|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Janus(BNNS/ANF)-(AgNWs/ANF)thermal conductivity composite films with superior electromagnetic interference shielding and Joule heating performances显示文摘Highly thermal conductivity materials with excellent electromagnetic interference shielding and Joule heating performances are ideal for thermal management in the next generation of communication industry,artificial intelligence and wearable electronics.In this work,silver nanowires(AgNWs)are prepared using silver nitrate as the silver source and ethylene glycol as the solvent and reducing agent,and boron nitride(BN)is performed to prepare BN nanosheets(BNNS)with the help of isopropyl alcohol and ultrasonication-assisted peeling method,which are compounded with aramid nanofibers(ANF)prepared by chemical dissociation,respectively,and the(BNNS/ANF)-(AgNWs/ANF)thermal conductivity and electromagnetic interference shielding composite films with Janus structures are prepared by the'vacuum-assisted filtration and hot-pressing'method.Janus(BNNS/ANF)-(AgNWs/ANF)composite films exhibit'one side insulating,one side conducting'performance,the surface resistivity of the BNNS/ANF surface is 4.7×10^(13) Ω,while the conductivity of the AgNWs/ANF surface is 5,275 S/cm.And Janus(BNNS/ANF)-(AgNWs/ANF)composite film with thickness of 95 pm has a high in-plane thermal conductivity coefficient of 8.12 W/(m·K)and superior electromagnetic interference shielding effectiveness of 70 dB.The obtained composite film also has excellent tensile strength of 122.9 MPa and tensile modulus and 2.7 GPa.It also has good temperature-voltage response characteristics(high Joule heating temperature at low supply voltage(5 V,215.0℃),fast response time(10 s)),excellent electrical stability and reliability(stable and constant real-time relative resistance under up to 300 cycles and 1,500 s of tensile-bending fatigue work tests). | Yixin Han Kunpeng Ruan Junwei Gu | 2022 | Nano Research2022，15，5： | 20 |
| 2 | Quantitative prediction of mining subsidence and its impact on the environment显示文摘This study is focused on the prediction of mining subsidence and its impact on the environment in the Hongqi mining area. The study was carried out by means of a probability integral model based, in first instance based on field surveys and the analysis of data collected from this area. Isolines of mining subsidence were then drawn and the impact caused by mining subsidence on the environment was analyzed quantitatively by spatial analysis with Geographic Information System (GIS). The results indicate that the subsidence area of the first working-mine can be as large as 2.54 km 2 , the maximum subsidence is 3440 mm which will cause 1524 houses to be relocated. The entire subsidence area of the mine can reach 8.09 km 2 , with a maximum subsidence of 3590 mm. Under these circumstances the value of the loss of ecosystem services will reach 5.371 million Yuan and the cost of relocating buildings will increase to 6.858 million Yuan. | Jianjun Song Chunjian Han Ping Li Junwei Zhang Deyuan Liu Minde Jiang Lin Zheng Jingkai Zhang Jianying Song | 2012 | International Journal of Mining Science and Technology2012，22，1： | 13 |
| 3 | SPACECRAFT DOCKING SIMULATION USING HARDWARE-IN-THE-LOOP SIMULATOR WITH STEWART PLATFORM显示文摘A ground-based hardware-in-the-loop (HIL) simulation system with hydraulically drivenStewart platform for spacecraft docking simulation is presented. The system is used for simulatingdocking process of the on-orbit spacecraft. Principle and structure of the six-degree-of-freedom simu-lation system are introduced. The docking process dynamic of the vehicles is modeled. Experimentresults and mathematical simulation data are compared to validating the simulation system. The com-parisons of the results prove that the simulation system proposed can effectively simulate the on-orbitdocking process of the spacecraft. | Huang Qitao Jiang Hongzhou Zhang Shangying Han Junwei | 2005 | Chinese Journal of Mechanical Engineering2005，18，3： | 12 |
