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arXiv 2019年

作者： Wang, Rong Yin, Zhen-Qiang Lu, Feng-Yu Wang, Shuang Chen, Wei Huang, Wei Xu, Bing-Jie Guo, Guang-Can Han, Zheng-Fu Cas Key Laboratory of Quantum Information Cas Center for Excellence in Quantum Information and Quantum Physics University of Science and Technology of China Hefei230026 China State Key Laboratory of Cryptology P. O. Box 5159 Beijing100878 China Science and Technology on Communication Security Laboratory Institute of Southwestern Communication Chengdu Sichuan610041 China

Twin-field quantum key distribution (TF-QKD) and its variant protocols are highly attractive due to its advantage of overcoming the well-known rate-loss limit for QKD protocols, i.e. R 6 log2(1-η) with η standing for the channel transmittance. These protocols can be divided into two types, with phase randomization from [0, π] and without phase randomization in code mode. Here, we generalize the two types into a unified protocol, where Alice and Bob prepare coherent states with 2M (M ∈-1, 2, 3...}) different phases. Moreover, our security proof indicates that the achievable distance becomes longer with M exponentially increasing, as a trade-off, the secret key rate will be lowered at short distance due to phase postselection. Numerical simulations show that the protocol with M = 2 may be the best choice in experiment. Copyright © 2019, The Authors. All rights reserved.

关键词： Random processes

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Privacy-preserving medical treatment system through nondeterministic finite automata

arXiv

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arXiv 2020年

作者： Yang, Yang Deng, Robert H. Liu, Ximeng Wu, Yongdong Weng, Jian Zheng, Xianghan Rong, Chunming School of Information Systems Singapore Management University Singapore College of Mathematics and Computer Science Fuzhou University Fujian China State Key Laboratory of Integrated Services Networks Xidian University Guangdong Provincial Key Laboratory of Data Security and Privacy Protection Guangzhou China Fujian Provincial Key Laboratory of Information Processing and Intelligent Control Minjiang University Fuzhou China School of Information Systems Singapore Management University Singapore Singapore Department of Computer Science Jinan University Guangdong China College of Mathematics and Computer Science Fuzhou University Fujian China Department of Electronic Engineering and Computer Science University of Stavanger Norway MingByte Technology Qingdao China

In this paper, we propose a privacy-preserving medical treatment system using nondeterministic finite automata (NFA), hereafter referred to as P-Med, designed for the remote medical environment. P-Med makes use of the nondeterministic transition characteristic of NFA to flexibly represent the medical model, which includes illness states, treatment methods and state transitions caused by exerting different treatment methods. A medical model is encrypted and outsourced to the cloud to deliver telemedicine services. Using P-Med, patient-centric diagnosis and treatment can be made on-the-fly while protecting the confidentiality of a patient's illness states and treatment recommendation results. Moreover, a new privacy-preserving NFA evaluation method is given in P-Med to get a confidential match result for the evaluation of an encrypted NFA and an encrypted data set, which avoids the cumbersome inner state transition determination. We demonstrate that P-Med realizes treatment procedure recommendation without privacy leakage to unauthorized parties. We conduct extensive experiments and analyses to evaluate efficiency. Copyright © 2020, The Authors. All rights reserved.

关键词： Diseases

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From concept to action: a united, holistic and One Health approach to respond to the climate change crisis

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Infectious Diseases of Poverty 2022年第1期11卷 68-73页

