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Dynamic Calculation Model for Pressure Safety Monitoring of Municipal Water Supply network with Interference Elimination Function between Neighboring Nodes

Dynamic Calculation Model for Pressure Safety Monitoring of ...

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IEEE Advanced Information technology, Electronic and Automation Control Conference (IAEAC)

作者： Leiji Zhu Yong Xiong Xiumei Yang Broadband Wireless Communication Technology Laboratory Shanghai Institute of Microsystem and Information Technology Chinese Academy of Sciences Shanghai China Key Laboratory of Wireless Sensor Network and Communication Chinese Academy of Sciences Shanghai China

ISBN: (数字)9781728180281

ISBN: (纸本)9781728180298

In order to monitor the pressure safety status of municipal water supply network, the dynamic calculation model of pressure safety monitoring of municipal water supply network with the function of eliminating interference between neighboring nodes was studied by using the Internet of things and data processing technology. Based on the calculation of the attenuation coefficient of pressure wave in municipal pipe network, this paper discusses the establishment method of neighbor coordinates between monitoring points by the constraint of pressure wave attenuation distance, and then combines the data processing technologies such as pressure mean value, pressure difference, pressure variance, pressure variance growth rate, etc., to construct a dynamic monitoring calculation model of pressure safety state with the function of eliminating interference between neighboring nodes. The research shows that the model can complete the dynamic calculation and real-time warning of the pressure safety state monitoring of the municipal water supply network through the acquisition, processing and feedback of the pressure of the municipal water supply network, realize the pressure safety state monitoring of the municipal water supply network, and improve the dynamic information safety management level of the municipal water supply network.

关键词： Water Safety management Attenuation Feature extraction Data processing Data models Monitoring

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Measuring the Orbital-Angular-Momentum Complex Spectrum of Light with the Fast Fourier Transform

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Physical Review Applied 2023年第1期20卷 014010-014010页

作者： Jialong Zhu Yihua Wu Le Wang Hailong Zhou Shengmei Zhao Institute of Signal Processing and Transmission Nanjing University of Posts and Telecommunications (NUPT) Nanjing 210003 China School of Information Engineering Suqian University Suqian 223800 China Wuhan National Laboratory for Optoelectronics School of Optical and Electronic Information Huazhong University of Science and Technology Wuhan 430074 China Key Lab of Broadband Wireless Communication and Sensor Network Technology (Nanjing University of Posts and Telecommunications) Ministry of Education Nanjing China National Laboratory of Solid State Microstructures Nanjing University Nanjing 210093 China

Measuring the orbital-angular-momentum (OAM) complex spectrum of light is very important in OAM-based applications. In this paper, we propose and experimentally demonstrate a simple scheme to measure the OAM complex spectrum of light with the fast Fourier transform (FFT). The light with input OAM modes coaxially interferes with a Gaussian light beam that is generated locally to achieve the intensity distribution of the interference. By subtracting the intensity distribution of the input OAM light from this interference intensity distribution, the OAM complex spectrum can be extracted by employing the FFT transform on the result of the subtraction. In addition, we also present an approach to enlarge the range of detectable OAM modes (from 1 to 50) and analyze the effects of optical alignment and the number of superimposed OAM modes on the measurement results. The proposed scheme is demonstrated in a proof-of-principle experiment, where six superimposed OAM modes can be measured without error, with their average deviation of amplitude and phase being 0.07 and 0.308, respectively. The proposed scheme can exploit applications in some advanced domains, including OAM sensing, OAM imaging, optical communication decoding, and various other OAM-based systems.

