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Analysis of troposcatter communication fading characteristics under different weather conditions 不同天气条件下对流层散射通信衰减特性分析
Advances in Engineering Technology Research Pub Date : 2023-10-07 DOI: 10.56028/aetr.8.1.176.2023
Yuchao Zhao, Jincheng Shi, Lizhe Liu
{"title":"Analysis of troposcatter communication fading characteristics under different weather conditions","authors":"Yuchao Zhao, Jincheng Shi, Lizhe Liu","doi":"10.56028/aetr.8.1.176.2023","DOIUrl":"https://doi.org/10.56028/aetr.8.1.176.2023","url":null,"abstract":"Received signals of troposcatter communication are closely related to the weather, and there are currently few short-term analyses of the signals. The basic mode of troposcatter communication and the influence principle of weather system on the received signal were analyzed, the typical troposcatter communication link in North China was observed for a long time, the observation samples under different weather conditions on sunny and rainy days were selected, and the fading of the received signal was statistically analyzed, including signal fading, fading depth and fading speed, which provided reference for the tactical application of troposcatter communication equipment. On rainy days, or from 9 o'clock to 17 o'clock of sunny days, the propagation mode is mainly turbulent scattering, and the signal quality is poor, so it is not suitable to plan heavy-load tasks; From 19 o'clock to 8 o'clock the next morning of sunny days, the propagation mode is mainly stable layer reflection, and atmospheric waveguides often appear, and the quality of the received signal will be greatly enhanced, which can ensure large-capacity data transmission.","PeriodicalId":502380,"journal":{"name":"Advances in Engineering Technology Research","volume":"16 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139322001","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
A Novel Chinese Address Segmentation Method with Self-growth Feature 利用自增长特征的新型中文地址分割方法
Advances in Engineering Technology Research Pub Date : 2023-09-28 DOI: 10.56028/aetr.8.1.169.2023
Yong Zhang, Yingqiu Li, Fengkun Li, Yujun Shen, Yanxin Xu
{"title":"A Novel Chinese Address Segmentation Method with Self-growth Feature","authors":"Yong Zhang, Yingqiu Li, Fengkun Li, Yujun Shen, Yanxin Xu","doi":"10.56028/aetr.8.1.169.2023","DOIUrl":"https://doi.org/10.56028/aetr.8.1.169.2023","url":null,"abstract":"Chinese Address Segmentation (CAS) is a crucial step that can greatly enhance the performance, accuracy, and reliability of geo-coding technology. However, it presents a tremendous challenge due to the inherent lack of obvious word boundaries, complex grammatical and semantic features. To address this challenge, we propose a novel CAS method or model that starts from scratch, without relying on any pre-installed knowledge about Chinese addresses. Instead, it dynamically evolves and grows its knowledge library by leveraging contextual information and comparing addresses during the process of dividing them into address elements. Our approach does not rely on Chinese language or address-element dictionaries, nor does it depend on address statistics. The knowledge library is automatically extracted and organized in a tree data structure. This unique approach allows our method to effectively segment addresses from any area of China, including regions with intricate address expressions, such as the Inner Mongolia Autonomous Region. Experimental results demonstrate that our method achieves high precision in address segmentation.","PeriodicalId":502380,"journal":{"name":"Advances in Engineering Technology Research","volume":"66 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139335249","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
Spatial variability characteristics and source analysis of heavy metals in soils of the Daxia River basin 大夏河流域土壤中重金属的空间变化特征及来源分析
Advances in Engineering Technology Research Pub Date : 2023-09-28 DOI: 10.56028/aetr.8.1.151.2023
Shengwei Wang, Yongqin Wen, Haizhen Wang, Zhongjie Yuan
{"title":"Spatial variability characteristics and source analysis of heavy metals in soils of the Daxia River basin","authors":"Shengwei Wang, Yongqin Wen, Haizhen Wang, Zhongjie Yuan","doi":"10.56028/aetr.8.1.151.2023","DOIUrl":"https://doi.org/10.56028/aetr.8.1.151.2023","url":null,"abstract":"In order to understand the influence of heavy metals on the surrounding environment in the Daxia River basin and provide a scientific basis for environmental pollution prevention and control, 30 heavy metal samples were collected and the contents of five heavy metals, As, Cd, Cr, Cu and Pb, were detected. The contribution rates of As and Cr were 98.36% and 56.14%, respectively, which were mainly influenced by agricultural activities; the contribution rates of Cu and Pb were 42.28% and 89.80%, respectively, which were more influenced by traffic factors; and the contribution rate of Cd was 35.50%, which was influenced by industrial activities. industrial activities, the estimated probabilities indicate a risk of heavy metal pollution in the northeastern part of the study area in the Daxia River basin.","PeriodicalId":502380,"journal":{"name":"Advances in Engineering Technology Research","volume":"46 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139334762","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
Application of large-span steel roof construction technology for low-rise public buildings 在低层公共建筑中应用大跨度钢结构屋顶施工技术
Advances in Engineering Technology Research Pub Date : 2023-09-28 DOI: 10.56028/aetr.8.1.163.2023
Xingxing Xiao, Liwei Guo, Shan Meng
