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Full Envelope Dynamics Modeling and Simulation for Tail-Sitter Hybrid UAVs

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Full Envelope Dynamics Modeling and Simulation for Tail-Sitt...

第36届中国控制会议

作者： yijie ke Ben M.Chen Unmanned System Research Group Department of Electrical and Computer EngineeringNational University of Singapore

ISBN: (纸本)9781538629185

This paper presents a comprehensive modeling approach for tail-sitter hybrid UAVs featured by vertical take-off and landing（VTOL） and cruise flight capabilities. The modeling approach includes all essential components, such as full angle of attack envelope wing and fuselage aerodynamics, sideslip wind effect and actuator dynamics. A unified formulation comprising all model components is derived to constitute the core of our simulation environment. Simulation results show that our approach is effective to predict flight dynamics and can serve as the testbed for real implementations.

关键词： Dynamics modeling Full envelope aerodynamics Hybrid UAV Tail-sitter

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汽车座椅舒适度人工智能评价方法研究

机械科学与技术 2011年第3期30卷 419-422页

作者：马佳柯艺杰苏强杨海霞李尔中国工程技术中心上海201201 同济大学经济与管理学院上海200092 常州纺织服装职业技术学院常州213100

随着汽车的普及应用,座椅舒适性成为关注焦点。然而,目前有关汽车座椅舒适度评价主观性较大,缺乏客观可行的评价方法。笔者通过有针对性的客户问卷调查,应用人工神经网络技术,以座椅的各部分特征性能为输入变量,建立了汽车座椅舒适度的... 详细信息

随着汽车的普及应用,座椅舒适性成为关注焦点。然而,目前有关汽车座椅舒适度评价主观性较大,缺乏客观可行的评价方法。笔者通过有针对性的客户问卷调查,应用人工神经网络技术,以座椅的各部分特征性能为输入变量,建立了汽车座椅舒适度的人工智能评价系统。此外,为了进一步提高该系统的预测精度,笔者还应用了聚类分析方法。通过样本类数的调整,能将系统预测误差从原来的41.09%最大降至27.845%。

关键词：汽车座椅舒适度神经网络聚类分析

Preparation of Ti-based Yb-doped SnO_(2)-RuO_(2) electrode and electrochemical oxidation treatment of coking wastewater

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Journal of Rare Earths 2022年第5期40卷 763-771,I0003页

作者： Weida Wang ke Wang Wenting Hao Tingting Zhang yijie Liu Linghong Yu Weiping Li School of Energy and Environment Inner Mongolia University of Science and TechnologyBaotou 014010China School of Environmental and Municipal Engineering Xi’an University of Architecture and TechnologyXi'an 710055China MCC Northwest Engineering Technology Co. Ltd.Baotou 014010China

In this study,the Ti/SnO_(2)-RuO_(2) electrodes with different Yb contents were prepared by sol-gel method and thermal decomposition method,and the surface morphology and crystal structure of the electrodes were characterized by scanning electron microscopy(SEM),atomic force microscopy(AFM) and X-ray diffraction(XRD),the electrochemical properties of the electrodes were tested by linear sweep voltammetry(LSV) and cyclic voltammetry(CV).The electrochemical oxidation device was constructed with Yb-doped Ti/SnO_(2)-RuO_(2) electrode as the anode and titanium plate as the cathode,and the electrochemical oxidation effect and product changes of the anode on co king wastewater were *** results show that the surface of the electrode is flat with high crystallinity of SnO_(2) and RuO_(2) crystals at1.5% Yb doping,and the LSV and CV curves indicate that the Yb doping of 1.5% increases the oxygen precipitation potential and electrocatalytic oxidation activity of the *** the electrode with Yb doping of 1.5% is the anode with current density of 10 mA/cm^(2) electrochemical oxidation time of 30 min,the electrode can remove chemical oxygen demand(COD) up to 85.06%,total organic carbon(TOC) up to 60.59% and UV_(254) from 1.594 to 0.507 for coking *** chromatography(GC-MS),UV-vis and three-dimensional fluorescence results of coking wastewater before and after treatment show that large toxic substances in coking wastewater are degraded to low toxic organic substances,and most soluble organic substances are degraded and *** study provides the possibility of basic research for the engineering practice of electrochemical oxidation for the treatment of coking wastewater.