| 4 | Hierarchical design of FeCo-based microchains for enhanced microwave absorption in C band显示文摘Microwave absorbing materials(MAMs)has been intensively investigated in order to meet the requirement of electromagnetic radiation control,especially in S and C band.In this work,FeCo-based magnetic MAMs are hydrothermally synthesized via a magnetic-field-induced process.The composition and morphology of the MAMs are capable of being adjusted simultaneously by the atomic ratio of Fe2+to Co2+in the precursor.The hierarchical magnetic microchain,which has a core–shell structure of twodimensional FexCo1−xOOH nanosheets anchored vertically on the surface of a one-dimensional(1D)Co microchain,shows significantly enhanced microwave absorption in C band,resulting in a reflection loss(RL)of lower than−20 dB at frequencies ranging from 4.4 to 8.0 GHz under a suitable matching thickness.The magnetic coupling of Co microcrystals and the double-loss mechanisms out of the core-shell structure are considered to promote the microwave attenuation capability.The hierarchical design of 1D magnetic MAMs provides a feasible strategy to solve the electromagnetic pollution in C band. | Yixuan Han Mukun He Jinwen Hu Panbo Liu Zhongwu Liu Zhonglei Ma Wenbo Ju Junwei Gu | 2023 | Nano Research2023，16，1： | 12 |
| 5 | Adaptive inverse control of random vibration based on the filtered-X LMS algorithm显示文摘随机的颤动控制针对复制力量光谱在指定控制的密度(PSD ) 指。古典频率光谱均等算法需要计算多重频率反应函数(FRF ) 的一般水准,它变长在均等进程的控制循环时间。同样,反馈控制算法让很慢的集中由于反馈获得参数的小价值评价保证系统的稳定性。克服这些限制,随机的颤动的适应反的控制基于 filtered-X 最不吝啬平方(LMS ) 算法被建议。根据描述和频率领域的随机的颤动测试的重复特征,而且,频率领域 LMS 算法被采用精制 FRF 的反的特征而不是传统的时间领域 LMS 算法。这个反的特征,在控制下面被称为系统的阻抗函数,被用来直接更新驱动器 PSD。测试结果显示除了成功地避免发生在重复过程期间的不稳定性问题,适应控制策略最小化需要获得一个短控制环并且完成均等的时间的数量。关键词随机的颤动 - 力量光谱密度 - 频率反应功能 - 适应反的控制 - filtered-X LMS 算法旁边支持了:不在资助下面在大学里为新世纪优秀才能编程序。 | Yang Zhidong,Huang Qitao~(++),Han Junwei~§and Li Hongren~§National Key Laboratory of Robots Technique and System,Harbin Institute of Technology,Harbin 150080,China PhD Candidate ~++ PhD ~§Professor | 2010 | Earthquake Engineering and Engineering Vibration2010，9，1： | 10 |
| 6 | Analysis and Application of the Singularity Locus of the Stewart Platform显示文摘The direct use of the determinant of Jacobian matrix being equal to zero for the singularity analysis is generally difficult which is due to complexity of the Jacobian matrix of 6-DOF parallel manipulators,especially for Stewart platform.Recently,several scholars make their great contribution to the effective solution of this problem,but neither of them find the right answer.This paper gives a brief analysis of the kinematics of the Stewart platform and derives the Jacobian matrices of the system through the velocity equation.On the basis of the traditional classification of singularities,the second type of singularity is investigated.An assumption of any three of the six variables of the Stewart platform as constant is made,then the analytical expression of singularity locus equation of the second type singularity which contains another three pose variables is obtained.The singularity locus is represented in the three-dimensional space through the derived equation.The correctness and validity of the proposed method are verified through examples.Finally,the singularity analysis of an electric Stewart platform in its desired workspace and reachable workspace is implemented.Thus,one can easily identify whether singularity exists in a given workspace of a Stewart platform and determine whether the existed singularity can be avoided through the proposed method.The proposed method also provides theoretical principle for the design and application of the Stewart platform and has great significance for the trajectory planning and control. | MA Jianming HUANG Qitao XIONG Haiguo HAN Junwei | 2011 | Chinese Journal of Mechanical Engineering2011，24，1： | 10 |
