检索结果-内蒙古大学图书馆

Stealthy attack detection and solution strategy for consensus-based distributed economic dispatch problem

INTERNATIONAL JOURNAL OF ELECTRICAL POWER & ENERGY SYSTEMS 2018年 103卷 233-246页

作者： Zhang, Wenming He, Xing Southwest Univ Coll Elect & Informat Engn Chongqing Key Lab Nonlinear Circuits & Intelligen Chongqing 400715 Peoples R China

Distributed system is efficient and scalable in modern power grid. However, a distributed system is so susceptible to attack. In this paper, we formulate consensus-based distributed economic problem under attacks, and the convergence of the algorithm under a realizable and general stealthy attack is proved. Then the expression of the convergence point is also provided. Furthermore, a strategy based on a defined observation network is proposed to detect whether the system is attacked by the false data injection to broadcast information. Consequently, the misbehaving agents are detected and removed, and the other agents can reach the optimal point under new optimal objective, the incremental cost and total generation cost can be decreased. The simulation studies not only validate the theoretical results but also show the effectiveness of proposed strategy.

关键词： Stealthy attack Consensus Detection algorithm Attack solution strategy

来源：评论

学校读者我要写书评

暂无评论

Second-order consensus of discrete-time multi-agent systems in directed networks with nonlinear dynamics via impulsive protocols

引用

NEUROCOMPUTING 2018年 286卷 51-57页

作者： Han, Yiyan Li, Chuandong Southwest Univ Chongqing Key Lab Nonlinear Circuits & Intelligen Coll Elect & Informat Engn Chongqing 400715 Peoples R China

In this paper, we discuss the second-order consensus problem of discrete-time multi-agent systems with fixed and switching topology. Impulsive protocols are introduced for such multi-agent systems with non-linear dynamics. The consensus problem of multi-agent systems is analyzed by algebraic graph theory and matrix theory, where a connection of impulsive control methods and network topologies is established. Our main results indicate that the second-order consensus of multi-agent systems can be achieved if the graphs of the topology are balanced and strongly connected under suitable conditions. Numerical simulations are presented to support the theoretical results. (C) 2018 Elsevier B.V. All rights reserved.

关键词： Impulsive protocols Discrete-time multi-agent systems Second-order consensus nonlinear dynamics

来源：评论

学校读者我要写书评

暂无评论

Convolution Kernel Operations on a Two-Dimensional Spin Memristor Cross Array

引用

SENSORS 2020年第21期20卷 6229.-6229.页

作者： Zhu, Saike Wang, Lidan Dong, Zhekang Duan, Shukai Southwest Univ Sch Elect Informat Engn Chongqing 400715 Peoples R China Chongqing Key Lab Nonlinear Circuits & Intelligen Chongqing 400715 Peoples R China Hangzhou Dianzi Univ Sch Elect Informat Hangzhou 310018 Peoples R China

In recent years, convolution operations often consume a lot of time and energy in deep learning algorithms, and convolution is usually used to remove noise or extract the edges of an image. However, under data-intensive conditions, frequent operations of the above algorithms will cause a significant memory/communication burden to the computing system. This paper proposes a circuit based on spin memristor cross array to solve the problems mentioned above. First, a logic switch based on spin memristors is proposed, which realizes the control of the memristor cross array. Secondly, a new type of spin memristor cross array and peripheral circuits is proposed, which realizes the multiplication and addition operation in the convolution operation and significantly alleviates the computational memory bottleneck. At last, the color image filtering and edge extraction simulation are carried out. By calculating the peak signal-to-noise ratio (PSNR) and structural similarity (SSIM) of the image result, the processing effects of different operators are compared, and the correctness of the circuit is verified.

