检索结果-内蒙古大学图书馆

IEEE General Meeting Power& Energy Society

作者： Yixiong Jia Yu Liu Yuzhang Lin Binglin Wang School of Information Science and Technology ShanghaiTech University Shanghai China Key Laboratory of Control of Power Transmission and Conversion Ministry of Education Shanghai China School of Electrical and Computer Engineering University of Massachusetts Lowell USA

ISBN: (数字)9781728155081

ISBN: (纸本)9781728155098

To ensure quick and reliable primary protection on VSCHVDC transmission lines, this paper proposes an improved Dynamic State Estimation (DSE) based protection method with full exploitation of information redundancy. The proposed approach improves the existing DSE based protection method by establishing a new dynamic model of the line under protection, which considers information redundancy embedded in the protection problem. The new dynamic model is systematically solved through the DSE procedure with weight matrices that are mathematically derived. Numerical experiments in an example VSC-HVDC system validate that the proposed DSE based protection method has improved selectivity, dependability and security compared to the existing DSE based protection method. In addition, the computation burden of the method is also carefully examined to ensure that it can meet real-time operation requirements of protective relays in practice.

关键词： Power transmission lines Redundancy Transmission line measurements Numerical models Security Reliability State estimation

来源：评论

学校读者我要写书评

暂无评论

Design and implementation of a general SQL parser

引用

Journal of Physics: Conference Series 2021年第1期2010卷

作者： Kehe Wu Dan Di Wei Li Wenchao Cui School of control and Computer Engineering North China Electric Power University City Bejing 102206 China

With the rapid development of computer network, the information security of database becomes more and more important. In database security protection, SQL statements need to be parsed and reconstructed. However, the database audit products on the market lack accurate analysis of SQL statements. Therefore, this paper constructs an SQL parser from four aspects: lexical analysis, syntax analysis, SQL spanning tree optimization and error detection.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Continuously Adaptive Mean-shift Tracking Algorithm Based on Improved Gaussian Model

引用

Journal of engineering Science and Technology Review 2020年第5期13卷 50-57页

作者： Sun, Jinping Ding, Enjie Li, Dan Zhang, Kailiang Wang, Ximin School of Information and Control Engineering China University of Mining and Technology Xuzhou221008 China Xuzhou University of Technology Xuzhou221008 China School of Computer Science University of Nottingham NottinghamNG8 1AF United Kingdom

In complex scenes with light changes, deformations, and occlusions, target tracking easily contains a large amount of background color information when building a target color model. Thus, the tracking effect is reduced. To improve the accuracy of the traditional continuously adaptive mean-shift algorithm (CAMShift) in complex scenarios, a target tracking algorithm based on an improved Gaussian mixture model was proposed. Using the Gaussian mixture model, the tracking image was divided into the foreground and background superposition. The histograms of the hue component were respectively established in the foreground and background of the target area. By suppressing the same hue as the background color in the tracking image, the target color model was established. The target position was iteratively obtained by implementing the CAMShift algorithm using the enhanced target color model. The Bhattacharyya distance between the candidate target and the target template was used as basis for updating the target model. Simulation analysis under benchmark data sets and actual monitoring scenarios verified the accuracy of the proposed algorithm. Results show that the distance precision and overlap success rate of the proposed algorithm are 0.88 and 0.625, respectively. The proposed algorithm effectively solves long-term target tracking problems with complex scenes, such as occlusion, background clutters, and illumination variation. This study eliminates the problem of target recognition caused by environmental changes and provides references for real-time monitoring of abnormal traffic conditions. © 2020 All Rights Reserved

关键词： Target tracking

来源：评论

学校读者我要写书评

暂无评论

Indoor Localization System Using Ultra Low-Power Radio Landmarks Based on Radio Signal Strength and Travel Time 1

引用

6th International Conference on Sensor Networks, SENSORNETS 2017 and 7th International Conference on Sensor Networks, SENSORNETS 2018

