检索结果-内蒙古大学图书馆

International Conference on Machine Learning and Cybernetics (ICMLC)

作者： Rui-Sheng Ran Ting-Zhu Huan Liao School of Computer Science and Engineering School of Applied Mathematics University of Electronic Science and Technology of China Chengdu P.R. China

An effective method of color image recognition is proposed in this paper. The singular value (SV) feature vector is firstly extracted as algebraic feature of color image; then the characteristic matrix of image is presented, which is made up of the SV feature vector of image. And then using the similarity of the characteristic matrices, the method for recognition is established. The recognition rate is satisfactory from the experiment.

关键词： Color Image recognition Quaternions Matrix decomposition Feature extraction Pixel Singular value decomposition Radio access networks computer science mathematics

来源：评论

学校读者我要写书评

暂无评论

Optimized schemes for the Method of Auxiliary Sources applied to the analysis of various metallic scatterers

Optimized schemes for the Method of Auxiliary Sources applie...

引用

Joint 9th International Conference on Electromagnetics in Advanced Applications, ICEAA 2005 and 11th European Electromagnetic Structures Conference, EESC 2005

作者： Vouldis, Angelos T. Avdikos, Georgios K. Anastassiu, Hristos T. School of Electrical and Computer Engineering National Technical University of Athens Heroon Polytechniou 9 15780 Athens Greece School of Applied Mathematics and Physics National Technical University of Athens Heroon Polytechniou 9 15780 Athens Greece Hellenic Aerospace Industry Electronics Engineering Department PO Box 23 GR-32009 Schimatari - Tanagra / Viotia Greece

ISBN: (纸本)8882020932

This paper presents a numerical analysis of electromagnetic scattering from various infinite, metallic cylinders using the Method of Auxiliary Sources (MAS). The cross section of all geometries under investigation can be considered as perturbations of a circle, i. e. of a configuration that was thoroughly examined in the literature recently. Several plots depicting the computational error, associated with the numerical solution of the MAS linear system, as well as the condition number of the impedance matrix, are presented and discussed. The final purpose of this study is the extraction of useful conclusions on the optimum location of the auxiliary sources for arbitrarily shaped scatterers.

关键词： Linear systems

来源：评论

学校读者我要写书评

暂无评论

A Periodic Solution of Cellular Neural Networks with Delay

引用

Journal of Electronic Science and Technology of China 2005年第4期3卷 360-363页

作者：朱培勇孙世新 School of Applied Mathematics University of Electronic Science and Technology of China Chengdu 610054 China School of Computer Science and Engineering University of Electronic Science and Technology of ChinaChengdu 610054 China

It is shown that there is an unique ω-period solution x（t, φ^＊） for a delayed cellular network and its each solution x（t, φ） converges exponentially to x（t, φ^＊） if its each output function is bounded and ... 详细信息

关键词： cellular neural network periodic solution exponential converge Lipschitz condition

来源：评论

学校读者我要写书评

暂无评论

The COTS Simulation Package Interoperability Product Development Group (CSPI-PDG)

The COTS Simulation Package Interoperability Product Develop...

引用

European Simulation Interoperability Workshop 2005

作者： Taylor, Simon J.E. Turner, Stephen John Low, Malcolm Yoke Hean Centre for Applied Simulation Modelling School of Information Systems Computing and Mathematics Brunel University Uxbridge UB8 3PH United Kingdom School of Computer Engineering Nanyang Technological University Nanyang Avenue Singapore 639798 Singapore Singapore Institute of Manufacturing Technology 71 Nanyang Drive Singapore 638075 Singapore

ISBN: (纸本)9781622761418

For many years discrete-event simulation has been used to analyse production and logistics problems in manufacturing and defence. In the early 1980s, visual interactive modelling environments were created that supported the development, experimentation and visualisation of simulation models. Today these environments are termed Commercial-off-the-shelf Simulation Packages (CSPs). With the advent of distributed simulation and, later, the High Level Architecture, the possibility existed to link together these CSPs and their models to simulate larger problems within enterprises (e.g. multiple production lines) and across supply chains. However, the problem of standardising the use of the HLA and its constituent parts in this domain exists. The solution of this problem is the work of the CSP Interoperability Product Development Group (CSPI-PDG). The purpose of this paper is to introduce the CSPI-PDG and to review for the first time in a SISO Workshop the suite of standards proposed by the group and the current progress.

