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连续机组带钢跑偏的防偏及纠偏

机械工程师 2014年第9期 197-199页

作者：王明龙鄂世伟孟祥东徐科明中冶赛迪工程技术股份有限公司重庆401122

对连续机组中带钢的跑偏现象进行了分析,提出了防偏及纠偏措施,并对该措施进行了探讨分析。

关键词：连续机组带钢跑偏防偏纠偏

ALLIANCE-ROS:A Software Framework on ROS for Fault-Tolerant and Cooperative Mobile Robots

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Chinese Journal of Electronics 2018年第3期27卷 467-475页

作者： GUO Zhongyuan YANG Wenjing LI minglong YI Xiaodong CAI Zhongxuan wang Yanzhen State Key Laboratory of High Performance Computing College of Computer National University of Defense Technology

Programming control systems for mobile robots is complicated and time-consuming, due to three aspects, i.e., the robot behavior coordination, the distributed multi-robot cooperation and the robot software reusability. Subsumption model is a robust control architecture for mobile robots. ALLIANCE model extends it to multirobot systems, which is a fully distributed, fault-tolerant model. Robot operating system(ROS) provides a lot of reusable robot modules. By combining the above three, we propose a software framework named ALLIANCE-ROS for developing fault-tolerant cooperative multi-robot systems with abundant software resources available. We encapsulate the ROS facilities to build the framework *** also use some high-performance plugin-based mechanism to optimize the bottom of the framework. One may use the framework-provided API conveniently to construct single-robot and multi-robot applications with all ROS resources available. This work is demonstrated by three application cases including an autonomous roving robot, a security patrol robot and multiple patrol robots. They are constructed and tested in both the simulated and the real environment. The experimental results validate the usability and availability of ALLIANCE-ROS.

关键词： Software framework Mobile robots Cooperative robots Fault-tolerance ALLIANCE-ROS

Impact of the Three Gorges Project operation on the water exchange between Dongting Lake and the Yangtze River

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International Journal of Sediment Research 2017年第4期32卷 506-514页

作者： minglong Dai Jun wang Mingbo Zhang Xi Chen School of Hydropower & Information Engineering Huazhong University of Science and Technology Bureau of Hydrology Changjiang Water Resources Commission

The Three Gorges Project（TGP） is a world known project to utilize and manage the water resources of the Yangtze River. The reservoir stores water at the end of the flood season, and replenishes downstream reaches with water in dry seasons. In addition to such benefits, the TGP has irreversibly changed the hydrological process and the river-lake relation of the middle and lower reaches. In this paper, a hydrodynamic model was established to quantify the impact of the TGP’s operation on the water exchange between Dongting Lake and the Yangtze River during 2009-2013. The results indicated that:the operation of the TGP has considerably reduced the peak discharge and the flood volume of the main stream and the Dongting Lake area. The inflow volume from the Yangtze River to Dongting Lake via three outlets decreased by 1.9-3.5 billion m;/yr, while the outflow volume from Dongting Lake to the Yangtze River at Chenglingji increased by 0.3-1.6 billion m;in September and 0.4-0.6 billion m;in October,respectively. This research provides valuable information for flood control, irrigation, and water allocation in the middle and lower reaches of the Yangtze River, and serves as a typical case for investigating the impact of other hydropower projects around the world.

关键词： Three Gorges Project Yangtze River Dongting Lake Three outlets diversion Water exchange

基于人工智能(AI)语境下的音乐剧专业教学模式探究

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上海视觉 2024年第3期 127-131页

作者：王明龙上海视觉艺术学院上海201620

人工智能(Artificial Intelligence,简称AI)是一门跨学科的科学技术领域,其旨在设计和制造能够模拟、扩展甚至超越人类智能的系统或机器。人工智能的方法和理论包括机器学习、专家系统、自然语言处理、模式识别和计算机视觉等,人工智能... 详细信息

