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IEEE International Conference on Systems, Man and Cybernetics

作者： Kaiyue Liu Juan Chen Rui Wang College of Information Science and Technology Beijing University of Chemical Technology Beijing China Key Laboratory of Information Technology for Autonomous Underwater Vehicles Institute of Acoustics Chinese Academy of Sciences Beijing China

Multi-input and multi-output (MIMO) systems not only have large time-delay and strong coupling, but also have the complexity in the controller design caused by multiple time delays. Especially the existence of the non-minimum phase (RHP zero) in the controlled process model brings more difficulties to the control system. Due to the simplicity of the structure and calculation of the internal model control based on the inverted decoupling (ID-IMC), an improved Butterworth filter is introduced into the ID-IMC system design, so that the performance of the closed-loop control system is improved. Moreover, some realizable conditions are discussed to avoid the adverse effects caused by the pure time-leading and unstable poles (RHP poles). Aiming at the problems of the external disturbance and uncertainty, a sensitivity function and a μ analysis are employed to analyze the robust stability (RS) and robust performance (RP) of the system. Simulations are carried out to demonstrate the effectiveness of the proposed method.

关键词： MIMO communication Low pass filters Transfer functions Process control Delay effects Robustness Sensitivity

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Near-zero thermal expansion coordinated with geometric flexibility and π⋯π interaction in anisotropic [Zn8(SiO4)(m-BDC)6]n

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Inorganic Chemistry Frontiers 2019年第7期6卷 1675-1679页

作者： Zhanning Liu Xingxing Jiang Chiming Wang Chenxi Liu Zheshuai Lin Jinxia Deng Jun Chen Xianran Xing Beijing Advanced Innovation Center for Materials Genome Engineering Department of Physical Chemistry University of Science and Technology Beijing Beijing China Key Lab of Functional Crystals and Laser Technology Technical Institute of Physics and Chemistry Chinese Academy of Sciences Beijing 100190 China Beijing Key Laboratory for Science and Application of Function Molecular and Crystalline Materials University of Science and Technology Beijing Beijing China

Zero thermal expansion (ZTE), a phenomenon in which a lattice structure remains constant upon heating, has attracted considerable interest owing to its potential applications. To date, in molecular materials, intrinsic single-phase ZTE or near-ZTE materials, such as isotropic Prussian blue analogues, are very rare. Herein, we report a near-ZTE compound, [Zn₈(SiO₄)(m-BDC)₆]_n, which has an anisotropic framework structure with 1D helical chains along the crystallographic 4₂ axis. High-resolution synchrotron powder X-ray diffraction and single crystal diffraction investigations reveal a positive thermal expansion (PTE) α_a = +4.72 × 10⁻⁶ K⁻¹ and a negative thermal expansion (NTE) α_c = −13.77 × 10⁻⁶ K⁻¹, with a near-ZTE volumetric behaviour α_V = −4.35 × 10⁻⁶ K⁻¹ in the temperature range 100–475 K. Raman spectra and density functional theory (DFT) calculations demonstrate that spring-like geometric deformation results in the anisotropic thermal expansion behaviour. Further temperature-dependent structural analysis and reduced density gradient (RGD) calculations evidence that the π⋯π repulsion leads to the contraction of the building linkage. The synergistic effect of the geometric deformation and π⋯π interaction gives rise to the overall volumetric near-ZTE behaviour in [Zn₈(SiO₄)(m-BDC)₆]_n.

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Guided Synthesis of a Mo/Zn Dual Single-Atom Nanozyme with Synergistic Effect and Peroxidase-like Activity

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Angewandte Chemie 2022年第25期134卷

