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Dynamic event-triggered data-driven iterative learning bipartite tracking control for nonlinear MASs with prescribed performance

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Science China(Information Sciences) 2025年第1期68卷 292-305页

作者： Tao shi Wei-Wei CHE School of Mechatronic Engineering and Automation Shanghai University State Key Laboratory of Synthetical Automation for Process Industries Northeastern University College of Information Science and Engineering Northeastern University

This article proposes a distributed dynamic event-triggered data-driven iterative learning control(DET-DDILC)scheme under a predefined performance to tackle the bipartite tracking control problem for multiagent systems(MASs). An improved dynamic linearization technique is utilized to convert the nonlinear MASs into an iterative linear data model. First,a peer-to-peer mapping function is introduced to map the constrained distributed system output homeomorphism to an unconstrained one. In addition, a DET mechanism based on a time-iteration-varying function is devised to conserve network communication resources. Based on the unconstrained transformation and the designed DET mechanism, the DET-DDILC algorithm is devised to ensure that the bipartite tracking performance of MASs can be within the preset range. Finally, the effectiveness and feasibility of the designed control scheme are demonstrated via a simulation case by a comparison.

关键词： bipartite tracking control prescribed performance event-triggered iterative learning control multiagent systems

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壳聚糖杂化吴茱萸碱复合纳米粒的药动学研究

医药导报 2021年第8期40卷 1022-1025页

作者：向晓燕余忠姝谢佳希施宇涛张景勍赵华重庆医科大学药学院重庆高校药物工程研究中心重庆400016 重庆市巴南区人民医院药剂科重庆401320

目的研究吴茱萸碱(ED)和壳聚糖杂化吴茱萸碱复合纳米粒(CENP)在大鼠体内药动学特征,比较两者的生物利用度和生物等效性。方法12只雄性SD大鼠被随机分为CENP和ED两组,灌胃相应药物,采集给药后不同时间点(96 h内)的血样。血药浓度用高效... 详细信息

目的研究吴茱萸碱(ED)和壳聚糖杂化吴茱萸碱复合纳米粒(CENP)在大鼠体内药动学特征,比较两者的生物利用度和生物等效性。方法12只雄性SD大鼠被随机分为CENP和ED两组,灌胃相应药物,采集给药后不同时间点(96 h内)的血样。血药浓度用高效液相色谱(HPLC)法检测。DAS(2.1.1版)软件统计两者的药动学参数并分析其生物等效性。结果相较于ED组,CENP组的AUC(0-∞)和C max分别提高了约3.57和1.92倍,MRT(0-96 h)延长了约7.59 h。CENP和ED的t max有显著性差异,AUC(0-∞)和C max生物不等效。结论CENP提高了ED的口服生物利用度,且两者不具有生物等效性。

关键词：吴茱萸碱壳聚糖纳米粒药动学生物等效性

贮藏时间对武夷岩茶品质成分和抗氧化活性的影响

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食品科技 2020年第6期45卷 46-51页

作者：石玉涛郑淑琳李小燕翁寿龙李远华张渤武夷学院茶与食品学院茶叶福建省高校工程研究中心福建武夷山354300 武夷山市岩皇茶厂福建武夷山354300

为了探明贮藏时间对武夷岩茶品质和抗氧化活性的影响,以贮藏1年、3年、6年的武夷岩茶大红袍、水仙、肉桂为试材,分别对其感官品质、茶多酚、游离氨基酸、黄酮类等主要品质成分进行分析,并采用清除DPPH自由基能力方法评价其抗氧化活性。... 详细信息

为了探明贮藏时间对武夷岩茶品质和抗氧化活性的影响,以贮藏1年、3年、6年的武夷岩茶大红袍、水仙、肉桂为试材,分别对其感官品质、茶多酚、游离氨基酸、黄酮类等主要品质成分进行分析,并采用清除DPPH自由基能力方法评价其抗氧化活性。结果表明:随着贮藏时间的增加,武夷岩茶的感官品质有所下降;不同贮藏时间的武夷岩茶品质成分含量存在明显差异,大红袍中游离氨基酸含量随贮藏时间的增加而降低,黄酮类含量和酚氨比随贮藏时间的增加而上升;水仙中游离氨基酸含量随贮藏时间的增加而降低,酚氨比随贮藏时间的增加而上升;肉桂中茶多酚、黄酮类含量和酚氨比先升高后降低,游离氨基酸含量随贮藏时间的增加而降低。不同品种和不同贮藏时间的武夷岩茶清除DPPH自由基活性均有明显差异,抗氧化活性表现为大红袍和水仙贮藏1年>贮藏6年>贮藏3年,肉桂贮藏1年>贮藏3年>贮藏6年。