关键词： Angular momentum of light Metrology Spatial profiles of optical beams Optical sources & detectors Optical spectroscopy

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Sequential 3→1 quantum random access code utilizing unsharp measurements

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Chinese Optics Letters 2021年第11期19卷 133-137页

作者： Zhiguang Pang Jiang Gao Tianlei Hou Min Wei Jian Li Qin Wang Institute of Quantum Information and Technology Nanjing University of Posts and Telecommunications(NUPT)Nanjing 210003China Key Laboratory of Broadband Wireless Communication and Sensor Network Technology of Ministry of Education NUPTNanjing 210003China Telecommunication and Networks National Engineering Research Center NUPTNanjing 210003China

Quantum random access codes(QRACs) are important communication tasks that are usually implemented in prepare-andmeasure scenarios. The receiver tries to retrieve one arbitrarily chosen bit of the original bit-string from the code qubit sent by the sender. In this Letter, we analyze in detail the sequential version of the 3 → 1 QRAC with two receivers. The average successful probability for the strategy of unsharp measurement is derived. The prepare-and-measure strategy within projective measurement is also discussed. It is found that sequential 3 → 1 QRAC with weak measurement cannot be always superior to the one with projective measurement, as the 2 → 1 version can be.

关键词： quantum random access codes unsharp measurement prepare-and-measure scenario

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Optimization on Cooperative communications Based on network Coding in Multi-hop wireless networks 16

Optimization on Cooperative Communications Based on Network ...

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16th IEEE International wireless communications and Mobile Computing Conference, IWCMC 2020

作者： Bu, Xiande Liu, Chuan Yu, Qiang Yin, Lei Tian, Feng State Grid Laboratory of Electric Power Communication Network Global Energy Interconnection Research Institute Nanjing210003 China Key Lab of Broadband Wireless Communication and Sensor Network Technology Nanjing Universityof Posts and Telecommunications Ministry of Education Nanjing210003 China

ISBN: (纸本)9781728131290

Cooperative communications (CC) based on network coding (NC) can significantly increase the capacity of wireless networks. In this paper, we investigate how to apply NC in multi-hop wireless networks with multiple relay nodes and multiple sessions to achieve more practical and general CC based on NC. Based on NC, we consider to jointly optimize relay node selecting, scheduling and flow routing in CC in a multi-hop wireless network. We not only construct a mathematical model but also formulate a maximum-minimum (Max-Min) optimization problem for it. Then we reformulate and solve it with CPLEX. Through simulation, we validate that the achieved rate gain by NC can be greatly improved than the one by CC. © 2020 IEEE.

关键词： Cooperative communication

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Trust Evaluation Algorithm based on Association Rule Extraction

Trust Evaluation Algorithm based on Association Rule Extract...

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Cryptography, Security and Privacy (CSP), IEEE International Conference on

作者： Yanchun Cui Kai Zhong Ansheng Yin School of Artificial Intelligence Nanjing Vocational College of Information Technology Nanjing China Key Lab of Broadband Wireless Communication and Sensor Network Technology Nanjing University of Posts and Telecommunications Nanjing China

ISBN: (数字)9781728186214

ISBN: (纸本)9781728186221

The current trust network evaluation models are mainly based on nodes' behavior, multi-attribute decision-making method or nodes' reputation. Due to the ambiguity and roughness of trust, these methods cannot express the trust of nodes well. Rule set matching algorithm can effectively deal with the ambiguity and roughness of trust. As the scale of the network expands and time increases, the scale of the trusted rule set will continue to grow, and at the same time, some of the rules collected may be invalid or even wrong. This paper proposes a rule extraction algorithm based on inclusion to improve the effectiveness and accuracy of rule set matching. Experimental results show that the algorithm is effective.

