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基于SCI-CA模型的船舶纵摇多维多步预测方法

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控制与决策 2025年第1期40卷 64-70页

作者：王宇超赵洵杨周琦傅荟璇哈尔滨工程大学智能科学与工程学院哈尔滨150000

海洋环境复杂多变,船舶航行容易受到风浪、洋流等因素的干扰,船舶运动具有非线性、耦合性等特点.针对传统的船舶运动姿态预测方法对时序数据的提取效率尚有不足,难以达到高精度预测效果的问题,提出样本卷积交互-通道注意力(SCI-CA)神经... 详细信息

海洋环境复杂多变,船舶航行容易受到风浪、洋流等因素的干扰,船舶运动具有非线性、耦合性等特点.针对传统的船舶运动姿态预测方法对时序数据的提取效率尚有不足,难以达到高精度预测效果的问题,提出样本卷积交互-通道注意力(SCI-CA)神经网络船舶纵摇运动预测模型.该模型采用多类别船舶运动姿态数据作为输入,将输入拆分为两个子序列,利用样本卷积交互网络(SCI)的递归下采样卷积交互结构,结合多分辨率聚合而成的丰富特征,提高船舶运动数据深层特征的利用率.再通过通道注意力机制(CA)提高有效通道的权重比例,并以残差结构输入到全连接层,得到最后的预测结果.实船数据验证结果表明,SCI-CA组合模型预测结果较其他模型预测精度高,其平均绝对百分比误差(MAPE)、均方根误差(RMSE)均有明显降低,验证了SCI-CA模型预测船舶运动的有效性.

关键词：船舶纵摇 SCI-Net 通道注意力交互学习结构组合模型多步预测

基于深度学习的多会话协同攻击加密流量检测技术研究

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信息安全研究 2025年第1期11卷 66-73页

作者：周成胜孟楠赵勋邱情芳中国信息通信研究院安全研究所北京100191 北京鉴衡认证中心有限公司北京100010

恶意加密攻击流量检测是当前网络安全领域的一项重要研究课题.攻击者利用多会话的加密流量实现多阶段协同攻击正在成为一种发展趋势.分析了目前主流恶意加密流量检测方法存在的问题,提出一种面向多会话协同攻击场景的恶意加密流量检测方... 详细信息

恶意加密攻击流量检测是当前网络安全领域的一项重要研究课题.攻击者利用多会话的加密流量实现多阶段协同攻击正在成为一种发展趋势.分析了目前主流恶意加密流量检测方法存在的问题,提出一种面向多会话协同攻击场景的恶意加密流量检测方法.该方法通过提取多会话特征数据并转换为图像,利用深度学习方法在图像识别领域的优势,将加密流量识别问题转换为图像识别问题,从而间接实现了恶意加密流量检测.基于实验数据的初步测试结果验证了该方法的有效性.

关键词：深度学习加密流量多会话协同攻击网络安全

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改进粒子群的多无人机协同搜索路径优化

兵器装备工程学报 2025年第1期46卷 213-220页

作者：赵迅刘云平王炎还红华徐梁吴士林南京信息工程大学南京210000 江苏省农业科学院南京210000 海军大连舰艇学院辽宁大连116018 香港生产力促进局中国香港999077

粒子群算法具有收敛速度快、结构简单、计算复杂度低等优点广泛应用于搜索领域,然而多无人机采用传统粒子群算法协同搜索时,由于算法具有随机性且群体内共享信息并未进行筛选,会出现搜索路径大量重复的现象,造成额外的资源消耗。针对此... 详细信息

粒子群算法具有收敛速度快、结构简单、计算复杂度低等优点广泛应用于搜索领域,然而多无人机采用传统粒子群算法协同搜索时,由于算法具有随机性且群体内共享信息并未进行筛选,会出现搜索路径大量重复的现象,造成额外的资源消耗。针对此问题,提出一种改进粒子群的多无人机协同搜索算法。将传统粒子群算法应用于多无人机协同搜索,在此基础上利用蚁群算法对粒子群进行改进,通过蚁群算法对群体内共享的位置信息进行筛选,计算出信息素指引位置,然后将信息素指引位置用于无人机搜索过程中粒子群算法的迭代,从而减少无人机往复搜索的问题。仿真实验表明:该搜索算法可以有效降低搜索的重复路径,减少搜索的总路程。

