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Journal of Modern Transportation 2016年第2期24卷 124-131页

作者： G.x.Chen x.L.cui W.J.Qian State Key Laboratory of Traction power Tribology Research InstituteSouthwest Jiaotong UniversityChengdu 610031China

A finite element vibration model of a multiple wheel-rail system which consists of four wheels, one rail, and a series of sleepers is established to address the problem of rail corrugation in high-speed tracks. In the model, the creep forces between the wheels and rail are considered to be saturated and equal to the normal contact forces times the friction coefficient. The oscillation of the rail is coupled with that of wheels in the action of the saturated creep forces. When the coupling is strong, self- excited oscillation of the wheel-rail system occurs. The self-excited vibration propensity of the model is analyzed using the complex eigenvalue method. Results show that there are strong propensities of unstable self-excited vibrations whose frequencies are less than 1,200 Hz under some conditions. preventing wheels from slipping on rails is an effective method for suppressing rail corrugation in high-speed tracks.

关键词： Rail corrugation Wear Friction-induced vibration Self-excited vibration - Elastic vibration mode Wheel-rail system High-speed railway

Magnetotelluric imaging and tectonic movement characteristics of the central Yunnan sub-block and its adjacent areas

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Science China Earth Sciences 2023年第2期66卷 377-392页

作者： Tengfa cui xiaobin CHEN Institute of Earthquake Forecasting China Earthquake AdministrationBeijing100036China National Institute of Natural Hazards Ministry of Emergency Management of the People’s Republic of ChinaBeijing100085China

The central Yunnan sub-block is an important channel for southeast migration of materials in the Qinghai-xizang plateau,and therefore a key area to study tectonic movement and *** this study,a three-dimensional electrical structure of the crust and upper mantle lithosphere was derived from magnetotelluric data inversion along a survey line across the central Yunnan *** suggest that the middle and upper crust of the central Yunnan sub-block is comprised of several independent high-resistivity *** extension of some faults was revealed according to electrical structure and relocated *** Chenghai fault extends downward along the eastern boundary of a high-resistivity *** Yuanmou fault dips to the west and extends to the depth along the boundary between two high-resistivity *** Tanglang-Yimen fault cuts through a high-resistivity body in the middle and upper *** is an obvious high-conductivity C1 layer in the lower crust in the eastern part of the central Yunnan sub-block,and its western border displays an obvious structural boundary in the shallow *** eastern part of the central Yunnan sub-block moves eastward relative to the western part(bounded by the west side of a high-resistivity body R3 in the C1 west).C1 is speculated to be characterized by low rheological strength and viscosity,thus reducing the resistance to eastward movement of the eastern *** to the combined action of C1 and its western boundary,the eastern materials slip eastward faster relative to *** to South China Block resistance,the middle and upper crust in the eastern part is within a compressional tectonic environment,consistent with the negative dilatation rate and the presence of compressive faults in this *** C1 ground surface has a low strain rate,indicating weak deformation in this region and rigid motion *** results suggest that under the decoupling effect of the high-conductivity layer in the l

关键词： Magnetotelluric Three-dimensional inversion Electrical resistivity structure Central Yunnan sub-block Movement characteristics

职业使命感对大学生幸福感的影响及边界条件:一项元分析

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黑龙江高教研究 2025年第1期43卷 140-146页

作者：崔小雨李辉苏涛广东警官学院广东广州510230 中国人民公安大学北京100038 广东工业大学广东广州510520

为明晰职业使命感对大学生幸福感的影响及边界条件,基于29篇实证文献的44个独立研究、53个效应值、41819个独立样本,通过元分析方法对职业使命感与大学生幸福感的关系进行了系统量化综述。结果发现,就主效应而言,职业使命感对大学生幸... 详细信息