关键词： Privacy Conferences Decision making Cryptography

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Cross-modal communication technology: A survey

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Fundamental Research 2024年

作者： Wei, Xin Wu, Dan Zhou, Liang Guizani, Mohsen School of Communications and Information Engineering Nanjing University of Posts and Telecommunications Nanjing 210003 China Key Lab of Broadband Wireless Communication and Sensor Network Technology Ministry of Education Nanjing 210003 China College of Communications Engineering Army Engineering University of PLA Nanjing 210007 China Machine Learning Department Mohamed Bin Zayed University of Artificial Intelligence Abu Dhabi 999041 United Arab Emirates

In the 5G era and beyond, multi-modal services that integrate audio, visual, and haptic signals are expected to become dominant applications. To support multi-modal services, the concept of cross-modal communications, which involves collaborative audio-visual and haptic interactions, has emerged. Despite significant research about cross-modal communication technology being conducted, a comprehensive literature review on this topic is lacking. To fill this gap, this paper presents a detailed survey on cross-modal communication technology. First, it provides a highly summarized description of representative research attempts in audio-visual and haptic communications, which serve as the foundation for cross-modal communications. Then, it delves into various aspects of cross-modal communications, including architectural, cross-modal coding, cross-modal transmission, cross-modal signal reconstruction, the essence of semantics, and prototype systems. Finally, it discusses conclusions and future research directions. This paper is expected to promote the theoretical research and practical applications of cross-modal communications. © 2023

关键词： Audio-visual Cross-modal communications Haptic Multi-modal service Semantics

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Micronucleus Image Recognition Based on Feature-map Spatial Transformation 11

Micronucleus Image Recognition Based on Feature-map Spatial ...

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2019第十一届数字图像处理国际会议

作者： Yujie Xu Jiwei Hu Quan Liu Jiamei Deng School of Information Engineering Wuhan University of Technology & Key Lab.of Broadband Wireless Communication and Sensor Network

ISBN: (数字)9781510630765

ISBN: (纸本)9781510630758

Convolutional neural networks in deep learning models have dominated the recent image recognition *** the lack of capacity to maintain spatial invariance makes identification of micronucleus cells as a classic task in digital pathology still a challenge *** this paper,a novel convolutional neural network for feature maps spatial transformation(FSTCNN) is proposed,which incorporates a Spatial Transformer *** model allows the spatial manipulation of data within the network,provides the ability of active spatial transformation for neural network without any extra *** compared the results of inserting STN into different convolutional layers and found that such a network can transform the input image more steadily,correct the image to one certain position,make it fill the whole screen to create a better environment for image *** results show a distinct advantage over other convolutional neural networks for medical image recognition.

关键词： Spatial transformer micronucleus cells feature extraction image recognition

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Reference-Frame-Independent Measurement-Device-Independent Quantum key Distribution Over 200 km of Optical Fiber

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Physical Review Applied 2021年第6期15卷 064016-064016页

作者： Xing-Yu Zhou Hua-Jian Ding Ming-Shuo Sun Si-Hao Zhang Jing-Yang Liu Chun-Hui Zhang Jian Li Qin Wang Institute of Quantum Information and Technology Nanjing University of Posts and Telecommunications Nanjing 210003 China Broadband Wireless Communication and Sensor Network Technology Key Lab of Ministry of Education NUPT Nanjing 210003 China Telecommunication and Networks National Engineering Research Center NUPT Nanjing 210003 China

Reference-frame-independent (RFI) measurement-device-independent (MDI) quantum key distribution (QKD) is immune to all detector side-channel attacks and is insensitive to slow drifts of reference frames; thus, it is a promising candidate for the realization of long-distance quantum secure communications. However, its practical performance is predominantly limited by the finite-data-size effect compared with standard MDI QKD. By combining the collective constraint and joint-study strategy with our parameter estimation processes for the RFI-MDI-QKD protocol, we reduce the influence of the finite-data-size effect and substantially improve the protocol’s performance under realistic experimental conditions. Furthermore, a proof-of-principle experimental demonstration is conducted, and a transmission distance of up to 200 km is achieved. Therefore, this study represents a further step toward long-distance quantum secure communications.

关键词： Optical quantum information processing Quantum communication Quantum cryptography Quantum protocols Optical fibers Technological networks

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SiamIRPN: Siamese Visual Tracking with Improved Region Proposal networks

SiamIRPN: Siamese Visual Tracking with Improved Region Propo...

