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A security scheme for intelligent substation communications considering real-time performance

Journal of Modern Power Systems and Clean Energy 2019年第4期7卷 948-961页

作者： Jie ZHANG Jun’e LI Xiong CHEN Ming NI Ting WANG Jianbo LUO Key Laboratory of Aerospace Information Security and Trusted Computing Ministry of EducationSchool of Cyber Science and EngineeringWuhan UniversityWuhan 430072China NARI Group Corporation(State Grid Electric Power Research Institute) Nanjing 211106China NARI Technology Co.Ltd. Nanjing 211106China State Key Laboratory of Smart Grid Protection and Control Nanjing 211106China

Tampering,forgery and theft of the measurement and control messages in a smart grid could cause one breakdown in the power ***,no security measures are employed for communications in intelligent *** services in an intelligent substation have high demands for real-time performance,which must be considered when deploying security *** paper studies the security requirements of communication services in intelligent substations,analyzes the security capabilities and shortages of IEC 62351,and proposes a novel security scheme for intelligent substation *** security scheme covers internal and telecontrol communications,in which the real-time performance of each security measure is *** this scheme,certificateless public key cryptography(CLPKC)is used to avoid the latency of certificate exchange in certificate-based cryptosystem and the problem of key escrow in identity-based cryptosystem;the security measures of generic object-oriented substation event,sampled measure value and manufacturing message specification in IEC 62351 are improved to meet the real-time requirements of the messages as well as to provide new security features to resist repudiation and replay attacks;and the security at transport layer is modified to fit CLPKC,which implements mutual authentication by exchanging ***,a deployment of CLPKC in an intelligent substation is *** also evaluate the security properties of the scheme and analyze the end-to-end delays of secured services by combining theoretical calculation and simulation in this *** results indicate that the proposed scheme meets the requirements of security and real-time performance of communications in intelligent substations.

关键词： Intelligent substation Security measures Certificateless public key cryptography(CLPKC) Real-time communication IEC 62351

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Knowledge-based multi-spectral pixel level fusion for surveillance

Knowledge-based multi-spectral pixel level fusion for survei...

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International Joint Conference on Neural Networks 2006, IJCNN '06

作者： Yunqian, Ma Rojicek, Jiri Beran, Zdenek Kukal, Jaromir Bazakos, Mike IEEE Honeywell Labs. 3660 Technology Drive Minneapolis MN 55418 United States Honeywell Prague Laboratory Pod vodarenskou vezi4 CZ-18208 Prague Czech Republic Department of Computing and Control Engineering Faculty of Chemical Engineering Institute of Chemical Technology Prague

ISBN: (纸本)0780394909

Multi- Spectral Fusion focused on the task of image enhancement by processing raw data collected at various electromagnetic bands via passive sensors. Passive spectral sensors collect information about the scene based on the inherently reflected or emitted energy of the scene and is represented by spectral distributions and intensities. These systems can be designed so that they provide collocated information through common optics or other means (algorithms). This paper addresses the issue of Multi-Spectral Pixel-Level Fusion to enhance the visual quality of the "combined" (fused) image data as compared to that of each single spectral band image data. We propose a Knowledgebased Fusion methodology. We also make the implicit assumption that visually superior image data are also better image data for processing by most types of algorithms © 2006 IEEE.

关键词： Space surveillance

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Automatic Construction of Callback Model for Android Application

Automatic Construction of Callback Model for Android Applica...

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IEEE International Conference on engineering of Complex Computer Systems

作者： Chenkai Guo Quanqi Ye Naipeng Dong Guangdong Bai Jin Song Dong Jing Xu College of Computer and Control Engineering Nankai University School of Computing National university of of Singapore Singapore Institute of Technology

ISBN: (纸本)9781509055289

The heavy use of event-callback mechanism in frameworks like Android causes challenges for static analysis. Modelling of callback mechanisms for Android applications (app for short) is becoming a major method to address such challenges. In this work, we aim to construct a generic callback-related model that supports path-sensitive analysis. We consider three unresolved challenges in the existing modelling approaches: 1) building connections between different components; 2) identifying path-sensitive conditions; 3) handling the system-driven callbacks and fine-grained lifecycle callbacks. We propose algorithms for constructing a generic path-sensitive callback model and present a prototype model constructor, AndroChecker, to validate our approach. We evaluate 20 real-world apps using AndroChecker. The evaluation result shows that our method and tool have a strong capability in modelling path conditions and inter-component invocations.

