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Variance-Constrained Filtering Fusion for Nonlinear Cyber-Physical systems With the Denial-of-Service Attacks and Stochastic Communication Protocol

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IEEE/CAA Journal of Automatica Sinica 2022年第6期9卷 978-989页

作者： Hang Geng Zidong Wang Yun Chen Xiaojian Yi Yuhua Cheng IEEE School of Automation Engineering University of Electronic Science and Technology of ChinaChengdu 611731China College of Electrical Engineering and Automation Shandong University of Science and TechnologyQingdao 266590China Department of Computer Science Brunel University LondonUxbridgeMiddlesexUB83PHUnited Kingdom Key Laboratory for IoT and Information Fusion Technology of Zhejiang School of AutomationHangzhou Dianzi UniversityHangzhou 310018China School of Mechatronical Engineering Beijing Institute of TechnologyBeijing 100081China

In this paper,a new filtering fusion problem is studied for nonlinear cyber-physical systems under errorvariance constraints and denial-of-service *** prevent data collision and reduce communication cost,the stochastic communication protocol is adopted in the sensor-to-filter channels to regulate the transmission order of *** sensor is allowed to enter the network according to the transmission priority decided by a set of independent and identicallydistributed random *** the defenders’view,the occurrence of the denial-of-service attack is governed by the randomly Bernoulli-distributed *** the local filtering stage,a set of variance-constrained local filters are designed where the upper bounds(on the filtering error covariances)are first acquired and later minimized by appropriately designing filter *** the fusion stage,all local estimates and error covariances are combined to develop a variance-constrained fusion estimator under the federated fusion ***,the performance of the fusion estimator is examined by studying the boundedness of the fused error covariance.A simulation example is finally presented to demonstrate the effectiveness of the proposed fusion estimator.

关键词： Cyber-physical system(CPS) denial-of-service attack stochastic communication protocol(SCP) variance-constrained filtering fusion

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The Bright Single Pulse Emission from PSR B1133+16

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Research in Astronomy and Astrophysics 2024年第4期24卷 253-261页

作者： Jun Tan Zhi-Gang Wen Zhen Wang Xue-Feng Duan Hong-Guang Wang Na Wang Vishal Gajjar Jian-Ping Yuan Rai Yuen Wen-Ming Yan Jian-Ling Chen Wei Han Hui Wang Cheng-Bing Lyu Ai-Jun Dong Maths and Information Technology School Yuncheng UniversityYuncheng 044000China Xinjiang Astronomical Observatory Chinese Academy of SciencesUrumqi 830011China Xinjiang Key Laboratory of Radio Astrophysics Urumqi 830011China School of Physics and Materials Science Guangzhou UniversityGuangzhou 510006China Space Science Laboratory University of CaliforniaBerkeley 94710USA Department of Physics and Electronic Engineering Yuncheng UniversityYuncheng 044000China School of Physics and Electronic Science Guizhou Normal UniversityGuiyang 550025China

We have conducted a comprehensive investigation into the bright single pulse emission from PSR B1133+16using the Giant Metrewave Radio *** time resolution data(61μs)were obtained at a center frequency of 322 MHz with a bandwidth of 32 MHz over a continuous observation period of 7.45 hr.A total of 1082 bright pulses were sporadically detected with peak flux densities ranging from 10 to 23 times stronger than the average pulse ***,no giant pulse-like emission with a relative pulse energy larger than 10 and extremely short duration was detected,indicating that these bright pulses cannot be categorized as giant pulse *** majority of these bright pulses are concentrated in pulse phases at both the leading and trailing windows of the average pulse profile,with an occurrence ratio of approximately *** pulse energy distribution for all individual pulses can be described by a combination of two Gaussian components and a cutoff power-law with an index of α=-*** updated nulling fraction of 15.35%±0.45% was determined from the energy *** emission of individual pulses follows a log-normal distribution in peak flux density *** is imperative that regular phase drifting in bright pulse sequence is identified in both the leading and trailing components for the first *** physical mechanisms are discussed in detail to provide insights into these observations.

