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Operational Index Evaluation Based on Greedy Strategy in a Combat of Multi-Arms

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Operational Index Evaluation Based on Greedy Strategy in a C...

High entropy defective fluorite structured rare-earth niobates and tantalates for thermal barrier applications

第32届中国控制与决策会议

作者： Hao Zhang Li Gao Qiang Liu tao Wu wei wang Naval Command College Army Engineering University

The operational index evaluation needs to be combined with the static capability and dynamic tactics of arms of both *** to the Lanchester equation of multi-arms engagement,we propose an operational index evaluation method based on the greedy *** proposed method combines the normal engagement model and the reinforcement learning theory,and circularly updates the operational index and fire assignment of arms,which gradually converges to a stable *** method has the advantages of intuitive principle,bootstrap and convenient for computer processing.

关键词： Operational Index Evaluation Q-learning Lanchester Equation Multi-Arms Engagement

来源： cnki会议评论

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Journal of Advanced Ceramics 2020年第3期9卷 303-311页

作者： Zifan ZHAO Heng CHEN Huimin XIANG Fu-Zhi DAI Xiaohui wang wei XU Kuang SUN Zhjjian PENG Yanchun ZHOU Science and Technology on Advanced Functional Composite Laboratory Aerospace Research Institute of Materials&Processing TechnologyBeijing 100076China School of Engineering and Technology China University of GeosciencesBejing 100083China Shenyang National Laboratory for Materials Science Institute of Metal ResearchChinese Academy of SciencesShenyang 110016China Shanghai Chenhua Science and Technology Corporation Ltd. Shanghai 201804China

Rare-earth tantalates and niobates(REjtao7 and REjNbO7)have been considered as promising candidate thermal barrier coating(TBC)materials in next generation gas-turbine engines due to their ultra-low thermal conductivity and better thermal stability than yttria-stabilized zirconia(YSZ).However,the low Vickers hardness and toughness are the main shortcomings of RE;tao-and REjNbOr that limit their applications as TBC *** increase the hardness,high entropy(Yu3Ybu3Er/3)staor,(Y13YbnErns)NbO,and(Sm1/6Eu1/6Y 1/6Yb1/6Lu1/6Er1/6)3(Nb1/2Ta1/2)O7 are designed and synthesized in this *** high entropy ceramics exhibit high Vickers hardness(10.912.0 GPa),close thermal expansion coefficients to that of single-principal-component RE3tao,and RE;NbO,(7.9×10^-6-10.8×10-6 C-1 at room temperature),good phase stability,and good chemical compatibility with thermally grown Al2O3,which make them promising for applications as candidate TBC materials.

关键词： high entropy ceramics defective fluorite structure rare-earth niobates/tantalates thermal barrier coating material

大功率花瓣加速器X射线闪光放射治疗设备设计研究

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中国医学装备 2024年第1期21卷 21-23,28页

作者：廖树清何小中杨柳唐若魏涛张卓石金水邓建军中国工程物理研究院流体物理研究所绵阳621900

目的:研究设计一种用于超高剂量率的闪光放射治疗(Flash-RT)设备,用于超高剂量率Flash-RT的机制研究。方法:Flash-RT设备的设计基于大功率花瓣加速器技术路线,可实现Flash-RT对超高剂量率及多照射角度的需求。从设备总体设计、主要组件... 详细信息

目的:研究设计一种用于超高剂量率的闪光放射治疗(Flash-RT)设备,用于超高剂量率Flash-RT的机制研究。方法:Flash-RT设备的设计基于大功率花瓣加速器技术路线,可实现Flash-RT对超高剂量率及多照射角度的需求。从设备总体设计、主要组件及特点、束流动力学设计、移动及初步实验平台搭建等方面开展相应设计与研究。结果:设计的Flash-RT设备剂量率在距离靶点0.8 m处可达到100 Gy/s,并且容易实现多角度的放射治疗方式。结论:基于大功率花瓣加速器技术路线设计的X射线设备,可实现超高剂量率的医用Flash-RT设备机制的研究。

关键词：闪光放射治疗(Flash-RT) 花瓣加速器超高剂量率多角度

维普期刊数据库博看期刊

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铰接农用车路径跟踪控制算法研究

拖拉机与农用运输车 2024年第3期51卷 49-52页

作者：程家琪魏涛陈轩伟高云龙祝青园邵桂芳厦门大学萨本栋微米纳米科学技术研究院福建厦门361102 智能农业动力装备全国重点实验室河南洛阳471039

针对铰接农用车在变附着系数路面条件下的路径跟踪精度难以保证的问题,提出了引入侧滑补偿的非线性模型预测控制(Nonlinear Model Predictive Control,NMPC)算法。首先,构建了考虑侧滑补偿的铰接农用车二自由度运动学模型,并基于该模型... 详细信息

