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Prediction of Leakage Rates Through Sealing Connections with Metallic Gaskets

IOP Conference Series: Earth and Environmental Science 2018年第3期199卷

作者： Xiu Feng Boqin Gu Penggao Zhang Fluid Sealing Measurement and Control Engineering Research and Development Center of Jiangsu Province Nanjing Polytechnic Institute Nanjing Jiangsu 210048 China College of Mechanical and Power Engineering Nanjing University of Technology Nanjing Jiangsu 210009 China

According to fractal theory, the leakage model of metallic gaskets was developed in order to predict leakage rate of metallic gasket sealing connections. The relationship among the leakage rate, the fractal dimension, the compressive stress and the scale coefficient obtained by experiment, is approximately the same as that by the sealing model of metallic gaskets, which indicates that the sealing model of metallic gaskets established in this paper is reasonable. The research results not only are helpful for the development and application of metallic gaskets, but also contribute to the establishment of the design criterion and the design method of metallic gasket connections.

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Minimum power scheduling under rician fading in full-duplex relay-assisted D2D communication

Minimum power scheduling under rician fading in full-duplex ...

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2017 IEEE Global Telecommunications Conference, GC 2017

作者： Penda, Demia Della Nomikos, Nikolaos Charalambous, Themistoklis Johansson, Mikael Department of Automatic Control KTH-Royal Institute of Technology Stockholm Sweden Department of Information and Communication Systems Engineering University of the Aegean Samos Greece Department of Electrical Engineering and Automation School of Electrical Engineering Aalto University Espoo Finland

ISBN: (纸本)9781538639207

In cellular systems, the combination of Device-to- Device (D2D) communication and relaying is an efficient means for improving network coverage and transmissions quality without additional infrastructure deployment. It enables communication between user pairs in situations when both their direct D2D transmission and the traditional communication via the base station experience poor channel quality. In this paper, we propose a joint relaying-operation selection and power-allocation scheme, herein called HyD2D, for relay-assisted D2D communication in Rician fading environment. The target is to choose the set of communication links that minimizes the power consumption, while ensuring a minimum success probability. To overcome the nonconvexity of the outage probability constraints under Rician fading, we use the concept of coherent-measure- of-risk from the field of finance. We therefore obtain a linear programming formulation that we can efficiently solve. Simulations show that HyD2D selects the most energy- efficient relaying operation that satisfies the success probability requirement, while leveraging only statistical channel state information. © 2017 IEEE.

关键词： Energy efficiency

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Kernel Self-Adaptive Learning-Based Satellite Telemetry Data Classification 3

Kernel Self-Adaptive Learning-Based Satellite Telemetry Data...

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3rd International Conference on Computing measurement control and Sensor Network, CMCSN 2016

作者： Li, Junbao Yang, Wenhui Liu, Datong Liu, Jing Department of Automatic Test and Control Harbin Institute of Technology China Harbin China College of Information and Communication Engineering Harbin Engineering of Technology China Harbin China

ISBN: (纸本)9781509010936

Telemetry data, containing the data of multiple subsystems such as power system, implies the on-orbit operation status information of the satellite. We can obtain performance characteristics and fault symptom of the satellite subsystems through analyzing these data. Using classification algorithm we can provide normal data for anomaly detection and find the data from various subsystems which have the same category labels. Then we will get potential knowledge of the satellite and rich expert experience. Because of the importance to national defense and people's livelihood fields, we have higher requirements about the accuracy and stability of satellite data processing. We proposed a kernel self-adaptive method based on Fisher Discriminant Analysis (FDA). Firstly map the data to high-dimensional space by kernel function. Then perform PCA in high-dimensional space. Finally classify data by Fisher Discriminant Analysis method. The selection of the kernel function and its parameters realized by self-adaptive method are based on the data. This method can achieve ideal classification accuracy toward satellite telemetry data according to our experiments. And the accuracy is stable when process data of same type. The performance of this method proved that it is reliable. © 2016 IEEE.

关键词： Satellites

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Augmented film narrative by use of non-photorealistic rendering

Augmented film narrative by use of non-photorealistic render...