| 7 | Hierarchical construction of CNT networks in aramid papers for high-efficiency microwave absorption显示文摘Carbon nanotubes(CNTs)incorporated polymeric composites have been extensively investigated for microwave absorption at target frequencies to meet the requirement of radar cross-section reduction.In this work,a strategy of efficient utilization of CNT in producing CNT incorporated aramid papers is demonstrated.The layer-by-layer self-assembly technique is used to coat the surfaces of meta-aramid fibers and fibrils with CNT,providing novel raw materials available for the large-scale papermaking.The hierarchical construction of CNT networks resolves the dilemma of increasing CNT content and avoiding the agglomeration of CNT,which is a frequent challenge for CNT incorporated polymeric composites.The composite paper,which contains abundant heterogeneous interfaces and long-range conductive networks,is capable of reaching a high permittivity and dielectric loss tangent at a low CNT loading,its complex permittivity is,so far,adjustable in the range of(1.20−j0.05)to(25.17−j18.89)at 10 GHz.Some papers with optimal matching thicknesses achieve a high-efficiency microwave absorption with a reflection loss lower than−10 dB in the entire X-band. | You Wu Li Chen Yixuan Han Panbo Liu Haihong Xu Guanze Yu Yingying Wang Tao Wen Wenbo Ju Junwei Gu | 2023 | Nano Research2023，16，5： | 9 |
| 8 | Cloud Computing-Based Forensic Analysis for Collaborative Network Security Management System显示文摘Internet security problems remain a major challenge with many security concerns such as Internet worms, spam, and phishing attacks. Botnets, well-organized distributed network attacks, consist of a large number of bots that generate huge volumes of spam or launch Distributed Denial of Service (DDoS) attacks on victim hosts. New emerging botnet attacks degrade the status of Internet security further. To address these problems, a practical collaborative network security management system is proposed with an effective collaborative Unified Threat Management (UTM) and traffic probers. A distributed security overlay network with a centralized security center leverages a peer-to-peer communication protocol used in the UTMs collaborative module and connects them virtually to exchange network events and security rules. Security functions for the UTM are retrofitted to share security rules. In this paper, we propose a design and implementation of a cloud-based security center for network security forensic analysis. We propose using cloud storage to keep collected traffic data and then processing it with cloud computing platforms to find the malicious attacks. As a practical example, phishing attack forensic analysis is presented and the required computing and storage resources are evaluated based on real trace data. The cloud-based security center can instruct each collaborative UTM and prober to collect events and raw traffic, send them back for deep analysis, and generate new security rules. These new security rules are enforced by collaborative UTM and the feedback events of such rules are returned to the security center. By this type of close-loop control, the collaborative network security management system can identify and address new distributed attacks more quickly and effectively. | Zhen Chen Fuye Han Junwei Cao Xin Jiang Shuo Chen | 2013 | Tsinghua Science and Technology2013，18，1： | 8 |
| 9 | VARIABLE STRUCTURE CONTROL APPLIED IN ELECTRO-HYDRAULIC SERVO SYSTEM WITH ANN显示文摘可变结构控制(VSC ) 理论被用于这里的 theelectro 水力的伺服系统。VSC 控制法律用 Lyapunov 方法和杆放置被完成。消除啁啾的现象,浸透功能是。采用。proposedVSC 途径是相当柔韧的装载骚乱和系统参数变化。自从包括的失真,阶段 lag 和振幅变细发生在系统窦状隙反应,振幅和阶段基于 Adaline 神经网络并且用 LMSalgorithm,控制(APC ) 算法为失真取消被开发。APC 控制器简单并且装 on-lineadjust,因此,它给精确追踪。 | YAO Jianjun WANG Xiancheng WU Zhenshun HAN Junwei | 2006 | Chinese Journal of Mechanical Engineering2006，19，1： | 6 |
