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8th International Conference on Control Engineering and Artificial Intelligence, CCEAI 2024

作者： Wei, Zizhong Li, Rui Jiang, Kai Luo, Qingcai Sun, Zongchen Han, Tao Bi, Zixiang Wang, Yang Key Laboratory of Agricultural Blockchain Application Ministry of Agriculture and Rural Affairs Beijing China Inspur Academy of Science and Technology Shandong Jinan China

ISBN: (纸本)9798400707971

With the wide application of Internet of Things, big data and other technologies in smart agriculture, more and more agricultural data are collected and used. The current analysis and processing through IoT platforms and other centralised methods have more serious data security problems. Privacy computing is a technology that completes data security calculations under the premise that both parties do not disclose data, and the data of each participant participates in the calculation is in the form of cipher text to maximally reduce the risk of data leakage. Aiming at the small volume and high frequency scenario of agricultural data, this paper proposes a distributed privacy computing framework by integrating cryptography, edge computing and blockchain, and designs a privacy computing system called PCS-ADS for smart agricultural data. This paper focuses on describing the system model architecture and system function implementation, which includes key business processes, core modules, core algorithms and other parts. Finally, the security and performance evaluation of the system is carried out. The results show that, for sum and variance, the computation time for multi-party under the amount of 1w data of each party is no more than 0.1s, and for the high-frequency computation scenarios, the computation time under the amount of 100 data of each party is no more than 7s and 1.5s, respectively. Experimental results prove that PCS-ADS is effective and has a strong practicality. © 2024 ACM.

关键词： Agriculture

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Protection Mechanism of Underwater Double-Hull Coated with Polyurea and UHMW-PE Subjected to Shock Waves and Bubble Loads 29th

Protection Mechanism of Underwater Double-Hull Coated with P...

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29th International Conference on Computational and Experimental Engineering and sciences, ICCES 2023

作者： Li, Hailong Zhang, Jingyuan Wang, Bo Zhang, Zhifan State Key Laboratory of Structural Analysis for Industrial Equipment School of Naval Architecture Engineering Dalian University of Technology Dalian116024 China 703 Research Institute China State Shipbuilding Corporation Limited Harbin150078 China State Key Laboratory of Explosion Science and Technology Beijing Institute of Technology Beijing100081 China

ISBN: (纸本)9783031425141

Naval ships are severely damaged in near-field underwater explosion. Therefore, it is significant to investigate the mechanism of destruction and protection. In the paper, the Coupled Eulerian–Lagrangian method (CEL) is utilized. The damage characteristics of blasting charge to the double-hull during the underwater explosion are analyzed. After that, protective materials are used in order to enhance the protective performance of the double-hull. Firstly, a numerical model of fluid–solid coupling is established. The complete physical process of double-hull being subjected to shock waves and bubble is simulated in this numerical model. Secondly, the damage characteristics of the double-hull are discussed associated with near-field underwater explosion. Next, the double-hull coated with polyurea (PU) or ultra-high molecular polyethylene (UHMW-PE) subjected to shock waves and bubble, respectively, are analyzed. Multifunctional integrated composite armor is designed according to the equal surface density theory. Finally, the optimal protection design of the double-hull is given. The results show that a small plastic deformation caused by shock waves is found on the outer and inner plates. A large plastic deformation of the outer plate is generated by bubble. Subsequently, the outer plate is sheared. Besides, the optimized double-hull is not sheared off by bubble, which can provide reference for naval ships protection design. © 2024, The Author(s), under exclusive license to Springer Nature Switzerland AG.

