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学者姓名：刘超
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Abstract ：
本发明公开了一种风力发电机双向负刚度阻尼增效系统，涉及风力发电机技术领域，包括伸臂牛腿、拉索、支撑梁、预压弹簧、伸臂桁架、铰接柱、底座、阻尼器和铰支座，借助伸臂牛腿将风机塔筒上部转动变形转化为伸臂牛腿端部竖向位移，实现第一重放大效应；伸臂牛腿端部竖向位移借助拉索传递带动铰接柱绕底部的底座转动，进而转化为更大的伸臂桁架端部竖向位移，实现第二重放大效应；铰接柱转动带动预压弹簧转动，从而释放预压弹簧的预压力，并推动铰接柱和伸臂桁架进一步向着转动方向运动，产生了负刚度力，进一步地放大阻尼器的变形，实现第三重放大效应。本发明能够有效控制外部荷载作用下风机任意水平方向的不利振动，便于安装于风机塔筒内部。
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| GB/T 7714 | 王萌 , 刘超 , 王丕光 et al. 一种风力发电机双向负刚度阻尼增效系统 : CN202311107754.2[P]. | 2023-08-31 . |
| MLA | 王萌 et al. "一种风力发电机双向负刚度阻尼增效系统" : CN202311107754.2. | 2023-08-31 . |
| APA | 王萌 , 刘超 , 王丕光 , 杜修力 . 一种风力发电机双向负刚度阻尼增效系统 : CN202311107754.2. | 2023-08-31 . |
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本发明公开了一种针对既有隔震结构的多模式频率无关附加隔震系统，属于工程结构隔震领域，包括负刚度系统和环簧系统，负刚度系统包括T形杆和预压弹簧，T形杆的顶端与上部结构基础铰接，T形杆的底端与基础地面铰接，T形杆的两侧端分别通过一个预压弹簧与固定在上部结构基础上的竖挡板连接；环簧系统包括两个环簧装置，两个环簧装置均包括滑动台、三角挡板、竖杆、内杆和环簧组，环簧组包括交替堆叠设置的外环和内环。本发明采用上述结构的针对既有隔震结构的多模式频率无关附加隔震系统，以被动控制的方式实现多种频率无关的附加阻尼滞回形式，可针对控制震后残余变形、隔震层变形、上部结构地震响应等差异化隔震目标提供有效性能提升方案。
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| GB/T 7714 | 王萌 , 刘超 , 杜修力 et al. 一种针对既有隔震结构的多模式频率无关附加隔震系统 : CN202311156536.8[P]. | 2023-09-08 . |
| MLA | 王萌 et al. "一种针对既有隔震结构的多模式频率无关附加隔震系统" : CN202311156536.8. | 2023-09-08 . |
| APA | 王萌 , 刘超 , 杜修力 , 胡书岭 . 一种针对既有隔震结构的多模式频率无关附加隔震系统 : CN202311156536.8. | 2023-09-08 . |
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本发明公开了一种高层建筑结构被动式复位刚度消能伸臂体系，属于高层建筑结构振动控制技术领域，包括核心筒、伸臂桁架、外框架柱和被动式复位刚度阻尼器，被动式复位刚度阻尼器包括油缸、活塞、槽形杆和旁通回路，活塞包括水平塞体和竖直杆体，水平塞体将油缸分为上腔室和下腔室，竖直杆体的上下两端与外框架柱铰接，竖直杆体的两端与槽形杆的两端连接，槽形杆上设有齿条；旁通回路的两端分别与上腔室和下腔室相连通，且旁通回路上设有常闭旁通阀，常闭旁通阀的摆针抵接在齿条的凹槽内。本发明以被动控制的方式实现了刚度的复位，克服了现有主动/半主动控制方式需要外部能量输入的问题，提高了对超高层建筑结构动力响应控制的可靠性和消能能力。
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| GB/T 7714 | 王萌 , 刘超 , 杜修力 . 一种高层建筑结构被动式复位刚度消能伸臂体系 : CN202311107758.0[P]. | 2023-08-31 . |
| MLA | 王萌 et al. "一种高层建筑结构被动式复位刚度消能伸臂体系" : CN202311107758.0. | 2023-08-31 . |
| APA | 王萌 , 刘超 , 杜修力 . 一种高层建筑结构被动式复位刚度消能伸臂体系 : CN202311107758.0. | 2023-08-31 . |
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The evolution of financial structure is not only a persistent issue but also a key factor affecting the financial risk. Concerns over the financial structure evolution and risk prevention have been voiced, but studies documented the interaction between financial risk and financial structure are still in their infancy. Therefore, this study investigates it by using detrended cross-correlation analysis, its multifractal asymmetric version, and detrended cross-correlation based on time-delay. Empirical research finds that the market-based financial structure increases financial risk in China. The characteristics of financial risk and financial structure are asymmetry, multifractal, bidirectional transmission, and nonlinear causality. The financial structure's influence on financial risk is strengthened within 15 months, while financial risk's influence on the financial structure strengths within 7 months. These findings support financial supervisory authorities to seek effective strategies to facilitate the evolution of the financial structure and establish a more stable financial system.(c) 2022 Elsevier B.V. All rights reserved.
