检索结果-内蒙古大学图书馆

Proceedings of the 46th IEEE Conference on Decision and Control, Pages 1-459

作者： Y. Wardi X.C. Ding M. Egerstedt S. Azuma School of Electrical and Computer Engineering Georgia Institute of Technology Atlanta GA USA Department of Systems Science Graduate School of Informatics Kyoto University Kyoto Japan

ISBN: (纸本)9781424414970;1424414970

This paper concerns the problem of on-line (real-time) computation of solutions to the optimal switching time problem in hybrid systems. The systems under consideration are autonomous, and the performance measure to be optimized has the form of a cost functional defined on the state trajectory. The state variable cannot, however, be measured directly and it has to be estimated by a suitable observer. In this paper, we propose an on-line optimization algorithm based on the state observer, and derive bounds on its convergence rate.

关键词： State variable switching pattern Observers IN-LINE Optimization algorithms hybrid systems Converge real-time computation state trajectory

来源：评论

学校读者我要写书评

暂无评论

Content Orientation in Integrated Product Modeling

Content Orientation in Integrated Product Modeling

引用

IEEE International Conference on Intelligent engineering Systems (INES)

作者： Laszlo Horvath Imre J. Rudas Gerhard P. Hancke John von Neumann Faculty of Informatics Budapest Technology Institute of Intelligent Engineering Systems Budapest Hungary Department of Electrical Electronic and Computer Engineering University of Pretoria Pretoria South Africa

Changes in engineering for development of product in the direction of increased complexity, more variants, and customer demand orientation stimulates implementation of advanced information technology in the form of virtual space. For this reason, concept of integrated product model has been implemented in comprehensive descriptions for lifecycle management of product information. Communication between engineer and modeling procedure is a critical factor. The authors identified data orientation of the recent integrated product modeling as a barrier for more efficient communication on user interfaces of product modeling systems. As a possible contribution to development of solution for this problem in industrial professional modeling systems, they propose content oriented layers between human and data oriented models in this paper. Following this, integration issues in content oriented product model are discussed. Next, relevant functions and modeling techniques for the handling of modeled object information are introduced and evaluated. Finally, a method is shown for the propagation of changes initiated for modeled objects in their affect zones.

关键词： Humans ISO standards Information technology User interfaces computer aided manufacturing CADCAM Automation Standards development Intelligent systems Systems engineering and theory

来源：评论

学校读者我要写书评

暂无评论

A Novel Subband Decomposition Based Speckle Noise Reduction Algorithm for SAR Images

A Novel Subband Decomposition Based Speckle Noise Reduction ...

引用

International Conference on Recent Advances in Space Technologies (RAST)

作者： Gokhan Karasakal I. Erer Informatics Institute Advanced Technologies in Engineering Computer Science and Engineering Istanbul Technical University Istanbul Turkey Faculty of Electrical and Electronic Engineering Electronics and Communication Department Istanbul Technical University Istanbul Turkey

A new speckle reduction algorithm based on subband decomposition and multiscale edge detection is presented. The subband decomposition is performed using a DFT/RDFT-based symmetric, zero-phase, nonoverlapping digital filter bank. The noisy images are decomposed into sub-images using RDFT transform based subband decomposition, an edge image is obtained for each level using these sub-images, then a threshold value is estimated according to noise variance in each subband and soft-thresholding is applied on the non-edge regions of the subband images. The despeckled image is obtained from the thresholded subband images using the inverse RDFT transform. The proposed speckle reduction method is applied to several test images corrupted by speckle noise as well as experimental RADARSAT/SAR images. Despeckled images show that this method has better performance than the case where no edge information is used.

关键词： Speckle Noise reduction Discrete wavelet transforms Discrete Fourier transforms Noise level Image edge detection Radar polarimetry Digital filters Microwave filters Filtering

来源：评论

学校读者我要写书评

暂无评论

Robust Transmission of Multi-View Video Streams using Flexible Macroblock Ordering and Systematic LT Codes

Robust Transmission of Multi-View Video Streams using Flexib...

