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Gender Differences in the Prevalence of Overweight and Obesity,Associated Behaviors,and Weight-related Perceptions in a National Survey of Primary School Children in China

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Biomedical and Environmental Sciences 2018年第1期31卷 1-11页

作者： ZHANG Juan ZHAI Yi FENG Xiao Qi LI Wei Rong lyu yue bin ASTELL-BURT Thomas ZHAO Peng Yu SHI Xiao Ming School of Public Health Peking Union Medical College & Chinese Academy of Medical Sciences Beijing 100730 China Division of Non-Communicable Disease Control and Community Health Chinese Center for Disease Control and Prevention Beijing 102206 China Population Wellbeing and Environment Research Lab (PowerLab) School of Health and Society Faculty of Social Sciences University of Wollongong Wollongong New South Wales' 2522 Australia Early Start Research Faculty of Social Sciences University of Wollongong Wollongong New South Wales 2522 Australia Illawarra Health and Medical Research Institute University of Wollongong Wollongong New South Wales 2522 Australia Menzies Centre for Health Policy School of Public Health University of Sydney Sydney New South Wales' 2522 Australia Beijing Friendship Hospital Capital Medical University Beijing 100050 China National Institute of Environmental Health Chinese Center for Disease Control and Prevention Beijing 100021 China

Objective To in vestigate potential gender differences in the odds of overweight/obese, weight-related perceptions, and behaviors among Chinese school children. Methods Height, weight, and a survey of weight-related perceptions and behaviors were measured in a nationally representative survey of 12,811 children in primary schools in China. Logistic regression analyses were used to assess gender differences, adjusting for confounders. Results Boys had higher odds of being overweight/obese compared to girls within both urban [adjusted odds ratio （OR） 2.30, 95% CI 2.00 to 2.65] and rural areas （OR = 1.85, 95% CI 1.55 to 2.20）. Girls reported healthier diets （e.g., daily vegetables OR = 0.79, 95% CI 0.73 to 0.85） whereas boys consumed fried food （OR = 1.21, 95% CI 1.06 to 1.38） and sugar-sweetened drinks more often （OR = 1.49, 95% CI 1.34 to 1.65）. Gender differences included higher odds of boys perceiving themselves as overweight if they had more highly educated mothers （OR = 1.35, 95% CI 1.09 to 1.68）, less educated fathers （OR = 0.79, 95% CI 0.63 to 0.99）, and if they frequently consumed carbonated drinks （OR = 1.48, 95% CI 1.07 to 2.05）. Conclusion Childhood obesity prevention in China should be gender-focused, particularly for boys who reported an unhealthier diet but were less likely to see they were fat, even though more boys were overweight or obese than girls.

关键词： Overweight and obesity Behaviors Weight perception Gender Children

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Alcohol Cessation in Late Life is Associated with Lower Risk of Cognitive Impairment among the Older Adults in China

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Biomedical and Environmental Sciences 2021年第7期34卷 509-519页

作者： ZHANG Xiao Chang GAO Xiang lyu yue bin ZHOU Jin Hui WEI Yuan YIN Zhao Xue MA Ji Xiang MAO Chen SHI Xiao Ming National Institute of Environmental Health Chinese Center for Disease Control and PreventionBeijing 100021China Division of Non-communicable Disease and Ageing Health Management Chinese Center for Disease Control and PreventionBeijing 102206China Nutritional Epidemiology Lab Pennsylvania State UniversityPhiladelphia 16801PAUSA Center for Disease Control and Prevention of Shandong Province Jinan 250014ShandongChina Division of Epidemiology School of Public HealthSouthern Medical UniversityGuangzhou 510515GuangdongChina Center for Global Health School of Public HealthNanjing Medical UniversityNanjing 211166JiangsuChina

