Journal of Computational Methods in Sciences and Engineering最新文献_第7页

Classification and topic tracking of college students’ cybersecurity education based on the internet 基于internet的大学生网络安全教育分类与话题跟踪

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Journal of Computational Methods in Sciences and Engineering Pub Date : 2023-06-10 DOI: 10.3233/jcm-226918

Xuefeng Zhang, Jianhong Zhang

引用次数: 0

Indoor millimeter wave D2D communication resource optimization based on improved PMVC and CTRA algorithms 基于改进PMVC和CTRA算法的室内毫米波D2D通信资源优化

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Journal of Computational Methods in Sciences and Engineering Pub Date : 2023-06-10 DOI: 10.3233/jcm-226916

Tao Fu, Ning Ding, Jihao Gao

{"title":"Indoor millimeter wave D2D communication resource optimization based on improved PMVC and CTRA algorithms","authors":"Tao Fu, Ning Ding, Jihao Gao","doi":"10.3233/jcm-226916","DOIUrl":"https://doi.org/10.3233/jcm-226916","url":null,"abstract":"In order to improve the quality of millimeter wave communication in indoor environment and ensure the maximum use of link resources. It is proposed to construct indoor communication transmission characteristics through multi sphere link model and indoor millimeter wave reflection blocking model. At the same time, the improved PMVC algorithm and CTRA algorithm are used to optimize the resource scheduling of links in indoor central scenes and edge scenes respectively. The simulation results show that compared with the original PVC algorithm and greedy algorithm, PMVC has a maximum link throughput of 5.01 Gbps under the optimized scheduling of the improved vertex coloring algorithm, while the maximum throughput of the traditional vertex coloring algorithm and greedy algorithm are 4.73 Gbps and 4.57 Gbps respectively. In the case of fixed link transmission beam width, as the number of link flows increases, the slot throughput of the link decreases continuously. Under the width of 30, the maximum slot throughput of PMVC algorithm is 2.75 Gbps, and the maximum slot throughput of greedy algorithm is 2.48 Gbps; When the beam width is 60, the maximum slot throughput of PMVC algorithm and greedy algorithm is 2.25 Gbps and 1.55 Gbps respectively. The proposed PMVC resource scheduling method can effectively alleviate the shortage of indoor spectrum resources and reduce indoor transmission interference of millimeter wave.","PeriodicalId":45004,"journal":{"name":"Journal of Computational Methods in Sciences and Engineering","volume":"23 1","pages":"2549-2562"},"PeriodicalIF":0.5,"publicationDate":"2023-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70042818","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

The application of interactive genetic algorithm in the optimization of medical device product form design 交互式遗传算法在医疗器械产品形态优化设计中的应用

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Journal of Computational Methods in Sciences and Engineering Pub Date : 2023-06-10 DOI: 10.3233/jcm-226920

Yueguang Kong

{"title":"The application of interactive genetic algorithm in the optimization of medical device product form design","authors":"Yueguang Kong","doi":"10.3233/jcm-226920","DOIUrl":"https://doi.org/10.3233/jcm-226920","url":null,"abstract":"In order to solve the problem of low efficiency in the form design of medical device products and the inability to meet the needs of users, the research took the gastrointestinal machine of medical device as the research object, extracted the form design genes and semantic genes of medical device products, and constructed the form optimization design model of medical device products based on IGA algorithm. The research took the researcher and user data of the medical device design department as the main data, through crossover, mutation. The satisfactory solution is obtained by genetic process such as selection. Satisfactory solutions were obtained through genetic processes such as crossover, mutation and selection. The 12th generation project with the code of 000011 010001 100000 met the optimal solution, and the consensus satisfaction was 0.829. The research and design model can efficiently and automatically provide solutions for the design optimization of medical devices. It is recommended that the design department send out the best solution of the model, and optimize the solution in more detail again to improve the efficiency and accuracy of function realization.","PeriodicalId":45004,"journal":{"name":"Journal of Computational Methods in Sciences and Engineering","volume":"23 1","pages":"2563-2577"},"PeriodicalIF":0.5,"publicationDate":"2023-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70042859","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

Mathematical analysis of a fourth-order degenerate equation with a nonlinear second-order term 具有非线性二阶项的四阶退化方程的数学分析

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Journal of Computational Methods in Sciences and Engineering Pub Date : 2023-06-09 DOI: 10.3233/jcm-226854

L. Kong, B. Liang, Y. Li, Y. Wang, Xiaoqin Wu

引用次数: 0

Improved artificial fish swarm based optimize rapidly-exploring random trees multi-robot exploration algorithm 改进的人工鱼群优化快速探索随机树多机器人探索算法

