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Study of steady-state feature extraction algorithm based on EMd

IOP conference Series: Materials Science and engineering 2019年第6期490卷

作者： Xianqing Huang Bo Yin rui Zhang Zhiqiang Wei College of information science and engineering Ocean University of China Qingdao China Qingdao Haier Smart Technology R&D Co. Ltd. Qingdao China

The accuracy of appliance identification is mainly determined by the selection of features in Non-Intrusive Load Monitoring (NILM). The time domain features extracted based on the appliance steady-state depends highly on the stable voltage. This paper proposes a frequency domain features extraction method, which applies the empirical mode decomposition (EMd) principle. The combination of frequency domain features and time domain features can effectively reduce the impact of voltage fluctuations on the accuracy of electrical identification. Through experimental comparison, it is proved that this method can solve time domain features overlapping, with higher anti-interference ability and robustness, especially for the non-resistive electronic loads.

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Notice of removal: research on Prediction and control of Heavy commercial Vehicle Interior High Frequency Noise Based on SEA

Notice of Removal: Research on Prediction and Control of Hea...

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International computers, Signals and Systems conference (IcoMSSC)

作者： rongjiang Tang Li Huang Zhe Tong Shenfang Li School of Mechanical & Electrical Engineering Guilin University of Electronic Technology Guilin China R&D Center of Commercial Vehicle Dong Feng Liuzhou Automobile Co. Ltd. Liuzhou China

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An online non-intrusive load monitoring method based on Hidden Markov model

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Journal of Physics: conference Series 2019年第4期1176卷

作者： Xianqing Huang Bo Yin Zhiqiang Wei Xinghao Wei rui Zhang College of information science and engineering Ocean University of China Qingdao China Qingdao Haier Smart Technology R&D Co. Ltd. Qingdao China

Non-intrusive load monitoring (NILM) can decompose the total power consumption measured by the smart meter into the power consumed by the individual appliances, so as to achieve the purpose of saving energy. In this paper, an improved method of daubechies9 (dB9) which is a discrete wavelet is proposed, which can effectively remove the noise of the low-frequency components. On this basis, an online NILM method based on Hidden Markov model (HMM) is proposed. The model of load switching can be built using apparent power of transient-state with this method. Besides, the improved forward algorithm which effectively suppressing the data underflow in load classification is proposed. The proposed methods are embedded in the smart meter and can increase the overall recognition rate of the load over 90% in the experiments which prove that they have good applicability.

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High-damping and conducting epoxy nanocomposite using both zinc oxide particles and carbon nanofibers

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Journal of Materiomics 2018年第3期4卷 187-193页

作者： Jae-Soon Jang Gyo Woo Lee Hyung-ick Kim Sung Yong Hong Lijie Ci Jae-do Nam Jonghwan Suhr Simulation Group Battery R&D CenterSAMSUNG SDI CO.LTDSamsung-RoYeongtong-GuSuwon-SiGyeonggi-DoSouth Korea Division of Mechanical Design Engineering Chonbuk National UniversityJeonju561-756South Korea Dongnam Regional Division Korea Institute of Industrial TechnologyJinju 52845South Korea Department of Polymer Science and Engineering Sungkyunkwan University2066SeoburoJangan-guGyeonggi-doSouth Korea School of Materials Science&Engineering Shandong UniversityChina School of Mechanical Engineering Sungkyunkwan University2066SeoburoJangan-guGyeonggi-doSouth Korea Department of Energy Science Sungkyunkwan University2066SeoburoJangan-guGyeonggi-doSouth Korea

In this study,high-damping and conducting epoxy nanocomposites were developed with carbon nanofibers as conducting materials,and zinc oxide particles as piezoelectric *** mechanical and electrical properties,electrical impedance,and loss factors were investigated by uniaxial tensile tests,voltage measurement,impedance measurement,and 3-point bending *** percolation thresholds were found:the percolation threshold of resistivity due to the carbon nanofibers forming conductive networks in the matrix;and the impedance threshold due to the zinc oxide particles acting like electric barriers.A poling treatment of the high-damping and conducting epoxy nanocomposite was considered,and we found that poling treatment helped to make the networks more conductive and to generate voltage from ZnO particles.A high-damping and conducting epoxy nanocomposite with 3 wt%CNF and 10 wt%ZnO exhibited higher loss factor than those of others tested.

关键词： damping Piezoelectric materials Impedance Poling treatment Loss factor

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Modulation-Based detect-and-Forward relaying in Noncoherent UWB Systems

Modulation-Based Detect-and-Forward Relaying in Noncoherent ...

