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基于eHMI的车外人机交互信任影响因素研究

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包装工程 2024年第14期45卷 225-232页

作者：徐娟芳陈子昂江南大学设计学院江苏无锡214122

目的更好地发挥车外人机交互界面(eHMI)的潜在优势,研究车外人机交互过程中的信任影响机制。方法首先基于自动化信任理论,提出感知可靠性、感知透明度、感知熟悉度、感知车辆性能、感知品牌信誉和感知主观倾向等6个车外人机交互信任影... 详细信息

目的更好地发挥车外人机交互界面(eHMI)的潜在优势,研究车外人机交互过程中的信任影响机制。方法首先基于自动化信任理论,提出感知可靠性、感知透明度、感知熟悉度、感知车辆性能、感知品牌信誉和感知主观倾向等6个车外人机交互信任影响因素,然后使用结构方程模型的方法对305名被调查者进行数据分析,由此建立车外人机交互信任影响因素的理论模型。结果行人通过对eHMI信号感知而形成的信任能够影响对自动驾驶汽车的信任,行人对eHMI的信任一定程度上转移成为行人对车辆的信任,eHMI的辅助作用得到体现。强调了eHMI设计中感知可靠性的重要性,这能够被熟悉度、透明度和品牌信誉所影响。同时,行人的主观倾向和对车辆性能的感知也是影响信任水平的重要因素。结论研究结果为车外人机交互信任对于自动驾驶汽车在未来道路上使用的重要性提供了证据,同时也为eHMI的设计提供了参考和建议。

关键词：自动化信任自动驾驶汽车车外人机交互界面结构方程模型交互设计

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基于迟滞回线的航空相机减振器特性研究

兵器材料科学与工程 2024年第3期47卷 114-119页

作者：涂春潮计臣张雪颂陈子昂苑宇北京航空材料研究院股份有限公司北京100095

橡胶减振器具有优异的阻尼减振功能,且结构简单、可设计性强,在航空相机领域具有重要的研究与应用价值。用高阻尼硅橡胶材料制备航空相机减振器,通过迟滞回线法对其静刚度、动刚度、损耗因子的影响因素进行研究。结果表明:筒式航空相机... 详细信息

橡胶减振器具有优异的阻尼减振功能,且结构简单、可设计性强,在航空相机领域具有重要的研究与应用价值。用高阻尼硅橡胶材料制备航空相机减振器,通过迟滞回线法对其静刚度、动刚度、损耗因子的影响因素进行研究。结果表明:筒式航空相机减振器的静刚度随位移的增加先降后增;动刚度随频率和预压缩量的提高而提高,随动位移的增加而降低;损耗因子随位移的增加先降后增,随频率和预压缩量的增加而增加。当预压缩量一定时航空相机减振器的损耗因子由约为0.2,提高至0.6以上。

关键词：航空相机硅橡胶减振器迟滞回线静刚度动态特性

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A TRUST-REGION METHOD FOR NONSMOOTH NONCONVEX OPTIMIZATION

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Journal of Computational Mathematics 2023年第4期41卷 683-716页

作者： ziang chen Andre Milzarek Zaiwen Wen Department of Mathematics Duke UniversityUSA School of Data Science(SDS) The Chinese University of Hong KongShenzhenShenzhen Research Institute for Big Data(SRIBD)China Beijing International Center for Mathematical Research Peking UniversityBeijing 100000China

We propose a trust-region type method for a class of nonsmooth nonconvex optimization problems where the objective function is a summation of a(probably nonconvex)smooth function and a(probably nonsmooth)convex *** model function of our trust-region subproblem is always quadratic and the linear term of the model is generated using abstract descent ***,the trust-region subproblems can be easily constructed as well as efficiently solved by cheap and standard *** the accuracy of the model function at the solution of the subproblem is not sufficient,we add a safeguard on the stepsizes for improving the *** a class of functions that can be“truncated”,an additional truncation step is defined and a stepsize modification strategy is *** overall scheme converges globally and we establish fast local convergence under suitable *** particular,using a connection with a smooth Riemannian trust-region method,we prove local quadratic convergence for partly smooth functions under a strict complementary *** numerical results on a family of Ei-optimization problems are reported and demonstrate the eficiency of our approach.

