal designs of UAV blade machines that provide a given level of pressure pulsations in the flow part and radiated noise. It comprises: 1) creation of a method for the numerical simulation of sound generation using the correct decomposition of the initial equations of hydrodynamics of a compressible medium and the selection of the source of sound waves in a three-dimensional definition, taking into account the rotation of blades and their interaction with the stator part of the UAV; 2) decomposition of the boundary conditions accounting pseudo-sound disturbances and the complex acoustic impedance at the boundaries of the computational domain 3) development of an effective SLAE solver for solving the acoustic-vortex equation in complex arithmetic (taking into account the boundary conditions in the form of complex acoustic impedance); 4) testing of a new method at all stages of development using experimental data on the generation of pressure pulsations and aerodynamic noise, including a propeller noise measurements.","PeriodicalId":134487,"journal":{"name":"International Journal of Modeling and Optimization","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133956937","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Sealing The Cracks in the Wear Layer of the Road Surface by Friction against a Rotary Active Element 通过与旋转主动元件的摩擦密封路面磨损层的裂缝

International Journal of Modeling and Optimization Pub Date : 2022-02-01 DOI: 10.7763/ijmo.2022.v12.795

Ş. Ioniţă, Ș. Velicu

引用次数: 0

Design of a VTOL UAV for Anti-poaching Surveillance Missions in the Danube Delta 用于多瑙河三角洲反偷猎监视任务的垂直起降无人机设计

International Journal of Modeling and Optimization Pub Date : 2022-02-01 DOI: 10.7763/ijmo.2022.v12.796

Sorin Andrei Negru, M. Manea, G. Jiga

引用次数: 0

Framework of Experimental Design and Data Mining in Multi-agent Simulation 多智能体仿真实验设计与数据挖掘框架

International Journal of Modeling and Optimization Pub Date : 2022-02-01 DOI: 10.7763/ijmo.2022.v12.791

Fa Zhang, Shihui Wu, Zhihua Song

{"title":"Framework of Experimental Design and Data Mining in Multi-agent Simulation","authors":"Fa Zhang, Shihui Wu, Zhihua Song","doi":"10.7763/ijmo.2022.v12.791","DOIUrl":"https://doi.org/10.7763/ijmo.2022.v12.791","url":null,"abstract":"Multi-agent based simulation (MABS) is an important approach for studying complex systems. The Agent-based model often contains many parameters, these parameters are usually not independent, with differences in their range, and may be subjected to constraints. How to use MABS investigating complex systems effectively is still a challenge. The common tasks of MABS include: summarizing the macroscopic patterns of the system, identifying key factors, establishing a meta-model, and optimization. We proposed a framework of experimental design and data mining for MABS. In the framework, method of experimental design is used to generate experiment points in the parameter space, then generate simulation data, and finally using data mining techniques to analyze data. With this framework, we could explore and analyze complex system iteratively. Using central composite discrepancy (CCD) as measure of uniformity, we designed an algorithm of experimental design in which parameters could meet any constraints. We discussed the relationship between tasks of complex system simulation and data mining, such as using cluster analysis to classify the macro patterns of the system, and using CART, PCA, ICA and other dimensionality reduction methods to identify key factors, using linear regression, stepwise regression, SVM, neural network, etc. to build the meta-model of the system. This framework integrates MABS with experimental design and data mining to provide a reference for complex system exploration and analysis.","PeriodicalId":134487,"journal":{"name":"International Journal of Modeling and Optimization","volume":"99 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116252150","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Architectural Holarchy of the Next Generation Manufacturing System 下一代制造系统的整体架构

International Journal of Modeling and Optimization Pub Date : 2022-02-01 DOI: 10.7763/ijmo.2022.v12.793

G. Frumuşanu, A. Epureanu

{"title":"Architectural Holarchy of the Next Generation Manufacturing System","authors":"G. Frumuşanu, A. Epureanu","doi":"10.7763/ijmo.2022.v12.793","DOIUrl":"https://doi.org/10.7763/ijmo.2022.v12.793","url":null,"abstract":"Nowadays, the global energy network can generate and transmit, between any two points belonging to it, high quantity of energy. During recent years, a global information network, able to process, store, and transmit huge amounts of information, has been developed as well. These networks entirely cover the industrial space, already giving the opportunity to make permanently available, in any of its points, at any time, as much as needed, both energy and information. On the other hand, the mass customization trend has led to the pronounced increase of “manufacturing to order” (MTO) production, taking place in a higher and higher number of small & medium enterprises. At this level, a given manufacturing system cannot be quickly and appropriately configured to a given product, due to production high variability in range. As consequence, the manufacturing system is, quite always, more or less unadjusted to the manufactured product, its performance being significantly affected. Starting from here, the challenge is to make a conceptual rebuilding of the manufacturing system, aiming to increase its degree of appropriateness to products, by taking advantage from the opportunities brought by the existence of global energy & information networks. This paper approach is to see the next generation manufacturing system as holonic modular cyber-physical system. System architecture permanently accords to the manufactured product requirements. The function, procedure, topology and holarchy model of the system are presented. The main features of the system are also revealed.","PeriodicalId":134487,"journal":{"name":"International Journal of Modeling and Optimization","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128973135","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Multi-objective Optimization of a Mechatronic Solar Tracking Mechanisms 某机电一体化太阳跟踪机构的多目标优化

International Journal of Modeling and Optimization Pub Date : 2021-11-01 DOI: 10.7763/IJMO.2021.V11.789

C. Alexandru

引用次数: 0

A Mathematical Model for Tool Sharing between Workers by Exact Solution Approach 用精确解法建立工人共用刀具的数学模型

International Journal of Modeling and Optimization Pub Date : 2021-11-01 DOI: 10.7763/IJMO.2021.V11.790

Ashish Yadav, Jabalpur India Manufacturing

引用次数: 0

Software Platform for the Assisted Research of the Kinematics and Dynamics of Industrial Robots 工业机器人运动学与动力学辅助研究的软件平台

International Journal of Modeling and Optimization Pub Date : 2021-11-01 DOI: 10.7763/IJMO.2021.V11.784

A. Olaru, T. Dobrescu, S. Olaru, I. Mihai

引用次数: 1