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Introduction of the Study Results of the Moon electrical Power systems 22

Introduction of the Study Results of the Moon Electrical Pow...

22nd IAA Symposium on Building Blocks for Future Space Exploration and Development at the 75th International Astronautical Congress, IAC 2024

作者： Oka, Noriaki Yamauchi, Kenji Ijichi, Koichi Yanagawa, Hiroki Kashimura, Osamu Uchida, Atsushi Tanaka, Koji Mitani, Tomohiko Honjo, Kazuhiko Ishikawa, Ryo Ishimura, Kosei Fujino, Yoshiyuki Fujita, Kazuhisa Itoh, Kenji Kawakami, Yoshihiro Ishikawa, Yoji Yamaguchi, Hiroshi Ogawa, Akihiko Japan Space Systems 3-5-8 Shibakoen Minato-ku Tokyo105-0011 Japan Emerging Technologies and Security Division Mitsubishi Research Institute Inc. 10-3 Nagatacho 2-chome Chiyoda-ku Tokyo100-8141 Japan Institute of Space and Astronautical Science Japan Aerospace Exploration Agency 3-1-1 Yoshinodai Chuo-ku Kanagawa Sagamihara252-5210 Japan Kyoto University Gokasho Kyoto Uji611-0011 Japan Department of Computer and Network Engineering The University of Electro-Communications 1-5-1 Chofugaoka Chofu Tokyo182-8585 Japan Dept. of Modern Mechanical Engineering School of Creative Science and Engineering Waseda University 3-4-1 Okubo Shinjuku-ku Tokyo169-8555 Japan Faculty of Science and Engineering Toyo University 2100 Kujirai Saitama-ken Kawagoe350-8585 Japan 1955-1 Kurematsu-cho chuo-ku Shizuoka Hamamatsu431-1202 Japan Department of Electrical and Electronic Engineering College of Engineering Kanazawa Institute of Technology 7-1 Ohgigaoka Ishikawa Nonoichi921-8501 Japan Obayashi Future Lab. Technology Division Obayashi Corporation 2-15-2 Konan Minato-ku Tokyo108-8502 Japan 492 Minosho-machi Nara-ken YamatoKoriyama639-1186 Japan Electronics Technologies Office Technologies Development Department IHI Aerospace Co. Ltd. 900 Fujiki Gunma-ken Tomioka-shi370-2398 Japan

ISBN: (纸本)9798331312251

Since the year of 2021, Ministry of Economy, Trade and Industry (METI) started work on the energy issues on the Moon including the feasibility study of the electrical power system with Mitsubishi Research Institute, Japan Space systems, Institute of Space and Astronautical Science of Japan Aerospace Exploration Agency (JAXA), the universities and the industries. The architecture of the Moon electrical power infrastructure is found to be more like those of the power infrastructure of the earth than current satellite power system, and consisted of the power generation, power distribution grid and the power storage, and supplying electrical power to the consumer. The differences are that the environment of the Moon such as the vacuum and temperature condition, the influence of the regolith, etc. should have to be considered, and also the transportation cost of the construction is the key factor for the necessary technology to be selected. Of course, the technologies already established by the International Space Station (ISS) should be applied where necessary such as in the human habitable area. And more feature of the Moon is that the power generation on the Moon orbit and be sent to the surface or the inside the Permanent Shadow Region (PSR) other than on the surface of the Moon. The main consumer of the power system until the year 2050th is the water extraction and then the electrolysis of the water for, such as, the propellant for the transportation means and the electricity for the human habitant. The results of the system feasibility study of the Moon power architecture and also the electric power system team activities including the discussion with the hydrogen production team are going to be introduced. Copyright © 2024 by the International Astronautical Federation (IAF). All rights reserved.

