检索结果-内蒙古大学图书馆

FMSA:a meta-learning framework-based fast model stealing attack technique against intelligent network intrusion detection systems

引用

Cybersecurity 2024年第1期7卷 110-121页

作者： Kaisheng Fan Weizhe Zhang Guangrui Liu Hui He School of Cyberspace Science Harbin Institute of TechnologyHarbin 150001China Department of New Networks Peng Cheng LaboratoryShenzhen 518055GuangdongChina

Intrusion detection systems are increasingly using machine *** machine learning has shown excellent performance in identifying malicious traffic,it may increase the risk of privacy *** paper focuses on imple-menting a model stealing attack on intrusion detection *** model stealing attacks are hard to imple-ment in practical network environments,as they either need private data of the victim dataset or frequent access to the victim *** this paper,we propose a novel solution called Fast Model Stealing Attack(FMSA)to address the problem in the field of model stealing *** also highlight the risks of using ML-NIDS in network ***,meta-learning frameworks are introduced into the model stealing algorithm to clone the victim model in a black-box ***,the number of accesses to the target model is used as an optimization term,resulting in minimal queries to achieve model ***,adversarial training is used to simulate the data distribution of the target model and achieve the recovery of privacy *** experiments on multiple public datasets,compared to existing state-of-the-art algorithms,FMSA reduces the number of accesses to the target model and improves the accuracy of the clone model on the test dataset to 88.9%and the similarity with the target model to 90.1%.We can demonstrate the successful execution of model stealing attacks on the ML-NIDS system even with protective measures in place to limit the number of anomalous queries.

关键词： AI security Model stealing attack Network intrusion detection Meta learning

来源：评论

学校读者我要写书评

暂无评论

Sulfur vacancies-induced“Electron Bridge”in Ni_(4)Mo/Sv-Zn_(x)Cd_(1-x)S regulates electron transfer for efficient H_(2)-releasing photocatalysis

引用

Journal of Energy Chemistry 2023年第4期79卷 64-71页

作者： Xin Zhang Manyi Gao Longyu Qiu Jie Sheng Weiwei Yang Yongsheng Yu State Key Laboratory of Urban Water Resource and Environment School of Chemistry and Chemical EngineeringHarbin Institute of TechnologyHarbin 150001HeilongjiangChina Laboratory for Space Environment and Physical Science Research Center of Basic Space ScienceHarbin Institute of TechnologyHarbin 150001HeilongjiangChina

Despite the existence of plentiful photocatalyst heterojunctions,their separation efficiency and charge flow precision remain low on account of lacking interfacial ***,through a defect-induced heterojunction constructing strategy,Ni4Mo alloys were in-situ grown on the unsaturated coordinated sulfur atoms of sulfur vacancies-rich ZCS(Sv-ZCS)via interfacial Ni-S covalent *** experimental and theoretical results reveal that these unsaturated sulfur atoms induced by sulfur vacancies vastly facilitate to anchor more Ni-Mo nanoparticles and form abundant Ni-S covalent bonds,meanwhile,these sulfur vacancies could form dual internal electric field(IEF)and work with Ni-S covalent bonds as“Electron Bridge”to further accelerate photoelectrons transfer,as well as promote the activation of water molecules and the desorption of hydrogen ***,the optimized Ni_(4)Mo/Sv-ZCS composite achieves an improved photocatalytic hydrogen evolution(PHE)rate of 94.69 mmol h^(-1)g^(-1)without an evident decrease after 6 cycles of photocatalytic tests,which is 21.2 and 1.94 times higher than those of Pt/ZCS and Ni_(4)Mo/ZCS,*** tactic opens a new way for optimizing Zn_(x)Cd_(1-x)S-based heterojunctions by constructing sulfur vacancies and covalent bonds as“Electron Bridge”to enhance the activity of PHE.

关键词： Ni_(4)Mo Sulfur vacancies-rich Zn_(x)Cd_(1-x)S Electron Bridge Photocatalytic hydrogen evolution

来源：评论

学校读者我要写书评

暂无评论

PointSmile: point self-supervised learning via curriculum mutual information

引用

science China(Information sciences) 2024年第11期67卷 121-135页

作者： Xin LI Mingqiang WEI Songcan CHEN School of Computer Science and Technology Nanjing University of Aeronautics and Astronautics Shenzhen Research Institute Nanjing University of Aeronautics and Astronautics