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International Conference on 3D Imaging (IC3D)

作者： Victor Fajnzylber Larry González Pedro Maldonado Rafael Del Villar Rodrigo Yáñez Samuel Madariaga Milán Magdics Mateu Sbert Universidad de Chile Santiago de Chile CL University of Chile Biomedical Neuroscience Institute Universitv of Chile Communication and Image Institute Department of Control Engineering and Information Technology Budapest University of Technology and Economics University of Girona Institute of Informatics and Applications Tianjin University School of Computer Science and Technology

Our research is about the effects of non-photorealistic rendering in the perception of stereoscopic cinema. We conducted a study with 27 participants, using eye-tracker to evaluate ocular behavior during the free viewing of a stereoscopic film. We obtained ocular fixation data that were correlated with visual entropy. Gaze data leads us to believe that facing a highly abstract non-photorealistic scene the gaze seems to react under the effect of a perceptive anxiety. This ocular response seems to spontaneously assign greater sensorimotor resources to the analysis of the character's behavior, transforming his face into the main key to analyse the information and sense of the global scene. This behavior appears to us as an adaptive response to a visual environment endowed with abstraction and cognitive uncertainty. Our results could be useful for conceiving new non-photorealistic rendering tools for 3D films and cinematic virtual reality.

关键词： Visualization Three-dimensional displays Motion pictures Rendering (computer graphics) Tools Videos Stereo image processing

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Weighted Group-Consensus of Multi-Agent Systems with Bipartite Topologies 28

Weighted Group-Consensus of Multi-Agent Systems with Biparti...

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第28届中国控制与决策会议

作者： He Ying-gao Wang Xiang-yu Wuxi Institute of Arts & Technology School of Automation Southeast UniversityNanjing 210096China& Key Laboratory of Measurement and Control of Complex Systems of EngineeringMinistry of Education

ISBN: (纸本)9781467397155

This paper studies weighted group-consensus of multi-agent systems with bipartite topologies through adjusting the proportion of the current states and the delay states in the control algorithms.A sufficient condition for the convergence to a weighted group-consensus is proposed by adopting the generalized Nyquist stability criterion and the Gerschgorin disk theorem This condition is able to enlarge the upper bound on the maximum time-delay of weighted *** of the proposed result is demonstrated through numerical simulations.

关键词： Multi-agent systems group-consensus Nyquist criterion Gerschgorin disk theorem

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Star Point Energy Center Correction of Star Simulator Based on Polar Coordinates

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空间科学学报 2016年第3期36卷 407-412页

作者： WANG Lingyun WANG Xinghua WANG Bo ZHANG Guoyu SUN Gaofei LIU Shi LI Wenjun Changchun University of Science and Technology Changchun 130022 Jilin Engineering Research Center of Photoelectric Measurement and Control Instrument Changchun 130022 Tianjin Jinhang Institute of Technical Physics Tianjin 300308

In this paper,various aberrations have been *** only the effects of aberration on geometrical center position are taken into account,but also the deviation of displayed star position energy center caused by aberration is *** two aspects have been taken into comprehensive evaluation and star position *** correction method based on polar coordinates is proposed,and cumbersome partition correction and calculated quantity based on two-dimensional coordinates can be *** experimental results show that the correction processing based on polar coordinates is simpler and easier compared with any other correction *** addition,the correction results are significantly more accurate.

关键词： Aberration Energy center Correction Polar coordinates

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Optimizing mutual synchronization of rhythmic spatiotemporal patterns in reaction-diffusion systems

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Physical Review E 2017年第1期96卷 012224-012224页

作者： Yoji Kawamura Sho Shirasaka Tatsuo Yanagita Hiroya Nakao Department of Mathematical Science and Advanced Technology Japan Agency for Marine-Earth Science and Technology Yokohama 236-0001 Japan Research Center for Advanced Science and Technology University of Tokyo Tokyo 153-8904 Japan Osaka Electro-Communication University Neyagawa 572-8530 Japan Department of Systems and Control Engineering Tokyo Institute of Technology Tokyo 152-8552 Japan Department of Mechanical Engineering University of California Santa Barbara California 93106 USA

Optimization of the stability of synchronized states between a pair of symmetrically coupled reaction-diffusion systems exhibiting rhythmic spatiotemporal patterns is studied in the framework of the phase reduction theory. The optimal linear filter that maximizes the linear stability of the in-phase synchronized state is derived for the case in which the two systems are nonlocally coupled. The optimal nonlinear interaction function that theoretically gives the largest linear stability of the in-phase synchronized state is also derived. The theory is illustrated by using typical rhythmic patterns in FitzHugh-Nagumo systems as examples.

