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Image Generation of Tomato Leaf Disease Identification Based on Small-ACGAN

Computers, Materials & Continua 2023年第7期76卷 175-194页

作者： Huaxin Zhou ziying Fang Yilin Wang Mengjun Tong School of Mathematics and Computer Science Zhejiang A&F UniversityHangzhou311300China Zhejiang Provincial Key Laboratory of Forestry Intelligent Monitoring and Information Technology Research Hangzhou311300China School of Humanities and Law Zhejiang A&F UniversityHangzhou311300China Department of Computer Science and Engineering Lehigh UniversityPA18015USA

Plant diseases have become a challenging threat in the agricultural *** learning approaches for plant disease detection and classification have been adopted to detect and diagnose these diseases ***,deep learning entails extensive data for training,and it may be challenging to collect plant *** though plant datasets can be collected,they may be uneven in *** a result,the problem of classification model overfitting *** study targets this issue and proposes an auxiliary classifier GAN(small-ACGAN)model based on a small number of datasets to extend the available ***,after comparing various attention mechanisms,this paper chose to add the lightweight Coordinate Attention(CA)to the generator module of Auxiliary Classifier GANs(ACGAN)to improve the image ***,a gradient penalty mechanism was added to the loss function to improve the training stability of the *** show that the proposed method can best improve the recognition accuracy of the classifier with the doubled *** AlexNet,the accuracy was increased by 11.2%.In addition,small-ACGAN outperformed the other three GANs used in the ***,the experimental accuracy,precision,recall,and F1 scores of the five convolutional neural network(CNN)classifiers on the enhanced dataset improved by an average of 3.74%,3.48%,3.74%,and 3.80%compared to the original ***,the accuracy of MobileNetV3 reached 97.9%,which fully demonstrated the feasibility of this *** general experimental results indicate that the method proposed in this paper provides a new dataset expansion method for effectively improving the identification accuracy and can play an essential role in expanding the dataset of the sparse number of plant diseases.

关键词： Deep learning ACGAN CA gradient penalty tomato diseases identification

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PRiME HLB固相萃取结合UPLC-QTOF-MS测定烟液与烟丝中的依托咪酯

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分析仪器 2024年第5期 25-30页

作者：王华罗达龙覃蓝莫惠欣李媛捷何姗珊杨梓莹刘虹虹梧州市食品药品检验所梧州543000

待测样品经乙腈提取后,使用PRi ME HLB固相萃取柱对样品提取液进行净化,经ACE EXCEL C18(2.1mm×50mm,2μm)色谱柱分离,以甲醇-5mmol·L^(-1)甲酸铵水溶液(含0.1%甲酸)作为流动相,梯度洗脱,采用电喷雾离子源正模式(ESI+),目标物二级离... 详细信息

待测样品经乙腈提取后,使用PRi ME HLB固相萃取柱对样品提取液进行净化,经ACE EXCEL C18(2.1mm×50mm,2μm)色谱柱分离,以甲醇-5mmol·L^(-1)甲酸铵水溶液(含0.1%甲酸)作为流动相,梯度洗脱,采用电喷雾离子源正模式(ESI+),目标物二级离子模式(Targeted MS/MS)进行质谱分析。依托咪酯在2ng·m L^(-1)~200ng·m L^(-1)浓度范围内线性关系良好,相关系数r为0.999,在0.2μg·g^(-1),1.0μg·g^(-1),5.0μg·g^(-1)3个水平的加标回收率为86.6%~94.6%,RSD为3.1%~4.3%(n=9)。本方法具有操作简易快速、定性定量准确等特点。

关键词：依托咪酯四极杆飞行时间质谱电子烟 PRiME HLB固相萃取

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Some properties of field-aligned electron events in high-altitude polar regions

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Science China Earth Sciences 2016年第2期59卷 436-444页