| 10 | Catalyzing polysulfide conversion by g-C3N4 in a graphene network for long-life lithium-sulfur batteries显示文摘 | Meng Wang Qinghua Liang Junwei Han Ying Tao Donghai Liu Chen Zhang Wei Lv Quan-Hong Yang | 2018 | Nano Research2018，11，6： | 4 |
| 11 | 1000 Wh L^(-1)lithium-ion batteries enabled by crosslink-shrunk tough carbon encapsulated silicon microparticle anodes显示文摘Microparticulate silicon(Si),normally shelled with carbons,features higher tap density and less interfacial side reactions compared to its nanosized counterpart,showing great potential to be applied as high-energy lithium-ion battery anodes.However,localized high stress generated during fabrication and particularly,under operating,could induce cracking of carbon shells and release pulverized nanoparticles,significantly deteriorating its electrochemical performance.Here we design a strong yet ductile carbon cage from an easily processing capillary shrinkage of graphene hydrogel followed by precise tailoring of inner voids.Such a structure,analog to the stable structure of plant cells,presents‘imperfection-tolerance’to volume variation of irregular Si microparticles,maintaining the electrode integrity over 1000 cycles with Coulombic efficiency over 99.5%.This design enables the use of a dense and thick(3 m Ah cm^(-2))microparticulate Si anode with an ultra-high volumetric energy density of 1048 Wh L^(-1)achieved at pouch full-cell level coupled with a Li Ni_(0.8)Co_(0.1)Mn_(0.1)O_(2)cathode. | Fanqi Chen Junwei Han Debin Kong Yifei Yuan Jing Xiao Shichao Wu Dai-Ming Tang Yaqian Deng Wei Lv Jun Lu Feiyu Kang Quan-Hong Yang | 2021 | National Science Review2021，8，9： | 4 |
| 12 | The Global Landscape of SARS-CoV-2 Genomes, Variants, and Haplotypes in 2019nCoVR显示文摘On January 22,2020,China National Center for Bioinformation(CNCB)released the 2019 Novel Coronavirus Resource(2019nCoVR),an open-access information resource for the severe acute respiratory syndrome coronavirus 2(SARS-CoV-2).2019nCoVR features a comprehensive integration of sequence and clinical information for all publicly available SARS-CoV-2 isolates,which are manually curated with value-added annotations and quality evaluated by an automated in-house pipeline.Of particular note,2019nCoVR offers systematic analyses to generate a dynamic landscape of SARS-CoV-2 genomic variations at a global scale.It provides all identified variants and their detailed statistics for each virus isolate,and congregates the quality score,functional annotation,and population frequency for each variant.Spatiotemporal change for each variant can be visualized and historical viral haplotype network maps for the course of the outbreak are also generated based on all complete and high-quality genomes available.Moreover,2019nCoVR provides a full collection of SARS-CoV-2 relevant literature on the coronavirus disease 2019(COVID-19),including published papers from PubMed as well as preprints from services such as bioRxiv and medRxiv through Europe PMC.Furthermore,by linking with relevant databases in CNCB,2019nCoVR offers data submission services for raw sequence reads and assembled genomes,and data sharing with NCBI.Collectively,SARS-CoV-2 is updated daily to collect the latest information on genome sequences,variants,haplotypes,and literature for a timely reflection,making 2019nCoVR a valuable resource for the global research community.2019nCoVR is accessible at http://gffzzdbc7b6aaae734bddsbcxc66uxw5np6cnx.ffgz.tsg.suse.edu.cn/ncov/. | Shuhui Song Lina Ma Dong Zou Dongmei Tian Cuiping Li Junwei Zhu Meili Chen Anke Wang Yingke Ma Mengwei Li Xufei Teng Ying Cui Guangya Duan Mochen Zhang Tong Jin Chengmin Shi Zhenglin Du Yadong Zhang Chuandong Liu Rujiao Li Jingyao Zeng Lili Hao Shuai Jiang Hua Chen Dali Han Jingfa Xiao Zhang Zhang Wenming Zhao Yongbiao Xue Yiming Bao | 2020 | Genomics, Proteomics & Bioinformatics2020，18，6： | 4 |
