检索结果-南通市图书馆

Topology inference of uncertain complex dynamical networks and its applications in hidden nodes detection

Science China(Technological Sciences) 2016年第8期59卷 1232-1243页

作者： WANG YingFei WU XiaoQun FENG Hui lu JunAn lu jinhu School of Mathematics and Statistics Wuhan University Wuhan 430072 China Computational Science Hubei Key Laboratory Wuhan University Wuhan 430072 China Academy of Mathematics and Systems Science Chinese Academy of Sciences Beijing 100190 China

The topological structure of a complex dynamical network plays a vital role in determining the network＇s evolutionary mecha- nisms and functional behaviors, thus recognizing and inferring the network structure is of both theoretical and practical signif- icance. Although various approaches have been proposed to estimate network topologies, many are not well established to the noisy nature of network dynamics and ubiquity of transmission delay among network individuals. This paper focuses on to- pology inference of uncertain complex dynamical networks. An auxiliary network is constructed and an adaptive scheme is proposed to track topological parameters. It is noteworthy that the considered network model is supposed to contain practical stochastic perturbations, and noisy observations are taken as control inputs of the constructed auxiliary network. In particular, the control technique can be further employed to locate hidden sources （or latent variables） in networks. Numerical examples are provided to illustrate the effectiveness of the proposed scheme. In addition, the impact of coupling strength and coupling delay on identification performance is assessed. The proposed scheme provides engineers with a convenient approach to infer topologies of general complex dynamical networks and locate hidden sources, and the detailed performance evaluation can further facilitate practical circuit design.

关键词： complex dynamical network topology inference coupling delay stochastic perturbation hidden node

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

An overview on the designs of distributed observers in LTI multi-agent systems

引用

Science China(Technological Sciences) 2021年第11期64卷 2337-2346页

作者： PEI YingQing GU HaiBo LIU KeXin lu jinhu Key Laboratory of Systems and Control Academy of Mathematics and Systems ScienceChinese Academy of SciencesBeijing 100190China School of Mathematical Sciences University of Chinese Academy of SciencesBeijing 100049China School of Automation Science and Electrical Engineering Beijing Advanced Innovation Center for Big Data and Brain ComputingBeihang UniversityBeijing 100191China

With the rapid development of information technologies and cloud computing, sensor networks play an increasingly important role in our society. Over the past few decades, distributed observer theory has attracted unprecedented attention due to its wide potential applications in different areas. Meanwhile, various approaches and algorithms have been proposed and investigated. The design of distributed observers is one of the frontier topics of system and control research, which has the significant theoretical values and broad application prospects. This paper attempts to review the representative models and the corresponding approaches for distributed observer design in linear time-invariant(LTI) systems. Firstly, the research backgrounds and main advances of distributed observer designs are briefly reviewed. Then, recent results of distributed observer designs for discrete-time and continuous-time LTI multi-agent systems(MASs) are introduced in detail, respectively. Finally, the prospects and the future work directions of the design of distributed observers are put forward. The main purpose of this paper is to promote the emerging topic on the designs of distributed observers, with focuses on the interdisciplinary interest from technological sciences.

关键词： multi-agent system linear time-invarient system distributed observer consensus

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Recent advances of few-shot learning methods and applications

引用

Science China(Technological Sciences) 2023年第4期66卷 920-944页

作者： WANG JianYuan LIU KeXin ZHANG YuCheng LENG Biao lu jinhu School of Automation Science and Electrical Engineering Beihang UniversityBeijing 100191China School of Computer Science and Engineering Beihang UniversityBeijing 100191China

The rapid development of deep learning provides great convenience for production and ***,the massive labels required for training models limits further ***-shot learning which can obtain a high-performance model by learning few samples in new tasks,providing a solution for many scenarios that lack *** paper summarizes few-shot learning algorithms in recent years and proposes a ***,we introduce the few-shot learning task and its ***,according to different implementation strategies,few-shot learning methods in recent years are divided into five categories,including data augmentation-based methods,metric learning-based methods,parameter optimization-based methods,external memory-based methods,and other ***,We investigate the application of few-shot learning methods and summarize them from three directions,including computer vision,human-machine language interaction,and robot ***,we analyze the existing few-shot learning methods by comparing evaluation results on mini Image Net,and summarize the whole paper.