作者： Dr. Chong-Bo Ma Yaping Xu Dr. Lixin Wu Quan Wang Dr. Jia-Jia Zheng Dr. Guoxi Ren Dr. Xiaoyu Wang Dr. Xingfa Gao Dr. Ming Zhou Dr. Ming Wang Dr. Hui Wei Key Laboratory of Polyoxometalate and Reticular Material Chemistry of Ministry of Education National & Local United Engineering Laboratory for Power Batteries Key Laboratory of Nanobiosensing and Nanobioanalysis at Universities of Jilin Province Analysis and Testing Center Department of Chemistry Northeast Normal University Changchun Jilin Province 130024 China State Key Laboratory of Supramolecular Structure and Materials College of Chemistry Jilin University Changchun 130012 China Department of Biomedical Engineering College of Engineering and Applied Sciences Nanjing National Laboratory of Microstructures Jiangsu Key Laboratory of Artificial Functional Materials Nanjing University Nanjing Jiangsu 210023 China State Key Laboratory of Analytical Chemistry for Life Science and State Key Laboratory of Coordination Chemistry School of Chemistry and Chemical Engineering Chemistry and Biomedicine Innovation Center (ChemBIC) Nanjing University Nanjing Jiangsu 210023 China Laboratory of Theoretical and Computational Nanoscience National Center for Nanoscience and Technology of China Beijing 100190 China State Key Laboratory of Functional Materials for Informatics Shanghai Institute of Microsystem and Information Technology Chinese Academy of Sciences Shanghai 200050 China

We present a facile route towards a dual single-atom nanozyme composed of Zn and Mo, which utilizes the non-covalent nano-assembly of polyoxometalates, supramolecular coordination complexes as the metal-atom precursor, and a macroscopic amphiphilic aerogel as the supporting substrate. The dual single-atoms of Zn and Mo have a high content (1.5 and 7.3 wt%, respectively) and exhibit a synergistic effect and a peroxidase-like activity. The Zn/Mo site was identified as the main active center by X-ray absorption fine structure spectroscopy and density functional theory calculation. The detection of versatile analytes, including intracellular H 2 O 2 , glucose in serum, cholesterol, and ascorbic acid in commercial beverages was achieved. The nanozyme has an outstanding stability and maintained its performance after one year's storage. This study develops a new peroxidase-like nanozyme and provides a robust synthetic strategy for single-atom catalysts by utilizing an aerogel as a facile substrate that is capable of stabilizing various metal atoms.

关键词： Aerogel Substrates Dual Single Atoms Nanozymes Peroxidase Synergy Effect

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A kernel-width adaption diffusion maximum correntropy algorithm

TechRxiv

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TechRxiv 2020年

作者： Guo, Ying Ma, Bing Li, Yingsong School of Information Science and Engineering Shenyang University of Technology Liao Ning 110870 China College of Information and Communication Engineering Harbin Engineering University China Key Laboratory of Microwave Remote Sensing Chinese Academy of Sciences Beijing100190 China

Impulsive noises are widely existing in various systems like noise cancellation system and wireless communication systems, where adaptive filtering (AF) is always employed to identify specific systems. Additionally, the impulsive noises will affect the performance for estimating these systems, resulting in slow convergence or worse identification accuracy. In this paper, a diffusion maximum correntropy criterion (DMCC) algorithm with adaption kernel width is proposed, denoting as DMCCadapt algorithm, to find out a solution for dynamically choosing the kernel width. The DMCCadapt algorithm chooses small kernel width at initial stage to improve its convergence speed rate, and uses large kernel width at completion stage to reduce its steady-state error. To render the proposed DMCCadapt algorithm suitable for sparse system identifications, the DMCCadapt algorithm based on proportional coefficient adjustment is realized and named as diffusion proportional maximum correntropy criterion (DPMCCadapt). The theoretical analysis and simulation results are presented to show that the DPMCCadapt and DMCCadapt algorithms have better convergence than the traditional diffusion AF algorithms under impulse noise and sparse systems. © 2020, CC BY.

关键词： Adaptive filters

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Comment on "First Observation of Multiple Transverse Wobbling Bands of Different Kinds in 183Au [Phys. Rev. Lett. 125, 132501 (2020)]"

arXiv

引用

arXiv 2020年

作者： Guo, Song Petrache, C.M. CAS Key Laboratory of High Precision Nuclear Spectroscopy Institute of Modern Physics Chinese Academy of Sciences Lanzhou730000 China School of Nuclear Science and Technology University of Chinese Academy of Science Beijing100049 China Université Paris-Saclay CNRS/IN2P3 IJCLab Orsay91405 France

In [S. Nandi et al., Phys. Rev. Lett. 125, 132501 (2020)] two transverse wobbling bands were reported in 183Au. The critical experimental proof for this assignment is the E2 dominated linking transitions between the wobbling and normal bands, which are supported by fitting the measured DCO ratio and polarization results. However, the uncertainties are significantly underestimated according to an analysis on the statistical error. With reasonable error, the mixing ratios cannot be exclusively decided, and the M1 dominated character cannot be excluded, indicating that the wobbling interpretation is questionable. Copyright © 2020, The Authors. All rights reserved.