人工智能(Artificial Intelligence,简称AI)是一门跨学科的科学技术领域,其旨在设计和制造能够模拟、扩展甚至超越人类智能的系统或机器。人工智能的方法和理论包括机器学习、专家系统、自然语言处理、模式识别和计算机视觉等,人工智能技术目前在医疗、金融、制造业、自动驾驶、娱乐和市场预测等领域具有广泛应用前景。然而,在音乐剧专业教学中,引入人工智能技术辅助教学虽然有助于个性化教学、即时反馈,同时也面临一些不成熟,包括人工智能系统难以完全理解每位学生的独特需求和学习风格,评估中存在的算法偏见以及在实际教学环境中遇到的技术难题等,为克服这些问题,需要改进算法以提高个性化水平、引入额外的教学策略以丰富教学体验,甚至重新设计人工智能工具以更好地满足音乐剧专业教学的需求。

关键词：人工智能音乐剧专业教学辅助

基于三维地质模型的地下空间地质环境条件适宜性评价——以深圳湾超级总部基地片区为例

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华中师范大学学报（自然科学版） 2024年第5期58卷 551-560页

作者：程靖清李炎桂姚华舟钱静张洪岩王明龙蔡建斯张婉秋杜子纯中国科学院深圳先进技术研究院广东深圳518055 深圳市自然资源和不动产评估发展研究中心(深圳市地质环境监测中心) 广东深圳518040 中国地质调查局武汉地质调查中心武汉430205 中国地质大学地质过程与矿产资源国家重点实验室武汉430074 深圳市工勘岩土集团有限公司广东深圳510635

城市地下空间地质环境条件适宜性评价对于有效利用地下空间至关重要.该研究以深圳市南山区深圳湾超级总部基地片区为例,构建了以地质环境条件为基础,考虑片区既有地面、地下建筑开发现状的地下空间地质环境条件适宜性三维评价体系.该体... 详细信息

城市地下空间地质环境条件适宜性评价对于有效利用地下空间至关重要.该研究以深圳市南山区深圳湾超级总部基地片区为例,构建了以地质环境条件为基础,考虑片区既有地面、地下建筑开发现状的地下空间地质环境条件适宜性三维评价体系.该体系基于三维数据的特点和其他实际要求,体系构建主要包含4个步骤:1)利用多源地质数据的隐式三维地质建模方法建立三维地质模型;2)根据现有数据考虑当地地质条件,建立三维评价指标体系;3)利用三维空间分析方法,从三维地质模型中构建三维评价数据集;4)使用多级指数叠加法进行综合评价.结果表明,深圳湾超级总部基地片区地质环境条件适宜性总体较好,深层地质环境条件适宜性优于中层和浅层.该评价体系能够有效地整合二维和三维地质信息,给出更合理的评价结果,并提高结果深度方向上的分辨率.评价结果可以为深圳湾超级总部基地及其他重点片区地下空间规划利用提供有价值的参考.

关键词：地下空间利用适宜性评价评价体系三维评价模型深圳市

Radical and(photo)electron transfer induced mechanisms for lignin photo-and electro-catalytic depolymerization

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Green Energy & Environment 2023年第2期8卷 383-405页

作者： Kejia Wu minglong Cao Qiang Zeng Xuehui Li School of Chemistry and Chemical Engineering State Key Laboratory of Pulp&Paper EngineeringSouth China University of TechnologyGuangzhou510640China

As one of the three major components of woody biomass,lignin is a kind of natural organic polymer and the only abundant natural renewable resource with aromatic *** catalysis induced depolymerization is an important and effective approach for lignin *** particular,photocatalysis and electrocatalysis show great potential in accurately activating C-O/C-C bonds,which is a critical point of selective cleavage of *** this contribution,we focus on radical and(photo)electron transfer induced reaction mechanisms of the photo(electro)catalytic depolymerization of ***,the general situation of Carbon-centered radicals and active oxygen species mediated lignin conversion has been *** the mechanisms for(photo)electron transfer mediated lignin depolymerization have been *** the end of this review,the challenges and opportunities of photo(electro)catalysis in the applications of lignin valorization have been forecasted.

