检索结果-内蒙古大学图书馆

12th European Signal Processing Conference, EUSIPCO 2004

作者： Smolka, B. Budzan, S. Venetsanopoulos, A.N. Lukac, R. Silesian University of Technology Department of Automatic Control Akademicka 16 Str Gliwice44-100 Poland Edward S. Rogers Sr. Department of Electrical and Computer Engineering University of Toronto 10 King's College Road TorontoONM5S 3G4 Canada

ISBN: (纸本)9783200001657

In this paper a novel class of filters designed for the removal of impulsive noise in color images is presented. The proposed filter class is based on the nonparametric estimation of the density probability function in a sliding filter window. The obtained results show good noise removal capabilities and excellent structure preserving properties of the new impulsive noise removal technique. © 2004 EUSIPCO.

关键词： Impulse noise

来源：评论

学校读者我要写书评

暂无评论

Bounding Approach to Parameter Estimation without Priori Knowledge on Model Structure Error

引用

IFAC Proceedings Volumes 2004年第11期37卷 221-226页

作者： Tao Chang Kazimierz Duzinkiewicz Mietek Brdys Department of Electronic Electrical and Computer Engineering The University of Birmingham Birmingham B15 2TT UK Fax: +44 121 414 4291. Department of Control Engineering Faculty of Electrical Engineering and Automatic Control Gdansk University of Technology ul. G.Namtowicza 11 12 80-952 Gdansk Poland.

Parameter estimation of an autoregressive movmg average (ARMA) model is discussed in this paper by using bounding approach. Bounds on the model structure error are assumed unknown, or known but conservative. To reduce this conservatism, a point-parametric model concept is proposed, where there exist a set of model parameters and structure error corresponding to each input. Feasible parameter sets are defined for point-parametric model. Bounded values on the model parameters and structure error can then be computed jointly by tightening the feasible set using observations under deliberately designed input excitations. Finally, a constantly bounded parameter model is established, which can be used for robust control.

关键词： modelling errors bounding method parameter estimation uncertain dynamic systems robust control

来源：评论

学校读者我要写书评

暂无评论

Robust color image retrieval for the World Wide Web

Robust color image retrieval for the World Wide Web

引用

International Conference on Acoustics, Speech, and Signal Processing (ICASSP)

作者： B. Smolka M. Szczepanski R. Lukac A.N. Venetsanoloulos Department of Automatic Control Silesian University of Technology Gliwice Poland The Edward S. Rogers Sr. Department of Electrical and Computer Engineering University of Toronto Toronto ON Canada

The rapid growth of image archives increases the need for efficient and fast tools that can retrieve and search through a large amount of visual data. In this paper, we propose an efficient method of extracting the image color content, which serves as an image digital signature, allowing us to efficiently index and retrieve the content of large, heterogeneous multimedia Internet based databases. We apply the proposed method for the retrieval of images from the WEBMUSEUM Internet database, containing a collection of fine art images and show that the new method of image color representation is robust to image distorsions caused by resizing and compression and can be incorporated into existing retrieval systems which exploit the information on color content in digital images.

关键词： Robustness Color Image retrieval Web sites Information retrieval Content based retrieval Multimedia databases Internet Image databases Data mining

来源：评论

学校读者我要写书评

暂无评论

Nonparametric technique of impulsive noise removal

Nonparametric technique of impulsive noise removal

引用

European Signal Processing Conference (EUSIPCO)

作者： B. Smolka S. Budzan A.N. Venetsanopoulos R. Lukac Department of Automatic Control Silesian University of Technology Gliwice Poland The Edward S. Rogers Sr. Department of Electrical and Computer Engineering University of Toronto Toronto ON Canada

