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LiDAR-Visual SLAM with Integrated Semantic and Texture Information for Enhanced Ecological Monitoring Vehicle Localization

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Computers, Materials & Continua 2025年第1期82卷 1401-1416页

作者： Yiqing Lu liutao zhao Qiankun zhao Foreign Environmental Cooperation Center Ministry of Ecology and Environment of PRCBeijing100035China Beijing Computing Center Co. Ltd.Beijing Academy of Science and TechnologyBeijing100083China Beijing Guyu Interactive Artificial Intelligence Application Co. Ltd.Beijing100024China

Ecological monitoring vehicles are equipped with a range of sensors and monitoring devices designed to gather data on ecological and environmental *** vehicles are crucial in various fields,including environmental science research,ecological and environmental monitoring projects,disaster response,and emergency management.A key method employed in these vehicles for achieving high-precision positioning is LiDAR(lightlaser detection and ranging)-Visual Simultaneous Localization and Mapping(SLAM).However,maintaining highprecision localization in complex scenarios,such as degraded environments or when dynamic objects are present,remains a significant *** address this issue,we integrate both semantic and texture information from LiDAR and cameras to enhance the robustness and efficiency of data ***,semantic information simplifies the modeling of scene elements,reducing the reliance on dense point clouds,which can be less ***,visual texture information complements LiDAR-Visual localization by providing additional contextual *** incorporating semantic and texture details frompaired images and point clouds,we significantly improve the quality of data association,thereby increasing the success rate of *** approach not only enhances the operational capabilities of ecological monitoring vehicles in complex environments but also contributes to improving the overall efficiency and effectiveness of ecological monitoring and environmental protection efforts.

关键词： LiDAR-Visual simultaneous localization and mapping integrated semantic texture information

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浅谈高性能计算用户群分析在产品分析中的重要性

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计算机科学与应用 2014年第11期4卷 269-275页

作者：黄雪赵琉涛金翊北京市计算中心北京

本文通过高性能计算用户调研,得出基于Web的高性能计算管理平台解决方案因为没有紧密贴合用户群业务流程致使其不被广泛应用。继而通过材料类用户群体分析出发,分析用户群体结构,总结用户群特征以及使用中常见类问题。并以得到用户验证... 详细信息

本文通过高性能计算用户调研,得出基于Web的高性能计算管理平台解决方案因为没有紧密贴合用户群业务流程致使其不被广泛应用。继而通过材料类用户群体分析出发,分析用户群体结构,总结用户群特征以及使用中常见类问题。并以得到用户验证且认可的HPC-Cloud平台流程创新点为例,阐明用户群体以及业务特征分析对于产品分析、定义阶段的重要性。

关键词：高性能计算用户问题 HPC-Cloud

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三接收方公钥密码系统

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网络与信息安全学报 2020年第6期6卷 128-136页

作者：赵琉涛钟林刘吉东王彩群吴丹北京市计算中心北京100094 北京北科融智云计算科技有限公司北京100094 国家计算机网络应急技术处理协调中心北京100089

提出一种三接收方公钥加密方案,该方案中发送方对消息进行加密,而三接收方均能够使用各自的私钥对消息进行解密。基于双线性映射,构造出两个安全性不同的三接收方公钥加密方案。形式化证明如果间隙双线性Diffie-Hellman问题和计算性Diff... 详细信息

提出一种三接收方公钥加密方案,该方案中发送方对消息进行加密,而三接收方均能够使用各自的私钥对消息进行解密。基于双线性映射,构造出两个安全性不同的三接收方公钥加密方案。形式化证明如果间隙双线性Diffie-Hellman问题和计算性Diffie-Hellman问题是困难的,则所提的两个方案分别具有选择明文攻击安全和适应性选择密文攻击安全。所提方案仅增加了一项指数运算和一项哈希运算,就实现了3个独立的接收方,因此该方案效率较高。分析表明,该方案能够提高TLS协议的安全性并应用于分级监管公钥密码系统。

