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11th National Conference on Earthquake engineering 2018: Integrating Science, engineering, and Policy, NCEE 2018

作者： Cimellaro, G.P. Domaneschi, M. Boroschek, R. Cardoni, A. Kammouh, O. Galdo, D. Apostoliti, C. Cares, D. Mahin, S. Dept. of Civil and Environmental Engineering University of California BerkeleyCA94720 United States Dept. of Civil Structural and Geotechnical Engineering Politecnico di Torino 10129 Italy Civil Engineering Department University of Chile Blanco Encalada Santiago2002 Chile Dept. of Control and Computer Engineering Politecnico di Torino 10129 Italy

ISBN: (纸本)9781510873254

This work aims at establishing laboratory requirements and testing conditions in order to understand the physical and emotional stability of people during a ground shaking. Several individuals with different human characteristics (gender, age, height, etc.) are considered in the test. Two different laboratory setups are presented. A position device (Kinect) and video targetless tracking algorithm has been used to collect the human body position during the shaking. A two and a three dimensional shaking tables are used to generate artificial earthquakes with different frequency bands. In addition, a well detailed virtual reality setting is applied to the testing site in order to illustrate the real environment. During the experiment, a special attention has been given to the factor of "surprise", which is necessary to ensure a natural reaction of the individuals. The result of the experiment proved common behaviors among the individual samples during the shaking. This work is considered a first step towards a large test campaign, which is necessary to obtain comprehensive statistics on this topic. Copyright © NCEE 2018: Integrating Science, engineering, and *** rights reserved.

关键词： Virtual reality

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Fir-based narrowband active noise control with a new online secondary-path modeling subsystem 25

Fir-based narrowband active noise control with a new online ...

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25th International Congress on Sound and Vibration 2018: Hiroshima Calling, ICSV 2018

作者： Ma, Yaping Xiao, Yegui Wei, Guo Sun, Jinwei Ma, Liying Khorasani, Khashayar Dept. Automatic Testing and Control Harbin Institute of Technology Harbin150001 China Dept. Information and Management Systems Prefectural University of Hiroshima Hiroshima734-8558 Japan Dept. Electrical and Computer Engineering Concordia University MontrealQC Canada

ISBN: (纸本)9781510868458

Injecting auxiliary random noise is an effective approach to implementing the online secondary-path modeling (SPM) subsystem in active noise control (ANC). In this paper, a typical FIR-based narrowband ANC (NANC) system with online SPM is proposed to reduce the sinusoidal noise generated by rotating machines, especially its lower frequency portion. A first-order FIR filter or magnitude/phase adjuster (MPA) serves as a sub-controller in each frequency channel. The contributions of this work are twofold. A bandpass filter bank based on IIR notch filters is introduced to mitigate the coupling between the controller (MPAs) and the SPM subsystem, which significantly improves the performance of the overall system. Furthermore, the proposed system requires only one x-filtering block regardless of the number of targeted frequencies, which considerably reduces the computational cost of the system. Simulations as well as application to real noise are conducted to demonstrate that the proposed system is superior to its conventional version in terms of overall system convergence and online SPM quality. © 25th International Congress on Sound and Vibration 2018, ICSV 2018: Hiroshima Calling. All rights reserved.

关键词： controllers

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Dynamic estimation of visco-elastic mechanical characteristics of biological samples under micro manipulation 15

Dynamic estimation of visco-elastic mechanical characteristi...

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15th International Conference on Informatics in control, Automation and Robotics, ICINCO 2018

作者： Giamberardino, Paolo Di Aceto, Maria Laura Giannini, Oliviero Verotti, Matteo Dept. Computer Control and Management Engineering Antonio Ruberti Sapienza University of Rome Italy University Niccol Cusano Via Don Carlo Gnocchi 3 Rome Italy

ISBN: (纸本)9789897583216

This paper focuses on the possibility of using a recently fabricated micro gripper for the on line estimation of the mechanical characteristics (damping and elasticity) of a sample pinched by the jaws, with particular reference to biological tissues. A classical on line dynamical parameter estimator is computed for the given system with different estimation computations, and its effectiveness has been verified by numerical simulations. Results confirm the feasibility of a micro-robotic clinical device for surgery use equipped with a tissue recognition ability. Copyright © 2018 by SCITEPRESS – Science and Technology Publications, Lda. All rights reserved

关键词： Tissue

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A novel frequency domain maximum likelihood approach for estimating transport coefficients in cylindrical geometry for nuclear fusion devices

A novel frequency domain maximum likelihood approach for est...