关键词： Yb Ti/SnO_(2)-RuO_(2) Electrochemical oxidation Coking wastewater

基于隐结构模型与频繁项集探讨特发性肺纤维化的辨证用药规律

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山东中医杂志 2024年第2期43卷 133-138,152页

作者：侯超峰李亚兰杜一杰陈珂陈乾河南中医药大学第二临床医学院河南郑州450046 河南中医药大学医学院河南郑州450046 河南省中医院重症医学科河南郑州450002

目的:探讨中医治疗特发性肺纤维化(IPF)的辨证用药规律,为临床治疗IPF提供参考。方法:在中国知网、万方数据知识服务平台、PubMed、Embase等数据库中,检索建库至2021年8月8日辨证应用中药汤剂治疗IPF的相关文献,提取证型、症状及中药处... 详细信息

目的:探讨中医治疗特发性肺纤维化(IPF)的辨证用药规律,为临床治疗IPF提供参考。方法:在中国知网、万方数据知识服务平台、PubMed、Embase等数据库中,检索建库至2021年8月8日辨证应用中药汤剂治疗IPF的相关文献,提取证型、症状及中药处方信息,构建IPF医案数据库,采用隐结构模型、频繁项集等数据挖掘方法分析中药汤剂内服治疗IPF的辨证用药规律。结果:共纳入文献39篇,包含病例1497例。纳入文献共包含症状163个,如咳嗽、乏力、气短等,将频次3的53个症状作为显变量构建IPF的隐结构模型,该模型提示气虚血瘀是IPF的常见证型。纳入文献包含的处方中共涉及中药163味,其中高频药物包括黄芪、甘草、丹参、当归、党参等;挖掘出“症状-中药”频繁项集5项,如“胸痛乏力+舌有瘀斑+脉沉细+丹参+桃仁+党参”;“证型-症状-中药”频繁项集4项,如“气虚血瘀+胸闷乏力+舌有瘀斑+黄芪+丹参+当归”。结论:气虚血瘀是IPF的临床常见证型,中药汤剂治疗IPF多以黄芪、甘草、丹参为主要药物,药物配伍根据临床辨证选择。

关键词：特发性肺纤维化数据挖掘隐结构模型频繁项集辨证用药规律肺痿

What is the Industrial Structure Changes of China?

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Journal of Systems Science and Information 2020年第6期11卷 487-503页

作者： yijie WANG Yanyan ke Xianrui MA Yitian REN School of Management Science and Real Estate Chongqing UniversityChongqing 400000China College of Harbour and Environmental Engineering Jimei UniversityXiamen 361021China College of Economics and Management Southwest UniversityChongqing 400000China Department of Planning and Environmental Management The University of ManchesterOxford RoadManchester M139PLUK

Although China has made great achievements in economic scale,the model of high-quality economic developments is still in the exploratory stage.A series problems,such as unreasonable industrial structure and low production effciency,need to be resolved *** transformation and upgrading of industrial structure is the inevitable *** analysis of industrial relations is an important method to reveal the internal mechanism of industrial structure ***,based on the concepts of sensitivity and influence coeffcient,this paper proposed the concepts of driven and driving coeffcient,and constructed the industrial complex networks of China from 1999 to 2013 according to the EORA input-output *** the perspectives of the interaction power,industrial linkages and community structure,this paper systematically analyzes the evolution of China’s industrial *** show that China’s industrial structure is undergoing a transformation from industry-oriented to *** interaction linkages between industries has formed a robust association *** traditional sectors such as infrastructure construction and industries are still the largest consumer group driving the development of other ***,light industry,infrastructure construction and finance have become increasingly important hub industries in the industrial ***,some unbalanced community structures are formed in the economic system,which has resulted in a waste of resources and low production effciency to a certain *** grasping the relationship between China’s industrial structure evolution and its association is conducive to formulating economic restructuring policies,promoting the upgrading of China’s economic and,realizing the leap from quantitative change to qualitative change.

关键词： industrial structure driven and driving ability complex network community structure

弥散张量成像技术联合白质纤维束成像技术在脊髓型颈椎病中的诊断价值研究

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重庆医学 2024年第6期53卷 819-824页

作者：谢思民樊淋胡亦劼唐可权正学重庆医科大学附属第一医院骨科重庆400016

目的探讨弥散张量成像(DTI)技术联合白质纤维束成像(DTT)技术各项参数对脊髓型颈椎病(CSM)患者的诊断价值。方法前瞻性选取20例接受手术的CSM患者(CSM组)和20名健康志愿者(对照组)为研究对象。研究对象接受颈椎常规磁共振成像(MRI)检... 详细信息