{"title":"Application of large-span steel roof construction technology for low-rise public buildings","authors":"Xingxing Xiao, Liwei Guo, Shan Meng","doi":"10.56028/aetr.8.1.163.2023","DOIUrl":"https://doi.org/10.56028/aetr.8.1.163.2023","url":null,"abstract":"Along with the continuous development of China's construction industry, the scale of public buildings is also expanding, especially the rapid development of high-speed railroads, making more and more complex shapes, large spans and large volumes of station buildings rigid structural roofs are widely used. Based on this, this paper takes a steel roof truss project of a school gymnasium as an example and uses theoretical analysis and empirical research to explain the application of its construction technology, so as to provide some reference for the efficient development of the construction of large-span steel roof of low-rise public buildings.","PeriodicalId":502380,"journal":{"name":"Advances in Engineering Technology Research","volume":"11 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139335166","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
Protection Design and Effectiveness Verification of High-temperature Fire for Civil Aviation Emergency Locator Transmitter 民航紧急定位发射机高温火灾的防护设计和有效性验证
Advances in Engineering Technology Research Pub Date : 2023-09-28 DOI: 10.56028/aetr.8.1.157.2023
Liangtang Liu, Xu Zhou, Yuan Hong, Hao Wang, Liming Yang, Wencai Wu
{"title":"Protection Design and Effectiveness Verification of High-temperature Fire for Civil Aviation Emergency Locator Transmitter","authors":"Liangtang Liu, Xu Zhou, Yuan Hong, Hao Wang, Liming Yang, Wencai Wu","doi":"10.56028/aetr.8.1.157.2023","DOIUrl":"https://doi.org/10.56028/aetr.8.1.157.2023","url":null,"abstract":"Considering the coupling between the heat of emergency locator transmitter and the external high-temperature fire environment, a thermal protection system for external insulation and internal heat absorption is proposed. The external insulation layer consists of flexible nanofiber heat insulation film and quartz ceramics to withstand the thermal impact of the external environment. The internal heat absorption layer is composed of microcapsulated paraffin, which is used to absorb the heat transmitted through the insulation layer and the heat generated by emergency locator transmitter. Using the enthalpy method to establish a transient heat transfer mathematical model of thermal protection system, and the protection performance of the system in high-temperature fire is analyzed. The calculation results show that the system can withstand a high-temperature fire for at least 15 minutes, during which the temperature of emergency locator transmitter is controlled below 60℃. After the fire is over, under the coupling of the waste heat of the incoming system and the heat of emergency locator transmitter, the temperature of emergency locator transmitter continues to rise to a maximum of 107℃. Then, as the influence of the waste heat of the incoming system weakens, the temperature of emergency locator transmitter gradually decreases. Finally, the accuracy of the simulation model and the effectiveness of the thermal protection system are verified through destructive experiments.","PeriodicalId":502380,"journal":{"name":"Advances in Engineering Technology Research","volume":"3 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139335106","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 Application Status of UAV in Agriculture 无人机在农业领域的应用现状研究
Advances in Engineering Technology Research Pub Date : 2023-09-27 DOI: 10.56028/aetr.8.1.55.2023
Hanyao Tang
{"title":"Research on the Application Status of UAV in Agriculture","authors":"Hanyao Tang","doi":"10.56028/aetr.8.1.55.2023","DOIUrl":"https://doi.org/10.56028/aetr.8.1.55.2023","url":null,"abstract":"UAVs are widely used in agriculture. Through high-resolution image and data collection, they help farmers carry out crop monitoring and evaluation, precision agriculture, plant protection and crop spraying. However, there are still challenges such as high cost, low degree of agricultural mechanization, laws and regulations and privacy protection. Future development trends include cost reduction, improvement of data processing and analysis technology, integration with other agricultural technologies, autonomous flight and intelligent technology. The application potential of UAV is huge, which can improve agricultural efficiency and quality, and achieve sustainable development. UAV technology should be popularized and applied, and relevant problems should be solved.","PeriodicalId":502380,"journal":{"name":"Advances in Engineering Technology Research","volume":"6 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139335646","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
RV Reducer Torque Signal Denoising Research Based VMD 基于 VMD 的 RV 减速器扭矩信号去噪研究
Advances in Engineering Technology Research Pub Date : 2023-09-27 DOI: 10.56028/aetr.8.1.140.2023
Weiwen Wu, Zhenxing Zheng, Lei Song, Zhijun Ye, Siqi Xiong
{"title":"RV Reducer Torque Signal Denoising Research Based VMD","authors":"Weiwen Wu, Zhenxing Zheng, Lei Song, Zhijun Ye, Siqi Xiong","doi":"10.56028/aetr.8.1.140.2023","DOIUrl":"https://doi.org/10.56028/aetr.8.1.140.2023","url":null,"abstract":"The RV reducer is a core component in industrial robots, but its performance is facing higher demands due to the expanding application scenarios. Accurately obtaining the torque signal is crucial for achieving precise control of the RV reducer, as torque is an important performance indicator. In this paper, a VMD-based noise reduction method for RV reducer torque signals is proposed, in which the VMD algorithm is used to decompose the original signal, and the IMFs are selected for signal reconstruction by fusing the correlation index and sample entropy. Experimental results show that the proposed method achieves higher SNR and lower MSE after noise reduction, demonstrating its effectiveness. This method provides a foundation for the precise control of RV reducers.","PeriodicalId":502380,"journal":{"name":"Advances in Engineering Technology Research","volume":"38 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139335354","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