作者： Höflinger, Fabian Bordoy, Joan Zhang, Rui Quan, Yitong Bannoura, Amir Simon, Nikolas Reindl, Leonhard Schindelhauer, Christian Wang, Zhi Department of Microsystems Engineering University of Freiburg Freiburg im Breisgau Germany Department of Computer Science University of Freiburg Freiburg im Breisgau Germany School of Control Science and Engineering Zhejiang University Hangzhou China

ISBN: (数字)9783030301101

ISBN: (纸本)9783030301095

In this paper we present a novel indoor localization system to track the emergency responders using landmarks network. The low-power landmarks are small and cost-efficient and can be integrated into the building infrastructure, such as smoke detectors with very long operation duration thanks to radio wake-up technology. During the sleep mode the landmarks consumes only 66 (formula presented)W and can maintain its operation up to 5 years. The positioning is achieved by combining the either the radio strength or UWB travel time and IMU based dead reckoning to overcome the disadvantages such as error due to multipath propagation and sensor drift. The experimental results show that the proposed system using either radio strength or radio travel time based ranging is able to outperform both standalone systems and meanwhile maintain the low power consumption. © 2019, Springer Nature Switzerland AG.

关键词： Travel time

来源：评论

学校读者我要写书评

暂无评论

Multiple-Model Mobile Localization Based on Unscented Kalman Filter in Mixed Indoor

引用

Journal of Physics: Conference Series 2021年第1期2026卷

作者： Yueyang Huang Wenpeng Wang Xuanyu Liu Xiaoyu Wang The School of Information and Control Engineering Liaoning Shihua University Fushun 113001 China The School of the School of Computer and Communication Engineering Liaoning Shihua University Fushun 113001 China

In this paper, we present an Interactive multiple mode-Unscented Kalman filter (IMM-UKF) algorithm to achieve mobile node location under wireless sensor networks environments. In the IMM structure, UKF and Variational Bayesian Adaptive Method based on UKF are adapted in parallel, which can improve positioning accuracy in the process of line-of sight (LOS) and non-line-of-sight (NLOS) signal state switching. The estimated values by filtering are fused according to the weighting factors to get the estimated positions. Moreover, when NLOS measurement noise covariance change, we propose Variational Bayesian Adaptive Method based on UKF to improve robustness. Both Simulation and experiments illustrate that the propose algorithm performs can achieve competitive localization accuracy.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Achieving Secure and Efficient Cloud Search Services: Cross-Lingual Multi-Keyword Rank Search over Encrypted Cloud Data

Achieving Secure and Efficient Cloud Search Services: Cross-...

引用

2019 IEEE International Conference on Communications, ICC 2019

作者： Liu, Xueyan Guan, Zhitao Du, Xiaojiang Wu, Longfei Abedin, Zain Ul Guizani, Mohsen School of Control and Computer Engineering North China Electric Power University Beijing China Department of Computer and Information Sciences Temple University PhiladelphiaPA United States Department of Mathematics and Computer Science Fayetteville State University FayettevilleNC United States Electrical and Computer Engineering Department University of Idaho MoscowID United States

ISBN: (纸本)9781538680889

Multi-user multi-keyword ranked search scheme in arbitrary language is a novel multi-keyword rank searchable encryption (MRSE) framework based on Paillier Cryptosystem with Threshold Decryption (PCTD). Compared to previous MRSE schemes constructed based on the k-nearest neighbor searchable encryption (KNN-SE) algorithm, it can mitigate some drawbacks and achieve better performance in terms of functionality and efficiency. Additionally, it does not require a predefined keyword set and support keywords in arbitrary languages. However, due to the pattern of exact matching of keywords in the new MRSE scheme, multilingual search is limited to each language and cannot be searched across languages. In this paper, we propose a cross-lingual multi-keyword rank search (CLRSE) scheme which eliminates the barrier of languages and achieves semantic extension with using the Open Multilingual Wordnet. Our CLRSE scheme also realizes intelligent and personalized search through flexible keyword and language preference settings. We evaluate the performance of our scheme in terms of security, functionality, precision and efficiency, via extensive experiments. © 2019 IEEE.