关键词： Underwater explosions

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Exploring formation mechanism and source attribution of ozone during the 2019 Wuhan Military World Games:Implications for ozone control strategies

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Journal of Environmental sciences 2024年第2期136卷 400-411页

作者： Lei Zhang Lili Wang Runyu Wang Nan Chen Yuan Yang Ke Li Jie Sun Dan Yao Yuesi Wang Minghui Tao Yang Sun Institute of Atmospheric Physics Chinese Academy of SciencesBeijing 100029China University of the Chinese Academy of Sciences Beijing 100049China Hubei Ecological Environment Monitoring Center Station Wuhan 430072China Guizhou Research and Designing Institute of Environmental Sciences Guizhou Academy of Environmental Science and DesignGuiyang 550081China Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control Jiangsu Collaborative Innovation Center of Atmospheric Environment and Equipment TechnologySchool of Environmental Science and EngineeringNanjing University of Information Science and TechnologyNanjing 210044China School of Environment Key Laboratory for Yellow River and Huai River Water Environment and Pollution ControlMinistry of EducationHenan Normal UniversityXinxiang 453007China Key Laboratory of Regional Ecology and Environmental Change School of Geography and Information EngineeringChina University of GeosciencesWuhan 430074China

A series of emission reduction measures were conducted in Wuhan,Central China,to ensure good air quality during the 7th Military World Games(MWG)in October *** better understand the implications for ozone(O_(3))pollution control strategies,we applied integrated analysis approaches based on the de-weathered statistical model,parameterization methods,chemical box model,and positive matrix factorization *** the MWG,concentrations of O_(3),NO_x,and volatile organic compound(VOCs),OFP(O_(3)formation potential),L_(OH)(OH radical loss rate)were 83μg/m^(3),43μg/m^(3),26 ppbv,188μg/m^(3),and 3.9 s^(-1),respectively,which were 26%,18%,3%,15%,and 13%lower than pre-MWG values and 6%,39%,30%,33%,and 50%lower than post-MWG values,*** removing meteorological influence,O_(3)and its precursors during the MWG decreased largely compared with post-MWG values,and only O_(3),NO_(2),and oxygenated VOCs(OVOCs)declined compared with pre-MWG values,which revealed the emission reduction measures during the MWG played an important role for O_(3)*** six VOCs sources,the mass contributions of biomass burning and solvents usage during the MWG decreased largely compared with pre-MWG values.O_(3)production was sensitive to VOCs and the key species were aromatics,OVOCs,and alkenes,which originated mainly from solvents usage,biomass burning,industrial-related combustion,and vehicle *** O_(3)concentration during the strict control was mainly caused by OVOCs reduction due to biomass burning ***,the O_(3)abatement strategies of Wuhan should be focused on the mitigation of high-reactivity VOCs.

关键词： VOCs Ozone Wuhan Military World Games Source apportionment Relative incremental reactivity Random forest

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Research on defect detection and wall thickness analysis of fully-wrapped carbon fiber reinforced hydrogen storage cylinder for unmanned aerial vehicles by industrial computed tomography

Research on defect detection and wall thickness analysis of ...

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2023 International Conference on Mechatronic Engineering and Artificial Intelligence, MEAI 2023

作者： Shi, Yan Shen, Zitao Zhao, Li Xie, Shijie Miao, Cunjian Tang, Ping Zhejiang Academy of Special Equipment Science Zhejiang Hangzhou310020 China Key Laboratory of Special Equipment Safety Testing Technology of Zhejiang Province Zhejiang Hangzhou310020 China

ISBN: (纸本)9781510674608

The thin-walled structure of fully-wrapped carbon fiber reinforced hydrogen storage cylinders for unmanned aerial vehicles elevates the requirements for mechanical processing and non-destructive testing. Industrial computed tomography technology can offer valuable information on the distribution of the linear attenuation coefficient inside the tested object, enabling intuitive defect detection and size measurement. Here, we conducted defect detection and wall thickness analysis by industrial computed tomography on the hydrogen storage cylinder for unmanned aerial vehicles and found that the thickness of delamination defects at the cylinder neck and cylindrical shell was approximately equivalent. The wall thickness of the Al liner and carbon fiber layer exhibited relative minimum and maximum values at the Al liner abnormal area, respectively, likely resulting from that the sudden thickening of the carbon fiber layer caused the Al liner to shift inward under the additional pressure from the carbon fiber layer. These results proved that industrial computed tomography technology could effectively inspect the quality of hydrogen storage cylinders for unmanned aerial vehicles. © 2024 SPIE.

