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Ontology-based design pattern recognition

12th International Conference on Knowledge-Based Intelligent Information and engineering Systems

作者： Kirasic, Damir Basch, Danko Information Support Center University of Zagreb Faculty of Electrical Engineering and Computing Department of Control and Computer Engineering in Automation University of Zagreb Faculty of Electrical Engineering and Computing

ISBN: (纸本)9783540855620

This paper presents ontlology-based architecture for pattern recognition in the context of static source code analysis. The proposed system has three subsystems: parser, OWL ontologies and analyser. The parser subsystem translates the input coded to AST that is constructed as an XML tree. The OWL ontologies define code patterns and general programming concepts. The analyser subsystem constructs instances of the input code as ontology individuals and asks the reasoner to classify them. The experience gained in the implementation of the proposed system and some practical issues are discussed. The recognition system successfully integrates the knowledge representation field and static code analysis. resulting in greater flexibility of the recognition system.

关键词： knowledge-based system ontology-based system static code analysis description logics OWL application formal pattern definition

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Modelling time dependent swelling potential of mudrock using laboratory tests and artificial neural network

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Transactions of the Institutions of Mining and Metallurgy, Section A: Mining Technology 2008年第1期117卷 32-41页

作者： Doostmohammadi, R. Moosavi, M. Araabi, B.N. Mining Engineering Department Zanjan University 5 km Tabriz road Zanjan Iran School of Mining Engineering University of Tehran Iran Control and Intelligent Processing Center of Excellence School of Electrical and Computer Engineering University of Tehran Iran

The focus of this research work is modelling time dependent swelling strain and pressure simultaneously in weak rock. Various swelling potential under different boundary conditions is considered. Free and semiconfined swelling strain and swelling pressure under oedometric condition are the most proposed tests for determination of the swelling potential of weak rock. In this paper, a modified swelling strain and pressure test is introduced using springs to provide deformable axial stiffness. The swelling strain and pressure of mudrock are modelled by artificial neural network for various swellable clay, carbonate, initial water content and different boundary stiffness, by using a combination of the proposed modified test along with the existing tests. This method correlates the results of laboratory tests with an acceptable accuracy. The proper operation of the developed model for predicting the time dependent swelling strain and pressure of mudrock under deformable and rigid axial boundaries is confirmed. © 2008 Institute of Materials, Minerals and Mining.

关键词： Neural networks

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Upper bounds for the secure key rate of the decoy-state quantum key distribution

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Physical Review A 2009年第3期79卷 032335-032335页

作者： Marcos Curty Tobias Moroder Xiongfeng Ma Hoi-Kwong Lo Norbert Lütkenhaus Department of Signal Theory and Communications ETSI Telecomunicación University of Vigo Campus Universitario E-36310 Vigo (Pontevedra) Spain Institute for Quantum Computing University of Waterloo Waterloo Ontario Canada N2L 3G1 Quantum Information Theory Group Institut für Theoretische Physik I and Max-Planck Research Group Institute of Optics Information and Photonics University of Erlangen–Nürnberg 91058 Erlangen Germany Department of Electrical and Computer Engineering and Department of Physics Center for Quantum Information and Quantum Control (CQIQC) University of Toronto Toronto Ontario Canada M5S 3G4

The use of decoy states in quantum key distribution (QKD) has provided a method for substantially increasing the secret key rate and distance that can be covered by QKD protocols with practical signals. The security analysis of these schemes, however, leaves open the possibility that the development of better proof techniques or better classical postprocessing methods might further improve their performance in realistic scenarios. In this paper, we derive upper bounds on the secure key rate for decoy-state QKD. These bounds are based basically only on the classical correlations established by the legitimate users during the quantum communication phase of the protocol. The only assumption about the possible postprocessing methods is that double click events are randomly assigned to single click events. Further, we consider only secure key rates based on the uncalibrated device scenario which assigns imperfections such as detection inefficiency to the eavesdropper. Our analysis relies on two preconditions for secure two-way and one-way QKD. The legitimate users need to prove that there exists no separable state (in the case of two-way QKD) or that there exists no quantum state having a symmetric extension (one-way QKD) that is compatible with the available measurements results. Both criteria have been previously applied to evaluate single-photon implementations of QKD. Here we use them to investigate a realistic source of weak coherent pulses. The resulting upper bounds can be formulated as a convex optimization problem known as a semidefinite program which can be efficiently solved. For the standard four-state QKD protocol, they are quite close to known lower bounds, thus showing that there are clear limits to the further improvement of classical postprocessing techniques in decoy-state QKD.

