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Physical Activity,Sedentary Behavior,and the Risk of Cardiovascular Disease in Type 2 Diabetes Mellitus Patients:The MIDiab Study

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engineering 2023年第1期20卷 26-35页

作者： Yafei Wu Guijun Qin Guixia Wang Libin Liu Bing Chen Qingbo Guan Zhongshang Yuan Xu Hou Ling Gao Chao Xu Haiqing Zhang Xu Zhang Qiu Li Yongfeng Song Fei Jing Shizhan Ma Shanshan Shao Meng Zhao Qingling Guo Nanwei Tong Hongyan Zhao Xiaomin Xie Chao Liu Zhongyan Shan Zhifeng Cheng Xuefeng Yu Shulin Chen Tao Yang Yangang Wang Dongmei Li Zhaoli Yan Lixin Guo Qiuhe Ji Wenjuan Wang Jiajun Zhao Department of Endocrinology&Shandong Clinical Research Center of Diabetes and Metabolic Diseases Shandong Provincial Hospital Affiliated to Shandong First Medical UniversityJinan 250021China Shandong Key Laboratory of Endocrinology and Lipid Metabolism&Shandong Prevention and Control Engineering Laboratory of Endocrine and Metabolic Diseases Shandong First Medical UniversityJinan 250021China Department of Endocrine and Metabolic Diseases The First Affiliated Hospital of Zhengzhou UniversityZhengzhou 450052China Department of Endocrinology and Metabolism First Hospital of Jilin UniversityChangchun 130021China Department of Endocrinology and Metabolism Fujian Medical University Union HospitalFuzhou 350001China Endocrinology Department The Southwest Hospital of AMUChongqing 400038China Department of Biostatistics School of Public HealthShandong UniversityJinan 250012China Department of Endocrinology and Metabolism West China Hospital of Sichuan UniversityChengdu 610041China Department of Endocrine and Metabolic Diseases Ruijin HospitalShanghai Jiao Tong University School of MedicineShanghai 200020China Department of Endocrinology The First People’s Hospital of YinchuanYinchuan 750001China Department of Endocrinology Nanjing Integrated Traditional Chinese and Western Medicine Hospital(the Affiliated Hospital of Nanjing University of Traditional Chinese Medicine)Nanjing 210046China Department of Endocrinology and Metabolism&Institute of Endocrinology the First Hospital of China Medical UniversityShenyang 110000China Department of Endocrinology the Fourth Affiliated Hospital of Harbin Medical UniversityHarbin 150001China Division of Endocrinology Department of Internal MedicineTongji HospitalTongji Medical College of Huazhong University of Science and TechnologyWuhan 430030China Department of Endocrinology Yantai Yuhuangding Hospital Affiliated to Qingdao University Medical CollegeYantai 264000China Department of Endocrinology the First Affiliated Hospital of Nanjing Medical University

The aim of this study was to explore the associations of moderate-to-vigorous-intensity physical activity(MVPA)time and sedentary(SED)time with a history of cardiovascular disease(CVD)and multifactorial(i.e.,blood pressure(BP),body mass index(BMI),low-density lipoprotein cholesterol(LDL-C),and glycated hemoglobin A1c(HbA1c))control status among type 2 diabetes mellitus(T2DM)patients in China.A cross-sectional analysis of 9152 people with type 2 diabetes from the Multifactorial Intervention on Type 2 Diabetes(MIDiab)study was *** were grouped according to their self-reported MVPA time(low,<150 min·week−1;moderate,150 to<450 min·week−1;high,≥450 min·week−1)and SED time(low,<4 h·d–1;moderate,4 to<8 h·d–1;high,≥8 h·d–1).Participants who self-reported a history of CVD were identified as having a CVD *** ratios(ORs)and 95%confidence intervals(CIs)of CVD risk and multifactorial control status associated with MVPA time and SED time were estimated using mixed-effect logistic regression models,adjusting for China’s geographical region *** participants had a mean±standard deviation(SD)age of(60.87±8.44)years,44.5%were women,and 25.1%had *** adjustment for potential confounding factors,an inverse association between high MVPA time and CVD risk that was independent of SED time was found,whereas this association was not observed in the moderate-MVPA group.A higher MVPA time was more likely to have a positive effect on the control of *** with the reference group(i.e.,those with MVPA time≥450 min·week−1 and SED time<4 h·d–1),CVD risk was higher in the low-MVPA group:The OR associated with an SED time<4 h·d–1 was 1.270(95%CI,1.040–1.553)and that associated with an SED time≥8 h·d–1 was 1.499(95%CI,1.149–1.955).We found that a high MVPA time(i.e.,≥450 min·week−1)was associated with lower odds of CVD risk regardless of SED time among patients with T2DM.