关键词： Space power generation

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Design, Implementation, and Performance Evaluation of a Fiber Bragg Gratings(FBG) based Smart Insole to Measure Plantar Pressure and Temperature

arXiv

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arXiv 2022年

作者： Mahmud, Sakib Khandakar, Amith Chowdhury, Muhammad E.H. AbdulMoniem, Mohammed Reaz, Mamun Bin Ibne Mahbub, Zaid Bin Sadasivuni, Kishor Kumar Murugappan, M. Alhatou, Mohammed Department of Electrical Engineering Qatar University Doha2713 Qatar Dept. of Electrical Electronics and Systems Engineering Universiti Kebangsaan Malaysia Selangor Bangi43600 Malaysia Department of Physics and Mathematics North South University Dhaka Bangladesh Center for Advanced Materials Qatar University Qatar Research Lab Department of Electronics and Communication Engineering Kuwait College of Science and Technology Block 4 Doha13133 Kuwait Department of Electronics and Communication Engineering School of Engineering Vels Institute of Sciences Technology and Advanced Studies Tamil Nadu Chennai India Neuromuscular Division Hamad General Hospital Department of Neurology Alkhor Hospital Doha3050 Qatar

Various foot complications can be easily avoided by continuous monitoring of foot plantar temperature and pressure. In this work, the design, characterization, and implementation of a Fiber Bragg Gratings (FBG) based smart insole capable of simultaneously measuring plantar pressure and temperature has been reported. The instrumented insole was tested and verified during static and gait exercises. The paper also provides a comparison of the developed optoelectronic-based solution with a commercially available and widely used plantar pressure measurement and analysis system and a lab-made, electronic sensor-based smart insole that can measure both plantar temperature and pressure. It was shown that even though the commercially available expensive system is very robust and highly precise due to many sensing units on the insole, the developed insole with a smaller number of sensors can provide both plantar temperature and pressure with reasonable precision while displaying both foot pressure and temperature maps, and gait cycle plots in real-time. The FBG-based solution is comfortable and safer than the other systems being compared. Thus, confirming the effectiveness of the proposed solution as an addition to the research area for detecting foot complications non-invasively using foot insoles. © 2022, CC BY.

关键词： Fiber Bragg gratings

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Mid-term Scenario Generation for Wind Power Using GAN with Temporal-correlation Enhancement Block 10

Mid-term Scenario Generation for Wind Power Using GAN with T...

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2020 10th International Conference on Power, Energy and electrical engineering, CPEEE 2020

作者： Ma, Yupu Ma, Ming Wang, Ningbo Qiao, Ying State Key Lab of Control and Simulation of Power Systems and Generation Equipment Dept. of Electrical Engineering Tsinghua University Haidian District Beijing100084 China School of Electrical Engineering Northeast Electric Power University Jilin Jilin Province132012 China Wind Power Technology Center of Gansu Electric Power Company Lanzhou Province730070 China

Under the background of increasing renewable energy penetration and rigid demand for midterm generation planning, the accurate expression of wind power uncertainty becomes more and more important. Firstly, this paper analyses the problem of scenario generation models based on traditional Generative Adversarial Networks(GAN), point that the fluctuation of scenarios that it generated usually deviates greatly from the real one. And further proposes a convolutional structure, that called Temporal-correlation Enhancement block (TE block), which can solve the aforementioned problem by enhance the temporal correlation perception ability of convolutional layers. Then, the problems of traditional conditional Wasserstein GAN-Gradient Penalty(WGAN-GP) in mid-scale scenario generation are discussed, and a conditional WGAN-GP scenario generation model that is suitable for mid-term scenario generation is presented. This model-free non-parametric model can generate a large number of realistic wind scenarios efficiently according to the given conditions. In order to validation, we use the data collected in a province in northern China to train the model in the Case Study part, and compare it with the traditional model. Result shows the fluctuation distribution deviation problem is improved obviously on the model with TE block, and in the comparison of auto-correlation coefficient, the proposed model also outperform the traditional model. This verifies the superiority of the proposed model in temporal expression ability compared with the traditional model, as well as the feasibility of the mid-term wind scenario generation. © 2020 The Authors, published by EDP Sciences.