关键词： Registers Analytical models Erbium Androids Humanoid robots Smart phones Algorithm design and analysis

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Safelet implementation technologies: Java vs. Juice

Safelet implementation technologies: Java vs. Juice

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IEEE/AFCEA EUROCOMM Information Systems for Enhanced Public Safety and Security

作者： A. Pakstas I. Shagaev School of Computing Engineering and Technology University of Sunderland UK Institute of Control Sciences Russian Academy of Science Russia

A concept of dynamic safety (CoDySa) has been developed primarily targeting the improvement of aircraft safety. CoDySa principles are based on an analysis of the operating cycle of aircraft. Implementation of CoDySa in practice presumes completing steps to modernize the existing system. The further development of the CoDySa principles are its ground-to-air communication architecture. Possibilities to upload safety-enhancing software components (safelets) have been proposed together with scenarios of their use. These safelets can help a pilot in certain situations. This paper is devoted to software development technologies which can be chosen to implement uploadable safelets. Two main candidates are compared, namely Java and Juice/Oberon. Issues such as code effectiveness and safety are emphasized. Juice/Oberon has been recognized as a better candidate for implementation of safelets.

关键词： Java Air safety Aerospace electronics Printers Vehicle dynamics Aircraft propulsion Vehicle safety Space vehicles Air traffic control Humans

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Improvement of a fixed point transformations and svd-based adaptive controller

Improvement of a fixed point transformations and svd-based a...

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9th International Symposium of Hungarian Researchers on Computational Intelligence and Informatics, CINTI 2008

作者： Tar, József K. Rudas, Imre J. Bitó, János F. Machado, José A. Tenreiro Kozlowski, Krzysztof R. Institute of Intelligent Engineering Systems Budapest Tech Bécsi út 96/B H-1034 Budapest Hungary Department of Electrotechnical Engineering Institute of Engineering of Porto Rua Dr. Antonio Bernardino de Almeida 4200-072 Porto Portugal Control and Systems Engineering Computing Science and Management Poznan University of Technology ul. Piotrowo 3a 60-965 Poznan Poland

In this paper some refinement of a novel control approach is reported that fits to the "traditional line of thinking" according to which in the most practical cases neither very precise, nor even complete system model is needed for obtaining precise control for dynamical systems. The validity of this statement is briefly pointed out in the most popular approaches as the main idea of the "Robust Sliding Mode / Variable Structure controllers", in the Adaptive Inverse Dynamics and in the Slotine-Li Adaptive controllers based on Lyapunov's 2nd Method, and in a recently published problem tackling using the simple geometric interpretation of the Singular Value Decomposition (SVD). In the present approach the originally proposed convergent, iterative Cauchy sequences are nonlinearly moderated to adaptively control a coupled nonlinear system, the cart plus double pendulum serving as popular paradigm of dynamicall not very well conditioned systems. It is shown that the proposed moderation removes the small sharp fluctuation in the control torque that inherently belonged to the original solution without significantly degrading the control quality. This statement is substantiated by simulation results.

关键词： Singular value decomposition

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Semi-independent Convolution for Image Inpainting 50

Semi-independent Convolution for Image Inpainting

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50th Annual Conference of the IEEE Industrial Electronics Society, IECON 2024

作者： Huang, Wenli Deng, Ye Xin, Xiaomeng Zhao, Zhihong He, Jinbao Wang, Jinjun School of Electronic and Information Engineering Ningbo University of Technology Ningbo China School of Computing and Artificial Intelligence Southwestern University of Finance and Economics Chengdu China Institute of Artificial Intelligence and Robotic Xi’an Jiaotong University Xi’an China Research Institute of Intelligent Control and Systems Harbin Institute of Technology Harbin China School of Electronics and Information Engineering Ningbo University of Technology Ningbo China

ISBN: (纸本)9781665464543

In typical image inpainting tasks, the locations and shapes of damaged or masked areas are often random and irregular. Vanilla convolutions, commonly employed in learning-based inpainting models, treat all spatial features as valid and share parameters across different regions. This approach can struggle with irregular damage patterns, leading to inpainted results that may suffer from color discrepancies and blurriness. In this paper, we introduce a novel operator known as Semi-Independent Convolution (SIConv) to tackle this challenge. The proposed SIConv, on top of the regular convolution with shared weights, also introduces dynamic terms that assign their own independent weights to each part of the image, and the overall computation is formulated as a shared convolution parameter with an additional term to describe the local structure. Qualitative and quantitative experiments demonstrate that our method outperforms the state-of-the-art, yielding clearer, more coherent, and visually convincing inpainting results. © 2024 IEEE.

关键词： convolution Image inpainting semi-independent

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Nonmonotonic propositional logic

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Frontiers of Computer Science 2021年第3期15卷 215-216页

作者： Wei LI Yuefei SUI Yuhui WANG State Key Laboratory of Software Development Environment Beihang UniversityBeijing 100191China Key Laboratory of Intelligent Information Processing Institute of Computing TechnologyChinese Academy of SciencesBeijing 100190China School of Computer and Control Engineering University of Chinese Academy of SciencesBeijing 100049China Information Technology Center China Reinsurance(Group)CorporationBeijing 100033China

Propositional logic[1]is basic,based on which other logics are *** deduction system for propositional logic is *** logics are a class of logics which deduction systems are *** ones are default logic[2,3],R-calculus[4]... 详细信息

关键词： default propositional Nonmonotonic

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A novel self-adaptive fault-tolerant mechanism and its application for a dynamic pervasive computing environment

A novel self-adaptive fault-tolerant mechanism and its appli...