关键词： (stars:)pulsars:general (stars:)pulsars:individual(PSR B1133+16) methods:observational methods:data analysis

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High Sensitivity and Wide Linear Range All-Fabric Piezoresistive Pressure Sensor for Feet Motion Monitoring

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IEEE Sensors Journal 2025年第11期25卷 18909-18917页

作者： Duan, Wenfeng Feng, Jiyong Lin, Weixin Liu, Xuebin Huang, Junhua Wang, Yunfan Fu, Zhengwei Li, Xinming Su, Yiming Gui, Xuchun Sun Yat-sen University State Key Laboratory of Optoelectronic Materials and Technologies School of Electronics and Information Technology Guangdong Guangzhou510275 China South China Normal University School of Optoelectronic Science and Engineering Guangzhou510006 China Beijing Zhenxing Institute of Metrology and Measurement Beijing100074 China

With the growing interest in human health and wearable smart electronics, all-fabric flexible pressure sensors have gained significant attention for their potential application in motion monitoring and intelligent healthcare systems. However, achieving a wide detection range while maintaining high sensitivity and linearity remains a challenge. Here, a graphene-based all-fabric pressure sensor was designed and fabricated, which uses a silicone adhesive dot array as the isolation layer. The silicone adhesive dot array was sandwiched between the Ag interdigital electrodes and the graphene-based sensitive layer to form a sandwich structure and realize the self-encapsulation of the sensor. Moreover, the silicone adhesive dot array reduced the contact area between the sensitive layer and the interdigital electrodes, decreasing the initial current of the sensor and thus significantly improving the sensitivity and detection range of the sensor. The pressure sensor exhibits a wide detection range of 100 Pa-140 kPa, a high sensitivity of 23.05 kPa-1, and an exceptional linearity (R2 = 0.94) in detection range. Moreover, the sensor exhibits a robust durability over 5000 cycles, and a fast response time of 17 ms during pressure loading. The constructed sensor holds great promise for deployment in real-time monitoring of pressure responses, making it suitable for applications such as wearable electronics, feet motion monitoring, and biomedical diagnostics. © 2025 IEEE.

关键词： Silicones

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Ultrastable Viologen Ionic Liquids-Based Ionogels for Visible Strain Sensor Integrated with Electrochromism,Electrofluorochromism,and Strain Sensing

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CCS Chemistry 2023年第8期5卷 1917-1930页

作者： Yueyan Zhang Mengying Guo Guoping Li Xiaoliang Chen Zishun Liu Jinyou Shao YongAn Huang Gang He Frontier Institute of Science and Technology Xi’an Jiaotong UniversityXi’an 710054 Micro-/Nano-technology Research Center State Key Laboratory for Manufacturing Systems EngineeringXi’an Jiaotong UniversityXi’an 710054 International Center for Applied Mechanics State Key Laboratory for Strength and Vibration of Mechanical StructuresXi’an Jiaotong UniversityXi’an 710049 State Key Laboratory of Digital Manufacturing Equipment and Technology Huazhong University of Science and TechnologyWuhan 430074

Flexible electronics play a key role in the development of human society and our daily *** they are expected to revolutionize personal health ***,it remains challenging to fabricate smart sensors with high robustness,reliability,and visible ***,high-performance electrochromic(EC),electro-fluorochromic(EFC),and double-network ionogels with excellent transmissivity,high mechanical robustness,and ultrastable reversibility are prepared by combination of thienoviologen-containing ionic liquids with poly(ethyl acrylate)*** ionogels exhibit good mechanical properties(1000%stretchability and 3.2 kJ m^(−2) fracture energy).The ionogel-based EC devices have a significantly simplified device fabrication process as well as superior cycling stability in which 88%of the contract ratio is maintained at 88%at 500 cycles,even after being stored for 2 years under ambient atmosphere(relative humidity:30%∼40%,25°C).The conductivity of ionogels showed a fast and reproducible response to strain,and the conductivity decreased with increased *** virtue of the EC and EFC properties of the thienoviologen component,the EC and EFC efficiency decreased with the increased strain loaded on the ionogels,and almost no EC or EFC phenomena were observed when the strain was above 300%.This feasible strategy provides an opportunity for the development of visible strain sensors to monitor the body’s movements through color and fluorescence emission.

关键词： ionogels flexible electronics viologen electrochromism strain sensor

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Enhanced BERT with Graph and Topic information for Short Text Classification 35

Enhanced BERT with Graph and Topic Information for Short Tex...

