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16th International Workshop on Cellular Nanoscale Networks and Their Applications, CNNA 2018

作者： Iriyama, Taishi Sato, Masatoshi Otake, Tsuyoshi Aomori, Hisashi Tanaka, Mamoru Graduate School of Engineering Tamagawa University Tokyo Japan Department of Software Science Tamagawa University Tokyo Japan Department of Information System Technology Chukyo University Aichi Japan Department of Information and Communication Sciences Sophia University Tokyo Japan

ISBN: (纸本)9783800747665

In this paper, we propose a novel color filter array (CFA) interpolation technique based on color difference correlation model. The difference model exploits the inter-channel correlation, where the interpolation is achieved by using the color differences R-G and B-G. At first the green channel is handled, and the other color channels are estimated based on the result of green channel. Missing color difference values are estimated by using discrete-time cellular neural network (DT-CNN) predictor. First, the DT-CNN transforms color difference values into the optimal coefficients which make possible to establish the optimal prediction using the quincunx A-template. Then, the optimal missing color differences are obtained by using the convolution of the B-template which is derived by rotating the A-template. Moreover, we utilize self-congruence property in order to improve the prediction performance around edges. Experimental evaluation shows that the proposed method has a better performance compared with the conventional method. © VDE VERLAG GMBH.

关键词： Interpolation

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Compact Microwave Passive Components Based on the Metamaterial Unit Cells

Compact Microwave Passive Components Based on the Metamateri...

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Progress in Electromagnetics Research Symposium - Fall (PIERS - FALL)

作者： Jian Li Liang Ma Wenxian Zheng Yongjun Yang Yongjun Huang Zhengwu Xu Gui Li Dongliang Zhang Guangjun Wen School of Information and Communication Engineering University of Electronic Science and Technology of China Chengdu China Tsinghua Shenzhen International Graduate School Shenzhen China Yibin Intelligent Information System Institute University of Electronic Science and Technology of China Yibin China The 10th Research Institute of China Electronics Technology Group Corporation Chengdu China

ISBN: (数字)9781728153049

ISBN: (纸本)9781728153056

In this paper, the research achievements for the compact microwave passive components based on the new kind of metamaterial unit cell are presented. The discussed microwave passive components include the basic bandpass filter, diplexer, and triplexer. The fundamental realization mechanism, the numerical optimization, and the experimental demonstration for those several components are presented in this paper.

关键词： Resonant frequency Couplings Microwave photonics Microwave communication Microwave circuits Frequency measurement

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Study on the Characteristics of Mercury-based Electromagnetic Metamaterials and Its Temperature Sensing Technology

Study on the Characteristics of Mercury-based Electromagneti...

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Progress in Electromagnetics Research Symposium - Fall (PIERS - FALL)

作者： Hualong Yu Liang Ma Wenxian Zheng Yongjun Yang Yongjun Huang Jian Li Zhengwu Xu Gui Li Dongliang Zhang Guangjun Wen School of Information and Communication Engineering University of Electronic Science and Technology of China Chengdu China Tsinghua Shenzhen International Graduate School Shenzhen China Yibin Intelligent Information System Institute University of Electronic Science and Technology of China Yibin China The 10th Research Institute of China Electronics Technology Group Corporation Chengdu China

ISBN: (数字)9781728153049

ISBN: (纸本)9781728153056

In this paper, we study the working mechanism, resonant structure, and design method of mercury-based electromagnetic metamaterials, as well as the mechanism and approach to achieve high Q factor, high sensitivity. We also explore the analysis process of mercury-based electromagnetic metamaterials under different types of resonant modes (Anapole, Fano, and EIT), including the resonance Q-factor characteristics and its control mechanism, study the variation and dynamic range of the resonance characteristics.

关键词： Q-factor Metals Temperature Resonant frequency Electromagnetic metamaterials Sensitivity

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Characteristic evaluation of the mobile acoustic communication for spherical underwater robots (SUR III) 15

Characteristic evaluation of the mobile acoustic communicati...

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15th IEEE International Conference on Mechatronics and Automation, ICMA 2018

作者： Gu, Shuoxin Guo, Shuxiang Zheng, Liang Graduate School of Engineering Kagawa University Takamatsu Kagawa761-0396 Japan Department of Intelligent Mechanical Systems Engineering Kagawa University Takamatsu Kagawa761-0396 Japan Key Laboratory of Convergence Medical Engineering and System and Healthcare Technology Ministry of Industry Information Technology School of Life Science Beijing Institute of Technology Haidian District Beijing100081 China