Data generation and verification of pipeline transportation based on integration of simulation and DBSCAN algorithm 基于模拟和 DBSCAN 算法集成的管道运输数据生成与验证
Advances in Engineering Technology Research Pub Date : 2023-09-27 DOI: 10.56028/aetr.8.1.107.2023
Xinru Zhang, Lei Hou, Zuoliang Zhu
{"title":"Data generation and verification of pipeline transportation based on integration of simulation and DBSCAN algorithm","authors":"Xinru Zhang, Lei Hou, Zuoliang Zhu","doi":"10.56028/aetr.8.1.107.2023","DOIUrl":"https://doi.org/10.56028/aetr.8.1.107.2023","url":null,"abstract":"Through the analysis and mining of historical data, machine learning method can be used to obtain high accuracy prediction effect without establishing a complex physical model in equipment fault diagnosis, operation condition prediction, and pipeline energy consumption analysis. In the oil and gas pipeline system, the machine learning model unable to gain an ideal training effect with the data set, because of confidentiality of data, imperfect data acquisition technology, low frequency of abnormal working conditions, and other factors. In this paper, aiming at the operation energy consumption of a crude oil pipeline, the power consumption of oil pump unit is simulated by software, which can expand the data. The quality of simulation samples has a great effect on the training results. A DBSCAN algorithm based on Mahalanobis distance is proposed to evaluate the reliability of simulation samples and identify abnormal simulation samples, given the characteristics of virtual samples in pipeline transmission simulation, such as no real value control, feature correlation, and high dimension. Examples have shown that the fitting ability of the model can be improved after the simulation samples for eliminating abnormal data are added to the training set, which provides a new method for the generation and verification of simulation samples.","PeriodicalId":502380,"journal":{"name":"Advances in Engineering Technology Research","volume":"141 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139335397","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 and Verification of Urine Collection Hose Assembly Used for Environment Control and Life Support System 用于环境控制和生命支持系统的尿液收集软管组件的设计与验证
Advances in Engineering Technology Research Pub Date : 2023-09-27 DOI: 10.56028/aetr.8.1.48.2023
Rong Zhang, Xiaohang Cui, Haiou Li, Xiaolei Zhou, Huanhuan Su, Na Li, Ren Li, Kun Liu, Boyi Li, Lei Mao
{"title":"Design and Verification of Urine Collection Hose Assembly Used for Environment Control and Life Support System","authors":"Rong Zhang, Xiaohang Cui, Haiou Li, Xiaolei Zhou, Huanhuan Su, Na Li, Ren Li, Kun Liu, Boyi Li, Lei Mao","doi":"10.56028/aetr.8.1.48.2023","DOIUrl":"https://doi.org/10.56028/aetr.8.1.48.2023","url":null,"abstract":"The urine collection hose assembly is u sed in the urine collection subsystem of the environmental control and life support system (ECLSS) of the space station to connect the products or components in the urine collection subsystem and transmit the working medium. This paper introduces the design scheme and verification test of urine collection hose assembly. The urine collection hose adopts the design scheme of stainless steel wire armored polytetrafluoroethylene hose. Through the verification test, the results show that the scheme can meet the performance requirements of the space station toilet collection subsystem hose assembly.","PeriodicalId":502380,"journal":{"name":"Advances in Engineering Technology Research","volume":"168 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139335405","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 Digitalization Application for Hospital's Heterogeneous Business Data in the Ai Era Ai 时代医院异构业务数据的数字化应用设计
Advances in Engineering Technology Research Pub Date : 2023-09-27 DOI: 10.56028/aetr.8.1.42.2023
Gao Yu, Xunwei Lu
{"title":"Design of Digitalization Application for Hospital's Heterogeneous Business Data in the Ai Era","authors":"Gao Yu, Xunwei Lu","doi":"10.56028/aetr.8.1.42.2023","DOIUrl":"https://doi.org/10.56028/aetr.8.1.42.2023","url":null,"abstract":"The purpose of this article is to construct a hospital big data platform to achieve centralized management of the heterogeneous business systems and historical business data in use by the hospital. By integrating multiple business systems in the hospital through the hospital big data platform, data standards are established and a unified hospital data model is constructed to compatibility with heterogeneous diagnostic data information. This enables standardized storage and data analysis of both new and old business data, providing accurate, scientific, and multi-dimensional data support for clinical applications, scientific research and teaching, operation and management, and intelligent assistance decision-making in hospitals.","PeriodicalId":502380,"journal":{"name":"Advances in Engineering Technology Research","volume":"53 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139335420","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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