关键词： few-shot learning deep learning meta learning data augmentation parameter optimization

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

A distributed normalized Nash equilibrium seeking algorithm for power allocation among micro-grids

引用

Science China(Technological Sciences) 2021年第2期64卷 341-352页

作者： FU Zao YU WenWu lu jinhu YAO YiYang MEI Feng School of Cyber Science and Engineering Southeast UniversityNanjing 210096China School of Mathematics Southeast UniversityNanjing 210096China School of Automation Science and Electrical Engineering Beihang UniversityBeijing 100191China State Grid Zhejiang Electric Power Company Information&Telecommunication Branch Hangzhou 310007China

In this paper, a power allocation problem based on the Cournot game and generalized Nash game is proposed. After integrating dynamic average consensus algorithm and distributed projection neural network through singular perturbation systems, a normalized Nash equilibrium seeking algorithm is presented to solve the proposed power allocation problem in a distributed *** Lyapunov stability with the singular perturbation analysis, the convergence of the proposed algorithm is analyzed. A simulation on IEEE 118-bus confirms that the proposed distributed algorithm can adjust the power allocation according to different situations, while keeping the optimal solution within the feasible set.

关键词： generalized Nash game normalized nash equilibrium points distributed nash equilibrium seeking algorithm

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

STABILITY OF N-DIMENSIONAL LINEAR SYSTEMS WITH MULTIPLE DELAYS AND APPLICATION TO SYNCHRONIZATION

引用

Journal of Systems Science & Complexity 2006年第2期19卷 149-156页

作者： Weihua DENG jinhu lu Changpin LI School of Mathematics and Statistics Lanzhou University Lanzhou 730000 China Department of Mathematics Shanghai University Shanghai 200444 China. Key Laboratory of Systems and Control Institute of Systems Science Academy of Mathematics and Systems Science Chinese Academy of Sciences Beijing 100080 China Department of Ecology and Evolutionary Biology Princeton University NJ 08544 USA

This paper further investigates the stability of the n-dimensional linear systems with multiple delays. Using Laplace transform, we introduce a definition of characteristic equation for the n-dimensional linear systems with multiple delays. Moreover, one sufficient condition is attained for the Lyapunov globally asymptotical stability of the general multi-delay linear systems. In particular, our result shows that some uncommensurate linear delays systems have the similar stability criterion as that of the commensurate linear delays systems. This result also generalizes that of Chen and Moore （2002）. Finally, this theorem is applied to chaos synchronization of the multi-delay coupled Chua＇s systems.

关键词： Chaos synchronization multi-delay linear systems stability.

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Influence and optimization of parameters of prepreg viscosity during placement

引用

Chinese Journal of Aeronautics 2022年第4期35卷 438-449页

作者： Lei ZU Xianzhao XIA Qian ZHANG Xiaolong JIA Huabi WANG Guiming ZHANG jinhu lu Anhui Province Key Laboratory of Aerospace Structural Parts Forming Technology and Equipment Hefei University of TechnologyHefei 230009China Key Laboratory of Carbon Fiber and Functional Polymers Ministry of EducationBeijing University of Chemical TechnologyBeijing 100029China State Key Laboratory of Organic-Inorganic Composites College of Materials Science and EngineeringBeijing University of Chemical TechnologyBeijing 100029China

This paper tested the viscosity of prepreg in the automatic placement process, and conducted the probe and placement-90° peel tests through the test systems. The law of variation of prepreg viscosity during the laying process was studied through these tests under different conditions by taking the peel force to intuitively and quantitatively characterise the viscosity of the *** results show that this viscosity is inversely proportional to the laying rate, proportional to the laying pressure, and quadratic to the laying temperature. Then, peel tests were simulated to validate both the correctness of the peel test and that of the probe test data fitting the two-line cohesion model. On this basis, a response surface test for laying and peeling was designed. Taking viscous peel force as the response target, the laying process parameters were optimised and the significance of their influence was further studied. The error between the test value and the predicted value of the maximum viscous peel force is 3.03%.

关键词： Automatic placement Cohesion model Optimization Peel test Probe test Significance of influence Viscosity

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

产黄曲霉毒素真菌双重荧光定量PCR检测技术的建立与应用

引用

中国粮油学报 2024年第2期39卷 188-195页

作者：陈冠果李可陆金虎金晨晨王龑帅江冰鲍维琪程昌勇宋厚辉张晓峰浙江农林大学动物科技学院·动物医学院浙江省畜禽绿色生态健康养殖应用技术研究重点实验室动物健康互联网检测技术浙江省工程研究中心浙江省动物医学与健康管理国际科技合作基地中澳动物健康大数据分析联合实验室杭州311300 浙江省检验检疫科学技术研究院杭州310016 浙江工业大学食品科学与工程学院杭州310014