Keyword ：
Macro-micro prudential supervision Macro-micro prudential supervision Detrended cross-correlation analysis Detrended cross-correlation analysis Financial risk Financial risk Financial structure Financial structure
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| GB/T 7714 | Liu, Chao , Fan, Yixin , Xie, Qiwei et al. Market-based versus bank-based financial structure in China: From the perspective of financial risk [J]. | STRUCTURAL CHANGE AND ECONOMIC DYNAMICS , 2022 , 62 : 24-39 . |
| MLA | Liu, Chao et al. "Market-based versus bank-based financial structure in China: From the perspective of financial risk" . | STRUCTURAL CHANGE AND ECONOMIC DYNAMICS 62 (2022) : 24-39 . |
| APA | Liu, Chao , Fan, Yixin , Xie, Qiwei , Wang, Chao . Market-based versus bank-based financial structure in China: From the perspective of financial risk . | STRUCTURAL CHANGE AND ECONOMIC DYNAMICS , 2022 , 62 , 24-39 . |
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Abstract ：
利用分子动力学模拟研究了WC–Co硬质合金在不同条件下的摩擦过程，分析了晶粒尺寸、摩擦载荷和滑动速率等因素对硬质合金摩擦磨损行为的影响，从原子尺度揭示了硬质合金发生摩擦磨损的微观机制。结果表明，随晶粒尺寸增大，相比于晶粒转动，Co相和WC中的位错滑移逐渐在摩擦引起的塑性变形机制中起主导作用。摩擦载荷增大会导致易变形的Co粘结相被挤出表面而首先去除，通过减小晶粒尺寸可以抑制Co相的挤出–磨损机制，进而提高硬质合金的抗滑动磨损性能。滑动速率升高会降低磨损速率，主要原因是在高速滑动过程中，亚表层各相中位错的形核扩展缺乏持续的驱动应力，位错密度较低，WC不易发生断裂，Co相被挤出表面造成的磨损程度明显...
Keyword ：
硬质合金 硬质合金 分子动力学模拟 分子动力学模拟 位错 位错 磨损 磨损 塑性变形 塑性变形 摩擦 摩擦
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| GB/T 7714 | 娄鹤子 , 王海滨 , 刘雪梅 et al. WC–Co硬质合金摩擦磨损行为的分子动力学模拟 [J]. | 粉末冶金技术 , 2022 , 40 (05) : 471-478 . |
| MLA | 娄鹤子 et al. "WC–Co硬质合金摩擦磨损行为的分子动力学模拟" . | 粉末冶金技术 40 . 05 (2022) : 471-478 . |
| APA | 娄鹤子 , 王海滨 , 刘雪梅 , 吕皓 , 刘超 , 林亮亮 et al. WC–Co硬质合金摩擦磨损行为的分子动力学模拟 . | 粉末冶金技术 , 2022 , 40 (05) , 471-478 . |
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Abstract ：
The article selects socioeconomic data related to 146 prefecture-level cities included in nine city clusters from 2014 to 2018 to establish a city-level socioeconomic system in China. A sensitivity analysis of regional entrepreneurship and economic quality development based on system dynamics was conducted to explore the changes in regional entrepreneurship and economic quality development over time and their sensitivity factors. In this way, the dynamic evolution mechanism of the system can be portrayed, and the optimization of the system can be achieved through the coordination of the factors within the system. The article sets up three scenarios to explore the fluctuations in regional entrepreneurship and economic quality development when three sensitive factors, namely, business environment, financial services scale, and innovation environment, change. Findings: There are differences in the development of cities within city clusters. The business environment and high-quality economic development of the central cities within the city cluster are stronger than those of the non-central cities. Therefore, regions should focus on synergistic development within city clusters when formulating related policies. The variation of regional entrepreneurship development and economic quality development, after a factor in the system is changed, is asymmetric. Because the sensitivity of different urban clusters and the way they are affected by sensitive factors varies, the state should pay more attention to the adaptability of cities when formulating corresponding policy measures and adapt its policy measures to the sensitivity characteristics of each region according to local conditions.