作者： ZHANG ziying SHI JianKui ZHOU MingQuan CHENG ZhengWei ZHOU Hua College of Information Science and Technology Beijing Normal University Beijing 100875 China State Key Laboratory of Space Weather National Space Science Center Beijing 100190 China College of Applied Arts and Science of Beijing Union University Beijing 100191 China

Using data from the Cluster spacecraft from January 2003 to December 2004, we perform a statistical study on some properties of the field-aligned electron(FAE) events and interplanetary magnetic field(IMF) By dependence of FAE events with different durations in high-altitude polar regions. A total of 1335 FAE events were observed by the C3 spacecraft. More down-flowing events were observed in the Southern Hemisphere, and more up-flowing events were observed in the Northern Hemisphere. It proves that down-flowing events mainly originate from magnetosphere or solar wind and up-flowing events are mainly derived from ionosphere. Short-lifetime events showed a morning concentration in the magnetic local time distribution, and long-lifetime events were concentrated both before and after noon. For the IMF By dependence of the FAE events, short-lifetime events were much affected by IMF By and resulted in a morning concentration, while the long-lifetime events were almost unaffected by IMF By. With further analysis, we determined that the short-lifetime and long-lifetime events had different sources.

关键词： Field-aligned electron IMF By High-altitude polar region

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Reductive amination of n-hexanol to n-hexylamine over Ni-Ce/γ-Al_(2)O_(3) catalysts

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Frontiers of Chemical Science and Engineering 2023年第1期17卷 82-92页

作者： Pengfei Li Huijiang Huang Zheng Wang ziying Hong Yan Xu Yujun Zhao School of Chemical Engineering and Technology Tianjin UniversityKey Laboratory for Green Chemical Technology of Ministry of EducationTianjin 300072China

The amination of alkyl alcohols is one of the most promising paths in synthesis of aliphatic ***,cerium doped nickel-based catalysts were synthesized and tested in a gas-phase amination of n-hexanol to *** was found that the activity of the Ni/γ-Al_(2)O_(3)catalyst is significantly improved by doping an appropriate amount of *** presence of cerium effectively inhibits the agglomeration of nickel particle,resulting in better Ni *** Ni particle size plays critical role on the catalytic activity,higher turnover frequency of n-hexanol amination was *** doping also improves the reduction ability of nickel and enhances the interactions between Ni and the catalyst *** weak acid sites were also found in those cerium doped catalysts,which promote another key step—ammonia dissociative adsorption in this reaction *** overall synergy of Ni nanoparticles and acid sites of this Ni-Ce/γ-Al_(2)O_(3)catalyst boosts its superior catalytic performance in the amination of n-hexanol.

关键词： amination alcohol cerium nickel acidity interaction

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Solution to the quadratic assignment problem usingsemi-Lagrangian relaxation

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Journal of Systems Engineering and Electronics 2016年第5期27卷 1063-1072页

作者： huizhen zhang cesar beltran-royo bo wang liang ma ziying zhang school of management university of shanghai for science and technologyShanghai 200093China department of statistics and operations research rey juan carlos universityMostoles(Madrid)28933Spain school of materials engineering shanghai university of engineering scienceShanghai 201620China

The semi-Lagrangian relaxation （SLR）, a new exactmethod for combinatorial optimization problems with equality constraints,is applied to the quadratic assignment problem （QAP）.A dual ascent algorithm with finite convergence is developed forsolving the semi-Lagrangian dual problem associated to the *** perform computational experiments on 30 moderately difficultQAP instances by using the mixed integer programming solvers,Cplex, and SLR＋Cplex, respectively. The numerical results notonly further illustrate that the SLR and the developed dual ascentalgorithm can be used to solve the QAP reasonably, but also disclosean interesting fact： comparing with solving the unreducedproblem, the reduced oracle problem cannot be always effectivelysolved by using Cplex in terms of the CPU time.

关键词： quadratic assignment problem (QAP) semi-Lagrangian relaxation (SLR) Lagrangian relaxation dual ascentalgorithm.

