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Cross-Modal Complementary Network with Hierarchical Fusion for Multimodal Sentiment Classification

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Tsinghua Science and Technology 2022年第4期27卷 664-679页

作者： Cheng Peng Chunxia Zhang xiaojun xue Jiameng Gao Hongjian Liang Zhengdong Niu School of Computer Science and Technology Beijing Institute of TechnologyBeijing 100081China School of Information Production and SystemsWaseda UniversityFukuoka 808-0135Japan

Multimodal Sentiment Classification(MSC)uses multimodal data,such as images and texts,to identify the users'sentiment polarities from the information posted by users on the *** has attracted considerable attention because of its wide applications in social computing and opinion ***,improper correlation strategies can cause erroneous fusion as the texts and the images that are unrelated to each other may ***,simply concatenating them modal by modal,even with true correlation,cannot fully capture the features within and between *** solve these problems,this paper proposes a Cross-Modal Complementary Network(CMCN)with hierarchical fusion for *** CMCN is designed as a hierarchical structure with three key modules,namely,the feature extraction module to extract features from texts and images,the feature attention module to learn both text and image attention features generated by an image-text correlation generator,and the cross-modal hierarchical fusion module to fuse features within and between *** a CMCN provides a hierarchical fusion framework that can fully integrate different modal features and helps reduce the risk of integrating unrelated modal *** experimental results on three public datasets show that the proposed approach significantly outperforms the state-of-the-art methods.

关键词： multimodal sentiment analysis multimodal fusion Cross-Modal Complementary Network(CMCN) hierarchical fusion joint optimization

Boosting hydrocarbon conversion via Cu-doping induced oxygen vacancies on CeO2 in CO2 electroreduction

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Journal of Energy Chemistry 2025年第1期100卷 66-76页

作者： Lei xue Tong Shi Chenhui Han Heng Zhang Fenrong Liu Haorun Li Yan Wang xiaojun Gu Shanghong Zeng Inner Mongolia Key Laboratory of Chemistry and Physics of Rare Earth Materials School of Chemistry and Chemical Engineering Inner Mongolia University State Key Laboratory of Coal Conversion Institute of Coal Chemistry Chinese Academy of Sciences Institute of Catalysis Department of Chemistry Zhejiang University National Key Laboratory of Baiyunobo Rare Earth Resource Research and Comprehensive Utilization Baotou Research Institute of Rare Earths

Conversion of CO2back to hydrocarbons is the most direct way of closing the“carbon cycle”,and its significance is further enlarged if this process is driven by renewable energies such as ***,precisely controlling the product selectivity towards hydrocarbons against the competitive hydrogen evolution remains challenging,especially for Cu-based ***,we report a novel defect engineering strategy,by which Cu-doping-induced oxygen vacancies on CeO2nanorods were effectively created,with adjustable vacancy/Cu *** resulting optimum catalyst shows up to 79% catalytic current density to hydrocarbons （excluding CO）,with 49% faradaic efficiency to *** and density functional theory unveil that the ratio between oxygen vacancy and Cu affects significantly the formation of*CHO and activation of H2O,which leads to the following deep hydrogenation to *** findings may spur new insights for designing and developing more controllable chemical process relevant to CO2utilization.

关键词： Oxygen vacancy Hydrocarbon production Reaction mechanism

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爆炸焊接复合钢板制复合管耐腐蚀性能研究

压力容器 2021年第1期38卷 68-74页

作者：薛小军四川惊雷科技股份有限公司四川宜宾644623

以825合金为内覆层材料,L415QS(X60)管线钢为基层材料,采用爆炸复合钢板和折弯成型(JCO成型)工艺制造了一根长度12 m的复合管,对其管体和焊缝的内覆层825合金进行了晶间腐蚀、点腐蚀和应力腐蚀性能试验,晶间腐蚀和点腐蚀的试验结果和原... 详细信息

以825合金为内覆层材料,L415QS(X60)管线钢为基层材料,采用爆炸复合钢板和折弯成型(JCO成型)工艺制造了一根长度12 m的复合管,对其管体和焊缝的内覆层825合金进行了晶间腐蚀、点腐蚀和应力腐蚀性能试验,晶间腐蚀和点腐蚀的试验结果和原材料相当,在模拟酸性油气田工况介质的应力腐蚀试验中评定合格。

