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Nano Research 2024年第9期17卷 8200-8208页

作者： Xiang cheng teng chen De Gong Pengcheng Ma Bo chen Jun Cai Aerospace Information Research Institute Chinese Academy of SciencesBeijing 100190China School of Mechanical Engineering and Automation Beihang UniversityBeijing 100191China Beijing U-Precision Tech Co. Ltd.Beijing 100176China University of Chinese Academy of Sciences Beijing 100049China

Fabric-based composites with superior mechanical properties and excellent perceptive function are highly ***,it remains a huge challenge to attain structure-function integration,especially for hybrid fabric ***,a skin-inspired interface modification strategy is proposed toward this target by constructing a hybrid smart fabric system consisting of two types of smart fabrics:carbon nanotube(CNT)/MXene-modified aramid fabrics and zinc oxide nanorod(ZnO NR)-modified carbon *** on that,flexible piezoelectric pressure sensors with skin-like hierarchical perception interfaces are fabricated,which demonstrate superb sensitivity of 2.39 V·kPa^(-1)and are capable of various wearable monitoring ***,the interface-modified hybrid fabric reinforced plastics can also be fabricated,which are proven to possess 13.6%higher tensile strength,10.1%elastic *** impressively,their average energy absorption can be improved by 111.9%,accompanied with inherent damage alert *** offers a paradigm to fabricate structure-function integrated hybrid smart fabric composites for the smart clothing and intelligent aerial vehicles.

关键词： hybrid fabrics interface modification piezoelectric pressure sensors self-diagnostic composites structure-function integration

Efficient Dynamic Locomotion of Quadruped Robot via Adaptive Diagonal Gait

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Journal of Bionic Engineering 2024年第1期21卷 126-136页

作者： Jian Bi teng chen Xuewen Rong Guoteng Zhang Guanglin Lu Jingxuan Cao Han Jiang Yibin Li The Center for Robotics School of Control Science and EngineeringShandong UniversityJi Nan 250000China

Quadruped animals in the nature realize high energy efficiency locomotion by automatically changing their gait at different *** by this character,an efficient adaptive diagonal gait locomotion controller is designed for quadruped robot.A unique gait planning method is proposed in this *** the speed of robot varies,the gait cycle time and the proportion of stance and swing phase of each leg are adjusted to form a variety of *** optimal joint torque is calculated by the controller combined with Virtual Model Control(VMC)and Whole-Body Control(WBC)to realize the desired *** gait and step frequency of the robot can automatically adapt to the change of *** experiments are done with a quadruped robot made by our laboratory to verify that the gait can change automatically from slow-trotting to flying-trot during the period when speed is from 0 to 4 m/*** ratio of swing phase is from less than 0.5 to more than 0.5 to realize the running motion with four feet off the *** have shown that the controller can indeed consume less energy when robot runs at a wide range of speeds comparing to the basic controller.

关键词： Quadruped robot Gait transition Adaptive gait Energy efficiency

NP-MBO:A newton predictor-based momentum observer for interaction force estimation of legged robots

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Biomimetic Intelligence & Robotics 2024年第2期4卷 78-85页

作者： Zhengguo Zhu Weikai Ding Weiliang Zhu Daoling Qin teng chen Xuewen Rong Guoteng Zhang School of Control Science and Engineering Shandong UniversityJinan 250061China

Swift perception of interaction forces is a crucial skill required for legged robots to ensure safe human-robot interaction and dynamic contact ***-based interactive force is widely applied due to its outstanding cross-platform *** this paper,we present a novel interactive force observer,which possesses superior dynamic tracking *** propose a dynamic cutoff frequency configuration method to replace the conventional fixed cutoff frequency setting in the traditional momentum-based observer(MBO).This method achieves a balance between rapid tracking and noise ***,to mitigate the phase lag introduced by the low-pass filtering,we cascaded a Newton Predictor(NP)after MBO,which features simple computation and *** precision analysis of this method has been *** conducted extensive experiments on the point-foot biped robot BRAVER to validate the performance of the proposed algorithm in both simulation and physical prototype.