为实现产黄曲霉毒素真菌的快速检测,本研究建立了检测产黄曲霉毒素真菌的aflR基因和nor-1基因的双重荧光定量PCR方法。分别针对aflR基因和nor-l基因保守序列,各设计2对特异性引物和探针,通过引物对间的有效性实验各筛选出1对最优的aflR... 详细信息

为实现产黄曲霉毒素真菌的快速检测,本研究建立了检测产黄曲霉毒素真菌的aflR基因和nor-1基因的双重荧光定量PCR方法。分别针对aflR基因和nor-l基因保守序列,各设计2对特异性引物和探针,通过引物对间的有效性实验各筛选出1对最优的aflR引物探针和nor-1引物探针,随后建立并优化双重荧光定量PCR的反应条件,构建标准曲线,测定该方法的重复性、灵敏度和特异性。结果显示,成功筛选出aflR-2和nor1-2 2组引物/探针组合,并优化和确定了引物/探针的最佳反应终浓度。特异性实验结果显示,本研究建立的检测方法仅对产黄曲霉毒素真菌的aflR基因和nor-1基因呈现特异性扩增,对黑曲霉、碳黑曲霉、赭曲霉和镰刀菌等常见产毒真菌的核酸样品均无扩增曲线。建立的方法重复性好,批内和批间变异系数均<3%,双重反应体系的检测灵敏度均低至1×10^(2)copies/μL。利用本研究所建立的方法与ELISA试剂盒分别对80份食品样品进行检测,结果显示,双重荧光定量PCR共检测出9份阳性样品,而ELISA试剂盒只检测出了7份阳性,表明本研究建立的方法具有更高的灵敏度和准确性。

关键词：产黄曲霉毒素真菌双重荧光定量PCR 快速检测

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

The Path Planning Of Mobile Sink Based On Wolf Pack Algorithm

The Path Planning Of Mobile Sink Based On Wolf Pack Algorith...

引用

作者： Jiang Yi Zhang lu lu jinhu Lanzhou Jiaotong University

Mobile sinks avoids imbalances in energy consumption caused by multihop transmission in wireless sensor networks（WSNs）.In order to shorten the length of the travel path and further reduce the energy consumption of the network transmission,the mobile sinks travel path was *** the visiting point of each overlapping area,and use the wolf pack algorithm（WPA） to plan a traveling *** the visiting point is a point within the overlapping area of communication ranges of sensors not one by one access to each node,it effectively reduces the length of the *** method not only shortens the length of the traveling path for the mobile sink but reduces the computational effort required for traveling-path planning by the TSP algorithm as *** computer simulation proved that the routing protocol can reduce and balance the energy consumption efficiently,prolonging the wireless sensor network survival period and improve the link quality.

关键词： Wireless Sensor Networks Wolf Pack Algorithm Contribution Distribution Energy Consumption

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

SWITCHING CONTROL: FROM SIMPLE RULES TO COMPLEX CHAOTIC SYSTEMS

引用

Journal of Systems Science & Complexity 2003年第3期16卷 404-413页

作者： lu jinhu(Institute of Systems Sciences, Academy of Mathematics and System Sciences, Chinese Academy of Sciences, Beijing 100080, China ) Institute of Systems Sciences Academy of Mathematics and System Sciences Chinese Academy of Sciences 北京 100080

This paper reviews and introduces some simple switching piecewise-linear controllers, which can generate complex chaotic behaviors from simple switching *** mechanism of simple switching rules creating complex chaotic... 详细信息

关键词： switching control simple rules complex systems

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Crowd Counting for Static Images: A Survey of Methodology

Crowd Counting for Static Images: A Survey of Methodology

引用

第三十九届中国控制会议

作者： Ying luo jinhu lu Baochang Zhang School of Automation Science and Electrical Engineering Beihang University Shenyuan Honors College Beihang University School of Automation Science and Electrical Engineering State Key Laboratory of Software Development Environmentand Beijing Advanced Innovation Center for Big Data and Brain ComputingBeihang University

Crowd counting for static images is one of the typical application fields of image processing. it is essential to direct crowd analysis for public security purposes under the background of a rapidly growing social environment. Crowd counting for static images involves crucial challenges such as occlusions, scale variations, scene perspective distortions and diverse crowd distributions. It has now become an independent research hotspot. This paper investigates the literature of crowd counting tasks, summarizes the evolution of counting approaches, compares and analyzes traditional methods and current trends of CNN estimation-based counting, and then evaluates common datasets for crowd counting tasks. Conclusions concerning summarizations and prospects are made.

关键词： Crowd counting crowd analysis pattern recognition computer vision

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

欢迎您,

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

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

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

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

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：