关键词：三接收方公钥加密双线性映射间隙双线性Diffie-Hellman问题计算性Diffie-Hellman问题

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中华大蟾蜍视网膜Müller细胞形态观察

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河南农业大学学报 2015年第6期49卷 822-826页

作者：杨鹏飞赵留涛赵新芳闫峰宾杜宝宝刘忠虎河南农业大学牧医工程学院河南郑州450002

为了解两栖动物中华大蟾蜍(Bufo gargarizans)视网膜中神经胶质细胞形态结构及分布,利用生物显微技术、投射电镜技术和免疫组化技术显示了中华大蟾蜍视网膜胶质细胞形态结构。观察结果显示,中华大蟾蜍视网膜中仅分布有Müller细胞。光镜... 详细信息

为了解两栖动物中华大蟾蜍(Bufo gargarizans)视网膜中神经胶质细胞形态结构及分布,利用生物显微技术、投射电镜技术和免疫组化技术显示了中华大蟾蜍视网膜胶质细胞形态结构。观察结果显示,中华大蟾蜍视网膜中仅分布有Müller细胞。光镜下Müller细胞在视网膜中成单层分布,细胞长轴沿着眼球半径成放射状排列,胞体位于内核层,胞体发出至少2个主干突起。电镜下视网膜Müller细胞的胞质及胞核着色较周围细胞深,细胞内有明显的纤维成分,与其他神经成分易于区别。Müller细胞近巩膜侧的主干突起延伸到视杆与视锥细胞的内节与胞核交界处,并彼此相互连接形成外界膜,近玻璃体侧的突起末端形成圆锥形的终足,锥形的底部紧邻玻璃体,且在此处彼此相互连接形成内界膜。

关键词：中华大蟾蜍视网膜 Müller细胞

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Decision making module based on stochastic magnetic tunnel junctions

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Science China(Physics,Mechanics & Astronomy) 2025年第1期Mechanics & Astronomy) .卷 202-209页

作者： Yifan Miao Li zhao Yajun Zhang Zhe Yuan Center for Advanced Quantum Studies and Department of Physics Beijing Normal University Institute for Nanoelectric Devices and Quantum Computing Fudan University Interdisciplinary Center for Theoretical Physics and Information Sciences Fudan University

In biological neural systems, noise is ubiquitous but does not affect the correct decisions made in the complex cognitive ***-making in biological neural system is typically achieved by accumulating input information over a period of *** by recent developments in neurosciences, we design a decision-making module based on spintronic devices, utilizing superparamagnetic tunnel junctions as artificial neurons. The feasibility of this decision-making module is verified through circuit simulations. Taking a multi-layer perceptron as an example, the module significantly improves the accuracy of the perceptron in the handwritten digit recognition task. Furthermore, the spintronic decision-making module offers advantages over the conventional pooling methods, such as adaptive decision time, high performance and the absence of analog-to-digital conversion. The decision-making module is flexible to be integrated into artificial neural networks and provides a general yet effective solution to enhance performance against device noise.

关键词： neuromorphic computing spintronics magnetic tunnel junction neural networks

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A Generative Model-Based Network Framework for Ecological Data Reconstruction

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Computers, Materials & Continua 2025年第1期82卷 929-948页

作者： Shuqiao Liu zhao Zhang Hongyan Zhou Xuebo Chen School of Electronic and Information Engineering University of Science and Technology LiaoningAnshan114051China School of Computer Science and Software Engineering University of Science and Technology LiaoningAnshan114051China

This study examines the effectiveness of artificial intelligence techniques in generating high-quality environmental data for species introductory site selection *** Strengths,Weaknesses,Opportunities,Threats(SWOT)analysis data with Variation Autoencoder(VAE)and Generative AdversarialNetwork(GAN)the network framework model(SAE-GAN),is proposed for environmental data *** model combines two popular generative models,GAN and VAE,to generate features conditional on categorical data embedding after SWOT *** model is capable of generating features that resemble real feature distributions and adding sample factors to more accurately track individual sample *** data is used to retain more semantic information to generate *** model was applied to species in Southern California,USA,citing SWOT analysis data to train the *** show that the model is capable of integrating data from more comprehensive analyses than traditional methods and generating high-quality reconstructed data from them,effectively solving the problem of insufficient data collection in development *** model is further validated by the Technique for Order Preference by Similarity to an Ideal Solution(TOPSIS)classification assessment commonly used in the environmental data *** study provides a reliable and rich source of training data for species introduction site selection systems and makes a significant contribution to ecological and sustainable development.