Self-supervised learning is attracting significant attention from researchers in the point cloud processing field. However, due to the natural sparsity and irregularity of point clouds, effectively extracting discriminative and transferable features for efficient training on downstream tasks remains an unsolved challenge. Consequently, we propose PointSmile, a reconstruction-free self-supervised learning paradigm by maximizing curriculum mutual information(CMI) across the replicas of point cloud objects. From the perspective of how-and-what-to-learn, PointSmile is designed to imitate human curriculum learning, i.e.,starting with easier topics in a curriculum and gradually progressing to learning more complex topics in the curriculum. To solve “how-to-learn”, we introduce curriculum data augmentation(CDA) of point *** encourages PointSmile to follow a learning path that starts from learning easy data samples and progresses to learning hard data samples, such that the latent space can be dynamically affected to create better embeddings. To solve “what-to-learn”, we propose maximizing both feature-and class-wise CMI to better extract discriminative features of point clouds. Unlike most existing methods, PointSmile does not require a pretext task or cross-modal data to yield rich latent representations; additionally, it can be easily transferred to various backbones. We demonstrate the effectiveness and robustness of PointSmile in downstream tasks such as object classification and segmentation. The study results show that PointSmile outperforms existing self-supervised methods and compares favorably with popular fully supervised methods on various standard architectures. The code is available at https://***/theaalee/PointSmile.

关键词： PointSmile self-supervised learning curriculum mutual information point cloud representation learning

来源：评论

学校读者我要写书评

暂无评论

Prescribed-Time Three-Dimensional Guidance for Maneuvering Targets with Field-of-View and Approach Angle Constraints

引用

IEEE Transactions on Aerospace and Electronic Systems 2025年第3期61卷 5996-6010页

作者： Kang, Honglong Wang, Pengyu Song, Shenmin Fonod, Robert Harbin Institute of Technology Center for Control Theory and Guidance Technology Harbin150001 China Harbin Institute of Technology Department of Control Science and Engineering Harbin150001 China Ecole Polytechnique Fédérale de Lausanne School of Architecture Civil and Environmental Engineering LausanneCH-1015 Switzerland

This paper presents a three-dimensional (3D) guidance law for homing missiles to intercept maneuvering targets, while ensuring a desired final approach angle and satisfying field-of-view (FOV) constraints. First, a line-of-sight (LOS) vector shaping method is introduced in the range domain. The desired approach angle and FOV constraint can be satisfied by precisely tracking a specified LOS vector profile. Then, a feedback guidance law is designed using a prescribed-time control technique for nullifying the LOS tracking errors. This guidance law employs an extended state observer to estimate and compensate for unknown target maneuvers, with a rigorous analysis conducted to ensure the stability of the entire system. Unlike existing studies, the proposed guidance law does not require linearization procedures and switching logic, which avoids discontinuous guidance command and facilitates practical implementation. Finally, extensive numerical simulations and comparison studies validate the effectiveness, robustness, and superiority of the proposed method. © 1965-2011 IEEE.

关键词： Guided missiles

来源：评论

学校读者我要写书评

暂无评论

A NEW PART-ORIENTED TEST EQUIPMENT FOR EVALUATING THE MECHANICAL CHARACTERISTICS OF COPPER ALLOY SPRING MATERIALS 14

A NEW PART-ORIENTED TEST EQUIPMENT FOR EVALUATING THE MECHAN...

引用

14th International Conference on Quality, Reliability, Risk, Maintenance, and Safety Engineering, QR2MSE 2024

作者： Sun, Lizhi Zhang, Chao Han, Yicheng Ren, Wanbin School of Electrical Engineering and Automation Harbin Institute of Technology Harbin China School of Instrumentation Science and Engineering Harbin Institute of Technology Harbin China

ISBN: (纸本)9781837242672

Copper alloy spring materials are widely used in electromechanical components for carrying mechanical load and current load. The mechanical characteristics of such materials are closely related to the reliability and serviceability of components used in harsh environment. In this paper, a new automated test equipment for evaluating the mechanical characteristics of real part within the component is developed. The stress relaxation test and mechanical fatigue test could be carried out individually. Furthermore, the effects of temperature and mechanical load on the degradation behavior was demonstrated, without the need for a whole component level testing. © The Institution of Engineering & technology 2024.

