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Relative dynamics estimation of non-cooperative spacecraft with unknown orbit elements and inertial tensor

Chinese Journal of Aeronautics 2016年第2期29卷 479-491页

作者： Yu Han Zhang Xiujie liu lingyu Wang Shuo Song Shenmin Beijing Institute of Astronautical Systems Engineering Beijing 100076 China center for control theory and guidance technology harbin institute of technology Harbin 150001 China Academy of Fundamental and Interdisciplinary Science Harbin Institute of Technology Harbin 150001 China

The state estimation for relative motion with respect to non-cooperative spacecraft in ren- dezvous and docking （RVD） is a challenging problem. In this paper, a completely non-cooperative case is considered, which means that both orbit elements and inertial tensor of target spacecraft are unknown. By formulating the equations of relative translational dynamics in the orbital plane of chaser spacecraft, the issue of unknown orbit elements is solved. And for the problem for unknown inertial tensor, we propose a novel robust estimator named interaction cubature Kalman filter （InCKF） to handle it. The novel filter consists of multiple concurrent CKFs interlacing with a max- imum a posteriori （MAP） estimator. The initial estimations provided by the multiple CKFs are used in a Bayesian framework to form description of posteriori probability about inertial tensor and the MAP estimator is applied to giving the optimal estimation. By exploiting special property of spherical-radial （SR） rule, a novel method with respect to approximating the likelihood probability of inertial tensor is presented. In addition, the issue about vision sensor＇s location inconformity with center mass of chaser spacecraft is also considered. The performance of this filter is demonstrated by the estimation problem of RVD at the final phase. And the simulation results show that the perfor- mance of InCKF is better than that of extended Kalman filter （EKF） and the estimation accuracy of oose and attitude is relatively high even in the comoletely non-coooerative case.

关键词： Cubature Kalman filter MAP estimator Non-cooperative spacecraft Relative motion Stereo vision

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EXISTENCE AND UNIQUENESS OF THE POSITIVE STEADY STATE SOLUTION FOR A LOTKA-VOLTERRA PREDATOR-PREY MODEL WITH A CROWDING TERM

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Acta Mathematica Scientia 2020年第6期40卷 1961-1980页

作者： Xianzhong ZENG lingyu liu Weiyuan XIE School of Mathematics and Computing Science Hunan University of Science and TechnologyXiangtan 411201China

This paper deals with a Lotka-Volterra predator-prey model with a crowding term in the predator *** obtain a critical value λ1^D(Ω0),and demonstrate that the existence of the predator inΩ0 only depends on the relationship of the growth rateμof the predator and λ1^D(Ω0),not on the ***,whenμ<λ1^D(Ω0),we obtain the existence and uniqueness of its positive steady state solution,while whenμ≥λ1^D(Ω0),the predator and the prey cannot coexist inΩ*** results show that the coexistence of the prey and the predator is sensitive to the size of the crowding regionΩ0,which is different from that of the classical Lotka-Volterra predator-prey model.

关键词： Lotka-Volterra predator-prey model crowding term critical value coexistence

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Concomitant transverse myelitis and Guillain-Barré syndrome following varicella-zoster virus infection

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Chinese Medical Journal 2023年第10期136卷 1256-1257页

作者： Danmei Lan lingyu liu Department of Neurorehabilitation Shanghai YangZhi Rehabilitation Hospital(Shanghai Sunshine Rehabilitation Center)School of MedicineTongji UniversityShanghai 201619China

To the Editor:Currently known syndromes of acute post-infectious or inflammatory demyelination include acute disseminated encephalomyelitis,encephalitis,transverse myelitis(TM),and Guillain–Barrésyndrome(GBS).Demyelination is frequently limited to the central or peripheral nervous *** coexistence of myelitis and demyelinating peripheral neuropathy has only been reported in a few children[1,2]and young adults.[3]Also,concomitant TM and GBS in elderly immunocompetent patients has been rarely described.

