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A survey on state estimation techniques and challenges in smart distribution systems

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arXiv 2018年

作者： Dehghanpour, Kaveh Wang, Zhaoyu Wang, Jianhui Yuan, Yuxuan Bu, Fankun Department of Electrical and Computer Engineering Iowa State University AmesIA50011 United States Department of Electrical Engineering Southern Methodist University DallasTX75275 United States Energy Systems Division Argonne National Laboratory ArgonneIL United States

This paper presents a review of the literature on State Estimation (SE) in power systems. While covering some works related to SE in transmission systems, the main focus of this paper is Distribution System State Estimation (DSSE). The paper discusses a few critical topics of DSSE, including mathematical problem formulation, application of pseudomeasurements, metering instrument placement, network topology issues, impacts of renewable penetration, and cyber-security. Both conventional and modern data-driven and probabilistic techniques have been reviewed. This paper can provide researchers and utility engineers with insights into the technical achievements, barriers, and future research directions of DSSE. Copyright © 2018, The Authors. All rights reserved.

关键词： Topology

Robust medical instrument segmentation challenge 2019

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arXiv 2020年

作者： Roβ, Tobias Reinke, Annika Full, Peter M. Wagner, Martin Kenngott, Hannes Apitz, Martin Hempe, Hellena Filimon, Diana Mindroc Scholz, Patrick Tran, Thuy Nuong Bruno, Pierangela Arbelaéz, Pablo Bian, Gui-Bin Bodenstedt, Sebastian Bolmgren, Jon Lindström Bravo-Sánchez, Laura Chen, Hua-Bin González, Cristina Guo, Dong Halvorsen, Pål Heng, Pheng-Ann Hosgor, Enes Hou, Zeng-Guang Isensee, Fabian Jha, Debesh Jiang, Tingting Kirtac, Kadir Jin, Yueming Kletz, Sabrina Leger, Stefan Li, Zhixuan Maier-Hein, Klaus H. Ni, Zhen-Liang Riegler, Michael A. Schoeffmann, Klaus Shi, Ruohua Speidel, Stefanie Stenze, Michael Twick, Isabell Wang, Gutai Wang, Jiacheng Wang, Liansheng Wang, Lu Zhang, Yujie Zhou, Yan-Jie Zhu, Lei Wiesenfarth, Manuel Kopp-Schneider, Annette Müller-Stich, Beat P. Maier-Hein, Lena Heidelberg Germany University of Heidelberg Germany Heidelberg Germany Department of General Heidelberg University Hospital Visceral and Transplant Surgery Heidelberg Germany caresyntax Berlin Germany University of Chinese Academy Sciences Beijing China State Key Laboratory of Management and Control for Complex Systems Institute of Automation Chinese Academy of Sciences Beijing China SimulaMet Oslo Norway Tromsø Norway Oslo Norway School of Mechanical and Electrical Engineering University of Electronic Science and Technology of China Chengdu China Partner Site Dresden Heidelberg Germany Faculty of Medicine and University Hospital Carl Gustav Carus Technische Universität Dresden Dresden Germany Dresden Germany Universidad de Los Andes Bogotá Colombia Peking University Peking China Department of Computer Science School of Informatics Xiamen University Xiamen China Department of Computer Science and Engineering Chinese University of Hong Kong Hong Kong German Cancer Research Center Division of Biostatistics Heidelberg Germany Institute of Information Technology Klagenfurt University Austria

Intraoperative tracking of laparoscopic instruments is often a prerequisite for computer and roboticassisted interventions. While numerous methods for detecting, segmenting and tracking of medical instruments based on endoscopic video images have been proposed in the literature, key limitations remain to be addressed: Firstly, robustness, that is, the reliable performance of state-of-the-art methods when run on challenging images (e.g. in the presence of blood, smoke or motion artifacts). Secondly, generalization;algorithms trained for a specific intervention in a specific hospital should generalize to other interventions or institutions. In an effort to promote solutions for these limitations, we organized the Robust Medical Instrument Segmentation (ROBUST-MIS) challenge as an international benchmarking competition with a specific focus on the robustness and generalization capabilities of algorithms. For the first time in the field of endoscopic image processing, our challenge included a task on binary segmentation and also addressed multi-instance detection and segmentation. The challenge was based on a surgical data set comprising 10,040 annotated images acquired from a total of 30 surgical procedures from three different types of surgery. The validation of the competing methods for the three tasks (binary segmentation, multi-instance detection and multi-instance segmentation) was performed in three different stages with an increasing domain gap between the training and the test data. The results confirm the initial hypothesis, namely that algorithm performance degrades with an increasing domain gap. While the average detection and segmentation quality of the best-performing algorithms is high, future research should concentrate on detection and segmentation of small, crossing, moving and transparent instrument(s) (parts). Copyright © 2020, The Authors. All rights reserved.