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IEEE Annual Conference on Decision and control

作者： Matthijs van Berkel Gerardus W. Oosterwegel Martijn Anthonissen Hans J. Zwart Gerd Vandersteen DIFFER-Dutch Institute for Fundamental Energy Research Energy Systems and Control group Eindhoven The Netherlands Dept. of Mathematics and Computer Science Eindhoven University of Technology Eindhoven The Netherlands Dept. of Mechanical Engineering Eindhoven University of Technology Eindhoven The Netherlands Dept. of Fundamental Electricity and Instrumentation Vrije Universiteit Brussel (VUB) Brussels Belgium

ISBN: (数字)9781728113982

ISBN: (纸本)9781728113999

This paper introduces a novel maximum likelihood approach to determine the local thermal transport coefficients belonging to diffusion and convection from excitation (perturbative) transport experiments. It extends previous work developed for linear (slab) geometry to cylindrical (toroidal) geometry for fusion reactors. The previous linear geometry approach is based on analytic solutions of the partial differential equation. However, for cylindrical geometries with convection the analytic solutions are confluent hypergeometric functions (CHFs) with complex valued arguments. Most numerical libraries do not support CHFs evaluation with complex valued arguments. Hence, this paper proposes the use of an ultra-fast transfer function evaluation based on sparse numerical solutions for the discretized partial differential equation. This solution is implemented in MATLAB and incorporated in the frequency domain Maximum Likelihood Estimation framework. Consequently, transport coefficients can be estimated consistently when measurements are perturbed by coloured and spatially correlated noise.

关键词： Fusion reactors Geometry Maximum likelihood estimation Temperature sensors Partial differential equations Frequency-domain analysis

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Fault-Independent Test-Generation for Software-Based Self-Testing

Fault-Independent Test-Generation for Software-Based Self-Te...

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IEEE International Symposium on On-Line Testing and Robust System Design

作者： Panagiotis Georgiou Xrysovalantis Kavousianos Riccardo Cantoro Matteo Sonza Reorda Dept. of Control and Computer Engineering Politecnico di Torino Italy

Software-based self-test (SBST) is being widely used in both manufacturing and in-the-field testing of processor-based devices and Systems-on-Chips. Unfortunately, the stuck-at fault model is increasingly inadequate to match the new and different types of defects in the most recent semiconductor technologies, while the explicit and separate targeting of every fault model in SBST is cumbersome due to the high complexity of the test-generation process, the lack of automation tools, and the high CPU-intensity of the fault-simulation process. Moreover, defects in advanced semiconductor technologies are not always covered by the most commonly used fault-models, and the probability of defect-escapes increases even more. To overcome these shortcomings we propose the first fault-independent SBST method. The proposed method is almost fully automated, it offers high coverage of non-modeled faults by means of a novel SBST-oriented probabilistic metric, and it is very fast as it omits the time-consuming test-generation/fault-simulation processes. Extensive experiments on the OpenRISC OR1200 processor show the advantages of the proposed method.

关键词： Circuit faults Logic gates Clocks Registers Testing Integrated circuit modeling

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Proof-of-principle experimental demonstration of twin-field type quantum key distribution

arXiv

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arXiv 2019年

作者： Zhong, Xiaoqing Hu, Jianyong Curty, Marcos Qian, Li Lo, Hoi-Kwong Center for Quantum Information and Quantum Control Dept. of Physics University of Toronto TorontoONM5S 1A7 Canada Center for Quantum Information and Quantum Control Dept. of Electrical & Computer Engineering University of Toronto TorontoONM5S 3G4 Canada EI Telecomunicación Dept. of Signal Theory and Communications University of Vigo VigoE-36310 Spain

The twin-field (TF) quantum key distribution (QKD) protocol and its variants are highly attractive because they can beat the well-known rate-loss limit (i.e., the PLOB bound) for QKD protocols without quantum repeaters. In this paper, we perform a proof-of-principle experimental demonstration of TF-QKD based on the protocol proposed by Curty et al. [38] which removes from the original TF-QKD scheme the need for post-selection on the matching of a global phase, and can deliver nearly an order of magnitude higher secret key rate. Furthermore, we overcome the major difficulty in the practical implementation of TF-QKD, namely, the need to stabilize the phase of the quantum state over kilometers of fiber. A Sagnac loop structure is utilized to ensure excellent phase stability between the different parties. Using decoy states, we demonstrate secret-key generation rates that beat the PLOB bound when the channel loss is above 40 dB. Copyright © 2019, The Authors. All rights reserved.

