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International Conference on Ubiquitous Information Technologies and Applications

作者： Jeong, Taikyeong Han, Seungchul Song, Yongseok Rhee, Seung Hyong Park, Gyungleen Dept. of Electronic Eng. Myongji University Korea Republic of Dept. of System Eng. Dankook University Korea Republic of Dept. of Electronics Convergence Eng. Kwangwoon University Korea Republic of Dept. of Computer Statistics Cheju National University Korea Republic of

ISBN: (纸本)9781424488124

This paper presents the prediction and analysis of a mobility model of people, in short mobility prediction for the mobile wireless network architecture as the essential part of future wireless market trends. To show a mobile connectivity and wireless connection in wireless mesh-network, we utilized urban mobility simulation time with prediction method, and also investigated a large number of mobility flows. We also highlight how to achieve high efficiency by using the neural prediction methods and modeling directly to the mobile wireless network architecture by a software tool and library. Major results of our experimental study demonstrate good scalability and usability of our prediction of mobility model by using a statistical comparison results, and trend of mobility usages. ©2010 IEEE.

关键词： Forecasting

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Design and development of a real-time embedded inertial measurement unit 10

Design and development of a real-time embedded inertial meas...

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25th Annual ACM Symposium on Applied Computing, SAC 2010

作者： Facchinetti, Tullio Savioli, Alberto Goldoni, Emanuele University of Pavia Dept. of Computer Eng. and System Science 27100 - Pavia Italy University of Pavia Dept. of Electronics 27100 - Pavia Italy

ISBN: (纸本)9781605586380

Micro-Electro-Mechanical systems (MEMS) sensors are used nowadays in a wide range of applications, from robotics to entertainment. Recently, this technology has also been adopted to equip Inertial Measurement Units (IMUs) replacing traditional electro-mechanical sensors. In this work we present a low-cost embedded IMU which is based on a low-cost embedded microcontroller with limited resources in terms of computing power and memory. The developed software runs on the top of the ERIKA Enterprise real-time kernel to manage the computing tasks that perform sensor data sampling and processing. Low-cost MEMS accelerometers, gyroscopes and magnetometers provide the required data and a Kalman filter analyses raw values in real-time. Experimental results are obtained using a six degrees of freedom anthropomorphic manipulator to drive the IMU with accurate known trajectory, acceleration and rotation. Performances are evaluated both in terms of sensor fusion effectiveness and real-time execution. © 2010 ACM.

关键词： Computing power

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Nitrogen Gas-Cluster Ion Beam – A New Nitrogen Source for GaN Growth

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MRS Online Proceedings Library 2011年第1期743卷 L3.10.1-L3.10.6页

作者： Shao, Y. Chen, T. C. Fenner, D. B. Moustakas, T. D. Chu, George Epion Corporation of JDS Uniphase Billerica USA Boston Univ. Dept. Electrical & Computer Eng. Boston USA Agere System corp. Bell Lab Murray Hill USA

In this paper we report sapphire nitridation and GaN film growth by using ionized nitrogen clusters as a nitrogen source. The clusters, typically 2000–3000 molecules/charge, are generated by a prototype GCIB source. The clusters are accelerated to 10–25 kV and disintegrate upon impact with the substrate surface where they react with Ga atoms to form GaN. The efficiency of this novel nitrogen source was tested by studying the nitridation of (0001) sapphire substrates at relatively low temperatures of 200 - 400°C. The effect of exposure of the substrate to the nitrogen cluster-ion beam was examined by XPS, RHEED and AFM. It was found that the amount of retained surface nitrogen increases nonlinearly with increasing beam energy. There exists a threshold energy, ∼ 20 kV, above which nitrogen retention is significantly enhanced. GaN films were grown with such nitrogen clusters heteroepitaxially on sapphire/AlN-buffer (MBE grown) and homoepitaxially on thick GaN on sapphire (HVPE grown).TEM cross-section images indicate that the heteroepitaxial GaN films had defect density similar to that of MBE and MOCVD grown films. The homoepitaxially-grown GaN films were found to replicate the GaN templates and show strong cathodoluminescence (CL) emission at 363 nm with FWHM of 9 nm. Furthermore, the spectra show no evidence of yellow band emission.