关键词： spin memristor mask operation memristor switch memristor crossbar image processing

来源：评论

学校读者我要写书评

暂无评论

A new color image encryption scheme based on logistic map over the finite field Z_N

引用

MULTIMEDIA TOOLS AND APPLICATIONS 2018年第16期77卷 21803-21821页

作者： Yang, Bo Liao, Xiaofeng Southwest Univ Chongqing Key Lab Nonlinear Circuits & Intelligen Coll Elect & Informat Engn Chongqing 400715 Peoples R China

In recent years, various image encryption algorithms based on chaotic systems have been proposed where the chaotic maps always work over the real domain. However, the traditional chaotic map over the real domain has a disadvantage, i.e., the calculation complexity of the floating point number can be doubled when implementing the map in computer. This leads to a greatly serious drawback for practical application. To overcome this problem effectively, in this paper, we generalize the chaotic Logistic map to the finite field, and find that there exists an automorphic mapping between two Logistic maps with the different control parameters over the finite field Z(N). Moreover, we adopt the sequences generated by the automorphic mapping to design a color image encryption scheme and do simulation experiments. Security and performance analyzes also show that the proposed scheme has very good properties which provide a strong guarantee for the algorithm efficiency. Therefore, the proposed scheme is feasible for implementing image and data encryption.

关键词： Encryption scheme Chaotic systems Logistic map information security Finite field

来源：评论

学校读者我要写书评

暂无评论

Some properties of the Logistic map over the finite field and its application

引用

SIGNAL PROCESSING 2018年 153卷 231-242页

作者： Yang, Bo Liao, Xiaofeng Southwest Univ Coll Elect & Informat Engn Chongqing Key Lab Nonlinear Circuits & Intelligen Chongqing 400715 Peoples R China

The Logistic map is a classical chaotic system and has been used as a chaotic cipher in the real number field. This inevitably leads to the degradation of finite precision under the computer environment, and it also is very difficult to guarantee the security of the cryptosystem using the Logistic map over the real number field. To overcome these drawbacks, in this paper, we extend the Logistic map-3 to the finite field Z(3n), and give theoretical analysis about some period properties of the Logistic map-3 over Z(3n). Moreover, we discuss the control parameters which can change the behavior of the mapping, and also find that the maximum period can change with the control parameter. Furthermore, we analyze some characteristics including maximum period, generation time, NIST test, power spectrum, correlation property, phase diagram and Lyapunov exponent. Simulation results show that the period of Logistic map-3 over Z(3n) is longer than Logistic map-1 over Z(3n), and much longer than Logistic map-1 over Z(2n), and the same as Logistic map-2 over Z(3n). Simulation experiments also show that the Logistic map-3 over the finite field has some good features including non-periodic, random, noise-like properties, continuous spectrum, good correlation, well uniform distribution, controllable length of generated sequence, positive Lyapunov exponent, and good sequence generation speed. Therefore, we attempt to design a nonlinear transformation based key stream generator by using the Logistic map-3 over Z(3n), and apply to image encryption. The performance analyses including statistical analysis, Shannon entropy analysis, differential attack analysis, and speed analysis also show that our proposed method may be suitable for practical cryptographic application. (C) 2018 Published by Elsevier B.V.

关键词： Encryption Chaos Logistic map key stream generator Finite field

来源：评论

学校读者我要写书评

暂无评论

Distributed Event-triggered Containment Control for Discrete-time Multi-agent Systems

引用

INTERNATIONAL JOURNAL OF CONTROL AUTOMATION AND SYSTEMS 2018年第6期16卷 2727-2732页

作者： Tang, Zhaojun Li, Chuandong Southwest Univ Dept Elect & Informat Engn Chongqing Key Lab Nonlinear Circuits & Intelligen Chongqing Peoples R China Chongqing Univ Technol Sch Sci Chongqing Peoples R China Southwest Univ Dept Elect & Informat Engn Chongqing Key Lab Nonlinear Circuits & Intelligen Chongqing Peoples R China

This paper investigates the event-triggered containment control for discrete-time multi-agent systems. Event-triggered control strategies are employed in order to reduce the number of controller actuation updates for multi-agent systems with limited resources. It is assumed that each follower in the system updates its state only at some instants which are determined by the proposed event-triggered condition. Both centralized and decentralized event-triggered strategies are proposed to solve the containment control problem. Convergence analysis is given with the help of matrix theory and Lyapunov method, and it is showed that the proposed strategy does not exhibit Zeno behaviors. Numerical simulations are given to illustrate the effectiveness of the theoretical results.

关键词： Containment control discrete-time systems event-triggered control multi-agent systems

来源：评论

学校读者我要写书评

暂无评论

Low-BER communications in optical networks-on-chip using coding technology 2

Low-BER communications in optical networks-on-chip using cod...

