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一种上肢康复机器人肩关节减速器的传动精度分析及优化

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机械传动 2024年第7期48卷 137-142页

作者：邹帅东王光建谢光辉侯景明杨仁强孙凡惟重庆电子科技职业大学智慧健康学院重庆401331 陆军军医大学西南医院康复科重庆400038 重庆大学高端装备机械传动全国重点实验室重庆400044 新西兰奥克兰大学工学院奥克兰0632

基于上肢康复机器人的肩关节相对于其他上肢关节误差敏感性高及承载大的特点,采用一种渐开线少齿差行星减速器应用于其肩关节传动。考虑加工装配误差是造成传动误差的主要因素,运用啮合线增量法建立少齿差行星减速器传动误差的解析计算... 详细信息

基于上肢康复机器人的肩关节相对于其他上肢关节误差敏感性高及承载大的特点,采用一种渐开线少齿差行星减速器应用于其肩关节传动。考虑加工装配误差是造成传动误差的主要因素,运用啮合线增量法建立少齿差行星减速器传动误差的解析计算模型;从统计学角度出发,采用蒙特卡洛法分析了偏心误差及其初始相位对上肢康复机器人肩关节传动精度的影响;基于肩关节传动精度解析模型,分析了传动误差造成的输出力矩波动;并在加工及装配精度不变的情况下,针对少齿差齿轮副各零件的偏心误差初始相位,采用粒子群优化算法进行传动精度优化,以改善上肢康复机器人肩关节传动精度及其造成的输出力矩波动,减少上肢康复患者可能由此造成的二次损伤。

关键词：上肢康复机器人肩关节减速器传动精度力矩波动

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Photoluminescence and defect evolution of nano-ZnO thin films at low temperature annealing

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Science China(Technological Sciences) 2013年第1期56卷 25-31页

作者： YANG AiLing YANG Yun ZHANG ZhenZhen BAO XiChang YANG renqiang LI ShunPin SUN Liang Department of Physics Ocean University of China Qingdao Institute of Bioenergy & Bioprocess Technology Chinese Academy of Sciences

Nano-ZnO thin films composed of nanoparticles with sizes of 10-16 nm on silicon substrates at low temperature were prepared by sol-gel *** placing the nano-ZnO thin films at room temperature or annealing at 100°C in air for 10 h intermittently,within a total 70 h annealing time,the evolution of PL spectra of the nano-ZnO thin films were studied in *** the annealing time increases,the PL peaks shift from violet to blue and green *** PL peaks at violet and blue bands decrease with the annealing time,but the PL peaks at green band are *** PL spectra are related to the defects in the nano-ZnO thin *** PL peaks positioned at 430 nm are mainly related to defects of zinc interstatials(Zni),oxygen vacancies and(Vo);the ones at 420 nm to oxygen interstitials(Oi),Zinc vacancies(Vzn),Zni ;and the ones at 468 nm to Vzn,Zni,and charged oxygen interstatials(Vo+).The green luminescence is related to Oi,Vo and *** evolutions of PL spectra and the defects are also related to the concentrations of Zn in the thin films,the thicknesses of the films and the annealing *** the films with 0.5 M and 1.0 M Zn concentrations,after 20 h and 30 h annealing in air at 100°C,respectively,either placing them in air at room temperature or continuing anneal in air at 100°C,the PL spectra are *** the low temperature annealing,Zni decreases with the annealing time,and Oi *** Oi favors to keep the nano-ZnO thin films *** result is important to nano-ZnO thin films as electron transport layers in inverted or tandem organic solar cells.

关键词： nano-ZnO thin films low temperature annealing PL spectra defects

一种单阶段无监督可见光-红外跨模态行人重识别方法

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计算机科学 2024年第S1期51卷 528-534页

作者：娄刃和任强赵三元郝昕周跃琪汪心渊李方芳浙江省交通运输科学研究院杭州310000 北京理工大学计算机学院北京100081 北京理工大学长三角研究院(嘉兴) 浙江嘉兴314011 浙江交投高速公路运营管理有限公司企业研究院杭州310000

无监督“可见光-红外”跨模态行人重识别任务能够缓解智能监控场景中需要大量人工标注的问题。常见多阶段模型用于处理不同模态数据。文中提出了一种有效的单阶段无监督跨模态行人重识别的方法,设计了基于置信因子的聚类算法和图嵌入的... 详细信息

无监督“可见光-红外”跨模态行人重识别任务能够缓解智能监控场景中需要大量人工标注的问题。常见多阶段模型用于处理不同模态数据。文中提出了一种有效的单阶段无监督跨模态行人重识别的方法,设计了基于置信因子的聚类算法和图嵌入的跨模态特征处理方法,分别用于解决无标签问题和跨模态问题。实验结果表明,相较于现有算法,所提方法在r=1时精度至少取得了7%的提高。

关键词：跨模态学习无监督行人重识别可见光-红外行人重识别无监督学习跨模态特征处理

A seven-gene-deleted African swine fever virus is safe and effective as a live attenuated vaccine in pigs