为明晰职业使命感对大学生幸福感的影响及边界条件,基于29篇实证文献的44个独立研究、53个效应值、41819个独立样本,通过元分析方法对职业使命感与大学生幸福感的关系进行了系统量化综述。结果发现,就主效应而言,职业使命感对大学生幸福感具有显著正向影响,且相较主观幸福感,职业使命感对大学生心理幸福感的影响更强。就边界条件而言,职业使命感对大学生幸福感的影响会因其所处地域、院校、年级而异:相较西方地域文化,职业使命感对东方地域文化下大学生幸福感、主观幸福感、心理幸福感的影响均更强;相较普通院校,职业使命感对行业特色院校大学生幸福感、主观幸福感、心理幸福感的影响均更强;相较高年级,职业使命感对低年级大学生心理幸福感的影响更强。

关键词：大学生职业使命感幸福感元分析调节效应

基于多尺度融合金字塔焦点网络的接触网零部件检测

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工程科学学报 2025年第2期47卷 315-327页

作者：朱新宇崔浩锐宋洋中国民用航空飞行学院航空电子电气学院广汉618307 西南交通大学利兹学院成都611756

作为高铁牵引供电系统的重要组成部分,接触网系统承担着向动车组传输电能的重要功能.实际工程运营表明,受弓网交互产生的持续冲击以及外部环境的影响,接触网支撑部件可能会出现“松、脱、断、裂”等缺陷,导致接触网结构可靠性下降,严重... 详细信息

作为高铁牵引供电系统的重要组成部分,接触网系统承担着向动车组传输电能的重要功能.实际工程运营表明,受弓网交互产生的持续冲击以及外部环境的影响,接触网支撑部件可能会出现“松、脱、断、裂”等缺陷,导致接触网结构可靠性下降,严重影响接触网系统稳定运行.因此,及时精确定位接触网支撑部件(CSCs),对保障高铁安全运行和完善接触网检修维护策略具有重大意义.然而,CSCs的检测通常面临着零部件种类多、尺度差异大、部分零部件微小的问题.针对以上问题,本文提出一种基于多尺度融合金字塔焦点网络的接触网零部件检测算法,将平衡模块和特征金字塔模块相结合,提高对小目标的检测性能.首先,设计了可分离残差金字塔聚合模块(SRpAM),用于优化模型多尺度特征提取能力、扩大感受野,缓解CSCs检测的多尺度问题;其次,设计了一种基于平衡特征金字塔的路径聚合网络(pA-BFpN),用于提升跨层特征融合效率和小目标检测性能.最后,通过对比试验、可视化实验和消融实验证明了所提方法的有效性和优越性.其中,所提的MFpFCOS在CSCs数据集上的检测精度(mAp)能够在达到48.6%的同时,实现30的FLOps(Floating point operations per second),表明所提方法能够在检测精度和检测速度之间保持良好的平衡.

关键词：深度学习目标检测接触网支撑组件(CSCs) 路径聚合特征金字塔(pA-FpN) 空洞空间卷积池化金字塔(ASpp)

CEO自恋对高管团队成员工作幸福感的影响:CEO谦卑与领导关系认同的作用

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管理工程学报 2025年第2期39卷 206-220页

作者：尹奎赵景宋萌崔国东董念念北京科技大学经济管理学院中国人民大学劳动人事学院北京工业大学经济管理学院山东大学山东省人才发展战略研究院

自恋的CEO在企业中比比皆是,会对员工与组织产生深远影响,而CEO谦卑特质是重要的情境因素。高管团队成员直面CEO并担负着组织内部重要的领导职责,对CEO自恋特质的感知和反应更深刻,其工作幸福感可能也更容易受到影响。基于关系认同理论... 详细信息