Objective Evidence regarding alcohol consumption and cognitive impairment is *** cessation of drinking alcohol by non-dependent drinkers alters the risk of cognitive impairment remains *** study prospectively evaluated the potential association between the history of lifetime alcohol cessation and risk of cognitive *** This study included 15,758 participants age 65 years or older,selected from the Chinese Longitudinal Healthy Longevity Survey(CLHLS)that covered 23 provinces in *** alcohol use status,duration of alcohol cessation,and alcohol consumption before abstinence were self-reported by participants;cognitive function was evaluated using Mini-mental State Examination(MMSE).Causespecific hazard models and restricted cubic splines were applied to estimate the effect of alcohol use on cognitive *** Among the 15,758 participants,mean(±SD)age was 82.8 years(±11.9 years),and 7,199(45.7%)were *** a mean of 3.9 years of follow-up,3,404 cases were identified as cognitive *** with current drinkers,alcohol cessation of five to nine years[adjusted HR,0.79(95%CI:0.66-0.96)]and more than nine years[adjusted HR,0.82(95%CI:0.69-0.98)]were associated with lower risk of cognitive *** A longer duration of alcohol cessation was associated with a lower risk of cognitive impairment assessed by *** cessation is never late for older adults to prevent cognitive impairment.

关键词： Cognition Alcohol abstinence Alcohol drinking Epidemiology Aging

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The Status and Associated Factors of Successful Aging among Older Adults Residing in Longevity Areas in China

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Biomedical and Environmental Sciences 2016年第5期29卷 347-355页

作者： SHI Wen Hui ZHANG Hong Yan ZHANG Juan lyu yue bin Melanie Sereny Brasher YIN Zhao Xue LUO Jie Si HU Dong Sheng FEN Lei SHI Xiao Ming Division of NCD Control and Community Health Chinese Center for Disease Control and Prevention Beijing 102206 China Department of Epidemiology and Health Statistics College of Public Health Zhengzhou University Zhengzhou 450001 Henan China Department of Sociology and Anthropology Department of Human Development and Family Studies University of Rhode Island Kingston RI02881 USA Department of Preventive Medicine Shenzhen University School of Medicine Shenzhen Guangdong 518060 Guangzhou China Department of Psychological Medicine Yong Loo Lin School of Medicine National University of Singapore 119077 Singapore Institute of Environment Health and Related Product Safety Chinese Center for Disease Control and Prevention Beijing 100020 China

Objective This study aims to assess the status of successful aging （SA） in longevity areas in China and explore multiple factors associated with SA among the young-old and oldest-old. Methods A total of 2296 elderly people aged 65 and older were interviewed in the longevity areas sub-sample of the Chinese Longitudinal Healthy Longevity Survey （CLHLS） in 2012. Baseline assessments included a researcher-administered questionnaire, physical examination, and laboratory testing. A logistic regression model was used to identify factors associated with SA. Results The prevalence of SA was 38.81% in the CLHLS in 2012. There were significant differences between ages groups, with SA compromising 56.85% among _〉65 years group and 20.31% among 〉100 years group （X2trend=126.73, P〈O.01）. The prevalence of SA among females was 33.59%, which was significantly lower than that among males （45.58%）（X2gender=33.65, P〈0.05）. In the regression analysis, having anemia ~OR=0.744, 95% CI： 0.609-0.910）, poor lifestyle （OR=0.697, 95% CI： 0.568-0.854）, poor sleep quality （OR=0.558, 95% CI： 0.456-0.682）, and central obesity （OR=0.684, 95% CI： 0.556-0.841） were the main factors associated with SA. The promoting SA rate decreased as age increased, and the group of 65-79 years had higher odds than the other age group. Conclusion Preventing central obesity, improving sleep quality and promoting healthy lifestyle may contribute to achieve SA among the elderly.

