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International Conference on Intelligent Systems, Modelling and Simulation (ISMS)

作者： Dong Hwa Kim Kahlid Saeed Department of Instrumentation and Control Engineering Hanbat National University South Korea Department of Physics and Applied Computer Science The AGH Technical University of Krakow Poland

This paper proposes the importance of emotion technology for future technology. Emotion technology is absolutely necessary for real human being in future technology such as robot, culture, and design etc. However, it is very difficult to approach and expression effectively emotion function in engineering. Visual system (static and moving status), sound system, and tactile sense can express by physical sensor. However, there are some difficulties about how we can express feeling like human being's hart in engineering. Therefore, those who work in science have to cooperate with researcher in quite difference area such as, literature, designer, psychologist, philosopher, musician, material science, and etc.

关键词： Educational institutions Psychology Awards activities Robots Computational intelligence Humans Instruments

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Adaptive Mean Shift Algorithm Based on Hybridized Bacterial Chemotaxis

Adaptive Mean Shift Algorithm Based on Hybridized Bacterial ...

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2012 International Conference on Modelling,Identification and control(建模、辨别与控制国际会议 ICMIC 2012)

作者： Yanling Li Yi Shen College of Computer and Information Technology Xinyang Normal UniversityXinyang464000China Department of Control Science and Engineering Huazhong University of Science and TechnologyWuhan 43

Mean shift is an effective statistical iterative *** size of bandwidth has great impact on the accuracy and efficiency of the *** not only decides the number of sampling points in the iteration, but also affects the convergence speed and accuracy of the *** this reason, adaptive mean shift algorithm based on hybridized bacterial chemotaxis(HBC) is proposed in this *** HBC, particle swarm operation algorithm (PSO) is introduced before bacterial chemotaxis(BC) *** PSO is firstly introduced to execute the global search, and then stochastic local search works by ***, elitism preservation is used in this paper in order to improve the efficiency of the new *** the proposed new algorithm, bandwidth is calculated by HBC algorithm in which bandwidth is calculated adaptively according to the local structure of sampling *** results show that the proposed algorithm can achieve more robust segmentation results.

关键词： image segmentation mean shift particle swarm operation bacterial chemotaxis algorithm bandwidth

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Constrained time-optimal control for nonlinear systems: A fast explicit approximation

Constrained time-optimal control for nonlinear systems: A fa...

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4th IFAC Conference on Nonlinear Model Predictive control, NMPC'12

作者： Raimondo, D.M. Huber, O. Schulze Darup, M. Mönnigmann, M. Morari, M. Department of Computer Engineering and Systems Science University of Pavia Pavia 27100 Italy Inria Grenoble Rĥone-Alpes 655 avenue de l'Europe Inovallée 38334 Saint Ismier France Automatic Control and Systems Theory Ruhr-Universität Bochum 44780 Bochum Germany Automatic Control Laboratory ETH Zurich 8092 Zurich Switzerland

ISBN: (纸本)9783902823076

We present a method for the calculation of approximate explicit solutions to constrained time-optimal control problems for nonlinear discrete-time systems. We aim to pre-compute offline a low complexity control law that provides feasibility guarantees and fast online computation. Related approaches build on hyperrectangular state space partitions that, unfortunately, lead to a large number of regions. We introduce a method based on a hierarchy of Voronoi diagrams, which leads to partitions with fewer elements. Thereby, we use the aforementioned hyperrectangular partitions as initializations and try to systematically reduce the number of regions. © 2012 IFAC.

关键词： Discrete time control systems

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Classification of microcalcification clusters based on morphological topology analysis

Classification of microcalcification clusters based on morph...

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11th International Workshop on Breast Imaging, IWDM 2012

作者： Chen, Zhili Denton, Erika R. E. Zwiggelaar, Reyer Department of Computer Science Aberystwyth University Aberystwyth SY23 3DB United Kingdom Department of Radiology Norfolk and Norwich University Hospital Norwich NR4 7UY United Kingdom Faculty of Information and Control Engineering Shenyang Jianzhu University Shenyang 110168 China

ISBN: (纸本)9783642312700

The presence of microcalcification clusters is a primary sign of breast cancer. It is difficult and time consuming for radiologists to diagnose microcalcifications. In this paper, we present a novel method for classification of malignant and benign microcalcification clusters in mammograms. We analyse the connectivity/topology between individual microcalcifications within a cluster using multiscale morphology. A microcalcification graph is constructed to represent the topological structure of clusters. A multiscale topological feature vector is generated by extracting two microcalcification graph properties. The validity of the proposed method is evaluated using a dataset taken from the MIAS database. The performance of including SFS feature selection is investigated. Using a k-nearest neighbour classifier, a classification accuracy of 95% and an area under the ROC curve of 0.93 are achieved. A comparison with existing approaches is presented. © 2012 Springer-Verlag Berlin Heidelberg.