关键词： Efficiency

来源：评论

学校读者我要写书评

暂无评论

A Spatially Programmable DNA Nanorobot Arm to Modulate Anisotropic Gold Nanoparticle Assembly by Enzymatic Excision

引用

Angewandte Chemie 2023年第43期135卷

作者： Prof. Jing Yang Yuan Liang Xiang Li Yongpeng Zhang Prof. Long Qian Prof. Yonggang Ke Prof. Cheng Zhang School of Computer Science Key Lab of High Confidence Software Technologies Peking University Beijing 100871 China School of Control and Computer Engineering North China Electric Power University Beijing 102206 China Center for Quantitative Biology Peking University Beijing 100871 China Wallace H. Coulter Department of Biomedical Engineering Georgia Institute of Technology and Emory University Emory University School of Medicine Atlanta GA 30322 USA Department of Chemistry Emory University Atlanta GA 30322 USA

Programmable assembly of gold nanoparticle superstructures with precise spatial arrangement has drawn much attention for their unique characteristics in plasmonics and biomedicine. Bio-inspired methods have already provided programmable, molecular approaches to direct AuNP assemblies using biopolymers. The existing methods, however, predominantly use DNA as scaffolds to directly guide the AuNP interactions to produce intended superstructures. New paradigms for regulating AuNP assembly will greatly enrich the toolbox for DNA-directed AuNP manipulation and fabrication. Here, we developed a strategy of using a spatially programmable enzymatic nanorobot arm to modulate anisotropic DNA surface modifications and assembly of AuNPs. Through spatial controls of the proximity of the reactants, the locations of the modifications were precisely regulated. We demonstrated the control of the modifications on a single 15 nm AuNP, as well as on a rectangular DNA origami platform, to direct unique anisotropic AuNP assemblies. This method adds an alternative enzymatic manipulation to DNA-directed AuNP superstructure assembly.

关键词： AuNPs Assembly DNA Origami Enzymatic Excision Reactions Molecular Spatial Programmability Nanorobot

来源：评论

学校读者我要写书评

暂无评论

Broadband Chaos Generation from Relaxation Oscillation-Free Polarization Mode of Vertical-Cavity Surface-Emitting Laser

引用

Guangxue Xuebao/Acta Optica Sinica 2025年第10期45卷

作者： Di, Chengzhen Liu, Qi Wang, Longsheng Zhao, Qingchun Guo, Yuanyuan Chang, Pengfa Jia, Zhiwei Wang, Anbang Key Laboratory of Advanced Transducers and Intelligent Control System Ministry of Education Taiyuan University of Technology Shanxi Taiyuan030024 China College of Electronic Information and Optical Engineering Taiyuan University of Technology Shanxi Jinzhong030600 China Key Laboratory of Precision Measurement Physics Ministry of Shanxi Province Taiyuan University of Technology Shanxi Taiyuan030024 China School of Computer and Communication Engineering Northeastern University at Qinhuangdao Hebei Qinhuangdao066004 China Key Laboratory of Photonic Technology for Integrated Sensing and Communication Ministry of Education Guangdong University of Technology Guangdong Guangzhou510006 China

