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DFF-ResNet: An Insect Pest Recognition Model Based on Residual Networks

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Big Data Mining and Analytics 2020年第4期3卷 300-310页

作者： wenjie liu Guoqing Wu Fuji Ren Xin Kang the School of Information Science and Technology and School of Transportation and Civil Engineering Nantong UniversityNantong 226019China the Faculty of Engineering Tokushima UniversityTokushima 770-8506Japan the School of Information Science and Technology Nantong UniversityNantong 226019China

Insect pest control is considered as a significant factor in the yield of commercial ***,to avoid economic losses,we need a valid method for insect pest *** this paper,we proposed a feature fusion residual block to perform the insect pest recognition *** on the original residual block,we fused the feature from a previous layer between two 11 convolution layers in a residual signal branch to improve the capacity of the ***,we explored the contribution of each residual group to the model *** found that adding the residual blocks of earlier residual groups promotes the model performance significantly,which improves the capacity of generalization of the *** stacking the feature fusion residual block,we constructed the Deep Feature Fusion Residual Network(DFF-ResNet).To prove the validity and adaptivity of our approach,we constructed it with two common residual networks(Pre-ResNet and Wide Residual Network(WRN))and validated these models on the Canadian Institute For Advanced Research(CIFAR)and Street View House Number(SVHN)benchmark *** experimental results indicate that our models have a lower test error than those of baseline ***,we applied our models to recognize insect pests and obtained validity on the IP102 benchmark *** experimental results show that our models outperform the original ResNet and other state-of-the-art methods.

关键词： insect pest recognition deep feature fusion residual network image classification

Energy evolution and water immersion‑induced weakening in sandstone roof of coal mines

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International Journal of Coal Science & Technology 2022年第4期9卷 93-106页

作者： wenjie liu Ke Yang Shuai Zhang Zhainan Zhang Rijie Xu State Key Laboratory of Mining Response and Disaster Prevention and Control in Deep Coal Mines Anhui University of Science and TechnologyHuainan 232001China Hefei Comprehensive National Science Center Institute of EnergyHefei 230031AnhuiChina National and Local Joint Engineering Research Center of Precision Coal Mining Anhui University of Science and TechnologyHuainan 232001AnhuiChina Key Laboratory of Mining Coal Safety and Efciently Constructed By Anhui Province and Ministry of Education Anhui University of Science and TechnologyHuainan 232001China State Key Laboratory of Coal Resources and Safe Mining China University of Mining and TechnologyXuzhou 221116JiangsuChina

The instability of underground spaces in abandoned coal mines with water-immersed rocks is one of the main hazards hindering the geothermal energy use and ecological restoration of post-mining *** study conducted graded cyclic loading–unloading tests of fve groups of sandstone samples with diferent water *** evolution of input,elastic,dissipated,damping,and plastic energies were explored,considering the damping *** normalized plastic energy serves to characterize the damage evolution of sandstone samples,whose failure characteristics were analyzed from both the macroscopic and microscopic perspectives.X-ray difraction technique and scanning electron microscopy were used to reveal the softening mechanism of *** results show that under graded cyclic loading,input energy,elastic energy,and dissipated energy all increase gradually,and the fraction of elastic energy increases gradually at frst and then tends to *** variation in the fraction of dissipated energy is opposite to that of elastic *** each cycle,the input energy is stored primarily in the form of elastic energy,whereas the dissipated energy is used primarily to overcome the damping of *** the normalized number of cycles approached unity,the plastic energy fraction sharply increases,while that of the dampening energy drops *** increasing water content,the efect of pore water on the lubrication,the water wedge,and dissolution of mineral particles becomes more obvious,reducing the elastic-storage limit of sandstone,meanwhile the sandstone damage factor increases signifcantly under the same cycle and the failure mode changes from brittle to ductile.

关键词： Mining engineering Energy evolution Water-rock interaction Weakening mechanism

Distributed data-driven consensus control of multi-agent systems under switched uncertainties

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Control Theory and Technology 2023年第3期21卷 478-487页

作者： wenjie liu Yifei Li Gang Wang Jian Sun Jie Chen National Key Lab of Autonomous Intelligent Unmanned Systems Beijing Institute of TechnologyBeijing 100081China Beijing Institute of Technology Chongqing Innovation Center Chongqing 401120China Department of Control Science and Engineering Tongji UniversityShanghai 201804China

Cooperative control of multi-agent systems(MASs),particularly consensus control,has gained significant attention in the last two decades,thanks to the rapid and sustained development of distributed and networked *** this paper,we present some new results focused on consensus control of a set of unknown linear MASs(whose system matrices are unknown)under unknown switched uncertainties,with an emphasis on distributed data-driven *** proposed controller is end-to-end,designed by solving two data-based semi-definite programs(SDPs),which adjust to the changes of the uncertainty *** approach achieves asymptotic consensus of the MAS provided that the switching is slow enough and the uncertainty is *** illustrate the effectiveness of our proposed method through a numerical example.