关键词： Trust-region method Nonsmooth composite programs Quadratic model function Global and local convergence

Promotional effect for SCR of NO with CO over MnO_(x)-doped Fe_(3)O_(4) nanoparticles derived from metal-organic frameworks

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Chinese Journal of Chemical Engineering 2022年第6期35卷 113-125页

作者： Yu Zhang Ling Zhao ziang chen Xinyong Li School of Ecology and Environment Inner Mongolia UniversityChina School of Environmental Science&Technology Dalian University of TechnologyChina College of Veterinary Medicine University of FloridaUnited States

MnO_(x)-Fe_(3)O_(4) nanomaterials were fabricated by using the innovative scheme of pyrolyzing manganesedoped iron-based metal organic framework in inert atmosphere and exhibited extraordinary performance of NO reduction by CO(CO-SCR).Multi-technology characterizations were conducted to ascertain the properties of fabricated materials(e.g.,TGA,XRD,SEM,FT-IR,XPS,BET,H_(2)-TPR and O_(2)-TPD).Moreover,the interaction between reactants and catalysts was ascertained by in situ *** results demonstrated that Mn was an ideal promoter for iron oxides,resulting in decrease of crystallite size,improve reducibility property,enhance the mobility and the amount of lattice O^(2-) species,as well as strength the adsorption ability of active NO and CO to form multiple species(e.g.,nitrate and carbonate).The unprecedented enhancement of CO-SCR activity over Mn-Fe nanomaterials follows the Eley-Rideal(E-R)and Langmuir-Hinshelwood(L-H)reaction pathway.

关键词： Metal-organic framework MnO_(x)-doped Fe_(3)O_(4) NO reduction In situ FT-IR Reaction mechanism

结构-功能一体化异种复合材料壁板优化与验证

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空军工程大学学报 2024年第3期25卷 63-70页

作者：钟小平刘斌张纯李斐陈子昂刘彦诚西北工业大学航空学院西安710072

基于航空壁板结构承载-电气功能的一体化需求,对适用于智能蒙皮的异种复合材料壁板开展了优化设计与试验验证。通过在高模量碳纤维蒙皮的外侧增加玻璃纤维层,进行了以碳纤维-玻璃纤维-金属结构单元阵列-玻璃纤维复合顺序的壁板承载-电... 详细信息

基于航空壁板结构承载-电气功能的一体化需求,对适用于智能蒙皮的异种复合材料壁板开展了优化设计与试验验证。通过在高模量碳纤维蒙皮的外侧增加玻璃纤维层,进行了以碳纤维-玻璃纤维-金属结构单元阵列-玻璃纤维复合顺序的壁板承载-电气功能一体化设计。针对异种复合材料结构的铺层优化需要考虑共胶接的分区域及铺层连续性的工艺要求,发展了基于丢层序列的优化方法,并对于加筋壁板的几何外形、筋条数量、筋条几何参数以及筋条与蒙皮的铺层角度进行了优化设计。通过压缩稳定性试验验证了该结构在承载能力和稳定性方面的收益,明晰了其压缩载荷下的屈曲模态及后屈曲失效机理。

关键词：壁板结构-电气功能一体化屈曲失效复合材料

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基于瞬态有限元的齿轮箱迷宫密封泄漏研究

润滑与密封 2024年第3期49卷 24-34页

作者：陈子昂范静园沈龙江胡玉梅杨光程重庆大学机械与运载工程学院重庆400030 中车株洲电力机车有限公司湖南株洲412001

针对某高速列车齿轮箱迷宫密封的润滑油泄漏问题,基于ANSA软件建立齿轮箱及迷宫密封结构的有限元模型,并采用FLUENT软件对其进行多相流瞬态仿真分析,研究迷宫密封结构的相对啮合深度、节流齿厚、径向间隙、回油孔直径及个数、齿与台阶... 详细信息

针对某高速列车齿轮箱迷宫密封的润滑油泄漏问题,基于ANSA软件建立齿轮箱及迷宫密封结构的有限元模型,并采用FLUENT软件对其进行多相流瞬态仿真分析,研究迷宫密封结构的相对啮合深度、节流齿厚、径向间隙、回油孔直径及个数、齿与台阶距离、齿宽、密封间隙对润滑油泄漏量的影响。结果表明:当相对啮合深度大于0.5时,润滑油泄漏量与相对啮合深度呈负相关;润滑油泄漏量与节流齿厚、回油孔直径、回油孔数量呈负相关;润滑油泄漏量与径向间隙、齿宽、齿与台阶距离、密封间隙呈正相关。根据研究结果对迷宫密封结构进行改进,改进后的迷宫密封结构润滑油泄漏量降低为原始泄漏量的3.6%。

关键词：迷宫密封泄漏量齿轮箱结构改进飞溅润滑

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老年性白内障患者血糖与术后视力恢复的关联

安徽理工大学学报（自然科学版） 2024年第2期44卷 94-100页

作者：谢驰陈子盎章尧娄炜金海鹰安徽理工大学第一附属医院眼科安徽淮南232007 安徽理工大学医学院安徽淮南232001 同济大学附属东方医院眼科上海200120

目的分析年龄相关性白内障患者血糖水平及血糖变异性与人工晶体植入术后康复质量的关联。方法选取2020年1月~2023年1月收治的172例糖尿病合并年龄相关性白内障患者纳入观察组,并选取同期35例未合并糖尿病的年龄相关性白内障患者纳入对... 详细信息