关键词： Barr zoster encephalitis

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Therapeutic robots for post-stroke rehabilitation

Medical Review

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Medical Review 2024年第1期4卷 55-67页

作者： Ronghua Hong Bingyu Li Yunjun Bao lingyu liu Lingjing Jin Neurotoxin Research Center Key Laboratory of Spine and Spinal Cord Injury Repair and Regeneration of Ministry of EducationDepartment of NeurologyTongji HospitalSchool of MedicineTongji UniversityShanghaiChina Department of Neurology and Neurological Rehabilitation Shanghai Disabled Persons’Federation Key Laboratory of Intelligent Rehabilitation Assistive Devices and TechnologiesYangzhi Rehabilitation Hospital(Shanghai Sunshine Rehabilitation Center)School of MedicineTongji UniversityShanghaiChina Department of Neurology and Neurological Rehabilitation Shanghai Disabled Persons’Federation Key Laboratory of Intelligent Rehabilitation Assistive Devices and TechnologiesYangzhi Rehabilitation Hospital(Shanghai Sunshine Rehabilitation Center)School of MedicineTongji UniversityShanghai 200092China Neurotoxin Research Center Key Laboratory of Spine and Spinal Cord Injury Repair and Regeneration of Ministry of EducationDepartment of NeurologyTongji HospitalSchool of MedicineTongji UniversityShanghai 200092China Collaborative Innovation Center for Brain Science Tongji UniversityShanghai 200092China

Stroke is a prevalent,severe,and disabling healthcare issue on a global scale,inevitably leading to motor and cognitive *** has become one of the most significant challenges in China,resulting in substantial social and economic *** addition to the medication and surgical interventions during the acute phase,rehabilitation treatment plays a crucial role in stroke *** technology takes distinct advantages over traditional physical therapy,occupational therapy,and speech therapy,and is increasingly gaining popularity in post-stroke *** use of rehabilitation robots not only alleviates the workload of healthcare professionals but also enhances the prognosis for specific stroke *** review presents a concise overview of the application of therapeutic robots in poststroke rehabilitation,with particular emphasis on the recovery of motor and cognitive function.

关键词： therapeutic robots post-stroke rehabilitation motor function cognitive function

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Do ESG Scores in Corporations Improve Green Innovation Empirical Evidence from Listed Chinese Companies

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Proceedings of Business and Economic Studies 2023年第4期6卷 1-25页

作者： Hao Jiang lingyu liu Ling Hu Babson College 02457 WellesleyUnited States College of Economics and Trade Guangdong University of Foreign Studies G uangzhou 510006China School of Economics and Management Guangzhou Institute of Science and Technology Guangzhou 510540China

The ESG score system is a fundamental component of the green financial system that is essential in promoting corporate environmental *** this work we investigate the micro-environmental impact of ESG scores using panel fixed effects *** examine the processes underlying the influence of ESG scores on the performance of corporate green innovation as well as any potential inequalities in this impact under different moderating *** conduct our analysis we use data from Chinese-listed A-shares on the Shanghai and Shenzhen stock exchanges from 2010 to *** study demonstrates a relationship between corporate green innovation and ESG ratings indicating that higher ESG ratings assist businesses in achieving better green innovation *** beneficial effect is evident both numerically and qualitatively and it continues to hold up even after being put through several demanding *** we pinpoint two main ways that ESG encourages corporate green innovation by boosting government-enterprise ties and strengthening corporate investment *** also note that while business characteristics aligned with sustainability further enhance the favorable influence of ESG on green innovation performance characteristics linked to ecologically detrimental activities impede the contribution of ESG to green *** study adds to the body of knowledge already available on corporate environmental performance and green finance by offering empirical insights that can help enhance corporate environmental development and improve the ESG rating system.