作者： Renhe Zhang Xu Tang Jian Liu Martin Visbeck Huadong Guo Virginia Murray Catherine Mcgillycuddy Bing Ke Gretchen Kalonji Panmao Zhai Xiaoming Shi Jiahai Lu Xiaonong Zhou Haidong Kan Qunli Han Qian Ye Yong Luo Jianmin Chen Wenjia Cai Huiling Ouyang Riyanti Djalante Alexander Baklanov Lu Ren Guy Brasseur George Fu Gao Lei Zhou Integrated Research on Disaster Risk International Centre of Excellence on Risk Interconnectivity and Governance on Weather/Climate Extremes Impact and Public Health&Institute of Atmospheric Sciences Fudan UniversityShanghai200438China Science Division United Nations Environment Programme(UNEP)United Nations AvenueGigiriPO Box 30552Nairobi00100Kenya GEOMAR Helmholtz Centre for Ocean Research Kiel and Kiel University KielGermany Key Laboratory of Digital Earth Science Aerospace Information Research InstituteChinese Academy of SciencesBeijingChina University of Chinese Academy of Sciences Chinese Academy of SciencesBeijingChina UK Health Security Agency LondonSE18UGUK The Administrative Center for China’s Agenda 21 Ministry of Science and Technology of ChinaBeijing100038China Institute for Disaster Management and Reconstruction Sichuan UniversityChengdu610207China State Key Laboratory of Severe Weather Chinese Academy of Meteorological SciencesBeijing100081China China CDC Key Laboratory of Environment and Population Health National Institute of Environmental HealthChinese Center for Disease Control and PreventionBeijing100021China One Health Center of Excellence for Research and Training School of Public HealthSun Yat-Sen UniversityGuangzhouChina National Institute of Parasitic Diseases Chinese Center for Disease Control and Prevention(Chinese Center for Tropical Diseases Research)ShanghaiChina Integrated Research On Disaster Risk-IPO BeijingChina State Key Lab of Earth Surface Processes and Resource Ecology Beijing Normal UniversityBeijing100875China Ministry of Education Key Laboratory for Earth System Modeling and Department of Earth System ScienceTsinghua UniversityBeijingChina ASEAN Secretariat Indonesia Integrated Research on Disaster Risk(IRDR)JakartaIndonesia Science and Innovation Department World Meteorological Organization(WMO)7 bisAvenue de la PaixBP2300CH-1211Geneva 2Switzerland Max Planck Institute for Meteorology HamburgGermany Chinese Center for Dis

It is unequivocal that human influence has warmed the planet,which is seriously affecting the planetary health including human *** climate change should not only be a slogan,but requires a united,holistic action and a paradigm shift from crisis response to an ambitious and integrated approach *** the urgent needs to tackle the risk connection between climate change and One Health,the four key messages and recommendations that with the intent to guide further research and to promote international cooperation to achieve a more climate-resilient world are provided.

关键词： Climate change One Health International coordination and cooperation Risk-oriented recommendations

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Outage behaviors of NOMA-based satellite network over shadowed-rician fading channels

arXiv

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arXiv 2020年

作者： Yue, Xinwei Liu, Yuanwei Yao, Yuanyuan Li, Tian Li, Xuehua Liu, Rongke Nallanathan, Arumugam Key Laboratory of Modern Measurement & Control Technology Ministry of Education School of Information and Communication Engineering Beijing Information Science and Technology University Beijing100101 China School of Electronic Engineering and Computer Science Queen Mary University of London LondonE1 4NS United Kingdom 54th Research Institute of China Electronics Technology Group Corporation Shijiazhuang Hebei050081 China Beijing University of Posts and Telecommunications Beijing100876 China School of Electronic and Information Engineering Beihang University Beijing100191 China

This paper investigates the application of non-orthogonal multiple access (NOMA) to satellite communication network over Shadowed-Rician fading channels. The impact of imperfect successive interference cancellation (ipSIC) on NOMA-based satellite network is taken into consideration from the perspective of practical scenarios. We first derive new exact expressions of outage probability for the p-th terrestrial user and provide the corresponding asymptotic analysis results. The diversity order of zero and p are achieved by the p-th terrestrial user with ipSIC and perfect successive interference cancellation (pSIC), respectively. Finally, the presented simulation results show that: 1) On the condition of pSIC, the outage behaviors of NOMA-based satellite network are superior to that of orthogonal multiple access;2) With the value of residual interference increasing, the outage performance of terrestrial users with ipSIC is becoming worse seriously;and 3) Infrequent light shadowing of Shadowed-Rician fading brings the better outage probability compared to frequent heavy and average shadowing. Copyright © 2020, The Authors. All rights reserved.

