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Identification of banana leaf disease based on KVA and GR-ARNet

Journal of Integrative Agriculture 2024年第10期 3554-3575页

作者： Jinsheng Deng Weiqi Huang Guoxiong Zhou Yahui Hu liujun li Yanfeng Wang College of Electronic Information and Physics Central South University of Forestry and Technology Plant Protection Research Institute Hunan Academy of Agricultural Sciences Department of Soil and Water Systems College of Agricultural & Life Sciences University of Idaho College of Systems Engineering National University of Defense Technology

Banana is a significant crop, and three banana leaf diseases, including Sigatoka, Cordana and Pestalotiopsis, have the potential to have a serious impact on banana production. Existing studies are insufficient to provide a reliable method for accurately identifying banana leaf diseases. Therefore, this paper proposes a novel method to identify banana leaf diseases. First, a new algorithm called K-scale VisuShrink algorithm(KVA) is proposed to denoise banana leaf images. The proposed algorithm introduces a new decomposition scale K based on the semi-soft and middle course thresholds, the ideal threshold solution is obtained and substituted with the newly established threshold function to obtain a less noisy banana leaf image. Then, this paper proposes a novel network for image identification called Ghost ResNeSt-Attention RReLU-Swish Net(GR-ARNet) based on Resnet50. In this, the Ghost Module is implemented to improve the network's effectiveness in extracting deep feature information on banana leaf diseases and the identification speed; the ResNeSt Module adjusts the weight of each channel, increasing the ability of banana disease feature extraction and effectively reducing the error rate of similar disease identification;the model's computational speed is increased using the hybrid activation function of RReLU and Swish. Our model achieves an average accuracy of 96.98% and a precision of 89.31% applied to 13,021 images, demonstrating that the proposed method can effectively identify banana leaf diseases.

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An Effective Image-Based Tomato Leaf Disease Segmentation Method Using MC-UNet

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Plant Phenomics 2023年第2期5卷 268-284页

作者： Yubao Deng Haoran Xi Guoxiong Zhou Aibin Chen Yanfeng Wang liujun li Yahui Hu College of Computer&Information Engineering Central South University of Forestry and TechnologyChangsha410004HunanChina College of Mechanical&Electrical Engineering Central South University of Forestry and TechnologyChangsha410004HunanChina National University of Defense Technology 410015ChangshaHunanChina Department of Soil and Water Systems University of IdahoMoscowID83844USA Plant Protection Research Institute Academy of Agricultural Sciences410125ChangshaHunanChina

Tomato disease control is an urgent requirement in the field of intellectual agriculture,and one of the keys to it is quantitative identification and precise segmentation of tomato leaf *** diseased areas on tomato leaves are tiny and may go unnoticed during *** edge also makes the segmentation accuracy *** on UNet,we propose an effective image-based tomato leaf disease segmentation method called Cross-layer Attention Fusion Mechanism combined with Multi-scale Convolution Module(MC-UNet).First,a Multi-scale Convolution Module is *** module obtains multiscale information about tomato disease by employing 3 convolution kernels of different sizes,and it highlights the edge feature information of tomato disease using the Squeeze-and-Excitation ***,a Cross-layer Attention Fusion Mechanism is *** mechanism highlights tomato leaf disease locations via gating structure and fusion ***,we employ SoftPool rather than MaxPool to retain valid information on tomato ***,we use the SeLU function appropriately to avoid network neuron *** compared MC-UNet to the existing segmentation network on our self-built tomato leaf disease segmentation dataset and MC-UNet achieved 91.32%accuracy and 6.67M *** method achieves good results for tomato leaf disease segmentation,which demonstrates the effectiveness of the proposed methods.