关键词： ESG Green innovation Investment efficiency Government-business relationship Environmental features

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Response of the Ginseng C_(2)H_(2)-Type Zinc Finger Protein Family PgZFPs Gene to Methyl Jasmonate Regulation

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Phyton-International Journal of Experimental Botany 2024年第11期93卷 3055-3071页

作者： Yue Jiang lingyu liu Kangyu Wang Mingzhu Zhao Ping Chen Jun Lei Yanfang Wang Meiping Zhang Yi Wang Guang Chen College of Life Science Jilin Agricultural UniversityChangchun130118China Research Center for Ginseng Genetic Resources Development and Utilization Jilin ProvinceJilin Agricultural UniversityChangchun130118China College of Chinese Medicinal Materials Jilin Agricultural UniversityChangchun130118China

The main active components of ginseng are ginsenosides,which play signiﬁcant roles in treating cardiovascular diseases,cancer,and providing antioxidant *** are primarily synthesized through the mevalo-nate pathway and the methylerythritol phosphate *** key enzyme genes involved in this biosynthetic process have been cloned and validated,yet the regulatory functions of transcription factors remain *** C_(2)H_(2)-type zincﬁnger protein family,one of the largest families of transcription factors,is crucial in plant growth and development,response to biotic and abiotic stresses,and regulation of secondary *** study,based on the ginseng transcriptome database from Jilin,conducted a correlation analysis between the expression levels of PgZFPs genes in the Jilin ginseng C_(2)H_(2)-type zincﬁnger protein family and ginsenoside content,a gen-ome-wide association study of PgZFPs,and co-expression analysis of PgZFPs with validated key enzyme ***,ﬁve candidate genes involved in ginsenoside biosynthesis were identiﬁ*** involvement of PgZFP27 and PgZFP-59-02 genes from the PgZFPs family in the biosynthesis of ginsenosides was validated through in vitro methyl jasmonate(MeJA)induction *** result provides new genetic resources for the biosynthesis of ginsenosides.

关键词： Ginsenosides C_(2)H_(2)-type zincﬁnger protein family MeJA induction functional study SIT SITIENS FLC FLACCA MVA Mevalonate MEP 2-C-methyl-D-erythritol 4-phosphate GWAS Genome-wide association studies HPLC High-performance liquid chromatography

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Heat-treated glassy carbon under pressure exhibiting superior hardness,strength and elasticity

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Journal of Materiomics 2021年第1期7卷 177-184页

作者： Meng Hu Shuangshuang Zhang Bing liu Yingju Wu Kun Luo Zihe Li Mengdong Ma Dongli Yu lingyu liu Yufei Gao Zhisheng Zhao Yoshio Kono Ligang Bai Guoyin Shen Wentao Hu Yang Zhang Ralf Riedel Bo Xu Julong He Yongjun Tian Center for High Pressure Science(CHiPS) State Key Laboratory of Metastable Materials Science and TechnologyYanshan UniversityQinhuangdao066004China Fachbereich Material-und Geowissenschaften Technische Universitat DarmstadtOtto-Berndt-Str.3Darmstadt64287Germany Key Laboratory for Microstructural Material Physics of Hebei Province School of ScienceYanshan UniversityQinhuangdao066004China High Pressure Collaborative Access Team(HPCAT) Advanced Photon SourceArgonne National LaboratoryIL60639USA Institute of High Energy Physics Chinese Academy of ScienceBeijing100049China

Glassy carbon(GC)is a type of non-graphitizing disordered carbon material at ambient pressure and high temperatures,which has been widely used due to its excellent mechanical *** we report the changes in the microstructure and mechanical properties of GC treated at high pressures(up to 5 GPa)and high *** formation of intermediate sp2-sp3 phases is identified at moderate treatment temperatures before the complete graphitization of GC,by analyzing synchrotron X-ray diffraction,Raman spectra,and transmission electron microscopy *** intermediate metastable carbon materials exhibit superior mechanical properties with hardness reaching up to 10 GPa and compressive strength reaching as high as 2.5 GPa,nearly doubling those of raw GC,and improving elasticity and thermal *** synthesis pressure used in this study can be achieved in the industry on a commercial scale,enabling the scalable synthesis of this type of strong,hard,and elastic carbon materials.