关键词： Interaction force estimation Momentum-based observer Newton predictor Force control

Comparison of ocular biometric parameters between two swept-source optical coherence tomography devices and Scheimpflug tomography in patients with cataract

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International Journal of Ophthalmology(English edition) 2024年第8期17卷 1437-1446页

作者： Shan Ma cheng Li Jing Sun Jun Yang Kai Wen Xi-teng chen Fang-Yu Zhao Rong-Yu Gao Fang Tian Tianjin Key Laboratory of Retinal Functions and Diseases Tianjin Branch of National Clinical Research Center for Ocular DiseaseEye Institute and School of OptometryTianjin Medical University Eye HospitalTianjin 300380China Zhengda Guangming Eye Group Weifang 261000Shandong ProvinceChina Binzhou Polytechnic Binzhou 256603Shandong ProvinceChina

AIM:To assess and compare the variations and agreements across different ocular biometric parameters using swept-source optical coherence tomography(SS-OCT)and Scheimpflug tomography in patients diagnosed with ***:This prospective case series was conducted at Tianjin Medical University Eye *** total,212 eyes from 212 patients scheduled for phacoemulsification were *** were evaluated preoperatively using two SSOCT devices(IOLMaster700 and CASIA2)and Scheimpflug tomography(Pentacam).Central corneal thickness(CCT),anterior chamber depth(ACD),aqueous depth(AQD),white-to-white distance(WTW),flat simulated keratometry(Kf),steep simulated keratometry(Ks),mean keratometry(Km),and total corneal keratometry(TKm)were *** correlation coefficient(ICC),95%confidence intervals(CI)and limits of agreement(LoA)widths were conducted to assess differences and correlations between ***:All parameters,except for Ks,were significantly *** comparison revealed no significant differences between keratometry obtained by IOLMaster 700 and *** widths of all paired comparisons for Ks were>0.80 *** for WTW between IOLMaster 700 and CASIA2 and between CASIA2 and Pentacam,other Pearson’s coefficients between devices showed a strong correlation(all r>0.95).The ICC of WTW(ICC=0.438,95%CI 0.167-0.625)showed poor *** reliability of CCT,ACD,and AQD was excellent(all ICC>0.95),whereas that of TKm was good(ICC=0.827,95%CI 0.221-0.939).A significant linear correlation was also observed among ***:The ocular parameters derived from the use of IOLMaster700,CASIA2,and Pentacam exhibit significant discrepancies;as such,measurements from these devices should not be deemed as interchangeable.

关键词： ocular parameters swept-source optical coherence tomography cataract

Predicting influenza-like illness trends based on sentinel surveillance data in China from 2011 to 2019:A modelling and comparative study

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Infectious Disease Modelling 2024年第3期9卷 816-827页

作者： Xingxing Zhang Liuyang Yang teng chen Qing Wang Jin Yang Ting Zhang Jiao Yang Hongqing Zhao Shengjie Lai Luzhao Feng Weizhong Yang School of Population Medicine and Public Health Chinese Academy of Medical Sciences&Peking Union Medical CollegeBeijing100073China State Key Laboratory of Respiratory Health and Multimorbidity China Key Laboratory of Pathogen Infection Prevention and Control(Peking Union Medical College) Ministry of EducationChina National Key Laboratory of Intelligent Tracking and Forecasting for Infectious Diseases National Institute for Communicable Disease Control and PreventionChinese Center for Disease Control and PreventionChina Department of Management Science and Information System Faculty of Management and EconomicsKunming University of Science and TechnologyKunming650506China Department of Applied Mathematics&Statistics Stony Brook UniversityStony BrookNY11794-3600USA WorldPop School of Geography and Environmental ScienceUniversity of SouthamptonSouthamptonSO171BJUK