关键词： Convolutional Neural Network(CNN) VAE GAN TOPSIS data reconstruction

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IDSSCNN-XgBoost:Improved Dual-Stream Shallow Convolutional Neural Network Based on Extreme Gradient Boosting Algorithm for Micro Expression Recognition

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Computers, Materials & Continua 2025年第1期82卷 729-749页

作者： Adnan Ahmad zhao Li Irfan Tariq Zhengran He School of Information Science and Engineering Southeast UniversityNanjing210016China

Micro-expressions(ME)recognition is a complex task that requires advanced techniques to extract informative features fromfacial *** deep neural networks(DNNs)with convolutional structures have been ***,unlike DNNs,shallow convolutional neural networks often outperform deeper models in mitigating overfitting,particularly with small ***,many of these methods rely on a single feature for recognition,resulting in an insufficient ability to extract highly effective *** address this limitation,in this paper,an Improved Dual-stream Shallow Convolutional Neural Network based on an Extreme Gradient Boosting Algorithm(IDSSCNN-XgBoost)is introduced for ME *** proposed method utilizes a dual-stream architecture where motion vectors(temporal features)are extracted using Optical Flow TV-L1 and amplify subtle changes(spatial features)via EulerianVideoMagnification(EVM).These features are processed by IDSSCNN,with an attention mechanism applied to refine the extracted effective *** outputs are then fused,concatenated,and classified using the XgBoost *** comprehensive approach significantly improves recognition accuracy by leveraging the strengths of both temporal and spatial information,supported by the robust classification power of *** proposed method is evaluated on three publicly available ME databases named Chinese Academy of Sciences Micro-expression Database(CASMEII),Spontaneous Micro-Expression Database(SMICHS),and Spontaneous Actions and Micro-Movements(SAMM).Experimental results indicate that the proposed model can achieve outstanding results compared to recent *** accuracy results are 79.01%,69.22%,and 68.99%on CASMEII,SMIC-HS,and SAMM,and the F1-score are 75.47%,68.91%,and 63.84%,*** proposed method has the advantage of operational efficiency and less computational time.

关键词： ME recognition dual stream shallow convolutional neural network euler video magnification TV-L1 XgBoost

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“北芪五加颗粒”对鸡的安全性试验

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中国家禽 2019年第13期41卷 56-58页

作者：赵留涛陈五常袁之润魏红艳韩志霞吴春丽郑州大学药学院河南郑州450001 商丘爱己爱牧生物科技股份有限公司河南商丘476300 郑州爱己爱牧生物技术有限公司河南郑州450001 郑州市新型兽药制剂创新重点实验室河南郑州450001

依据兽药研究技术指导原则,开展"北芪五加颗粒"对靶动物鸡的安全性研究,为其临床应用的安全性提供数据资料。按照"北芪五加颗粒"临床推荐剂量的1、3、5倍饮水给药,连续7 d,用药前后,逐只称重。试验结束后采集血液和组织器官,进行血常规... 详细信息

依据兽药研究技术指导原则,开展"北芪五加颗粒"对靶动物鸡的安全性研究,为其临床应用的安全性提供数据资料。按照"北芪五加颗粒"临床推荐剂量的1、3、5倍饮水给药,连续7 d,用药前后,逐只称重。试验结束后采集血液和组织器官,进行血常规、血液生化指标、脏器指数及病理组织学观察。结果表明:与对照组相比,各给药组鸡只的体重、血常规、血液生化及脏器指数等指标差异均不显著(P>0.05),各组织器官未见明显的病理组织学变化。说明"北芪五加颗粒"饮水给药对靶动物鸡是安全的。