关键词： Hydrogen storage

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Mast cell degranulation-triggered by SARS-CoV-2 induces tracheal-bronchial epithelial inflammation and injury

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Virologica Sinica 2024年第2期39卷 309-318页

作者： Jian-Bo Cao Shu-Tong Zhu Xiao-Shan Huang Xing-Yuan Wang Meng-Li Wu Xin Li Feng-Liang Liu Ling Chen Yong-Tang Zheng Jian-Hua Wang Guangzhou Institutes of Biomedicine and Health Chinese Academy of SciencesGuangzhou 510530China School of Life Sciences and Medicine University of Science and Technology of ChinaHefei 230026China Key Laboratory of Bioactive Peptides of Yunnan Province Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of SciencesKIZCUHK Joint Laboratory of Bioresources and Molecular Research in Common DiseasesCenter for Biosafety Mega-ScienceKunming Institute of ZoologyChinese Academy of SciencesKunming 650223China University of Chinese Academy of Sciences Beijing 101408China

SARS-CoV-2 infection-induced hyper-inflammation is a key pathogenic factor of *** research,along with others',has demonstrated that mast cells(MCs)play a vital role in the initiation of hyper-inflammation caused by *** previous study,we observed that SARS-CoV-2 infection induced the accumulation of MCs in the peri-bronchus and bronchioalveolar-duct junction in humanized ***,we found that MC degranulation triggered by the spike protein resulted in inflammation in alveolar epithelial cells and capillary endothelial cells,leading to subsequent lung *** trachea and bronchus are the routes for SARS-CoV-2 transmission after virus inhalation,and inflammation in these regions could promote viral *** are widely distributed throughout the respiratory ***,in this study,we investigated the role of MCs and their degranulation in the development of inflammation in tracheal-bronchial *** analyses showed the accumulation and degranulation of MCs in the peri-trachea of humanized mice infected with *** degranulation caused lesions in trachea,and the formation of papillary hyperplasia was *** transcriptome analysis in bronchial epithelial cells,we found that MC degranulation significantly altered multiple cellular signaling,particularly,leading to upregulated immune responses and *** administration of ebastine or loratadine effectively suppressed the induction of inflammatory factors in bronchial epithelial cells and alleviated tracheal injury in *** together,our findings confirm the essential role of MC degranulation in SARS-CoV-2-induced hyper-inflammation and the subsequent tissue ***,our results support the use of ebastine or loratadine to inhibit SARS-CoV-2-triggered degranulation,thereby preventing tissue damage caused by hyper-inflammation.

关键词： SARS-CoV-2 Mast cell(MC) Bronchial epithelial cell Inflammation Tracheal injury

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analysis of the Development of APP on Railway Administrative Law Enforcement

Analysis of the Development of APP on Railway Administrative...

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International Conference on SmartRail, Traffic, and Transportation Engineering, ICSTTE 2023

作者： Pan, Xin Yu, Ting Gan, Youwei Safety Technology Center of the National Railway Administration PRC Beijing100160 China Zhejiang Academy of Special Equipment Science Hangzhou310000 China Key Laboratory of Special Equipment Safety Testing Technology of Zhejiang Province Hangzhou China School of Traffic and Transportation Engineering Changsha University of Science and Technology Changsha410004 China

