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Computing dynamically equivalent realizations of biochemical reaction networks with mass conservation

AIP Conference Proceedings 2013年第1期1558卷 2356-2359页

作者： János Rudan Gábor Szederkényi Katalin M. Hangos Faculty of Information Technology Pázmány Péter Catholic University Práter u. 50/a H-1083 Budapest Hungary Faculty of Information Technology Pázmány Péter Catholic University Práter u. 50/a H-1083 Budapest Hungary and Process Control Research Group Computer and Automation Research Institute Hungarian Academy of Sciences. Hungary Process Control Research Group Computer and Automation Research Institute Hungarian Academy of Sciences. Kende u. 13-17 H-1111 Budapest Hungary and Dept. of Electrical Engineering and Information Systems Faculty of Information Technology Univer Hungary

An algorithm for the computation of mass conservative dynamically equivalent chemical reaction network structures is proposed in this paper. The algorithm is formulated in an optimization-based framework as a mixed-in...

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Evaluations of different Simultaneous Localization and Mapping (SLAM) algorithms

Evaluations of different Simultaneous Localization and Mappi...

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38th Annual Conference on IEEE Industrial Electronics Society, IECON 2012

作者： Tuna, Gurkan Gulez, Kayhan Cagri Gungor, V. Veli Mumcu, T. Trakya University Department of Computer Programming Edirne Turkey Yildiz Technical University Electrical-Electronics Faculty Control and Automation Eng. Dept. Istanbul Turkey Bahcesehir University Faculty of Engineering Department of Computer Engineering Istanbul Turkey

ISBN: (纸本)9781467324212

Simultaneous Localization and Mapping (SLAM) algorithms with multiple autonomous robots have received considerable attention in recent years. In general, SLAM algorithms use odometry information and measurements from exteroceptive sensors of robots. The accuracy of these measurements and the performance of the corresponding SLAM algorithm directly affect the overall success of the system. This paper presents comparative performance evaluations of three Simultaneous Localization and Mapping (SLAM) algorithms using Extended Kalman Filter (EKF), Compressed Extended Kalman Filter (CEKF) and Unscented Kalman Filter (UKF). Specifically, it focuses on their SLAM performances and processing time requirements. To show the effect of CPU power on the processing time of SLAM algorithms, two notebooks and a netbook with different specifications have been used. Comparative simulation results show that processing time requirements are consistent with the computational complexities of SLAM algorithms. The results we obtained are consistent with the CPU power tests of independent organizations and show that higher processing power decreases processing time accordingly. The results also show that CEKF is more suitable for outdoor SLAM applications where there are a lot of natural and artificial features. © 2012 IEEE.

关键词： Extended Kalman filters

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On the estimation of hyperparameters for Bayesian system identification with exponentially decaying kernels

On the estimation of hyperparameters for Bayesian system ide...

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IEEE Conference on Decision and control

作者： F. Carli T. Chen A. Chiuso L. Ljung G. Pillonetto Dept. of Information Engineering Universty of Padova Italy Division of Automatic Control Linköping University Division of Automatic Control Linköping University Sweden

ISBN: (纸本)9781467320658

A Bayesian formulation of system identification problems has become popular recently; this is mainly due to the introduction of a family of prior descriptions (kernels) which encode structural properties of dynamical systems such as stability. The simplest instance of this kernel prescribes that the impulse response coefficients are independent random variables with exponentially decaying variance. Selecting the most suitable kernel within this class, which involves tuning the rate at which variance decay, is an important step. This paper studies the properties of the so-called “marginal likelihood” approach providing an interpretation in terms of Mean Squared Error properties of the resulting estimators.

关键词： Kernel Estimation Vectors Bayesian methods Finite impulse response filter Noise Equations

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Implement of Fuzzy Logic system using table lookup scheme by Java language to predict time series data

Implement of Fuzzy Logic system using table lookup scheme by...