关键词： Discrete event simulation

来源：评论

学校读者我要写书评

暂无评论

Noise and the two-thirds power law

Noise and the two-thirds power law

引用

2005 Annual Conference on Neural Information Processing Systems, NIPS 2005

作者： Maoz, Uri Portugaly, Elon Flash, Tamar Weiss, Yair Interdisciplinary Center for Neural Computation Hebrew University of Jerusalem Edmond Safra Campus Givat Ram Jerusalem 91904 Israel Department of Computer Science and Applied Mathematics Weizmann Institute of Science PO Box 26 Rehovot 76100 Israel School of Computer Science and Engineering Hebrew University of Jerusalem Edmond Safra Campus Givat Ram Jerusalem 91904 Israel

ISBN: (纸本)9780262232531

The two-thirds power law, an empirical law stating an inverse non-linear relationship between the tangential hand speed and the curvature of its trajectory during curved motion, is widely acknowledged to be an invariant of upper-limb movement. It has also been shown to exist in eyemotion, locomotion and was even demonstrated in motion perception and prediction. This ubiquity has fostered various attempts to uncover the origins of this empirical relationship. In these it was generally attributed either to smoothness in hand- or joint-space or to the result of mechanisms that damp noise inherent in the motor system to produce the smooth trajectories evident in healthy human motion. We show here that white Gaussian noise also obeys this power-law. Analysis of signal and noise combinations shows that trajectories that were synthetically created not to comply with the power-law are transformed to power-law compliant ones after combination with low levels of noise. Furthermore, there exist colored noise types that drive non-power-law trajectories to power-law compliance and are not affected by smoothing. These results suggest caution when running experiments aimed at verifying the power-law or assuming its underlying existence without proper analysis of the noise. Our results could also suggest that the power-law might be derived not from smoothness or smoothness-inducing mechanisms operating on the noise inherent in our motor system but rather from the correlated noise which is inherent in this motor system.

关键词： Trajectories

来源：评论

学校读者我要写书评

暂无评论

Visibility constrained surface evolution

Visibility constrained surface evolution

引用

Conference on computer Vision and Pattern Recognition (CVPR)

作者： J.E. Solem F. Kahl A. Heyden Applied Mathematics Group School of Technology and Society Malmö University Sweden Department of Computer Science & Engineering University of California La Jolla CA USA

The problem of feature-based surface reconstruction is considered in this paper. Our main contribution is the ability to handle visibility constraints, obtained from the projections of points, curves and silhouettes, in the surface fitting process. While traditional methods often ignore such information, we show that visibility constraints not only give better initial surface estimates and faster convergence, but also provide an important cue for determining surface topology. The problem is cast as a variational problem with constraints within the level set framework. It is shown how to evolve the surface without violating the visibility constraints using methods from variational calculus. Applications of the theory are detailed for a number of important cases of geometric primitives: points, curves and visual hulls. Several experiments on real image sequences are given to demonstrate the performance of the approach.

关键词： Surface fitting Surface reconstruction Layout Level set Image reconstruction Topology Cameras Clouds mathematics computer science

来源：评论

学校读者我要写书评

暂无评论

Missile interceptor guidance and control using second order sliding modes

Missile interceptor guidance and control using second order ...

引用

作者： Shtessel, Yuri B. Shkolnikov, Ilya A. Levant, Arie Department of Electrical and Computer Engineering University of Alabama in Huntsville Huntsville AL 35899 United States Z/I Imaging Corporation Intergraph Company 230 Business Park Blvd. Madison AL 35757 United States Applied Mathematics Department School of Mathematical Sciences Tel-Aviv University Tel-Aviv 69978 Israel

ISBN: (纸本)008045108X

The missile interceptors integrated guidance and control technology for achieving the hit-to-kill accuracy against targets performing evasive maneuvers including spiraling motion is developed on the basis of high (second) order sliding mode control (HOSM). The integration of guidance and flight control systems is achieved in a two-loop guidance and flight control system designed in the combined state space of engagement kinematics and vehicle dynamics. The designed guidance-control system performance is verified via computer simulations using miniature hypervelocity kinetic energy endo-atmospheric interceptor planar model. Copyright © 2005 IFAC.

关键词： Sliding mode control

来源：评论

学校读者我要写书评

暂无评论

A cots simulation package emulator (CSPE) for investigating cots simulation package interoperability

A cots simulation package emulator (CSPE) for investigating ...