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IEEE Vehicular technology conference

作者： Yi-Fang Hou Tsan-Ming Wu System Integration R&D Division Gemtek Technology Co. Ltd. Hukou Hsinchu 30352 Taiwan Department of Electrical Engineering Chung Yuan Christian University Chung-Li Taoyuan 32023 Taiwan

ISBN: (纸本)9781538663592;9781538663585

In this paper, we investigate and analyze modulation-based detect-and-forward (MdeF) relaying for the noncoherent ultra-wideband cooperative system under Nakagami-m fading environments, which can cover a wide range of fading conditions. The MdeF relaying is performed based on the codeword modulation and detects symbols through the codeword mapping process and signal waveform aggregation scheme with good noise/interference mitigation. The proposed MdeF relaying is shown that the upper bound of the average bit error probability matches well to numerical counterpart as signal-to-noise ratio becomes larger and outperforms the conventional deF relaying.

关键词： cooperative communication error statistics modulation coding Nakagami channels relay networks (telecommunication) ultra wideband technology Nakagami channels modulation coding cooperative communication relaying Ultra wideband technologies noncoherent Error analysis fading color signal to noise ratios ABEr

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Effect of grain boundary structures on the behavior of He defects in Ni:An atomistic study

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Chinese Physics B 2017年第9期26卷 137-143页

作者：龚恒风严岩张显生吕伟刘彤任啟森 ATF R&D China Nuclear Power Technology Research Institute Co.LtdShenzhen 518000China Shanghai Institute of Applied Physics Division of Nuclear Materials and EngineeringChinese Academy of SciencesShanghai 201800China Key Laboratory of Interracial Physics and Technology Chinese Academy of SciencesShanghai 201800China Department of Mechanical Engineering University of MichiganAnn ArborMichigan 48109USA

We investigated the effect of grain boundary structures on the trapping strength of HeN（N is the number of helium atoms） defects in the grain boundaries of nickel. The results suggest that the binding energy of an interstitial helium atom to the grain boundary plane is the strongest among all sites around the plane. The He_N defect is much more stable in nickel bulk than in the grain boundary plane. Besides, the binding energy of an interstitial helium atom to a vacancy is stronger than that to a grain boundary plane. The binding strength between the grain boundary and the HeN defect increases with the defect size. Moreover, the binding strength of the HeN defect to the Σ3（112）[110] grain boundary becomes much weaker than that to other grain boundaries as the defect size increases.

关键词： molecular dynamics trapping strength helium defect grain boundary

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development and case study of a new-generation model-VAT for analyzing the boundary conditions influence on atmospheric mercury simulation

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Frontiers of Environmental Science & engineering 2018年第1期12卷 149-158页

作者： Wenwei Yang Yun Zhu Carey Jang Shicheng Long Che-Jen Lin Bin Yu Zachariah Adelman Shuxiao Wang Jia Xing Long Wang Jiabin Li Guangdong Provincial Key Laboratory of Atmospheric Environment and Pollution Control College of Environment and Energy South China University of Technology Guangzhou Higher Education Mega Center Guangzhou 510006 China State Key Joint Laboratory of Environment Simulation and Pollution Control School of Environment Tsinghua University Beijing 100084 China USEPA/Office of Air Quality Planning ＆ Standards RTP NC 27711 USA Guangzhou Urban Environmental Cloud Information Technology R＆D Co. Ltd Guangzhou 510006 China 5 Department of Civil Engineering Lamar University Beaumont TX 77710-0024 USA 6 Guangzhou Environmental Monitoring Center Station Guangzhou 510030 China 7 Institute for the Environment The University of North Carolina at Chapel Hill Chapel Hill NC 27517 USA

Atmospheric models are essential tools to study the behavior of air pollutants. To interpret the complicated atmospheric model simulations, a new-generation Model Visualization and Analysis Tool （Model-VAT） has been developed for scientists to analyze the model data and visualize the simulation results. The Model-VAT incorporates analytic functions of conventional tools and enhanced capabilities in flexibly accessing, analyzing, and comparing simulated results from multi-scale models with diflbrent map projections and grid resolutions. The performance of the Model-VAT is demonstrated by a case study of investigating the influence of boundary conditions （BCs） on the ambient Hg formation and transport simulated by the CMAQ model over the Pearl river delta （Prd） region. The alternative BC options are taken from （1） default time-independent profiles, （2） outputs from a CMAQ simulation of a larger nesting domain, and （3） concentration files from GEOS-Chem （re-gridded and re-projected using the Model-VAT）. The three BC inputs and simulated ambient concentrations and deposition were compared using the Model-VAT. The results show that the model simulations based on the static BCs （default profile） underestimates the Hg concentrations by --6.5%, dry depositions by -9.4%, and wet depositions by --43.2% compared to those of the model-derived （e. g. GEOS-Chem or nesting CMAQ） BCs. This study highlights the importance of model nesting approach and demonstrates that the innovative functions of Model-VAT enhances the efficiency of analyzing and comparing the model results from various atmospheric model simulations.