引用

2nd Symposium on Novel Technology of X-Ray Imaging

作者： Fu, Lixia Xie, Yiyuan Song, Tingting Su, Ye Ye, Yichen Liu, Bocheng Southwest Univ Coll Elect & Informat Engn Chongqing Peoples R China Univ Elect Sci & Technol Chengdu Sch Optoelect Informat Chengdu Sichuan Peoples R China Chongqing Key Lab Nonlinear Circuits & Intelligen Chongqing Peoples R China

ISBN: (数字)9781510628274

ISBN: (纸本)9781510628274

The traditional optical networks-on-chip (ONoCs) communication systems is susceptible to crosstalk noise, especially the Wavelength Division Multiplexing (WDM) based ONoCs with nonlinear noise caused by four-wave mixing (FWM) effects. Crosstalk noise greatly reduces the performance and improves the bit error rate (BER) of the ONoCs. In this paper, a low BER communication system in ONoCs based on linear block codes is proposed. Firstly, we designed a all-optical linear block codes generator based on microring resonators(MRRs) to encode the information transmitted in the ONoCs before transmission. Secondly, a retransmission module is established that can resend the code groups that cannot be corrected. Combined with the error detection and error correction features of the linear block code, the BER of the communication in ONoCs can be effectively reduced. Finally, we verify the effectiveness of the proposed method through simulation. The simulation results show that compared with the traditional WDM-based ONoCs, applying the proposed system to ONoCs can greatly reduce the communication BER and effectively improve the communication performance of ONoCs.

关键词： ONoCs low BER communication system all-optical linear block codes generator retransmission module

来源：评论

学校读者我要写书评

暂无评论

2022 roadmap on neuromorphic devices and applications research in China

引用

NEUROMORPHIC COMPUTING AND ENGINEERING 2022年第4期2卷 042501-042501页

作者： Wan, Qing Wan, Changjin Wu, Huaqiang Yang, Yuchao Huang, Xiaohe Zhou, Peng Chen, Lin Wang, Tian-Yu Li, Yi Xue, Kan-Hao He, Yu-Hui Miao, Xiang-Shui Li, Xi Xie, Chenchen Chen, Houpeng Song, Zhitang Wang, Hong Hao, Yue Zhang, Junyao Huang, Jia Ren, Zheng Yu Zhu, Li Qiang Du, Jianyu Ge, Chen Liu, Yang Ding, Guanglong Zhou, Ye Han, Su-Ting Wang, Guosheng Yu, Xiao Chen, Bing Chu, Zhufei Wang, Lunyao Xia, Yinshui Mu, Chen Lin, Feng Chen, Chixiao Cheng, Bojun Xing, Yannan Zeng, Weitao Chen, Hong Yu, Lei Indiveri, Giacomo Qiao, Ning Nanjing Univ Sch Elect Sci & Engn Nanjing Peoples R China Tsinghua Univ Beijing Peoples R China Peking Univ Beijing Peoples R China Fudan Univ Sch Microelect State Key Lab ASIC & Syst Shanghai 200433 Peoples R China Huazhong Univ Sci & Technol Sch Integrated Circuits Sch Opt & Elect Informat Wuhan 430074 Peoples R China Hubei Yangtze Memory Labs Wuhan 430205 Peoples R China Chinese Acad Sci Shanghai Inst Microsyst & Informat Technol Shanghai Key Lab Nanofabricat Technol Memory Beijing Peoples R China Xidian Univ Sch Microelect Key Lab Wide Band Gap Semicond Technol Xian 710071 Peoples R China Tongji Univ Interdisciplinary Mat Res Ctr Frontiers Sci Ctr Intelligent Autonomous Syst Sch Mat Sci & Engn Shanghai 201804 Peoples R China Ningbo Univ Sch Phys Sci & Technol Ningbo 315211 Zhejiang Peoples R China Chinese Acad Sci Ningbo Inst Mat Technol & Engn Ningbo 315201 Zhejiang Peoples R China ShanghaiTech Univ Sch Phys Sci & Technol Shanghai 201210 Peoples R China Chinese Acad Sci Inst Phys Beijing Natl Lab Condensed Matter Phys Beijing 100190 Peoples R China Shenzhen Univ Inst Microscale Optoelect Shenzhen 518060 Peoples R China Shenzhen Univ Inst Adv Study Shenzhen 518060 Peoples R China Zhejiang Lab Res Ctr Intelligent Chips Hangzhou 311121 Peoples R China Zhejiang Univ Sch Micronano Elect Hangzhou 310058 Peoples R China Ningbo Univ Fac Elect Engn & Comp Sci EECS Ningbo Peoples R China SynSense AG Thurgauerstr 40 CH-8050 Zurich Switzerland Chengdu SynSense Tech Co Ltd 1577 Tianfu Rd Chengdu Sichuan Peoples R China Wuhan Univ Sch Elect & Informat 299 Bayi Rd Wuhan Peoples R China Univ Zurich Ramistr 71 CH-8006 Zurich Switzerland