目的分析年龄相关性白内障患者血糖水平及血糖变异性与人工晶体植入术后康复质量的关联。方法选取2020年1月~2023年1月收治的172例糖尿病合并年龄相关性白内障患者纳入观察组,并选取同期35例未合并糖尿病的年龄相关性白内障患者纳入对照组。对比观察组、对照组的血糖水平和血糖变异性,并按照观察组患者血糖变异性,将其分别纳入低、中、高变异性组,比较3组患者术后并发症及术后康复质量,包括最佳矫正视力、角膜散光度、视觉质量。结果观察组FPG、2 hPG、HbA1c以及GluMAGE、GluSD、GluAve、GluCV、GluGLI均高于对照组,差异有统计学意义(P<0.05)。观察组术后并发症发生率高于对照组,其术后1周、术后3个月BCVA、视觉质量均低于对照组,同时期角膜散光度均高于对照组,差异有统计学意义(P<0.05)。高血糖变异性患者术后并发症发生率高于低、中血糖变异性患者,其术后1周、术后3个月BCVA、视觉质量均低于低、中血糖变异性患者,同时期角膜散光度均高于低、中血糖变异性患者,差异有统计学意义(P<0.05)。结论合并糖尿病的年龄相关性白内障患者血糖水平及血糖变异性均更高,其术后并发症发生率高于未合并糖尿病者,且术后康复质量明显受限,而随着患者血糖变异性的上升,患者术后并发症发生率上升并伴康复质量显著下降。

关键词：糖尿病年龄相关性白内障血糖血糖变异性康复质量

Temperature-sensing array using the metal-to-insulator transition of Nd_(x)Sm_(1-x)NiO_(3)

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International Journal of Minerals,Metallurgy and Materials 2024年第7期31卷 1694-1700页

作者： Fengbo Yan ziang Li Hao Zhang Yuchen Cui Kaiqi Nie Nuofu chen Jikun chen School of Materials Science and Engineering University of Science and Technology BeijingBeijing 100083China School of Renewable Energy North China Electric Power UniversityBeijing 102206China Beijing Synchrotron Radiation Facility Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China

Rare-earth nickelates(RENiO_(3))show widely tunable metal-to-insulator transition(MIT)properties with ignorable variations in lattice constants and small latent heat across the critical temperature(TMIT).Particularly,it is worth noting that compared with the more commonly investigated vanadium oxides,the MIT of RENiO_(3)is less abrupt but usually across a wider range of *** sheds light on their alternative applications as negative temperature coefficient resistance(NTCR)thermistors with high sensitivity compared with the current NTCR thermistors,other than their expected use as critical temperature resistance *** this work,we demonstrate the NTCR thermistor functionality for using the adjustable MIT of Nd_(x)Sm_(1-x)NiO_(3)within 200–400 K,which displays larger magnitudes of NTCR(e.g.,more than 7%/K)that is unattainable in traditional NTCR thermistor *** temperature dependence of resistance(R–T)shows sharp variation during the MIT of Nd_(x)Sm_(1-x)NiO_(3)with no hysteresis via decreasing the Nd content(e.g.,x≤0.8),and such a R–T tendency can be linearized by introducing an optimum parallel *** sensitive range of temperature can be further extended to 210–360 K by combining a series of Nd_(x)Sm_(1-x)NiO_(3)with eight rare-earth co-occupation ratios as an array,with a high magnitude of NTCR(e.g.,7%–14%/K)covering the entire range of temperatures.

关键词： rare-earth nickelates metal-to-insulator transition correlated oxides perovskites

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Journal of Rare Earths 2024年第4期42卷 743-748页

作者： Hao Zhang Yi Bian Yuxuan Xia Yuchen Cui ziang Li Fang Zhang Yiming Bai Nuofu chen Jikun chen School of New Energy North China Electric Power UniversityBeijing102206China School of Materials Science and Engineering University of Science and Technology BeijingBeijing100083China

While the metal to insulator transition(MIT)of d-band correlated perovskite nickelates(RENiO_(3))are widely adjustable via their rare-earth composition,the roles of potential valence variabilities associated with the rare-earth elements were rarely ***,we demonstrate the material synthesis and MIT properties of RENiO_(3) containing valence variable rare-earth compositions,such as Ce,Pr,Sm,Eu and *** metastable perovskite structure of SmNiO_(3) and EuNiO_(3) with a rare-earth valence states variable towards+2 can be effectively synthesized under high oxygen pressures as it is necessary to reduce their formation free *** is in contrast to Ce and Tb,in which situations the variable rare-earth valence state towards+4 reduces their ionic radius and prohibits their occupation or co-occupation of the rare-earth site within the perovskite structured RENiO_(3).Nevertheless,PrNiO_(3) with MIT properties can be effectively synthesized at lower oxygen pressures,owing to the higher stability to form a fully occupied 6s orbit associated Pr3+compared to the half-filled one related to Pr4+.The present work provides guidance for regulating the MIT properties of RENiO_(3).

关键词： Metal to insulator transition Metastable perovskites Rare-earth nickelates Oxides