目的探讨弥散张量成像(DTI)技术联合白质纤维束成像(DTT)技术各项参数对脊髓型颈椎病(CSM)患者的诊断价值。方法前瞻性选取20例接受手术的CSM患者(CSM组)和20名健康志愿者(对照组)为研究对象。研究对象接受颈椎常规磁共振成像(MRI)检查及DTI扫描,对图像进行后处理得到DTI和DTT参数值,主要指标包括分数各向异性(FA)、平均弥散系数(DC-avg)及白质纤维束密度(DTT-density)值,并记录每位CSM患者的日本骨科协会(JOA)评分及脊髓受压程度,同时根据JOA评分对CSM患者进行分级,以脊髓受压程度与JOA评分分为影像学典型表现组及影像学非典型表现组。比较CSM组患者与对照组健康志愿者DTI、DTT参数的差异,通过Pearson及Spearman相关性分析影像学典型表现组及非典型表现组CSM患者DTI、DTT参数与JOA评分间的相关性。结果 CSM组患者(除C1/2的FA、DTT-density值及C7/T1的DC-avg、DTT-density值外)FA及DTT-density值较对照组健康志愿者明显降低,DC-avg较对照组健康志愿者明显升高,差异有统计学意义(P0.05)。影像学典型表现组患者及非典型表现组患者的FA、DC-avg、DTT-density值与患者JOA评分相关(P<0.05)。结论在CSM患者的术前诊断中,FA、DC-avg、DTT-density值与患者的JOA评分密切相关,可有效判断患者的实际神经损伤。

关键词：脊髓型颈椎病磁共振成像弥散张量成像白质纤维束成像诊断效果

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ITO纳米晶-植物纤维复合材料的电阻式压力传感器

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中国科学:材料科学(英文版) 2023年第10期66卷 3922-3930页

作者：夏亿劼黄鹏举林心铭吴鲁超李珂高晨溟钟高余 School of Mechanical Engineering University of Shanghai for Science and TechnologyShanghai 200093China Department of Materials Science Fudan UniversityShanghai 200433China

可穿戴电子设备因其在机器人触觉、人机交互和脉搏测试等领域具有潜在应用而引起广泛关注.作为一种可穿戴电子设备,柔性压力传感器应该是环保的,而且制造成本低.基于纤维素纸的压力传感器由于其优良的特性,如轻质、无毒或低毒、可降解... 详细信息

可穿戴电子设备因其在机器人触觉、人机交互和脉搏测试等领域具有潜在应用而引起广泛关注.作为一种可穿戴电子设备,柔性压力传感器应该是环保的,而且制造成本低.基于纤维素纸的压力传感器由于其优良的特性,如轻质、无毒或低毒、可降解性和柔韧性,而引起了人们的关注.在此,我们报道了一种基于铟锡氧化物(ITO)纳米晶体和植物纤维复合材料的电阻式触觉传感器.该压力传感器具有宽的检测范围(0-100 kPa)、高灵敏度(464.88 kPa^(-1))、快速的响应时间(6.93 ms)和恢复时间(7.18 ms)以及良好的加载/卸载稳定性.我们还展示了该压力传感器用于脉搏测试、呼吸监测、语音识别等各种人体运动检测.结果表明,ITO纳米晶-植物纤维复合材料压力传感器在智能可穿戴电子产品中显示出巨大应用潜力.

关键词： pressure sensors piezoresistance nanocrystalline composite

铁代谢异常及铁死亡与多囊卵巢综合征关系的研究进展

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国际内分泌代谢杂志 2023年第2期43卷 124-127页

作者：蒋艺婕杜科华飞常州市第一人民医院内分泌代谢科苏州大学附属第三医院常州213003

铁代谢参与机体许多重要生理活动,铁死亡是一种新型程序性细胞死亡方式,人们对铁代谢、铁死亡在多囊卵巢综合征(PCOS)中的作用了解局限。在患有PCOS的患者中发现铁超载现象,且铁代谢也对PCOS患者的激素、代谢、生殖产生直接或间接影响... 详细信息

铁代谢参与机体许多重要生理活动,铁死亡是一种新型程序性细胞死亡方式,人们对铁代谢、铁死亡在多囊卵巢综合征(PCOS)中的作用了解局限。在患有PCOS的患者中发现铁超载现象,且铁代谢也对PCOS患者的激素、代谢、生殖产生直接或间接影响。铁死亡亦可造成PCOS患者代谢紊乱。目前,PCOS的发病机制不明,通过对铁代谢、铁死亡的了解阐明其与PCOS之间的关系,以期探索出对PCOS的治疗新靶点。

关键词：多囊卵巢综合征铁代谢铁死亡

MEMS Gyroscope Performance Estimate Based on Allan Variance

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MEMS Gyroscope Performance Estimate Based on Allan Variance