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International Conference on Apperceiving Computing and Intelligence Analysis, ICACIA

作者： Zi-Xin Liu Shu Lv Shou-Ming Zhong Mao Ye School of Applied Mathematics University of Electronic Science and Technology Chengdu China School ofApplied Computer Science and Engineering University of Electronic Science and Technology Chengdu China

In this paper, a class of linear switched systems with time delays is investigated. At the same time, the impulsive effects and parametric uncertainty assumed to be norm-bounded are considered. Some novel exponentially stable criteria are obtained by constructing appropriate Lyapunov-Krasovskii functional. The validity of the results is shown by one numerical example.

关键词： Uncertainty Switched systems Delay effects Stability criteria Asymptotic stability mathematics Parametric statistics Educational institutions Finance computer science

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A Scalable Mathematical QoS Model for IP Networks

A Scalable Mathematical QoS Model for IP Networks

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3rd International Conference on Information and Communication Technologies, vol.5

作者： El-Bahlul Fgee William J. Phillips William Robertson A. Elhounie A. Smeda Department of Computer Engineering & Information Technology School of Applied Science and Engineering Academy of Graduate Studies Tripoli Libya Department of Engineering Mathematics and Internetworking Dalhousie University Tripoli Libya

Significant challenges has been introduced for IP networks with the advent of new emerging applications, such as VOIP and E-Commerce, that require delivering quality guarantees. However, IP networks were originally designed to support best effort delivery only. Two Quality of Service (QoS) standard models, IntServ, DiffServ have been standardized by the Internet engineering Task Force (IETF). Although these methods guarantee delivery, they have drawbacks such as complexity, restrictions of predefined classes and higher end-to-end delay. In this paper, a new QoS mathematical model has been proposed This model is based on the principles of Network Calculus in which an incoming traffic flow is regulated by an arrival curve that upper bounds its rate. Then, this traffic flow is lower bounded and delayed by a service latency time at each node on its way to the destination node. The worst case end-to-end delay is derived and illustrated by a numerical example. The proposed model has achieved acceptable end-to-end delay compared with the other models.

关键词： Mathematical model IP networks Delay Quality of service Telecommunication traffic Traffic control Internet telephony Diffserv networks Web and internet services Calculus

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Clustering of High-Dimensional Gene Expression Data with Feature Filtering Methods and Diffusion Maps

Clustering of High-Dimensional Gene Expression Data with Fea...

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International Conference on BioMedical engineering and Informatics (BMEI)

作者： Rui Xu Steven Damelin Boaz Nadler Donald C. Wunsch Dept. of Electrical & Computer Engineering Missouri University of Science & Technology Rolla MO USA School of Applied and Computational Mathematics University of the Witwatersrand Wits South Africa Dept. of Computer Science and Applied Mathematics Weizmann Institute of Science Rechovot Israel

The importance of gene expression data in cancer diagnosis and treatment by now has been widely recognized by cancer researchers in recent years. However, one of the major challenges in the computational analysis of such data is the curse of dimensionality, due to the overwhelming number of measures of gene expression levels versus the small number of samples. Here, we use a two-step method to reduce the dimension of gene expression data. At first, we extract a subset of genes based on the statistical characteristics of their corresponding gene expression measurements. For further dimensionality reduction, we then apply diffusion maps, which interpret the eigenfunctions of Markov matrices as a system of coordinates on the original data set in order to obtain efficient representation of data geometric descriptions, to the reduced data. A neural network clustering theory, Fuzzy ART, is applied to the resulting data to generate clusters of cancer samples. Experimental results on the small round blue-cell tumor (SRBCT) data set, compared with other widely-used clustering algorithms, demonstrate the effectiveness of our proposed method in addressing multidimensional gene expression data.

关键词： Gene expression Filtering Cancer Data analysis Data mining Eigenvalues and eigenfunctions Neural networks Fuzzy neural networks Subspace constraints Neoplasms

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An Evaluation of TDD Training Methods in a Programming Curriculum

An Evaluation of TDD Training Methods in a Programming Curri...

