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Adaptive fuzzy asymptotic control design for MIMO nonlinear systems with state constraints

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Journal of Control and Decision 2023年第4期10卷 610-623页

作者： Yongchao Liu Bowen Zeng Qidan zhu lipeng Wang Institute of Complexity Science School of AutomationQingdao UniversityQingdaoPeople’s Republic of China Shandong Key Laboratory of Industrial Control Technology QingdaoPeople’s Republic of China College of Intelligent Systems Science and Engineering Harbin Engineering UniversityHarbinPeople’s Republic of China

This paper addresses the asymptotic control problem of uncertain multi-input and multi-output(MIMO)nonlinear *** considered MIMO systems contain unknown virtual control coefficients(UVCCs)and state *** Lyapunov function by associating with the lower bounds of UVCCs is presented to counteract the adverse effect deriving from *** state constraints are ensured by utilising the barrier Lyapunov ***,the asymptotic tracking controller is recursively constructed by combining the backstepping technique with fuzzy logic *** remarkable character of the designed controller is that the asymptotic tracking performance can be achieved by introducing some smooth functions into adaptive backstepping *** contrast to the existing results,the conditions on the UVCCs are ***,the new control design is illustrated by a practical example.

关键词： Asymptotic tracking control state constraints bound estimation method nonlinear systems

An Efficient Certificateless Aggregate Signature Scheme Designed for VANET

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Computers, Materials & Continua 2020年第5期63卷 725-742页

作者： Cui Li Gang Wu lipeng Xing Feng zhu Liang Zhao College of Information and Communication National University of Defense TechnologyXi’anChina Ansys Southpointe 2600 ANSYS Drive CanonsburgCommonwealth of Pennsylvania15317USA

The Vehicular Ad-hoc Network(VANET)is the fundamental of smart transportation system in the future,but the security of the communication between vehicles and vehicles,between vehicles and roadside infrastructures have become increasingly *** aggregate signature protocol is used to address this security issue,but the existing schemes still have many drawbacks in terms of security and efficiency:First,many schemes are not secure,and signatures can be forged by the attacker;Second,even if some scheme are secure,many schemes use a large number of bilinear pairing operation,and the computation overhead is *** the same time,the length of the aggregated signature also increases linearly with the increase of user numbers,resulting in a large communication *** order to overcome the above challenges,we propose a new certificateless aggregate signature scheme for VANET,and prove the security of the scheme under the random oracle *** new scheme uses pseudonym to realize the conditional privacy protection of the vehicle’s *** new scheme does not use bilinear pairing operation,and the calculation efficiency is *** the same time,the length of the aggregate signature of the new scheme is constant,thereby greatly reducing the communication and storage *** analysis results demonstrate that the new scheme is not only safer,but also superior in performance to the recent related schemes in computation overhead and communication cost.

关键词： Vehicular Ad-hoc network certificateless cryptography aggregate signature random oracle model

Pre-Processing,Quality Assurance,and Use of Global Atmospheric Motion Vector Observations in CRA

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Journal of Meteorological Research 2022年第6期36卷 947-962页

作者： Minyan WANG Shuang YAO lipeng JIANG Tao ZHANG Chunxiang SHI Ting zhu National Meteorological Information Centre China Meteorological AdministrationBeijing 100081 CMA Earth System Modeling and Prediction Centre China Meteorological Administration(CMA)Beijing 100081

Assimilation of atmospheric motion vectors(AMVs)is important in the initialization of the atmospheric state in numerical weather prediction models,especially over oceans and at high latitudes where conventional data are *** paper presents a detailed description of the pre-processing,quality assurance,and use of global AMVs in China’s first generation of the 40-yr(1979-2018)CRA global atmospheric reanalysis product.A new AMV archive is integrated from near real-time operational Global Telecommunication System data and reprocessed AMV datasets released or produced mainly during 2014-2016 according to a priority *** avoid the misuse of data with systematic quality problems,the observations of all 18 types of AMVs from 54 satellites are pre-evaluated over the whole time *** pre-evaluation system developed by the CRA team is based on the NCEP Gridpoint Statistical Interpolation(GSI)three-dimensional variational assimilation system and the ERA-Interim reanalysis *** AMVs in the new AMV archive are denser than the AMVs prepared for the Climate Forecast System Reanalysis product,the bias and root-mean-square values are smaller,and the time series are *** new AMV archive is assimilated in the CRA product based on the NCEP GSI assimilation procedure and quality control configuration with reference to the pre-evaluation *** is the first time that the reprocessed AMVs from Fengyun-2 satellites from June 2005 to July 2017 are assimilated in a reanalysis *** assimilation features inspire confidence in the accuracy and stability of these *** mean root-mean-square values of the observation minus analysis infrared,water vapor,and visible AMV were 1.5-3.4,2.7-3.6,and 1.3-2.1 m s-1,*** experience of integrating,pre-evaluating,and assimilating AMV observations is valuable for the next generation of reanalysis products.

