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2009 4th International Conference on Innovative Computing, information and Control, ICICIC 2009

作者： Nagata, Kazuo Dounoue, Satoshi Koshi, Kazuhiro Miyoshi, Masazumi Kiyota, Kimiyasu Depertment of Information Communication and Electronic Engineering Kumamoto National College of Technology Kumamoto Japan Advanced Course of Electronics and Information Systems Engineering Kumamoto National College of Technology Kumamoto Japan Department of Human-Oriented Information Systems Engineering Kumamoto National College of Technology Kumamoto Japan

ISBN: (纸本)9780769538730

The basis of the e-learning system used in most educational institutions is a character representation by a web browser. This has caused a decrease in usability. It's user interface is not easy for beginners. Therefore, the user comes to have to study the manner of operation of the system before original study. This paper proposes the GI (Gesture Interface) as an operation method for e-learning system. Users can operate e-learning system viscerally by using GI. We have implemented and evaluated some gestures for object based e-learning system that has made on Adobe Flash. This system recognizes two positions and motions of user's fingers from an USB web camera. This allows users to give the system several gestures. © 2009 IEEE.

关键词： User interfaces

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Analysis of the performance of robotic assembly systems considering the usage of tools or jigs for the task-board task in the WRS 2018

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advanced Robotics 2023年第20期37卷 1329-1346页

作者： Dobashi, Hiroki Ogawa, Koki Shibata, Mizuho Uemura, Wataru Yokokohji, Yasuyoshi Faculty of Systems Engineering Wakayama University Wakayama Japan Graduate School of Systems Engineering Wakayama University Wakayama Japan Department of Robotics Faculty of Engineering Kindai University Higashi-Hiroshima Japan Electronics Information and Communication Engineering Course Faculty of Advanced Science and Technology Ryukoku University Otsu Japan Department of Mechanical Engineering Graduate School of Engineering Kobe University Kobe Japan

A task-board task is a task in which robots perform a set of fundamental assembly operations related to the assembly of a specific product such as inserting a part into another part, tightening bolts and nuts, attaching flexible parts, etc. In the task-board task competition in the industrial robotics category of the World Robot Summit (WRS) 2018, 15 teams from around the world performed the task. In our previous work, we observed recorded videos of the competition frame by frame and manually investigated the performance of robotic systems of the top four teams, focusing only on whether robots contact target parts. In this paper, we introduce frame sets to represent mainly contact states between robots, tools, or jigs and target parts to be handled for such a frame-by-frame analysis of the recorded videos, and based on the frame sets, we analyze the performance of robotic assembly systems of other teams as well as the top four teams in the task-board task competition in the WRS 2018, considering the usage of tools or jigs. © 2023 Informa UK Limited, trading as Taylor & Francis Group and The Robotics Society of Japan.

关键词： Robotic assembly

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Resource Allocation in UAV-NOMA Communication systems Based on Proportional Fairness

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Journal of Communications and information Networks 2020年第2期5卷 111-120页

作者： Hui Zhang Baoji Wang Chen Chen Xiang Cheng Hang Li State Key Laboratory of Advanced Optical Communication Systems and Networks Department of ElectronicsSchool of Electronics Engineering and Computer SciencePeking UniversityBeijing 100871China Shanghai Institute of Microsystem and Information Tech-nology Chinese Academy of SciencesShanghai 200050China Data-Driven Information System Laboratory Shenzhen Re-search Institute of Big DataShenzhen 518172China

This paper investigates the power allocation problem in non-orthogonal multiple access(NOMA)integrated unmanned aerial vehicle(UAV)communication *** particular,we propose a novel resource allocation scheme to increase the transmission rate of the users that have relatively worse channel state information,while reducing the sum rate *** solve this problem efficiently,we decouple the optimization problem into three ***,we solve the problem of user pairing and subchannel ***,the optimum power proportional factor is derived to allocate transmit power among different users on the same *** last,different subchannels are allocated with appropriate power to improve the performance of the *** results show that the proposed scheme can enjoy a better performance than the benchmark methods since it can achieve a proper trade-off between the system sum rate and the proportional fairness.

