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Hybrid Dynamic Variables-Dependent Event-triggered Fuzzy Model Predictive Control

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IEEE/CAA Journal of Automatica Sinica 2024年第3期11卷 723-733页

作者： Xiongbo Wan Chaoling Zhang Fan Wei Chuan-ke Zhang Min Wu IEEE the School of Automation China University of Geosciencesthe Hubei Key Laboratory of Advanced Control and Intelligent Automation for Complex Systemsand the Engineering Research Center of Intelligent Technology for Geo-ExplorationMinistry of EducationWuhan 430074China

this article focuses on dynamic event-triggered mechanism(DEtM)-based model predictive control(MPC) for t-S fuzzy systems.A hybrid dynamic variables-dependent DEtM is carefully devised,which includes a multiplicative dynamic variable and an additive dynamic *** addressed DEtM-based fuzzy MPC issue is described as a “min-max” optimization problem(OP).to facilitate the co-design of the MPC controller and the weighting matrix of the DEtM,an auxiliary OP is proposed based on a new Lyapunov function and a new robust positive invariant(RPI) set that contain the membership functions and the hybrid dynamic variables.A dynamic event-triggered fuzzy MPC algorithm is developed accordingly,whose recursive feasibility is analysed by employing the RPI *** the designed controller,the involved fuzzy system is ensured to be asymptotically *** examples show that the new DEtM and DEtM-based MPC algorithm have the advantages of reducing resource consumption while yielding the anticipated performance.

关键词： Dynamic event-triggered mechanism(DEtM) hybrid dynamic variables model predictive control(MPC) robust positive invariant(RPI)set t-S fuzzy systems

Sustainable management of campus fallen leaves through low-temperature pyrolysis and application in Pb immobilization

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Journal of Environmental Sciences 2024年第5期139卷 281-292页

作者： Rongli tan ke Li Yue Sun Xiaoliang Fan Zhengtao Shen Lingyi tang School of Environment Nanjing UniversityNanjing 210023China School of Chemistry and Chemical Engineering Nanjing UniversityNanjing 210023China School of Earth and Engineering Sciences Nanjing UniversityNanjing 210023China Department of Earth and Atmospheric Sciences University of AlbertaEdmonton T6G 2E3Canada

Realizing campus sustainability requires the environmental-friendly and economical treatment of tremendous fallen *** fallen leaf biochar at a low temperature is a candidate *** this study,six common types of fallen leaves on the campus were pyrolyzed at 300℃.the obtained biochars were characterized and the adsorption mechanisms of lead(Pb)by the fallen leaf biochars were *** adsorption capacity of leaf biochar for Pb was relatively high,up to 209 mg/g(Yulania denudata leaf biochar).Adsorption of Pb onto active sites was the rate-limiting step for most leaf *** for Platanus leaf biochar,intraparticle diffusion of Pb^(2+)dominated owing to the lowest adsorption ***,the highest exchangeable Pb fraction(27%)indicated its potential for removing aqueous Pb^(2+).Ginkgo and Prunus cerasifera leaf biochar immobilized Pb by surface complexation and precipitation as lead ***,they were suitable for soil heavy metal *** study shed the light on the sustainable utilization of campus fallen leaves and the application of fallen leaf biochars in heavy metal remediation.

关键词： Fallen leaves Waste management Biochar Lead removal Sorption Circular campus

Universal silicon ring resonator for error-free transmission links

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Photonics Research 2024年第4期12卷 701-711页

作者： JUNBO ZHU WEIWEI ZHANG ke LI BHARAt PANt MARtIN EBERt XINGZHAO YAN MEHDI BANAKAR DEHN t.tRAN CALLUM G.LIttLEJOHNS FUWAN GAN GRAHAM REED DAVID J.tHOMSON Optoelectronics Research Centre University of SouthamptonSouthampton SO171BJUK National key Laboratory of Materials for Integrated Circuits Shanghai Institute of Microsystem and Information TechnologyChinese Academy of SciencesShanghai 200050China University of Chinese Academy of Sciences Beijing 100049China Peng Cheng Laboratory ShenzhenChina

We report the design, fabrication, and characterization of a universal silicon PN junction ring resonator for C band error-free communication links operated up to 50 Gb/s with co-designed optical modulation and detection performance. the universal p-n junction ring device shows co-designed detection responsivity up to 0.84 A/W, in conjunction with a modulation efficiency of -4 V·mm and>8 d B optical modulation extinction ratio, enabling C band 50 Gb/s NRZ communication link with a bit error rate≤3×10^(-12).