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35th International Conference on Software engineering and Knowledge engineering, SEKE 2023

作者： Zhang, Tong Tang, Ailing Yan, Rong College of Computer Science Inner Mongolia University Inner Mongolia Key Laboratory of Mongolian Information Processing Technology National & Local Joint Engineering Research Center of Intelligent Information Processing Technology for Mongolian Hohhot010021 China

Short text classification is an important natural language processing task due to the prevalence of short text on the internet and social media platforms. In this paper, we propose a novel graph-based short text classification method named GBBM (Graph-BERT-BTM Model) that leverages the powerful representation ability of graph data to capture the structural features of short text. In this work, we incorporate topic information to enrich and expand the feature space for the short text and compare our proposed method on five publicly available short text datasets with five existing models. Experimental results indicate the superiority of our proposed method. © 2023 Knowledge systems Institute Graduate School. All rights reserved.

关键词： Graphic methods

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A Design and Comparative Investigation of Graded AlxGa1–xN EBL for W-B0.375Ga N/W-B0.45GaN Edge Emitting Laser Diode on AlN Substrate

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Chinese Journal of Electronics 2022年第4期31卷 683-689页

作者： NIASS Mussaab I. WANG Fang LIU Yuhuai National Center for International Joint Research of Electronic Materials and Systems International Joint-Laboratory of Electronic Materials and Systems of Henan Province School of Information EngineeringZhengzhou University Zhengzhou Way Do Electronics Co.Ltd. Research Institute of Industrial Technology Co.Ltd. Zhengzhou University Institute of Materials and Systems for Sustainability Nagoya University

In this paper, we numerically demonstrated the possibility of using wurtzite boron gallium nitride(W-BGa N) as active layers(quantum well and quantum barriers) along with aluminum gallium nitride(Al Ga N) to achieve lasing at a deep ultraviolet range at 263nm for edge emitting laser diode. The laser diode structure simulations were conducted by using the CrosslightLASTIP software with a self-consistency model for varies quantity calculations. Moreover, multiple designed structures such as full and half have been achieved as well as the study of the effect of grading engineering/techniques at the electron blocking layer for linearly-graded-down and linearly-graded-up grading techniques were also emphasized. As a result, a maximum emitted power of 26 W,a minimum threshold current of 308 m A, a slope efficiency of 2.82 W/A, and a minimum p-type resistivity of0.228 Ω·cm from the different doping concentrations and geometrical distances were thoroughly observed and jotted down.

关键词： Edge emitting laser diodes (EELD) Semiconducting aluminum compounds Heterojunction semiconductor devices Quantum wells

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A nano-scale design of a multiply-accumulate unit for digital signal processing based on quantum computing

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Optical and Quantum Electronics 2024年第1期56卷 1-25页

作者： Ahmadpour, Seyed-Sajad Navimipour, Nima Jafari Yalcin, Senay Bakhshayeshi Avval, Danial Ain, Noor Ul Department of Computer Engineering Faculty of Engineering and Natural Sciences Kadir Has University Istanbul Turkey Future Technology Research Center National Yunlin University of Science and Technology Douliou 64002 Taiwan Department of Computer Engineering Nisantasi University Istanbul Turkey Department of Information Systems Engineering Sakarya University Sakarya Turkey Department of Business Administration Kadir Has University Istanbul Turkey

Digital signal processing (DSP) is used in computer processing to conduct different signal-processing tasks. The DSPs are used in the series numbers representing a continuous variable in a domain such as time, area, or frequency. The multiply-accumulate (MAC) unit is crucial in various DSP applications, including convolution, discrete cosine transform (DCT), Fourier Transform, etc. Thus, all DSPs contain a critical MAC unit in signal processing. The MAC unit conducts multiplication and accumulation operations for continuous and complicated DSP application processes. On the other hand, in the MAC structure, the stability of the circuit and the occupied area pose some significant challenges. However, high-performance quantum technology can easily overcome all the previous shortcomings. Hence, this paper suggests an efficient MAC for DSP applications using a Vedic multiplier, half adder, and accumulator based on quantum technology. All the proposed structures have used a single-layer layout without rotated cells. The suggested architecture is designed and validated based on the QCADesigner 2.0.3 tool. The findings revealed that all the developed circuits have a simple architecture with fewer quantum cells, optimal area, and low latency. © 2023, The Author(s), under exclusive licence to Springer science+Business Media, LLC, part of Springer Nature.

关键词： Multiply-accumulate (MAC) Nano-design Quantum dot cellular automata (QCA) Signal processing

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5G Spectrum Learning-Based Passive UAV Detection in Urban Scenario

5G Spectrum Learning-Based Passive UAV Detection in Urban Sc...