针对铰接农用车在变附着系数路面条件下的路径跟踪精度难以保证的问题,提出了引入侧滑补偿的非线性模型预测控制(Nonlinear Model Predictive Control,NMPC)算法。首先,构建了考虑侧滑补偿的铰接农用车二自由度运动学模型,并基于该模型在Simulink中构建了NMPC控制器,最后以Adams环境中的虚拟铰接农用车为被控对象,以农业典型的地头转弯路径为参考路径,开展了变附着系数路面条件下的试验验证。结果表明,该算法的跟踪误差最大约为0.03 m,能够实现铰接农用车在变附着系数路面下的高精度路径跟踪。

关键词：路径跟踪铰接农用车非线性模型预测控制侧滑角

Tenascin-C as a prognostic biomarker in osteosarcoma？

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Chinese Medical Journal 2009年第22期122卷 2737-2743页

作者： XIONG wei NIU Peng-yan ZHU Wen-tao CHEN Jing Department of Orthopaedics Tongji Hospital Tongji Medical College Huazhong University of Science and Technology Wuhan Hubei 430030 China Department of Nuclear Medicine Tongji Hospital Tongji Medical College Huazhong University of Science and Technology Wuhan Hubei 430030 China

Background Treating metastatic osteosarcoma has been challenged in past decades. Extracelluar matrix （ECM） proteins play an important role in the progression of osteosarcoma as they are pivotal components of the tumor microenvironment. Here, we identified potential genes belonging to the ECM and characterized the roles of these genes in the progression of osteosarcoma and their association with outcomes. Methods Osteosarcoma parental cell line MG63 and its derivative MG63-A1 with a high metastatic potential underwent oligonucleotide microarray analysis. Gene ontology analysis was used to screen deregulated genes between the 2 cell lines which were either upregulated or downregulated by more than 4 fold, particularly focusing on mRNAs encoding extracellular matrix proteins. The expression of resulting candidate genes was then validated by reverse transcription-PCR for mRNA expression as well as Western blotting for protein expression. Immunohistochemistry was performed on 37 osteosarcoma specimens to examine the potential role of the candidate genes in a clinical context. Results Microarray data and gene ontology analysis showed that Tenascin-C, a critical component of the ECM, is significantly down-regulated in the highly metastatic cell line MG63-A1 compared with the parental osteosarcoma cell line MG63-wt. This finding was validated at mRNA and protein levels. Immunohistochemical analysis found that Tenascin-C is located in the intercellular space in osteosarcoma specimens. Furthermore, low-grade Tenascin-C expression （less than 20%） in osteosarcoma specimens was associated with poor survival. Conclusions Tenascin-C expression level correlates with the survival of osteosarcoma patients. Its biological functional role and underlying molecular mechanisms in the progression of osteosarcoma needs further investigation.

关键词： osteosarcoma metastasis Tenascin-C

Naxi-English Bilingual Word Alignment Based on Language Characteristics and Log-Linear Model

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China Communications 2012年第3期9卷 78-86页

作者： Yu Zhengtao Xian Yantuan Tian wei Guo Jianyi Zhang tao Kunming Univ Sci & Technol Sch Informat Engn & Automat Kunming 650550 Peoples R China

We propose a method that can achieve the Naxi-English bilingual word automatic alignment based on a log-linear *** method defines the different Naxi-English structural feature functions,which are English-Naxi interval switching function and Naxi-English bilingual word position transformation *** the manually labeled Naxi-English words alignment corpus,the parameters of the model are trained by using the minimum error,thus Naxi-English bilingual word alignment is achieved *** are conducted with IBM Model 3 as a benchmark,and the Naxi language constraints are *** final experiment results show that the proposed alignment method achieves very good results:the introduction of the language characteristic function can effectively improve the accuracy of the Naxi-English Bilingual Word Alignment.