关键词： Vectors Estimation

来源：评论

学校读者我要写书评

暂无评论

Protein metal binding residue prediction based on neural networks

引用

11th International Conference on Neural Information Processing, ICONIP 2004

作者： Lin, Chin-Teng Lin, Ken-Li Yang, Chih-Hsien Chung, I-Fang Huang, Chuen-Der Yang, Yuh-Shyong Department of Electrical and Control Engineering Chiao-Tung University HsinChu Taiwan Computer Center Chung-Hua University HsinChu Taiwan Inst. of Medical Science University of Tokyo Tokyo Japan Department of Electrical Engineering HsiuPing Institute of Technology Dali Taichung Taiwan Inst. of Bioinformatics Chiao-Tung University HsinChu Taiwan

ISBN: (纸本)3540239316

It is known that over one-third of protein structures contain metal ions, and they are the necessary elements in life system. Traditionally, structural biologists used to investigate properties of metalloproteins (proteins which bind with metal ions) by physical means and interpret the function formation and reaction mechanism of enzyme by their structures and observation from experiments in vitro. Most of proteins have primary structures (amino acid sequence information) only;however, the 3-dimension structures are not always available. In this paper, a direct analysis method is proposed to predict protein metalbinding amino acid residues only from its sequence information by neural network with sliding window-based feature extraction and biological feature encoding techniques and it can successfully detect 15 binding elements in protein, and 6 binding elements in enzyme. © Springer-Verlag Berlin Heidelberg 2004.

关键词： Metal ions

来源：评论

学校读者我要写书评

暂无评论

An experimental study of subsonic cavity flow - physical understanding and control

An experimental study of subsonic cavity flow - physical und...

引用

2nd AIAA Flow control Conference 2004

作者： Debiasi, M. Yan, P. Little, J. Özbay, H. Myatt, J. Samimy, M. Gas Dynamics and Turbulence Laboratory Collaborative Center of Control Science The Ohio State University GDTL/AARL2300 West Case Road Columbus OH 43235 United States Department of Mechanical Engineering United States Department of Electrical and Computer Engineering United States Air Force Research Laboratory United States

ISBN: (纸本)9781624100307

We present the results of an experimental investigation that uses two different techniques for controlling a shallow cavity flow in the Mach number range 0.25-0.5. The first method is basically an open-loop design that relies on zero-net-mass forcing at an optimal frequency for suppressing the cavity flow resonance. The second method is a parallel-proportional with time delay controller, a linear control design that relies on real-time feedback from the flow to counteract the resonance. With properly tuned parameters, both methods are successful in reducing the cavity resonance for flows in the Mach number range explored. However the parallel-proportional controller exhibits a superior robustness with respect to departure of the Mach number from the design conditions, a signature of feedback control designs that are naturally more capable to handle changes of the open-loop plant. An additional benefit of the feedback control method is the lower power requirement to achieve comparable suppression of the resonance. An interpretation is presented of the physical mechanisms by which the optimal forcing frequency and the parallel-proportional with time delay controller reduce the cavity flow resonance. The results support the idea that the optimal forcing frequency control induces in the system a rapid switching between modes competing for the available energy that can be extracted from the mean flow. In the case of parallel- proportional control mode switching is also observed which involves a larger range of frequencies and spreads more the extracted energy thus producing a flow with a quieter, more broadband spectral signature.

关键词： Mach number

来源：评论

学校读者我要写书评

暂无评论

Differentiated Internet pricing using a hierarchical network game model

Differentiated Internet pricing using a hierarchical network...

引用

American control Conference (ACC)

作者： Hongxia Shen T. Basar Decision and Control Laboratory Coordinated Science Laboratory and Department of Electrical and Computer Engineering University of Illinois Urbana IL USA

This paper builds on the model and results of T. Basar and R. Srikant, (2002) and extends them to the case of differentiated prices, again for the single link case. It introduces a hierarchical network game with one service provider and multiple users of different types, where the service provider is allowed to charge different prices to users of different types. The service provider plays with the users a Stackelberg (leader-follower) game, while among users themselves, they play a Nash game. The paper establishes for a general network with multiple links the existence of a unique Nash equilibrium along with the existence of a unique Stackelberg solution. The economics of providing large capacity and price differentiation is examined especially in the single link case and for a many-user regime. One important result is that optimum price differentiation leads to a more egalitarian distribution of resources at fairer prices and improves the service provider's revenue and network performance. Moreover, the service provider has an incentive to increase the capacity proportionally with the number of additional users admitted.