关键词： Asymptotic analysis

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Realization of remote sensing image segmentation based on K-means clustering

Realization of remote sensing image segmentation based on K-...

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第二届材料科学应用与能源材料国际研讨会

作者： Yanhong Wang Denghui Li Yuying Wang Guangxi Key Lab of Wireless Wideband Communication & Signal Processing Institute Of Information Technology of Guilin University of Electronic Technology Key Laboratory of Cognitive Radio and Information Processing Ministry of Education(Guilin University of Electronic Technology) GUET School of Computer Science and Information Security of GUET

Segmentation of remote sensing image is the key technology of positioning ***,we transform the remote sensing image from RGB pace to Lab ***,three centres are iterated by using K-means ***,in order to eliminate the influence,the closed operation of mathematical morphology is used to correct the segmented *** results show that it can segment the road from the remote sensing image in lab mode,by using K-means clustering ***,Lab mode is more suitable for k-mean than other modes.

关键词： Realization of remote sensing image segmentation based on K-means clustering image

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Pose Estimation of a Single Circle Based on 1D Homography

Pose Estimation of a Single Circle Based on 1D Homography

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2019第十一届数字图像处理国际会议

作者： Lv Yao-Wen Xu Zicheng Liu Wei Xu Xi-Ping Key laboratory of optoelectronic measurement and control and optical information transmission technology ministry of education College of optoelectronic engineering Changchun University of science and technology College of communication engineering Jilin University

Circular target has an important application in pose estimation based on vision by the virtue of anti-occlusion,anti-noise and easy recognition on the *** paper focuses on the pose estimation problem when the projection of circle center is determined,and a pose calculation method is proposed based on 1 D ***,under the normalized image coordinates,a homography matrix is determined from three points,one is the projection of circle center,the other two are the intersections of the line through the projected center and the projected *** to the geometrical properties of the homography matrix,a linear method for computing the circular pose from multiple homography matrices is ***,the reprojection errors of image points are taken as the objective function to optimize the linear solution ***,the proposed method is compared with the two existing pose estimation methods through *** experimental results show that the proposed method is slightly superior to the existing methods in terms of anti-noise performance and has obvious advantages in remote pose estimation.

关键词： machine vision pose estimation circle 1D homography

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An Intrusion Prevention Scheme for Malicious Network Traffic Based on SDN

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IOP Conference Series: Materials science and Engineering 2020年第1期790卷

作者： Xiaofeng Xu Jiahao Dai Yifang Zhi Science and Technology on Communication Information Security Control Laboratory China China Electronic Group Corporation NO.36 Institute Zhejiang Jiaxing China Xidian University Shanxi Xi'an China

In recent years, SDN technology has developed rapidly, and the security of SDN is the key to its further development and application. Intrusion prevention system possesses both the features of intrusion detection and protection, which is one of the important methods to ensure the security of SDN network. In this paper, we proposed a SDN-based intrusion prevention scheme for SDN security. The scheme utilizes the programmability of SDN to create four modules on the application plane of the controller, including the network monitoring module, IP address detection module, destructive packets detection and Snort linkage module. The scheme also provides users with Web UI and manual/automatic operation mode. Finally, we deployed the scheme on the Mininet platform with the Floodlight controller.

关键词：

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Ultra-wideband Dual-layer Magnetic Absorber with Active Impedance Matching

Ultra-wideband Dual-layer Magnetic Absorber with Active Impe...