Background Influenza is an acute respiratory infectious disease with a significant global disease ***,the coronavirus disease 2019 pandemic and its related non-pharmaceutical interventions(NPIs)have introduced uncertainty to the spread of ***,comparative studies on the performance of innovative models and approaches used for influenza prediction are ***,this study aimed to predict the trend of influenza-like illness(ILI)in settings with diverse climate characteristics in China based on sentinel surveillance data using three approaches and evaluate and compare their predictive *** The generalized additive model(GAM),deep learning hybrid model based on Gate Recurrent Unit(GRU),and autoregressive moving average-generalized autoregressive conditional heteroscedasticity(ARMA—GARCH)model were established to predict the trends of ILI 1-,2-,3-,and 4-week-ahead in Beijing,Tianjin,Shanxi,Hubei,Chongqing,Guangdong,Hainan,and the Hong Kong Special Administrative Region in China,based on sentinel surveillance data from 2011 to *** relevant metrics,namely,Mean Absolute Percentage Error(MAPE),Root Mean Squared Error(RMSE),and R squared,were calculated to evaluate and compare the goodness of fit and robustness of the three *** Considering the MAPE,RMSE,and R squared values,the ARMA—GARCH model performed best,while the GRU-based deep learning hybrid model exhibited moderate performance and GAM made predictions with the least accuracy in the eight settings in ***,the models’predictive performance declined as the weeks ahead ***,blocked cross-validation indicated that all models were robust to changes in data and had low risks of *** Our study suggested that the ARMA—GARCH model exhibited the best accuracy in predicting ILI trends in China compared to the GAM and GRU-based deep learning hybrid ***,in the future,the ARMA—GARCH model may be used

关键词： Influenza-like illness Influenza Sentinel surveillance China Predicting Modeling

Effects of cross-Kerr coupling on transmission spectrum of double-cavity optomechanical system

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Chinese Physics B 2024年第6期33卷 390-396页

作者：陈立滕秦立国田立君黄接辉周南润龚尚庆 School of Mathematics Physics and StatisticsShanghai University of Engineering ScienceShanghai 201620China Department of Physics Shanghai UniversityShanghai 200444China School of Electrical Engineering Shanghai University of Engineering ScienceShanghai 201620China School of Physics East China University of Science and TechnologyShanghai 200237China

We theoretically study the transmission spectrum of the cavity field in a double-cavity optomechanical system with cross-Kerr(CK) effect. The system consists of two tunneling coupling optomechanical cavities with a mechanical resonator as a coupling interface. By doping CK medium into the mechanical resonator, CK couplings between the cavity fields and the mechanical resonator are introduced. We investigate the effects of CK coupling strength on the transmission spectrum of the cavity field, including the transmission rate, nonreciprocity and four-wave mixing(FWM). We find that the transmission spectrum of the probe field can show two obvious transparent windows, which can be widened by increasing the CK coupling strength. For the transmission between the two cavity fields, the perfect nonreciprocity and reciprocity are present and modulated by CK coupling and phase difference between two effective optomechanical couplings. In addition, the effects of the optomechanical and CK couplings on FWM show that the single peak of FWM is split into three symmetrical peaks due to the introduction of the CK effect.

关键词： cross-Kerr transmission rate nonreciprocity four-wave mixing

发展性功能视角下中小学教师绩效评价改革研究——基于东部F省的调查

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福建教育学院学报 2024年第8期25卷 107-110页

作者：陈腾藤福建教育学院福建福州350025

教师绩效评价改革进入破立并举的关键时期。为了更好起到教育评价指挥棒作用,发挥教师评价的发展性功能,通过问卷调查梳理现状,发现教师绩效评价存在评价结果未被完全接受、教师处于被动地位、评价发展性不强的问题。结合教师访谈开展分... 详细信息

教师绩效评价改革进入破立并举的关键时期。为了更好起到教育评价指挥棒作用,发挥教师评价的发展性功能,通过问卷调查梳理现状,发现教师绩效评价存在评价结果未被完全接受、教师处于被动地位、评价发展性不强的问题。结合教师访谈开展分析,教师评价工作受到教师对组织支持的需求、评价标准的适应性、教师与管理部门关系等因素的影响。建议进一步强化发展性评价内容,创新评价方法,畅通沟通机制,激发教师活力,真正实现以评促教,帮助教师发展,建设教育强国。