关键词： UAV communications NOMA power allo-cation proportional fairness

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Feature Extraction of Gait Data via PCA and Personal Identification Using Neural Networks 9

Feature Extraction of Gait Data via PCA and Personal Identif...

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9th International Conference on Big Data Analytics, ICBDA 2024

作者： Nishimura, Kazuki Ishida, Akio Murakami, Jun Yamamoto, Naoki National Institute of Technology Kumamoto College Advanced Course of Electronics and Information Systems Engineering Kumamoto Japan National Institute of Technology Kumamoto College Faculty of Liberal Arts Kumamoto Japan National Institute of Technology Kumamoto College Faculty of Electronics and Information Systems Engineering Kumamoto Japan

ISBN: (纸本)9798350352962

Gait analysis is used in a wide range of fields, including clinical applications such as diagnosis and rehabilitation, investigation of gender and racial differences, and personal identification, which is important in forensic investigations and security. In recent years, gait data can be obtained from force plates, 3D motion capture, RGB cameras, and so on. In this study, we applied principal component analysis (PCA) to gait data captured with an RGB camera and analyzed the main data characteristics. However, the data used here is joint information whose posture is estimated using neural networks (NN) from gait videos taken with the camera. Furthermore, we created a NN model for personal identification using data whose dimensionality was reduced using PCA and attempted the identification. © 2024 IEEE.

关键词： Phishing

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Color prediction in an lcd using rgb-led backlights 49th

Color prediction in an lcd using rgb-led backlights

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49th SID International Symposium, Seminar and Exhibition, dubbed Display Week, 2012

作者： Choi, Seo Young Park, Du Sik Kim, Chang Yeong Schanda, Janos Kranicz, Balazs Csuti, Peter Advanced Media Lab SAIT Samsung Electronics Yongin-si Korea Republic of Dept. of Electrical Engineering and Information System Univ. of Pannonia Hungary

The CIE standard color matching function is used in the description of color characteristics for stimuli reproduced on displays given that these represent visual sensitivity accurately. If this is not the case, the consequent estimation using the functions would be deviated from what we perceive. This study demonstrates the significant errors caused by applying the current standard color matching function for predicting visual results of color stimuli displayed on an LCD monitor equipped with RGB-LED backlights. The modified version of the standard color matching function is also introduced with its verification results in the reduction of prediction errors. © 2012 SID.

关键词： Forecasting

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Creating 3DCG Animation with a Network of 3D Depth Sensors

Creating 3DCG Animation with a Network of 3D Depth Sensors

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2016 International Conference on Sustainable Energy, Environment and information engineering (SEEIE 2016)

作者： Ning-ping SUN Yohei YAMASHITA Ryosuke OKUMURA Dept. of Human-Oriented Information System Engineering Kumamoto College Advanced Electronics and Information Systems Engineering Course National Institute of TechnologyKumamoto College

The motion capture is a useful technique for creating animations instead of manual labor,but the expensive camera based devices restrict its practical application. The emerging of inexpensive small size of depth-sensing devices provides us opportunities to reconstitute motion capture *** introduced a network of 3D depth sensors into the production of real time 3DCG *** to the existing system, the new system works well for data communication and anime rendering. We discuss below server how communicate with a group of sensors, and how we operate a group of sensors in the rendering of animation. Some results of verification experiments are provided as well.

关键词： Depth sensor Network 3D computer graphics Animation production

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Research on Metamaterial Technology for Microwave Wireless Power Transfer

Research on Metamaterial Technology for Microwave Wireless P...