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Science China(Life Sciences) 2020年第5期63卷 623-634页

作者： Weiye chen Dongming Zhao Xijun He renqiang Liu Zilong Wang Xianfeng Zhang Fang Li Dan Shan Hefeng chen Jiwen Zhang Lulu Wang Zhiyuan Wen Xijun Wang Yuntao Guan Jinxiong Liu Zhigao Bu State Key Laboratory of Veterinary Biotechnology Harbin Veterinary Research InstituteChinese Academy of Agricultural SciencesHarbin 150001China National High Containment Laboratory for Animal Diseases Control and Prevention Harbin 150069China

African swine fever(ASF)is a devastating infectious disease in swine that is severely threatening the global pig *** efficacious vaccine is urgently ***,we used the Chinese ASFV HLJ/18 as a backbone and generated a series of genedeleted *** virulence,immunogenicity,safety,and protective efficacy evaluation in specific-pathogen-free pigs,commercial pigs,and pregnant sows indicated that one virus,namely HLJ/18-7GD,which has seven genes deleted,is fully attenuated in pigs,cannot convert to the virulent strain,and provides complete protection of pigs against lethal ASFV *** study shows that HLJ/-18-7GD is a safe and effective vaccine against ASFV,and as such is expected to play an important role in controlling the spread of ASFV.

关键词： African swine fever vaccine safety protective efficacy pig

Immunogenicity of a recombinant VSV-Vectored SARS-CoV vaccine induced robust immunity in rhesus monkeys after single-dose immunization

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Virologica Sinica 2022年第2期37卷 248-255页

作者： Dan Shan Xiaoyan Tang renqiang Liu Dan Pan Xijun Wang Jinying Ge Zhiyuan Wen Zhigao Bu State Key Laboratory of Veterinary Biotechnology Harbin Veterinary Research InstituteChinese Academy of Agricultural SciencesHarbin150069China Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses Yangzhou UniversityYangzhou225127China

Severe acute respiratory syndrome(SARS)is a highly contagious zoonotic disease caused by SARS coronavirus(SARS-Co V).Since its outbreak in Guangdong Province of China in 2002,SARS has caused 8096 infections and774 deaths by December 31st,*** there have been no more SARS cases reported in human populations since 2004,the recent emergence of a novel coronavirus disease(COVID-19)indicates the potential of the recurrence of SARS and other coronavirus disease among ***,developing a rapid response SARS vaccine to provide protection for human populations is still ***(S)protein of SARS-Co V can induce neutralizing antibodies,which is a pivotal immunogenic antigen for vaccine *** we constructed a recombinant chimeric vesicular stomatitis virus(VSV)VSVΔG-SARS,in which the glycoprotein(G)gene is replaced with the SARS-Co V S ***ΔG-SARS maintains the bullet-like shape of the native VSV,with the heterogeneous S protein incorporated into its surface instead of G *** results of safety trials revealed that VSVΔG-SARS is safe and effective in mice at a dose of 1×10^(6)TCID_(50).More importantly,only a single-dose immunization of 2×10^(7)TCID_(50)can provide high-level neutralizing antibodies and robust T cell responses to non-human primate animal ***,our data indicate that VSVΔG-SARS can be used as a rapid response vaccine *** study on the recombinant VSV-vectored SARS-Co V vaccines can accumulate experience and provide a foundation for the new coronavirus disease in the future.

关键词： Severe acute respiratory syndrome coronavirus(SARS-CoV) Vesicular stomatitis virus(VSV) Vaccine Immunization

Advances in the Researches of the Middle and Upper Atmosphere in China

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空间科学学报 2018年第5期38卷 763-780页

作者： chen Zeyu chen Hongbin XU Jiyao L Daren ZHANG Shaodong XUE Xianghui TIAN Wenshou LIU renqiang chen Wen HU Yongyun WANG Rui HU Dingzhu HU Xiong YANG Guotao GONG Yun LU Gaopeng Key Laboratory of Middle Atmosphere and Global Environment Observation Institute of Atmospheric Physics Chinese Academy of Sciences Beijing 100029 National Space Science Center Chinese Academy of Sciences Beijing 100190 School of Electronic

In this paper we summarize the research results by Chinese scientists in 2016–2018. The focuses are placed on the researches of the middle and upper atmosphere, specifically the researches associated with groundbased observation capability development, dynamical processes, and properties of circulation and chemistryclimate coupling of the middle atmospheric layers.

关键词：中国科学家空气能力开发

ON CULTURE TEACHING IN ELT

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中国英语教学：英文版 2004年第1期27卷 51-54,48,127页

作者： renqiang HebeiTeachersUniversity

The research of culture teaching in ELT refers mainly tothree aspects: the necessity to teach, what to teach and how toteach. This article reviews briefly the process of development ofcultural studies and introduces the relation between culture andELT, indicating the importance of culture teaching in ELT inChina. It also states the contents of cultural communicationinformation, analyses some pragmatic errors that may appear,and further expounds that the final objective is to achieve thelanguage acquisition of English-learners through cultureteaching. In the early stage of language teaching, under theinfluence of formalism and structuralism, cultural studies wererestricted to the edge of English language teaching, and theresearch of linguistics and literature developed respectively intwo relatively parallel lines. Later, anthropology and sociologybegan to influence linguistic theory and language *** the 1990s, cultural studies have been discussed morefrequently, and there is regained interest and understanding inEnglish language teaching and research. Our English languagecurriculum has especially accepted culture teaching as one of theobjectives in language teaching.