关键词： Generative adversarial networks

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Random multi-channel image synthesis for multiplexed immunofluorescence imaging

arXiv

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arXiv 2021年

作者： Bao, Shunxing Tang, Yucheng Lee, Ho Hin Gao, Riqiang Chiron, Sophie Lyu, Ilwoo Coburn, Lori A. Wilson, Keith T. Roland, Joseph T. Landman, Bennett A. Huo, Yuankai Dept. of Computer Science Vanderbilt University United States Dept. of Electrical and Computer Engineering Vanderbilt University United States Division of Gastroenterology Hepatology and Nutrition Department of Medicine Vanderbilt University Medical Center United States Computer Science & Engineering Ulsan National Institute of Science and Technology Korea Republic of Vanderbilt Center for Mucosal Inflammation and Cancer United States Dept. of Pathology Microbiology and Immunology Vanderbilt University Medical Center United States Veterans Affairs Tennessee Valley Healthcare System United States Epithelial Biology Center Vanderbilt University Medical Center NashvilleTN United States

Multiplex immunofluorescence (MxIF) is an emerging imaging technique that produces the high sensitivity and specificity of single-cell mapping. With a tenet of "seeing is believing", MxIF enables iterative staining and imaging extensive antibodies, which provides comprehensive biomarkers to segment and group different cells on a single tissue section. However, considerable depletion of the scarce tissue is inevitable from extensive rounds of staining and bleaching ("missing tissue"). Moreover, the immunofluorescence (IF) imaging can globally fail for particular rounds ("missing stain"). In this work, we focus on the "missing stain" issue. It would be appealing to develop digital image synthesis approaches to restore missing stain images without losing more tissue physically. Herein, we aim to develop image synthesis approaches for eleven MxIF structural molecular markers (i.e., epithelial and stromal) on real samples. We propose a novel multi-channel high-resolution image synthesis approach, called pixN2N-HD, to tackle possible missing stain scenarios via a high-resolution generative adversarial network (GAN). Our contribution is three-fold: (1) a single deep network framework is proposed to tackle missing stain in MxIF;(2) the proposed "N-to-N" strategy reduces theoretical four years of computational time to 20 hours when covering all possible missing stains scenarios, with up to five missing stains (e.g., "(N-1)-to-1", "(N-2)-to-2");and (3) this work is the first comprehensive experimental study of investigating cross-stain synthesis in MxIF. Our results elucidate a promising direction of advancing MxIF imaging with deep image synthesis. Copyright © 2021, The Authors. All rights reserved.

关键词： Generative adversarial networks

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On the development of a web extension for text authentication on Google Chrome 2

On the development of a web extension for text authenticatio...

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2nd International Conference on electrical, computer and Communication engineering, ECCE 2019

作者： Kabir, Muhammad Nomani Tayan, Omar Alginahi, Yasser Hasan, Md Munirul Rahman, Md Arafatur Faculty of Computer Systems Software Engineering University Malaysia Pahang Kuantan Pahang Malaysia Dept. of Computer Engineering NOOR Research Center College of Computer Science and Engineering Taibah University Madinah Saudi Arabia Dept. of Electrical and Computer Engineering University of Windsor Windsor Canada

ISBN: (纸本)9781538691113

Web extension is a software that can be installed on a web browser. A web-extension link is displayed as an icon on the toolbar of the browser. Based on browsing activity, the extension works automatically or by clicking the extension icon depending on the functionalities made in the extension software. In this work, we developed a web extension on Google Chrome browser to verify online texts by simply clicking on an extension button. Upon clicking the button, the underlying algorithm in the extension software retrieves the texts from the current web-page being displayed. Verification and authentication of texts are performed by comparing the retrieved texts with text database. According to the comparison, texts are highlighted in colors. We consider authentication of Arabic Hadith texts for a case study. The authentic Hadith texts are highlighted by green color;authentic texts with partial diacritics, by yellow;and unauthentic texts, by red. This technique can also be used to authenticate laws, constitutions and Government documents in any language. © 2019 IEEE.