关键词： word aligrmaent Naxi language English log-linear model interval switching function posi-tion transformation function

“诗”何以道“真”?——论后期海德格尔对老庄“道·真·言”思想的创造性转化与创新性发展

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理论界 2024年第5期 37-43页

作者：岳进周伟长安大学人文学院

对于“存在、真理、语言、艺术”的关系问题,尤其是“诗”与“真”之间的关系问题的探索,是后期海德格尔研究的主要畛域。诚然,海氏思想的发展,就内容而言,受到了很多西方重要哲学家的影响,但就思维和灵感而言,海氏后期也曾受到老庄的... 详细信息

对于“存在、真理、语言、艺术”的关系问题,尤其是“诗”与“真”之间的关系问题的探索,是后期海德格尔研究的主要畛域。诚然,海氏思想的发展,就内容而言,受到了很多西方重要哲学家的影响,但就思维和灵感而言,海氏后期也曾受到老庄的“道·真·言”思想的影响。这主要体现在:其一,海氏后期的研究动机受到了老庄思想的启发;其二,从消解“道”实体与摆脱“物”之“道”的思维角度而言,从反对“知物符合论”的“真理”观而言,海氏接受并发展了老庄的“道—真”思想;其三,从诗歌揭示“存在”之“真”的方式,以及召唤“此在”进入“诗意地栖居”人生境界层面而言,海氏创新发展了老庄的言说思想。故而,海氏对老庄思想的这一超越民族性和时空性的接受方式,对创新发展当下传统文化具有借鉴价值。

关键词：海德格尔老庄道存在真理言说诗歌

CBL联合MDT教学法在老年心脏病学教学中的应用效果分析

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心脏杂志 2024年第2期36卷 241-243页

作者：陈希瑶陈伟胡洸瑜夏云龙陶凌张富洋空军军医大学西京医院老年病科陕西西安710032 空军军医大学西京医院心血管内科陕西西安710032

目的分析基于案例学习的教学法(case-based learning,CBL)联合多学科联合团队(multi-disciplinary team,MDT)教学法在老年心血管病学教学中的应用效果。方法纳入在空军军医大学西京医院见习本科生42人,并将其随机分为传统教学法组(21人)... 详细信息

目的分析基于案例学习的教学法(case-based learning,CBL)联合多学科联合团队(multi-disciplinary team,MDT)教学法在老年心血管病学教学中的应用效果。方法纳入在空军军医大学西京医院见习本科生42人,并将其随机分为传统教学法组(21人)和CBL联合MDT教学法组(21人)。在教学结束时,比较两组学生的理论考试分数,并以问卷调查形式评估两组学生对其所接受的教学法的满意度。结果较传统教学法组,CBL联合MDT教学法组理论考试分数显著提高(P<0.05)。接受CBL联合MDT教学法的学生对教学模式的满意度较传统教学法组也显著提高(均P<0.05)。结论CBL联合MDT教学法能显著提高老年心血管病学的临床教学效果和学生对教学的满意度。

关键词： CBL MDT 老年心脏病学教学

Flexible Bio-tensegrity Manipulator with Multi-degree of Freedom and Variable Structure

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Chinese Journal of Mechanical Engineering 2020年第1期33卷 83-93页

作者： Dunwen wei tao Gao Xiaojuan Mo Ruru Xi Cong Zhou School of Mechanical and Electrical Engineering University of Electronic Science and Technology of ChinaChengdu 611731China School of Mechanical Engineering Northwestern Polytechnical UniversityXi’an 710072China School of Mechanical Engineering Hangzhou Dianzi UniversityHangzhou 310018China

Conventional manipulators with rigid structures and sti ness actuators have poor flexibility,limited obstacle avoidance capability,and constrained *** developed flexible or soft manipulators in recent years have the characteristics of infinite degrees of freedom,high flexibility,environmental adaptability,and extended manipulation ***,these existing manipulators still cannot achieve the shrinking motion and independent control of specified segments like the animals,which hinders their *** this paper,a flexible bio-tensegrity manipulator,inspired by the longitudinal and transversal muscles of octopus tentacles,was proposed to mimic the shrinking behavior and achieve the variable motion patterns of each *** proposed manipulator uses the elastic spring as the backbone,which is driven by four cables and has one variable structure mechanism in each segment to achieve the independent control of each *** variable structure mechanism innovatively contains seven lock-release states to independently control the bending and shrinking motion of each *** the kinematic modeling and analysis,one prototype of such bionic flexible manipulator was built and the open-loop control method was *** proof-of-concept experiments,including the shrinking motion,bending motion,and variable structure motion,were carried out by controlling the length of four cables and changing the lock-release states of the variable structure mechanism,which validate the feasibility and validity of our proposed ***,the experimental results show the flexible manipulator can accomplish the bending and shrinking motion with the relative error less than 6.8%through the simple independent control of each segment using the variable structure *** proposed manipulator has the features of controllable degree-of-freedom in each segment,which extend their environmental adaptability,and manipulation capability.

关键词： Bio-tensegrity Cable-driven actuation Multi-degree-of-freedom(Multi-DoF) Flexible manipulator Variable structure mechanism