关键词：中小学教师教师绩效发展性评价

基于语音交互的四足机器人多模式控制实验设计

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实验室研究与探索 2024年第10期43卷 65-69,106页

作者：陈腾荣学文李贻斌山东大学控制科学与工程学院济南250061

针对四足机器人全向运动控制、步态与行为切换、人员跟随、自主导航等多模式运动中的人机交互难题,设计了1套基于语音识别与指令解析的四足机器人交互控制系统。明确了四足机器人语音交互系统的硬件组成,并搭建了包含语音采集、识别、... 详细信息

针对四足机器人全向运动控制、步态与行为切换、人员跟随、自主导航等多模式运动中的人机交互难题,设计了1套基于语音识别与指令解析的四足机器人交互控制系统。明确了四足机器人语音交互系统的硬件组成,并搭建了包含语音采集、识别、解析、播报一体的交互模块;基于SOFM网络设计了语音识别算法;基于ROS建立了语音模块与机器人运动控制模块的通信交互机制,实现了语音指令下达与机器人状态信息播报反馈。通过一系列四足机器人语音交互控制实验,验证了在动态场景下机器人的语音识别准确率高于85%,而在静态场景下则超过95%,保障了四足机器人不同运动模式的准确运动控制。

关键词：四足机器人语音交互神经网络运动控制

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法医学活体年龄推断研究前沿与挑战

法医学杂志 2024年第2期40卷 109-111页

作者：王亚辉陈腾司法鉴定科学研究院上海市法医学重点实验室司法部司法鉴定重点实验室上海市司法鉴定专业技术服务平台上海200063 西安交通大学法医学院陕西西安710061

活体年龄推断是法医临床学、法医人类学领域关注的重要研究课题,也是司法鉴定的重点和难点内容,一直以来备受国内外学者关注。2000年2月21日,最高人民检察院《关于“骨龄鉴定”能否作为确定刑事责任年龄证据使用的批复》中对于骨龄鉴定... 详细信息

活体年龄推断是法医临床学、法医人类学领域关注的重要研究课题,也是司法鉴定的重点和难点内容,一直以来备受国内外学者关注。2000年2月21日,最高人民检察院《关于“骨龄鉴定”能否作为确定刑事责任年龄证据使用的批复》中对于骨龄鉴定意见是否可以作为有效证据给出了肯定性的批复,确定了法医学骨龄鉴定(以下简称“骨龄鉴定”)的法定证据地位。骨龄鉴定在评估犯罪嫌疑人以及相关人员刑事责任能力、民事行为能力、福利权利、非法移民等方面发挥着至关重要的作用。

关键词：法医人类学年龄推断骨龄牙龄活体人工智能深度学习

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XB油田注水系统形势及优化调整措施

石油石化节能与计量 2024年第10期14卷 36-40页

作者：陈滕大庆油田有限责任公司第四采油厂黑龙江省大庆市163511

针对XB油田注水系统处理规模大、区域站库负荷低、系统间负荷不均衡的问题,提出了有针对性的优化措施。通过站库能力转换,实施系统间注水能力优化调整,合理分配注水站库能力,满足区域注水需求,实施后区域平均负荷率提高20%;对规模大、... 详细信息

针对XB油田注水系统处理规模大、区域站库负荷低、系统间负荷不均衡的问题,提出了有针对性的优化措施。通过站库能力转换,实施系统间注水能力优化调整,合理分配注水站库能力,满足区域注水需求,实施后区域平均负荷率提高20%;对规模大、负荷低的站库,打破站库水质界限,实施布局优化调整,利用规模大站库对零散站库进行功能整合,实施后两区域平均负荷率分别提高41%和13.3%,共减少用工64人。措施后可有效实现注水系统的降本增效,为油田高质量发展助力。

关键词：注水系统负荷率优化调整产能建设降本增效

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