关键词： reanalysis CRA(China’s first generation of 40-yr global atmospheric ReAnalysis product) atmospheric motion vector integration assimilation reprocessed data

改良金属导尿管联合输尿管导管在老年男性导尿困难中的应用

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甘肃医药 2018年第12期37卷 1106-1107页

作者：石磊张海河张强元朱丽芃王兴龙杨立张掖市第二人民医院甘肃张掖734000 嘉峪关市第一人民医院甘肃嘉峪关735000 兰州大学第二医院甘肃兰州730000

目的:探讨导尿困难老年男性应用改良金属导尿管联合输尿管导管的效果。方法:收集嘉峪关市第一人民医院泌尿外科2007年1月至2017年1月78例老年男性导尿困难者,采用改良金属导尿管联合输尿管导管导尿,观察导尿效果。结果:采用改良金属导... 详细信息

目的:探讨导尿困难老年男性应用改良金属导尿管联合输尿管导管的效果。方法:收集嘉峪关市第一人民医院泌尿外科2007年1月至2017年1月78例老年男性导尿困难者,采用改良金属导尿管联合输尿管导管导尿,观察导尿效果。结果:采用改良金属导尿管导管联合输尿管导管导尿,78例患者均一次导尿成功,没有副损伤发生,拔除导尿管后恢复到尿潴留前的排尿状况,随访3月患者无尿道狭窄。结论:对老年男性导尿困难者可采用改良金属导尿管联合输尿管导管进行导尿,减少副损伤,提高导尿成功率。

关键词：改良金属导尿管输尿管导管导尿

基于执行计划的Oracle SQL优化策略分析

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电工技术 2024年第16期 217-219,223页

作者：孟元朱林超郝井勋钱立鹏安徽南瑞中天电力电子有限公司安徽合肥230011

探讨基于执行计划的Oracle SQL优化策略,通过对执行计划的详细分析,帮助DBA和开发人员了解如何通过选择适当的优化技术和策略来改善查询性能。介绍了从基本的索引设计到高级的优化器提示等优化策略的多个方面,有助于相关人员在实际应用... 详细信息

探讨基于执行计划的Oracle SQL优化策略,通过对执行计划的详细分析,帮助DBA和开发人员了解如何通过选择适当的优化技术和策略来改善查询性能。介绍了从基本的索引设计到高级的优化器提示等优化策略的多个方面,有助于相关人员在实际应用中更好地理解和应用SQL查询优化的原则。

关键词：数据库管理优化策略执行效率

山东省沿黄地区规模化牛场全株玉米青贮发酵品质及营养价值评价

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黑龙江畜牧兽医 2024年第15期 78-83,98页

作者：魏立鹏郭艺璇程群徐进栋程明林英庭朱风华青岛农业大学动物科技学院山东青岛266109 青岛农业大学理学与信息科学学院山东青岛266109 青岛市畜牧兽医研究所山东青岛266100

为了评定山东省沿黄地区全株玉米青贮发酵品质和营养价值,以了解规模化牛场青贮玉米的制作现状,试验于2023年3—5月份分别采集沿黄地区滨州市、东营市、德州市、菏泽市、济宁市、济南市、聊城市、泰安市、淄博市的规模化奶牛场(51个)和... 详细信息

为了评定山东省沿黄地区全株玉米青贮发酵品质和营养价值,以了解规模化牛场青贮玉米的制作现状,试验于2023年3—5月份分别采集沿黄地区滨州市、东营市、德州市、菏泽市、济宁市、济南市、聊城市、泰安市、淄博市的规模化奶牛场(51个)和肉牛场(54个)全株玉米青贮饲料样品共105份,测定样品的发酵品质和营养成分,参照《青贮玉米品质分级》(GB/T 25882—2010)对全株玉米青贮品质进行分级。结果表明:淄博市全株玉米青贮中乳酸含量显著高于其他市(P0.05)。泰安市全株玉米青贮饲料品质为一级;济南市、聊城市、滨州市为二级;淄博市、济宁市、德州市、东营市和菏泽市为三级。说明沿黄地区全株玉米青贮饲料品质良好。