关键词： Copper alloys

来源：评论

学校读者我要写书评

暂无评论

Compositional design and phase formation capability of high-entropy rare-earth disilicates from machine learning and decision fusion

引用

npj Computational Materials 2024年第1期10卷 2257-2271页

作者： Yun Fan Yuelei Bai Qian Li Zhiyao Lu Dong Chen Yuchen Liu Wenxian Li Bin Liu National Key Laboratory of Science and Technology on Advanced Composites in Special Environments and Center for Composite Materials and Structure Harbin Institute of TechnologyHarbin 150080China School of Materials Science and Engineering Shanghai UniversityShanghai 200444China National Engineering Research Center for Magnesium Alloy Chongqing UniversityChongqing 400044China School of Electronics and Information Engineering Harbin Institute of TechnologyHarbin 150080China UNSW Materials&Manufacturing Futures Institute School of Materials Science and EngineeringUniversity of New South WalesSydney NSW 2052Australia Institute of Coating Technology for Hydrogen Gas Turbines Liaoning Academy of MaterialsShenyang 110004China

A key strategy for designing environmental barrier coatings is to incorporate multiple rare-earth(RE)components intoβ-andγ-RE_(2)Si_(2)O_(7)to achieve multifunctional performance ***,the polymorphic phase presents s... 详细信息

关键词： rare earth silicate

来源：评论

学校读者我要写书评

暂无评论

Plate-Like Flexible Spacecraft Modeling and Distribution of Control Moment Gyroscopes

引用

Space(science & technology) 2023年第1期3卷 464-477页

作者： Jingyu Guo Chengfei Yue Shiyuan Jia Xibin Cao Research Center of Satellite Technology Harbin Institute of TechnologyHarbinChina Institute of Space Science and Applied Technology Harbin Institute of TechnologyShenzhenShenzhenChina School of Automation Beijing University of Posts and TelecommunicationsBeijingChina

This study investigates the optimization configuration problem of control moment gyroscopes for flexible vibration suppression of large space ***,the structural dynamic model of an unconstrained plate-like flexible spacecraft with control moment gyroscopes is established using the Lagrangian method and the finite element ***,an optimization problem is established with the positions of control moment gyroscope array as variables and the linear quadratic index of mechanical energy during vibration process as the objective ***,an improved gray wolf optimizer is used to solve the optimization *** optimization results show that the control moment gyroscopes should be primarily placed on the corners of the spacecraft in a symmetrical ***,the priority of control moment gyroscope installation positions was studied using topological *** results indicate that the control moment gyroscopes should be primarily installed on the corners,followed by the central positions,and then gradually expanded outward.

关键词： function positions corners

来源：评论

学校读者我要写书评

暂无评论

Adaptive Multi-Information Fusion Model for Enhanced Anomaly Detection 24

Adaptive Multi-Information Fusion Model for Enhanced Anomaly...

引用

3rd International Conference on computer, Artificial Intelligence and Control Engineering, CAICE 2024

作者： Zhang, Junjie Ding, Yuxin Computer Science and Technology Harbin Institute of Technology Nanshan Guangdong Shenzhen China

ISBN: (纸本)9798400716942

Graph Neural Networks (GNNs) have gained increasing popularity for graph anomaly detection tasks in recent years. However, existing research has revealed a significant issue: they learn node representations through the message aggregation mechanism, essentially acting as low-pass filters. This approach has limitations in handling anomalous nodes, as it tends to overly smooth out the significant feature differences between anomalous nodes and their neighbors during the message passing process, resulting in a loss of anomalous characteristics. To overcome this limitation, we propose a novel adaptive multi-information fusion model. In this model, we introduce a graph deviation network layer specifically designed to capture the differential information between nodes, enhancing the identification of anomalous behaviors. By adaptively fusing multiple sources of information, the model can better represent nodes. As demonstrated by the experimental results on two widely used real-world datasets, our model showcases a significant performance improvement compared to several state-of-the-art baseline methods. © 2024 ACM.

关键词： anomaly detection attributed networks GNN

来源：评论

学校读者我要写书评

暂无评论

Discovery and structural mechanism of DNA endonucleases guided by RAGATH-18-derived RNAs

引用

细胞研究（英文版） 2024年第5期34卷 370-385页

作者： Kuan Ren Fengxia Zhou Fan Zhang Mingyu Yin Yuwei Zhu Shouyu Wang Yan Chen Tengjin Huang Zixuan Wu Jiale He Anqi Zhang Changyou Guo Zhiwei Huang HIT Center for Life Sciences School of Life Science and TechnologyHarbin Institute of TechnologyHarbinHeilongjiangChina HIT Center for Life Sciences School of Life Science and TechnologyHarbin Institute of TechnologyHarbinHeilongjiangChina Westlake Center for Genome Editing Westlake Laboratory of Life Sciences and BiomedicineSchool of Life SciencesWestlake UniversityHangzhouZhejiangChina Westlake Center for Genome Editing Westlake Laboratory of Life Sciences and BiomedicineSchool of Life SciencesWestlake UniversityHangzhouZhejiangChina HIT Center for Life Sciences School of Life Science and TechnologyHarbin Institute of TechnologyHarbinHeilongjiangChina Westlake Center for Genome Editing Westlake Laboratory of Life Sciences and BiomedicineSchool of Life SciencesWestlake UniversityHangzhouZhejiangChina New Cornerstone Science Laboratory ShenzhenGuangdongChina