| 13 | ADAPTIVE FEED-FORWARD COMPENSATOR FOR HARMONIC CANCELLATION IN ELECTRO-HYDRAULIC SERVO SYSTEM显示文摘Since the dead zone phenomenon occurs in electro-hydraulic servo system,the output of the system corresponding to a sinusoidal input contains higher harmonic besides the fundamental input,which causes harmonic distortion of the output signal. The method for harmonic cancellation based on adaptive filter is proposed. The task is accomplished by generating reference signals with frequency that should be eliminated from the output. The reference inputs are weighted by the adaptive filter in such a way that it closely matches the harmonic. The output of the adaptive filter is a harmonic replica and is injected to the fundamental signal such that the output harmonic is cancelled leaving the desired signal alone,and the total harmonic distortion (THD) is greatly reduced. The weights of filter are adjusted on-line according to the control error by using least-mean-square (LMS) algorithm. Simulation results performed with a hydraulic system demonstrate the efficiency and validity of the proposed adaptive feed-forward compensator (AFC) control scheme. | YAO Jianjun WANG Liquan JIANG Hongzhou WU Zhenshun HAN Junwei | 2008 | Chinese Journal of Mechanical Engineering2008，21，1： | 3 |
| 14 | RP11-40C6.2 Inactivates Hippo Signaling by Attenuating YAP1 Ubiquitylation in Hepatitis B Virus-associated Hepatocellular Carcinoma显示文摘Background and Aims:Chronic hepatitis caused by hepatitis B virus(HBV)infection is a leading cause of hepatocellular carcinoma(HCC).We investigated the roles of oncogenic HBV infection-associated long noncoding RNAs in HCC.Methods:Bioinformatics analysis of data from the Cancer Genome Atlas(TCGA)was performed to screen potential oncogenic HBV-related lncRNAs.Next,we assessed their expression in clinical samples and investigated their correlation with clinical characteristics.The detailed oncogenic effects were analyzed by performing in vitro and in vivo studies.Results:RP11-40C6.2,an HBV infection-related lncRNA,was identified by analysis of the TCGA–Liver Hepatocellular Carcinoma database.Gene Set Enrichment Analysis and Kyoto Encyclopedia of Genes and Genomes(KEGG)enrichment analysis of differentially expressed genes revealed a strong association of RP11-40C6.2 with the Hippo signaling pathway.RP11-40C6.2 was overexpressed in HCC patients with HBV infection compared to those without HBV infection.RP11-40C6.2 transcription showed a positive association with HBV-X protein(HBx),but not HBV core protein(HBc)expression,both of which are carcinogenic proteins.Luciferase gene reporter and ChIP assays revealed that YAP1/TAZ/TEADs complex enhanced RP11-40C6.2 transcription by binding to its promoter area.RP11-40C6.2 showed oncogenic characteristics in HCC cell lines and in animal models that were mediated via activation of YAP1.In vitro ubiquitylation assay revealed that RP11-40C6.2 can promote the stabilization of YAP1 by stopping phosphorylation at its s127 residue and further stopping its degradation through binding to 14-3-3.Conclusions:RP11-40C6.2 is an HBV infection-related lncRNA that exerts its oncogenic effects by targeting the Hippo signaling pathway. | Han Zhuo Chen Wu Junwei Tang Feihong Zhang Zhenggang Xu Dongwei Sun Yue Teng Zhongming Tan | 2023 | Journal of Clinical and Translational Hepatology2023，11，2： | 3 |
| 15 | Corrosion resistance of tannic acid,d-limonene and nano-ZrO_(2)modified epoxy coatings in acid corrosion environments显示文摘The protection of rusted carbon steel in acid corrosion environments is of great significance for equipment to keep safe operation.In this work,we presented a method to protect the rusted steel by ru st conversion treatment and epoxy coating.Tannic acid was selected as rust conversion agent.Tannic acid,D-limonene and nano-ZrO_(2)were used to improve the corrosion resistance of epoxy coatings.The Raman spectra,Xray diffraction and 3 D confocal images were used to characterize the rust conversion