关键词：山东省沿黄地区全株青贮玉米发酵品质营养价值

Photo-triggered nucleus targeting for cancer drug delivery

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Nano Research 2021年第8期14卷 2630-2636页

作者： Yafei Li Wen Lv Lang Wang Yarning Zhang lipeng Yang Tianyi Wang Linyong zhu Yufeng Wang Weiping Wang Department of Pharmacology and Pharmacy Li Ka Shing Faculty of MedicineThe University of Hong KongHong KongChina Dr.Li Dak-Sum Research Centre The University of Hong KongHong KongChina Department of Chemistry The University of Hong Kong Hong Kong China School of Chemistry and Molecular Engineering East China University of Science and Technology Shanghai 200030China

Here,we report a strategy to deliver drug nanoparticles into cells with nucleus-targeting ability under a spatiotemporal *** nanoparticles were constructed through self-assembly of photoresponsive prodrugs and free *** incorporating a nucleus localization sequence in the system,drug nanoparticles could be delivered into nuclei upon visible light *** drug nanoparticles showed high drug loading capacity and specific nucleus-targeting ability,which efficiently killed cancer *** self-assembly strategy could be applied to other hydrophobic drugs and targeting ligands for photo-controlled organelle-targeted drug delivery.

关键词： phototargeting dePEGylation nucleus targeting coumarin photoresponsive prodrugs

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透空管式防波堤波浪透射系数的试验研究

港口航道与近海工程 2024年第4期61卷 1-6页

作者：杨立鹏杨少鹏张芝永朱金龙那婧青岛市运输事业发展中心山东青岛266100 山东科技大学海洋科学与工程学院山东青岛266590 浙江省水利河口研究院浙江杭州310020 山东省海洋资源与环境研究院山东烟台264006 大连海阳渔业工程规划设计研究有限公司辽宁大连116000

采用物理模型试验,本文对透空管式防波堤的消浪效果进行了研究。以透射系数Kt为主要参数,探讨透射系数Kt随堤顶宽度B、坡度m、管径D等结构参数及波浪要素的变化规律。结果显示,透射系数Kt随相对堤顶宽度B/L、波陡H/L、相对水深h/L的增... 详细信息

采用物理模型试验,本文对透空管式防波堤的消浪效果进行了研究。以透射系数Kt为主要参数,探讨透射系数Kt随堤顶宽度B、坡度m、管径D等结构参数及波浪要素的变化规律。结果显示,透射系数Kt随相对堤顶宽度B/L、波陡H/L、相对水深h/L的增加而减小,当相对堤顶宽度B/L大于0.3、波陡H/L大于0.06、相对水深h/L大于0.3时,透射系数Kt均显著减小并逐渐趋于稳定,波浪的消减作用比较明显;透射系数Kt随防波堤坡度m的增加而增大,当坡度m=1:1.5时,防波堤消浪效果较好;组合管径结构型式的消浪效果明显优于单一管径;通过与透空水平板式结构对比发现,相同工况下,透空管式结构的消波效果较好。

关键词：透空管式防波堤透射系数结构参数规则波

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黄土地区深埋厅台分离地铁车站关键技术

低温建筑技术 2024年第5期46卷 133-137,142页

作者：周丁恒朱振烈侯可军闫立鹏高生苗侯春山中铁第五勘察设计院集团有限公司北京102600 中国石油工程建设有限公司北京100120

深埋厅台分离地铁车站施工工序转换多,施工变形和受力体系复杂。为明晰复杂环境条件下深埋厅台分离地铁车站施工关键技术,以某地铁15#线航东区间为工程背景,阐述了新增的SZⅡ路站竖井横通道、暗挖主体隧道、明挖站厅、扶梯斜通道等重点... 详细信息

深埋厅台分离地铁车站施工工序转换多,施工变形和受力体系复杂。为明晰复杂环境条件下深埋厅台分离地铁车站施工关键技术,以某地铁15#线航东区间为工程背景,阐述了新增的SZⅡ路站竖井横通道、暗挖主体隧道、明挖站厅、扶梯斜通道等重点工序,并采用三维数值分析手段,分析了不同施工步下站台层结构位移变化特征。结果表明深埋车站条件下,适合修建明暗挖结合的厅台分离车站,从而降低施工风险和工程造价;厅台分离车站施工工序多、转换复杂,不同结构接口位置是施工控制的关键;站厅层施工对站台层结构位移分布状态存在明显影响,扶梯斜通道对站台层存在局部影响。所得结论可为类似条件下加站提供借鉴与参考。

关键词：黄土地层厅台分离明暗挖结合设计施工三维数值分析