关键词： Successful aging Older adults Evaluation Associated factors

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Sum-Rate Maximization in Active RIS-Assisted Multi-Antenna WPCN

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China Communications 2024年第6期21卷 23-39页

作者： Jiang Jie lyu bin Chen Pengcheng Yang Zhen School of Communications and Information Engineering Nanjing University of Posts and TelecommunicationsNanjing 210003China Jiangsu Provincial Key Laboratory of Photonic and Electronic Materials Sciences and Technology Nanjing UniversityNanjing 210003China

In this paper,we propose an active reconfigurable intelligent surface(RIS)enabled hybrid relaying scheme for a multi-antenna wireless powered communication network(WPCN),where the active RIS is employed to assist both wireless energy transfer(WET)from the power station(PS)to energyconstrained users and wireless information transmission(WIT)from users to the receiving station(RS).For further performance enhancement,we propose to employ both transmit beamforming at the PS and receive beamforming at the *** formulate a sumrate maximization problem by jointly optimizing the RIS phase shifts and amplitude reflection coefficients for both the WET and the WIT,transmit and receive beamforming vectors,and network resource *** solve this non-convex problem,we propose an efficient alternating optimization algorithm with the linear minimum mean squared error criterion,semidefinite relaxation(SDR)and successive convex approximation ***,the tightness of applying the SDR is *** results demonstrate that our proposed scheme with 10 reflecting elements(REs)and 4 antennas can achieve 17.78%and 415.48%performance gains compared to the single-antenna scheme with 10 REs and passive RIS scheme with 100 REs,respectively.

关键词： active reconfigurable intelligent surface beamforming sum-rate maximization wireless powered communication network

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A feedback control method for phase signal demodulation in fber-optic hydrophones

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Applied Mathematics and Mechanics(English Edition) 2024年第3期45卷 515-528页

作者： Zhiqiang LIU Lei XIA Qiangfeng lyu bin WU Ronghua HUAN Zhilong HUANG Department of Mechanics Key Laboratory of Soft Machines and Smart Devices of Zhejiang ProvinceZhejiang UniversityHangzhou 310000China Huanjiang Laboratory Zhuji 311899Zhejiang ProvinceChina Advanced Technology Research Institute Zhejiang UniversityHangzhou 310000China

In the realm of acoustic signal detection,the identification of weak signals,particularly in the presence of negative signal-to-noise ratios,poses a significant *** challenge is further heightened when signals are acquired through fiber-optic hydrophones,as these signals often lack physical significance and resist clear systematic *** processing methods,e.g.,low-pass filter(LPF),require a thorough understanding of the effective signal bandwidth for noise reduction,and may introduce undesirable time *** paper introduces an innovative feedback control method with dual Kalman filters for the demodulation of phase signals with noises in fiber-optic hydrophones.A mathematical model of the closed-loop system is established to guide the design of the feedback control,aiming to achieve a balance with the input phase *** dual Kalman filters are instrumental in mitigating the effects of signal noise,observation noise,and control execution noise,thereby enabling precise estimation for the input phase *** effectiveness of this feedback control method is demonstrated through examples,showcasing the restoration of low-noise signals,negative signal-to-noise ratio signals,and multi-frequency *** research contributes to the technical advancement of high-performance devices,including fiber-optic hydrophones and phase-locked amplifiers.

关键词： feedback control method fiber-optic hydrophone acoustic signal detection phase signal

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Stackelberg Game for Wireless Powered and Backscattering Enabled Sensor Networks

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China Communications 2024年第3期21卷 189-204页

作者： lyu bin Cao Yi Wang Shuai Guo Haiyan Hao Chengyao Key Laboratory of Ministry of Education in Broadband Wireless Communication and Sensor Network Technology Nanjing University of Posts and TelecommunicationsNanjing 210003China Jiangsu Engineering Research Center of Novel Optical Fiber Technology and Communication Network Suzhou 215006China Guangdong-Hong Kong-Macao Joint Laboratory of Human-Machine Intelligence-Synergy Systems Shenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhen 518055China

