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In-Vehicle Network Injection Attacks Detection Based on Feature Selection and Classification

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Automotive Innovation 2024年第1期7卷 138-149页

作者： Haojie Ji Liyong Wang Hongmao qin Yinghui Wang Junjie Zhang biao Chen Key Laboratory of Modern Measurement and Control Technology Ministry of EducationBeijing Information Science and Technology UniversityBeijing 100192China State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body College of Mechanical and Vehicle EngineeringHunan UniversityChangsha 410082China School of Transportation Science and Engineering Beihang UniversityBeijing 100191China Hefei Innovation Research Institute Beihang UniversityHefei 230012China

Detecting abnormal data generated from cyberattacks has emerged as a crucial approach for identifying security threats within in-vehicle *** transmission of information through in-vehicle networks needs to follow specific data for-mats and communication protocols ***,statistical algorithms are employed to learn these variation rules and facilitate the identification of abnormal ***,the effectiveness of anomaly detection outcomes often falls short when confronted with highly deceptive in-vehicle network *** this study,seven representative classification algorithms are selected to detect common in-vehicle network attacks,and a comparative analysis is employed to identify the most suitable and favorable detection *** consideration of the communication protocol characteristics of in-vehicle networks,an optimal convolutional neural network(CNN)detection algorithm is proposed that uses data field characteristics and classifier selection,and its comprehensive performance is *** addition,the concept of Hamming distance between two adjacent packets within the in-vehicle network is introduced,enabling the proposal of an enhanced CNN algorithm that achieves robust detection of challenging-to-identify abnormal *** paper also presents the proposed CNN classifica-tion algorithm that effectively addresses the issue of high false negative rate(FNR)in abnormal data detection based on the timestamp feature of data *** experimental results validate the efficacy of the proposed abnormal data detection algorithm,highlighting its strong detection performance and its potential to provide an effective solution for safeguarding the security of in-vehicle network information.

关键词： Classification algorithm Anomaly detection In-vehicle network Feature extraction Injecting attack

广元市核桃主要病虫害发生特点及综合防控技术

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陕西林业科技 2024年第1期52卷 128-133页

作者：麻文建梁勤彪杨骏李波马甲强陶园媛张冉广元市林业科学研究院广元市林业局广元市天然林资源保护工程管理中心广元市园林绿化事务中心四川广元628000

为了解广元地区核桃主要病虫的种类与分布危害情况,笔者2019-2022年对广元核桃栽植区主要病虫害进行了系统调查。调查发现,广元地区核桃主要病虫害共有15种。通过调查明确了广元地区核桃主要病虫害种类、分布、危害症状及发生规律,并有... 详细信息

为了解广元地区核桃主要病虫的种类与分布危害情况,笔者2019-2022年对广元核桃栽植区主要病虫害进行了系统调查。调查发现,广元地区核桃主要病虫害共有15种。通过调查明确了广元地区核桃主要病虫害种类、分布、危害症状及发生规律,并有针对性地提出了防治方法,为核桃病虫害的诊断和防治提供参考,也为全市核桃产业健康发展提供了一定的技术支持。

关键词：广元核桃病虫害防治技术

Garnet and Zircon U-Pb Geochronology and Geochemistry Reveal Genesis of the Dafang Au-Pb-Zn-Ag Deposit,Southern Hunan

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Acta Geologica Sinica(English Edition) 2024年第3期98卷 717-735页

作者： JIANG Hua KONG Hua LIU biao TAN Fucheng qin Yixue HUANG Jingang ZHU Yu Key Laboratory of Metallogenic Prediction of Nonferrous Metals and Geological Environment Monitoring Ministry of EducationSchool of Geosciences and Info-PhysicsCentral South UniversityChangsha 410083China School of Geosciences and Info-Physics Central South UniversityChangsha 410083China Hunan Baoshan Nonferrous Metals and Minerals Co. Ltd.ChenzhouHunan 424402China

Garnet is a primary mineral in skarn deposits and plays a significant role in recording copious mineralization and metallogenic *** study systematically investigates the geochemistry and geochronology of garnet and zircon in the Dafang Au-Pb-Zn-Ag deposit,which represents prominent gold mineralization in southern Hunan,*** samples with distinct zoning patterns and compositional variations were identified using various analytical techniques,including Backscattered Electron(BSE)imaging,Cathodoluminescence(CL)response,textural characterization,and analysis of rare-earth elements(REE),major contents,and trace element *** garnet was dated U-Pb dating,which yielded a lower intercept age of 161.06±1.93 *** age is older than the underlying granodiorite porphyry,which has a concordia age of 155.13±0.95 Ma determined by zircon U-Pb *** results suggest that the gold mineralization may be related to the concealed *** groups of garnet changed from depleted Al garnet to enriched Al garnet,and the rare earth element(REE)patterns of these groups were converted from light REE(LREE)-enriched and heavy REE(HREE)-depleted with positive europium(Eu)anomalies to medium REE(MREE)-enriched from core to rim *** different REE patterns of garnet in various zones may be attributed to changes in the fluid environment and late superposition *** development of distal skarn in the southern Hunan could be a significant indicator for identifying gold mineralization.

