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Dynamic watermarking scheme based on the Shamir threshold and branch structure

Jilin Daxue Xuebao (Gongxueban)/Journal of Jilin University (engineering and Technology Edition) 2008年第SUPPL. 2期38卷 221-225页

作者： Yin, Ke Wang, Zhi-Quan Zhu, Jian-Qi Dong, Gang School of Automation Nanjing University of Science and Technology Nanjing 210094 China Electric Power Simulation and Control Engineering Center Nanjing Institute of Technology Nanjing 211167 China Key Laboratory of Symbol Computation and Knowledge Engineer College of Computer Science and Technology Jilin University Changchun 130012 China

A novel dynamic software watermark scheme based on the Shamir threshold and branch structure is presented. First, we split the watermark into a set of shares using the Shamir threshold scheme. Second, these values are encrypted with the DES block cipher that forms the watermark shares to be embedded into different methods of program according to the dynamic behavior of the branch structure. Our scheme can withstand most semantics-preserving attacks and can retrieve the original watermark based on partial information. Simulation tests show that our scheme is very robust, stealthy and has a high price performance rate compared with other methods.

关键词： Semantics

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A Neuro-Fuzzy controller for Rotary Cement Kilns

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IFAC Proceedings Volumes 2008年第2期41卷 13259-13264页

作者： Maryam Fallahpour Alireza Fatehi Babak N. Araabi Morteza Azizi Control & Intelligent Processing Center of Excellence School of Electrical & Computer Eng. University of Tehran Tehran Iran Advanced Process Automation & Control (APAC) Research Group Electrical Engineering Faculty K. N. Toosi University of Technology Tehran Iran Saveh Cement Co. Saveh Iran

In this paper, we design a neurofuzzy controller to control several variables of a rotary cement kilns. The variables are back-end temperature, pre-heater temperature, oxygen content and CO2 gas content of the kiln. The fuzzy control system, as an advanced control option for the kilns, is intended to minimize the operator interaction in the control process. The proposed fuzzy controller uses a neural network to optimize TSK-type fuzzy controller. Since there is no generally applicable analytical model for cement kilns, we use the real data derived from Saveh cement factory for the plant identification. A model, which is very similar to the real plant, is identified then; and the identified model is used for control design and simulations. Extensive simulation studies justify the effectiveness and applicability of the proposed control scheme in intelligent control of cement plant.

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Guaranteed Dominant Pole Placement with PID controllers

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IFAC Proceedings Volumes 2008年第2期41卷 5842-5845页

作者： Qing-Guo Wang Zhiping Zhang Karl Johan Astrom Yu Zhang Yong Zhang Department of Electrical and Computer Engineering National University of Singapore Singapore Department of Automatic Control Lund Institute of Technology Sweden Global Research Shanghai GE China Technology Center Pudong Shanghai 201203 China

Pole placement is a well-established design method for linear control systems. Note however that with an output feedback controller of low-order such as PID one cannot achieve arbitrary pole placement for a high-order or delay system, and then partially or hopefully, dominant pole placement becomes the only choice. To the best of the authors’ knowledge, no method is available in the literature to guarantee dominance of the assigned poles in the above case. This paper proposes two simple and easy methods which can guarantee the dominance of the assigned two poles for PID control systems. They are based on Root-Locus and Nyquist plot, respectively. If a solution exists, the parametrization of all the solutions is explicitly given. Examples are provided for illustration.

关键词： PID controllers Dominant Poles Pole Placement Root-Locus Nyquist Plot

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TerraSAR-X: Complex Image Inversion for Feature Extraction

TerraSAR-X: Complex Image Inversion for Feature Extraction

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IEEE International Symposium on Geoscience and Remote Sensing (IGARSS)

作者： Matteo Soccorsi Mihai Datcu Dusan Gleich German Aerospacec Center Remote Sensing Technology Institute Wessling Germany Laboratory for Signal Processing and Remote Control Faculty of Electrical Engineering and Computer Science University of Maribor Slovenia

In this paper we present two algorithms for information extraction from Single Look Complex (SLC) Synthetic Aperture Radar (SAR) images. The first algorithm is based on Tikhonov regularization with Total Variation (TV) and a Point-Based Feature (PBF) term. Based on the equivalence of Tikhonov and the Bayesian estimate, the second algorithm is a Maximum A Posteriori (MAP) estimation with a complex-valued Gauss-Markov Random Field (GMRF) in addition to the TV prior. The first algorithm produces a despeckled image preserving fine details and texture. The second algorithm gives a denoised image and in addition the estimated feature parameter vector thetas.

关键词： Feature extraction Synthetic aperture radar Signal processing algorithms TV Bayesian methods Image restoration Adaptive filters Cost function Anisotropic magnetoresistance Speckle

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Achieving high-bandwidth nanopositioning in presence of plant uncertainties

Achieving high-bandwidth nanopositioning in presence of plan...