引用

Progress in Electromagnetics Research Symposium - Fall (PIERS - FALL)

作者： Wei Hu Haobin Zhang Wenxian Zheng Yongjun Yang Weiwei Gu Daniele Inserra Zhengwu Xu Gui Li Dongliang Zhang Jian Li Yongjun Huang Guangjun Wen School of Information and Communication Engineering University of Electronic Science and Technology of China Chengdu China Science and Technology on Electronic Information Control Laboratory Chengdu China Tsinghua Shenzhen International Graduate School Shenzhen China Yibin Intelligent Information System Institute University of Electronic Science and Technology of China Yibin China

ISBN: (数字)9781728153049

ISBN: (纸本)9781728153056

A novel broadband absorber is designed in this paper, which consists of two layers of magnetic materials and metal reflector. In order to achieve broadband performance, the upper layer and the lower layer magnetic material are designed into periodically cylindrically holes with performance multi-resonance frequency. The simulations showed that an absorption more than 90% for normal incident is obtained in the frequency range from 1.62GHz to 18GHz. The absorber has polarization insensitivity when the incident electromagnetic wave is obliquely with TE/TM polarization, and the absorbing is stable within 0-60 degrees incident. The absorber has potential application in radar system and RCS reduced.

关键词： Magnetic materials Absorption Broadband communication Resonant frequency Contracts Permeability

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Ultra-wideband Active Absorber Based on Multiple Frequency Selective Surface and Magnetic Layers

Ultra-wideband Active Absorber Based on Multiple Frequency S...

引用

Progress in Electromagnetics Research Symposium - Fall (PIERS - FALL)

作者： Weiwei Gu Haobin Zhang Wenxian Zheng Yongjun Yang Wei Hu Daniele Inserra Zhengwu Xu Gui Li Dongliang Zhang Jian Li Yongjun Huang Guangjun Wen School of Information and Communication Engineering University of Electronic Science and Technology of China Chengdu China Science and Technology on Electronic Information Control Laboratory Chengdu China Tsinghua Shenzhen International Graduate School Shenzhen China Yibin Intelligent Information System Institute University of Electronic Science and Technology of China Yibin China

ISBN: (数字)9781728153049

ISBN: (纸本)9781728153056

In this paper, an ultra-thin UWB absorber is designed by using Non-Foster circuit and Frequency Selective Surface. The absorbing structure consists of Non-Foster matching layer, magnetic material layer with FSS and ground layer. To broaden the absorbing bandwidth, two layers of magnetic materials are shaped by holes. It is verified by simulation that the absorptivity is higher than 80% in 0.15GHz-18GHz when the TM polarized wave is incident. And the thickness of the absorber is about 8mm, which is 1/250 of the operating wavelength. The ultra-thin UWB absorber can be widely used in wireless communication and radar applications.

关键词： Periodic structures Impedance Surface impedance Loading Electromagnetics Integrated circuit modeling Magnetic materials

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An Autoencoder-Based Dimensionality Reduction Algorithm for Intelligent Clustering of Mineral Deposit Data

An Autoencoder-Based Dimensionality Reduction Algorithm for ...

引用

2019中国智能自动化大会(CIAC 2019)

作者： Yan Li Xiong Luo Maojian Chen Yueqin Zhu Yang Gao School of Computer and Communication Engineering University of Science and Technology Beijing Institute of Artificial Intelligence University of Science and Technology Beijing Beijing Key Laboratory of Knowledge Engineering for Materials Science Development and Research Center China Geological Survey China Information Technology Security Evaluation Center

Currently,there has been a dramatic growth of data size and data dimension in geophysics,while achieving the rapid advancements of geological big data technologies with the support of various detection ***,highdimensional and massive geological data impose very challenging obstacles to traditional data analysis *** the success of deep learning methods and techniques in big data analysis applications,it is expected that they are also able to achieve the satisfactory performance in dealing with high-dimensional complex geological ***,through the combination of one of the effective implementations of deep learning,i.e.,autoencoder,and a clustering algorithm,i.e.,K-means,in this paper we achieve the dimensionality reduction for complex data,so as to extract useful data features from mineral deposit data,with the purpose of improving computational *** experimental results demonstrate the effectiveness our developed method.

关键词： High-dimensional data Dimensionality reduction Autoencoder K-means algorithm

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