关键词： Data-driven control Multi-agent systems Consensus-Switched uncertainties

Concentrations and source identification of organochlorine pesticides (OCPs) in soils from Wolong Natural Reserve

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Chinese Science Bulletin 2009年第5期54卷 743-751页

作者： ZHENG XiaoYan liu XianDe liu wenjie JIANG GuiBin YANG RuiQiang State Key Laboratory of Environmental Chemistry and Ecotoxicology Research Center for Eco-Environmental Sciences Chinese Academy of Sciences Beijing 100085 China Chinese Research Academy of Environmental Sciences Beijing 100012 China

In order to understand the distribution profile, composition characteristics and sources of OCPs, soil samples collected from Wolong Natural Reserve (WNR) in spring and autumn in 2005 were analyzed using gas chromatography coupled with electron capture detector (GC-ECD). Results showed that all OCPs concentrations were in the range of 10?2 ng/g―10?1 ng/g, representing the background level in those remote sites. Generally, their concentrations were slightly higher in spring than in autumn, which could be explained by OCPs: 1) may be released to soil from snow-melting water in spring; 2) partially evaporate into air from soil due to high temperature and intense radiation in summer and 3) can be relatively high degradation rate in summer. There were notable differences of OCPs seasonal variations between samples from alpine meadow and those from under-treeline. This phenomenon was related to physical-chemical properties of OCPs and vegetation coverage. For alpine meadow soils, levels of OCPs were increased with increasing altitudinal gradient, which was associated with enhanced scav-enging efficiency of wet precipitation. Composition characteristics of OCPs in soils were similar to those of air samples, which was distinct from those of typical contaminated soils, indicating that OCPs in WNR soils were mainly from atmospheric transport.

关键词：有机氯杀虫剂土壤污染组成特性季节性变化来源鉴定

The Eyes Have It:Perception of Social Interaction Unfolds Through Pupil Dilation

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Neuroscience Bulletin 2021年第11期37卷 1595-1598页

作者： Yuhui Cheng wenjie liu Xiangyong Yuan Yi Jiang State Key Laboratory of Brain and Cognitive Science CAS Center for Excellence in Brain Science and Intelligence TechnologyInstitute of PsychologyChinese Academy of SciencesBeijing100101China Department of Psychology University of Chinese Academy of SciencesBeijing100049China Chinese Institute for Brain Research Beijing102206China Institute of Artificial Intelligence Hefei Comprehensive National Science CenterHefei230088China

Dear Editor,It is well-known that pupil size,albeit intrinsically sensitive to ambient luminance changes,can be nlodulated by many cognitive processes,especially those associated with physiological arousal[1].Compatib... 详细信息

关键词： ambient Compatible intrinsic

A new fragments allocating method for join query in distributed database

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Frontiers of Computer Science 2020年第4期14卷 215-217页

作者： Jintao GAO Zhanhuai LI wenjie liu Zhijun GUO Yantao YUE School of Computer Science Northwestern Polytechnical UniversityXi’an710072China Bank of Communications Shanghai201201China

1 Introduction In distributed systems,the performance of join query(mainly about one dimension join query)is one of the most necessary to be improved[1].Unlike traditional centralized database systems storing data locally,under distributed environment,data is partitioned into multiple blocks stored at separate physical *** improving the performance of join query,sometimes,we need to maximize local execution of query plan to mitigate expensive network *** various data layouts and various combinations of operators,it is rarely possible to find local executing places for the whole plan.

关键词： locating operators partitioned

Cluster mean-field study of spinor Bose-Hubbard ladder:Ground-state phase diagram and many-body population dynamics

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Chinese Physics B 2021年第2期30卷 95-102页

作者： Li Zhang wenjie liu Jiahao Huang Chaohong Lee Guangdong Provincial Key Laboratory of Quantum Metrology and Sensing&School of Physics and Astronomy Sun Yat-Sen University(Zhuhai Campus)Zhuhai 519082China State Key Laboratory of Optoelectronic Materials and Technologies Sun Yat-Sen University(Guangzhou Campus)Guangzhou 510275China

We present a cluster mean-field study for ground-state phase diagram and many-body dynamics of spin-1 bosons confined in a two-chain Bose-Hubbard ladder(BHL).For unbiased BHL,we find superfluid(SF)phase and integer filling Mott insulator(Int MI)*** biased BHL,in addition to the SF and Int MI phases,there appears half-integer filling Mott insulator(HInt MI)*** phase transition between the SF and Int MI phases can be first order at a part of phase boundaries,while the phase transition between the SF and HInt MI phases is always second *** tuning the bias energy,we report on the change of the nature of SF-MI phase ***,we study the effect of the spin-dependent interaction on the many-body population *** spin-dependent interaction can lead to rich dynamical behaviors,but does not influence the particle transfer *** results indicate a way to tune the nature of the SF-MI phase transition and open a new avenue to study the many-body dynamics of spinor bosons in optical lattices.