关键词： network precise sizes

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Performance evaluation of a multi-rotor unmanned agricultural aircraft system for chemical application

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International Journal of Agricultural and Biological Engineering 2021年第4期14卷 43-52页

作者： Hang Zhu Hongze li Anderson P.Adam liujun li Lei Tian Key Laboratory of CNC Equipment Reliability Ministry of EducationSchool of Mechanical and Aerospace EngineeringJilin UniversityChangchun 130025China Department of Agricultural and Biological Engineering University of Illinois at Urbana-ChampaignUrbanaIL 61801USA

Unmanned agricultural aircraft system(UAAS)hasbeen widely employed as a low-cost and reliable method to apply agrochemicals to small agricultural fields in *** performance of battery-poweredmultirotor UAAS has attracted considerable attention from manufacturers and *** objective of this research was to design a UAAS equippingwith a data acquisition system,to characterize its chemical application performance based on droplet deposition data and optimize the operating *** test was repeated three times to assess the reliability of the spraying *** flight parameters were also *** optimal spray pressure for the XR8001 and XR8002(TeeJet,Wheaton,IL,USA)nozzles was found to be 300 kPa,and the latter nozzle had a higher droplet deposition rate and spray *** volume was not significantly affected by the flight speed or droplet density and was negatively correlated with the nozzle *** results of this study provide a basis for improving the efficiency of UAAS chemicalapplication systems in terms of large-scale application.

关键词： spray characterization unmanned agricultural aircraft system aerial sprayer onboard data acquisition system effective swath width flight parameters chemical application performance evaluation

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中国Web3.0战略发展路径浅析

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科技导报 2023年第15期41卷 61-68页

作者：李柳君鲁俊群温州商学院传媒与设计艺术学院温州325035 清华大学人工智能国际治理研究院北京100084 北京大学武汉人工智能研究院智能治理研究中心武汉430070

Web3.0是互联网发展的下一个重要阶段。中国“十四五”规划中提出要加快数字化发展,培育壮大区块链等新型产业生态,将Web3.0作为数字经济发展的重要目标。分析了Web3.0的发展和应用。探讨了中国发展Web3.0的机遇挑战、监管政策、发展路... 详细信息

Web3.0是互联网发展的下一个重要阶段。中国“十四五”规划中提出要加快数字化发展,培育壮大区块链等新型产业生态,将Web3.0作为数字经济发展的重要目标。分析了Web3.0的发展和应用。探讨了中国发展Web3.0的机遇挑战、监管政策、发展路径,并提出加强技术研发、建立统一的技术标准、改善法律法规环境、强化风险管理等发展建议。

关键词： Web3.0 区块链数字经济发展路径

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影像组学术前评估肝癌微血管侵犯的研究进展

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中华超声影像学杂志 2021年第6期30卷 548-552页

作者：李柳军苏中振中山大学附属第五医院超声科珠海519000

微血管侵犯(microvascular invasion,MVI)是肝癌术后复发的独立危险因素,术前明确诊断MVI对肝癌患者治疗方案的选择及改善预后具有重要意义。影像组学是一种新兴的影像定量分析技术,国内外学者将其应用于肝癌MVI无创性评估,显示出广阔... 详细信息

微血管侵犯(microvascular invasion,MVI)是肝癌术后复发的独立危险因素,术前明确诊断MVI对肝癌患者治疗方案的选择及改善预后具有重要意义。影像组学是一种新兴的影像定量分析技术,国内外学者将其应用于肝癌MVI无创性评估,显示出广阔的临床应用前景。本文对影像组学术前精准评估肝癌MVI进行综述。

关键词：肝细胞癌微血管侵犯影像组学

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Development of a novel critical nitrogen concentration-cumulative transpiration curve for optimizing nitrogen management under varying irrigation conditions in winter wheat

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The Crop Journal 2024年第4期12卷 1242-1251页

作者： Tianyang Ye Yu Zhang Jingyan Xuan Xintian Wang Yang li Junhao Xu liujun Xiao Leilei liu liang Tang Weixing Cao Bing liu Yan Zhu National Engineering and Technology Center for Information Agriculture Engineering Research Center of Smart AgricultureMinistry of EducationKey Laboratory for Crop System Analysis and Decision MakingMinistry of AgricultureJiangsu Key Laboratory for Information AgricultureJiangsu Collaborative Innovation Center for Modern Crop ProductionNanjing Agricultural UniversityNanjing 210095JiangsuChina Institute of Remote Sensing and Digital Agriculture Sichuan Academy of Agricultural SciencesChengdu 610066SichuanChina