关键词： Type 2 diabetes Physical activity Sedentary time Car diovascular disease

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Bubble Planner: Planning High-speed Smooth Quadrotor Trajectories using Receding Corridors

arXiv

引用

arXiv 2022年

作者： Ren, Yunfan Zhu, Fangcheng Liu, Wenyi Wang, Zhepei Lin, Yi Gao, Fei Zhang, Fu The Department of Mechanical Engineering University of Hong Kong Hong Kong School of Electronics and Information Engineering Harbin Institute of Technology Shenzhen China The College of Control Science and Engineering Zhejiang University China Dji Co.

Quadrotors are agile platforms. With human experts, they can perform extremely high-speed flights in cluttered environments. However, fully autonomous flight at high speed remains a significant challenge. In this work, we propose a motion planning algorithm based on the corridor-constrained minimum control effort trajectory optimization (MINCO) framework. Specifically, we use a series of overlapping spheres to represent the free space of the environment and propose two novel designs that enable the algorithm to plan high-speed quadrotor trajectories in real-time. One is a sampling-based corridor generation method that generates spheres with large overlapped areas (hence overall corridor size) between two neighboring spheres. The second is a Receding Horizon Corridors (RHC) strategy, where part of the previously generated corridor is reused in each replan. Together, these two designs enlarge the corridor spaces in accordance with the quadrotor's current state and hence allow the quadrotor to maneuver at high speeds. We benchmark our algorithm against other state-of-the-art planning methods to show its superiority in simulation. Comprehensive ablation studies are also conducted to show the necessity of the two designs. The proposed method is finally evaluated on an autonomous LiDAR-navigated quadrotor UAV in woods environments, achieving flight speeds over 13.7m/s without any prior map of the environment or external localization facility. Copyright © 2022, The Authors. All rights reserved.

关键词： Spheres

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Learning Based Model Predictive control for Quadcopters with Dual Gaussian Process

arXiv

引用

arXiv 2021年

作者： Liu, Yuhan Tóth, Roland The Harbin Institute of Technology Department of Control Science and Engineering Harbin China The Eindhoven University of Tech. Dep. of Electrical Eng. Control Systems Group Eindhoven Netherlands The Institute for Computer Science and Control Budapest Hungary

An important issue in quadcopter control is that an accurate dynamic model of the system is nonlinear, complex, and costly to obtain. This limits achievable control performance in practice. Gaussian process (GP) based estimation is an effective tool to learn unknown dynamics from input/output data. However, conventional GP-based control methods often ignore the computational cost associated with accumulating data during the operation of the system and how to handle forgetting in continuous adaption. In this paper, we present a novel Dual Gaussian Process (DGP) based model predictive control strategy that improves the performance of a quadcopter during trajectory tracking. The bio-inspired DGP structure is a combination of a long-term GP and a short-term GP, where the long-term GP is used to keep the learned knowledge in memory and the short-term GP is employed to rapidly compensate unknown dynamics during online operation. Furthermore, a novel recursive online update strategy for the short-term GP is proposed to successively improve the learnt model during online operation in an efficient way. Numerical simulations are used to demonstrate the effectiveness of the proposed strategy. © 2021, CC BY-NC-SA.