关键词： Gb/s resonator communication

Effect of viral hepatitis on type 2 diabetes:A Mendelian randomization study

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World Journal of Diabetes 2024年第2期15卷 220-231页

作者： Yun-Feng Yu Gang Hu ke-ke tong Xin-Yu Yang Jing-Yi Wu Rong Yu the First Hospital of Hunan University of Chinese Medicine Changsha 410007Hunan ProvinceChina the Hospital of Hunan University of traditional Chinese Medicine Changde 415213Hunan ProvinceChina College of Chinese Medicine Hunan University of Chinese MedicineChangsha 410208Hunan ProvinceChina the third Hospital of Zhejiang Chinese Medical University Hangzhou 310005Zhejiang ProvinceChina

BACKGROUND the effects of viral hepatitis(VH)on type 2 diabetes(t2D)remain *** to analyze the causal correlation between different types of VH and t2D using Mendelian randomization(MR).MEtHODS Single nucleotide polymorphisms of VH,chronic hepatitis B(CHB),chronic hepatitis C(CHC)and t2D were obtained from the BioBank Japan Project,European Bioinformatics Institute,and *** variance weighted,MREgger,and weighted median were used to test exposure-outcome *** MR-Egger intercept analysis and Cochran’s Q test were used to assess horizontal pleiotropy and heterogeneity,***-one-out sensitivity analysis was used to evaluate the robustness of the MR analysis *** the MR analysis showed no significant causal relationship between VH and t2D in Europeans[odds ratio(OR)=1.028;95%confidence interval(CI):0.995-1.062,P=0.101].there was a negative causal association between CHB and t2D among East Asians(OR=0.949;95%CI:0.931-0.968,Pthere was no significant causal association between CHC and t2D among East Asians(OR=1.018;95%CI:0.959-1.081,P=0.551).Intercept analysis and Cochran’s Q test showed no horizontal pleiotropy or heterogeneity(P>0.05).Sensitivity analysis showed that the results were *** Among East Asians,CHB is associated with a reduced t2D risk,but this association is limited by HBV load and *** VH among Europeans and CHC among East Asians are not associated with the risk of t2D,focusing on blood glucose in patients with CHC is still relevant for the early detection of t2D induced by CHCmediated pathways of hepatic steatosis,liver fibrosis,and cirrhosis.

关键词： Viral hepatitis Chronic hepatitis B Chronic hepatitis C type 2 diabetes Mendelian randomization

the medium-temperature dependence of jet transport coefficient in high-energy nucleus-nucleus collisions

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Nuclear Science and techniques 2024年第7期35卷 173-191页

作者： Man Xie Qing-Fei Han En-ke Wang Ben-Wei Zhang Han-Zhong Zhang key Laboratory of Atomic and Subatomic Structure and Quantum Control(MOE) Guangdong Basic Research Center of Excellence for Structure and Fundamental Interactions of MatterInstitute of Quantum Matter South China Normal UniversityGuangzhou510006China Guangdong-Hong Kong Joint Laboratory of Quantum Matter Guangdong Provincial Key Laboratory of Nuclear ScienceSouthern Nuclear Science Computing CenterSouth China Normal UniversityGuangzhou 510006China key Laboratory of Quark and Lepton Physics(MOE)and Institute of Particle Physics Central China Normal UniversityWuhan430079China

the medium-temperature t dependence of the jet transport coefficient̂q was studied via the nuclear modification factor RAA(p_(t))and elliptical flow parameter v_(2)(p_(t))for large transverse momentum p_(t) hadrons in high-energy nucleus-nucleus *** a next-to-leading-order perturbative QCD parton model for hard scatterings with modified fragmentation functions due to jet quenching controlled by q,we check the suppression and azimuthal anisotropy for large p_(t) hadrons,and extract q by global fits to RAA(pt)and v_(2)(pt)data in A+A collisions at RHIC and LHC,*** numerical results from the best fits show that q∕t^(3) goes down with local medium-temperature t in the parton jet *** with the case of a constant q∕t^(3),the going-down t dependence of q∕t^(3) makes a hard parton jet to lose more energy near t_(c) and therefore strengthens the azimuthal anisotropy for large pt *** a result,v_(2)(p_(t))for large pt hadrons was enhanced by approximately 10%to better fit the data at RHIC/*** the first-order phase transition from QGP to the hadron phase and the additional energy loss in the hadron phase,v_(2)(p_(t))is again enhanced by 5-10%at RHIC/LHC.