自恋的CEO在企业中比比皆是,会对员工与组织产生深远影响,而CEO谦卑特质是重要的情境因素。高管团队成员直面CEO并担负着组织内部重要的领导职责,对CEO自恋特质的感知和反应更深刻,其工作幸福感可能也更容易受到影响。基于关系认同理论,本文构建了一个有中介的调节效应模型,对56位CEO与319位TMT成员的配对数据进行分析,结果表明:CEO自恋对TMT成员工作幸福感产生负向影响;CEO谦卑能够弱化CEO自恋对TMT成员有关领导关系认同的消极影响;TMT成员对领导关系的认同积极影响工作幸福感,中介了CEO谦卑对CEO自恋与TMT成员工作幸福感关系的调节作用。研究拓展了领导自恋影响员工工作幸福感的研究层次与边界情境,揭示了领导关系认同在CEO谦卑弱化CEO自恋消极影响效应中的内在机制,验证了不同领导组合相对于单一领导对领导关系认同与工作幸福感的增强更具有效性,因而丰富了工作幸福感影响因素研究的主体,对CEO的遴选与培训具有潜在的指导意义。

关键词： CEO自恋 CEO谦卑工作幸福感领导关系认同

Interdecadal change of the linkage between the North Atlantic Oscillation and the tropical cyclone frequency over the western North pacific

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Science China Earth Sciences 2014年第5期57卷 2148-2155页

作者： ZHOU BoTao cui xuan National Climate Center China Meteorological Administration Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters Nanjing University of Information Science & Technology Nansen-Zhu International Research Center Institute of Atmospheric Physics Chinese Academy of Sciences

The relationship between the North Atlantic Oscillation(NAO) and the tropical cyclone frequency over the western North pacific(WNpTCF) in summer is investigated by use of observation data. It is found that their linkage appears to have an interdecadal change from weak connection to strong connection. During the period of 1948–1977, the NAO was insignificantly correlated to the WNpTCF. However, during the period of 1980–2009, they were significantly correlated with stronger(weaker) NAO corresponding to more(fewer) tropical cyclones in the western North pacific. The possible reason for such a different relationship between the NAO and the WNpTCF during the former and latter periods is further analyzed from the perspective of large-scale atmospheric circulations. When the NAO was stronger than normal in the latter period, an anomalous cyclonic circulation prevailed in the lower troposphere of the western North pacific and the monsoon trough was intensified, concurrent with the eastward-shifting western pacific subtropical high as well as anomalous low-level convergence and high-level divergence over the western North pacific. These conditions favor the genesis and development of tropical cyclones, and thus more tropical cyclones appeared over the western North pacific. In contrast, in the former period, the impact of the NAO on the aforementioned atmospheric circulations became insignificant, thereby weakening its linkage to the WNpTCF. Further study shows that the change of the wave activity flux associated with the NAO during the former and latter periods may account for such an interdecadal shift of the NAO–WNpTCF relationship.

关键词： tropical cyclone frequency North Atlantic Oscillation interdecadal change wave activity flux atmospheric circulation

Interpretable Data-Driven Learning With Fast Ultrasonic Detection for Battery Health Estimation

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IEEE/CAA Journal of Automatica Sinica 2025年第1期 267-269页

作者： Kailong Liu Yuhang Liu Qiao peng Naxin cui Chenghui Zhang the School of Control Science and Engineering Shandong University the Information Technology Analytics & Operations GroupQueen's University Belfast

Dear Editor,Health management is essential to ensure battery performance and safety, while data-driven learning system is a promising solution to enable efficient state of health(SoH) estimation of lithium-ion(Liion) batteries. However, the time-consuming signal data acquisition and the lack of interpretability of model still hinder its efficient deployment. Motivated by this, this letter proposes a novel and interpretable data-driven learning strategy through combining the benefits of explainable AI and non-destructive ultrasonic detection for battery SoH estimation. Specifically, after equipping battery with advanced ultrasonic sensor to promise fast real-time ultrasonic signal measurement, an interpretable data-driven learning strategy named generalized additive neural decision ensemble(GANDE) is designed to rapidly estimate battery SoH and explain the effects of the involved ultrasonic features of interest.