引用

3DTV Conference

作者： S. Argyropoulos A. S. Tan N. Thomos E. Arikan M. G. Strintzis Informatics and Telematics Institute CERTH Thessaloniki Greece Electrical and Computer Engineering Department University of Thessaloniki Greece Electrical and Electronics Engineering Department Bilkent University Ankara Turkey Signal Processing Institute-ITS Ecole Polytechnique Federale de Lausanne Lausanne Switzerland

The transmission of fully compatible H.264/AVC multi-view video coded streams over packet erasure networks is examined. Macroblock classification into unequally important slice groups is considered using the flexible macroblock ordering (FMO) tool of H.264/AVC. Systematic LT codes are used for error protection due to their low complexity and advanced performance. The optimal slice grouping and channel rate allocation are jointly determined by an iterative optimization algorithm based on dynamic programming. The experimental evaluation clearly demonstrates the validity of the proposed method.

关键词： Robustness Streaming media Automatic voltage control Protection Video coding Redundancy Channel coding Turbo codes Contracts Codecs

来源：评论

学校读者我要写书评

暂无评论

Self-tuning PD+I fuzzy logic controller with minimum number of rules

Self-tuning PD+I fuzzy logic controller with minimum number ...

引用

2007 IEEE International Conference on Systems, Man, and Cybernetics, SMC 2007

作者： Teng, F.C. Lotfi, A. Tsoi, A.C. Department of Electrical and Computer Engineering Polytechnic University of Puerto Rico Avenue Ponce De Leon San Juan 00918 Puerto Rico School of Computing and Informatics Nottingham Trent University Burton Street Nottingham NG1 4BU United Kingdom Monash e-Research Centre Monash University VIC 3800 Australia

ISBN: (纸本)1424409918

A novel 9 rules self-tuning PD+I fuzzy logic controller applicable for a class of nonlinear plants is proposed in this paper. The controller comprises of three separate fuzzy logic controllers with each uses minimum number of rules and the output scaling factor is tuned automatically depending on the tracking error dynamic conditions. The controller is applied to a two-link revolute robot for the tracking control. Simulation results show that the robustness and tracking performance of the proposed controller is comparable to standard PD+I fuzzy logic controller at low and medium speed motions. However, the performance of the proposed new design far exceeds the standard design at high speed motions. © 2007 IEEE.

关键词： Fuzzy logic

来源：评论

学校读者我要写书评

暂无评论

Optically-Addressable Packet Timeslot Interchanger Using a Quadruple Switch Array

Optically-Addressable Packet Timeslot Interchanger Using a Q...

引用

Optical Fiber Communication (OFC) Conference

作者： O. Zouraraki D. Petrantonakis K. Yiannopoulos R. Meleiro L. M. Sadeghioon A. Poustie G. Maxwell E. Varvarigos K. Vlachos P. Monteiro D. Simeonidou H. Avramopoulos Electrical and Computer Engineering Department National and Technical University of Athens Athens Greece Computer Engineering and Informatics Department University of Patras Greece Siemens Networks Institute of Telecommunications SA University of Aveiro Portugal University of Essex UK Centre for Integrated Photonics Limited UK

We propose and demonstrate a wavelength converter-based time-slot-interchanger architecture consisting of cascaded programmable delay stages. It uses an integrated quadruple switch array of HMZI switches and operated ... 详细信息

ISBN: (纸本)1557528306

关键词： Optical arrays Optical packet switching Optical switches Optical feedback Optical network units Optical buffering Delay lines Integrated optics Optical fiber networks Optical wavelength conversion

来源：评论

学校读者我要写书评

暂无评论

Editorial

引用

International Journal of Internet Protocol Technology 2007年第1期2卷 1-2页

作者： Mulvenna, Maurice Galis, Alex Dobson, Simon Karmouch, Ahmed School of Computing and Mathematics Faculty of Engineering University of Ulster Newtownabbey BT37 0QB United Kingdom Networks and Services Research Group Department of Electronic and Electrical Engineering University College London Torrington Place London WC1E 7JE United Kingdom Systems Research Group School of Computer Science and Informatics UCD Dublin Belfield Dublin 4 Ireland University of Ottawa 161 Louis Pasteur Ottawa ON K1N 6N5 Canada

来源：评论

学校读者我要写书评

暂无评论

Linking protein mass with function via organismal massome networks

Linking protein mass with function via organismal massome ne...

