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| 1 | Motion Planning for Vibration Reducing of Free-floating Redundant Manipulators Based on Hybrid Optimization Approach显示文摘这份报纸涉及最佳的运动为颤动减少免费漂浮的灵活冗余的操纵者计划。第一,系统的动态模型基于 Lagrange 方法被建立,并且为颤动减少计划模型的运动被建议。第二,采用高斯 pseudospectral 方法(GPM ) 的一条混合优化途径和直接射击方法(DSM ) ,被建议解决计划的运动问题。在这条途径,计划问题的运动用 GPM 被转变成一个非线性的参数优化问题,并且基因算法(GA ) 被采用定位近似解决方案。随后,一个优化模型基于 DSM 被提出,并且顺序的二次的编程(SQP ) 算法被用来获得精确解决方案,与象一个起始的引用解决方案的近似解决方案。最后,几数字模拟被调查,并且灵活连接的全球颤动或剩余颤动被被混合优化途径获得的联合轨道显然减少。数字模拟结果显示途径对计划颤动减少的问题的运动有效、稳定。 | LIAO Yihuan LI Daokui TANG Guojin | 2011 | Chinese Journal of Aeronautics2011，24，4： | 8 |
| 2 | Translational zero-disturbance curve and its application to zero-disturbance motion planning of space manipulator system显示文摘A new motion planning method is proposed for enlarging the solvable space of zero-disturbance motion planning for the space free-floating manipulator system. First, a class of translational zero-disturbance curves is put forward for the first time. The equation of translational zero-disturbance curve is deduced using the nonholonomic constraint of the manipulator system, and its characteristics are also discussed. Second, the zero-disturbance curve of the whole operating process is divided into two segments. The first one is a translational zero-disturbance curve which passes through the target point. Another one is a common zero-disturbance curve which passes through the original point and intersects with the translational zero-disturbance curve. Finally, the common zero-disturbance curve is obtained by a hybrid programming strategy based on Gauss pseudo-spectral method (GPM) and direct shooting method (DSM). The numerical simulation results indicate that the proposed method is effective, and that the solvable space of this method almost covers the whole work space of the manipulator system. | LIAO YiHuan LI DaoKui TANG GuoJin | 2011 | Science China(Technological Sciences)2011，54，5： | 4 |
| 3 | SPECIAL ISSUE: DISTRIBUTION OF NATIONAL INCOME IN A TRANSITIONAL ECONOMY Changes in the labor share of GDP: a U-shaped curve显示文摘本文的目的在于探讨经济发展过程中,劳动份额在初次分配中演变的一般规律,以及当前导致中国初次分配中劳动份额不断下降的结构性因素。我们的研究发现,在世界各国的经济发展过程中,在初次分配中劳动份额变化趋势呈现U型规律,即劳动份额先下降后上升,转折点约为人均GDP6000美元(2000年购买力平价)。我们提出了一个解释u型规律的理论模型。这一发现为库兹涅茨“倒U曲线假说”提供了更深层次的解释。我们还发现,中国初次分配中劳动份额的变动趋势是基本符合这一规律的。除此之外,影响我国劳动份额的因素还包括产业结构的以及劳动者相对谈判能力的变化。这些发现意味着,中国经济未来两年在初次分配中劳动份额可能会进入上升通道,中央政府为应对世界性金融危机而采取的一些政策性、结构性调整则有助于加快这一进程。 | David Daokui Li Liu Linlin Wang Hongling | 2009 | Social Sciences in China2009，30，4： | 3 |
| 4 | Institutional entrepreneurs显示文摘 | Li Daokui Feng Junxin Jiang Hongping | 2006 | American Economic Review2006，96，2： | 1 |
| 5 | Institutional Entrepreneurs显示文摘 | David Daokui Li Junxin Feng Hongping Jiang | 2005 | Preliminary draft2005，33，： | 1 |
| 6 | Institutional Entrepreneurs 显示文摘 | David Daokui Li Junxin Feng Hongping Jiang | 2006 | American Economic Review2006，96，2： | 1 |
| 7 | Biodegradation of Mg-14Li alloy in simulated body fluid: A proof-of-concept study显示文摘High corrosion kinetics and localised corrosion progress are the primary concerns arising from the clinical implementation of magnesium(Mg)based implantable devices.In this study,a binary Mglithium(Li)alloy consisting a record high Li content of 14%(in weight)was employed as model material aiming to yield homogenous and slow corrosion behaviour in a simulated body fluid,i.e.minimum essential medium(MEM),in comparison to that of generic Mg alloy AZ31 and biocompatible Mg-0.5Zn-0.5Ca counterparts.Scanning electron microscopy examination reveals single-phase microstructural characteristics of Mg-14Li(b-Li),whilst the presence of insoluble phases,cathodic to a-Mg matrix,in AZ31 and Mg-0.5Zn-0.5Ca.Though slight differences exist in the corrosion kinetics of all the specimens over a short-term time scale(no longer than 60 min),as indicated by potentiodynamic polarisation and electrochemical impedance spectroscopy,profound variations are apparent in terms of immersion tests,i.e.mass loss and hydrogen evolution measurements(up to 7 days).Cross-sectional micrographs unveil severe pitting corrosion in AZ31 and Mg-0.5Zn-0.5Ca,but not the case for Mg-14Li.X-ray diffraction patterns and X-ray photoelectron spectroscopy confirm that a compact film(25 mm in thickness)consisting of lithium carbonate(Li2CO3)and calcium hydroxide was generated on the surface of Mg-14Li in MEM,which contributes greatly to its low corrosion rate.It is proposed therefore that the single-phase structure and formation of protective and defect-free Li2CO3 film give rise to the controlled and homogenous corrosion behaviour of Mg-14Li in MEM,providing new insights for the exploration of biodegradable Mg materials. | Xiao-Bo Chen Chuanqiang Li Daokui Xu | 2018 | Bioactive Materials2018，3，1： | 1 |