关键词： Coupled oscillators Pattern formation Spiral & scroll waves Synchronization High dimensional systems Reaction diffusion systems Traveling waves

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Corrigendum to: The TianQin project: current progress on science and technology

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Progress of Theoretical and Experimental Physics 2021年第5期2021卷

作者： Mei, Jianwei Bai, Yan-Zheng Bao, Jiahui Barausse, Enrico Cai, Lin Canuto, Enrico Cao, Bin Chen, Wei-Ming Chen, Yu Ding, Yan-Wei Duan, Hui-Zong Fan, Huimin Feng, Wen-Fan Fu, Honglin Gao, Qing Gao, TianQuan Gong, Yungui Gou, Xingyu Gu, Chao-Zheng Gu, De-Feng He, Zi-Qi Hendry, Martin Hong, Wei Hu, Xin-Chun Hu, Yi-Ming Hu, Yuexin Huang, Shun-Jia Huang, Xiang-Qing Jiang, Qinghua Jiang, Yuan-Ze Jiang, Yun Jiang, Zhen Jin, Hong-Ming Korol, Valeriya Li, Hong-Yin Li, Ming Li, Pengcheng Li, Rongwang Li, Yuqiang Li, Zhu Li, Zhulian Li, Zhu-Xi Liang, Yu-Rong Liang, Zheng-Cheng Liao, Fang-Jie Liu, Qi Liu, Shuai Liu, Yan-Chong Liu, Li Liu, Pei-Bo Liu, Xuhui Liu, Yuan Lu, Xiong-Fei Lu, Yang Lu, Ze-Huang Luo, Yan Luo, Zhi-Cai Milyukov, Vadim Ming, Min Pi, Xiaoyu Qin, Chenggang Qu, Shao-Bo Sesana, Alberto Shao, Chenggang Shi, Changfu Su, Wei Tan, Ding-Yin Tan, Yujie Tan, Zhuangbin Tu, Liang-Cheng Wang, Bin Wang, Cheng-Rui Wang, Fengbin Wang, Guan-Fang Wang, Haitian Wang, Jian Wang, Lijiao Wang, Panpan Wang, Xudong Wang, Yan Wang, Yi-Fan Wei, Ran Wu, Shu-Chao Xiao, Chun-Yu Xu, Xiao-Shi Xue, Chao Yang, Fang-Chao Yang, Liang Yang, Ming-Lin Yang, Shan-Qing Ye, Bobing Yeh, Hsien-Chi Yu, Shenghua Zhai, Dongsheng Zhang, Caishi Zhang, Haitao Zhang, Jian-dong Zhang, Jie Zhang, Lihua Zhang, Xin Zhang, Xuefeng Zhou, Hao Zhou, Ming-Yue Zhou, Ze-Bing Zhu, Dong-Dong Zi, Tie-Guang Luo, Jun TianQin Research Center for Gravitational Physics & School of Physics and Astronomy Sun Yat-sen University (Zhuhai Campus) Zhuhai 519082 P.R. China Centre for Gravitational Experiments School of Physics MOE Key Laboratory of Fundamental Physical Quantities Measurement & Hubei Key Laboratory of Gravitation and Quantum Physics PGMF Huazhong University of Science and Technology Wuhan 430074 P.R. China SISSA Via Bonomea 265 34136 Trieste Italy and INFN Sezione di Trieste & IFPU – Institute for Fundamental Physics of the Universe Via Beirut 2 34014 Trieste Italy Former Faculty Politecnico di Torino Corso Duca degli Abruzzi 24 10129 Torino Italy Yunnan Observatories Chinese Academy of Sciences Kunming 650011 China School of Physical Science and Technology Southwest University Chongqing 400715 China Beijing Institute of Control Engineering Beijing 100094 P.R. China SUPA School of Physics and Astronomy University of Glasgow Glasgow G12 8QQ UK DFH Satellite Co. Ltd. Beijing 100094 P.R. China National Astronomical Observatories Chinese Academy of Sciences Beijing 100012 China School of Astronomy and Space Science University of Chinese Academy of Sciences Beijing 100049 China School of Physics and Astronomy University of Birmingham Birmingham B15 2TT United Kingdom Center for High Energy Physics & Department of Physics and State Key Laboratory of Nuclear Physics and Technology Peking University No. 5 Yiheyuan Rd Beijing 100871 P.R. China Lomonosov Moscow State University Sternberg Astronomical Institute Moscow 119992 Russia Dipartimento di Fisica “G. Occhialini” Universitá degli Studi Milano Bicocca Piazza della Scienza 3 I-20126 Milano Italy School of Aeronautics and Astronautics Shanghai Jiao Tong University Shanghai 200240 China Purple Mountain Observatory Chinese Academy of Sciences Nanjing 210023 & School of Astronomy and Space Science University of Science and Technology of China Hefei Anhui 230026 P.R. China Max-Planck-Institut für Gravitationsphysik (Al

