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Measurement of medical haemodilatation based on statistical analysis of big data 基于大数据统计分析的医疗血液扩张测量
Journal of Physics: Conference Series Pub Date : 2024-07-31 DOI: 10.1088/1742-6596/2813/1/012008
Xin Wang, Qiang Jiang, Huixiao Chu, Xudong Pu and Tong Cheng
{"title":"Measurement of medical haemodilatation based on statistical analysis of big data","authors":"Xin Wang, Qiang Jiang, Huixiao Chu, Xudong Pu and Tong Cheng","doi":"10.1088/1742-6596/2813/1/012008","DOIUrl":"https://doi.org/10.1088/1742-6596/2813/1/012008","url":null,"abstract":"This study aims to explore the association between hematoma expansion, edema development, and patient prognosis in hemorrhagic stroke patients. Utilizing clinical information, imaging characteristics, and prognostic data from 160 hemorrhagic stroke patients, several predictive models were constructed to examine the pathological progression and outcomes of these patients. Specifically, data preprocessing was employed to calculate the time intervals between each examination and select data within 48 hours for analyzing changes in hematoma volume and its percentage. This facilitated the determination of hematoma expansion within the first 48 hours post-onset, with results documented in a dedicated table. Employing the XGBoost model, both the test and training datasets were trained to develop a predictive model for hematoma expansion. Upon evaluation, the model demonstrated a 75% accuracy rate in predicting hematoma expansion across all patients (sub001-sub160). This study underscores the potential of using advanced predictive modeling, such as XGBoost, to enhance the prognosis assessment and clinical decision-making in hemorrhagic stroke care.","PeriodicalId":16821,"journal":{"name":"Journal of Physics: Conference Series","volume":"193 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141934172","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
Analysis of the resonant converter for multi-terminal collection of DC offshore wind farms 用于直流海上风电场多端收集的谐振变流器分析
Journal of Physics: Conference Series Pub Date : 2024-07-31 DOI: 10.1088/1742-6596/2814/1/012004
Yuge Yue, Quanrui Hao and Ningyi Ma
{"title":"Analysis of the resonant converter for multi-terminal collection of DC offshore wind farms","authors":"Yuge Yue, Quanrui Hao and Ningyi Ma","doi":"10.1088/1742-6596/2814/1/012004","DOIUrl":"https://doi.org/10.1088/1742-6596/2814/1/012004","url":null,"abstract":"With the rapid development of power electronics technology, the offshore wind power system using DC collection and DC transmission is the best solution to increasing offshore distance. Resonant converters achieving soft switching have become a common choice in the DC/DC power conversion system. This paper proposed a design scheme for the multi-terminal collection of DC offshore wind farms based on the resonant converter. The operating principles are analyzed, and variable-frequency control of the converter is utilized to control the output voltage. Simulation verifies the effectiveness of the multi-terminal DC collection system and its control strategy.","PeriodicalId":16821,"journal":{"name":"Journal of Physics: Conference Series","volume":"86 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141934177","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
Design of a Robotic 3D Printing System 设计机器人 3D 打印系统
Journal of Physics: Conference Series Pub Date : 2024-07-31 DOI: 10.1088/1742-6596/2805/1/012001
M Pollák, M Kočiško and J Török
{"title":"Design of a Robotic 3D Printing System","authors":"M Pollák, M Kočiško and J Török","doi":"10.1088/1742-6596/2805/1/012001","DOIUrl":"https://doi.org/10.1088/1742-6596/2805/1/012001","url":null,"abstract":"Additive manufacturing enables the production of complex shapes with a large degree of freedom compared to conventional manufacturing techniques such as injection molding, thermoforming or pressing. In particular, the creation of moving parts, complex structures and large-scale printing remains underexplored and research is constantly expanding. Due to design limitations related to the construction of currently available printers, 3D printing technology is increasingly being combined with robotics. Using a robot to 3D print products eliminates the need to design complex printer structures, which ultimately should simplify the process of manufacturing large-scale products and shorten the time required for preparation and production. The paper deals with the description of the designed 3D printing system and the procedure of the steps of creating a robotic simulation model with the generation of a control program for the FDM 3D printing process by an industrial robot.","PeriodicalId":16821,"journal":{"name":"Journal of Physics: Conference Series","volume":"2013 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141968829","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
Peer Review Statement 同行评审声明
Journal of Physics: Conference Series Pub Date : 2024-07-31 DOI: 10.1088/1742-6596/2814/1/011002