关键词： spinor Bose gases superfluid-Mott insulator phase transition Landau-Zener dynamics

Rodent Ecology and Etiological Investigation in China:Results from Vector Biology Surveillance—Shandong Province,China,2012–2022

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China CDC weekly 2024年第36期6卷 911-917,I0001-I0003页

作者： Qintong Sun Yan liu Yingnan Han wenjie liu Xinyue Cao Binghui Li Xuejun Wang Institute of Disinfection&Disease Vector Control Shandong Center for Disease Control and PreventionShandong Academy of Preventive MedicineJinan CityShandong ProvinceChina Institute of Disinfection and Vector Control Qingdao Center for Disease Control and PreventionQingdao Institute of Preventive MedicineQingdao CityShandong ProvinceChina.

Introduction:Rodents are hosts of a wide range of zoonotic disease pathogens which threaten human ***,comprehensive investigations of rodent ecology and etiology in Shandong are ***,we aimed to analyze rodent ecology and infection with relevant pathogens in Shandong Province,***:Rodent survey data collected from 2012 to 2022 in Shandong Province were used in this *** captured from 2020 to 2022 were identified to species and tested for ***:From 2012 to 2022,4,145 rodents were captured,with an average capture rate of 0.70%.High capture rates were observed in rural residential areas and other habitats,such as farmland and *** norvegicus(***)was the dominant species,followed by Mus musculus(***).The regions with the highest capture rates of *** were Dongying(0.82%)and Heze(0.63%),while *** was more prevalent in Dongying(0.81%)and Weihai(0.56%).Rodent capture rates were highest between March and *** positive detection rates of Hantavirus(HV),Leptospira interrogans(***),Rickettsia typhi(***),Anaplasma phagocytophilum(***),and Francisella tularensis(***)in rodents were 2.58%,1.10%,0.94%,0.16%,and 0.19%,***:The rodent capture rate in human habitation environments has trended downward in Shandong Province,with *** and *** being the dominant *** infection risk from HV,***,and *** showed seasonal *** rodent surveillance and maintaining a low capture rate of host animals could be pivotal for preventing and controlling relevant rodent-borne diseases in high-risk areas.

关键词： Shandong farmland habitat

Ce-Ti catalysts modified with copper and vanadium to effectively remove slip NH_(3) and NO_x from coal-fired plants

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Journal of Rare Earths 2023年第7期41卷 1022-1030,I0002页

作者： wenjie liu Yifei Long Shinian liu Yongyan Zhou Xin Tong Yajie Yin Xiaoyi Li Kang Hu Jiangjun Hu School of Resource and Environmental Sciences Wuhan UniversityWuhan 430079China China Southern Power Grid Technology Co. Ltd.Guangzhou 510080China Electric Power Research Institute of Guangdong Power Grid Co.Ltd. Guangzhou 510080China

In this work,V/Ce-Ti catalysts were modified with different kinds of transition metals(Cu,Fe,Co,Mn) by sol-gel and impregnation *** NH_(3) oxidation performance of them was tested to select the most active catalyst in NH_(3)-selective catalytic oxidation(NH_(3)-SCO).The effect of NO,SO_(2) and H_(2)O was also *** experimental results indicate that 1% Cu-V/Ce-Ti catalyst exhibits the most significant ability to remove slip ammonia discharged from coal-fired plants and its NH_(3) conversion efficiency reaches90% at 300℃.In additio n,97% NO_x can be removed when NO is introduced in the ***-V/Ce-Ti catalyst also obtains good resistance to H_(2)O and SO_(2).Based on the characterization experiment,the introduced Cu and V are highly dispersed on Ce-Ti catalyst and they can increase the redox properties and the number of acidic ***,the redox cycles among Cu,V and Ce species on Cu-V/Ce-Ti catalyst surface are conducive to generating more active oxygen and promoting the oxidation capacity of the catalyst.

关键词： Ce-Ti catalyst Transition metals Slip ammonia NO reduction Rare earths