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2024 International Symposium on Silicon-based Optoelectronics, ISSBO 2024

作者： Huang, Shiyuan Hou, Jin Qu, Yu Long, Hao Yang, Chunyong Chen, Shaoping Hubei Key Laboratory of Intelligent Wireless Communications Hubei Engineering Research Center of Intelligent Internet of Things Technology College of Electronic and Information Engineering South-Central Minzu University Hubei Wuhan430074 China

ISBN: (数字)9781510687608

ISBN: (纸本)9781510687592

Broadband-efficient grating couplers serve as the key bridge connecting fiber and the chip in silicon photonics. Apodized grating couplers (AGC) have already demonstrated with high coupling efficiency, but almost all of them have been designed by only considering of mode matching coupling at single-wavelength, which resulting in a limited coupling bandwidth. Here, a multi-wavelengths mode matching method by calculating the root mean square error of effective-index and leakage-factor is proposed to design AGCs with both an enhancement bandwidth and a high coupling efficiency. Our investigation shows that, compared with the conventional single-wavelength SOI AGC, in an optimized multi-wavelengths AGC, the 3 dB bandwidth could be extended from 60 nm to 88 nm and the coupling efficiency could be enhanced from 67 % to 74 %. Moreover, when a metal reflector at the bottom of the AGC was furtherly adopted, both the 3 dB bandwidth and the coupling efficiency could be enhanced to an even more higher value of 92 nm and 91 % in an optimized multi-wavelengths AGC. These results would provide a new pathway to achieve broadband grating couplers by considering of multi-wavelengths mode matching. © 2025 SPIE.

关键词： Silicon photonics

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Associations of occupation categories with cardiovascular diseases and all-cause mortality: an analysis of NHANES 2005-2014

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BMC Public Health 2025年第1期25卷 1-10页

作者： Chi, Haiyang Zhou, Jia Li, Chao Lu, Yuhuan Xie, Can He, Baoyu Ke, Wei School of Applied Sciences Macao Polytechnic University 999078 Macao Engineering Research Centre of Applied Technology on Machine Translation and Artificial Intelligence Ministry of Education Macao Polytechnic University 999078 Macao Chongqing Yubei Maternal and Child Health Hospital Chongqing 40120 China Guang Ming District Center for Disease Control and Prevention Guangdong Province Shenzhen 518106 China The State Key Laboratory of Internet of Things for Smart City Department of Computer and Information Science University of Macau 999078 Macao

Background: Evidence on the effects of occupation categories on cardiovascular disease (CVD) progression and longevity has mostly come from cross-sectional studies, which limits our understanding of the pathogenesis of CVD. This study aimed to evaluate the associations of occupation categories with CVD and all-cause mortality in the American population. Methods: We analyzed data from the 2005–2014 U.S. National Health and Nutrition Examination Survey (NHANES), a large-scale public health survey representative of the U.S. population, linked to mortality data obtained in 2019. To evaluate the association between occupation categories and the risks of cardiovascular disease (CVD) and all-cause mortality, we estimated Cox proportional hazard ratios (HRs) with 95% confidence intervals (CIs). Results: Among 11,102 participants (aged 20–85 years, 53.99% male), 132 died from CVD among the total 478 deaths during a median follow-up of 9.9 years. In multivariable-adjusted models, the occupation categories were significantly associated with CVD mortality, with the hazard ratios (HRs) and 95% confidence intervals (95% CIs) of 3.95(1.94–8.04) for construction and clean-up industry, 2.51(1.15–5.52) for sales and service industry, 2.49(1.04–5.95) for business and management, and 2.98(1.56,5.71) for others. For all-cause mortality, only construction and clean-up industry and sales and service industry were positively associated with all-cause mortality, and HRs (95% CIs) were 2.05(1.33–3.16) and 1.64(1.12–2.41). Both working hours in the previous week and the number of months worked exhibited varying degrees of dose-response relationships with CVD and all-cause mortality. Conclusions: Occupation categories were found to be significantly associated with the risk of CVD and all-cause mortality. Future research could incorporate different work properties into specific prevention strategies for these outcomes. © The Author(s) 2025.

关键词： All-cause mortality Cardiovascular mortality Cohort study Occupation categories

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Prescribed Performance Practical Fixed-Time Consensus control for Multiagent Systems With Input Saturation

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IEEE Transactions on Systems, Man, and Cybernetics: Systems 2025年

作者： Yao, Dajie Xie, Xiangpeng The Brittle Material Products Intelligent Manufacturing Technology Engineering Research Center Chizhou University Chizhou247000 China The Advanced Technology for Carbon Neutrality Nanjing University of Posts and Telecommunications Nanjing210023 China The School of Internet of Things Nanjing University of Posts and Telecommunications Nanjing210023 China

This study focuses on the prescribed performance practical fixed-time control problem for nonlinear uncertain multiagent systems with input saturation and external disturbances. Unlike existing practical fixed-time consensus approaches, we propose an adaptive dynamic surface design scheme to mitigate computational complexity in the backstepping procedure. In addition, fuzzy logic systems are adopted to approximate uncertainties. To reduce the frequency of controller updates, an event-triggering mechanism is introduced. Using the backstepping technique and Lyapunov stability theory, we design a real adaptive distributed fuzzy controller that can guarantee consensus errors remain within prescribed performance in a fixed time. Ultimately, emulate results express the effectiveness of the presented strategy. © 2013 IEEE. All rights reserved.