关键词：多无人机粒子群算法蚁群算法协同搜索路径优化

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基于生成式人工智能的网络安全主动防御技术

信息通信技术与政策 2025年第1期51卷 25-32页

作者：周成胜赵勋田慧蓉中国信息通信研究院安全研究所北京100191

基于生成式人工智能,对策略-保护-检测-响应(Policy-Protection-Detection-Response,PPDR)安全模型展开研究,有效依托生成式人工智能模型的入侵检测、防火墙、蜜罐技术、网络漏洞扫描等先进技术,进而构建出具有科学性、系统性的网络安... 详细信息

基于生成式人工智能,对策略-保护-检测-响应(Policy-Protection-Detection-Response,PPDR)安全模型展开研究,有效依托生成式人工智能模型的入侵检测、防火墙、蜜罐技术、网络漏洞扫描等先进技术,进而构建出具有科学性、系统性的网络安全动态防御模型。该模型表现出较强的主动防御功能,能够对网络安全的动态性、主动性特征进行全方位展示。整个生成式人工智能模型防护体系在依托诱骗系统、入侵检测系统、防火墙所进行的联动协同作用下发生较大的改变,实现了由静态向动态的转化,防火墙的动机性也随之有较大幅度的提升,同时网络整体防护能力达到较高水平。

关键词：网络安全主动防御技术人工智能 PPDR模型生成式

Fine-Scale Quantification of Absorbed Photosynthetically Active Radiation(APAR)in Plantation Forests with 3D Radiative Transfer Modeling and LiDAR Data

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Plant Phenomics 2024年第2期6卷 401-415页

作者： xun zhao Jianbo Qi Zhexiu Yu Lijuan Yuan Huaguo Huang Key Laboratory for Silviculture and Conservation of Ministry of Education Beijing Forestry UniversityBeijing 100083China Innovation Research Center of Satellite Application Faculty of Geographical ScienceBeijing Normal UniversityBeijing 100875China

Quantifying the relationship between light and stands or individual trees is of great significance in understanding tree competition,improving forest productivity,and comprehending ecological ***,accurately depicting the spatiotemporal variability of light under complex forest structural conditions poses a challenge,especially for precise forest management decisions that require a quantitative study of the relationship between fine-scale individual tree structure and light.3D RTMs(3-dimensional radiative transfer models),which accurately characterize the interaction between solar radiation and detailed forest scenes,provide a reliable means for depicting such relationships.

关键词： quantification lidar active modeling apar data call with absorbed fine-scale

Tensor Decomposition-assisted Multiview Subgroup Analysis

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ACTA MATHEMATICA SINICA-ENGLISH SERIES 2024年第2期41卷 588-618页

作者： zhao, xun Zhou, Ling Zhang, Wei Jia Lin, Hua Zhen Southwestern Univ Finance & Econ Ctr Stat Res Sch Stat New Cornerstone Sci Lab Chengdu Peoples R China Xian Jiaotong Liverpool Univ Dept Financial & Actuarial Math Suzhou 215123 Peoples R China

关键词： Multiview subgroup analysis tensor decomposition data integration ADMM algorithm

Microstructure and Thermal Properties of SiCp/Cu Composites with Mo Coating on SiC Particles

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Journal of Wuhan University of Technology(Materials Science) 2017年第5期32卷 1013-1018页

作者：刘猛白淑心 LI Shun zhao xun XIONG Degan Department of Materials Science and Engineering National University of Defense Technology Changsha 410073 China

SiCp/Cu composites with a compact microstructure were successfully fabricated by vacuum hot-pressing method. In order to suppress the detrimental interfacial reactions and ameliorate the interfacial bonding between copper and silicon carbide, molybdenum coating was deposited on the surface of silicon carbide by magnetron sputtering method and crystallized heat-treatment. The effects of the interfacial design on the thermo-physical properties of Si Cp/Cu composites were studied in detail. Thermal conductivity and expansion test results showed that silicon carbide particles coated with uniform and compact molybdenum coating have improved the comprehensive thermal properties of the Si Cp/Cu composites. Furthermore, the adhesion of the interface between silicon carbide and copper was significantly strengthened after molybdenum coating. Si Cp/Cu composites with a maximum thermal conductivity of 274.056 W/（m·K） and a coefficient of thermal expansion of 9 ppm/K were successfully prepared when the volume of silicon carbide was about 50%, and these Si Cp/Cu composites have potential applications for the electronic packageing of the high integration electronic devices.