关键词：双金属管冶金复合管爆炸焊接 825合金耐腐蚀性能

A Novel Thermal Controlled Optical Attenuator

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材料科学与工程（中英文版） 2010年第7期4卷 12-17页

作者： Pengqin Wu Tong Zhang Anming Hu xiaojun xue Xiaoyang Zhang Qiuyue Chen School of Electronic Science and Engineering Southeast University and Key Laboratory of Micro-lnertial Instrument and Advanced Navigation Technology Ministry of Education Nanjing 210096 China Department of Mechanical and Mechatronics Engineering University of Waterloo Waterloo N2L 3G1 Canada

Virtual Field Geologic Trip System

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Global Geology 2003年第2期8卷 203-207页

作者： Jian Wang, Linfu xue, xiaojun ZhouCollege of Earth Sciences, Jilin University, Changchun, 130061 China College of Earth Sciences Jilin University Changchun 130061 China

Virtual Field Geologic Trip System (VFGTS) constructed by the technique of visualization can efficiently present geologic field information and widely used in the field of geologic education. This paper introduces the developing thinking of VFGTS and discusses the main implement processes. Building VFGTS mainly includes systemically gathering of field geological data, the building of virtual geological world, and displaying of virtual geologic world and human-computer interaction.

关键词： Virtual Field Geologic Trip System, the technique of 3D visualization, 3D geological world, 3D graph ic engine

Dynamic Event-Triggered Formation Control for Multiple Quadrotor UAVs

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Dynamic Event-Triggered Formation Control for Multiple Quadr...

啮合同向双螺杆挤出机结构参数对混合关键参量的影响

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作者： WANG Hongbin ZHOU Zhen WANG Yueling ZHANG Mingquan xue xiaojun Key Lab of Industrial Computer Control Engineering of Hebei Province Yanshan University

This paper deals with the formation control problem for a group of quadrotor unmanned aerial vehicles（UAVs） through a modified dynamic event-triggered control protocol. The stability proof for the state space origin of the overall closed-loop system is derived from the singular perturbation method and Lyapunov stability theory. An event-triggered formation control protocol in terms of a dynamically varying threshold parameter is delicately carried out while acquiring satisfactory resource efficiency, and Zeno behavior of triggering time sequences is excluded. Finally, simulations on four quadrotor UAVs are given to verify the effectiveness of the theoretical results.

关键词： Formation control Singular perturbation Dynamic event-triggered controller Multiple quadrotor UAVs

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兵工学报 2022年第10期43卷 2640-2648页

作者：李成薛晓俊胡建树尹艳华北京理工大学化学与化工学院北京102488

为探究双螺杆结构参数对混合过程关键参量的影响,研究啮合同向双螺杆挤出机的8个结构参数对混合过程6种关键参量(温度峰值、压力峰值、黏性耗散、混合指数、平均停留时间、扭矩结果)的影响规律。采用正交试验设计双螺杆挤出机不同结构... 详细信息

为探究双螺杆结构参数对混合过程关键参量的影响,研究啮合同向双螺杆挤出机的8个结构参数对混合过程6种关键参量(温度峰值、压力峰值、黏性耗散、混合指数、平均停留时间、扭矩结果)的影响规律。采用正交试验设计双螺杆挤出机不同结构参数组合的试验方案,在混合过程中分别建立不同结构参数组合对于6种关键参量影响的预测数学模型,使用同向双螺杆挤出软件Ludovic对建立的预测数学模型进行求解计算,通过统计产品与服务解决方案(SPSS)软件对计算结果进行分析。结果表明:1)温度峰值随反向螺纹元件导程的增加而升高,随正向螺纹元件导程1的增加而降低;2)与反向捏合块相比,反向螺纹元件可以建立更大的压力。在实际工程中,一般将反向螺纹元件或反向捏合块放置在螺杆排气段前,建立一定的真空度;3)随螺杆元件中加入反向螺纹元件、反向捏合块元件会导致螺杆填充度增加,黏性耗散增大;4)混合指数随着正向捏合块导程和反向螺纹元件导程增加而增大;5)反向螺纹元件和捏合块可以延长物料在双螺杆中的停留时间;6)扭矩的极显著影响因素:正向螺纹元件导程2和反向螺纹元件导程。