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Detailed Comparison of Renormalization Scale-Setting Procedures based on the Principle of Maximum Conformality

arXiv

引用

arXiv 2021年

作者： Huang, Xu-Dong Yan, Jiang Ma, Hong-Hao Giustino, Leonardo Di Shen, Jian-Ming Wu, Xing-Gang Brodsky, Stanley J. Department of Physics Chongqing Key Laboratory for Strongly Coupled Physics Chongqing University Chongqing401331 China Institute of High Energy Physics Chinese Academy of Sciences Beijing100049 China Center for High Energy Physics Peking University Beijing100871 China Department of Science and High Technology University of Insubria via valleggio 11 ComoI-22100 Italy School of Physics and Electronics Hunan University Changsha410082 China SLAC National Accelerator Laboratory Stanford University StanfordCA94039 United States

The Principle of Maximum Conformality (PMC), which generalizes the conventional Gell-Mann-Low method for scale-setting in perturbative QED to non-Abelian QCD, provides a rigorous method for achieving unambiguous scheme-independent, fixed-order predictions for physical observables consistent with the principles of the renormalization group. In addition to the original multi-scale-setting approach (PMCm), two variations of the PMC have been proposed to deal with ambiguities associated with the uncalculated higher order terms in the pQCD series, i.e. the single-scale-setting approach (PMCs) and the procedures based on "intrinsic conformality" (PMC∞). In this paper, we will give a detailed comparison of these PMC approaches by comparing their predictions for three important quantities Re+e−, Rτ, and Γ(H → bb¯) up to four-loop pQCD corrections. The PMCs approach determines an overall effective running coupling αs(Q) by the recursive use of the renormalization group equation, whose argument Q represents the actual momentum flow of the process. Our numerical results show that the PMCs method, which involves a somewhat simpler analysis, can serve as a reliable substitute for the full multi-scale PMCm method, and that it leads to more precise pQCD predictions with small residual scale dependence. Copyright © 2021, The Authors. All rights reserved.

关键词： Forecasting

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Peri-urban ammonia emissions in beijing-Tianjin-Hebei decrease with restructuring of China's livestock industry

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Agricultural Systems 2025年 228卷

作者： Fan, Xiangwen Wang, Haodan Winiwarter, Wilfried Zhao, Zhanqing Bai, Zhaohai Ma, Lin Key Laboratory of Agricultural Water Resources Hebei Key Laboratory of Soil Ecology Center for Agricultural Resources Research Institute of Genetic and Developmental Biology Chinese Academy of Sciences 286 Huaizhong Road Hebei Shijiazhuang 050021 China State Key Laboratory of Pollution Control and Resource Reuse School of the Environment Nanjing University Jiangsu Nanjing 210023 China Pollution Prevention Biotechnology Laboratory of Hebei Province School of Environmental Science and Engineering Hebei University of Science and Technology Shijiazhuang 050018 China International Institute for Applied Systems Analysis (IIASA) Schlossplatz 1 Laxenburg A-2444 Austria Institute of Environmental Engineering University of Zielona Góra Licealna 9 PL Zielona Góra 65-417 Poland School of Land Science and Space Planning Hebei GEO University 136 East Huai’ an Road Yuhua District Hebei Shijiazhuang 050031 China

CONTEXT: Ammonia (NH3) emissions from livestock production significantly contribute to formation of PM2.5, posing a major environmental concern. Over the past two decades, compared to other regions in China, beijing, ... 详细信息