关键词： Topology

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Instruction and Data NAND Flash Memory System for Embedded Systems

Instruction and Data NAND Flash Memory System for Embedded S...

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International Conference on Information science and Applications (ICISA)

作者： Cheong-Ghil Kim Jung-Hoon Lee Department of Computer Science Namseoul University CheonAn South Korea ERI Department of Control and Instrument Engineering GyeongSang National University Jinju South Korea

Harvard architecture uses physically separate memories for their instructions and data. In the case of a flash memory with a buffer system, separate data and instruction buffers can lead to diversification of a flash architecture and achieve the high performance by overcoming effectively the limitations of a unified buffer. So, the proposed NAND flash system is composed of two separate buffers for exploiting the characteristics inherent in each module. Also, we propose a new operating mechanism for reducing overhead of flash memory, that is, erase and write operations. According to our simulation results, the write operations and the erase operations are about 60% and 68% less than other unified buffer systems with two times more space, respectively. And also, the average memory access tine is improved by about 70% compared with other unified buffer systems.

关键词： Buffer storage computer architecture Writing Microprocessors Random access memory Flash memory cells

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A combined method for automatic identification of the breast boundary in mammograms

A combined method for automatic identification of the breast...

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International Conference on BioMedical engineering and Informatics (BMEI)

作者： Zhili Chen Reyer Zwiggelaar School of Information and Control Engineering Shenyang Jianzhu University Shenvang China Department of Computer Science Aberystwyth University Aberystwyth United Kingdom

Breast region segmentation is an essential prerequisite in the (semi-)automatic analysis of digital or digitised mammographic images, which aims to separate the breast region from background information in mammograms. It normally consists of two independent segmentations, which are breast-background segmentation and pectoral muscle segmentation, respectively. The first identifies the boundary between the breast and background, and the second identifies the boundary of the pectoral muscle (present in medio-lateral oblique (MLO) views). In this paper, we propose a method for automatic identification of the breast boundary based on a combination of segmentation approaches, including histogram thresholding, edge detection, contour growing, polynomial fitting, and region growing. To demonstrate the validity of the proposed method, it is tested using two mammographic datasets: the full MIAS database and a large dataset taken from the EPIC database. For the breast-background segmentation, 98.8% and 91.5% nearly accurate results are obtained for the MIAS and EPIC data, respectively. For the pectoral muscle segmentation, 92.8% and 87.9% nearly accurate results are achieved for these two datasets. A comparison with two other methods is also provided based on the full MIAS database. These indicate the proposed method performs effectively in identifying the breast boundary in digitised mammograms. The obtained segmentation results can be used for further analysis in computer-aided diagnosis.

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Energy-efficient intrusion detection with a barrier of probabilistic sensors

Energy-efficient intrusion detection with a barrier of proba...

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IEEE Annual Joint Conference: INFOCOM, IEEE computer and Communications Societies

作者： Junkun Li Jiming Chen Ten H. Lai State Key Laboratory of Industrial Control Technology University of Zhejiang China Department of Computer Science and Engineering Ohio State Uinversity USA

ISBN: (纸本)9781467307734

Intrusion detection is a significant application in wireless sensor networks (WSNs). S. Kumar et al have introduced the concept of barrier coverage, which deploys sensors in a narrow belt region to guarantee that any intrusion across the region is to be detected. However, the practical issues have not been investigated such as scheduling sensors energy-efficiently while guaranteeing the detection probability of any intrusion across the region based on probabilistic sensing model, which is a more realistic sensing model. Besides, the intruders may be humans, animals, fighter planes or other things, which obviously have diverse moving speeds. In this paper, we analyze the detection probability of arbitrary path across the barrier of sensors theoretically and take the maximum speed of possible intruders into consideration since the sensor networks are designed for different intruders in different scenarios. Based on the theoretical analysis of detection probability, we formulate a Minimum Weight ∈-Barrier Problem about how to schedule sensors energy-efficiently. We show the problem NP-hard and propose a bounded approximation algorithm, called Minimum Weight Barrier Algorithm (MWBA) to schedule the activation of sensors. To evaluate our design, we analyze the performance of MWBA theoretically and also perform extensive simulations to demonstrate the effectiveness of our proposed algorithm.