关键词： garnet and zircon U-Pb dating LA-ICP-MS mapping Dafang Southern Hunan

Cloning and Expression Pattern of a Gene Encoding a Putative Plastidic ATP/ADP Transporter from Helianthus tuberosus L.

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Journal of Integrative Plant Biology 2005年第9期47卷 1123-1132页

作者： Kun MENG Tuan-Jie CHANG Xiang LIU Song-biao CHEN Yong-qin WANG Ai-Jun SUN Hong-Lin XU Xiao-Li WEI Zhen ZHU Institute of Genetics and Developmental Biology the Chinese Academy of Sciences Beijing 100101 China

Herein, we report the cloning and molecular characterization of a full cDNA encoding a putative plastidic ATP/ADP transporter, designated HtAATP, for Helianthus tuberosus L. The ATP/ADP translocator protein was isolated from the tuber-cDNA library of H. tuberosus for the first time. The predicted HtAATP protein was judged as a plastidic ATP/ADP translocator protein from its high homology at the amino acid sequence level to the two Arabidopsis thaliana plastidic ATP/ADP translocator proteins AATP1 and AATP2 （84.8% and 79.9% identity, respectively）. Amino acid sequence analysis of the primary structure of HtAATP revealed that it belonged to the plastidic ATP/ADP transporter family. Hydropathy prediction indicated that HtAATP gene product is a highly hydrophobic membrane protein that contains 10 transmembrane domains to form a spanning topology. Southern blotting analysis showed that the HtAATP gene is a single-copy gene in the H. tuberosus genome. Tissue distribution analysis showed that the HtAATP gene is prominently expressed in sink tissues. A stable expression pattern in tubers at different developmental stages implies an active involvement of HtAATP during carbohydrate formation.

关键词： expression pattern Helianthus tuberosus plastidic ATP/ADP transporter.

新疆阿勒吞昆多蛇绿混杂岩的地球化学特征及形成环境

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西北地质 2013年第2期46卷 30-36页

作者：秦彪中国建筑材料工业地质勘查中心新疆总队新疆乌鲁木齐830000

该蛇绿混杂岩的岩石组合为辉长岩、斜长花岗岩及火山熔岩等,缺失变质橄榄岩、超镁铁堆晶岩和辉绿岩岩墙单元。蛇绿岩中辉长岩和基性熔岩REE球粒陨石标准化和微量元素原始地幔标准化分配型式呈近平坦型分布,轻稀土亏损或略亏损,类似于岛... 详细信息

该蛇绿混杂岩的岩石组合为辉长岩、斜长花岗岩及火山熔岩等,缺失变质橄榄岩、超镁铁堆晶岩和辉绿岩岩墙单元。蛇绿岩中辉长岩和基性熔岩REE球粒陨石标准化和微量元素原始地幔标准化分配型式呈近平坦型分布,轻稀土亏损或略亏损,类似于岛弧(IAB)和扩张脊(MORB)过渡构造背景特征,形成于SSZ型洋盆底初始岛弧的弧前扩张环境。

关键词：新疆东准噶尔阿勒吞昆多古亚洲洋蛇绿岩洋中脊

阿勒吞昆多蛇绿混杂岩斜长花岗岩锆石SHRIMP测年及时限

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西北地质 2012年第3期45卷 20-25页

作者：秦彪中国建筑材料工业地质勘查中心新疆总队新疆乌鲁木齐830000

在大量查阅分析和研究前人资料基础上,提出阿勒吞昆多蛇绿混杂岩是卡拉麦里蛇绿岩带的向东延伸部分。卡拉麦里蛇绿岩带西起卡拉麦里—塔克扎勒—大黑山至伊吾县阿勒吞昆多一带,向东可能延伸至蒙古境内。该蛇绿混杂岩中斜长花岗岩产于辉... 详细信息

在大量查阅分析和研究前人资料基础上,提出阿勒吞昆多蛇绿混杂岩是卡拉麦里蛇绿岩带的向东延伸部分。卡拉麦里蛇绿岩带西起卡拉麦里—塔克扎勒—大黑山至伊吾县阿勒吞昆多一带,向东可能延伸至蒙古境内。该蛇绿混杂岩中斜长花岗岩产于辉长岩顶部,二者呈突变或渐变接触关系。应用SHRIMP方法对斜长花岗岩进行了锆石U-Pb定年,获得了(351±6Ma)的年龄,这一年龄反映阿勒吞昆多蛇绿岩形成于早石炭世。同时,该蛇绿混杂岩上覆岩系的时代为晚石炭世,表明阿勒吞昆多蛇绿混杂岩侵位时代不晚于晚石炭世。

关键词：斜长花岗岩蛇绿混杂岩侵位时限上覆岩系

咪唑-多联吡啶钌配合物的合成、晶体结构和性能研究

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无机化学学报 2014年第10期30卷 2279-2287页