关键词： Jet quenching Jet transport parameter Hadron suppression Elliptic flow coefficient Energy loss asymmetry

State of the art in movement around a remote point:a review of remote center of motion in robotics

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Frontiers of Mechanical Engineering 2024年第2期19卷 1-28页

作者： Wuxiang ZHANG Zhi WANG ke MA Fei LIU Pengzhi CHENG Xilun DING School of Mechanical Engineering and Automation Beihang UniversityBeijing 100191China Ningbo Institute of technology Beihang UniversityNingbo 315832China Intelligent Aerospace Manufacturing Engineering technology Co. Ltd.Beijing 100191China

the concept of remote center of motion(RCM)is pivotal in a myriad of robotic applications,encompa-ssing areas such as medical robotics,orientation devices,and exoskeletal *** efficacy of RCM technology is a determining factor in the success of these robotic *** paper offers an exhaustive review of RCM technologies,elaborating on their various methodologies and practical *** delves into the unique characteristics of RCM across different degrees of freedom(DOFs),aiming to distill their fundamental *** addition,this paper categorizes RCM approaches into two primary classifications:design based and control *** are further organized according to their respective DOFs,providing a concise summary of their core *** upon the understanding of RCM’s versatile capabilities,this paper then transitions to an in-depth exploration of its applications across diverse robotic *** this review,we critically analyze the existing research challenges and issues that are inherently present in both RCM methodologies and their *** discussion is intended to serve as a guiding framework for future research endeavors and practical deployments in related areas.

关键词： remote center of motion mechanism robotics medical robot orientation device exoskeleton

Does type 1 diabetes serve as a protective factor against inflammatory bowel disease:A Mendelian randomization study

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World Journal of Diabetes 2024年第7期15卷 1551-1561页

作者： ke-ke tong Yun-Feng Yu Xin-Yu Yang Jing-Yi Wu Rong Yu Chuan-Chuan tan the First Hospital of Hunan University of Chinese Medicine Changsha 410007Hunan ProvinceChina School of traditional Chinese Medicine Hunan University of Chinese MedicineChangsha 410208Hunan ProvinceChina the third Hospital Zhejiang Chinese Medical UniversityHangzhou 310005Zhejiang ProvinceChina

BACKGROUND the impact of type 1 diabetes(t1D)on inflammatory bowel disease(IBD)remains *** to analyze the causal relationship between t1D and IBD using Mendelian randomization(MR).MEtHODS Single nucleotide polymorphisms were sourced from FinnGen for t1D,IBD,ulcerative colitis(UC)and Crohn’s disease(CD).Inverse variance-weighted,MREgger,and weighted median tests were used to assess exposure-outcome *** MR-Egger intercept was used to assess horizontal ***’s Q and leave-one-out method were used to analyze heterogeneity and sensitivity,*** Our MR analysis indicated that t1D was associated with a reduced risk of IBD[odds ratio(OR):0.959;95%confidence interval(CI):0.938-0.980;Pth no significant association observed in terms of CD risk(OR:0.966;95%CI:0.913-1.022;P=0.227).the MR-Egger intercept showed no horizontal pleiotropy(P>0.05).Cochran’s Q and leave-one-out sensitivity analyses showed that the results were not heterogeneous(P>0.05)and were *** this MR analysis suggests that t1D serves as a potential protective factor against IBD and UC but is independent of CD.