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Invisible calibration pattern based on human visual perception

IEEJ Transactions on Electronics, Information and Systems

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IEEJ Transactions on Electronics, Information and systems 2010年第8期130卷 1440-1447+19页

作者： Takimoto, Hironori Yoshimori, Seiki Mitsukura, Yasue Fukumi, Minoru Faculty of Computer Science and Syst. Eng. Okayama Prefectural University 111 Kuboki Soja Okayama 719-1197 Japan Dept. of Media Technologies Faculty of Eng. Nippon Bunri University 1727 Ichigi Oita Oita 870-0397 Japan Graduate School of Bio-Applications and System Enginner-ing Tokyo University of Agriculture and Technology 2-24-16 Nakamachi Koganei Tokyo 184-8588 Japan Dept. of Information Science and Intteligent Syst. Faculty of Eng. University of Tokushima 2-1 Minami-Josanjima Tokushima Tokushima 770-8506 Japan

In this paper, we propose an arrangement and detection method of an invisible calibration pattern based on characteristics of human visual perception. A calibration pattern is arranged around contents where invisible data is embedded, as some feature points between an original image and the scanned image for normalization of the scanned image. However, it is clear that conventional methods interfere with page layout and artwork of contents. Moreover, conventional visible patterns show a third person the position of embedded data. Therefore, visible calibration patterns are not suitable for security service. The most important part of human visual perception in the proposed method is the spectral luminous efficiency characteristic and the chromatic spatial frequency characteristic. In addition, a back ground color in surrounding of contents is not restricted to uniform color by using the proposed calibration pattern. It is suggest that the proposed method protect page layout and artwork. © 2010 The Institute of Electrical eng.neers of Japan.

关键词： Image processing

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Dynamic property evaluations of full-scale 4-story steel frame using parallel FE-analysis

Dynamic property evaluations of full-scale 4-story steel fra...

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9th US National and 10th Canadian Conference on Earthquake eng.neering 2010, Including Papers from the 4th International Tsunami Symposium

作者： Kohiyama, M. Ohsaki, M. Miyamura, T. Onda, K. Isobe, D. Akiba, H. Hori, M. Kajiwara, K. Ine, T. Dept. of System Design Eng. Keio University Yokohama 223-8522 Japan Dept. of Architecture and Architectural Eng. Kyoto University Kyoto 615-8540 Japan Dept. of Computer Science College of Eng. Nihon University Koriyama 963-8642 Japan Allied Engineering Corporation Minato-ku Tokyo 105-0014 Japan Graduate School of Systems and Information Eng. University of Tsukuba Tsukuba 305-8573 Japan Earthquake Research Institute University of Tokyo Bunkyo-ku Tokyo 113-0032 Japan Hyogo Earthquake Engineering Research Center National Research Institute for Earth Science and Disaster Prevention Miki 673-0515 Japan

ISBN: (纸本)9781617388446

The project of E-Simulator is under way at Hyogo Earthquake eng.neering Research Center (E-Defense) of National Research Institute of Earth Science and Disaster Prevention (NIED), Japan, which facilitates the world's largest shaking table. The E-Simulator uses the parallel finite element (FE) analysis software package called ADVENTYRECluster (ADVC) as a platform. In this study, we report the results of high-precision FE-analysis for simulation of collapse behavior of the 4-story steel building frame that is the specimen of the full-scale total collapse shaking-table test conducted in September 2007 at E-Defense. It is shown that elastoplastic dynamic responses can be estimated with good accuracy using a high-precision FE-analysis without resort to macro models such as plastic hinge and composite beam effect.

关键词： Finite element method

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Attribute ranking for lateralizing focal epileptogenicity in temporal lobe epilepsy

Attribute ranking for lateralizing focal epileptogenicity in...

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17th Iranian Conference in Biomedical eng.neering, ICBME 2010

作者： Fakhraei, Shobeir Soltanian-Zadeh, Hamid Elisevich, Kost Fotouhi, Farshad Dept. of Computer Science Wayne State University Detroit MI United States Image Analysis Lab. Dept. of Radiology Henry Ford Health System Detroit MI United States CIPCE School of Elec. and Comp. Eng. University of Tehran Tehran Iran Dept. of Neurosurgery Henry Ford Health System Detroit MI United States

ISBN: (纸本)9781424474844

A consensus feature-ranking approach has been applied to the study of localization-related temporal lobe epilepsy (TLE) in order to evaluate the relative discriminative power of individual attributes. Cases were selected on the basis of a postoperative outcome free of disabling seizures (i.e., eng.l class I) in order to establish a definitive laterality of focal epileptogenicity. Several quantitative measures made available by imaging and electrographic studies are considered and the most discriminative of these are quantitatively prioritized for the lateralization of focal epileptogenicity. Cases requiring extraoperative electrocorticography were examined as a subgroup to establish whether the current method of analysis could distinguish laterality sufficiently well to avoid the requirement for intracranial electrode implantation. © 2010 IEEE.