关键词： Model predictive control

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Carbon-mediated iron valence state transformation for deep aluminum removal toward battery-grade FePO4 recycling

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Separation and Purification technology 2025年 371卷

作者： Feng, Yufa Yang, Liming Yang, Guang Ren, Wei Yi, Genping Wang, Huijie Yu, Haoxuan Xie, Yaohui Zhang, Fen Xue, Shimao Shi, Hui Shao, Penghui Luo, Xubiao School of Chemistry and Chemical Engineering Nanchang University Nanchang330031 China National-Local Joint Engineering Research Center of Heavy Metals Pollutants Control and Resource Utilization Nanchang Hangkong University Nanchang330063 China School of Life Sciences Key Laboratory of Jiangxi Province for Functional Biology and Pollution Control in Red Soil Regions Jinggangshan University Ji'an343009 China Biomass Molecular Engineering Center and Department of Materials Science and Engineering School of Materials and Chemistry Architecture Anhui Agricultural University Hefei230036 China State Key Lab of Urban Water Resource and Environment School of Civil and Environmental Engineering Harbin Institute of Technology Shenzhen Shenzhen518055 China

A key challenge in the closed-loop recycling of spent lithium iron phosphate is the difficulty in removing aluminum during the regeneration of battery-grade iron phosphate. Our study demonstrates that the carbon-mediated reduction of iron to its ferrous state facilitates the efficient removal of aluminum under controlled pH conditions. The carbon-mediated transfer of electrons from sulfite to Fe3+ and complete reduction to Fe2+, resulting in 99.4 % removal of aluminum in the pH-regulated precipitation de-alumination process. The purified iron phosphate solution is oxidatively precipitated to produce iron phosphate with an Al content as low as 0.00175 %. In-situ Raman, electron paramagnetic resonance (EPR), and the open circuit potential method confirm the formation of low-potential carbon-sulfite complexes and their role in accelerating electron transfer. A life cycle analysis shows that the process reduces energy consumption by 28.72 % and greenhouse gas emissions by 29.47 % while improving profit by nearly 369 % compared to conventional hydrometallurgical processes. The high-efficiency, clean technology proposed in this study for regenerating low-aluminum battery-grade iron phosphate will significantly contribute to the sustainable development of the lithium iron phosphate battery industry. © 2025

关键词： Paramagnetic resonance

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Spectral-Spatial Feature Extraction Enhanced Fully Connected Neural Network: Pixel-Wise Mechanical Damage Detection of Fresh-Eaten Corn Using Hyperspectral Image

SSRN

引用

SSRN 2022年

作者： Liu, Fengshuang Fu, Jun Wang, Qiang Zhao, Rongqiang College of Biological and Agricultural Engineering Jilin University Changchun China Key Laboratory of Efficient Sowing and Harvesting Equipment Ministry of Agriculture and Rural Affairs Jilin University Changchun China Department of Control Science and Engineering Harbin Institute of Technology Harbin China

Detection of mechanical damage on fresh-eaten corn is a critical process to guarantee corn quality and meet the processing demands of fresh-eaten corn. A novel spectral-spatial feature extraction enhanced fully connected neural network (SSFE-FCNN) classification method is proposed in this paper to achieve pixel-wise mechanical damage detection of fresh-eaten corn using hyperspectral image (HSI). Different from the previous HSI-based detection methods for food and agriculture products, which only utilize the spectral information in HSI, SSFE-FCNN extracts joint spectral-spatial features to improve the detection performance. To remove the noise in HSI and reduce the calculation cost, SSFEFCNN utilizes principal component analysis to reduce the spectral dimensions of HSI. The sparse tensor-based dictionary learning (STDL) extracts threedimensional (3-D) joint spectral-spatial tensor features from 3-D HSI cubes. A simple fully connected neural network (FCNN) is designed as a classifier, to learn high-level semantic features from the feature tensors obtained by STDL and provide pixel-wise classification results. Besides, the majority vote utilizes spatial information of the probability label map obtained by FCNN to refine the classification. Experimental results on HSI of fresh-eaten corn show that the proposed SSFE-FCNN is superior to support vector machine and convolutional neural network-based methods. The overall accuracy of SSFE-FCNN in the pixel-wise classification of fresh-eaten corn achieves as high as 98.09%, the false detection rate of the proposed method in the pixel-wise detection of mechanical damage achieves 2.08%, and the missing detection rate achieves 1.96%. Furthermore, the final classification maps obtained by pixel-wise classification can visualize the shape and location of mechanical damage. © 2022, The Authors. All rights reserved.