关键词： Authentication

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DP-Net: Dynamic programming guided deep neural network compression

arXiv

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arXiv 2020年

作者： Yang, Dingcheng Yu, Wenjian Zhou, Ao Mu, Haoyuan Yao, Gary Wang, Xiaoyi BNRist Dept. Computer Science & Tech. Tsinghua University Beijing Engineering Research Center for IoT Software and Systems Beijing University of Technology Department of Electrical Engineering and Computer Science Case Western Reserve University

—In this work, we propose an effective scheme (called DP-Net) for compressing the deep neural networks (DNNs). It includes a novel dynamic programming (DP) based algorithm to obtain the optimal solution of weight quantization and an optimization process to train a clustering-friendly DNN. Experiments showed that the DP-Net allows larger compression than the state-of-the-art counterparts while preserving accuracy. The largest 77X compression ratio on Wide ResNet is achieved by combining DP-Net with other compression techniques. Furthermore, the DP-Net is extended for compressing a robust DNN model with negligible accuracy loss. At last, a custom accelerator is designed on FPGA to speed up the inference computation with DP-Net. Copyright © 2020, The Authors. All rights reserved.

关键词： Dynamic programming

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ZAC: A zone path construction approach for effective real-time ridesharing 29

ZAC: A zone path construction approach for effective real-ti...

引用

29th International Conference on Automated Planning and Scheduling, ICAPS 2019

作者： Lowalekar, Meghna Varakantham, Pradeep Jaillet, Patrick School of Information Systems Singapore Management University Singapore Dept. of Electrical Engineering and Computer Science Massachusetts Institute of Technology United States

ISBN: (纸本)9781577358077

Real-time ridesharing systems such as UberPool, Lyft Line, GrabShare have become hugely popular as they reduce the costs for customers, improve per trip revenue for drivers and reduce traffic on the roads by grouping customers with similar itineraries. The key challenge in these systems is to group the right requests to travel in available vehicles in real-time, so that the objective (e.g., requests served, revenue or delay) is optimized. The most relevant existing work has focussed on generating as many relevant feasible (with respect to available delay for customers) combinations of requests (referred to as trips) as possible in real-time. Since the number of trips increases exponentially with the increase in vehicle capacity and number of requests, unfortunately, such an approach has to employ ad hoc heuristics to identify relevant trips. To that end, we propose an approach that generates many zone (abstraction of individual locations) paths - where each zone path can represent multiple trips (combinations of requests) - and assigns available vehicles to these zone paths to optimize the objective. The key advantage of our approach is that these zone paths are generated using a combination of offline and online methods, consequently allowing for the generation of many more relevant combinations in real-time than competing approaches. We demonstrate that our approach outperforms (with respect to both objective and runtime) the current best approach for ridesharing on both real world and synthetic datasets. © 2019 Association for the Advancement of Artificial Intelligence. All rights reserved.

关键词： Vehicles

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Breakup of small aggregates in bounded and unbounded turbulent flows 14

Breakup of small aggregates in bounded and unbounded turbule...

引用

14th European Turbulence Conference, ETC 2013

作者： Babler, Matthaus U. Biferale, Luca Brandt, Luca Feudel, Ulrike Guseva, Ksenia Lanotte, Alessandra S. Marchioli, Cristian Pecile, Eros Picano, Francesco Sardina, Gaetano Soldati, Alfredo Toschi, Federico Dept. Chemical Engineering and Technology KTH Royal Institute of Technology Stockholm Sweden Dept. Physics INFN University of Rome Tor Vergata Rome Italy Linné FLOW Center KTH Mechanics Stockholm Sweden Theoretical Physics Complex Systems ICBM University of Oldenburg Oldenburg Germany ISAC-CNR INFN Sez. Lecce Lecce Italy Dept. Mathematics and Computer Science University of Udine Udine Italy Dept. of Fluid Mechanics CISM Udine University of Udine Udine Italy Dept. Applied Physics Eindhoven University of Technology Eindhoven Netherlands