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HOT DUCTILITY OF 304HC STAINLESS STEEL AND THE MODEL OF RESISTANCE TO DEFORMATION

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Acta Metallurgica Sinica(English Letters) 2003年第2期16卷 97-103页

作者： H.S.Di G.Z.cui G.D.Wang x.H.Liu State Key Laboratory of Rolling and Automation Northeastern UniversityShenyang 110004ChinaState Key Laboratory of Rolling and AutomationNortheastern UniversityShenyang 110004ChinaState Key Laboratory of Rolling and AutomationNortheastern UniversityShenyang 110004ChinaState Key Laboratory of Rolling and AutomationNortheastern UniversityShenyang 110004China

The ductility map of 304HC stainless was determined by using the Gleeble-1500 dynamic thermal-mechanical simulator. The effect of Cu on the hot ductility of 304HC stainless steel was analyzed and the mathematical model of resistance to deformation was established. The microstructure, inclusion and fracture surface were studied by using the method of micro structure analysis, scanning, energy spectrum and electron microscope. The results show that Cu has effect on the hot ductility, and the hot ductility of 304HC stainless steel decrease with the increase of content of Cu. The deformation temperature also has much effect on the hot ductility, the suitable deformation temperature are 1100-1200℃. The reason of it is that the Cu rich chemical compounds were precipitated from austenite phase during cooling. The Cu rich chemical compounds are brittle substance such as Cu2S, Cu2O and ε-Cu etc.

关键词： 304HC stainless steel hot ductility brittle compounds precipi- tation mathematical model resistance to deformation

MECHANICAL STABILIZATION OF DEFORMED AUSTENITEDURING CONTINUOUS COOLING TRANSFORMATION IN AC-Mn-Cr-Ni-Mo pLASTIC DIE STEEL

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Acta Metallurgica Sinica(English Letters) 1998年第2期11卷 93-99页

作者： D.S.Liu G.D.Wang x.H.Liu G.Z.cui Northeastern Univ Shenyang China

The influence of prior austenite deformed at different temperature on the subsequent continuous cooling bainitic transformation has been investigated in an C-Ma-Cr-Ni-Mo plastic die steel. The results show that the prior deformation in low temperature region of austenite retards significantly the bainitic transformation. For the same continuous cooling schedule, as austenite deformed at lower temperature, the quantity of the classical sheaf-like bainite becomes less. The present results show that severe deformation leads to mechanical stabilization of austenite and causes the difficulty of bainitic ferrite propagation into the austenite.

关键词： plastic die steel deformed austenite continuous cooling bainitic transformation mechanical stabilization of austenite

IMpROVEMENT OF CARBIDE MORpHOLOGY ANDMECHANICAL pROpERTIES OF Cr12MoV STEELS

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Acta Metallurgica Sinica(English Letters) 2000年第5期13卷 1053-1058页

作者： cui, x.H. Jiang, Q.C. Wang, S.Q. He, Z.M. Sch. of Mat. Sci. and Eng. Jilin Univ. of Technol. Changchun 130025 China

Compared with conventional cast Cr12MoV steel and forged Cr12MoV steels, carbide morphology and properties of modified cast Cr12MoV steels were investigated by performing hardness test, impact test, fracture toughness test, fatigue crack propagation test, metallographic examination and quantitatively metallographic analysis. The results indicate that the carbide morphology in modified cast steel is characterized by uniformly-distributed granular carbide, which is different from that of conventional cast steel, but similar to that of forged steel. the impact toughness of modified cast steel is distinctly increased to 12.75 J/cm2 from 6.8 J/cm2 in the conventional cast steel with networked carbide, because of carbide granulation. Furthermore, The fracture toughness and fatigue-crack-propagation threshold of modified cast steel are not only higher than that of the conventional cast steel, but also higher than that of the forged steels.

关键词： Alloys Carbides Mechanical properties Morphology