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2008 IEEE International Symposium on IT in Medicine and Education(2008信息技术在医学和教育中的应用国际研讨会)(ITME 2008)

作者： Li-Ren Chien Daniel J.Buehrer Chin-Yi Yang Chyong-Mei Chen Department of Computer and Science Engineering National Chung Cheng University Hsin Kuo High School Department of Computer and Science Engineering National Chung Cheng University Hsin Kuo High School Department of Applied Mathematics Providence University

This paper evaluates an innovative training method which is based on TDD (Test Driven Development) and implemented in an automatic online judge system named *** running the automatic grading system DICE at Hsing Kuo High school in Taiwan for years, we found that some students were left out by the DICE system. We needed a more sophisticated mechanism to assist underachievers. Our solution was to utilize TDD as an extension of the DICE system to promote learning performance in *** implemented DICE with TDD and have applied the innovative training method in the programming curriculum at Hsin Kuo High school in Taiwan for one semester. Simultaneously we conducted an experiment with a control and experimental group to estimate the efficiency of DICE with *** finding is that DICE with TDD improves the mean scores of learners by 50.88％ over the control group.

关键词： Programming profession Writing Educational programs System testing Software engineering Information technology computer science education mathematics Automatic testing Automatic control

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Robust stability and H-infinity control for uncertain discrete-time Markovian jump singular systems

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控制理论与应用（英文版） 2008年第2期6卷 133-140页

作者： Shuping MA Chenghui ZHANG Xinzhi LIU School of Mathematics and System Science Shandong University Jinan Shandong 250100 China School of Computer Science and Technology Shandong University Jinan Shandong 250061 China School of Control and Engineering Shandong University Jinan Shandong 250061 China Department of Applied Mathematics University of Waterloo Waterloo Ontario N2L 3G1 Canada

The robust stability and stabilization, and H-infinity control problems for discrete-time Markovian jump singular systems with parameter uncertainties are discussed. Based on the restricted system equivalent （r.s.e.） transformation and by introducing new state vectors, the singular system is transformed into a discrete-time Markovian jump standard linear system, and the linear matrix inequality （LMI） conditions for the discrete-time Markovian jump singular systems to be regular, causal, stochastically stable, and stochastically stable with 7- disturbance attenuation are obtained, respectively. With these conditions, the robust state feedback stochastic stabilization problem and H-infinity control problem are solved, and the LMI conditions are obtained. A numerical example illustrates the effectiveness of the method given in the oaoer.

关键词： Discrete-time singular system Markovian jump system Robust stability and stabilization H-infinitycontrol Linear matrix inequality（LMI）

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Mid-infrared subwavelength polarization optics with plasmonic nanostructures

Mid-infrared subwavelength polarization optics with plasmoni...

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IEEE Photonics Conference (IPC)

作者： Ahmet Ali Yanik Xihua Wang Shyamsunder Erramilli Hatice Altug School of Electrical and Computer Engineering Boston MA USA Department of Physics MA USA Department of Applied Mathematics and Theoretical Physics University of Cambridge Cambridge UK

We present an experimental demonstration of polarization controlled extraordinary light transmission in rectangular coaxial aperture arrays at mid-infrared wavelengths. Shape anisotropy is utilized for total suppressi... 详细信息

关键词： Optical polarization Plasmons Nanostructures Geometrical optics Lighting control Coaxial components Apertures Optical arrays Shape Anisotropic magnetoresistance

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Stability and L2-Gain Analysis for Switched Neutral Systems

Stability and L2-Gain Analysis for Switched Neutral Systems

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International Conference on Apperceiving Computing and Intelligence Analysis, ICACIA

作者： Du-Yu Liu Shou-Ming Zhong Yuan-Qing Huang School of Applied Mathematics University of Electronic Science and Technology of China Chengdu China Department Computer Science and Applications Sichuan University of Science and Engineering Zigong China