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Developing allometric equations to estimate forest biomass for tree species categories based on phylogenetic relationships

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Forest Ecosystems 2023年第4期10卷 494-503页

作者： Mingxia yang Xiaolu Zhou Changhui Peng Tong Li Kexin Chen Zelin Liu Peng Li Cicheng Zhang Jiayi Tang ziying Zou School of Geographic Sciences Hunan Normal UniversityChangsha410081China Institute of Environment Sciences Department of Biology SciencesUniversity of Quebec at MontrealCase Postale 8888Succursale Centre-VilleMontrealQuebecH3C 3P8Canada

The development of allometric biomass models is important process in biomass estimation because the reliability of forest biomass and carbon estimations largely depends on the accuracy and precision of such *** Forest Inventories(NFI)are detailed assessments of forest resources at national and regional levels that provide valuable data for forest biomass ***,the lack of biomass allometric equations for each tree species in the NFI currently hampers the estimation of national-scale forest *** main objective of this study was to develop allometric biomass regression equations for each tree species in the NFI of China based on limited biomass *** equations optimally grouped NFI and biomass observation species according to their phylogenetic *** phylogenetic signals demonstrated phylogenetic conservation of the crown-to-stem biomass *** on phylogenetic relationships,we grouped and matched NFI and biomass observation species into 22 *** biomass regression models were developed for each of these 22 species categories,and the models performed successfully(R^(2)=0.97,root mean square error(RMSE)=12.9t·ha^(–1),relative RMSE=11.5%).Furthermore,we found that phylogeny-based models performed more effectively than wood density-based *** results suggest that grouping species based on their phylogenetic relationships is a reliable approach for the development and selection of accurate allometric equations.

关键词： Allometric equation Forest biomass National Forest Inventory Species grouping Tree architecture Wood density

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Fiscal Transfer, Education Investment and Long-Term Educational Performance

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China Finance and Economic Review 2022年第2期11卷 68-84页

作者： Yueguang Gao ziying Fan School of Public Finance and Taxation Southwest University of Finance and Economics School of Public Economics and Administration Shanghai University of Finance and Economics

Reasonable allocation of educational powers and expenditure responsibilities between central and local government is crucial to the development of *** reason lies in the fact that local governments have relatively insufficient incentives to invest in education by using local fiscal revenues,while the central government,which pursues the maximization of the interests of the whole society,could promote education and other public services with spatial *** fiscal transfer payment has made up for the shortage of local investment in *** paper uses 2010 census(micro data)and macro fiscal data to verify the effects *** on the year of birth and place,this paper constructs the proportion of fiscal transfers for compulsory education in the total fiscal revenue(local fiscal revenue and fiscal transfers)to reflect its structural *** is found that every 10%increase in the proportion of fiscal transfers brings at least additional 0.2 year of schoolings for local residents,and the effect of special transfer payments accounts for a larger share,among the three types of transfer *** the mechanism test,we find that transfer payment can effectively increase local education expenditure and produce an obvious structural *** on this,in order to further improve the long-term educational performance of individuals,we believe that it is necessary to improve the incentive effect of the transfer payment system on common power and the division of expenditure responsibilities in the field of education.

关键词： fiscal transfer local fiscal revenue educational performance

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Synchronization transition of a modular neural network containing subnetworks of different scales

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Frontiers of Information Technology & Electronic Engineering 2023年第10期24卷 1458-1470页

作者： Weifang HUANG Lijian yang Xuan ZHAN ziying FU Ya JIA College of Physics Science and Technology Central China Normal UniversityWuhan 430079China School of Life Sciences Central China Normal UniversityWuhan 430079China