CRISPR-Cas systems and IS200/IS605 transposon-associated TnpBs have been utilized for the development of genome editing *** bioinformatics analysis and biochemical experiments,here we present a new family of RNA-guided DNA *** bioinformatics analysis initially identifies the stable co-occurrence of conserved RAGATH-18-derived RNAs(reRNAs)and their upstream IS607 TnpBs with an average length of 390 amino ***607 TnpBs form programmable DNases through interaction with *** discover the robust dsDNA interference activity of IS607 TnpB systems in bacteria and human *** characterization of the Firmicutes bacteria IS607 TnpB system(ISFba1 TnpB)reveals that its dsDNA cleavage activity is remarkably sensitive to single mismatches between the guide and target sequences in human *** findings demonstrate that a length of 20 nt in the guide sequence of reRNA achieves the highest DNA cleavage activity for ISFba1 TnpB.A cryo-EM structure of the ISFba1 TnpB effector protein bound by its cognate RAGATH-18 motif-containing reRNA and a dsDNA target reveals the mechanisms underlying reRNA recognition by ISFba1 TnpB,reRNA-guided dsDNA targeting,and the sensitivity of the ISFba1 TnpB system to base mismatches between the guide and target ***,this study identifies the IS607 TnpB family of compact and specific RNA-guided DNases with great potential for application in gene editing.

关键词： mechanism discovery rnas derived endonucleases guided ragath structural

来源：评论

学校读者我要写书评

暂无评论

Biologically inspired anthraquinone redox centers and biomass graphene for renewable colloidal gels toward ultrahigh-performance flexible micro-supercapacitors

引用

Journal of Materials science & technology 2023年第20期151卷 178-189页

作者： Tiansheng Wang Shunyou Hu Yuanyuan Hu Dong Wu Hao Wu Jinxu Huang Hao Wang Weiwei Zhao Wen Yu Mi Wang Jie Xu Jiaheng Zhang School of Materials Science and Engineering Harbin Institute of TechnologyHarbin 150001China Key Laboratory of Micro-systems and Micro-structures Manufacturing of Ministry of Education Harbin Institute of TechnologyHarbin 150001China National Innovation Center for Advanced Medical Devices Harbin Institute of TechnologyShenzhen 457001China Research Centre of Printed Flexible Electronics Harbin Institute of TechnologyShenzhen 518055China Sauvage Laboratory for Smart Materials School of Materials Science and EngineeringHarbin Institute of Technology(Shenzhen)ShenzhenGuangdong 518055China Department of Chemistry University of IdahoMoscowIdaho 83844-2343USA

Biomass carbon and small redox biomolecules are attractive materials for green,sustainable energy storage devices owing to their environmentally friendly,low-cost,scalable,and novel ***,most devices manufactured using these materials have low specific capacitance,poor cycle stability,short lifetime,complexity,and low precision of device ***,we report the directed self-assembly of mononuclear anthraquinone(MAQ)derivatives and porous lignin-based graphene oxide(PLGO)into a renewable colloidal gel through noncovalent *** self-assembled gel electrode materials exhibited high capacitance(484.8 F g^(−1) at a current density of 1 A g^(−1))and could be further printed as flexible micro-supercapacitors(FMSCs)with arbitrary patterns and a relatively high resolution on specific *** FMSCs exhibited excellent areal capacitance(43.6 mF cm^(−2)),energy and power densities(6.1μWh cm^(−2) and 50μW cm^(−2),respectively),and cycle stability(>10,000 cycles).Furthermore,the printed FMSCs and integrated FMSC arrays exhibited remarkable flexibility while maintaining a stable *** proposed approach can be applied to other quinone biomolecules and biomass-based carbon *** study provides a basis for fabricating green and sustainable energy storage device architectures with high capacitance,long-term cycling,high scalability,and high precision.

关键词： Biomass carbon Mononuclear anthraquinone Noncovalent interactions Renewable colloidal gel Flexible micro-supercapacitors

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：