关键词： Adaptive control systems

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Improved beluga whale optimization algorithm based cluster routing in wireless sensor networks

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Mathematical Biosciences and engineering 2024年第3期21卷 4587-4625页

作者： Yuan, Hao Chen, Qiang Li, Hongbing Zeng, Die Wu, Tianwen Wang, Yuning Zhang, Wei Chongqing Key Laboratory of Geological Environmental Monitoring and Disaster Early Warning in the Three Gorges Reservoir Area Chongqing Three Gorges University Chongqing404120 China Internet of Things and Intelligent Control Technology Chongqing Engineering Research Center Chongqing Three Gorges University Chongqing404120 China Chongqing Municipal Key Laboratory of Intelligent Information Processing and Control Chongqing Three Gorges University Chongqing404120 China

Cluster routing is a critical routing approach in wireless sensor networks (WSNs). However, the uneven distribution of selected cluster head nodes and impractical data transmission paths can result in uneven depletion of network energy. For this purpose, we introduce a new routing strategy for clustered wireless sensor networks that utilizes an improved beluga whale optimization algorithm, called tCBWO-DPR. In the selection process of cluster heads, we introduce a new excitation function to evaluate and select more suitable candidate cluster heads by establishing the correlation between the energy of node and the positional relationship of nodes. In addition, the beluga whale optimization (BWO) algorithm has been improved by incorporating the cosine factor and t-distribution to enhance its local and global search capabilities, as well as to improve its convergence speed and ability. For the data transmission path, we use Prim’s algorithm to construct a spanning tree and introduce DPR for determining the optimal route between cluster heads based on the correlation distances of cluster heads. This effectively shortens the data transmission path and enhances network stability. Simulation results show that the improved beluga whale optimization based algorithm can effectively improve the survival cycle and reduce the average energy consumption of the network. © 2024 the Author(s).

关键词： Heuristic algorithms

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Chemically bonded flexible pressure sensor based on divergent metallic grid with high linearity, low hysteresis, and excellent stability

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Sensors and Actuators A: Physical 2025年 392卷

作者： Luo, Guoxi Zhang, Bingcheng Pi, Diying Li, Min Yang, Ping Zhao, Libo Shandong Laboratory of Advanced Materials and Green Manufacturing at Yantai Yantai265503 China School of Instrument Science and Technology Xi'an Jiaotong University Xi'an710049 China School of Mechanical Engineering Xi'an Jiaotong University Xi'an710049 China Chongqing Key Laboratory of Micro-Nano Systems and Intelligent Sensing Chongqing Academician Workstation Chongqing 2011 Collaborative Innovation Center of Micro/Nano Sensing and Intelligent Ecological Internet of Things Chongqing Technology and Business University Chongqing400067 China

As intelligent robots and smart wearable electronics become commonplace, the demand for flexible pressure sensors is increasing rapidly. Despite the enormous effort in the development of flexible pressure sensor with high sensitivity, limited progress has been made in terms of developing a flexible pressure sensor with high linearity, low hysteresis, and high stability to avoid additional signal processing and signal distortion, and meanwhile promise good accuracy. Herein, we developed a flexible pressure sensor on foundation of the metallic strain effect. The divergent metallic grid was manufactured on polymide (PI) film with the mature magnetron sputtering and lift-off method, and a novel chemical bonding between PI and outer covering polydimethylsiloxane (PDMS) was developed for a flexible encapsulation. Benefiting from the excellent intrinsic properties of rigid sensitive materials and high-strength bonding. The as-fabricated pressure sensors exhibited several superior properties that are characterized by high linearity (linear regression coefficient of R2 = 0.991) in whole sensing range (0–620 kPa), low hysteresis (2.78 %), rapid response/relaxation time (ca. 29/21 ms), remarkable durability (over 13,000 bending and stretching cycles), and excellent stability. The integrated merits of this novel pressure sensor were demonstrated in applications including human physiological signal monitoring, material identification, and pressure space mapping. © 2025 Elsevier B.V.

关键词： Bond strength (chemical)

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Cluster routing algorithm based on agglomerative hierarchical clustering in wireless sensor networks

Cluster routing algorithm based on agglomerative hierarchica...