关键词： Endoscopy

Effective capacity for renewal service processes with applications to HARQ systems

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arXiv 2018年

作者： Shi, Zheng Tsiftsis, Theodoros Tan, Weiqiang Yang, Guanghua Ma, Shaodan Alouini, Mohamed-Slim School of Electrical and Information Engineering Jinan University Zhuhai519070 China School of Computer Science and Educational Software Guangzhou University Guangzhou510006 China Department of Electrical and Computer Engineering University of Macau Macao China CEMSE Division King Abdullah University of Science and Technology Thuwal23955-6900 Saudi Arabia

Considering the widespread use of effective capacity in cross-layer design and the extensive existence of renewal service processes in communication networks, this paper thoroughly investigates the effective capacity for renewal processes. Based on Z-transform, we derive exact analytical expressions for the effective capacity at a given quality of service (QoS) exponent for both the renewal processes with constant reward and with variable rewards. Unlike prior literature that the effective capacity is approximated with no many insightful discussions, our expression is simple and reveals further meaningful results, such as the monotonicity and bounds of effective capacity. The analytical results are then applied to evaluate the cross-layer throughput for diverse hybrid automatic repeat request (HARQ) systems, including fixed-rate HARQ (FR-HARQ, e.g., Type I HARQ, HARQ with chase combining (HARQ-CC) and HARQ with incremental redundancy (HARQ-IR)), variable-rate HARQ (VR-HARQ) and cross-packet HARQ (XP-HARQ). Numerical results corroborate the analytical ones and prove the superiority of our proposed approach. Furthermore, targeting at maximizing the effective capacity via the optimal rate selection, it is revealed that VR-HARQ and XP-HARQ attain almost the same performance, and both of them perform better than FR-HARQ. Copyright © 2018, The Authors. All rights reserved.

关键词： Quality of service

Photon Sieving: Selective and Sensitive Photon Sieve Based on III–V Semiconductor Nanowire Forest Fabricated by Lithography-Free Process (Advanced Optical Materials 17/2020)

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Advanced Optical Materials 2020年第17期8卷

作者： Gil Ju Lee Kwangwook Park Min Seok Kim Sehui Chang Tae Joon Seok Hong-Gyu Park Gunwu Ju Kyujung Kim Young Min Song School of Electrical Engineering and Computer Science (EECS) Gwangju Institute of Science and Technology (GIST) Gwangju 61005 Republic of Korea Division of Advanced Materials Engineering Jeonbuk National University Jeonju 54896 Republic of Korea Department of Physics Korea University Seoul 02841 Republic of Korea Technology Support Center Korea Institute of Science and Technology Seoul 02792 Republic of Korea Department of Cogno-Mechatronics Engineering Pusan National University (PNU) Busan 46241 Republic of Korea

Source Estimation for the Damped Wave Equation Using Modulating Functions Method: Application to the Estimation of the Cerebral Blood Flow

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IFAC-PapersOnLine 2017年第1期50卷 7082-7088页

作者： Asiri S. Laleg-Kirati T.-M. Computer Electrical and Mathematical Science and Engineering Division (CEMSE) King Abdullah University of Science and Technology (KAUST) Thuwal 23955-6900 Saudi Arabia

In this paper, a method based on modulating functions is proposed to estimate the Cerebral Blood Flow (CBF). The problem is written in an input estimation problem for a damped wave equation which is used to model the spatiotemporal variations of blood mass density. The method is described and its performance is assessed through some numerical simulations. The robustness of the method in presence of noise is also studied. © 2017