关键词： type 1 diabetes Inflammatory bowel disease Ulcerative colitis Crohn’s disease Mendelian randomization

Electroacupuncture improves cognitive function in a rat model of mild traumatic brain injury by regulating the SIRt-1/PGC-1α/mitochondrial pathway

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Chinese Medical Journal 2024年第6期137卷 711-719页

作者： Bo Jin Yemei Gao Yixian Fu Suxin Zhang ke Zhang Yibing Su Department of Neurosurgery Beijing Jishuitan HospitalCapital Medical UniversityBeijing 100035China Department of traditional Chinese Medicine Beijing Jishuitan HospitalCapital Medical UniversityBeijing 100035China School of traditional Chinese Medicine Beijing University of Chinese MedicineBeijing 100029China Department of Cardiology Peking Union Medical College HospitalChinese Academy of Medical Sciences&Peking Union Medical CollegeBeijing 100730China Department of Breast Surgical Oncology National Cancer CenterNational Clinical Research Center for CancerCancer HospitalChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijing 100021China

Background:Mild traumatic brain injury(mtBI)is a common neurological trauma that can lead to cognitive *** sirtuin-1(SIRt-1)/peroxisome proliferator-activated receptor gamma coactivator-1α(PGC-1α)pathway has been reported to have neuroprotective effects in rats with craniocerebral *** evaluated potential mechanisms underlying electroacupuncture-mediated recovery of cognitive function after mtBI,focusing on the SIRt-1/PGC-1α/mitochondrial ***:We included forty 6-week-old male Sprague-Dawley rats in this *** were randomly divided into four groups:controlled cortical impactor(CCI,n=10),sham operation(sham,n=10),electroacupuncture-treated CCI(CCI+EA,n=10),and electroacupuncture-treated sham(sham+EA,n=10)*** was performed by assigning a random number to each rat and using a random number *** mtBI rat model was established using a controllable cortical *** therapy was performed on the back of rats,by inserting acupuncture needles to the specific acupoints and setting appropriate parameters for *** evaluated spatial learning and memory functions with the Morris water maze *** performed quantitative real-time polymerase chain reaction(qRt-PCR),western blotting,adenosine triphosphate(AtP)determination,and mitochondrial respiratory chain complex I(MRCC I)determination on rat hippocampal *** analyzed SIRt-1/PGC-1α expression levels and the results of mitochondrial function assays,and compared differences between groups using bilateral Student’s ***:Compared with the sham group,SIRt-1/PGC-1α expression was downregulated in the hippocampus of CCI group(Pthough this expression was upregulated following electroacupuncture,it did not reach the levels observed in the sham group(Pth the sham group,MRCC I and AtP levels in the CCI group were significantly reduced,and increased after electroacupuncture(Pthe Morris water maze,electroacupun

关键词： Electroacupuncture Cognitive impairment Sirtuin-1 Mild traumatic brain injury SIRt-1/PGC-1α/mitochondrial pathway

An evolutionary multiobjective method based on dominance and decomposition for feature selection in classification

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Science China(Information Sciences) 2024年第2期67卷 5-19页

作者： Jing LIANG Yuyang ZHANG ke CHEN Boyang QU Kunjie YU Caitong YUE Ponnuthurai Nagaratnam SUGANtHAN School of Electrical and Information Engineering Zhengzhou University State key Laboratory of Intelligent Agricultural Power Equipment School of Electrical Engineering and Automation Henan Institute of Technology School of Electronics and Information Zhongyuan University of Technology KINDI Center for Computing Research College of EngineeringQatar University

Feature selection in classification can be considered a multiobjective problem with the objectives of increasing classification accuracy and decreasing the size of the selected feature subset. Dominance-based and decomposition-based multiobjective evolutionary algorithms(MOEAs) have been extensively used to address the feature selection problem due to their strong global search capability. However, most of them face the problem of not effectively balancing convergence and diversity during the evolutionary process. In addressing the aforementioned issue, this study proposes a unified evolutionary framework that combines two search forms of dominance and decomposition. the advantages of the two search methods assist one another in escaping the local optimum and inclining toward a balance of convergence and diversity. Specifically, an improved environmental selection strategy based on the distributions of individuals in the objective space is presented to avoid duplicate feature subsets. Furthermore, a novel knowledge transfer mechanism that considers evolutionary characteristics is developed, allowing for the effective implementation of positive knowledge transfer between dominance-based and decomposition-based feature selection methods. the experimental results demonstrate that the proposed algorithm can evolve feature subsets with good convergence and diversity in a shorter time compared with 9 state-of-the-art feature selection methods on 20 classification problems.

关键词： evolutionary algorithms feature selection multiobjective optimization knowledge transfer classification