关键词： Quantum cryptography

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Removal notice to "VitSeg: Weakly supervised vitiligo segmentation in skin image" [Comput. Med. Imag. Graph. 85 (2020) 101779]

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computerized medical imaging and graphics : the official journal of the computerized Medical Imaging Society 2021年 91卷 101954页

作者： Zhangxing Bian Siyu Xia Chao Xia Ming Shao Key Laboratory of Measurement and Control of CSE Ministry of Education School of Automation Southeast University Nanjing China Electrical Engineering and Computer Science University of Michigan Ann Arbor MI USA. Key Laboratory of Measurement and Control of CSE Ministry of Education School of Automation Southeast University Nanjing China. School of Electronics Information and Electrical Engineering ShangHai Jiao Tong University Shanghai China. Dept. of Computer and Information Science University of Massachusetts Dartmouth Dartmouth MA USA.

This article has been removed: please see Elsevier Policy on Article Withdrawal (https://***/about/our-business/policies/article-withdrawal). This article has been removed at the request of the Authors and Editor-in-Chief because complete consent was not obtained by the authors in accordance with journal policy prior to publication. The authors and the journal sincerely apologize for this oversight.

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A Comprehensive MOOC Creation Approach

A Comprehensive MOOC Creation Approach

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Learning With MOOCS (LWMOOCS)

作者： Leonardo Favario Dept. of Computer and Control Engineering Politecnico di Torino Torino TO Italy

ISBN: (纸本)9781538665343

In the last decade, the world of online education has seen the advent of Massive Open Online Courses. The secret behind those courses lies in the scale: potentially, millions of people can access them and take advantage of the educational resources wherever they are on the planet. Creating successful courses is challenging since it requires an extended portfolio of skills. However, not all the necessary attentions have been provided to the content creators who, most of the times, do not have an extended knowledge of the complex technologies required in order to efficiently prepare a MOOC. This paper focuses on this issue introducing a set of integrated e-learning tools offering an enhanced MOOC creation experience. The preliminary users already prepared some courses exploiting this novel approach and are willing to collaborate to craft the next improved version of the platform.

关键词： Tools Electronic learning Webcams Microphones computer architecture Search engines

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An integral sliding mode control for the magnetic levitation system based on backstepping approach

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IOP Conference Series: Materials Science and engineering 2020年第1期881卷

作者： Shibly Ahmed Al-Samarraie Ivan Isho Gorial Mustafa Hussein Mshari Assistant Prof. Control & Systems Engineering Department University of Technology Baghdad Iraq Lecturer Control & Systems Engineering Department University of Technology Baghdad Iraq Computer Eng. Dept. AL-Esraa University College Baghdad-Iraq

Due to their reduced maintenance costs, increased power efficiency and reduced power consumption, the Magnetic Levitation (Maglev) system make a significant contribution to the industrial application. Maglev's production of electricity (e.g. wind turbines), maglev trains and medical devices (e.g. artificial heart pump magnetically suspended) are typical applications. This paper suggests designing a nonlinear control for the Maglev system model which represented by a third-order model consists of the mechanical (ball position and velocity) and electrical (the current) subsystems. The controller is designed utilizing the Integral Sliding Mode control (ISMC) and based on the Backstepping approach. The tracking accuracy of the ball position to the desired reference is determined by computing the ultimate boundedness as a function to the controller parameters and that using the Lyapunov function. The numerical simulation results showed the robustness and the efficiency of the proposed controller where the tracking error limited by the computed bound.

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Closed Loop Fault Detectability Based on a Gap-Metric 2

Closed Loop Fault Detectability Based on a Gap-Metric

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2nd IEEE Conference on control Technology and Applications, CCTA 2018

作者： Sekunda, Andre Ding, Steven Kjolstad Poulsen, Niels Niemann, Henrik Department of Electrical Engineering Automation and Control Tech. University of Denmark Kgs. LyngbyDk-2800 Denmark Dept. of Automatic Control and Complex Systems University of Duisburg-Essen Duisburg47057 Germany Dept. of Applied Mathematics and Computer Science Tech. University of Denmark Kgs. LyngbyDk-2800 Denmark

ISBN: (纸本)9781538676981

Systems are often controlled using feedback loops. Fault diagnosis schemes are usually designed assuming that there is no feedback loop. Therefore fault diagnosis methods need to accommodate for the feedback loop. One such method is active fault diagnosis based on a fault signature system. This method is derived using the YJBK parametrisation, named after Youla, Jabr, Bongiorno and Kucera. It uses the derived fault signature system to determine the detectability of possible faults in the system. Deriving the fault signature system requires knowledge about the controller. This paper demonstrates the possibility of estimating the detectability of faults in the fault signature system using a gap-metric. The gap-metric has the advantage of only requiring knowledge about the plant. By using the gap-metric it is possible to estimate the detectability of faults without using information about the controller. © 2018 IEEE.

关键词： Fault detection

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