Accurate nitrogen(N)nutrition diagnosis is essential for improving N use efficiency in crop *** widely used critical N(Nc)dilution curve traditionally depends solely on agronomic variables,neglecting crop water *** three-year field experiments with winter wheat,encompassing two irrigation levels(rainfed and irrigation at jointing and anthesis)and three N levels(0,180,and 270 kg ha1),this study aims to establish a novel approach for determining the Nc dilution curve based on crop cumulative transpiration(T),providing a comprehensive analysis of the interaction between N and water *** Nc curves derived from both crop dry matter(DM)and T demonstrated N concentration dilution under different conditions with different *** equation Nc=6.43T0.24 established a consistent relationship across varying irrigation *** test results indicated that the nitrogen nutrition index(NNI),calculated from this curve,effectively identifies and quantifies the two sources of N deficiency:insufficient N supply in the soil and insufficient soil water concentration leading to decreased N availability for root ***,the NNI calculated from the Nc-DM and Nc-T curves exhibited a strong negative correlation with accumulated N deficit(Nand)and a positive correlation with relative grain yield(RGY).The NNI derived from the Nc-T curve outperformed the NNI derived from the Nc-DM curve concerning its relationship with Nand and RGY,as indicated by larger R2 values and smaller *** novel Nc curve based on T serves as an effective diagnostic tool for assessing winter wheat N status,predicting grain yield,and optimizing N fertilizer management across varying irrigation *** findings would provide new insights and methods to improve the simulations of water-N interaction relationship in crop growth models.

关键词： Crop dry matter Crop cumulative transpiration Bayesian statistical model Critical nitrogen dilution curve Nitrogen nutrition index

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Aptamer-Based Cell-Surface Profiling with Single-Cell Resolution Enables Precise Cancer Characterization

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CCS Chemistry 2024年第1期6卷 196-207页

作者： liujun Xu Yawei Feng Tong Wang Shenhuan li Kangli Xu Yue Sun Yi Luo Yishan Ye Yan Miao Yun Dong Zhenzhen Guo Qing Zhang Benshang li He Huang Xue-Qiang Wang liping Qiu Weihong Tan Molecular Science and Biomedicine Laboratory State Key Laboratory of Chemo/Biosensing and ChemometricsCollege of Chemistry and Chemical EngineeringCollege of BiologyAptamer Engineering Center of Hunan ProvinceHunan UniversityChangshaHunan 410082 The Key Laboratory of Zhejiang Province for Aptamers and Theranostics Zhejiang Cancer HospitalHangzhou Institute of MedicineChinese Academy of SciencesHangzhouZhejiang 310022 Institute of Molecular Medicine Renji HospitalShanghai Jiao Tong University School of MedicineCollege of Chemistry and Chemical EngineeringShanghai Jiao Tong UniversityShanghai 200240 Bone Marrow Transplantation Center The First Affiliated HospitalSchool of MedicineZhejiang UniversityHangzhou 310003 Institute of Hematology Zhejiang UniversityHangzhou 310003 Department of Hematology and Oncology Shanghai Children’s Medical CenterShanghai Jiao Tong University School of MedicineShanghai Jiao Tong UniversityShanghai 200127

Molecular profiling of cell-surface proteins is a powerful strategy for precise cancer *** mass cytometry(MC)enables synchronous detection of over 40 cellular parameters,its full potential in disease classification is challenged by the limited types of recognition probes currently *** this work,we synthesize a panel of heavy isotopeconjugated aptamers to profile cancer-associated signatures on the surface of hematological malignancy(HM)*** on 15 molecular signatures,we performed cell-surface profiling that allowed the precise classification of 8 HM cell *** with machine-learning technology,this aptamer-based MC platform also achieved multiclass identification of HM subtypes in clinical sampleswith 100%accuracy in the training cohort and 80%accuracy in the test ***,we report an effective and practical strategy for precise cancer classification at the singlecell level,paving the way for its clinical use in the near future.