Time delay and coupling strength are important factors that affect the synchronization of neural *** this study,a modular neural network containing subnetworks of different scales was constructed using the Hodgkin–Huxley(HH)neural model;i.e.,a small-scale random network was unidirectionally connected to a large-scale small-world network through chemical *** delays were found to induce multiple synchronization transitions in the *** increase in coupling strength also promoted synchronization of the network when the time delay was an integer multiple of the firing period of a single *** that time delays at different locations in a modular network may have different effects,we explored the influence of time delays within each subnetwork and between two subnetworks on the synchronization of modular *** found that when the subnetworks were well synchronized internally,an increase in the time delay within both subnetworks induced multiple synchronization transitions of their *** addition,the synchronization state of the small-scale network affected the synchronization of the large-scale *** was surprising to find that an increase in the time delay between the two subnetworks caused the synchronization factor of the modular network to vary periodically,but it had essentially no effect on the synchronization within the receiving *** analyzing the phase difference between the two subnetworks,we found that the mechanism of the periodic variation of the synchronization factor of the modular network was the periodic variation of the phase ***,the generality of the results was demonstrated by investigating modular networks at different scales.

关键词： Hodgkin-Huxley neuron Modular neural network Subnetwork Synchronization Transmission delay

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Structural form-finding of bending components in buildings by using parametric tools and principal stress lines

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Frontiers of Architectural Research 2022年第3期11卷 561-573页

作者： Zhenya Yu Hang Dai ziying Shi Department of Landscape Architecture School of ArchitectureSoutheast UniversityNanjing 210096China

This paper aims to provide an efficient and straightforward structural form-finding method for designers to extrapolate component forms during the conceptual *** core idea is to optimize the classical method of structural form-finding based on principal stress lines by using parametric *** traditional operating process of this method relies excessively on the designer’s engineering experience and lacks ***,the current optimization work for this method is overly complicated for architects,and limitations in component type and final result ***,to facilitate an architect’s conceptual work,the optimization metrics of the method in this paper are set as simplicity,practicality,freedom,and rapid *** that reason,this paper optimizes the method from three aspects:modeling strategy for continuum structures,classification processing of data by using the k-nearest neighbor algorithm,and topological form-finding process based on stress ***,it allows architects to create structural texture with formal aesthetics and modify it in real time on the basis of structural analysis *** paper also explores a comprehensive application strategy with internal force analysis diagramming to *** finite element analysis tool Karamba3D verifies the structural performance of the form-finding *** performance is compared with that of the conventional form,and the comparison results show the practicality and potential of the strategy in this paper.

关键词： Parametric design Structural formfinding Principal stress lines Classification algorithm KNN Internal force analysis Bending components

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Linear and quadratic damping coefficients of a single module of a very large floating structure over variable bathymetry:Physical and numerical free-decay experiments

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Journal of Ocean Engineering and Science 2022年第6期7卷 607-618页

作者： Yiting Wang ziying Tang Lei Wang Xuefeng Wang State Key Laboratory of Ocean Engineering Shanghai Jiao Tong UniversityShanghai 200240China SJTU-Sanya Yazhou Bay Institute of Deepsea Science and Technology Sanya 572024China

The linearity assumption is widely used when acquiring the hydrodynamic coefficients of a floating ***,the linear damping is frequently underestimated,especially for the natural *** investigate the sloping seafloor effects on the damping terms of a single module of a semi-submersible Very Large Floating Structure(VLFS),this paper revisits the conventional formulation and further proposes the direct integration method for obtaining the linear and quadratic damping coefficients from free-decay *** free-decay simulations of the single module over variable bathymetry are carried out by the CFD numerical *** model tests are also implemented to verify and validate against the numerical *** effects of the sloping seafloor,as well as the water depth,on the hydrodynamic coefficients are investigated based on the validated CFD *** numerical and experimental results indicate that the acquisition of the linear and quadratic damping coefficients is sensitive to the data-processing and identification *** the case studied in present paper,the identification errors introduced by the conventional method are 1.5%while they are 0.5%using the direct integration *** quadratic damping coefficient for heave mode decreases about 10.4%when the sloping angle increases from 0 to 6 deg.

关键词： Quadratic damping coefficient Very large floating structure Model tests Numerical simulations

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