Breakup of small tracer-like aggregates is studied by means of numerical simulations in four different flows, namely homogeneous isotropic turbulence, smooth stochastic flow, turbulent channel flow, and developing boundary layer flow. Aggregate breakup occurs when the local hydrodynamic stress σ ∼ Ε1/2, where Ε is the local energy dissipation, overcomes a given threshold value σcr [or equivalently Εcr ∼ σcr2 ] characteristic for a given type of aggregates. Following the aggregate trajectory upon release and detecting the first occurrence of local energy dissipation exceeding the predefined threshold allows for estimating the breakup rate as a function of Εcr. Results show that the breakup rate decreases with increasing threshold. For small values of the threshold, this decrease assumes consistent scaling among the different flows which is explained by universal small scale flow properties. Copyright © ETC 2013 - 14th European Turbulence *** rights reserved.

关键词： Aggregates

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Ion beam enhanced low-temperature growth of tantalum-doped tin oxide thin films

引用

Surface and Coatings technology 2025年

作者： Tabitha A. Amollo Keliang Wang Bocong Zhen Tyler Johnson Qi Hua Fan Dept. Electrical and Computer Engineering Michigan State University East Lansing MI 48824 USA Dept. Chemical Engineering and Materials Science Michigan State University East Lansing MI 48824 USA Fraunhofer USA Center Midwest East Lansing MI 48824 USA School of Physics Beijing Institute of Technology Beijing 100081 China

Currently, indium tin oxide (ITO) is the commonly used transparent electrode material in optoelectronic devices. Because of the cost and scarcity of indium, the main component of ITO, alternative transparent conductive oxides (TCOs) are needed. Besides, given the expanding market of transparent conductive electrode applications, alternative TCOs are inevitable for sustainability. In this study, tantalum doped tin oxide (TTO) is studied, showing promising electric and optical properties as an alternative to ITO. Two critical factors contribute to the attractive properties of TTO thin films. 1) Tantalum has an ionic radius nearly matching that of tin and thus is easily incorporated in tin oxide lattice at low formation energy, and without production of secondary phase or strains. 2) TTO thin films are deposited using a unique single beam ion source enhanced magnetron sputtering, which enables effective modulation of the film structures at room temperature. The TTO films exhibited a polycrystalline structure, resulting in an increased conductivity. The optical transmittance increased with an increase in the ion source voltage. At 439 nm wavelength, 91.7 and 84.9 % of transmittance was achieved at 120 and 50 V of ion source DC voltage, respectively. Hence, the ion beam source enables room temperature growth of quality TCOs. Development of alternative TCOs will ensure sustainability in the production of transparent electrode devices.

关键词： Tantalum doped tin oxide Thin film Ion beam Magnetron sputtering

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Deep Reinforcement Learning for Cybersecurity Assessment of Wind Integrated Power systems

arXiv

引用

arXiv 2020年

作者： Liu, XiaoRui Ospina, Juan Konstantinou, Charalambos Dept. of Electrical and Computer Engineering FAMU-FSU College of Engineering and the Center for Advanced Power Systems Florida State University TallahasseeFL32310 United States

The integration of renewable energy sources (RES), and specifically wind and solar PV systems, is rapidly increasing in electric power systems (EPS). While the inclusion of these intermittent RES coupled with the wide-scale deployment of communication and sensing devices is important towards a fully smart and modern grid, it has also expanded the cyber-threat landscape, effectively making power systems vulnerable to cyberattacks. This paper proposes a cybersecurity assessment approach designed to assess the cyberphysical security of EPS. The work takes into consideration the intermittent generation of RES, vulnerabilities introduced by microprocessor-based electronic information and operational technology (IT/OT) devices, and contingency analysis results. The proposed approach utilizes deep reinforcement learning (DRL) and an adapted Common Vulnerability Scoring System (CVSS) score tailored to assess vulnerabilities in EPS, in order to identify the optimal attack transition policy based on N − 2 contingency results, i.e., the simultaneous failure of two system elements. The effectiveness of the approach is validated via numerical and real-time simulation experiments, which in turn, demonstrate how the proposed process successfully identifies potential threats that can be utilized by attackers to cause critical EPS disruptions. Copyright © 2020, The Authors. All rights reserved.

关键词： Deep learning

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