关键词： molecular profiling cancer diagnosis mass cytometry aptamers machine learning

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液化场地下埋地管道上浮反应影响因素分析

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世界地震工程 2016年第4期32卷 182-187页

作者：陈艳华李六军李冬冬杨梅华北理工大学建筑工程学院河北唐山063009 河北省地震工程研究中心河北唐山063009

液化场地下埋地管道上浮反应是管道破坏的主要原因,避免因上浮造成的管道破坏,是城市地下生命线工程建设中急需解决的问题。利用ADINA有限元分析软件,建立了液化场地下埋地管道上浮反应的管土接触-土弹簧分析模型。考虑了非液化区的管... 详细信息

液化场地下埋地管道上浮反应是管道破坏的主要原因,避免因上浮造成的管道破坏,是城市地下生命线工程建设中急需解决的问题。利用ADINA有限元分析软件,建立了液化场地下埋地管道上浮反应的管土接触-土弹簧分析模型。考虑了非液化区的管土接触作用和液化土的非线性约束作用,对埋地管道的上浮位移及轴向应力进行了分析,探讨了管道自身以及液化土的一些参数对埋地管道上浮反应的影响。结果表明:管径、液化土密度,液化区长度越大,埋深、壁厚越小,管道的变形越大,破坏越严重,并给出了几点工程建议。

关键词：场地液化埋地管道上浮反应管土相互作用土弹簧

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阳城县产业转型升级的路径探讨

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现代工业经济和信息化 2014年第22期4卷 16-19页

作者：李刘军阳城县经济和信息化局山西阳城048100

文章首先简述了阳城的基本县情和产业现状,然后通过近三年的国内生产总值(GDP)和财政收入这两个指标,详细分析了阳城县的产业结构现状,并提出了阳城当前经济发展所面临的问题和困难,指出了推进产业转型升级的客观必然性。最后,对阳城县... 详细信息

文章首先简述了阳城的基本县情和产业现状,然后通过近三年的国内生产总值(GDP)和财政收入这两个指标,详细分析了阳城县的产业结构现状,并提出了阳城当前经济发展所面临的问题和困难,指出了推进产业转型升级的客观必然性。最后,对阳城县的产业转型升级的方向和路径分六大产业进行了具体分析和探讨,提出了基本发展思路。

关键词：县域经济产业结构产业转型发展思路

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中药内服联合米索前列醇预防产后出血临床效果

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辽宁中医药大学学报 2014年第9期16卷 164-166页

作者：李柳君河北省永年县第一医院河北永年057151

目的:观察用中药内服联合米索前列醇预防产后出血患者的临床效果。方法:选择2011年4月—2013年10月于我院就诊的有产后出血高危因素的住院产妇97例,随机分为对照组47例和治疗组50例。对照组孕妇于胎儿分娩出后立即口服米索前列醇400μg... 详细信息

目的:观察用中药内服联合米索前列醇预防产后出血患者的临床效果。方法:选择2011年4月—2013年10月于我院就诊的有产后出血高危因素的住院产妇97例,随机分为对照组47例和治疗组50例。对照组孕妇于胎儿分娩出后立即口服米索前列醇400μg预防治疗,治疗组孕妇分娩后在口服米索前列醇的基础上联合给予益气化瘀止血中药汤剂内服治疗,1剂/d,连用3剂。观察两组产妇于产后0.5 h、2 h及24 h的出血量,观察两组产妇红细胞比容Hct及血红蛋白Hb的变化情况,观察两组产妇用药后的副作用的发生情况。结果:治疗组产妇于0.5 h、2 h及24 h的出血量均明显少于对照组,两组比较其差异有统计学意义(P<0.05);治疗组产妇细胞比容、血红蛋白的下降幅度较对照组明显减小,两组比较其差异有统计学意义(P<0.05);治疗组患者的不良反应发生率明显少于对照组,两组比较其差异有统计学意义(P<0.05)。结论:本研究所用内服中药汤剂益气活血止血汤,功可固本培元、活血止血,该方组方严谨,谨守产妇产后"多虚多瘀"的病机特点,将其与米索前列醇联合应用,能协同预防产妇产后出血,安全有效,凸显出中西医结合论治的优势与特色,效果明显,值得临床广泛运用。

关键词：益气化瘀米索前列醇产后出血中西医结合临床研究

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