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作者： Cai, Haibin Peng, Chao Jiang, Linhua Zhang, Yue Shanghai Key Laboratory of Trustworthy Computing Beijing Jiaotong University Beijing China State Key Laboratory of Rail Traffic Control and Safety Beijing Jiaotong University Beijing China Software Engineering Institute East China Normal University Shanghai China

ISBN: (纸本)9780769546698

In pervasive computing system, the increasing dynamic and complexity of software and hardware resources and frequentative interaction among function components make fault-tolerant design very challenging. In this paper, we propose a novel self-adaptive fault-tolerant mechanism for a dynamic pervasive computing environment such as mobile ad hoc network. In our approach, the self-adaptive fault-tolerant mechanism is dynamically built according to various types of detected faults based on continuous monitoring and analysis of the component states. We put forward the architecture of fault-tolerant system and the policy-based fault-tolerant scheme, which adopts three-dimensional array of core features to capture spatial and temporal variability and the Event-Condition-Action rules. The mentioned mechanism has been designed and implemented as self-adaptive fault-tolerant middleware, shortly called SAFTM, on a preliminary prototype for a dynamic pervasive computing environment such as mobile ad hoc network. We have performed the experiments to evaluate the efficiency of the fault-tolerant mechanism. The results of the experiments show that the performance of the self-adaptive fault tolerant mechanism is realistic. © 2012 IEEE.

关键词： Dynamics

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UAV Path Planning from Human Demonstrations Using Inverse Reinforcement Learning

UAV Path Planning from Human Demonstrations Using Inverse R...

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International Conference on Guidance, Navigation and control, ICGNC 2022

作者： Xu, Zhiang Dong, Jin Hua, Yongzhao Dong, Xiwang Li, Qingdong Ren, Zhang School of Automation Science and Electrical Engineering Science and Technology on Aircraft Control Laboratory Beihang University Beijing100191 China Institute of Artificial Intelligence Beihang University Beijing100191 China Beijing Academy of Blockchain and Edge Computing Beijing100086 China

ISBN: (纸本)9789811966125

In UAV path planning tasks, classical algorithms can only solve the tasks where environment is knowable and can be changed into mathematical model. For the tasks with unknown environment information is difficult to solve. However, such tasks can be easily solved by human. In this paper, we first bulid a UAV path planning environment and train the agent with deep reinforcement learning as human demonstration. Then, we use inverse reinforcement learning algorithm and processed human demonstrations to learn human policy. Finally, we test the trained policy in path planning tasks to verify the feasibility. © 2023, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.

关键词： Unmanned aerial vehicles (UAV)

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SOM Neural Network Based Gaussian Mixture PHD Algorithm for Multi-Sensor Multi-Target Tracking

SOM Neural Network Based Gaussian Mixture PHD Algorithm for ...

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International Conference on Guidance, Navigation and control, ICGNC 2022

作者： Zhang, Yujie Zheng, Hongwei Zhang, Zheng Yu, Jianglong Hua, Yongzhao Dong, Xiwang Ren, Zhang Institute of Artificial Intelligence Beihang University Beijing100191 China School of Automation Science and Electrical Engineering Science and Technology on Aircraft Control Laboratory Beihang University Beijing100191 China Beijing Academy of Blockchain and Edge Computing Beijing100086 China

ISBN: (纸本)9789811966125

In the multi-sensor multi-target tracking (MSMTT) problem, the matching of the measurements and the targets will generate a huge computational burden, resulting in an unsatisfactory real-time performance of the maneuvering targets tracking. In order to reduce the computational burden, this paper proposes a self-organizing feature map (SOM) neural network based Gaussian mixture probability hypothesis density algorithm (SOM-GMPHD). Firstly, a distributed filtering MSMTT algorithm based on SOM neural network is proposed. The distributed SOM-GMPHD algorithm (DSOM-GMPHD) has two fusion steps. Secondly, to further reduce the computational complexity, a centralized SOM-GMPHD algorithm (CSOM-GMPHD) with only one-step fusion is proposed. The computational complexity analysis of the existing MSMTT algorithms (DGMPHD and CGMPHD) and the proposed SOM-GMPHD algorithms are carried out in this paper. Finally, the effect of the proposed algorithms is evaluated in the simulation experiment. © 2023, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.

关键词： Self organizing maps

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