This paper considers the stability and L 2 -gain for a class of switched neutral systems. Sufficient conditions for exponential stability criteria and L 2 -gain are developed for arbitrary switching signal with averag... 详细信息

关键词： Stability analysis Switched systems Symmetric matrices Stability criteria Lyapunov method Delay effects Control systems Eigenvalues and eigenfunctions mathematics computer science

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RFID Networking Mechanism Using Address Management Agent

RFID Networking Mechanism Using Address Management Agent

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International Conference on Networked Computing and Advanced Information Management (NCM)

作者： Dong Geun Yoon Dong Hyeon Lee Chang Ho Seo Seong Gon Choi Department of Applied Mathematics KongJu National University ChungNam South Korea School of Electrical & Computer Engineering ChungBuk National University Cheonghu Chungbuk South Korea

The ubiquitous network aims at the communication using IP between entities by the converged network like BcN. RFID is the core technology for comprising ubiquitous network. RFID is also applied to the above features. In RFID network, the communication has to be possible. In this paper, we propose a networking mechanism using address management agent so that networking using IP in RFID. Network mechanism using address management agent receives RFID tag ID of various length and generates IP address. Also, the information of RFID tag ID and IP address is mapped and it stored in address management agent. By using the mapping information stored in the address management agent, RFID is able to make the networking using IP between RFID tags.

关键词： Radiofrequency identification IP networks Servers Internet Resource management Databases Standardization

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Unitary design of radar waveform diversity sets

Unitary design of radar waveform diversity sets

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Asilomar Conference on Signals, Systems & computers

作者： Michael D. Zoltowski Tariq R. Qureshi Robert Calderbank William Moran School of Electrical and Computer Engineering Purdue University West Lafayette IN USA Center for Applied and Computational Mathematics Engineering Quadrangle Princeton University Princeton USA Department of Electrical and Electronic Engineering University of Melbourne Australia

ISBN: (纸本)9781424429400

In this work, multiple radar waveforms are simultaneously transmitted, emitted from different ldquovirtualrdquo antennas. The goal is to process the returns in such a way that the overall ambiguity function is a sum of ambiguity functions better approximating the desired thumbtack shape. A 4times4 example involves two spatially separated antennas with each able to transmit and receive simultaneously on two different polarizations. The 4times4 unitary design dictates the scheduling of the waveforms over the four virtual antennas over four PRIs (pulse repetition intervals), and how the matched filtering of the returns over four PRIs is combined in to achieve both perfect separation (of the superimposed returns) and perfect reconstruction. Perfect reconstruction means the sum of the time-autocorrelations associated with each of the four waveforms is a delta function. Conditions for both perfect separation and perfect reconstruction are developed, and a variety of waveform sets satisfying both are presented.

关键词： Radar antennas Propagation delay Transmitting antennas Polarization Matched filters Filtering Doppler radar mathematics Transceivers Structural beams

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Experimental Studies of a Fractional Order Universal Adaptive Stabilizer

Experimental Studies of a Fractional Order Universal Adaptiv...

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IEEE/ASME International Conference on Mechtronic and Embedded Systems and Applications, MESA

作者： Shayok Mukhopadhyay Yan Li YangQuan Chen Electrical and Computer Engineering Department Utah State University Logan UT USA Institute of Applied Math School of Mathematics and System Sciences Shandong University Jinan China

This work performs experimental verification of the asymptotic stability of two different types of fractional scalar systems by using universal adaptive stabilization as in. The types of systems verified experimentally are: (I) Fractional dynamics with integer order control strategy (II) Fractional dynamics with fractional order control strategy. The Mittag-Leffler function E alpha (-lambdat alpha ), forallalphaisin (2, 3] and lambda > 0 is used as a Nussbaum function as per [1]. Extensive hardware in the loop simulation of the mathematically developed results have been included in the paper. The results of the experiment serve not only to improve the understanding of fractional order universal adaptive stabilization but also proves that the methodology works well on real world systems.

关键词： Control systems Fractional calculus Adaptive control Hardware Asymptotic stability Programmable control mathematics Analytical models Laboratories Testing

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