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IEEE/ASME (AIM) International Conference on Advanced Intelligent Mechatronics

作者： Sumeet S. Aphale Santosh Devasia S. O. Reza Moheimani ARC Center of Complex Dynamic Systems and Control University of Newcastle Callaghan NSW Australia Mechanical Engineering Department University of Washington Seattle WA USA School of Electrical and Computer Engineering University of Newcastle Callaghan NSW Australia

ISBN: (纸本)9781424424948

In the absence of plant parameter uncertainties, inversion-based feedforward techniques have been known to deliver accurate tracking performance. Due to changes in operating conditions like ambient temperature, humidity and loading, piezoelectric-stack actuated nanopositioning platforms can undergo significant changes in their system parameters. Nonlinear effects of hysteresis, an inherent property of a piezoelectric actuator, are also present; charge actuation is applied to reduce the effects of hysteresis. In this work, a suitable feedback controller that reduces the effects of parameter uncertainties is integrated with the inversion-based feedforward technique to deliver accurate nanopositioning over a large bandwidth. It is shown experimentally that by integrating closed-loop damping, inversion-based feedforward and charge actuation, the tracking bandwidth of the platform from can be increased significantly from 310 Hz to 1320 Hz.

关键词： Feedforward neural networks Bandwidth Resonant frequency Harmonic analysis Nanopositioning Uncertainty Damping

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Multichannel Adaptive Stochastic Filtering for Active Noise control in Personal computers

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IFAC Proceedings Volumes 2008年第2期41卷 10154-10159页

作者： Charles E. Kinney Intae Lee Raymond de Callafon Mehrban Jam System Identification and Control Laboratory Department of Mechanical and Aerospace Engineering University of California San Diego La Jolla California 92093-0411 USA Institute for Neural Computation & Department of Electrical and Computer Engineering University of California San Diego La Jolla California 92093-0411 USA Hewlett-Packard Laboratories MMSL 1501 Page Mill Road Palo Alto CA 94304

In this paper, the feasibility of using active noise control inside personal computers is demonstrated by applying an adaptive filter to Hewlett-Packard's Blackbird 002 Gaming PC. Conditions relating the control signals and the sound heard by an external listener are presented as a means of evaluating the hardware design before applying the adaptive filter. A multichannel stochastic adaptive filter is derived by vectorizing the equations and applying gradient descent and Newton's method. For implementation purposes, data-based approximations to the gradient and hessian are provided. It is shown that a 6dB reduction in sound pressure level is obtainable by adding reference microphones, error microphones, a speaker, and some acoustical foam into the system even though the length of the noise cancelation system is small, approx. 6”, compared to the fundamental wavelength of the noise, approx 23”.

关键词： Noise control Feedforward control Multichannel Adaptive Filters Stochastic Approximation

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Approximation of a map and its derivatives with an RBF Network using input-output clustering

Approximation of a map and its derivatives with an RBF Netwo...

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International Joint Conference on Neural Networks (IJCNN)

作者： Fatemeh Tahersima Babak Nadjar Araabi Control and Intelligent Processing Center of Excellence School of Electrical & Computer Engineering University of Tehran Tehran Iran School of Cognitive Sciences Institute of Studies in Theoretical Physics and Mathematics Tehran Iran

Radial Basis Function Networks (RBFNs) are widely used in curve-fitting problems and nonlinear dynamical systems modelling. Using the gradient of the function during the training phase leads to a smooth approximation of both the function itself, and its derivatives. The knowledge about gradient of the function in some identification and control tasks is desired, particularly when the stability and robustness of the system are studied. In this paper, a new clustering based algorithm for learning an Input-Output map along with its derivatives using RBFN is proposed. The input-output clustering (IOC) algorithm for the training of an RBFN is modified to improve the performance of the network in approximating a nonlinear single-input single-output map along with its derivatives utilizing a set of input-output data and the first derivative of the function in each data point. The advantage of the proposed algorithm, in comparison with orthogonal least square (OLS), is demonstrated with an example in the field of data interpolation.

关键词： Training data Approximation algorithms Approximation methods Clustering algorithms Function approximation Training Artificial neural networks

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engineering education societies becoming global

Engineering education societies becoming global

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2008 ASEE Annual Conference and Exposition

作者： Morell, Lueny Borri, Claudio Rajala, Sarah Ramakrishna, Seeran Quadrado, Jose Carlos Petrie, Maria M. Larrondo Fraser, Duncan Laporte, Bruno Garboan, Adriana Fouger, Xavier Hoyer, Hans Hewlett-Packard Department of Chemical Engineering University of Puerto Rico Mayagüez Puerto Rico Universita' di Firenze Department of Computational Mechanics of Structures University of Florence Italy SEFI IFEES Within Socrates II Mississippi State University Department of Electrical and Computer Engineering Mississippi State University National University of Singapore Instituto Superior de Engenharia de Lisboa Portugal ISEL Research and Project Center on Electrical Machines Control and Applications Florida Atlantic University Academic and International Affairs for the College of Engineering and Computer Science Florida Atlantic University International Federation of Engineering Education Societies Latin American and Caribbean Consortium of Engineering Institutions University of Cape Town Academic Development Faculty of Engineering and the Built Environment UCT World Bank Human Development Development Group World Bank Institute Politechnica University of Bucharest Politehnica University of Bucharest Faculty of Electronics and Telecommunications Dassault Systemes Dassault Systemes Global Learning Leads the PLM Academy American Society for Engineering Education International Programs and Strategy ASEE