{"title":"Peer Review Statement","authors":"","doi":"10.1088/1742-6596/2814/1/011002","DOIUrl":"https://doi.org/10.1088/1742-6596/2814/1/011002","url":null,"abstract":"All papers published in this volume have been reviewed through processes administered by the Editors. Reviews were conducted by expert referees to the professional and scientific standards expected of a proceedings journal published by IOP Publishing. • Type of peer review: Single Anonymous • Conference submission management system: Morressier • Number of submissions received: 146 • Number of submissions sent for review: 124 • Number of submissions accepted: 77 • Acceptance Rate (Submissions Accepted / Submissions Received × 100): 52.7 • Average number of reviews per paper: 3 • Total number of reviewers involved: 16 • Contact person for queries: Name: Xuexia Ye Email: xx.ye@keoaeic.org Affiliation: AEIC Academic Exchange Information Centre","PeriodicalId":16821,"journal":{"name":"Journal of Physics: Conference Series","volume":"30 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141934173","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
Effect of boundary layer thickness and dimensionless wall distance y+ on numerical simulation of heat pipes 边界层厚度和无量纲壁距 y+ 对热管数值模拟的影响
Journal of Physics: Conference Series Pub Date : 2024-07-01 DOI: 10.1088/1742-6596/2808/1/012061
Wenjie Zhao, Jiajia Deng, Dawen Xue, Lin Xu
{"title":"Effect of boundary layer thickness and dimensionless wall distance y+ on numerical simulation of heat pipes","authors":"Wenjie Zhao, Jiajia Deng, Dawen Xue, Lin Xu","doi":"10.1088/1742-6596/2808/1/012061","DOIUrl":"https://doi.org/10.1088/1742-6596/2808/1/012061","url":null,"abstract":"To consider the sway of boundary layer thickness and dimensionless wall distance y+ on the numerical simulation results of the thermo tube, taking the straight thermo tube as an example, using the continuity equation, momentum equation, energy equation, and turbulence model equation as the controlling equations, and adopting the finite volume method for the spatial discretization, the numerical simulation study of the heat pipe is carried out by controlling the changes of boundary layer thickness and dimensionless wall distance y+. Numerical simulation studies show that the boundary layer thickness and y+ have a large effect on the numerical simulation of heat pipes. Reasonably setting these two parameters within a certain range can improve the accuracy of heat pipe numerical calculations, and the results of the study can provide a reference for the security analysis of thermo tube reaction vessels.","PeriodicalId":16821,"journal":{"name":"Journal of Physics: Conference Series","volume":"47 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141884180","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
Research on improving parallel sequence sampling method in ship type optimization 改进船型优化中并行序列取样方法的研究
Journal of Physics: Conference Series Pub Date : 2024-07-01 DOI: 10.1088/1742-6596/2808/1/012077
Dongqin Li, Lingfeng Lu
{"title":"Research on improving parallel sequence sampling method in ship type optimization","authors":"Dongqin Li, Lingfeng Lu","doi":"10.1088/1742-6596/2808/1/012077","DOIUrl":"https://doi.org/10.1088/1742-6596/2808/1/012077","url":null,"abstract":"To solve the problem of complex and time-consuming simulation calculations in ship type optimization, the application of approximate model technology based on spatial segmentation sequence sampling is becoming increasingly widespread. Based on the Kriging approximation model and the cross-leaving one error method, a new sampling strategy is proposed during the iterative sampling process. The importance of adding sample subspaces and surrounding subspaces is considered in the design space, and parallel thinking is added to develop an efficient parallel sequence sampling method to improve sample aggregation. The proposed method was applied to optimize ship types, and its effectiveness was verified.","PeriodicalId":16821,"journal":{"name":"Journal of Physics: Conference Series","volume":"18 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141887396","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
Research on the process of vertical water entry experiment of truncated cone-shaped projectile 截顶锥形弹丸垂直入水实验过程研究
Journal of Physics: Conference Series Pub Date : 2024-07-01 DOI: 10.1088/1742-6596/2808/1/012051
Zhiyong Zhang
{"title":"Research on the process of vertical water entry experiment of truncated cone-shaped projectile","authors":"Zhiyong Zhang","doi":"10.1088/1742-6596/2808/1/012051","DOIUrl":"https://doi.org/10.1088/1742-6596/2808/1/012051","url":null,"abstract":"In order to study the influence of the diameter and velocity of the truncated head on the cavitation and motion characteristics of the projectile when it enters the water vertically, based on the high-speed camera method, the contrast experiment of the different diameter of the truncated head is carried out, and the influence law of the diameter and velocity of the head on the cavitation and motion velocity is obtained. The experimental results show that the velocity change law of the projectile in the deep closed state is basically the same, and the velocity change law in the process of turning the surface closed state begins to change; With the increase of the initial velocity of the projectile, the earlier the surface closure occurs, the earlier the separation of the cavitation from the tail cavity is, and the later the tail cavity contacts with the liquid surface; In the stage of surface closure, the general velocity rule of the projectile is: first increasing then decreasing, then increasing after smooth transition. When the velocity is high, the law of velocity changes to continuous decline.","PeriodicalId":16821,"journal":{"name":"Journal of Physics: Conference Series","volume":"21 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141884250","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