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2023 International Conference on intelligent Systems, Communications, and Computer Networks, ISCCN 2023

作者： Li, Hongbing Cui, Hao Ou, Jun Wang, Yuning Key Laboratory of Intelligent Information Processing Control of Chongqing Three Gorges University China Chongqing Key Laboratory of Geological Environment Monitoring Disaster Early Warning in Three Gorges Reservoir Area China Internet of Things and Intelligent Control Technology Chongqing Engineering Research Center China

ISBN: (纸本)9781510666238

To save the energy and extend the lifetime of the network, Cluster Routing Algorithm based on Agglomerative Hierarchical Clustering (CRAAHC) is proposed in wireless sensor networks. WSN is divided into a certain quantity of ring areas based on the energy consumption model. Clustering process is optimized by constraining the distance between clusters and the diameter of clusters to improve the quality of clustering algorithm. Cluster head selection strategy is improved by considering the residual energy of the node and energy consumption in communication with other nodes in one cluster. Simulation results show that CRAAHC algorithm can achieve energy efficiency and routing reliability. © 2023 SPIE.

关键词： Clustering algorithms

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Digital Device Modeling Based on Software Definition

Digital Device Modeling Based on Software Definition

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2023 International Conference on Electronic Materials and Information engineering, EMIE 2023

作者： Du, Xuefei Guo, Jun Dang, Jiao Liu, Zhi School of Electronics and Internet of Things Chongqing College of Electronic Engineering Chongqing China Chongqing Siou Intelligent Technology Research Institute Co. LTD Chongqing China

ISBN: (纸本)9781510671331

The manufacturing industry is complicated, with the coexistence of old and new devices, many devices, and various communication interfaces and protocols, making connectivity difficult. Therefore, based on the idea of software definition, the hardware and software of equipment are decoupled. The hardware layer only needs to do a good job of interconnection efficiently, and the calculation and control logic is completed by software. The digital device model consists of devices, controllers, data pumps, rules, events, and message flows. By defining, assembling, generating and enabling four steps, digital device driven assembly is realized. Finally, statistical analysis, processing and presentation of KPI data collected by digital equipment are carried out. The digital equipment modeling based on software definition realizes the integration of industrial heterogeneous networks, reduces the dependence on hardware, improves the efficiency, and has been applied in engineering and verified, and achieved good results. © 2023 SPIE · 0277-786X ·

关键词： Digital devices

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An efficient secure multichannel traffic management scheme in 2.4 GHz home automation network with IoT functions

An efficient secure multichannel traffic management scheme i...

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International Conference on Machine Tool technology and Mechatronics engineering, ICMTTME 2014

作者： Wei, Min Wang, Ping Key Lab. of Industrial IoT and Networked Control Chongqing University of Posts and Telecommunications Ministry of Education Chongqing China Chongqing Internet of Things Engineering Technology Research Center Chongqing China

ISBN: (纸本)9783038352464

A home automation system integrates electrical devices in a house with each other. In this paper, an efficient secure multichannel traffic management scheme for wireless home automation networks with IoT (internet of things) functions is proposed. The mechanism includes a channel resource optimization scheme by the centralized channel assignment algorithms and an intrusion detection scheme for security enhancement with the traffic management. We evaluated the performance of the mechanism by using the wireless data measured on real wireless home networks. The simulation results show that the scheme can effectively manage the multi-channel status of the networks and detect the intrusion attacks, which improve the overall network performance. © (2014), Trans Tech Publications, Switzerland.

关键词： Home networks

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Nonlinear Active Disturbance Rejection control for Vehicle Active Suspension System 3

Nonlinear Active Disturbance Rejection Control for Vehicle A...

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3rd International Conference on Electronic Information engineering and Computer Science, EIECS 2023

作者： Dai, Xianglian Zhao, Chunzhe Xu, Rong Chongqing Three Gorges University School of Electronics and Information Engineering Wanzhou China Chongqing Three Gorges University Chongqing Engineering Research Center of Internet of Things and Intelligent Control Technology Key Lab. of Intelligent Info. Proc. and Contr. of Chongqing Munic. Institutions of Higher Education Wanzhou China

ISBN: (纸本)9798350316674

Nonlinear active disturbance rejection control (ADRC) is designed for the suspension system of the quarter vehicle model with the two-degree freedom. It is compared with other active suspension systems based on PID and linear ADRC scheme. The variance of the errors reveals that the nonlinear ADRC suspension system promotes the vehicle acceleration, the suspension dynamic disturbance, and wheel dynamic load. © 2023 IEEE.

关键词： active disturbance rejection control active suspension system extended state observe tracking differentiator

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Tracking performance limitations of MIMO discrete-time networked control systems with multiple constraints

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Science China(Information Sciences) 2023年第8期66卷 267-268页

作者： Xiaowei JIANG Bin ZHANG Xiangyong CHEN Huaicheng YAN School of Automation China University of Geosciences Key Laboratory of Industrial Internet of Things & Networked Control Ministry of Education Hubei Key Laboratory of Advanced Control and Intelligent Automation for Complex Systems Engineering Research Center of Intelligent Technology for Geo-Exploration Ministry of Education School of Automation and Electrical Engineering Linyi University Key Laboratory of Smart Manufacturing in Energy Chemical Process of the Ministry of Education

Dear editor,Networked control systems(NCSs) have attracted widespread attention in some fields because they offer the advantages of reduced cabling, greater resource sharing,and ease of installation and maintenance [1]. However, in an unreliable network environment, network constraints can significantly limit the performance of NCSs.

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