关键词： Glassy carbon Industrially achievable pressure sp2-sp3 intermediate carbon Hardness Strength Elasticity

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胎儿循环血流变化与胎儿生长受限关系的研究新进展

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中国全科医学 2020年第32期23卷 4064-4068页

作者：刘凌宇蔺莉北京大学国际医院北京市102206

胎儿生长受限(FGR)是一种常见的妊娠合并症,其与临床不良事件、死产和胎儿脑性瘫痪的发生密切相关。目前,多普勒超声检查已被成功应用到胎儿血流动力学监测领域。但迄今为止,尚无统一的多普勒超声检查监测管理方案能有效降低FGR发病率... 详细信息

胎儿生长受限(FGR)是一种常见的妊娠合并症,其与临床不良事件、死产和胎儿脑性瘫痪的发生密切相关。目前,多普勒超声检查已被成功应用到胎儿血流动力学监测领域。但迄今为止,尚无统一的多普勒超声检查监测管理方案能有效降低FGR发病率和胎儿死亡率。FGR最常见的诱因是胎盘功能不全引发的氧气和营养物质缺乏。发生FGR时,胎儿各器官启动保护机制,血流动力学发生改变,这使得采用多普勒超声检查监测胎儿血流动力学变化来判断胎儿宫内状况成为可能。本文主要介绍了FGR的概念、胎儿血液循环系统及其与FGR的关系,以及部分多普勒血流动力学监测指标,包括脐动脉、大脑中动脉、子宫动脉、静脉导管和主动脉峡部的血流频谱指标以及心肌做功指数,并对其进行了综述,对比分析了各指标的优点和不足以及适用情况。

关键词：胎儿生长迟缓多普勒超声检查血流动力学血流频谱

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子女接受高等教育会影响父母健康吗——高等教育代际健康回报的实证检验

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教育研究 2024年第6期45卷 115-125页

作者：刘凌宇蒋凯教育部学位与研究生教育发展中心评估处北京100083 北京大学教育学院北京100871

在推进教育强国建设中,高等教育的龙头地位不但体现在促进人的全面发展、培养满足时代发展之需的高素质人才方面,而且体现在提升人口健康水平、支撑健康中国建设等重要方面。聚焦高等教育的代际健康回报,采用倾向得分匹配法和中介效应模... 详细信息

在推进教育强国建设中,高等教育的龙头地位不但体现在促进人的全面发展、培养满足时代发展之需的高素质人才方面,而且体现在提升人口健康水平、支撑健康中国建设等重要方面。聚焦高等教育的代际健康回报,采用倾向得分匹配法和中介效应模型,利用中国家庭追踪调查数据,探究子女接受高等教育对父母健康的影响效应和作用机制。研究发现,子女接受高等教育对父母健康的影响效应具有异质性。子女接受高等教育对父亲健康并未产生显著影响,但对母亲健康具有显著的正向影响,能够显著提升母亲的日常生活能力、降低抑郁水平。经济渠道发挥了重要中介作用,子女接受高等教育后提升了自身的社会经济地位,进而显著降低了母亲的抑郁水平。高等教育作为一种重要的社会因素,能够带来代际健康回报,影响个体和家庭健康人力资本的积累。未来应持续发展高等教育,增进社会人力资本积累,为健康中国建设奠定坚实基础。

关键词：高等教育健康非物质回报代际影响

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数字化驱动制造业绿色转型:作用机理、制约因素与实现路径

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学术前沿 2023年第21期 108-110页

作者：陈昭刘玲玉广东外语外贸大学经济贸易学院

我国是世界第一制造大国。制造业的持续健康发展,顺利转型升级,对中国经济的未来至关重要。数字化技术能够通过提升能源利用效率、加快技术创新和引领多链融合等途径,帮助制造业加速实现绿色转型,但也存在数字化基础程度低、制造业数字... 详细信息

我国是世界第一制造大国。制造业的持续健康发展,顺利转型升级,对中国经济的未来至关重要。数字化技术能够通过提升能源利用效率、加快技术创新和引领多链融合等途径,帮助制造业加速实现绿色转型,但也存在数字化基础程度低、制造业数字化渗透率不高、数字化研发投入不足等现实瓶颈问题,需加快数字基础设施建设、建立健全激励政策、加强关键核心技术攻关。

关键词：数字化发展绿色转型作用机理制约因素实现路径

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