关键词： SiCp/Cu composites hot-pressing magnetron sputtering molybdenum coating thermal conductivity

Late Cenozoic Geomorphology, Geochronology and Physiography of Yuntaishan in Southern Taihang Mountain, North China

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Acta Geologica Sinica(English Edition) 2010年第1期84卷 230-239页

作者： WU Zhonghai zhao Xitao MA Yinsheng zhao xun zhao Ting YANG Shouzheng GAO Linzhi Institute of Geomechanics Chinese Academy of Geological Sciences Beijing 100081 China Institute of Geology and Geophysics Chinese Academy of Sciences Beijing 100029 China Chinese Academy of Geological Sciences Beijing 100037 China Institute of mineral resources Chinese Academy of Geological Sciences Beijing 100037 China The 2nd geological team Henan bureau of geology and mineral resources Jiaozuo 454002 China Institute of Geology Chinese Academy of Geological Sciences Beijing 100037 China

The late Cenozoic geomorphic features and geochronologic data of the Zhingfang River catchment in the Yuntaishan World Geopark are studied. Several quarternary geochronologic methods, including electron spin resonance （ESR）, optically stimulated luminescence （OSL）, thermo-luminescence （TL） and U-series are presented in this paper. The results suggest that there are two planation surfaces, named as the Taihang surface which is a peneplain of Taihang stage formed during Oligocene or Oligocene to early-middle Miocene period, and Tang-hien surface which is a mature wide valley of Tang-hien stage formed during late Miocene-Pliocene or Piiocene-early Pleistocene period and probably ended prior to 2.2-2.6 Ma based on ESR dating. After the Tang-hien stage, the incision and aggradation of the river formed six stream terraces with heights of 3-5 m, 8-12 m, 22-24 m, 28-38 m, 50-62 m and 80-85 m above the river bottom, respectively. The dating results of the alluvium sediments suggest that these terraces were formed during Holocene, 20-23 ka B.P., 110-120 ka B.P., 200-240 ka B.P., 840-1200 ka B.P. or ~450 ka B.P. and 1600-1800 ka B.P. or -1100 ka B.P., respectively. These results indicate that episodic incision of the river, which controls the formation of the scenery in the Yuntaishan World Geopark, was mainly influenced by the periodic dry-wet climate change during late Cenozoic mountain uplift.

关键词： geomorphology geochronology planation surface river terrace late Cenozoic,southern Taihang Mountains North China

Report on 3.4 Ga SHRIMP Zircon Age from the Yuntaishan Geopark in Jiaozuo, Henan Province

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Acta Geologica Sinica(English Edition) 2006年第1期80卷 52-57页

作者： GAO Linzhi zhao Ting WAN Yusheng zhao xun MA Yinsheng YANG Shouzheng Institute of Geology Chinese Academy of Geological Sciences Beijing 100037 Institute of Mineral Resources Chinese Academy of Geological Sciences Beijing 100037 Chinese Academy of Geological Sciences Beijing 100037 Beijing Center of SHRIMP Beijing 100037 Institute of Geomechanics Chinese Academy of Geological Sciences Beijing 100037 The Second Geological Team Bureau of Geology and Mineral Resources of Henan Province Jiaozuo Henan 454100

Using the reported new U-Pb age with the Sensitive High-Resolution Ion Microprobe （SHRIMP Ⅱ）, zircon U-Pb ages were obtained from two samples of K-feldspar felsic paragneiss and K-feldspar gneissoid trondhjemite on the southern margin of the Taihang Mountains in the North China Craton. The protolith of the K-feldspar felsic paragneiss is argillaceous-sandy clastic sedimentary rock, probably deposited in the Neoarchean. Most of the detritus zircons show heavy loss of Pb. Five spots of zircons near the upper point, yield a weighted mean ^207Pb/^206Pb age of 3399±8 Ma, representing an age of the sedimentary source. Two groups of zircons from the K-feldspar gneissoid trondhjemite give weighted mean ^207Pb/^206Pb ages of 2511±13 Ma and 2735±16 Ma respectively. The former represents the emplacement time of the pluton, while the latter is interpreted as the age of the inherited zircons. The new data support that the Archean geological body in the central zone has an affinity with those from the eastern block of the North China Craton.

关键词： Neoarchean SHRIMP supracrustal rock volcanic rock North China Craton