ISBN: (纸本)9789819736812

With the rapid development of the market economy, the railway, as an essential means of transportation in people’s travel, has been deeply involved in everyone’s daily life, and disputes in the process of railway transportation management and administrative law enforcement have also increased. Since the reform and opening up, significant progress has been made in the construction of the rule of law, and great improvements have been made in administrative law enforcement and public supervision working following the law. But for many reasons, the influence of the railway transportation management organs on administrative law enforcement situation there are still quite a few problems, team construction, following the law execution concept is not thorough, the lack of administrative enforcement of law guarantee, the enterprise legal consciousness is not strong. Other issues still exist in different degrees;these problems existing in the management of railway transportation administrative law enforcement are one of the most outstanding, the most critical questions it’s It shows the importance of the research on this topic. To further improve the level of railway administrative law enforcement, accurately apply laws and regulations, and grasp the nature, circumstances and consequences of illegal acts, the high-speed railway passenger service is fully implemented. The risk of operation safety environment is becoming increasingly prominent, and protecting railway transport and people’s life and property safety according to law is particularly critical and urgent. This paper aims to explore the development of the railway administrative law enforcement APP and provide a reference for the technical support of railway administrative penalties. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2024.

关键词： Railroad transportation

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Transcriptomics and metabolomics analyses provide insights into postharvest ripening and senescence of tomato fruit under low temperature

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Horticultural Plant Journal 2023年第1期9卷 109-121页

作者： Chunmei Bai Caie Wu Lili Ma Anzhen Fu Yanyan Zheng Jiawei Han Changbao Li Shuzhi Yuan Shufang Zheng Lipu Gao Xinhua Zhang Qing Wang Demei Meng Jinhua Zuo State Key Laboratory of Food Nutrition and Safety College of Food Science and EngineeringTianjin University of Science&TechnologyTianjin 300457China College of Light Industry and Food Engineering Nanjing Forestry UniversityNanjingJiangsu 210037China Key laboratory of vegetable postharvest processing Ministry of AgricultureBeijing Key Laboratory of Fruit and Vegetable Storage and ProcessingKey Laboratory of Biology and Genetic Improvement of Horticultural Crops(North China)of Ministry of AgricultureKey Laboratory of Urban Agriculture(North)of Ministry of Agriculture and Rural AffairsInstitute of Agri-food Processing and NutritionBeijing Vegetable Research CenterBeijing Academy of Agriculture and Forestry SciencesBeijing 100097China National Engineering Research Center for Information Technology in Agriculture Beijing 100097China School of Agricultural Engineering and Food Science Shandong University of TechnologyZiboShandong 255049China

Tomato is one of the most important vegetable crops in the world and is a model plant used to study the ripening of climacteric fleshy *** the ripening process of tomato fruit,flavor and aroma metabolites,color,texture and plant hormones undergo significant ***,low temperatures delayed the ripening process of tomato fruit,inhibiting flavor compounds and ethylene *** and transcriptomics analyses of tomato fruit stored under low temperature(LT,5°C)and room temperature(RT,25°C)were carried out to investigate the effects of storage temperature on the physiological changes in tomato fruit after *** results of transcriptomics changes revealed that the differentially expressed genes(DEGs)involved in tomato fruit ripening,including several kinds of transcription factors(TFs)(TCP,WRKY,MYB and bZIP),enzymes involved in cell wall metabolism[beta-galactosidase(β-GAL),pectinesterase(PE)and pectate lyase(PL),cellulose and cellulose synthase(CESA)],enzymes associated with fruit flavor and aroma[acetyltransferase(AT),malic enzyme(ME),lipoxygenase(LOX),aldehyde dehydrogenase(ALDH),alcohol dehydrogenase(ADH)and hexokinase(HK)],genes associated with heat stress protein 70 and genes involved in the production of plant hormones such as Ethylene responsive factor 1(ERF1),Auxin/indoleacetic acids protein(AUX/IAA),gibberellin regulated *** on the above results,we constructed a regulatory network model of the effects of different temperatures during the fruit ripening *** to the analysis of the metabolomics results,it was found that the contents of many metabolites in tomato fruit were greatly affected by storage temperature,including,organic acids(L-tartaric acid,a-hydroxyisobutyric acid and 4-acetamidobutyric acid),sugars(melezitose,beta-Dlactose,D-sedoheptulose 7-phosphate,2-deoxyribose 1-phosphate and raffinose)and phenols(coniferin,curcumin and feruloylputrescine).This study revealed the effects of storage tempera

关键词： Metabolomics Tomato Transcriptomics Temperature Fruit ripening

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Sampling Methods for Efficient Training of Graph Convolutional Networks:A Survey