引用

7th IEEE International Conference on Bioinformatics and Bioengineering, BIBE

作者： Alterovitz, Gil Lyashenko, Eugenia Xiang, Michael Ramoni, Marco F. Division of Health Sciences and Technology Harvard Medical School Massachusetts Institute of Technology Boston MA United States Children's Hospital Informatics Program at Health Sciences and Technology Harvard Medical School Boston MA United States Department of Electrical Engineering and Computer Science Massachusetts Institute of Technology Cambridge MA United States Harvard Partners Center for Genetics and Genomics Harvard Medical School Boston MA United States Department of Biomedical Informatics Columbia University New York NY United States

ISBN: (纸本)1424415098

With the human genome sequenced, attention has been shifting to proteins and their function. Several technologies including mass spectrometry and gel electrophoresis have traditionally been used to study proteins. These technologies rely on proteins' masses to characterize and/or identify them. Once identified, the discovered proteins' are often analyzed for their functional relevance. In this paper, we present an alternative approach to studying protein function directly, based on protein mass. By analyzing proteins with similar mass ranges (bins), we discovered that certain biological functions are associated with specific mass bins more frequently than would be expected by chance. Biological functional classes found in this manner could be seen across the three examined organisms: human, worm and fly. We found no sequence-based homology across significant mass-function proteins in the three different organisms. This investigation leads to useful property that the mass-based biological functional classes are preserved across the organisms. Thus, this paper describes a potential constraint for evolution of similar function based on mass constraints. Finally, this work yields a roadmap for experimental design for functional exploration of proteomes in mass-based technologies such as gel electrophoresis and mass spectrometry. ©2007 IEEE.

关键词： Proteins

来源：评论

学校读者我要写书评

暂无评论

An Efficient Word Segmentation Technique for Historical and Degraded Machine-Printed Documents

An Efficient Word Segmentation Technique for Historical and ...

引用

International Conference on Document Analysis and Recognition

作者： M. Makridis N. Nikolaou B. Gatos Department of Electrical and Computer Engineering Democritus University of Thrace Xanthi Greece Computational Intelligence Laboratory Institute of Informatics and Telecommunications National Center for Scientific Research Demokritos Athens Greece

Word segmentation is a crucial step for segmentation-free document analysis systems and is used for creating an index based on word matching. In this paper, we propose a novel methodology for word segmentation in historical and degraded machine-printed documents. The proposed technique faces problems such as having text of different size, having text and non-text areas lying very near and having non-straight and warped text lines. It is based on: (i) a dynamic run length smoothing algorithm that helps grouping together homogeneous text regions, (ii) noise and punctuation marks removal as well as on obstacle detection in order to facilitate the segmentation process and (iv) a draft text line estimation procedure that guides the final word segmentation result. After testing on numerous historical and degraded machine-printed documents, it has turned out that our methodology performs better compared to current state-of-the-art word segmentation techniques for historical and degraded machine-printed documents.

关键词： Degradation Image segmentation Smoothing methods Pixel Text analysis Algorithm design and analysis Radiofrequency interference Computational intelligence Laboratories informatics

来源：评论

学校读者我要写书评

暂无评论

3D model search and retrieval using the spherical trace transform

引用

Eurasip Journal on Advances in Signal Processing 2007年 2007卷

作者： Zarpalas, Dimitrios Daras, Petros Axenopoulos, Apostolos Tzovaras, Dimitrios Strintzis, Michael G. Information Processing Laboratory Electrical and Computer Engineering Department Aristotle University of Thessaloniki Thessaloniki 54006 Greece Informatics and Telematics Institute 1st km Thermi-Panorama Road Thermi-Thessaloniki 57001 Greece

This paper presents a novel methodology for content-based search and retrieval of 3D objects. After proper positioning of the 3D objects using translation and scaling, a set of functionals is applied to the 3D model producing a new domain of concentric spheres. In this new domain, a new set of functionals is applied,resulting in a descriptor vector which is completely rotation invariant and thus suitable for 3D model matching. Further, weights are assigned to each descriptor, so as to significantly improve the retrieval results. Experiments on two different databases of 3D objects are performed so as to evaluate the proposed method in comparison with those most commonly cited in the literature. The experimental results show that the proposed method is superior in terms of precision versus recall and can be used for 3D model search and retrieval in a highly efficient manner.

关键词： Content based retrieval

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：