Keyword ：
regional entrepreneurship regional entrepreneurship business environment business environment city cluster city cluster system dynamics system dynamics high-quality economic development high-quality economic development
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| GB/T 7714 | Guo, Ce , Liu, Chao , Xie, Qiwei et al. Regional Entrepreneurship, Business Environment, and High-Quality Economic Development: An Empirical Analysis of Nine Urban Agglomerations in China [J]. | FRONTIERS IN PSYCHOLOGY , 2022 , 13 . |
| MLA | Guo, Ce et al. "Regional Entrepreneurship, Business Environment, and High-Quality Economic Development: An Empirical Analysis of Nine Urban Agglomerations in China" . | FRONTIERS IN PSYCHOLOGY 13 (2022) . |
| APA | Guo, Ce , Liu, Chao , Xie, Qiwei , Lin, Xiaole . Regional Entrepreneurship, Business Environment, and High-Quality Economic Development: An Empirical Analysis of Nine Urban Agglomerations in China . | FRONTIERS IN PSYCHOLOGY , 2022 , 13 . |
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Abstract ：
Purpose Steered by upper echelon theory, this study aims to scrutinize the prevalence of project manager demographic factors (age, education and experience) in project sustainability management and project performance. Design/methodology/approach We used a sample of 209 project managers/supervisor/team leaders who were working in the projects of the China-Pakistan Economic Corridor (CPEC). Findings The results indicate that project manager demographic factors have a significant influence on project performance (except experience) and project sustainability management. Moreover, project sustainability management partially mediates the relationship between age, education and project performance while it fully mediates the path between experience and project performance. Practical implications The research recommends senior, high educated and experienced managers for CPEC who promote sustainability and gain high project performance. Originality/value A number of studies have been carried out to assess the relationship between top managers' attributes and environmental activities. However, so far, none of the studies has paid attention to the CPEC and projects working in Pakistan.
Keyword ：
Project sustainability management Project sustainability management SMEs SMEs Project performance Project performance CPEC CPEC Demographic attributes Demographic attributes Project managers Project managers Project manager attributes Project manager attributes
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| GB/T 7714 | Hashim, Muhammad Zaheer , Chao, Liu , Wang, Chao . The role of project managers' attributes in project sustainability management and project performance under China-Pakistan economic corridor [J]. | CHINESE MANAGEMENT STUDIES , 2022 , 16 (3) : 708-731 . |
| MLA | Hashim, Muhammad Zaheer et al. "The role of project managers' attributes in project sustainability management and project performance under China-Pakistan economic corridor" . | CHINESE MANAGEMENT STUDIES 16 . 3 (2022) : 708-731 . |
| APA | Hashim, Muhammad Zaheer , Chao, Liu , Wang, Chao . The role of project managers' attributes in project sustainability management and project performance under China-Pakistan economic corridor . | CHINESE MANAGEMENT STUDIES , 2022 , 16 (3) , 708-731 . |
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Abstract ：
An in-situ reaction strategy to synthesize W-Cu based nanocomposite co-doped with Cr and WC was proposed, and the resultant multicomponent nanocrystalline bulk has a homogeneous distribution of various phases. As compared to the conventional coarse-grained W-Cu composite, the prepared nanocrystalline W-Cu based composite exhibits fourfold hardness and twofold wear resistance. The enhancement of the wear resistance is attributed to the restricted formation and delamination of the mechanically mixed layer and the increased strain gradient induced by the hard phases on the worn surface. The formation of the refined nanostructure with well-aligned crystallographic orientation relationship results in significant hardening of the worn surface. The present work opens up new opportunities to achieve superior hardness and wear resistance of metal matrix composites based on design and fabrication of multicomponent nanostructures. (C) 2021 Elsevier B.V. All rights reserved.