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IEEE/CAA Journal of Automatica Sinica 2022年第2期9卷 205-234页

作者： Xin Liu Mingyu Yan Lei Deng Guoqi Li Xiaochun Ye Dongrui Fan State Key Laboratory of Computer Architecture Institute of Computing TechnologyChinese Academy of SciencesBeijing 100086 School of Computer Science and Technology University of Chinese Academy of SciencesBeijing 100049 IEEE Department of Precision Instrument Center for Brain Inspired Computing ResearchTsinghua UniversityBeijing 100084China

Graph convolutional networks(GCNs)have received significant attention from various research fields due to the excellent performance in learning graph *** GCN performs well compared with other methods,it still faces *** a GCN model for large-scale graphs in a conventional way requires high computation and storage ***,motivated by an urgent need in terms of efficiency and scalability in training GCN,sampling methods have been proposed and achieved a significant *** this paper,we categorize sampling methods based on the sampling mechanisms and provide a comprehensive survey of sampling methods for efficient training of *** highlight the characteristics and differences of sampling methods,we present a detailed comparison within each category and further give an overall comparative analysis for the sampling methods in all ***,we discuss some challenges and future research directions of the sampling methods.

关键词： Efficient training graph convolutional networks(GCNs) graph neural networks(GNNs) sampling method

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Droplet bouncing electricity generation on graphene substrate

Droplet bouncing electricity generation on graphene substrat...

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2024 International Conference on Materials Physics and Composites, ICMPC 2024

作者： Li, Dan Chen, Nan Key Laboratory of Cluster Science Ministry of Education of China Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials School of Chemistry and Chemical Engineering Beijing Institute of Technology Beijing100081 China YangtzeDelta Region Academy of Beijing Institute of Technology Zhejiang Jiaxing314019 China Tangshan Research Institute Beijing Institute of Technology Hebei Tangshan063000 China

Since the discovery of the phenomenon of droplets bouncing on hydrophobic surfaces, researchers have been dedicated to studying the underlying physical mechanisms of this phenomenon. Particularly, in recent years, researchers have focused on the observation that droplet bouncing can generate electrical signals. Inspired by this, we explore the potential applications of electrical signals generated by droplets (water droplets) bouncing in sensors and other relevant fields. In this study, we chose a well-established reduced graphene oxide (rGO) film, typical in the sensor field, as a substrate to investigate the bouncing electricity generation performance of water droplets on it. Three variable factors were considered, including droplet bouncing on rGO substrates with different inclinations, bouncing of droplets of different sizes at the same inclination on rGO substrates, and droplet dropping frequency, to investigate their effects on the electrical signals. © 2024 Institute of Physics Publishing. All rights reserved.

关键词： Drop formation

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Impacts of CMEs on Earth Based on Logistic Regression and Recommendation Algorithm

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Space(science & technology) 2022年第1期2022卷 351-362页

作者： Yurong Shi Jingjing Wang Yanhong Chen Siqing Liu Yanmei Cui Xianzhi Ao National Space Science Center Chinese Academy of SciencesBeijingChina Key Laboratory of Science and Technology on Environmental Space Situation Awareness Chinese Academy of SciencesBeijingChina University of Chinese Academy of Sciences BeijingChina

Coronal mass ejections(CMEs)are one of the major disturbance sources of space ***,it is of great significance to determine whether CMEs will reach the *** the method of logistic regression,we first calculate and analyze the correlation coefficients of the characteristic parameters of *** parameters include central position angle,angular width,and linear velocity,which are derived from the Large Angle and Spectrometric Coronagraph(LASCO)*** have developed a logistic regression model to predict whether a CME will reach the earth,and the model yields an F1 score of 30%and a recall of 53%.Besides,for each CME,we use the recommendation algorithm to single out the most similar historical event,which can be a reference to forecast CMEs geoeffectiveness forecasting and for comparative analysis.

关键词： Earth forecasting weather

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