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2023 International Conference on Frontiers of Robotics and Software Engineering, FRSE 2023

作者： Cao, Dun Dai, Renhua Zhao, Tianyu Alqahtani, Fayez Tolba, Amr Sherratt, R. Simon Zhu, Min Changsha University of Science and Technology School of Computer and Communications Engineering Hunan Changsha China Nanjing University of Posts and Telecommunications Ministry of Education Key Lab of Broadcast Wireless Communication and Sensor Network Technology China King Saud University College of Computer and Information Sciences Software Engineering Department Riyadh12372 Saudi Arabia King Saud University Community College Computer Science Department Riyadh11437 Saudi Arabia The University of Reading School of Biomedical Engineering RG6 6AY United Kingdom Zhejiang Shuren University College of Information Science and Technology Zhejiang31000 China

ISBN: (纸本)9798350301113

Though introducing the Region Proposal network (RPN) from object detection enabled Siamese trackers' success, RPN-based trackers still struggle in challenging scenarios. We posit that the reason comes from two major limitations of the introduced RPN, where one is that the external structure of the RPN is simple and straight, the other is that the internal components used in RPN cannot cope with complex scenes. In this paper, we propose an Improved RPN (IRPN) suitable for visual tracking. Externally, we place a Convolutional Block Attention Mechanism (CBAM) to the IRPN, and internally, we adopt the advanced component groups for the IPRN. Using multiple IRPN blocks and deep architecture, we propose a Siamese tracker (SiamIRPN) having a layer-wise structure. Comprehensive experiments and ablation studies on five benchmarks (VOT-2019, OTB100, UAV123, GOT-10k, and NFS) show our proposed SiamIRPN achieves competitive performance. © 2023 IEEE.

关键词： Object detection

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Synergizing Internal Electric Field and Ferroelectric Polarization of Bifeo3/Znin2s4 Z-Scheme Heterojunction for Photocatalytic Overall Water Splitting

SSRN

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SSRN 2022年

作者： Zhang, Jian Zhang, Ying Li, Lutao Yan, Wei Wang, Haiyun Cui, Yan Li, Yonghua Zhu, Xinbao Nanjing210023 China Jiangsu Nanjing210023 China Key Laboratory of Broadband Wireless Communication and Sensor Network Technology Ministry of Education Nanjing University of Posts and Telecommunications Nanjing210003 China College of Chemical Engineering Nanjing Forestry University Nanjing210037 China

Coupling internal electric field and ferroelectric polarization through the modulation of surface electronic structures to achieve high carrier separation and migration efficiency is attractive, but challenging in solar-to-chemical energy conversion. Herein, we report that coating the band gap well matched ZnIn2S4 nanoflakes on BiFeO3 polyhedron microparticles constructs the ferroelectric polarization and internal electric field enhanced Z-scheme heterojunction photocatalyst (BiFeO3 /ZnIn2S4). Benefit from the efficient photon-generated carrier separation and migration processes which triggered by enhanced spontaneous polarization and powerful internal electric field, respectively, the nanocomposites exhibit the firm half-reaction performance over hydrogen and oxygen evolution. More significantly, the optimal nanohybrids photocatalyst (ZB-3) delivered a superior photocatalytic overall water splitting activity (H2 : 87.3 μmol g-1 h-1, O 2 : 42.3 μmol g-1 h-1) with an apparent quantum efficiency of 1.12 % at 420 nm in pure water under visible light irradiation, the highest activity reported so far for ferroelectric-based heterojunction photocatalysts. The novel strategy of synergizing internal electric field and ferroelectric polarization by hybridization is proposed to boost separation and transfer efficiency of photogenerated charges in ferroelectric semiconductors. © 2022, The Authors. All rights reserved.

关键词： Heterojunctions

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