关键词：英语教学文化教学文化差异语言理解

Agricultural expansion in Yunnan Province and its environmental consequences

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Chinese Science Bulletin 2006年第B11期51卷 136-142页

作者： LI renqiang DONG Ming PENG Hua ZHANG Lili CUI Qingguo HE Weiming Laboratory of Quantitative Vegetation Ecology Institute of BotanyChinese Academy of Sciences Beijing 100093 China Graduate University of Chinese Academy of Sciences Beijing 100039 China Kunming Institute of Botany Chinese Academy of Sciences Kunming 650024 China

Yunnan Province with numerous international rivers has huge impacts on downstream countries such as Burma, Laos and Vietnam. Agricultural expansion in Yunnan has conferred and continues to confer detrimental impacts on environments. In the past 43 years (1960-2003), the increase in crop yield was associated with a 99.1-fold increase in fertilizers, 2.0-fold in pesticides, and 0.4-fold in cultivated lands, respectively. Based on linear regression of the past trend, the next doubling of crop yield in the future would be accompanied by the increase in fertilizer application (from about 1.3x10(9) kg to 3.6x10(9) kg), and the increase in application of pesticides (from about 2.7x10(7) kg to 9.6x10(7) kg). Similarly, the total amount of cultivated lands would increase from about 5.9x10(6) ha to 9.3x10(6) ha. In the past decades, these changes have caused a series of environmental problems such as agricultural non-point source pollution (ANSP), deforestation, land degradation, and biodiversity loss. If the escalating status continues as our prediction, those problems would get worse and be tough to be dealt with. As for the situation in this region, some practices to minimize the impacts should be implemented in controlling population growth, protecting wetlands, developing tourism, and utilizing fertilizers and pesticides more rationally.

关键词：农业扩展农作物收率环境分析肥料使用杀虫剂使用

Geochemistry of subducted metabasites exhumed from the Mariana forearc:Implications for Pacific seamount subduction

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Geoscience Frontiers 2021年第3期12卷 358-369页

作者： Jianghong Deng Lipeng Zhang He Liu Haiyang Liu renqiang Liao Abdul Shakoor Mastoi Xiaoyong Yang Weidong Sun Center of Deep Sea Research Institute of OceanologyCenter for Ocean Mega-ScienceChinese Academy of SciencesQingdao 266071China Laboratory for Marine Mineral Resources Qingdao National Laboratory for Marine Science and TechnologyQingdao 266237China CAS Key Laboratory of Crust-Mantle Materials and Environments University of Science and Technology of ChinaHefei 230026China University of Chinese Academy of Sciences Beijing 100049China Centre for Pure and Applied Geology University of SindhJamshoro 76080Pakistan

Seamounts on the drifting oceanic crust are inevitably carried by plate motions and eventually accreted or ***,the geochemical signatures of the subducted seamounts and the significance of seamount subduction are not well *** of seamounts have subducted beneath the Philippine Sea Plate following the westward subduction of the Pacific Plate since the Eocene(~52 Ma).The subducted oceanic crust and seamount materials can be exhumed from the mantle depth to the seafloor in the Mariana forearc region by serpentinite mud volcanoes,providing exceptional opportunities to directly study the subducted oceanic crust and *** International Ocean Discovery Program(IODP)expedition 366 has recovered a few metamorphosed mafic clasts exhumed from the Mariana forearc serpentinite mud volcanoes,e.g.,the Fantangis?a and Asùt Tesoru *** mafic clasts have tholeiitic to alkaline affinities with distinct trace elements and Nd-Hf isotopes characteristics,suggesting different provenances and mantle *** tholeiites from the Fantangisna Seamount have trace element characteristics typical of mid-ocean ridge *** Pacific-type Hf-Nd isotopic compositions,combined with the greenschist metamorphism of these tholeiites further suggest that they came from the subducted Pacific oceanic *** alkali basalts-dolerites from the Fantangisna and Asùt Tesoru seamounts show ocean island basalt(OIB)-like geochemical *** OIB-like geochemical signatures and the low-grade metamorphism of these alkali basalts-dolerites suggest they came from subducted seamounts that originally formed in an intraplate setting on the Pacific *** Pacific Plate origin of these metabasites suggests they were formed in the Early Cretaceous or *** types of OIBs have been recognized from alkali metabasites,one of which is geochemically similar to the HIMU-EMI-type OIBs from the West Pacific Seamount Province,and another is similar to the EM

关键词： IODP 366 Mariana convergent margin Forearc Seamount subduction OIB