CONTEXT: Ammonia (NH₃) emissions from livestock production significantly contribute to formation of PM_2.5, posing a major environmental concern. Over the past two decades, compared to other regions in China, beijing, Tianjin and Hebei (BTH) region, has been suffering from high NH₃ emissions due to increased urbanization and resulting intensified agricultural production. Uneven distribution of livestock leads to separation of crop and livestock, resulting in the waste of manure resources and environmental pollution. OBJECTIVE: This study systematically investigates the 2000–2019 temporal-spatial pattern of NH₃ emissions in the BTH region, with three focuses on: (1) analyzing the spatial distribution of livestock, the efficiency of livestock manure utilization, and the characteristics of NH₃ emissions;(2) elucidating impact of restructuring livestock industry on NH₃ emissions;(3) developing scenarios analysis to propose potential optimization pathways for reducing livestock NH₃ emissions. METHODS: We utilized the NUFER model to analyze livestock NH₃ emissions in the BTH region. The distribution of livestock was further elucidated through a panel analysis, which identified key factors shaping their spatial arrangement. Scenarios analysis (S1: coupling crop and livestock, S2: spatial planning) was applied to explore optimization pathways of reducing NH₃ emission. RESULTS AND CONCLUSIONS: The study reveals an initial increasing trend in livestock NH₃ emissions, peaking in 2015 at 511 kt NH₃, followed by a sharp decline to 401 kt NH₃ in 2019. Spatially, emission hotspots concentrated in the northeastern BTH region. Based on restructuring of China's livestock industry, the number of livestock started to decrease in areas designated as “urban sprawl” or for “ecological protection”, while the number of livestock in other land (land except those

关键词： Ammonia emission Livestock distribution Mitigation potential Sustainable agricultural system Temporal-spatial trends

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Non-Periodic Lower-Limb Motion Recognition with Noncontact Capacitive Sensing

Non-Periodic Lower-Limb Motion Recognition with Noncontact C...

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IEEE/ASME (AIM) International Conference on Advanced Intelligent Mechatronics

作者： Enhao Zheng Jinchen Zeng Dongfang Xu Qining Wang Hong Qiao State Key Laboratory of Management and Control for Complex Systems Institute of Automation Chinese Academy of Sciences No. 95 of Zhongguancun East Road Beijing China School of Automation and Electrical Engineering University of Science and Technology Beijing 30 Xueyuan Road Beijing Robotics Research Group College of Engineering Peking University Beijing China

ISBN: (数字)9781728167947

ISBN: (纸本)9781728167954

Noncontact captive sensing is a new sensing strategy that we proposed previously to compensate for the limitations of existing surface electromyography studies for exoskeleton control. It has been validated on locomotion mode recognition and gait phase estimation. However, our previous studies addressed the tasks of periodic ambulation based on machine learning algorithms. The performances of the capacitive sensing on non-periodical lower-limb motion recognition have never been evaluated. In this preliminary study, we designed a motion recognition method by fusing the capacitive sensing and the inertial sensors. The recognition algorithm was designed based on the combined logics, which freed the system from burdensome training procedures in the recognition tasks. The method was validated on three healthy subjects in performing 6 lower-limb motions and the transitions between them (10 in total). The capacitance-inertial fusion method produced an average precision/recall of >0.92 in static motions and >0.86 with transitions. The most prominent improvement of using the capacitance signals is that it increases the time-response ability during the motion transitions. Compared with purely using inertial sensors, the sensor fusion method reduced more than 100-ms latency on average. The pilot study extends the scope of the new sensing method in human motion recognition. Future efforts will be paid in this direction to get more promising results.

关键词： Robot sensing systems Capacitance Electrodes Task analysis Legged locomotion Exoskeletons

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Physically-Constrained Transfer Learning through Shared Abundance Space for Hyperspectral Image Classification

arXiv

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arXiv 2020年

作者： Qu, Ying Baghbaderani, Razieh Kaviani Li, Wei Gao, Lianru Zhang, Yuxiang Qi, Hairong The Advanced Imaging and Collaborative Information Processing Group Department of Electrical Engineering and Computer Science University of Tennessee KnoxvilleTN37996 United States The School of Information and Electronics Beijing Institute of Technology Beijing100081 China The Key Laboratory of Digital Earth Science Aerospace Information Research Institute Chinese Academy of Sciences Beijing100094 China

Hyperspectral image (HSI) classification is one of the most active research topics and has achieved promising results boosted by the recent development of deep learning. However, most state-of-the-art approaches tend to perform poorly when the training and testing images are on different domains, e.g., source domain and target domain, respectively, due to the spectral variability caused by different acquisition conditions. Transfer learning-based methods address this problem by pre-training in the source domain and fine-tuning on the target domain. Nonetheless, a considerable amount of data on the target domain has to be labeled and non-negligible computational resources are required to retrain the whole network. In this paper, we propose a new transfer learning scheme to bridge the gap between the source and target domains by projecting the HSI data from the source and target domains into a shared abundance space based on their own physical characteristics. In this way, the domain discrepancy would be largely reduced such that the model trained on the source domain could be applied on the target domain without extra efforts for data labeling or network retraining. The proposed method is referred to as physically-constrained transfer learning through shared abundance space (PCTL-SAS). Extensive experimental results demonstrate the superiority of the proposed method as compared to the state-of-the-art. The success of this endeavor would largely facilitate the deployment of HSI classification for real-world sensing scenarios. Copyright © 2020, The Authors. All rights reserved.