ISBN: (纸本)9781538660720

The wireless communication as a key technology for the underwater robot will implement the underwater observing, cooperation or collaboration. This paper focuses on the Underwater Acoustic Communication (UWAC) for the third-generation spherical underwater robot (SUR III) which has the advantages like good flexibility, convenience and wide spread. An UWAC system is established for the SUR III. Considering that UWAC needs to overcome the multi-path effects, time-varying effects, narrow available bandwidth and doppler effects, a Micron data modem is chosen as the communication module. This modem uses the CHIRP signal which can change the frequency with time to achieve the acoustic communication. The hardware of the UWAC system is established by using the eZdsp board. This system as a subsystem serves the overall control of the SUR III. With the relative movement of the underwater robot in actual work in mind, the mobile acoustic communication is proposed. The influence of the Doppler shift and propagation loss underwater for the SUR III are analyzed. The experiments for the mobile modem underwater and multi-path effect are carried out to verify its communication performance. And there is no Bit Error Rate (BER) in a specific range. © 2018 IEEE.

关键词： Underwater acoustic communication

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Generative adversarial network based on chaotic time series

arXiv

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arXiv 2019年

作者： Naruse, Makoto Matsubara, Takashi Chauvet, Nicolas Kanno, Kazutaka Yang, Tianyu Uchida, Atsushi Department of Information Physics and Computing Graduate School of Information Science and Technology University of Tokyo 7-3-1 Hongo Bunkyo-ku Tokyo113-8656 Japan Department of Mathematical Engineering and Information Physics Faculty of Engineering University of Tokyo 7-3-1 Hongo Bunkyo-ku Tokyo113-8656 Japan Department of Computational Science Graduate School of System Informatics Kobe University 1- 1 Rokkodai Nada Kobe Hyogo657-8501 Japan Department of Information and Computer Sciences Saitama University 255 Shimo-Okubo Sakura-ku Saitama Saitama338-8570 Japan

Generative adversarial network (GAN) is gaining increased importance in artificially constructing natural images and related functionalities wherein two networks called generator and discriminator are evolving through adversarial mechanisms. Using deep convolutional neural networks and related techniques, high-resolution, highly realistic scenes, human faces, among others have been generated. While GAN in general needs a large amount of genuine training data sets, it is noteworthy that vast amounts of pseudorandom numbers are required. Here we utilize chaotic time series generated experimentally by semiconductor lasers for the latent variables of GAN whereby the inherent nature of chaos can be reflected or transformed into the generated output data. We show that the similarity in proximity, which is a degree of robustness of the generated images with respects to a minute change in the input latent variables, is enhanced while the versatility as a whole is not severely degraded. Furthermore, we demonstrate that the surrogate chaos time series eliminates the signature of generated images that is originally observed corresponding to the negative autocorrelation inherent in the chaos sequence. We also discuss the impact of utilizing chaotic time series in retrieving images from the trained generator. Copyright © 2019, The Authors. All rights reserved.

关键词： Generative adversarial networks

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Characteristic evaluation of the shell outlet mechanism for a magnetic-actuated screw jet microrobot in pipe 15

Characteristic evaluation of the shell outlet mechanism for ...

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15th IEEE International Conference on Mechatronics and Automation, ICMA 2018

作者： Wang, Zixu Guo, Shuxiang Wei, Wei Graduate School of Engineering Kagawa University Takamatsu Kagawa761-0396 Japan Key Laboratory of Convergence Medical Engineering System and Healthcare Technology Ministry of Industry and Information Technology School of Life Science and Technology Beijing Institute of Technology Haidian District Beijing100081 China Department of Intelligent Mechanical Systems Engineering Kagawa University Takamatsu Kagawa761-0396 Japan

ISBN: (纸本)9781538660720

This paper carried out series of simulations and experiments for the characteristic evaluation of a Magnetic Actuated Screw Jet Microrobot (SJM), we can get the conclusion and contribution of the best characteristic of shell outlet by this paper, and make a great progress of microrobot design by analyzing the results. The first part in this paper is some information about background and related research of the capsule microrobots, there are some problems or disadvantages of proposed microrobots also the design concept of our research will be put forward, as for the second section, it is introducing the structure design of SJM, we will show the details and give the research purpose of this paper. Then we will introduce the 3-axis Helmholtz coils, it is the power module in this research, the driving principle and propulsive force theory are also been shown in this section. Finally, the last part is about simulation setup and experiment of outlet size, combining the simulation results and experimental results, we will discuss the optimal choice of the design by the simulation in an ideal environment and the comparison of experimental results. © 2018 IEEE.