Keyword ：
In-situ reaction In-situ reaction Wear resistance Wear resistance Multicomponent composite Multicomponent composite Hardness Hardness
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| GB/T 7714 | Li, Yurong , Hou, Chao , Cao, Lijun et al. Excellent wear resistance of multicomponent nanocrystalline W-Cu based composite [J]. | JOURNAL OF ALLOYS AND COMPOUNDS , 2021 , 861 . |
| MLA | Li, Yurong et al. "Excellent wear resistance of multicomponent nanocrystalline W-Cu based composite" . | JOURNAL OF ALLOYS AND COMPOUNDS 861 (2021) . |
| APA | Li, Yurong , Hou, Chao , Cao, Lijun , Liu, Chao , Liang, Shuhua , Tang, Faiwei et al. Excellent wear resistance of multicomponent nanocrystalline W-Cu based composite . | JOURNAL OF ALLOYS AND COMPOUNDS , 2021 , 861 . |
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Abstract ：
In this study, based on the National Centers for Environmental Prediction (NCEP) Final Analysis (FNL) data, the reliability and performances of their application on clean days and polluted days (based on the PM2.5 mass concentrations) in Beijing were assessed. Conventional meteorological factors and diagnostic physical quantities from the NCEP/FNL data were compared with the L-band radar observations in Beijing in the autumns and winters of 2017-2019. The results indicate that the prediction reliability of the temperature was the best compared with those of the relative humidity and wind speed. It is worth noting that the relative humidity was lower and the near-surface wind speed was higher on polluted days from the NCEP/FNL data than from the observations. As far as diagnostic physical quantity is concerned, it was revealed that the temperature inversion intensity depicted by the NCEP/FNL data was significantly lower than that from the observations, especially on polluted days. For example, the difference in the temperature inversion intensity between the NCEP/FNL data and the observation ranged from -0.56 to -0.77 degrees C on polluted days. In addition, the difference in the wind shears between the NCEP/FNL reanalysis data and the observations increased to 0.40 m/s in the lower boundary layer on polluted days compared with that on clean days. Therefore, it is suggested that the underestimation of the relative humidity and temperature inversion intensity, and the overestimation of the near-surface wind speed should be seriously considered in simulating the air quality in the model, particularly on polluted days, which should be focused on more in future model developments.
Keyword ：
diagnostic physical quantity diagnostic physical quantity clean day clean day polluted day polluted day FNL FNL NCEP NCEP conventional meteorological factor conventional meteorological factor
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| GB/T 7714 | Liu, Chao , Guo, Jianping , Zhang, Bihui et al. A Reliability Assessment of the NCEP/FNL Reanalysis Data in Depicting Key Meteorological Factors on Clean Days and Polluted Days in Beijing [J]. | ATMOSPHERE , 2021 , 12 (4) . |
| MLA | Liu, Chao et al. "A Reliability Assessment of the NCEP/FNL Reanalysis Data in Depicting Key Meteorological Factors on Clean Days and Polluted Days in Beijing" . | ATMOSPHERE 12 . 4 (2021) . |
| APA | Liu, Chao , Guo, Jianping , Zhang, Bihui , Zhang, Hengde , Guan, Panbo , Xu, Ran . A Reliability Assessment of the NCEP/FNL Reanalysis Data in Depicting Key Meteorological Factors on Clean Days and Polluted Days in Beijing . | ATMOSPHERE , 2021 , 12 (4) . |
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Abstract ：
In this study, CaF2 was introduced into WC-Co to prepare bulk self-lubricating cemented carbides by sinter-HIP. The studied compositions were WC-12Co with no more than 20 vol% CaF2 additions. The effects of CaF2 on the tribological behaviors and mechanical properties of cemented carbides were investigated. It was found that the prepared self-lubricating cemented carbides with CaF2 were nearly fully dense and CaF2 would refine the WC grains. Although CaF2 could not obviously enhance the mechanical properties of cemented carbides, it improved their tribological behaviors remarkably. The friction coefficient and wear loss during dry sliding could be reduced noticeably by the introduction of CaF2. The mechanism of tribological performance improvement was attributed to the lubricating film formation during the friction process. It would avoid direct contact between the friction counterparts and prevent severe wear of the materials. This study provides a new promising approach for cemented carbides to achieve better tribological performances by the self-lubrication design.
Keyword ：
Tribological performance Tribological performance Mechanical properties Mechanical properties Cemented carbide Cemented carbide Self-lubrication Self-lubrication
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| GB/T 7714 | Liu, Shuai , Lu, Hao , Liu, Chao et al. Tribological behavior of WC-Co-CaF2 self-lubricating cemented carbides [J]. | INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS , 2021 , 96 . |
| MLA | Liu, Shuai et al. "Tribological behavior of WC-Co-CaF2 self-lubricating cemented carbides" . | INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS 96 (2021) . |
| APA | Liu, Shuai , Lu, Hao , Liu, Chao , Liu, Xuemei , Wang, Haibin , Song, Xiaoyan . Tribological behavior of WC-Co-CaF2 self-lubricating cemented carbides . | INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS , 2021 , 96 . |
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