关键词： Biomedical System Damped Wave Equation Distributed Parameter System Modulating Functions Method Robust Estimation Source Estimation

Four-phonon scattering diminishes the optical phonon contribution and isotope effect to thermal conductivity of III-V semiconductors

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arXiv 2019年

作者： Yang, Xiaolong Feng, Tianli Li, Ju Ruan, Xiulin School of Mechanical Engineering Birck Nanotechnology Center Purdue University West LafayetteIN47907-2088 United States Institute for Advanced Study Shenzhen University Nanhai Avenue 3688 Shenzhen518060 China Frontier Institute of Science and Technology State Key Laboratory for Mechanical Behavior of Materials Xi’an Jiaotong University Xi’an710049 China Department of Physics and Astronomy Department of Electrical Engineering and Computer Science Vanderbilt University NashvilleTN37235 United States Materials Science and Technology Division Oak Ridge National Laboratory Oak RidgeTN37831 United States Department of Nuclear Science and Engineering Department of Materials Science and Engineering Massachusetts Institute of Technology CambridgeMA02139 United States

Recent studies reveal that four-phonon scattering is generally important in determining thermal conductivities of solids. However, these studies have been focused on materials where thermal conductivity κ is dominated by acoustic phonons, and the impact of four phonon scattering, although significant, is still generally smaller than three-phonon scattering. In this work, taking AlSb as example, we demonstrated that four-phonon scattering is even more critical to three-phonon scattering as it diminishes optical phonon thermal transport, and therefore significantly reduces the thermal conductivities of materials in which optical branches have long three-phonon lifetimes. Also, our calculations show that four-phonon scattering can play an extremely important role in weakening the isotope effect on κ. Specifically, four-phonon scattering reduces the room-temperature κ of the isotopically pure and natural-occurring AlSb by 70% and 50%, respectively. The reduction for isotopically pure and natural-occurring c-GaN is about 34% and 27%, respectively. For isotopically-pure w-GaN, the reduction is about 13% at room temperature and 25% at 400 K. These results provided important guidance for experimentalists for achieving high thermal conductivities in III-V compounds for applications in semiconductor industry. Copyright © 2019, The Authors. All rights reserved.

关键词： III-V semiconductors

Flexible Electronics: Flexible and Stretchable Electronics for Harsh-Environmental Applications (Adv. Mater. Technol. 9/2019)

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Advanced Materials Technologies 2019年第9期4卷

作者： Amani S. Almuslem Sohail Faizan Shaikh Muhammad M. Hussain mmh Labs Electrical Engineering Computer Electrical Mathematical Science and Engineering Division King Abdullah University of Science and Technology (KAUST) Thuwal 23955–6900 Saudi Arabia EECS University of California Berkeley CA 94720 USA

The joint automated repository for various integrated simulations (JARVIS) for data-driven materials design

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arXiv 2020年

作者： Choudhary, Kamal Garrity, Kevin F. Reid, Andrew C.E. DeCost, Brian Biacchi, Adam J. Hight Walker, Angela R. Trautt, Zachary Hattrick-Simpers, Jason Kusne, A. Gilad Centrone, Andrea Davydov, Albert Jiang, Jie Pachter, Ruth Cheon, Gowoon Reed, Evan Agrawal, Ankit Qian, Xiaofeng Sharma, Vinit Zhuang, Houlong Kalinin, Sergei V. Sumpter, Bobby G. Pilania, Ghanshyam Acar, Pinar Mandal, Subhasish Haule, Kristjan Vanderbilt, David Rabe, Karin Tavazza, Francesca Materials Measurement Laboratory National Institute of Standards and Technology GaithersburgMD20899 United States Theiss Research San diegoCA92037 United States Department of Chemistry and Biochemistry University of Maryland College ParkMD20742 United States Physical Measurement Laboratory National Institute of Standards and Technology GaithersburgMD20899 United States Materials and Manufacturing Directorate Air Force Research Laboratory Wright–Patterson Air Force Base OH45433 United States Department of Materials Science and Engineering Stanford University StanfordCA94305 United States Department of Electrical and Computer Engineering Northwestern University EvanstonIL60208 United States Department of Materials Science and Engineering Texas A&M University TX77843 United States Joint Institute for Computational Sciences University of Tennessee KnoxvilleTN37996 United States National Institute for Computational Sciences Oak Ridge National Laboratory TN37831 United States School for Engineering of Matter Transport & Energy Arizona state university AZ85287 United States Center for Nanophase Materials Sciences Oak Ridge National Laboratory TN37831 United States Materials Science and Technology Division Los Alamos National Lab Los AlamosNM87545 United States Department of Mechanical Engineering Virginia Tech BlacksburgVA24061 United States Department of Physics and Astronomy Rutgers University PiscatawayNJ08901 United States