关键词： Pixels

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Affine formation maneuver tracking control of multiple second-order agents with time-varying delays

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Science China(Technological Sciences) 2019年第4期62卷 665-676页

作者： XU Yang LI DongYu LUO DeLin YOU YanCheng School of Aerospace Engineering Xiamen University Department of Electrical and Computer Engineering National University of Singapore Department of Control Science and Engineering Harbin Institute of Technology

This paper considers an affine maneuver tracking control problem for leader-follower type second-order multi-agent systems in the presence of time-varying delays, where the interaction topology is directed. Using the property of the affine transformation,this paper gives the sufficient and necessary conditions of achieving the affine localizability and extends it to the second-order condition. Under the(n + 1)-reachable condition of the given n-dimensional nominal formation with n + 1 leaders, a formation of agents can be reshaped in arbitrary dimension by only controlling these leaders. When the neighboring positions and velocities are available, a formation maneuver tracking control protocol with time-varying delays is constructed with the form of linear systems, where the tracking errors of the followers can be specified. Based on Lyapunov-Krasovskii stability theory, sufficient conditions to realize affine maneuvers are proposed and proved, and the unknown control gain matrix can be solved only by four linear matrix inequalities independent of the number of agents. Finally, corresponding simulations are carried out to verify the theoretical results, which show that these followers can track the time-varying references accurately and continuously.

关键词： formation control affine transformation multi-agent systems second-order dynamics time-varying delays

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SLAM-Based Joint Calibration of Differential RSS Sensor Array and Source Localization 49

SLAM-Based Joint Calibration of Differential RSS Sensor Arra...

引用

49th Annual Conference of the IEEE Industrial Electronics Society, IECON 2023

作者： Fu, Linya Qiao, Xu Huang, Shoudong Mao, Guoqiang Lin, Zhiyun Li, Youfu Kong, He Robotics Institute Uni. of Technology Sydney Sydney Australia Xidian University State Key Laboratory of Integrated Services Networks China City University of Hong Kong Department of Mechanical Engineering China Southern Uni. of Sci. and Tech. Shenzhen Key Laboratory of Control Theory and Intelligent Systems Shenzhen China Southern Uni. of Sci. and Tech. Guangdong Prov. Key Laboratory of Human-Augmentation and Rehabilitation Robotics in Universities Shenzhen China

ISBN: (纸本)9798350331820

Sensor arrays generating differential received signal strength (DRSS) measurements have found many applications in robotics. However, accurate calibration of these sensor arrays remains a challenge. Most existing methods are impractical in that they assume to know signal source positions or certain parameters (i.e., path loss exponent), and try to estimate the others. In this paper, we adopt graph simultaneous localization and mapping (SLAM) as a general framework for jointly estimating the source positions and parameters of the DRSS sensor array. Our contributions are twofold. On the one hand, by using a Fisher information matrix approach, we conduct a systematic observability analysis of the corresponding SLAM setup for the calibration problem. On the other hand, we propose an effective procedure to select the initial value which is fed to Levenberg-Marquardt iterations for further improving optimization accuracy and convergence. Extensive simulation and hardware experiments show that the proposed method renders high-quality calibration results. All the codes and data are publicly available at https://***/SUSTech2022/DRSS-sensor-array-calibration. © 2023 IEEE.