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High-Performance Photo-Modulated Thin-Film Transistor Based on Quantum dots/Reduced Graphene Oxide Fragment-Decorated ZnO Nanowires

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Nano-Micro Letters 2016年第3期8卷 247-253页

作者： Zhi Tao Yi-an Huang Xiang Liu Jing Chen Wei Lei Xiaofeng Wang Lingfeng Pan Jiangyong Pan Qianqian Huang Zichen Zhang School of Electronic Science and Engineering Southeast University State Key Laboratory of Precision Measurement Technology and Instruments Collaborative Innovation Center for Micro/Nano Fabrication Device and System Department of Precision Instrument Tsinghua University School of Information and Communication Engineering Beijing University of Posts and Telecommunications Institute of Semiconductors Chinese Academy of Science

In this paper, a photo-modulated transistor based on the thin-film transistor structure was fabricated on the flexible substrate by spin-coating and magnetron sputtering. A novel hybrid material that composed of Cd Se quantum dots and reduced graphene oxide(RGO) fragment-decorated ZnO nanowires was synthesized to overcome the narrow optical sensitive waveband and enhance the photo-responsivity. Due to the enrichment of the interface and heterostructure by RGO fragments being utilized, the photo-responsivity of the transistor was improved to 2000 AW^(-1) and the photo-sensitive wavelength was extended from ultraviolet to visible. In addition, a positive back-gate voltage was employed to reduce the Schottky barrier width of RGO fragments and ZnO nanowires. As a result, the amount of carriers was increased by 10 folds via the modulation of back-gate voltage. With these inherent properties, such as integrated circuit capability and wide optical sensitive waveband, the transistor will manifest great potential in the future applications in photodetectors.

关键词： Thin-film transistor Quantum dots Reduced graphene oxide ZnO nanowires

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Ductal carcinoma in situ detection in breast thermography by extreme learning machine and combination of statistical measure and fractal dimension

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Journal of Ambient Intelligence and Humanized Computing 2017年 1-11页

作者： Wang, Shui-Hua Muhammad, Khan Phillips, Preetha Dong, Zhengchao Zhang, Yu-Dong Jiangsu Key Laboratory of Advanced Manufacturing Technology HuaiyinJiangsu223003 China School of Computer Science and Technology Henan Polytechnic University JiaozuoHenan454000 China Ministry of Education Key Laboratory of Measurement and Control of Complex Systems of Engineering Southeast University Nanjing China College of Software Convergence Sejong University Seoul Korea Republic of Department of Informatics University of Leicester LeicesterLE1 7RH United Kingdom West Virginia School of Osteopathic Medicine 400 N Lee St LewisburgWV24901 United States Translational Imaging Division and MRI Unit Columbia University and New York State Psychiatric Institute New YorkNY10032 United States

Ductal carcinoma in situ (DCIS) is a severe breast disease. It generates little symptom and may be neglected in prodromal stage. In this study, we developed a novel DCIS detection method based on breast thermography, which can provide earlier alert than other exams. We created a 40 breast-thermogram dataset. We used six statistical measures, and we used fractal dimension to describe the texture measure. The extreme learning machine was used as the classifier. Our developed system yielded a sensitivity of 93.0 ± 2.6%, a specificity of 92.5 ± 2.6%, and an accuracy of 92.8 ± 1.8%. The extreme learning machine was better than support vector machine, artificial neural network, decision tree, and weighted k-nearest neighbors. Besides, our developed system was superior to six state-of-the-art approaches. © 2017 Springer-Verlag GmbH Germany, part of Springer Nature

关键词： Fractal dimension

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