Objective Secure communication based on chaotic lasers has gained significant attention in recent years due to its high speed and compatibility with existing fiber-optic networks. Vertical-cavity surface-emitting lasers (VCSELs) are promising candidates, offering a compact structure and low power consumption. However, VCSELs are constrained by chaotic bandwidth limitations induced by relaxation oscillations, which reduce the secure transmission rate. Existing methods for broadening the chaos bandwidth often rely on complex external perturbations, which may hinder system synchronization. We propose a simplified method for generating broadband chaos by utilizing the relaxation-oscillation-free polarization mode of VCSELs. Methods We present a novel approach for generating broadband chaos by utilizing the relaxation-oscillation-free polarization mode of VCSELs. The experimental setup (Fig. 1) employs a custom single-mode VCSEL with a wavelength of 1550 nm and no internal isolator. The laser is powered by a low-noise current source and is equipped with precise temperature control to ensure stable operation. Optical feedback is provided via a fiber mirror, with its intensity regulated by a variable optical attenuator. Polarization controllers are used to align the feedback polarization, directing X mode feedback to the X mode and Y mode feedback to the Y mode. The output signals are separated into X+Y, X, and Y modes using polarization beam splitters. The spectral, temporal, and dynamic properties of the VCSEL are analyzed using an optical spectrum analyzer, a high-speed oscilloscope, and an electrical spectrum analyzer. Key parameters, including bias current and feedback strength, are systematically varied and optimized to investigate their effects on chaos generation, with the aim of identifying the optimal conditions for achieving broadband chaos with the desired characteristics. Results and Discussions We begin with an in-depth analysis of the free-running VCSEL to e

关键词： Optical feedback

来源：评论

学校读者我要写书评

暂无评论

Attribute Rule performance in Data Mining for Software Deformity Prophecy Datasets Models

Attribute Rule performance in Data Mining for Software Defor...

引用

Advances in the Emerging Computing Technologies (AECT), International Conference on

作者： Salahuddin Shaikh Liu Changan Maaz Rasheed Malik School of Control & Computer Engineeringt North China Electric Power Universty Beijing China dept. of Information Communication Engineering Guilin University of Electronic Technology Guilin China

ISBN: (数字)9781728144528

ISBN: (纸本)9781728144535

In recently, all the developers, programmer and software engineers, they are working specially on software component and software testing to compete the software technology in the world. For this competition, they are using different kind of sources to analysis the software reliability and importance. Nowadays Data mining is one of source, which is used in software for overcome the problem of software fault which occur during the software test and its analysis. This kind of problem leads software deformity prophecy in software. In this research paper, we are also trying to overcome the software deformity prophecy problem with the help of our proposed solution called ONER rule attribute. We have used REPOSITORY datasets models, these datasets models are defected and non-defected datasets models. Our analysis class of interest is defected models. In our research, we have analyzed the efficiency of our proposed solution methods. The experiments results showed that using of ONER with discretize, have improved the efficiency of correctly classified instances in all. Using percentage split and training datasets with ONER discretize rule attribute have improved correctly classified in all datasets models. The analysis of positive accuracy f-measure is also increased in percentage split during the use of ONER with discretize but in some datasets models, the training data and cross validation is better with use of ONER rule attribute. The area under curve (ROC) in both scenarios using ONER rule attribute and discretize with ONER rule attribute is almost same or equal with each other.

关键词： Software Data mining Deformable models Measurement Data models Object oriented modeling Testing

来源：评论

学校读者我要写书评

暂无评论

Think too fast nor too slow: The computational trade-off between planning and reinforcement learning

arXiv

引用

arXiv 2020年

作者： Moerland, Thomas M. Deichler, Anna Baldi, Simone Broekens, Joost Jonker, Catholijn M. Interactive Intelligence Tu Delft Leiden Institute of Advanced Computer Science Leiden University School of Cyberscience and Engineering Southeast University Delft Center for Systems and Control Tu Delft

Planning and reinforcement learning are two key approaches to sequential decision making. Multistep approximate real-Time dynamic programming, a recently successful algorithm class of which AlphaZero [Silver et al., 2018] is an example, combines both by nesting planning within a learning loop. However, the combination of planning and learning introduces a new question: how should we balance time spend on planning, learning and acting? The importance of this trade-off has not been explicitly studied before. We show that it is actually of key importance, with computational results indicating that we should neither plan too long nor too short. Conceptually, we identify a new spectrum of planning-learning algorithms which ranges from exhaustive search (long planning) to modelfree RL (no planning), with optimal performance achieved midway. Copyright © 2020, The Authors. All rights reserved.

关键词： Reinforcement 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：