关键词： Calibration

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Incipient Sensor Fault Detection by Directly Monitoring Sliding Window Based Singular Values*

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IFAC-PapersOnLine 2022年第6期55卷 637-642页

作者： Wenqing Zhao Hao Luo Qiang Liu Hongquan Ji Nan Sheng College of Electrical Engineering and Automation Shandong University of Science and Technology Qingdao 266590 P. R. China Department of Control Science and Engineering Harbin Institute of Technology Harbin 150001 P. R. China State Key Laboratory of Synthetical Automation for Process Industries Northeastern University Shenyang 110819 P. R. China

Timely and accurate detection of incipient faults is critical to guarantee the normal operation of industrial processes. Nowadays, complex systems are usually equipped with a large number of sensors, which may be vulnerable to faults due to harsh environments. Statistical process monitoring is commonly used for fault detection purpose. Nevertheless, traditional fault detection methods are not sensitive enough to incipient faults, leading to the occurrence of many missed alarms. In this paper, the incipient fault detection task is achieved by monitoring the changes of sample singular values within a sliding window. Two incipient sensor fault types are considered, i.e. the sensor constant bias fault and sensor precision degradation fault. In addition, the rationale behind this strategy is also theoretically analyzed. Finally, a numerical example and the continuous stirred tank reactor process demonstrate the effectiveness of the proposed method.

关键词： Incipient sensor fault fault detection constant bias precision degradation singular value

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Precise motion control of wafer stages via adaptive neural network and fractional-Order Super-twisting algorithm

arXiv

引用

arXiv 2021年

作者： Kuang, Zhian Sun, Liting Gao, Huijun Tomizuka, Masayoshi Research Institute of Intelligent Control and Systems Harbin Institute of Technology Harbin150001 China Mechanical Control System Lab Mechanical Engineering Department University of California BerkeleyCA94720 United States

To obtain precise motion control of wafer stages, an adaptive neural network and fractional-order super-twisting control strategy is proposed. Based on sliding mode control (SMC), the proposed controller aims to address two challenges in SMC: 1) reducing the chattering phenomenon, and 2) attenuating the influence of model uncertainties and disturbances. For the first challenge, a fractional-order terminal sliding mode surface and a super-twisting algorithm are integrated into the SMC design. To attenuate uncertainties and disturbances, an add-on control structure based on the radial basis function (RBF) neural network is introduced. Stability analysis of the closed-loop control system is provided. Finally, experiments on a wafer stage testbed system are conducted, which proves that the proposed controller can robustly improve the tracking performance in the presence of uncertainties and disturbances compared to conventional and previous controllers. © 2021, CC BY.

关键词： Linear motors

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Skin-Friction Drag Reduction Using Micro-Grate Patterned Superhydrophobic Surface 1

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5th Symposium on Fluid-Structure-Sound Interactions and control, FSSIC 2019

作者： Bingfu, Zhang Hui, Tang Sandy, To Institute for Turbulence-Noise-Vibration Interactions and Control Shenzhen Graduate School Harbin Institute of Technology Shenzhen China State Key Laboratory of Ultra-Precision Machining Technology Department of Industrial and System Engineering The Hong Kong Polytechnic University Hung Hom Hong Kong Department of Mechanical Engineering The Hong Kong Polytechnic University Hung Hom Hong Kong

ISBN: (数字)9789813349605

ISBN: (纸本)9789813349599

This study investigates experimentally the drag reduction of the micro-grate patterned superhydrophobic (SHPO) surface compared with its smooth flat counterpart in turbulent boundary layer flow. Two SHPO surfaces were examined, with the same air fraction but different grate spacings. Both surfaces were fabricated using ultra-precision machining techniques. A dedicated, high resolution skin-friction balance was developed to measure the drag reduction in a water tunnel at the Reynolds number Reτ, based on the friction velocity uτ, of about 500. Significant drag reductions of 41% and 34% were obtained by the two surfaces. It is found that neither the air fraction or the static contact angle can predict the reduction in drag. Further, we show that the shape of the gas–liquid interface between grates may have a pronounced effect on the drag reduction. © 2021, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.

关键词： Drag reduction High-resolution skin-friction balance Superhydrophobic surface

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