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2024 International Symposium on Antennas and Propagation, ISAP 2024

作者： Yamamoto, Tsunayuki Kobashi, Takeo Maruyama, Tamami Department of Integrated Science and Technology National Institute of Technology Tsuyama College Tsuyama-shi Japan Advanced Electronics and Information System Engineering Course National Institute of Technology Tsuyama College Tsuyama-shi Japan Department of Production Systems Engineering Institute of Technology Hakodate College Hakodate-shi Japan

ISBN: (纸本)9798350364774

In this paper, two technologies of metamaterial for microwave wireless power transfer are shown. One is a zeroth-order resonance for a microwave snow melting system, and another one is a focusing reflector for realizing of a highly efficient wireless power transfer space. A zeroth-order resonance leads a uniformed microwave heating and a flexibility of feeding in a snow melting system. Focusing reflector can make some electromagnetic hot and null points in a space. These are expected to be required technologies for highly efficient wireless power transfer. © 2024 IEEE.

关键词： Reflection

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A design of bilateral servo system with self-tuning function

A design of bilateral servo system with self-tuning function

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International Conference on advanced Mechatronic systems (ICAMechS)

作者： Hirofumi Ohtsuka Tomoaki Nakamura Dept. of Control and Information System Engineering Kumamoto National College of Technology Kumamoto Japan Kumamoto National College of Technology Advanced Course of Electronics and Information System Engineering Kumamoto Japan

Manual micromanipulation requires for operators to have enough experience and outstanding skill. A bilateral servo system attempts to convert difficult tasks so as to be felt easier for skilled operators. One of such a bilateral servo system, which reduces the displacement and expands the force, has been proposed by Kikuchi and Shiraishi[1]. However, concerning to the offset between a master manipulator's stiffness and a slave manipulator's one, its adverse effects of the operation stability becomes remarkable for the change of operator's dynamics. In an actual use, such offset may cause a heavy damage of the manipulated object by the operation. In this study, we propose a self-tuning mechanism which can eliminate such offset problem. And we have confirmed the effectiveness of the proposed method by numerical simulation.

关键词： Manipulators Force Numerical simulation Servomotors Steady-state

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Research on applied technology with a continues method for unit commitment problem

Research on applied technology with a continues method for u...

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2nd International Conference on Mechanics, Dynamic systems and Material engineering, MDSME 2014

作者： Yang, Lin Feng Li, Jie Ge, Zhi Hui Guangxi Key Laboratory of Manufacturing System and Advanced Manufacturing Technology School of Computer and Electronics and Information Guangxi University Nanning 530004 Guangxi China Department of Computer Electronics and Information Engineering Guangxi Polytechnic Nanning 530226 Guangxi China

ISBN: (纸本)9783038351337

A continue method based on relaxation is applied to solve the unit commitment problem (UCP). At first, the primal UCP is reformulated as a simple mixed integer quadratic programming (MIQP), and then the MIQP is solved by interior point method (IPM) and commercial software CPLEX. The first continues problem, UCP without integer constraints, can be solved by IPM to get the no integer solution. The second continues problem, an equivalent continues problem of UCP, can be solved starting from the solution obtained in first problem. © (2014) Trans Tech Publications, Switzerland.

关键词： Integer programming

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Generation of 47 fs Pulses from an Er:Fiber Amplifier

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Chinese Physics Letters 2017年第7期34卷 101-104页

作者：欧尚明刘关玉雷卉张志刚张庆茂 School of Information Optoelectronics Science and Technology South China Normal University Guangzhou 510006 State Key Laboratory of Advanced Optical Communication System and Networks School of Electronics Engineering and Computer Science Peking University Beijing 100871 Guangzhou Research Institute Of O-M-E Technology Guangzhou 510663

We demonstrate a self-starting erbium fiber oscillator-amplifier system based on the nonlinear polarization rota- tion mode-locked mechanism. The direct output pulse from the amplifier is 47fs with an average power of 1.22 W and a repetition rate of 50 MHz, corresponding to a pulse energy of 24 nJ. The full width at half-maximum of the spectrum of the output pulses is approximately 93nm at a central wavelength of 1572nm so that the transform- limited pulse duration is as short as 39 fs. Due to the imperfect dispersion compensation, we compress the pulses to 47fs in this experiment.

关键词： Generation of 47 fs Pulses from an Er:Fiber Amplifier

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