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IEEJ Transactions on electronics, Information and Systems 2016年第2期136卷 101-107页

作者： Takai, Nobukazu Tanaka, Shunsuke Kobori, Yasunori Kobayashi, Haruo Devition of Electronics and Inormation Graduate School of Science and Technology Gunma University 1-5-1 Tenjin-cho Kiryu Gunma376-8515 Japan Education Program of Electronics and Informatics Graduate School of Science and Technology Gunma University 1-5-1 Tenjin-cho Kiryu Gunma376-8515 Japan National Institute of Technology Oyama College Dep. of Innovative Electrical and Electronic Engineering 771 Ohaza-Nakakuki Oyama Tochigi323-0806 Japan

In this paper, we have proposed Single Inductor Dual Output (SIDO) buck-buck and boost-boost DC-DC converter using improved RC ripple regulator control. The proposed SIDO buck-buck converter has the characteristics of lowripple and high control frequency. RC ripple regulator control can not be applied to SIDO boost-boost converter because RC ripple regulator undergoes self-excited oscillation and two self-excited oscillating controllers make the SIDO converter unstable. Thus we proposed the priority circuit for RC ripple regulator control. The proposed control circuit improves response characteristic and simplicity of the control circuit. Simulations are performed to verify the validity of the proposed SIDO converter. Simulation results indicate good performance of the proposed SIDO converter. © 2016 The Institute of Electrical Engineers of Japan.

关键词： Boost converter

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The Effect of Blended Learning Model to Improve the Conceptual Understanding of Computer and Network Engineering Students

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Journal of Physics: Conference Series 2019年第1期1413卷

作者： F M Hawi P Sudira Electronics and Informatics Engineering Education Department Postgraduate Program Universitas Negeri Yogyakarta Yogyakarta Yogyakarta Vocational Technology Education Postgraduate Program Universitas Negeri Yogyakarta Yogyakarta Yogyakarta

Grounded by students' lack of conceptual understanding in identifying and comprehending basic concepts of computer network, this quasi-experimental study aims to identify the effect of applying blended learning model toward the improvement of students' conceptual understanding. It was designed using non-equivalent control group design in which the experimental group and the control group were differently treated using, respectively, blended learning and conventional learning model. There were 58 students selected as the sample of the research; 30 students in experimental class and 28 students in control class. Essay test was chosen to collect the data of the conceptual understanding of the students in both groups. Using MANOVA, the data analysis revealed the significant effect of applying blended learning model toward students' conceptual understanding with P = 0.000 < 0.05 of significance level. In conclusion, the result of study identified that 1) the students who taught using blended learning model performed better mastery of basic concepts of computer network with the average score was 74.86, valued in high category; 2) there was a significant difference of conceptual understanding improvement between the group taught by applying blended learning and those by conventional learning model in learning basic computer network.

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EMI reduction technique for switching converter by spectrum spread using pseudo analog signal

IEEJ Transactions on Electronics, Information and Systems

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IEEJ Transactions on electronics, Information and Systems 2016年第1期136卷 43-49页

作者： Takai, Nobukazu Kaneya, Kotaro Kobori, Yasunori Kobayashi, Haruo Devition of Electronics and Inormation Graduate School of Science and Technology Gunma University 1-5-1 Tenjin-cho Kiryu Gunma376-8515 Japan Education Program of Electronics and Informatics Graduate School of Science and Technology Gunma University 1-5-1 Tenjin-cho Kiryu Gunma376-8515 Japan National Institute of Technology Oyama College Dep. of Innovative Electrical and Electronic Engineering 771 Ohaza-Nakakuki Oyama Tochigi323-0806 Japan

In this paper, EMI reduction method for switching power supply circuit by using PLL circuit as reference signal whose spectrum is spreaded, is proposed. M-sequence pseudo random signal is employed for PLL spectrum spread. Next, we extend this low bit M-sequence pseudo random signal to spectrum spread signal called "pseudo analog signal." The proposed pseudo analog signal can realize that the effect of the spectrum spread is wide even if the number of bit of the pseudo random circuit is small. Simulations and measurement are performed to verify the validity of the proposed method. Simulation and measurement results indicate that the proposed method have a large effect of the spectrum spread. © 2016 The Institute of Electrical Engineers of Japan.