关键词： “北芪五加颗粒” 安全性鸡

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Dual‑Donor‑Induced Crystallinity Modulation Enables 19.23% Efficiency Organic Solar Cells

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Nano-Micro Letters 2025年第3期17卷 376-388页

作者： Anhai Liang Yuqing Sun Sein Chung Jiyeong Shin Kangbo Sun Chaofeng Zhu Jingjing zhao Zhenmin zhao Yufei Zhong Guangye Zhang Kilwon Cho Zhipeng Kan Center On Nanoenergy Research Institute of Science and Technology for Carbon Peak&NeutralitySchool of Physical Science&TechnologyGuangxi UniversityNanning 530004People’s Republic of China Department of Chemical Engineering Pohang University of Science and TechnologyPohang 37673South Korea College of New Materials and New Energies Shenzhen Technology UniversityShenzhen 518118People’s Republic of China Zhejiang Engineering Research Center for Fabrication and Application of Advanced Photovoltaic Materials School of Materials Science and EngineeringNingboTech UniversityNingbo 315100People’s Republic of China State Key Laboratory of Featured Metal Materials and Life-Cycle Safety for Composite Structures Nanning 530004People’s Republic of China

Trap-assisted charge recombination is one of the primary limitationsof restricting the performance of organic solar cells. However, effectivelyreducing the presence of traps in the photoactive layer remains ***, wide bandgap polymer donor PTzBI-dF is demonstrated as an effectivemodulator for enhancing the crystallinity of the bulk heterojunction active layerscomposed of D18 derivatives blended with Y6, leading to dense and orderedmolecular packings, and thus, improves photoluminescence quenching *** a result, the photovoltaic devices exhibit reduced trap-assisted charge recombinationlosses, achieving an optimized power conversion efficiency of over 19%.Besides the efficiency enhancement, the devices comprised of PTzBI-dF as athird component simultaneously attain decreased current leakage, improved chargecarrier mobilities, and suppressed bimolecular charge recombination, leading toreduced energy losses. The advanced crystalline structures induced by PTzBI-dFand its characteristics, such as well-aligned energy level, and complementaryabsorption spectra, are ascribed to the promising performance *** findings suggest that donor phase engineering is a feasible approach to tuning the molecular packings in the active layer, providingguidelines for designing effective morphology modulators for high-performance organic solar cells.

关键词： Trap-assisted charge recombination Photoluminescence Miscibility Current leakage Power conversion efficiency

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Fatigue Strength Analysis of Dissimilar Aluminum Alloy TIG Welds

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Journal of Wuhan University of Technology(Materials Science) 2025年第1期40卷 265-274页

作者： LIAO Xiangyun WANG Ruijie LIU Guoshou zhao Pinglin Faculty of Mechanical and Electrical Engineering Kunming University of Science and TechnologyKunming 650500China Faculty of Civil Engineering and Mechanics Kunming University of Science and TechnologyKunming 650500China

The constant amplitude loading fatigue tests were carried out on the 6061/7075 aluminum alloy TIG fillet welded lap specimens in this study,and the weld seam cross-section hardness was *** experimental results show that most specimens mainly failed at the 7075 side weld toes even though the base material tensile strength of 7075 is higher than that of *** maximum stress-strain concentration in the two finite element models is located at the 7075 side weld toe,which is basically consistent with the actual fracture *** weld zone on the 7075 side experiences severe material softening,with a large ***,the Vickers hardness value on the 6061 side negligibly changes and fluctuates around 70 *** obvious defects are found on the fatigue fracture,but a large number of secondary cracks *** germinate from the weld toe and propagate in the direction of the plate *** reinforcement has a serious impact on fatigue *** life will decrease exponentially as the weld reinforcement increases under low *** is found that the notch stress method can give a better fatigue life prediction for TIG weldments,and the errors of the predicted results are within the range of two factors,while the prediction accuracy decreases under low *** equivalent structural stress method can also be used for fatigue life prediction of TIG weldments,but the errors of prediction results are within the range of three factors,and the accuracy decreases under high stress.

关键词： TIG welding notch stress method equivalent structural stress method fatigue life finite element analysis

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