作者：覃彪傅文甫中国科学院理化技术研究所光化学转换与光电子材料重点实验室北京100190

以多联吡啶类配体取代咪唑3-位,合成了2个配体,进而得到了2个钌配合物[Ru(tpy-PhCH2-Im-Naph)2](PF6)4(C1)和[Ru(2,2′-bpy)2(2,2′-bpy-(CH2-Im-CH3)2)](PF6)4(C2)(tpy=2,2′:6′,2″-三联吡啶,bpy=2,2′-联吡啶,Im=咪唑,Naph=5,7-二甲基-1,8-萘啶),通过核磁、质谱、元素分析,紫外、荧光等对这些化合物进行了表征,经X-射线晶体衍射分析确定了配合物C1的晶体结构。结构解析表明:配合物C1是离子型化合物,沿c轴方向堆积成规律的孔洞状。电化学性质测试揭示了氧化还原是一个单电子可逆的过程,对应的可逆对为Ru(Ⅲ)/Ru(Ⅱ),E1/2分别为1.26和1.32 V。C1和C2与CO2的加合物的红外光谱测试表明,这些化合物在碱的作用下能形成碳卡宾,可与CO2结合。

关键词：氮杂环卡宾多联吡啶钌配合物晶体结构 CO2固定光谱性质

基于集成学习和反馈策略的贝叶斯网络结构学习

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计算机学报 2021年第6期44卷 1051-1063页

作者：王守会覃飙中国人民大学信息学院北京100872

为解决单一结构学习算法中普遍存在的学习效果差、易陷入局部最优等问题,本文通过引入最大信息系数MIC(Maximal Information Coefficient)和集成学习思想,提出了一种新的贝叶斯网络结构学习算法.该算法首先利用MIC确定节点间的依赖关系... 详细信息

为解决单一结构学习算法中普遍存在的学习效果差、易陷入局部最优等问题,本文通过引入最大信息系数MIC(Maximal Information Coefficient)和集成学习思想,提出了一种新的贝叶斯网络结构学习算法.该算法首先利用MIC确定节点间的依赖关系并得到初始网络,接着使用Bootstrap方法对数据样本进行采样获得若干样本集.依次使用每个样本集,在给定初始网络的基础上,通过BDe评分和禁忌搜索算法训练生成贝叶斯网络并将其用邻接矩阵表示.进而利用集成学习策略,根据得到的若干邻接矩阵计算每条边的权重,并通过设定权重阈值得到集成学习结果.根据集成学习结果利用反馈策略更新初始网络并进入下一次迭代,经过不断迭代最终得到贝叶斯网络结构.最后在7种不同大小的标准数据集中进行实验,计算F1值(F 1-score)、汉明距离HD(Hamming Distance)和学习到的正确边数(TP),并与其它算法进行对比分析.结果表明本文提出的算法在可行性、有效性和普适性上更优.

关键词：集成学习贝叶斯网络结构学习反馈策略最大信息系数

Parboiled rice supplementation alleviates high-fat diet-induced hyperlipidemia by regulating genes and gut microbiota in mice

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Food Science and Human Wellness 2024年第3期13卷 1422-1438页

作者： Xiuxiu Wu Tianyi Guo biao Li Shuai Han Zuomin Hu Yi Luo Dandan qin Yaping Zhou Feijun Luo qinlu Lin National Research Center of Rice Deep Process and Byproducts Hunan Provincial Key Laboratory of Grain-oil Deep Process and Quality ControlHunan Provincial Key Laboratory of Forestry Edible Resources Safety and ProcessingCentral South University of Forestry and TechnologyChangsha 410004China College of Life Science and Technology Central South University of Forestry and TechnologyChangsha 410004China Department of Clinical Medicine Medical College of XiangyaCentral South UniversityChangsha 410008China

Dietary parboiled rice(PR)has a low risk of disease,but little is known about the contribution of PR to the prevention of *** potential role and underlying mechanisms of PR in hyperlipidemia were evaluated in this *** C57BL/6J mice were fed with a normal diet,high-fat diet(HFD)containing refined rice(HFDRR)or PR(HFDPR).It was found that PR intervention improved lipid accumulation in *** data analysis revealed that 27 genes were up-regulated(mostly involved in lipid breakdown)and 86 genes were down-regulated(mostly involved in inflammatory responses)in the HFDPR group compared to the HFDRR *** 15 differentially expressed genes(DEGs)were validated by quantitative real-time PCR(RT-qPCR),while protein interaction network showed that protein tyrosine phosphatase receptor type C(PTPRC)has a central *** gut microbiota of mice was also altered after different dietary treatments,with higher ratio of Firmicutes and Bacteroidetes,increased abundances of Ruminococcaceae,Lachnospiraceae,Christensenellaceae,Porphyromonadaceae,Rikenellaceae and Prevotellaceae,and decreased abundances of Lactobacillaceae,Peptostreptococcaceae,Erysipelotrichaceae and Actinobacteria in the HFDRR *** addition,it was observed that PPAR signaling pathway may act as a bridge between DEGs and differential gut *** results suggested that PR can prevent hyperlipidemia by modulating liver genes and gut microbiota.

关键词： Parboiled rice Blood lipids Transcriptome Gut microbiota PPAR Signaling pathway