关键词： Phase locked loops

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Frictional characteristics measurement of a ceramic aerostatic linear bearing 5

Frictional characteristics measurement of a ceramic aerostat...

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5th International Conference on Advanced Micro-Device Engineering, AMDE 2013

作者： Kitabata, Kouki Iwashita, Hiroshi Takita, Akihiro Djamal, Mitra Pornsuwancharoen, Nithiroth Fujii, Yusaku Education Program of Electronics and Informatics Mathematics and Physics Graduate School of Science and Technology Gunma University 1-5-1 Tenjin-cho Kiryu Gunma376-8515 Japan Depatment of Electronics Graduate School of Engineering Gunma University 1-5-1 Tenjin-cho Kiryu Gunma376-8515 Japan Division of Mechanical Sience and Technology Graduate School of Tecnology Gunma University 1-5-1 Tenjin-cho Kiryu Gunma376-8515 Japan Theoretical High Energy Physics and Instrumentation Research Group Faculty of Mathematics and Natural Sciences Institut Teknologi Bandung Jl. Ganesa 10 Bandung40132 Indonesia Department of Electrical Engineering Faculty of Industry and Technology Rajamangala University of Technology Isan Sakonnakon47160 Thailand

ISBN: (纸本)9783038354659

The resultant force acting on the moving part of the ceramic aerostatic linear bearing is measured highly accurately as the inertial force of the moving part of the bearing by means of the levitation mass method (LMM). The measurement results of the ceramic aerostatic linear bearing and metal aerostatic linear bearing of different mass are compared. The regression equation of the ceramic aerostatic linear bearing and metal aerostatic linear bearing are calculated. The ceramic linear bearing and metal linear bearing have extremely small frictional force.. © (2015) Trans Tech Publications, Switzerland.

关键词： Aerodynamics

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Evaluating an e-Learning Platform at Graduate School Based on User Experience Evaluation Technique

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Journal of Physics: Conference Series 2021年第1期1737卷

作者： M S Abubakari Nurkhamid G Hungilo Department of Electronics Engineering Education Postgraduate Program Universitas Negeri Yogyakarta Indonesia Department of Informatics Engineering Graduate Program University Atma Jaya Yogyakarta Indonesia

This study was aimed to evaluate the e-learning platform in a graduate school by using User Experience Questionnaire (UEQ). The data were collected from 65 respondents and analyzed using an excel data analysis tool. The results indicate that all six scales of the instrument are consistent except the novelty scale. Also, the calculated means of the scales are slightly positive as all values are greater than 0.8 compared to the UEQ benchmark. Although the respondents show a little positive impression with the platform, all scales means are below average category except efficiency scale which is above average as compared to the benchmark. This indicates that the platform needs more improvement in all aspects of user experience for it to be at least in a good category. The findings discussed in this paper are valuable for all academic stakeholders in various educational institutions which implement interactive e-learning systems as well as practitioners of user experience and developers of e-learning systems.

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Data analysis and data warehouse design based on Pentaho data integration (kettle) to support the determination of student learning achievement

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IOP Conference Series: Materials Science and Engineering 2021年第5期1098卷

作者： A D Barahama R Wardani Electronics and Informatics Engineering Education Post-Graduate Program Yogyakarta State University Jalan Colombo 01 Daerah Istimewa Yogyakarta 55281 Indonesia

Data analysis has become a vital requirement in various fields. The results of data analysis can be used as a data warehouse design that is expected to help in solving problems, evaluating learning outcomes and supporting decision making. In the field of education, student achievement is a reference for achieving quality learning. This success can be seen from the achievement of student learning completeness that is the basis for evaluating and making decisions. The data warehouse design can be used as a basis in knowing student learning progress that can be seen from the value obtained. The diversity of data makes managing values difficult and delayed, data warehouse design using Pentaho can help and simplify data integration. The results of the analysis and design of the data warehouse will be presented in a multidimensional form that can be seen through dimension tables and fact tables.