reaction.Ad hesion test showed that the loss of wet adhesion of the optimal coating was relatively low due to the addition of tannic acid,limonene and nano-ZrO(2).The corrosion resistance of five different coatings was investigated by scanning electron microscopy(SEM)and electrochemical analysis.Results show that after 264 h acid immersion,the low frequency resistance of the optimal coating consisting of rust conversion treatment and additives is 10^(7)Ωcm^(2),three orders magnitude higher than that of the pristine coating.Moreover,SEM indicates that the optimal coating possesses a smooth surface and an unbroken interface between substrate and coating.Accordingly,the corrosion-resistant mechanism of the hybrid coating is proposed. | Junwei Chang Zhenyu W ang En-hou Han Xinlei Liang Gang Wang Zuyao Yi Na Li | 2021 | Journal of Materials Science & Technology2021，，6： | 3 |
| 16 | Enhanced Roles of Carbon Architectures in High-Performance Lithium-Ion Batteries显示文摘Lithium?ion batteries(LIBs), which are high?energy?density and low?safety?risk secondary batteries, are underpinned to the rise in electrochemical energy storage devices that satisfy the urgent demands of the global energy storage market. With the aim of achiev?ing high energy density and fast?charging performance, the exploitation of simple and low?cost approaches for the production of high capacity, high density, high mass loading, and kinetically ion?accessible electrodes that maximize charge storage and transport in LIBs, is a critical need. Toward the construction of high?performance electrodes, carbons are promisingly used in the enhanced roles of active materials, electrochemi?cal reaction frameworks for high?capacity noncarbons, and lightweight current collectors. Here, we review recent advances in the carbon engi?neering of electrodes for excellent electrochemical performance and structural stability, which is enabled by assembled carbon architectures that guarantee su cient charge delivery and volume fluctuation bu ering inside the electrode during cycling. Some specific feasible assem?bly methods, synergism between structural design components of carbon assemblies, and electrochemical performance enhancement are highlighted. The precise design of carbon cages by the assembly of graphene units is potentially useful for the controlled preparation of high?capacity carbon?caged noncarbon anodes with volumetric capacities over 2100 mAh cm^(-3). Finally, insights are given on the prospects and challenges for designing carbon architectures for practical LIBs that simultaneously provide high energy densities(both gravimetric and volumetric) and high rate performance. | Lu Wang Junwei Han Debin Kong Ying Tao QuanHong Yang | 2019 | Nano-Micro Letters2019，11，1： | 2 |
| 17 | Effects of Dietary Vitamins A,B_2,and B_6 Supplementation on Growth and Feed Utilization of Juvenile Chinese Soft-shelled Turtle Pelodiscus sinensis according to an Orthogonal Array Experiment显示文摘An orthogonal experimental design OA_9(3~3) was used to evaluate the effects of vitamins(A, B_2, and B_6) on the growth and digestive ability of the juvenile Chinese soft-shelled turtle, Pelodiscus sinensis(initial weight, 5.9±0.2 g). A total of 135 turtles were divided into 9 groups, which each included 15 individuals. The results revealed that vitamin A(VA) had the strongest impacts on the growth rate and feed utilization among the three vitamins; 35,000 IU kg^(-1) VA had optimal effects on the feeding intake and specific growth rate, and 20,000 IU kg^(-1) VA had optimal effects on protein digestibility and the feed conversion ratio. Vitamin B_2(VB_2) was essential for regulating protein deposition and the energy efficiency for growth of the turtles; 120 mg kg^(-1) VB_2 resulted in increased protein and energy deposition, and 180 mg kg^(-1) VB_2 had greater beneficial effects on the growth rate. Vitamin B_6(VB_6) had important effects on protein and feed efficiency; however, VB_6 at an excessive level(120 mg kg^(-1)) restricted turtle growth. Based on the above growth results, dietary supplementation of VA, VB_2 and VB_6 at levels of 35,000 IU kg^(-1), 180 mg kg^(-1) and 70 mg kg^(-1), respectively, were recommended for the juvenile soft-shelled turtle. | Junwei LI Zhencai YANG Xiaoling HAN Quansen XIE Haiyan LIU | 2016 | Asian Herpetological Research2016，7，4： | 2 |