关键词： Wireless sensor networks Probabilistic logic Belts Sensor phenomena and characterization Image edge detection Algorithm design and analysis

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On Identification of Linear Systems with Quantized and Intermittent Information

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IFAC Proceedings Volumes 2012年第16期45卷 304-309页

作者： Damián Marelli Minyue Fu School of Electrical Engineering and Computer Science University of Newcastle University Drive Callaghan NSW 2308 Australia Department of Control Science and Engineering Zhejiang University 388 Yuhangtang Road Hangzhou Zhejiang Province 310058 P. R. China

In this paper, we consider a number of technical problems associated with identification of linear systems using quantized and intermittent information. More specifically, we study asymptotic properties for identification of such systems, including strong consistency, asymptotic normality and asymptotic efficiency, and determine their relationship with quantization errors and the packet losses. Furthermore, we discuss how to design quantizers to improve these asymptotic properties. Some open problems will also be proposed.

关键词： System identification quantized signals quantizer design communication networks asymptotic analysis statistical analysis

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A trim distance between positions in nucleotide sequences

A trim distance between positions in nucleotide sequences

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15th International Conference on Discovery science, DS 2012

作者： Makino, Shunsuke Shimada, Takaharu Hirata, Kouichi Yonezawa, Kouki Ito, Kimihito Graduate School of Computer Science and Systems Engineering Kyushu Institute of Technology Kawazu 680-4 Iizuka 820-8502 Japan Department of Artificial Intelligence Kyushu Institute of Technology Kawazu 680-4 Iizuka 820-8502 Japan Department of Computer Bioscience Nagahama Institute of Bio-Science and Technology Tamura 1266 Nagahama 526-0829 Japan Division of Bioinformatics Research Center for Zoonosis Control Hokkaido University North 20 West 10 Sapporo 001-0020 Japan

ISBN: (纸本)9783642334917

In this paper, first we introduce a label-based closest-neighbor trimming method to trim a phylogenetic tree built from nucleotide sequences according to the labels of leaves. Next, by replacing the indices of nucleotide sequences as labels of leaves with the nucleotides occurring in a position, we formulate a trim distance between two positions in nucleotide sequences as the LCA-preserving distance between the trimmed phylogenetic trees according to nucleotides occurring in the positions. Finally, we apply the trim distance to compare pandemic influenza A (H1N1) viruses with non-pandemic ones. © 2012 Springer-Verlag Berlin Heidelberg.

关键词： Nucleotides

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Switching control design for accommodating large step-down disturbances in bipedal robot walking

Switching control design for accommodating large step-down d...

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IEEE International Conference on Robotics and Automation (ICRA)

作者： Hae-Won Park Koushil Sreenath Alireza Ramezani J.W. Grizzle Mechanical Engineering Department University of Michigan Ann Arbor MI USA Control Systems Laboratory Electrical Engineering and Computer Science Department University of Michigan Ann Arbor MI USA

This paper presents a feedback controller that allows MABEL, a kneed, planar bipedal robot, with 1 m-long legs, to accommodate an abrupt 20 cm decrease in ground height. The robot is provided information on neither where the step down occurs, nor by how much. After the robot has stepped off a raised platform, however, the height of the platform can be estimated from the lengths of the legs and the angles of the robot's joints. A real-time control strategy is implemented that uses this on-line estimate of step-down height to switch from a baseline controller, that is designed for flat-ground walking, to a second controller, that is designed to attenuate torso oscillation resulting from the step-down disturbance. After one step, the baseline controller is re-applied. The control strategy is developed on a simplified-design model of the robot and then verified on a more realistic model before being evaluated experimentally. The paper concludes with experimental results showing MABEL (blindly) stepping off a 20 cm high platform.

关键词： Legged locomotion Torso Switches Mathematical model Optimization

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