关键词： Deep learning

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Development of the Scientific,Transparent and Applicable Rankings (STAR) tool for clinical practice guidelines

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Chinese Medical Journal 2023年第12期136卷 1430-1438页

作者： Nan Yang Hui Liu Wei Zhao Yang Pan Xiangzheng Lyu Xiuyuan Hao Xiaoqing Liu Wen’an Qi Tong Chen Xiaoqin Wang Boheng Zhang Weishe Zhang Qiu Li Dong Xu Xinghua Gao Yinghui Jin Feng Sun Wenbo Meng Guobao Li Qijun Wu Ze Chen Xu Wang Janne Estill Susan LNorris Liang Du Yaolong Chen Junmin Wei Evidence-Based Medicine Center School of Basic Medical SciencesLanzhou UniversityLanzhouGansu 730000China Institute of Global Health University of GenevaGeneva 1202Switzerland School of Public Health Lanzhou UniversityLanzhouGansu 730000China Editor-in-Chief Office Chinese Medical Association Publishing HouseBeijing 100052China Marketing Department Chinese Medical Association Publishing HouseBeijing 100052China Editorial Department National Medical Journal of ChinaChinese Medical Association Publishing HouseBeijing 100052China Editorial Department Chinese Medical JournalChinese Medical Association Publishing HouseBeijing 100052China Division of Infectious Diseases Department of Internal MedicineState Key Laboratory of Complex Severe and Rare DiseasePeking Union Medical College HospitalChinese Academy of Medical Sciences&Peking Union Medical CollegeBeijing 100730China Editorial office of Digital Medicine and Health Chinese Medical Association Publishing HouseBeijing 100052China Department of Hematology Huashan HospitalFudan UniversityShanghai 200040China Evidence-based Medicine Center Fudan UniversityShanghai 200032China Department of Hepatic Oncology Xiamen Clinical Research Center for Cancer TherapyZhongshan Hospital(Xiamen)Fudan UniversityXiamenFujian 361015China Department of Obstetrics Xiangya HospitalCentral South UniversityChangshaHunan 410008China Department of Nephrology Children’s Hospital of Chongqing Medical UniversityNational Clinical Research Center for Child Health and DisordersMinistry of Education Key Laboratory of Child Development and DisordersChongqing Key Laboratory of PediatricsChongqing 400014China SMU Institute for Global Health(SIGHT) School of Health Management and Dermatology HospitalSouthern Medical University(SMU)GuangzhouGuangdong 510515China Department of Dermatology The First Hospital of China Medical UniversityShenyangLiaoning 110001China Center for Evidence-Based and Translational Medicine Zhongnan Hospital of Wuhan UniversityWu

Background:This study aimed to develop a comprehensive instrument for evaluating and ranking clinical practice guidelines,named Scientific,Transparent and Applicable Rankings tool(STAR),and test its reliability,validity,and ***:This study set up a multidisciplinary working group including guideline methodologists,statisticians,journal editors,clinicians,and other *** review,Delphi methods,and hierarchical analysis were used to develop the STAR *** evaluated the instrument’s intrinsic and interrater reliability,content and criterion validity,and ***:STAR contained 39 items grouped into 11 *** mean intrinsic reliability of the domains,indicated by Cronbach’sαcoefficient,was 0.588(95%confidence interval[CI]:0.414,0.762).Interrater reliability as assessed with Cohen’s kappa coefficient was 0.774(95%CI:0.740,0.807)for methodological evaluators and 0.618(95%CI:0.587,0.648)for clinical *** overall content validity index was ***’s r correlation for criterion validity was 0.885(95%CI:0.804,0.932).The mean usability score of the items was 4.6 and the median time spent to evaluate each guideline was 20 ***:The instrument performed well in terms of reliability,validity,and efficiency,and can be used for comprehensively evaluating and ranking guidelines.

关键词： Practice guideline Evidence-based practice Quality control

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