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Journal of Computational Methods in Sciences and Engineering Pub Date : 2023-06-09 DOI: 10.3233/jcm-226866

Zhifeng Yao, Quanze Liu, Yong-Guk Ju

引用次数: 0

Evaluation on technical status of concrete cable-stayed bridge based on improved FAHP 基于改进FAHP的混凝土斜拉桥技术状态评价

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Journal of Computational Methods in Sciences and Engineering Pub Date : 2023-06-07 DOI: 10.3233/jcm-226870

Ying Li, Jia Qu

{"title":"Evaluation on technical status of concrete cable-stayed bridge based on improved FAHP","authors":"Ying Li, Jia Qu","doi":"10.3233/jcm-226870","DOIUrl":"https://doi.org/10.3233/jcm-226870","url":null,"abstract":"Because of the large number of components and complex evaluation indexes of long-span bridges, it is necessary to adopt the evaluation method suitable for complex structures. Since the hypothetical membership degree of fuzzy theory and the layer weight of traditional analytic hierarchy process (AHP) may have subjective bias, the evaluation precision may be influenced if it is applied independently in bridge evaluation and thus the fuzzy analytic hierarchy process (FAHP) is more applicable to large-span concrete cable-stayed bridge. The traditional analytic hierarchy process using triangular fuzzy number (FAHP) has the shortcomings of computational errors and limited range, so the improved FAHP is adopted. The improved FAHP method introduces the reliability into the judgment matrix, which can not only solve the existing problems, but also reflect the influence of the fuzziness of the man-made subjective judgment on the result. Based on the detection results for a concrete cable-stayed bridge in Jilin Province, the corresponding hierarchy of index system is established, the trapezoidal function is used to calculate membership degree, and the weight of each index relative to target layer is calculated. Improved FAHP is finally applied to assess the security levels of various parts of this bridge and make comprehensive evaluation on the whole bridge.","PeriodicalId":45004,"journal":{"name":"Journal of Computational Methods in Sciences and Engineering","volume":"23 1","pages":"2687-2697"},"PeriodicalIF":0.5,"publicationDate":"2023-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70061722","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

Study on mechanical properties of poplar timber bending members of ancient buildings strengthened with CFRP sheets embedded CFRP嵌板加固古建筑杨木受弯构件力学性能研究

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Journal of Computational Methods in Sciences and Engineering Pub Date : 2023-06-03 DOI: 10.3233/jcm-226868

Zhaoyang Zhu, Boling Zhang, Wei-Wu Qian

{"title":"Study on mechanical properties of poplar timber bending members of ancient buildings strengthened with CFRP sheets embedded","authors":"Zhaoyang Zhu, Boling Zhang, Wei-Wu Qian","doi":"10.3233/jcm-226868","DOIUrl":"https://doi.org/10.3233/jcm-226868","url":null,"abstract":"The reduction of the section area of timber beams in ancient buildings leads to the decline of their flexural mechanical properties. In order to study the effect of the reinforcement method with near-surface mounted CFRP sheets, three groups of 14 scaled poplar timber beam specimens were designed for static loading tests, and the strengthening effects of the new members replacing the damaged members and the concealed CFRP sheets strengthening the damaged members were compared. The results show that the ultimate flexural capacity and flexural stiffness of the strengthened timber beams are significantly improved compared with the simulated damaged beams; the bending performance of the optimum strengthened timber beam is equivalent to that of the undamaged beam. The distribution of the section strain of the strengthened timber beam along the height of the beam section basically conforms to the plane section assumption. A formula for calculating the ultimate flexural capacity of poplar timber beams strengthened with CFRP sheets is proposed. The calculated results are in good agreement with the experimental results.","PeriodicalId":45004,"journal":{"name":"Journal of Computational Methods in Sciences and Engineering","volume":"248 1","pages":"2609-2619"},"PeriodicalIF":0.5,"publicationDate":"2023-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70061680","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

Improved Zero-DCE for pig face image enhancement with low-light and high-noise 低光高噪猪脸图像增强的改进Zero-DCE

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Journal of Computational Methods in Sciences and Engineering Pub Date : 2023-06-03 DOI: 10.3233/jcm-226858

Ronghua Gao, Jiabin Dong, Qifeng Li, Lu Fenga c

引用次数: 0

Recent progress on chemical vapor deposition growth of 2D materials 二维材料化学气相沉积生长研究进展

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Journal of Computational Methods in Sciences and Engineering Pub Date : 2023-06-03 DOI: 10.3233/jcm-226864

C. Zhang

引用次数: 0

Research on the control method of the structural stability of the precision tiled-grating 精密平铺光栅结构稳定性控制方法研究