关键词： Model and data wsuahzatlonModel and data analysisCMAQBoundary conditionsMercury

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Non-Invasive Intracellular Observation of Cancer Cells Associated with Proliferation

Non-Invasive Intracellular Observation of Cancer Cells Assoc...

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IEEE International Ultrasonics Symposium

作者： Thomas Tiong Kwong Soon Naohiro Hozumi rahma rahavu Hutami Sachiko Yoshida Kyouichi Takanashi Kazuto Kobayashi Dept. of Environmental and Life Sicences Toyohashi University of Technology Toyohashi Japan Dept. of Electrical and Electronic Information Engineering Toyohashi University of Technology Toyohashi Japan R&D division Honda Electronics Co. Ltd. Toyohashi Japan

Ultrasound microscope is a useful tool for living organ and tissues observation as it works quickly and nondestructively without chemical staining. Previously, the cytoskeleton was successfully mapped by utilizing the cell elasticity, which corresponds to changes in acoustic impedance. In this research, we switched the focus to the intracellular dynamics to illustrate the biological phenomenon under cellular level. 0.05 μg/ml of demecolcine were applied to C1271 breast cancer cells to synchronize the cell cycle in mitotic phase. The result revealed that phenomena in the mitosis which until now is only observable through optical microscopy is achievable in ultrasound microscope. This implies that non-invasive intracellular observation of cancer cells is feasible, and this technique can improve the current anticancer drug development.

关键词： Acoustics Impedance Microscopy Breast cancer Cells (biology) Ultrasonic imaging

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correction: engineering extracellular vesicles for rOS scavenging and tissue regeneration

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Nano convergence 2025年第1期12卷 5页

作者： Ahmed Abdal dayem Ellie Yan Minjae do Yoojung Kim Yeongseo Lee Ssang-Goo Cho deok-Ho Kim Department of Stem Cell and Regenerative Biotechnology Molecular & Cellular Reprogramming Center Institute of Advanced Regenerative Science Konkuk University 120 Neungdong-ro Gwangjin-gu Seoul 05029 Republic of Korea. Department of Biomedical Engineering Johns Hopkins University Baltimore MD 21205 USA. Department of Stem Cell and Regenerative Biotechnology Molecular & Cellular Reprogramming Center Institute of Advanced Regenerative Science Konkuk University 120 Neungdong-ro Gwangjin-gu Seoul 05029 Republic of Korea. ssangoo@konkuk.ac.kr. R&D Team StemExOne Co. Ltd. 307 KU Technology Innovation Bldg 120 Neungdong-ro Gwangjin- gu Seoul 05029 Republic of Korea. ssangoo@konkuk.ac.kr. Department of Biomedical Engineering Johns Hopkins University Baltimore MD 21205 USA. dhkim@jhu.edu. Department of Mechanical Engineering Johns Hopkins University Baltimore MD 21205 USA. dhkim@jhu.edu. Department of Medicine Johns Hopkins University School of Medicine Baltimore 21205 USA. dhkim@jhu.edu. Center for Microphysiological Systems Johns Hopkins University Baltimore MD 21205 USA. dhkim@jhu.edu. Institute for NanoBiotechnology Johns Hopkins University Baltimore MD 21218 USA. dhkim@jhu.edu. Department of Neurology Johns Hopkins University School of Medicine Baltimore MD 21205 USA. dhkim@jhu.edu.

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Three-dimensional Acoustic Impedance Imaging for Cultured Biological Cells

Three-Dimensional Acoustic Impedance Imaging for Cultured Bi...

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IEEE International Ultrasonics Symposium

作者： Naohiro Hozumi Nur dalila Binti Jalaluddin Thomasa Tiong Tomohiro Kawashima Yoshinobu Murakami Sachiko Yoshida Kazuto Kobayashi Dpt. Electrical & Electronic Information Engineering Toyohashi University of Technology Toyohashi Japan Dpt. Environmental & Life Sciences Toyohashi University of Technology Toyohashi Japan R&D Division Honda Electronics Co. Ltd. Toyohashi Japan

Acoustic microscope is a powerful tool for observation of biological matters. Non-invasive in-situ observation can be performed without any staining process. Unlike optical microscopy of which contrast is based on optical refractive index, the acoustic microscopy is contrasted by such as sound speed and acoustic impedance, which can be correlated to elasticity. We have proposed the acoustic microscope that can acquire three-dimensional acoustic impedance profile, and applied to cell-size observation. The presentation will deal with its hardware and signal processing, as well as the observation result of a cultured glial cell.

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