| 8 | Effects of icosahedral phase on mechanical anisotropy of as-extruded Mg-14Li (in wt%) based alloys显示文摘Through investigating and comparing microstructure and crystallographic texture of as-extruded Mg-14Li and Mg-14Li-6Zn-1Y(in wt%)alloys,the differences in their mechanical anisotropy were investigated.It revealed that the formation of I-phase(Mg3Zn6Y,icosahedral structure)can effectively refine grain size.Moreover,compared with Mg-14Li alloy,the texture type of Mg-14Li-6Zn-1Y alloy changed slightly,but its texture intensity decreased remarkably.As a result,the stronger texture contributed to the'normal'mechanical anisotropy of Mg-14Li alloy with higher tensile strength and a lower elongation ratio along transverse direction(TD)than those along extrusion direction(ED).However,for Mg-14Li-6Zn-1Y alloy,the zonal distribution of I-phase particles along ED caused'abnormal'mechanical anisotropy,i.e.higher tensile strength and better plasticity along ED. | Chuanqiang Li Daokui Xu Baojie Wang Liyuan Sheng Ruizhi Wu Enhou Han | 2019 | Journal of Materials Science & Technology2019，35，11： | 1 |
| 9 | Institutional Entrepreneurs 显示文摘 | LI DAVID DAOKUI JUNXIN FENG Hongping Jiang | 2006 | American Economic Review2006，96，2： | 1 |
| 10 | Buckling analysis of plate with built-in rectangular delamination by strip distributed transfer function method 显示文摘 | Daokui Li Guojin Tang Jianping Zhou | 2005 | Acta Mechanica2005，176，3： | 1 |
| 11 | How Did China Maintain Macroeconomic Stability During 1978-2018?显示文摘In this paper,we analyze the role of macroeconomic management in developing countries'economic take-off and structural transformation.We argue that developing countries face three leading challenges:market immaturity,lack of a developed financial system,and severe information asymmetry between international investors and domestic players.If not properly dealt with,these challenges can lead to macroeconomic volatility and fragility in economic development.Therefore,the government must intervene appropriately to address these challenges.By analyzing China s experiences in the era of reform and opening up(1978-2018),we find three important lessons:(i)It is important for the government to facilitate the entry and exit of enterprises in macroeconomic cycles,relying not only on market signals but also on administrative orders and measures of institutional reform;(ii)Financial reforms should be implemented in order to promote financial deepening and channel savings into investment;and(iii)The government should carefully manage capital account liberalization in order to preserve financial stability while promoting foreign investment,international trade,and industrial upgrading. | Ming Feng David Daokui Li Shuyu Wu | 2021 | China & World Economy2021，29，3： | 1 |
| 12 | Design of Multi-Coupled Laminates with Extension-Twisting Coupling for Application in Adaptive Structures显示文摘The multiple coupling of composite laminates has a unique advantage in improving the macro mechanical properties of composite structures.A total of three hygro-thermally stablemulti-coupled laminates with extensiontwisting coupling were presented,which were conducive to the formation of passive adaptive structures.Then,the multi-coupled laminates were used to design the bending-twisting coupled box structure,in which the configuration of laminate and box structure could be extended to variable cross-section configuration.The optimal design of stacking sequence was realized,the optimization objectives of which were to maximize bending-twisting coupling of box structure and extension-twisting coupling of laminate,respectively.The effects of multiple coupling on hygro-thermal stability,coupling,failure strength,buckling load,robustness and other comprehensive mechanical properties of laminates and box structures were analyzed by parametric modeling method.The results show that the extension-twisting coupling of laminate and the bending-twisting coupling of box structures can be greatly improved by 450%and 260%at maximum,respectively.Meanwhile,it would have a negative impact on the failure strength and buckling load,which,however,can be minimized by a reasonable paving method.Multicoupled laminates have good robustness,and the bending-twisting coupling helps improve robustness.Finally,the hygro-thermal stability and mechanical properties were verified by numerical simulation with finite element method. | Da Cui Daokui Li Shiming Zhou | 2022 | Computer Modeling in Engineering & Sciences2022，，1： | 0 |
| 13 | Shifting the Chinese Economy Towards New Drivers of Growth显示文摘 | Li Daokui | 2015 | Qiu Shi2015，7，3： | 0 |
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