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2023 IEEE/CIC International Conference on Communications in China, ICCC 2023

作者： Lin, Luning Yu, Ningning Wang, Yong Shi, Zhiguo Zhejiang University College of Information Science and Electronic Engineering Hangzhou310027 China Key Laboratory of Collaborative Sensing and Autonomous Unmanned Systems of Zhejiang Province Hangzhou310015 China

ISBN: (纸本)9798350345384

Unmanned aerial vehicles (UAVs) will play an increasingly important role in urban scenario, while the existing UAV detection technologies are inadequate to achieve full-time, large-scale, and passive UAV surveillance. To solve the problem, we propose a fifth-generation (5G) spectrum learning-based UAV detection method, which leverages the distinctive spectral disturbance features under various conditions of UAV presence. To be specific, the synchronization signal blocks (SSBs) are extracted from the captured 5G I/Q signals to reduce the impact of payload data and the flexible 5G frame structure. Then, the UAV detection task is framed as a multi-class classification task, employing a convolutional neural network (CNN) that utilizes the transformed SSBs and their corresponding labels. Experiment results with on-field data validate the effectiveness of the proposed method. © 2023 IEEE.

关键词： 5G mobile communication systems

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Versatile Magnetic Nanoparticles for Spatially Organized Assemblies of Enzyme Cascades:A Comprehensive Investigation of Catalytic Performance

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Chinese Journal of Chemistry 2022年第12期40卷 1437-1446页

作者： Xinshuang Chu Qinghong Shi Deportment of Biochemical Engineering School of Chemical Engineering and TechnologyTianjin UniversityTianjin 300350China Key Laboratory of Systems Bioengineering and Frontiers Science Center for Synthetic Biology(Ministry of Education) Tianjin UniversityTianjin 300350China

Inspired by nature,precise spatial organization of enzyme cascades of interest is crucial to the improvement of catalytic ***,DNA scaffolds were introduced to construct a toolkit for versatile immobilization of enzyme pairs on dextran-coated magnetic nanoparticles(MNPs).After the glucose oxidase(GOx)and horseradish peroxidase(HRP)pair was immobilized through random cova-lent,DNA-directed and DNA tile-directed strategies,the immobilized GOx/HRP pair on the MNP-based carrier assembled with DNA tile(TD@MNPs)exhibited the highest activity due to rational spatial organization and less conformational change of constituent *** a decrease in interenzyme distance on TD@MNPs,furthermore,the catalytic efficiency of the HRP/GOx pair increased further for both substrates,2,2'-azinobis(3-ethyl-benzthiazoline-6-sulfonate)(ABTS)and 3,3',5,5'-tetramethyl benzidine(TMB).As the assembled HRP was closer to the carrier surface,the catalytic efficiency of the GOx/HRP pair increased by 6.2-fold for positively charged TMB and only by 62%for negatively charged ABTS compared with the free GOx/HRP ***,a reversal of catalytic efficiency was found after the GOx/HRP pair was assembled on a positively charged carrier(TD@pMNPs).This research demonstrated that MNP-based car-riers had the potential to become a versatile toolkit for shedding an insight into catalytic performance and the development of new biocatalysts.

关键词： Enzymes Immobilization DNA structures Substrate transport Spatial organization

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Compact Aperture-Shared Triple-Band Antenna with Dielectric Resonator and Microstrip Patch Structures

Compact Aperture-Shared Triple-Band Antenna with Dielectric ...

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2024 IEEE International Conference on Computational Electromagnetics, ICCEM 2024

作者： Jiang, Ji Liu, Jian-Yan Deng, Hong-Wei Liao, Tong-Qing Zuo, Chang-Yu College of Electronic and Information Engineering Nanjing University of Aeronautics and Astronautics Nanjing210016 China Science and Technology On Space Physics Laboratory Beijing China Anhui Qingyu Photoelectric Technology Co. Ltd Hefei230061 China

ISBN: (纸本)9798350383317

In this paper, a compact aperture-shared dielectric resonator antenna (DRA) is designed, which has two microstrip patch antennas (MPA) operating in different bands, loaded with U-slot to widen the impedance bandwidth. The DRA consists of a rectangular dielectric rectangular ceramic, where there exists a square part below for support and a pair of strip metal foil, added to the bottom of the rectangular dielectric to act as feeding part, just like a dipole. Then, a pair of MPAs is integrated above the ground of DRA, just below the rectangular part of DRA. The DRA occupies 3.28-4.11 GHz, about 28.2% at the center frequency, while the MPA working at 4.62-4.85 GHz and 5.08-5.40 GHz, respectively. © 2024 IEEE.

关键词： Microwave antennas

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