The Joint Automated Repository for Various Integrated Simulations (JARVIS) is an integrated infrastructure to accelerate materials discovery and design using density functional theory (DFT), classical force-fields (FF), and machine learning (ML) techniques. JARVIS is motivated by the Materials Genome Initiative (MGI) principles of developing open-access databases and tools to reduce the cost and development time of materials discovery, optimization, and deployment. The major features of JARVIS are: JARVIS-DFT, JARVIS-FF, JARVIS-ML, and JARVIS-Tools. To date, JARVIS consists of ≈ 40,000 materials and ≈ 1 million calculated properties in JARVIS-DFT, ≈ 1,500 materials and ≈ 110 force-fields in JARVIS-FF, and ≈ 25 ML models for material-property predictions in JARVIS-ML, all of which are continuously expanding. JARVIS-Tools provides scripts and workflows for running and analyzing various simulations. We compare our computational data to experiments or high-fidelity computational methods wherever applicable to evaluate error/uncertainty in predictions. In addition to the existing workflows, the infrastructure can support a wide variety of other technologically important applications as part of the data-driven materials design paradigm. The JARVIS datasets and tools are publicly available at the website: https://*** . © 2020, CC BY.

关键词： Density functional theory

Publisher Correction to:Highly Elastic,Bioresorbable Polymeric Materials for Stretchable,Transient Electronic Systems

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Nano-Micro Letters 2024年第8期16卷 417-417页

作者： Jeong‑Woong Shin Dong‑Je Kim Tae‑Min Jang Won Bae Han Joong Hoon Lee Gwan‑Jin Ko Seung Min Yang Kaveti Rajaram Sungkeun Han Heeseok Kang Jun Hyeon Lim Chan‑Hwi Eom Amay JBandodkar Hanul Min Suk‑Won Hwang KU‑KIST Graduate School of Converging Science and Technology Korea University145 Anam‑roSeongbuk‑guSeoul 02841Republic of Korea SK Hynix 2091Gyeongchung‑daeroBubal‑eupIcheon‑siGyeonggi‑do 17336Republic of Korea Hanwha Systems Co. Ltd.188Pangyoyeok‑roBundang‑guSeongnam‑siGyeonggi‑do 13524Republic of Korea Department of Electrical and Computer Engineering North Carolina State UniversityRaleighNC 27606USA Center for Advanced Self‑Powered Systems of Integrated Sensors and Technologies(ASSIST) North Carolina State UniversityRaleighNC 27606USA Department of Integrative Energy Engineering Korea University145 Anam‑roSeongbuk‑guSeoul 02841Republic of Korea Biomaterials Research Center Korea Institute of Science and Technology(KIST)5 Hwarang‑ro 14‑gilSeongbuk‑guSeoul 02792Republic of Korea Semiconductor R&D Center Samsung Electronics Co.Ltd.Hwaseong‑siGyeonggi‑do 18448Republic of Korea Center for Advanced Biomolecular Recognition Biomedical Research DivisionKorea Institute of Science and Technology(KIST)Seoul 02792Republic of Korea

Due to typesetting mistake,Hanul Min was missed to be denoted as a corresponding author in the *** type-setter apologizes for *** original article has been *** Access This article is licensed under a Creative Commons Attribution 4.0 International License,which permits use,sharing,adaptation,distribution and reproduction in any medium or format,as long as you give appropriate credit to the original author(s)and the source,provide a link to the Creative Commons licence,and indicate if changes were *** images or other third party material in this article are included in the article’s Creative Commons licence,unless indicated otherwise in a credit line to the *** material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use,you will need to obtain permission directly from the copyright holder.

关键词： Creative Elastic Highly