Globalization is making both developed and developing countries think about effective and efficient strategies that will advance their economies and social development. Throughout the history of civilization, engineering has played a critical role in economic development. Engineers are key not only in solving local problems but also in knowledge creation and knowledge transfer. Thus, it is imperative that technical know-how be supplemented with professional skills to develop an 'adaptive leader' who is capable of addressing the multiple challenges of an ever changing world. The key-question posed by the 21st century global economy to engineering educators and stake-holders is this: "How can education in science and technology help to reduce poverty, boost socio-economic development, and take the right decisions for sustainable and environmental compatible development?" To answer these questions, a global approach is needed: and this can only be accomplished by a "team" which has its roots in all regions of the world, i.e. which is enabled to think globally and then act locally. There's a need to establish effective engineering education processes of high quality around the world to assure a global supply of well-prepared engineering graduates. This paper describes the reasons for the creation in October 2006 of IFEES - the International Federation of engineering Education Societies. It will describe the vision, mission, and key strategies of IFEES. It will also describe some of the initiatives currently underway and how the various engineering education stakeholders can leverage and benefit from engaging with IFEES, thus strengthening the organizational capacity of engineering education societies throughout the world. The paper will share plans to help members learn from each other's best practices and even failures and how those organizations that have been in existence for quite some time (ASEE was founded in the late 19th century) can contribute to the institutio

关键词： engineering education

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Automatic Detection of Red Blood Cells in Hematological Images Using Polar Transformation and Run-length Matrix

Automatic Detection of Red Blood Cells in Hematological Imag...

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2008 9th International Conference on Signal Processing(ICSP’2008)

作者： S.H.Rezatofighi A.Roodaki R.A.Zoroofi R.Sharifian H.Soltanian-Zadeh Control and Intelligent Processing Center of Excellence Department of Electrical and Computer EngineeringFaculty of EngineeringUniversity of TehranTehran 14395-515Iran HematologyOncology and BMT Research Center Tehran University of Medical SciencesTehranIran Control and Intelligent Processing Center of Excellence Univ.of TehranTehranIran Henry Ford Hospital DetroitMIUSA

Many of diseases related to red blood cells can be diagnosed by analyzing the hematological *** first step is to locate precisely the position of red blood *** this paper,a novel method based on polar transformation and run-length matrix is proposed for detecting red blood cells in hematological *** multilayer perceptron was employed for classifying the feature *** technique detected 3022 of the 3092 red blood cells existed in the images *** results illustrate capability of the proposed method for detecting red blood cells in hematological images.

关键词： image red Automatic Detection of Red Blood Cells in Hematological Images Using Polar Transformation and Run-length Matrix

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Segmentation of Nucleus and Cytoplasm of White Blood Cells Using Gram-Schmidt Orthogonalization and Deformable Models

Segmentation of Nucleus and Cytoplasm of White Blood Cells U...

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2008 9th International Conference on Signal Processing(ICSP’2008)

作者： S.H.Rezatofighi R.A.Zoroofi R.Sharifian H.Soltanian-Zadeh Control and Intelligent Processing Center of Excellence Department of Electrical and Computer EngineeringFaculty of EngineeringUniversity of TehranTehran 14395-515Iran Hematology-Oncology and BMT Research Center Tehran University of Medical SciencesTehranIran Control and Intelligent Processing Center of Excellence Univ.of TehranTehranIran Henry Ford Hospital DetroitMIUSA

Automatic recognition of white blood cells in hematological can be divided into four major parts:preprocessing,image segmentation,feature extraction and *** to the multifarious nature of these cells and uncertainty in the hematological images,segmentation of white blood cells is one of the most important stages in this process.A scrupulous segmentation obviously reduces errors of next *** this paper,we introduce a novel method based on Gram-Schmidt process and parametric deformable models for segmenting the nucleus and ***,we propose a new preprocessing method for improving the results of cytoplasm ***,for finding the initial contour for parametric deformable model,an automatic scheme is *** results show that our proposed method is capable of segmenting the white blood cells in the hematological *** evaluate the proposed algorithm quantitatively,we compare its results with the manual segmentations by a *** study shows robustness of the proposed *** feature of the proposed method is that it is simple to implement.

关键词： image Segmentation of Nucleus and Cytoplasm of White Blood Cells Using Gram-Schmidt Orthogonalization and Deformable Models Nucleus

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