引用

2005 Winter Simulation Conference

作者： Wang, Xiaoguang Turner, Stephen John Taylor, Simon J. E. Low, Malcolm Yoke Hean Gan, Boon Ping Parallel and Distributed Computing Centre School of Computer Engineering Nanyang Technological University 639798 Singapore Singapore Centre for Applied Simulation Modeling School of Information Systems Computing and Mathematics Brunel University Uxbridge UB8 3PH United Kingdom D-SIMLAB Programme Singapore Institute of Manufacturing Technology 71 Nanyang Drive 638075 Singapore Singapore

ISBN: (纸本)0780395204

Commercial Off-The-Shelf (COTS) Simulation Packages (CSPs) are widely used to facilitate the creation of simulation models using some kind of visual interactive interface. CSPs have "evolved" over the years and are well used to support modeling demands in different market niches and domains. However, in terms of distributed simulation, there is almost a complete lack of support for interoperability. The advent of the High Level Architecture (HLA) standard makes it possible to connect distributed model components together. The model components can be developed using specific CSPs best suited to the application area. In this paper, a CSP Emulator (CSPE) is proposed to investigate the interfaces between the CSPs and the HLA Runtime Infrastructure. In addition to support for standalone models as provided by current CSPs, the CSPE has some new features needed for building distributed models. An evaluation is conducted between CSPE and Simul8, one of the popular CSPs.

关键词： Electronics packaging

来源：评论

学校读者我要写书评

暂无评论

ONLINE TRAFFIC LIGHT CONTROL THROUGH GRADIENT ESTIMATION USING STOCHASTIC FLUID MODELS

引用

IFAC Proceedings Volumes 2005年第1期38卷 90-95页

作者： Christos G. Panayiotou William C. Howell Michael Fu Department of Electrical and Computer Engineering University of Cyprus Nicosia Cyprus Department of Mathematics Applied Mathematics Scientific Computation Program University of Maryland College Park MD 20742 USA Smith School of Business and Institute for Systems Research University of Maryland College Park MD 20742 USA

In this paper, we consider the problem of dynamically regulating the timing of traffic light controllers in busy cities. We use a Stochastic Fluid Model (SFM) to model the dynamics of the queues formed at an intersection. Based on this model, we derive gradients of the queue lengths with respect to the green/red light lengths within a signal cycle. We report preliminary numerical results comparing the performance of the estimates with finite-difference and smoothed perturbation analysis estimates. Then all estimators are used to optimize the traffic system via Stochastic Approximation.

关键词： Traffic control perturbation analysis stochastic approximation

来源：评论

学校读者我要写书评

暂无评论

Novel vibro-acoustical technology for pipe deposition monitoring

引用

International Journal of COMADEM 2005年第4期8卷 24-32页

作者： Gelman, L. Jenkin, P. Petrunin, I. Sanderson, M. Thompson, C. Cranfield University National Technical University of Ukraine Cranfield University Department of Process and Systems Engineering Applied Mathematics and Computing Group Cranfield Beds MK43 0AL United Kingdom Applied Mathematics and Computing Group Cranfield University National Technical University of Ukraine KPI Department of Process and Systems Engineering Department of Fluid Instrumentation School of Engineering Cranfield University Centre for Computer Vision and Image Processing

Deposits (waxes, hydrates, etc.) change the damping properties of pipelines. The damping ratio of the pipeline increases with increments in deposit thickness. Thus, the evaluation of the damping ratio of the pipeline provides a condition monitoring of the pipeline deposits. Deposits could, be detected by monitoring the vibro-acoustical response of the pipeline while it is subjected to vibration excitation. Vibro-acoustical pipeline condition monitoring is a promising technology, but it has been little investigated. A novel vibro-acoustical technology of deposit detection in pipelines is proposed, developed, and validated through simulation. A new generic feature representation approach is used. Comparison of the proposed technology with the traditional technology based on the magnitude of the frequency response function is undertaken using simulation (by the Simulink) and Monte Carlo procedure. It is shown that the proposed technology provides an essential monitoring effectiveness gain vs. that of the technology based on the magnitude of the frequency response function. Thus, the proposed technology significantly improves the accuracy of vibro-acoustical deposit monitoring in pipelines. © 2005 COMADEM International.

关键词： Condition monitoring

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：