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Utilization Extract, Transform, Load For Developing Data Warehouse In education Using Pentaho Data Integration

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Journal of Physics: Conference Series 2021年第1期2111卷

作者： A D Barahama R Wardani Department of Electronics and Informatics Engineering Education Post-Graduate Program Universitas Negeri Yogyakarta Jalan Colombo 01 Daerah Istimewa Yogyakarta 55281 Indonesia

The utilization of data warehouses in various fields is an absolute necessity. A data warehouse is a database that contains large amounts of data that aims to help organizations, fields, and institutions specifically for decision making. Data warehouses can produce important information in the future. Loading data from various sources and processed through an ETL (Extract, Transform, Load) process that displays data consistently is the basis for creating a data warehouse architecture. The development of a data warehouse in education will provide significant benefits for the progress of education. Integration of data and processing results stored in the data warehouse can be the basis for evaluating better planning. Development of data warehouse adopt the multidimensional modelling method which consists of four stages: select the business process, declare the grain, select dimensions, and identify facts. This stage produces a data warehouse architecture and influences and contributes to the advanced information technology in education.

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Design of Hexapod Robot Movement Based on Arduino Mega 2560

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Journal of Physics: Conference Series 2019年第1期1165卷

作者： K U Ariawan G S Santyadiputra I W Sutaya Electronics Engineering Study Program Technical and Vocational Faculty Universitas Pendidikan Ganesha Informatics Engineering Education Departement Technical and Vocational Faculty Universitas Pendidikan Ganesha

This study aims to design the movement of the hexapod robot so that it can move straight forward, turn 90 degrees forward, and move forward 180 degrees by applying the tripod gait method to produce a maximum movement pattern. The robot control system uses Arduino Mega 2560 to control the motion of 18 servo motors through the I2C interface servo motor driver - PCA9685. In straight forward motion testing, an average velocity of 6 cm/s was obtained, 90 degree forward motion testing obtained an average speed of 18 degrees/s, while the 180 degree rotational forward motion test also obtained an average speed of 18 degrees/s.

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Comprehensive survey of cloud intrusion detection system

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AIP Conference Proceedings 2023年第1期2654卷

作者： Aditya Nur Cahyo Tri Kuntoro Priyambodo Mardhani Riasetiawan 1Doctoral Program of Computer Science FMIPA UGM Yogyakarta Indonesia 2Informatics Education FKIP UMS Surakarta Indonesia 3Department of Computer Science and Electronics FMIPA UGM Yogyakarta Indonesia

Intrusion Detection System provides services related to surveillance of computer security, as one of the minimum components that must exist in a computer network architecture. Regarding the adoption of cloud technology, many users have switched to using cloud computers to operate servers, applications, or the web in cloud computing. To meet the security needs of users, various open source and commercial tools are being developed. Although many developments have taken place in the IDS area, in cloud-based IDS many challenges such as security, interoperability, resource scheduling, virtualization still need to be improved. This paper reviews the paradigms and surveys about the Intrusion Detection System that runs on cloud computing in terms of concepts, technology, tools, and various challenges. A systematic literature review of selected papers, published from 2016 to 2020, was carried out to properly understand the Intrusion detection System paradigm in cloud computing and the security challenges faced in cloud computing. This review paper helps researchers who want to start their research careers in the cloud computing-based Intrusion Detection System

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Need Analysis of Interactive Multimedia Development for Virtual Learning in Pandemic

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Journal of Physics: Conference Series 2021年第1期2111卷

作者： J F Lempas S Soenarto A D Barahama Instructional Technology Post-Graduate Program Universitas Negeri Yogyakarta Jalan Colombo 01 Daerah Istimewa Yogyakarta 55281 Indonesia Department of Electronics and Informatics Engineering Education Post-Graduate Program Universitas Negeri Yogyakarta Jalan Colombo 01 Daerah Istimewa Yogyakarta 55281 Indonesia

The pandemic that has not ended has an impact on changing the educational paradigm. Existing conditions demand to continue to use virtual learning. During the epidemic, this study will examine students' demand for interactive multimedia in virtual learning. The interviews reveal that the media that teachers provide in virtual learning during this pandemic has limits. Data was gathered through interviews and questionnaires given to teachers and students. The student requirements questionnaire reveals that interactive multimedia is the most effective instructional medium for pupils. This study is part of a larger investigation of the evolution of multimedia learning during a pandemic.

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