| 18 | Branched Fluorine/Adamantane Interfacial Compatibilizer for PBO Fibers/Cyanate Ester Wave-Transparent Laminated Composites显示文摘Comprehensive Summary Branched fluorine/adamantane PBO precursor(preFABPBO),synthesized via random co-condensation between 2,2-bis(3-amino-4-hydroxyphenyl)hexafluoro propane,1,3-adamantanedicarbonyl dichloride,and trimesoyl chloride,is performed as interfacial compatibilizer,bisphenol A dicyanate ester(BADCy)resin as polymer matrix,and poly(p-phenylene-2,6-benzobisoxazole)(PBO)fibers as reinforcements to prepare PBO fibers/FABPBO-BADCy wave-transparent laminated composites by high temperature molding.The mechanical properties,wave-transparent performances,and heat resistances of PBO fibers/BADCy composites are simultaneously improved by the addition of preFABPBO.The interlaminar shear strength(ILSS)and flexural strength of PBO fibers/FABPBO-BADCy composites are 48.9 and 665.3 MPa,respectively,increased by 33.2%and 13.3%compared to those of PBO fibers/BADCy composites(36.7 and 587.4 MPa).The dielectric constant and dielectric loss values at 106 Hz are 2.53 and 0.003,respectively,lower than those of PBO fibers/BADCy composites(3.06 and 0.006),and the corresponding wave transmission efficiency is 94.8%,which also presents excellent stability over the wide temperature(25-200℃)and frequency range(103-107 Hz and 8.2-12.4 GHz).Meanwhile,the heat resistance index and glass transition temperature are 229.9℃and 247.5℃,also better than those of PBO fibers/BADCy composites(229.6℃and 247.1℃). | Zheng Liu Xiaoli Fan Muyi Han Hao Li Junliang Zhang Lixin Chen Qiju Zhu Junwei Gu | 2023 | Chinese Journal of Chemistry2023，41，8： | 2 |
| 19 | Class attention network for image recognition显示文摘Visual attention has become a popular and widely used component for image recognition.Although various attention-based methods have been proposed and achieved relatively competitive results,it is observed that the semantic features of each class are likely to entangle with each other,and few studies focus on explicitly extracting category-aware features so far.To address this issue,this paper presents an attention-based image recognition method by using class-specific dictionary learning to disentangle the neural network’s outputs into class-dependent features,thus boosting their discrimination abilities.Specifically,we develop a class attention network(CANet)via integrating a simple yet effective class-specific attention encoding(CAE)module on the top of convolutional layers.Given the feature maps of the convolutional neural networks(CNNs),the CAE module learns a class-specific dictionary,which is leveraged to encode attention maps for each category.Then these attention maps are multiplied by the input features for classwise adaptive feature refinement.Extensive experiments on the PASCAL VOC 2007,PASCAL VOC 2012,MS COCO,and CUB-200-2011 datasets demonstrate the fabulous performance of our method on multiple visual recognition tasks,including multi-label image classification and fine-grained visual classification.In addition,the visualization results testify that CNNs can explicitly learn class-wise feature representations by introducing class-specific dictionary learning. | Gong CHENG Pujian LAI Decheng GAO Junwei HAN | 2023 | Science China(Information Sciences)2023，66，3： | 2 |
| 20 | A Shape-Based Image Retrieval Method using Salient Edges显示文摘 | Junwei Han Lei Guo etc | 2003 | Signal Processing:Image Communication2003，18，7： | 1 |
您所在的机构暂未开通此部分的功能，请联系管理员