This paper investigates a wireless powered and backscattering enabled sensor network based on the non-linear energy harvesting model, where the power beacon(PB) delivers energy signals to wireless sensors to enable their passive backscattering and active transmission to the access point(AP). We propose an efficient time scheduling scheme for network performance enhancement, based on which each sensor can always harvest energy from the PB over the entire block except its time slots allocated for passive and active information delivery. Considering the PB and wireless sensors are from two selfish service providers, we use the Stackelberg game to model the energy interaction among them. To address the non-convexity of the leader-level problem, we propose to decompose the original problem into two subproblems and solve them iteratively in an alternating manner. Specifically, the successive convex approximation, semi-definite relaxation(SDR) and variable substitution techniques are applied to find a nearoptimal solution. To evaluate the performance loss caused by the interaction between two providers, we further investigate the social welfare maximization problem. Numerical results demonstrate that compared to the benchmark schemes, the proposed scheme can achieve up to 35.4% and 38.7% utility gain for the leader and the follower, respectively.

关键词： backscatter communication energy interaction stackelberg game wireless powered sensor network

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Observer-Based Adaptive Robust Precision Motion Control of a Multi-Joint Hydraulic Manipulator

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IEEE/CAA Journal of Automatica Sinica 2024年第5期11卷 1213-1226页

作者： Zheng Chen Shizhao Zhou Chong Shen Litong lyu Junhui Zhang bin Yao State Key Laboratory of Fluid Power and Mechatronic Systems Zhejiang UniversityHangzhou 310027 Ocean College Zhejiang UniversityZhoushan 316021China School of Mechanical Engineering Shijiazhuang Tiedao UniversityShijiazhuang 050000 State Key Laboratory of Fluid Power and Mechatronic Systems Zhejiang UniversityHangzhou 310027China School of Mechanical Engineering Purdue UniversityWest LafayetteIN 47907 USA

Hydraulic manipulators are usually applied in heavy-load and harsh operation ***,when faced with a complex operation,the traditional proportional-integral-derivative(PID)control may not meet requirements for high control ***-based full-state-feedback control is an effective alternative,but the states of a hydraulic manipulator are not always available and reliable in practical applications,particularly the joint angular velocity *** that it is not suitable to obtain the velocity signal directly from differentiating of position measurement,the low-pass filtering is commonly used,but it will definitely restrict the closed-loop bandwidth of the whole *** avoid this problem and realize better control performance,this paper proposes a novel observerbased adaptive robust controller(obARC)for a multi-joint hydraulic manipulator subjected to both parametric uncertainties and the lack of accurate velocity ***,a nonlinear adaptive observer is first designed to handle the lack of velocity measurement with the consideration of parametric ***,the adaptive robust control is developed to compensate for the dynamic uncertainties,and the close-loop system robust stability is theoretically proved under the observation and control ***,comparative experiments are carried out to show that the designed controller can achieve a performance improvement over the traditional methods,specifically yielding better control accuracy owing to the closed-loop bandwidth breakthrough,which is limited by low-pass filtering in fullstate-feedback control.

关键词： handle Observer filtering

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Optimal Scheduling of Regional Integrated Energy Systems Considering Hybrid Demand Response

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CSEE Journal of Power and Energy Systems 2024年第3期10卷 1208-1219页

作者： Ganyun lyu bin Cao Dexiang Jia Nan Wang Jun Li Guangyu Chen Department of Electrical Engineering Nanjing Institute of TechnologyNanjing 211167China State Grid Energy Research Institute Co. LTDBeijing 102209China State Grid Integrated Energy Service Group Co. LTDBeijing 100032China IEEE CSEE

Flexible load can optimize the load curve,which is an important means to promote renewable energy *** peculiarities of electricity,heat,cooling and gas loads are analyzed in this paper,considering the fuzzy degree of human perception for water temperature,and the characteristic model of hot water load is *** the fuzzy degree of human perception of ambient temperature,the characteristic model of cooling load is established by using PMV and PPD ***,considering four combinations of cut load,translatable load,transferable load and alternative load,and considering the coupling relationship of composite parts,different response models of load are established *** the minimum cost of the system,including operation and compensation costs as the objective function,the optimization scheduling model of the regional integrated energy system is established,and the Gurobi solver is used for simulation analysis to solve the optimal output and load response curve of each piece of *** results show that the load curve can be optimized,the flexible regulation ability of the regional integrated energy system can be enhanced,the energy loss of the system can be reduced,and the wind power consumption ability of the system can be increased by considering the integrated demand response.