The data throughput in the von Neumann architecture-based computing system is limited by its separated processing and memory structure, and the mismatching speed between the two units. As a result, it is quite difficult to improve the energy efficiency in conventional computing system, especially for dealing with unstructured data. Meanwhile, artificial intelligence and robotics nowadays still behave poorly in autonomy, creativity, and sociality, which has been considered as the unimaginable computational requirement for sensorimotor skills. These two plights have urged the imitation and replication of the biological systems in terms of computing, sensing, and even motoring. Hence, the so-called neuromorphic system has drawn worldwide attention in recent decade, which is aimed at addressing the aforementioned needs from the mimicking of neural system. The recent developments on emerging memory devices, nanotechnologies, and materials science have provided an unprecedented opportunity for this aim.

关键词： neuromorphic computing memristors in-memory computing 2D memristors neuromorphic devices China

来源：评论

学校读者我要写书评

暂无评论

Estimation of the domain of attraction for discrete-time linear impulsive control systems with input saturation

引用

APPLIED MATHEMATICS AND COMPUTATION 2019年 362卷 124502-000页

作者： Shen, Zixiang Li, Chuandong Li, Hongfei Cao, Zhengran Southwest Univ Coll Elect & Informat Engn Chongqing Key Lab Nonlinear Circuits & Intelligen Chongqing 400715 Peoples R China

This paper discusses the domain of attraction and stability analysis for discrete-time linear impulsive systems with input saturation. The first goal is to give a stable condition for the system. The second is to present a strategy to find an inner estimate of the domain of attraction via establishing Lyapunov functions and using other mathematical methods. Finally, we present several examples to illustrate the validity of the conditions we have derived. (C) 2019 Published by Elsevier Inc.

关键词： Discrete-time linear system Impulsive control Input saturation Domain of attraction

来源：评论

学校读者我要写书评

暂无评论

Recognition of Impulse of Love at First Sight Based On Photoplethysmography Signal

引用

SENSORS 2020年第22期20卷 6572.-6572.页

作者： Lu, Huan Yuan, Guangjie Zhang, Jin Liu, Guangyuan Southwest Univ Coll Elect & Informat Engn Chongqing 400715 Peoples R China Southwest Univ Inst Affect Comp & Informat Proc Chongqing 400715 Peoples R China Southwest Univ Chongqing Key Lab Nonlinear Circuits & Intelligen Chongqing 400715 Peoples R China

Love at first sight is a well-known and interesting phenomenon, and denotes the strong attraction to a person of the opposite sex when first meeting. As far as we know, there are no studies on the changes in physiological signals between the opposite sexes when this phenomenon occurs. Although privacy is involved, knowing how attractive a partner is may be beneficial to building a future relationship in an open society where both men and women accept each other. Therefore, this study adopts the photoplethysmography (PPG) signal acquisition method (already applied in wearable devices) to collect signals that are beneficial for utilizing the results of the analysis. In particular, this study proposes a love pulse signal recognition algorithm based on a PPG signal. First, given the high correlation between the impulse signals of love at first sight and those for physical attractiveness, photos of people with different levels of attractiveness are used to induce real emotions. Then, the PPG signal is analyzed in the time, frequency, and nonlinear domains, respectively, in order to extract its physiological characteristics. Finally, we propose the use of a variety of machine learning techniques (support vector machine (SVM), random forest (RF), linear discriminant analysis (LDA), and extreme gradient enhancement (XGBoost)) for identifying the impulsive states of love, with or without feature selection. The results show that the XGBoost classifier has the highest classification accuracy (71.09%) when using the feature selection.

关键词： impulse of love at first sight PPG feature selection machine learning

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：