关键词： IP networks Pricing Nash equilibrium Quality of service Capacity planning Routing Game theory Laboratories

来源：评论

学校读者我要写书评

暂无评论

Design and optimization of distributed control system using UML model

Design and optimization of distributed control system using ...

引用

International Conference and Workshop on engineering of computer-Based Systems

作者： J. Kotzian V. Srovnal Faculty of Electrical Engineering and Computer Science Department of Measurement and Control VšB Technical University of Ostrava Czech Republic

The article discusses with the utilization of the UML language for project, realization and optimization of distributed control systems. The work is oriented on the part of distributed control system with embedded systems interconnected by the industrial bus CAN. The article describes the project methodology, UML model and optimization of the system according to the target function. Also example of using methodology in the KUPSON Electronic Article Surveillance control System is described.

关键词： Design optimization Distributed control Unified modeling language Embedded system LAN interconnection electrical equipment industry Industrial control Optimization methods Surveillance control systems

来源：评论

学校读者我要写书评

暂无评论

Robustness of dual-rate inferential MPC systems

Robustness of dual-rate inferential MPC systems

引用

American control Conference (ACC)

作者： J.A. Rossiter J. Sheng T. Chen S.L. Shah Department of Automatic Control & Systems Engineering Sheffield University Sheffield UK Coordinated Science Laboratory University of Illinois Urbana USA Department of Electrical & Computer Engineering University of Alberta Edmonton AB Canada Department of Chemical & Materials Engineering University of Alberta Edmonton AB Canada

This paper investigates the robustness of dual-rate MPC systems with a proposed inferential control strategy. It shows that for some scenarios where a high-frequency model plant mismatch is presented, such dual-rate i... 详细信息

关键词： Robustness Robust stability Predictive models Robust control control systems Predictive control Strontium control system analysis Integrated circuit modeling Time varying systems

来源：评论

学校读者我要写书评

暂无评论

A hierarchical tissue segmentation approach in brain MRI images

A hierarchical tissue segmentation approach in brain MRI ima...

引用

Image Processing, Biomedicine, Multimedia, Financial engineering and Manufacturing - International Forum on Multimedia Image Processing, IFMIP - Sixth Biannual World Automation Congress, WAC 2004

作者： Song, Tao Huang, Mingxiong Lee, Roland R. Gasparovic, Charles Jamshidi, Mo University of New Mexico Albuquerque NM United States Electrical and Computer Engineering Department University of New Mexico Autonomous Control Engineering Center University of New Mexico Radiology Department University of New Mexico New Mexico VA Health Care System MIND Imaging Center University of New Mexico Health Science Center

ISBN: (纸本)188933524X

Magnetic resonance imaging (MRI) is a widely used approach to obtaining high quality medical images of the brain. Post-processing MRI images with segmentation algorithms enhances the visualization and measurement of soft tissues and lesions. Segmented brain images contain information amenable to quantitative analysis (e.g., tissue component percentage in a region of interest (ROI)) and diagnostic interpretation (e.g., total lesion volume). A number of different segmentation algorithms have been developed for this purpose. In this paper, we propose a novel automated segmentation technique, hierarchical structure weighted probabilistic neural network (HSWPNN), based on multi-scale feature extraction, hierarchical labeling structure, and a modified weighted probabilistic neural network (PNN). Compared to other clustering algorithms, our method is relatively robust to noise and accurate. We compare our results to a model of ground truth.

关键词： Magnetic resonance imaging

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：