关键词： Data mining

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Consensus feature ranking in datasets with missing values

Consensus feature ranking in datasets with missing values

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9th International Conference on Machine Learning and Applications, ICMLA 2010

作者： Fakhraei, Shobeir Soltanian-Zadeh, Hamid Fotouhi, Farshad Elisevich, Kost Dept. of Computer Science Wayne State University Detroit MI United States Image Analysis Lab. Dept. of Radiology Henry Ford Health System Detroit MI United States CIPCE School of Elec. and Comp. Eng. University of Tehran Tehran Iran Dept. of Neurosurgery Henry Ford Health System Detroit MI United States

ISBN: (纸本)9780769543000

Development of a feature ranking method based upon the discriminative power of features and unbiased towards classifiers is of interest. We have studied a consensus feature ranking method, based on multiple classifiers, and have shown its superiority to well known statistical ranking methods. In a target environment such as a medical dataset, missing values and an unbalanced distribution of data must be taken into consideration in the ranking and evaluation phases in order to legitimately apply a feature ranking method. In a comparison study, a Performance Index (PI) is proposed that takes into account both the number of features and the number of samples involved in the classification. © 2010 IEEE.

关键词： Classification (of information)

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Effect of classifiers in consensus feature ranking for biomedical datasets

Effect of classifiers in consensus feature ranking for biome...

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4th International Workshop on Data and Text Mining in Biomedical Informatics, DTMBIO'10, Co-located with 19th International Conference on Information and Knowledge Management, CIKM'10

ISBN: (纸本)9781450303828

Many informative aspects of medical datasets may be extracted from comparative study of features discriminative power. Recently, consensus feature rankings have been proposed to achieve robust, unbiased and reliable rankings of attributes. We have studied the effect of classifier inclusion in a consensus feature ranking method for a medical dataset with missing values and class imbalanced data. Ability of consensus feature rankings to demonstrate superior performance with unseen classifiers is also studied in this paper.

关键词： Classification (of information)

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A Centralized Network Selection Algorithm Based on Access Router Discovery in Heterogeneous Wireless Networks

A Centralized Network Selection Algorithm Based on Access Ro...

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International Conference on Wireless and Mobile Communications (ICWMC)

作者： Vahid Solouk Borhanuddin Mohd Ali Dept. of Information Technology Eng. Urmia University of Technology Urmia Iran Dept. of Computer System and Communication Eng Universiti Putra Malaysia Serdang Malaysia

Seamless mobility across heterogeneous wireless networks requires a certain level of Quality of Service (QoS) to be assured as it determines the packet loss and delay during handoff procedure. Selecting the target network in an appropriate time plays a crucial role towards achieving ubiquitous networks. This paper proposes a network discovery and selection method called Improved Access Router Discovery (IARD) in a heterogeneous environment comprising of WLAN and UMTS networks. In this method, the nomination of potential networks is performed in core network using a special Weighted Mean (MW) algorithm with each network ranked based on several criteria and the highest rank network is proposed as the target network. This method was tested by means of simulation under various conditions with different traffic types and was shown to result in more appropriate network selections as compared to other methods.

关键词： Bandwidth Wireless networks Protocols Delay Algorithm design and analysis Manganese

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Improving motion of robotic manipulators by an embedded optimizer

Improving motion of robotic manipulators by an embedded opti...

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2010 IEEE International Conference on Automation Science and eng.neering, CASE 2010

作者： Ding, Hao Schnattinger, Georg Passenberg, Benjamin Stursberg, Olaf Institute of Control and System Theory Dept. of Electrical Eng. and Computer Science University of Kassel Germany Institute for High-Frequency Engineering Technische Universität München 80290 München Germany Institute of Automatic Control Engineering Technische Universität München 80290 München Germany

ISBN: (纸本)9781424454471

A control scheme for efficient and safe path and motion planning of industrial robots is proposed. For motion planning of robotic manipulators, an offline method is developed which generates feasible trajectories of the joints such that a given performance criterion is maximized. The planning problem considering obstacle avoidance is converted to an optimization problem with interior points for the joint angles to guide the trajectory away from obstacles. The interior points are generated from an approach of rapidly exploring random trees (RRTs] in the configuration and time space. The method is applied to a 3-DOF-robot with known dynamic moving obstacles and evaluated afterwards. Online motion generation of industrial robots is then discussed for a human robot interaction scenario. ©2010 IEEE.

关键词： Motion planning

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