Strain-rate dependent dynamic constitutive model of tempered glass 钢化玻璃的应变速率相关动态结构模型
Journal of Physics: Conference Series Pub Date : 2024-07-01 DOI: 10.1088/1742-6596/2808/1/012067
Lei Li, Bangxian Liu, Erfeng An
{"title":"Strain-rate dependent dynamic constitutive model of tempered glass","authors":"Lei Li, Bangxian Liu, Erfeng An","doi":"10.1088/1742-6596/2808/1/012067","DOIUrl":"https://doi.org/10.1088/1742-6596/2808/1/012067","url":null,"abstract":"Tempered glass is essentially different from float glass in dynamic mechanical properties, although it is toughened float glass made by physics and they have the same chemical composition. The dynamic mechanical properties of tempered glass are investigated in this paper by using the modified techniques of the Split Hopkinson Pressure Bar (SHPB), and the curves of stress-strain are obtained in various strain rates. Experimental results show that tempered glass is sensitive to strain rates and its dynamic curves of stress-strain are nonlinear. Further study reveals the phenomenon of “pseudo-plastic yield” is completely different from that of ductile materials, and dynamic Young’s modulus and dynamic compressive strength of tempered glass increase with the increasing strain rates. Based on the damage mechanics theory, a kind of constitutive model with damage of tempered glass is given. A strain rate-dependent constitutive model with damage of tempered glass is created by the use of polynomial fitting, according to SHPB experimental results.","PeriodicalId":16821,"journal":{"name":"Journal of Physics: Conference Series","volume":"101 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141887171","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
Analysis of isothermal elastohydrodynamic lubrication on the rough surface of a new type of trident universal joint 新型三叉万向节粗糙表面上的等温弹性流体动力润滑分析
Journal of Physics: Conference Series Pub Date : 2024-07-01 DOI: 10.1088/1742-6596/2808/1/012050
Yutian Xu, Yan Yang, Guowei Wang, Jiahong Niu
{"title":"Analysis of isothermal elastohydrodynamic lubrication on the rough surface of a new type of trident universal joint","authors":"Yutian Xu, Yan Yang, Guowei Wang, Jiahong Niu","doi":"10.1088/1742-6596/2808/1/012050","DOIUrl":"https://doi.org/10.1088/1742-6596/2808/1/012050","url":null,"abstract":"Taking the roughness into consideration, this chapter mainly studies the isothermal elastohydrodynamic lubrication between the slider and the balls in the new three-pronged universal joint and gives the relevant equations under isothermal conditions. The Reynolds equation is the primary tool for iteration, and Matlab is used for programming and plotting. In the simulation experiment, the roughness is given as 0. Then the amplitude and frequency of the roughness are varied to observe the oil film thickness and pressure respectively. With the increase of surface fluctuation, the film thickness in the center of the contact range becomes thicker, the pressure changes more and more sharply, and the peak value of secondary pressure is basically unchanged. As the frequency of the sinusoidal roughness increases, the film thickness in the center of the contact area becomes thinner as the frequency of roughness enhances, the fluctuations become more and more frequent, the pressure fluctuates around the original curve more and more often, and the amplitude becomes larger and larger.","PeriodicalId":16821,"journal":{"name":"Journal of Physics: Conference Series","volume":"217 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141884258","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
Lightweight design of composite sandwich corrugated structures based on variable density method 基于变密度法的复合材料夹层波纹结构轻量化设计
Journal of Physics: Conference Series Pub Date : 2024-07-01 DOI: 10.1088/1742-6596/2808/1/012076
Ce Tian, Zhimin Tian, Xinwei Cao, Shangwei Dong
{"title":"Lightweight design of composite sandwich corrugated structures based on variable density method","authors":"Ce Tian, Zhimin Tian, Xinwei Cao, Shangwei Dong","doi":"10.1088/1742-6596/2808/1/012076","DOIUrl":"https://doi.org/10.1088/1742-6596/2808/1/012076","url":null,"abstract":"For the lightweight design of composite sandwich corrugated structures, a new topology optimization design scheme is proposed using the variable density method. Multi-working conditions static analysis of the composite sandwich corrugated structure is carried out by finite element software. Then, the topology optimization is carried out by using the minimum flexibility method. Finally, the results of different working conditions are coupled to propose a new composite sandwich corrugated structure. The results indicate that the structure has a weight reduction of 34% and exhibits periodicity and continuity while also meeting the necessary mechanical properties to fulfill the engineering requirements. The optimization of composite sandwich corrugated structures has been achieved, providing a new approach to the lightweight design of composite sandwich structures.","PeriodicalId":16821,"journal":{"name":"Journal of Physics: Conference Series","volume":"15 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141884403","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
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