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International Carpathian control Conference (ICCC)

作者： J. Kokes N.B Nghien Dept. of Automatic control and Engineering Informatics Czech Technical University in Prague Prague Prague Czech Republic Czech Republic Dept. of Automatic control and Engineering Informatics Czech Technical University in Prague Prague Czech Republic

Forecasting the future time series values from the past values plays important role in daily life. There are some techniques support for time series analysis such as statistics, Neural Network (NN), Fuzzy Logic (FL) and fusion NN and FL. However, there is lack of easy, free and visual tools for users to analysis time series data. In this paper we try to use Java program language to implement of Fuzzy Logic system using table lookup scheme to predict time series data. The results of our experiments show that our tool can give a high accuracy of prediction results. Since program is written in Java language so it can run across hardware and software platform and easily embed into website for user run through Internet.

关键词： Time series analysis Training Fuzzy logic Testing Java Exchange rates Table lookup

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GNURadio, Scilab, Xcos and COMEDI for data acquisition and control: An open source alternative to labVIEW

GNURadio, Scilab, Xcos and COMEDI for data acquisition and c...

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8th International Symposium on Advanced control of Chemical Processes, ADCHEM 2012

作者： Patil, Jagdish Y. Dubey, Balashish Moudgalya, Kannan M. Peter, Rakesh Department of Systems and Control Engineering IIT Bombay Mumbai 400076 India Department of Chemical Engineering IIT Bombay Mumbai 400076 India Department of Chemical Engineering and Systems and Control Engineering IIT Bombay Mumbai 400076 India Dept. of Computer Science Amrita University Coimbatore India

ISBN: (纸本)9783902823052

This article describes an attempt to create an open source equivalent to the data acquisition and control software LabVIEW. The proposed solution uses GNURadio, OpenCV, Scilab, Xcos and COMEDI on Linux. GNURadio gives a convenient graphical front end. The computations can be carried out using OpenCV or Scilab and Xcos. The device drivers given in COMEDI are used to access real time data. We also present PyGTK based improved graphical user interface for GNURadio. © 2012 IFAC.

关键词： Graphical user interfaces

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Using constrained cubic spline instead of natural cubic spline to eliminate overshoot and undershoot in Hilbert Huang Transform

Using constrained cubic spline instead of natural cubic spli...

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International Carpathian control Conference (ICCC)

作者： J. Kokes N.B Nghien Dept. of Automatic control and Engineering Informatics Czech Technical University in Prague Prague Czech Republic

Hilbert-Huang Transform (HHT), proposed by N. E. Huang in 1998, is a novel algorithm for nonlinear and non-stationary signal processing. The key part of this method is decomposition the signal into finite number of Intrinsic Mode Functions (IMF) which will meet the requirements of Hilbert Transform. In this part, the algorithm uses natural cubic spline to connect all local maxima and local minima to produce upper and lower envelope of the signal. However natural cubic spline which may lead overshoot and undershoot at intermediate point. In this paper we propose to apply constrained cubic spline into first part of the HHT to eliminate overshoot in upper and lower envelope. We also propose an improvement on Improved Slope Base Method (ISBM) to limit swing at the end points. The experiments showed that our proposals get better result than original proposal and speed up Empirical Mode Decomposition (EMD) process.

关键词： Splines (mathematics) Proposals Equations Mathematical model Oscillators Transforms Complexity theory

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Robust LMI control of a Buck-Boost Converter with Low Ripple Propagation

Robust LMI Control of a Buck-Boost Converter with Low Ripple...

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Mediterranean Conference on control & Automation

作者： J.V. Inglés P. Garcés R. Leyva Dept. of Electronic Electrical and Automatic Control Engineering Universitat Rovira i Virgili Tarragona Spain

ISBN: (纸本)9781467325301

This paper proposes a new robust control strategy to prevent the current ripple propagation into the dc-dc converter input, thus avoiding converter malfunctions. Concretely, we apply the new strategy to a buck-boost converter. The strategy is based on LMI control and use readily, fast convex optimization algorithms to obtain the solution. The control objective is maximizing the current disturbance rejection, where current ripple propagation and usual, prescribed dynamic performances are ensured. The paper describes the control design procedure, besides an illustrative example and simulation verifications. Simulation waveforms are in perfect agreement with objective function and performances constraints of the control design. That is, the current ripple propagation is almost zero and other prescribed constraints are satisfied.