关键词：武夷岩茶贮藏时间品质成分 DPPH自由基抗氧化活性

Quantum public-key crypto via EPR pairs

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Science China(Physics,Mechanics & Astronomy) 2025年第1期Mechanics & Astronomy) .卷 58-63页

作者： Xiang-Qun Fu Hong-Wei Li Jian-Hong shi Tan Li Wan-Su Bao Henan Key Laboratory of Quantum Information and Cryptography Information Engineering University Synergetic Innovation Center of Quantum Information and Quantum Physics University of Science and Technology of China

With the development of quantum computing technology, quantum public-key cryptography is gradually becoming an alternative to the existing classical public-key cryptography. This paper designs a quantum trapdoor one-way function via EPR pairs and quantum measurements. Based on this, a new quantum public-key cryptosystem is presented, which offers forward security,and can resist the chosen-plaintext attack and chosen-ciphertext attack. Compared with the existing quantum public-key cryptos,eavesdropping can be automatically detected in this new quantum public-key cryptosystem under a necessary condition, which is also detailed in the paper.

关键词： quantum public-key crypto trapdoor one-way function EPR pairs

Mechanical Properties of Railway High-strength Manufactured Sand Concrete: Typical Lithology, Stone Powder Content and Strength Grade

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Journal of Wuhan University of Technology(Materials Science) 2025年第1期40卷 194-203页

作者： WANG Zhen LI Huajian HUANG Fali YANG Zhiqiang WEN Jiaxin shi Henan Railway Engineering Research Institute China Academy of Railway Science Corporation LimitedBeijing 100081China State Key Laboratory for Track Technology of High-Speed Railway Beijing 100081China

In order to achieve the large-scale application of manufactured sand in railway high-strength concrete structure,a series of high-strength manufactured sand concrete(HMC)are prepared by taking the manufactured sand lithology(tuff,limestone,basalt,granite),stone powder content(0,5%,10%,15%)and concrete strength grade(C60,C80,C100)as *** evolution of mechanical properties of HMC and the correlation between cubic compressive strength and other mechanical properties are *** to river sand,manufactured sand enhances the cubic compressive strength,axial compressive strength and elastic modulus of concrete,while its potential microcracks weaken the flexural strength and splitting tensile strength of *** powder content displays both positive and negative effects on mechanical properties of HMC,and the stone powder content is suggested to be less than 10%.The empirical formulas between cubic compressive strength and other mechanical properties are proposed.

关键词： manufactured sand concrete railway mechanical property lithology stone powder content

Tailor-made high elasticity and low-hysteresis hydrogels based on asymmetric H-bonding crosslinking for wearable applications

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Science China Chemistry 2025年

作者： Xiaofang shi Nan shi Miaomiao Dang Chengyu Ji Yingjie Li Peiyi Wu Zhiguo Hu Collaborative Innovation Centre of Henan Province for Green Manufacturing of Fine Chemicals Henan Engineering Laboratory of Chemical Pharmaceutical and Biomedical Materials School of Chemistry and Chemical Engineering Henan Normal University State Key Laboratory for Modification of Chemical Fibers and Polymer Materials College of Chemistry Chemical Engineering and Biotechnology & Center for Advanced Low-dimension Materials Donghua University

The conventional method of fabricating hydrogels constantly confronts the conflict between elasticity and toughness, limiting their repetitive application. Achieving the desired elasticity through a simple and low-cost approach is a significant challenge for hydrogels, particularly through rational molecular design. Here, low-hysteresis and high-toughness hydrogels are developed from the design of a new feature monomer, N-acryloylethylsemicarbazide (NACE). Based on a concept of “asymmetric Hbonding design”, the unique double and triple H-bonding of NACE can result in a novel asymmetric crosslinking polymer with alternating strong and weak H-bonding regions. The NACE is copolymerized with acrylamide (AM) to regulate the mechanical properties of hydrogel via H-bonding density. The P(NACE-AM) ionic hydrogels are obtained simply and rapidly via one-step photopolymerization without a chemical cross-linking agent. The P(NACE-AM) hydrogels combine superb mechanical elasticity and toughness, and excellent ionic conductivity, showing great potential as durable ionic conductive devices for wearable utilization.