关键词： Screws

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Classical reconstruction of interference patterns of position-wave-vector–entangled photon pairs by the time-reversal method

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Physical Review A 2018年第2期97卷 023823-023823页

作者： Kazuhisa Ogawa Hirokazu Kobayashi Akihisa Tomita Graduate School of Information Science and Technology Hokkaido University Sapporo 060-0814 Japan School of System Engineering Kochi University of Technology Tosayamada-cho Kochi 782-8502 Japan

The quantum interference of entangled photons forms a key phenomenon underlying various quantum-optical technologies. It is known that the quantum interference patterns of entangled photon pairs can be reconstructed classically by the time-reversal method; however, the time-reversal method has been applied only to time-frequency–entangled two-photon systems in previous experiments. Here, we apply the time-reversal method to the position-wave-vector–entangled two-photon systems: the two-photon Young interferometer and the two-photon beam focusing system. We experimentally demonstrate that the time-reversed systems classically reconstruct the same interference patterns as the position-wave-vector–entangled two-photon systems.

关键词： Photon pairs & parametric down-conversion Imaging & optical processing Optical second-harmonic generation

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On the effectiveness of using network device state information for network path selection

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Procedia Computer science 2018年 130卷 134-141页

作者： Janaka Wijekoon Divya Amunugama Hiroaki Nishi Dept. of Information System Engineering Faculty of Computing SLIIT Sri Lanka Hiroaki Nishi Laboratory Graduate School of Science and Technology Keio University Japan

Network path selection defines the methodology of selecting the best routes and forwarding traffic in a network service provider (NSP). NSPs use routing protocols that are optimized for a single arbitrary metric (i.e., administrative weight), which is commonly calculated according to the link state information, to select network paths. Despite the advantages, link-state protocols lack the ability to select network paths by considering the states of network devices such as the effect of routers for network path selection. Apparently, studying possible techniques for selecting network paths based on the state information of network devices, e.g., routers, has become obligatory. This paper studies the effectiveness of using network device state information for network path selection by presenting the Extended Server Link Router state Routing Protocol (ESLR). ESLR uses the state information of network devices as parameters to calculate a composite route metric; ESLR selects the network paths based on the cumulative propagation delay. By simulating ESLR using an ISP topology, the proposed protocol is examined for the effectiveness of using network device state information for network path selection.

关键词： Loop-free Hybrid Routing Protocol Routing Utilization Traffic engineering

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A Study of Practical Education Program on AI, Big Data, and Cloud Computing through Development of Automatic Ordering system

A Study of Practical Education Program on AI, Big Data, and ...

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Big Data, Cloud Computing, Data science & engineering (BCD)

作者： Sachio Saiki Naoki Fukuyasu Kohei Ichikawa Tetsuya Kanda Masahide Nakamura Shinsuke Matsumoto Shinichi Yoshida Shinji Kusumoto Graduate School of System Informatics Kobe University Faculty of Systems Engineering Wakayama University Graduate School of Science and Technology Nara Institute of Science and Technology Graduate School of Information Science and Technology Osaka University School of Information Kochi University of Technology

An innovative engineer who can address a social challenge using big data processing, AI and cloud computing technologies with the generation of new business and value is required from industry. enPiT is an education project to develop the advanced IT engineer based on practical education in cooperation between industry and academia promoted by Ministry of Education, Culture, Sports, science and Technology (MEXT) of Japan. In this paper, we introduce how we designed PBL centered curriculum named AiBiC Spiral under the framework of enPiT education project, and analyze educational effect of our program based on work products and the questionnaire result targeting students who took and completed to the program of 2017.

关键词： Big Data Predictive models Cloud computing Meteorology Seminars Machine learning

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Structure improvement and stability for an amphibious spherical robot 15

Structure improvement and stability for an amphibious spheri...

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15th IEEE International Conference on Mechatronics and Automation, ICMA 2018

作者： Zheng, Liang Guo, Shuxiang Gu, Shuoxin Graduate School of Engineering Kagawa University Takamatsu Kagawa761-0396 Japan JiLin Agricultural Science and Technology University Jilin Jilin132101 China Department of Intelligent Mechanical Systems Engineering Kagawa University Takamatsu Kagawa761-0396 Japan Key Laboratory of Convergence Medical Engineering and System and Healthcare Technology Ministry of Industry Information Technology School of Life Science Beijing Institute of Technology Haidian District Beijing100081 China

ISBN: (纸本)9781538660720

This paper proposed a novel mechanical design method of stability system and structure improvement for the new underwater robot is discussed, and also describes the key technologies and methods in detail of the robot to achieve multiple degrees of freedom. The new robot has ability of adjusting direction and perform specific mission goals. The ANSYS water pressure test and resistance test were performed on the mechanical structure under water intent to evaluate the design rationality of the robot leg and the overall robot. The article also introduced the stability system of the underwater robot and the installation and control method of the servo motors. Finally, the speed and gait stability of the robot underwater and land are analyzed through lots of experiments. © 2018 IEEE.

关键词： Degrees of freedom (mechanics)

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