关键词： Quantum cryptography

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Towards net-centric system of systems robotics in air, sea and land

2008 IEEE International Conference on System of Systems Engi...

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2008 IEEE International Conference on System of Systems engineering, SoSE 2008 2008年

作者： Shaneyfelt, Ted Erdogan, Sevki Maredia, Azim Vemuri, Gnanadeep Pachala, Bhargavaram Yue, Dong Karovalia, Sohel Lu, Ming-Zhu Yang, Shi-Zhong Gao, Chenyu Autonomous Control Engineering Center Electrical and Computer Engineering Department University of Texas San Antonio TX United States

ISBN: (纸本)9781424421732

This paper investigates how we can work towards building net-centric swarms of land, sea and air robots working together to accomplish a common goal. The goal is to bring together swarms of robots from all three sectors to safely benefit mankind without increasing dangers in the process. Several platforms are explored for simulation to investigate swarm robotics within heterogeneous environments. © 2008 IEEE.

关键词： System of systems

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Towards net-centric system of systems robotics in air, sea and land

Towards net-centric system of systems robotics in air, sea a...

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IEEE International Conference on System of Systems engineering (SoSE)

作者： Ted Shaneyfelt Sevki Erdogan Azim Maredia Gnanadeep Vemuri Bhargavaram Pachala Dong Yue Sohel Karovalia Ming-Zhu Lu Shi-Zhong Yang Chenyu Gao Autonomous Control Engineering Center Electrical and Computer Engineering Department University of Texas San Antonio TX USA

关键词： Robot kinematics Orbital robotics Robot sensing systems Bandwidth Taxonomy Topology Personal digital assistants control engineering Automata Software systems

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COMMUNICATIONS FOR UNDERWATER ROBOTICS RESEARCH PLATFORMS

COMMUNICATIONS FOR UNDERWATER ROBOTICS RESEARCH PLATFORMS

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2nd Annual IEEE Internatioal Systems Conference

作者： Kranthimanoj Nagothu Matthew Joordens Mo Jamshidi Autonomous Control Engineering Center Department of Electrical and Computer Engineering University of Texas San Antonio San Antonio TX USA

This paper presents a distributed protocol for communication among autonomous underwater vehicles. It is a complementary approach for coordination between the autonomous underwater vehicles. This paper mainly describes different methods for underwater communication. One of the methods is brute force approach in which messages are broadcasted to all the communication nodes, which in turn will broadcast the acknowledgement. Issues relating to this brute force approach are time delay, number of hops, power consumption, message collision and other practical issues. These issues are discussed and solved by proposing a new method to improve efficiency of this proposed approach and its effectiveness in communication among autonomous underwater vehicles.

关键词： Underwater communication Underwater vehicles Oceans Modems Acoustic propagation Optical fiber cables Marine technology Optical fiber communication Robot kinematics Broadcasting

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Mean square stability analysis of sampled-data supervisory control systems

Mean square stability analysis of sampled-data supervisory c...

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17th IEEE International Conference on control Applications, CCA

作者： Tejada, Arturo Herencia-Zapana, Heber González, Oscar R. Steven Gray, W. Delft Center for Systems and Control TU Delft Netherlands Department of Electrical and Computer Engineering Old Dominion University Norfolk VA 23529-0246 United States

ISBN: (纸本)9781424422234

Testable second moment stability conditions for discrete-time supervisory control systems were recently developed using the Hybrid Jump Linear Systems (HJLS's) framework. These tests are extended here to sampled-data supervisory control systems using the new sampled-data HJLS (SD-HJLS) framework. It is shown first that the p-moment stability of SD-HJLS's equipped with ideal sample and hold operators is equivalent to that of their associated HJLS's. Then, the second moment stability analysis tools developed for HJLS 's are extended to SD-HJLS's. Finally, the results are illustrated through a Monte Carlo simulation of a simple example. © 2008 IEEE.