关键词： Alternative load day ahead optimal scheduling integrated demand response PMV and PPD index regional integrated energy system

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Changes of growth-climate relationships of Smith fir forests along an altitudinal gradient

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Journal of Forestry Research 2024年第5期35卷 37-46页

作者： Jiacheng Zheng Jing Yang Hengfeng Jia Lixin lyu Jiayang Langzhen Qi-bin Zhang State Key Laboratory of Vegetation and Environmental Change Institute of BotanyChinese Academy of SciencesBeijing 100093People’s Republic of China University of Chinese Academy of Sciences Beijing 100049People’s Republic of China Linzhou Bureau of Meteorology LinzhouLhasa 851611TibetPeople’s Republic of China Institute of Plateau Ecology Tibet Agricultural and Animal Husbandry UniversityLinzhi 860000TibetPeople’s Republic of China

Temporal changes in the relationship between tree growth and climate have been observed in numerous forests across the *** patterns and the possible regu-lators(e.g.,forest community structure)of such changes are,however,not well understood.A vegetation survey and analyses of growth-climate relationships for Abies georgei ***(Smith fir)forests were carried along an altitudi-nal gradient from 3600 to 4200 m on Meili Snow Mountain,southeastern Tibetan *** results showed that the associations between growth and temperature have declined since the 1970s over the whole transect,while response to standardized precipitation-evapotranspiration indices(SPEI)strengthened in the mid-and *** between growth and vegetation data showed that tree growth was more sensitive to drought in stands with higher species richness and greater shrub *** stress on growth may be increased by heavy competition from shrub and herb *** results show the non-stationary nature of tree growth-climate associations and the linkage to for-est community *** components should be considered in future modeling and forecasting of forest dynamics in relation to climate changes.

关键词： Climate change Tree rings Altitudinal gradient Community structure Plant diversity

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Implications of the Stellar Mass Density of High-z Massive Galaxies from JWST on Warm Dark Matter

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Research in Astronomy and Astrophysics 2024年第1期24卷 128-134页

作者： Hengjie Lin Yan Gong bin yue Xuelei Chen National Astronomical Observatories Chinese Academy of SciencesBeijing 100101China University of Chinese Academy of Sciences Beijing 100049China Science Center for China Space Station Telescope National Astronomical ObservatoriesChinese Academy of SciencesBeijing 100101China Department of Physics College of SciencesNortheastern UniversityShenyang 110819China Center for High Energy Physics Peking UniversityBeijing 100871China

A significant excess of the stellar mass density at high redshift has been discovered from the early data release of James Webb Space Telescope(JWST),and it may require a high star formation ***,this will lead to large number density of ionizing photons in the epoch of reionization(EoR),so that the reionization history will be changed,which can arise tension with the current EoR *** dark matter(WDM),via the free streaming effect,can suppress the formation of small-scale structure as well as low-mass *** provides an effective way to decrease the ionizing photons when considering a large star formation efficiency in high-z massive galaxies without altering the cosmic reionization *** the other hand,the constraints on the properties of WDM can be derived from the JWST *** this work,we study WDM as a possible solution to reconcile the JWST stellar mass density of high-z massive galaxies and reionization *** find that,the JWST high-z comoving cumulative stellar mass density alone has no significant preference for either CDM or WDM *** using the observational data of other stellar mass density measurements and reionization history,we obtain that the WDM particle mass with mw=0.51_(-0.12)^(+0.22) keV and star formation efficiency parameter f_(*)^(0)> 0.39 in 2σ confidence level can match both the JWST high-z comoving cumulative stellar mass density and the reionization history.

关键词： Cosmology (cosmology:)dark matter (cosmology:)large-scale structure of universe

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