关键词： Robust LMI control Buck-Boost Converter Low Ripple Propagation

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Pathway Estimation for Vision Based Road Following Suitable for Unstructured Roads

Pathway Estimation for Vision Based Road Following Suitable ...

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International Conference on control, Automation, Robotics and Vision

作者： Zdenek Prochazka Dept. of Computer and Control Engineering Oita National College of Technology

ISBN: (纸本)9781467318716

This paper presents a novel method for monocular vision based pathway estimation. In this context, the pathway means a trajectory which an autonomous vehicle should follow to avoid departure from the road. The proposed method is based on our previous work on road region segmentation, and exploits the road region extracted from monocular sequential images to estimate parameters of the pathway model. Since the proposed method doesn't require road surface marking, it is suitable for unstructured roads, while it still works for structured roads too. The proposed method is tested on real image sequences and compared with edge based techniques.

关键词： Road Sight Monocular Vision Autonomous Vehicles image sequences Pathway based region segmentation

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Dealing with open-answer questions in a peer-assessment environment

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11th International Conference on Advances in Web-Based Learning, ICWL 2012

作者： Sterbini, Andrea Temperini, Marco Computer Science Sapienza University of Rome Via Salaria. 113 00198 Rome Italy Dept. Computer Control and Management Engineering Sapienza University of Rome Via Ariosto. 25 00185 Rome Italy

ISBN: (纸本)9783642336416

Correction of open answers questions is an heavy task as, in principle, all the students answers have to be graded. In this paper we give evidence of the possibility to reduce the teacher's workload on open questions questionnaires, by a module managing a rough constraint-based model of the students' decisions, involved in a peer-assessment task. By modeling students decisions we relate their competences on the topic (K) to their ability to judge (J) others' work and to the correctness (C) of their own (open) answer. The network of constraints and relations established among the above variables through the students' choices, allows us to constraint the set of possible values of the answers' correctness (C). Our system suggests what subset of the answers the teacher should correct, in order to narrow the set of hypotheses and produce a complete set of grades. The model is quite simple, yet sufficient to show that the number of required corrections is as small as half of the initial answers. In order to show this result, we report on an extensive set of simulated experiments which answer to three research questions: 1) is the method described able to deduce the whole set of grades with few corrections? 2) what set of parameters is best to run actual experiments? 3) is the model "robust" respect to simulations with high probability of random data? © 2012 Springer-Verlag.

关键词： Students

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A traffic management scheme using multi-channel sniffer for secure wireless networks 12

A traffic management scheme using multi-channel sniffer for ...

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6th International Conference on Ubiquitous Information Management and Communication, ICUIMC'12

作者： Min, Wei Kim, Keecheon Ping, Wang Dept. of Computer Science and Engineering Konkuk University Seoul Korea Republic of Key Laboratory of Network Control and Intelligent Instrument Chongqing University of Posts and Telecommunications Ministry of Education Chongqing China

ISBN: (纸本)9781450311724

In this paper, we propose an efficient and accurate traffic management scheme by using multi-channel sniffer and analyzer tool for wireless networks. It is very important to manage data traffic in wireless network. Our methods include a channel resource optimization scheme by using centralized channel assignment algorithms and an intrusion detection scheme using traffic prediction algorithms. For performance evaluation of our mechanism, we use the wireless data measured from a real wireless test networks. Simulation result shows that the scheme could manage the multi-channel status of the networks and present the analysis result to network manager for the network resource configuration. The security manager could detect the intrusion attack to improve the whole performance of the system, and the intrusion detection ratio is acceptable to enhance the security efficiently. © 2012 ACM.

关键词： Intrusion detection

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