关键词：

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基于FMVSS226法规的侧气帘优化设计

中国汽车（英文版） 2018年第11期 39-42页

作者：孙小光王居成师玉涛陈现岭长城汽车股份有限公司技术中心河北省汽车工程技术研究中心保定071000

基于美国FMVSS226法规对抛出防护的技术要求,对某款SUV车型进行了有限元分析。根据分析结果,利用DOE试验设计方法,对侧气帘进行了优化设计,并进行试验验证。验证结果表明:通过对该车型的优化设计,使该车型满足美国法规要求,为后续设计... 详细信息

基于美国FMVSS226法规对抛出防护的技术要求,对某款SUV车型进行了有限元分析。根据分析结果,利用DOE试验设计方法,对侧气帘进行了优化设计,并进行试验验证。验证结果表明:通过对该车型的优化设计,使该车型满足美国法规要求,为后续设计提供了参考。

关键词： FMVSS226 侧气帘分析优化设计

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基于正面离位乘员保护的安全气囊优化

汽车技术 2014年第11期 54-56页

作者：孙小光商恩义师玉涛杨劲松刘洋田喜凤长城汽车股份有限公司技术中心河北省汽车工程技术研究中心

基于美国FMVSS208法规中对离位测试的要求,对某轿车进行了驾驶员侧第5百分位女性假人静态离位测试。测试结果显示,乘员颈部伤害严重超标,不能满足法规要求。引入颈部作用力分解法,在对假人颈部伤害进行分析的基础上提出优化策略,并进行... 详细信息

基于美国FMVSS208法规中对离位测试的要求,对某轿车进行了驾驶员侧第5百分位女性假人静态离位测试。测试结果显示,乘员颈部伤害严重超标,不能满足法规要求。引入颈部作用力分解法,在对假人颈部伤害进行分析的基础上提出优化策略,并进行试验验证。验证结果表明,该车满足FMVSS208法规要求,优化设计提升了该车型乘员离位保护性能。

关键词：安全气囊优化正面离位乘员保护

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织构参数对不锈钢与猪股骨间摩擦性能的影响

润滑与密封 2019年第9期44卷 102-106页

作者：史于涛胡亚辉郑清春张春秋李向军天津市先进机电系统设计与智能控制重点实验室天津300384 机电工程国家级实验教学示范中心(天津理工大学) 天津300384

采用YLP-F20激光打标机在4Cr13不锈钢圆盘试件表面加工出不同尺寸的沟槽微织构试样;将织构试样与新鲜猪股骨制成的骨棒试样构成销-盘摩擦副,在立式万能摩擦磨损试验机上进行摩擦磨损试验,研究微织构参数对不锈钢与猪股骨在生理盐水润滑... 详细信息

采用YLP-F20激光打标机在4Cr13不锈钢圆盘试件表面加工出不同尺寸的沟槽微织构试样;将织构试样与新鲜猪股骨制成的骨棒试样构成销-盘摩擦副,在立式万能摩擦磨损试验机上进行摩擦磨损试验,研究微织构参数对不锈钢与猪股骨在生理盐水润滑下的摩擦特性的影响。结果表明:沟槽型的摩擦因数比无沟槽的要小,在文中研究的范围内摩擦因数随着沟槽宽度的增加而减小,随着沟槽间角度的增加而增加;对加工微织构后的表面进行处理对摩擦因数的影响很大。文中研究范围内宽度200μm、深度20μm、角度1.21°微织构组合,相比较于无微织构试件摩擦因数最大降低了36.4%。

关键词：微沟槽参数皮质骨 4Cr13不锈钢摩擦磨损摩擦因数