关键词：双螺杆挤出机结构参数混合过程影响规律混合关键参量

融合趋势嵌入和粒度增强网络的小样本医学时间序列预测

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计算机辅助设计与图形学学报 2024年第6期36卷 948-959页

作者：于敬楠张春霞薛新月薛晓军牛振东北京理工大学计算机学院北京100081

随着大数据分析和深度学习的迅猛发展,时间序列预测方法被广泛应用于医学、金融、气象和交通等领域,为众多应用任务提供决策支持.针对小样本医学数据特征维度低和现有深度学习方法易于造成过拟合问题,研究小样本医学时间序列预测任务,... 详细信息

随着大数据分析和深度学习的迅猛发展,时间序列预测方法被广泛应用于医学、金融、气象和交通等领域,为众多应用任务提供决策支持.针对小样本医学数据特征维度低和现有深度学习方法易于造成过拟合问题,研究小样本医学时间序列预测任务,提出融合趋势嵌入和粒度增强网络的预测方法.首先在卷积神经网络的框架下,粒度增强网络分别从时间维度和特征维度将医学时间序列数据提升为三维张量;然后以医学时间序列样本的一阶差分作为方向向量,基于方向导数生成趋势嵌入表征;再构建静态空间邻接矩阵和动态时间邻接矩阵,并通过时空图卷积网络学习时空嵌入表征;最后将构建的时空嵌入、预测嵌入和趋势嵌入整合到基于图卷积网络、门控循环单元和残差网络的网络架构之中,实现医学时间序列预测.在Cancer,ILI,Baries和COVID-19这4个数据集上的实验结果表明,与预测结果最佳的基线模型T-GCN相比,所提方法在每个数据集的MAE,MAPE和RMSE这3个评价指标上分别降低34.0607,0.0107,70.6728;11.1808,0.0950,20.7285;0.3546,0.1127,0.4553和449.2437,0.0144,1174.7273,其性能优于基线方法,验证了该方法的可行性及有效性.

关键词：时间序列预测趋势嵌入粒度增强网络时空图卷积网络

与生物质气化联合循环系统耦合的压缩空气储能系统性能分析

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中国电机工程学报 2023年第19期43卷 7569-7579页

作者：薛小军胡刚刚陈衡吕佳阳徐钢杨志平姜雪热电生产过程污染物监测与控制北京市重点实验室(华北电力大学) 北京市昌平区102206 国网辽宁省电力有限公司经济技术研究院辽宁省沈阳市110000

为提高压缩空气储能系统的性能,该文提出一种生物质气化联合循环系统与压缩空气储能系统集成的新方案。储能过程中,利用联合循环系统的给水冷却高温压缩空气。释能过程中,在联合循环系统中的余热锅炉部分布置旁路烟道。来自储气罐的压... 详细信息

为提高压缩空气储能系统的性能,该文提出一种生物质气化联合循环系统与压缩空气储能系统集成的新方案。储能过程中,利用联合循环系统的给水冷却高温压缩空气。释能过程中,在联合循环系统中的余热锅炉部分布置旁路烟道。来自储气罐的压缩空气经旁路烟道加热后,直接通入至联合循环系统的燃烧室。该耦合方案采用能量梯级利用的原理,可以实现系统效率的提升;同时还可以节省常规压缩空气储能系统中的蓄热罐、蓄冷罐和膨胀机等设备。采用Ebsilon软件对耦合系统进行模拟,并对耦合系统进行热力学分析和经济性分析。结果表明:新方案中压缩空气储能系统的循环效率和能量密度分别为86.14%和7.48MJ/m^(3),整个集成系统的总效率为37.20%。此外,新方案的动态投资回收期为3.73年,净现值为89.65万元。该研究为提高压缩空气储能系统的性能提供了新的技术选项。

关键词：压缩空气储能系统生物质气化联合循环系统系统集成热力学分析经济性分析