关键词： Monte Carlo methods

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SENSOR FUSION USING FUZZY INTEGRAL AND DIVERSE BAYESIAN NETWORKS

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IFAC Proceedings Volumes 2008年第2期41卷 10421-10426页

作者： Jamie Walls Albert Esterline Abdollah Homaifar Author Autonomous Control and Information Technology Center (ACIT) Electrical & Computer Engineering Department North Carolina Agricultural & Technical State University Greensboro NC

This paper investigates and contrasts the use of different Bayesian networks and a fuzzy integral for real-time sensor fusion using sonar and rangefinder laser values on an ActivMedia robot. Bayesian networks have become increasingly popular because of their ability to capitalize on the conditional probabilities present in an influence chain. The Choquet fuzzy integral, which has primarily been used for statistical analysis, has a great power of description. Comparison of the two methods indicates that noise within the sensor network can drastically affect the accuracy of the results, especially those obtained using the Bayesian network.

关键词： Information and sensor fusion autonomous robotic systems Data-fusion Multi sensor systems Guidance navigation and control Intelligent robotics

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Distributed protocol for communications among underwater vechiles

2008 IEEE International Conference on System of Systems Engi...

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2008 IEEE International Conference on System of Systems engineering, SoSE 2008 2008年

作者： Nagothu, Kranthimanoj Joordens, Matthew Jamshidi, Mo Autonomous Control Engineering Center Department of Electrical and Computer Engineering University of Texas at San Antonio One UTSA Circle San Antonio TX 78249 United States

ISBN: (纸本)9781424421732

Underwater surveying by swarms of autonomous underwater vehicles presents problems in communication among the robots. These problems involve the bandwidth, power consumption, timing, processing power, and other Issues. This paper presents a novel approach to communicate and coordinate effectively among underwater vehicles to accomplish this task successfully. The proposed approach solves issues by reducing the number of hops to conserve power, while reducing computation time and bandwidth, effectively utilizing resources to reduce the load on each node. Finally, the simulation results are presented, In order to prove that the proposed approach improves efficiency and effectiveness in communicating among underwater vehicles. © 2008 IEEE.

关键词： Bandwidth

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Motion Estimation of a Mobile Robot using different types of 3D Sensors

Motion Estimation of a Mobile Robot using different types of...

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4th International Conference on Autonomic and autonomous Systems

作者： Netramai, Chayakorn Oleksandr, Melnychuk Joochim, Chanin Roth, Hubert Center for Sensor Systems (ZESS) University of Siegen D-57076 Paul-Bonatz-Strasse 9-11 Germany Institute of Automatic Control Engineering Department of Electrical Engineering and Computer Science University of Siegen D-57068 Hoelderlinstrasse 3 Germany

ISBN: (纸本)9781424442355

Motion estimation is one of the most important tasks for autonomous mobile robots. Modern mobile robots are equipped with different types of visual sensors that can provide wide ranges of outputs which can be used as reliable inputs for the computing of the robots displacement. One of the widely used visual sensors on mobile robots is the stereo camera due to its simplicity and availability. However, the recently invented Photonic Mixer Device (PMD) that uses the time of flight principle, also becomes more and more popular because of its robustness against ambient light and weak textured surfaces. This paper introduces the compared results of the motion estimation using two different types of 3D sensors (stereo and PMD) and also suggests a new approach to fuse their data in order to improve the calculation accuracy. An experiment was conducted using a mobile robot where the motion of the robot was evaluated using a least square technique. The results from each sensor were obtained and compared to prove their capability toward the motion estimation task.

关键词： Mobile robots

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