关键词： Lignin Photocatalysis Electrocatalysis Depolymerization Reaction mechanism

Suppressing nonlinear aeroelastic response of laminated composite panels in supersonic airflows using a nonlinear energy sink

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Chinese Journal of Aeronautics 2021年第2期34卷 376-385页

作者： Jian ZHOU minglong XU Zhichun YANG Yingsong GU State Key Laboratory for Strength and Vibration of Mechanical Structures School of Aerospace EngineeringXi'an Jiaotong UniversityXi'an 710049China School of Aeronautics Northwestern Polyteclmical UniversityXi'an 710072China

This paper proposes using a Nonlinear Energy Sink(NES) to suppress the nonlinear aeroelastic response of laminated composite panels in supersonic airflows. Relevant aeroelastic equations are established using Hamilton’s principle and a finite element approach, drawing upon Von Karman’s large deflection theory and first order piston theory. The idea of the NES suppression region is proposed and the effects of NES parameters on the NES suppression region are studied in detail. The results show that the nonlinear aeroelastic responses of the panel can be completely suppressed by the Transient Resonance Capture(TRC);the appropriate NES parameter values can increase the critical dynamic pressure for flutter and suppress the nonlinear aeroelastic response effectively. Increasing the mass ratio of the NES can improve the NES suppression region;the nonlinear stiffness coefficient and damping of the NES within a specific range can suppress the nonlinear aeroelastic response. The most effective installation position for a NES is in a specific region behind the center-line of the panel in the direction of the airflow.

关键词： Aeroelasticity Laminated composite panel Nonlinear dynamics Nonlinear energy sink Panel flutter Passive suppression

Microstructure evolution,mechanical properties and creep mechanisms of Mg-12Gd-1MM-0.6Zr(wt%)magnesium alloy

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Journal of Rare Earths 2021年第5期39卷 600-608页

作者： Bibo Li Kui Zhang Guoliang Shi Kaikun wang Yongjun Li Xinggang Li minglong Ma Jiawei Yuan State Key Laboratory of Nonferrous Metals and Process GRINM Group Co.Ltd.(GRINM)Beijing 100088China School of Materials Science and Engineering University of Science and Technology BeijingBeijing 100083China GRIMAT Engineering Institute Co. Ltd.Beijing 101407China General Research Institute for Nonferrous Metals Beijing 100088China

In this research,the microstructure evolution,mechanical properties,and creep mechanisms of Mg-12 Gd-1 MM-0.6 Zr(wt%)alloy under different conditions were systematically studied using scanning electron microscopy(SEM),transmission electron microscopy(TEM),X-ray diffraction(XRD),and tensile creep *** the microstructure of the as-cast sample,the average grain size is about 42μm,and the eutectic compounds were determined to be Mg_(5)(Gd_(0.8)MM_(0.2)).During homogenization,these eutectic compounds gradually dissolve,and Mg_(12)MM particles are *** hot extrusion,complete dynamic recrystallization(DRX)occurs,resulting in equiaxial grains with an average grain size of about 12μm and the formation of streamlines consisting of Mg_(12)MM particles along the extrusion direction(ED).After T5 treatment(225℃for 7 h),a large number ofβ'(Mg_(7)Gd)phases are precipitated on the{11-20}αhabit plane and are interconnected,forming an interlaced network *** ultimate tensile strength(R_(m)=405 MPa)and yield strength(R_(P0.2)=288 MPa)of the T5 sample are significantly higher than those of the as-extruded sample(R_(m)=289 MPa,R_(P0.2)=185 MPa),but the elongation(A=4%)was remarkably lower than that of the as-extruded sample(A=18%).When crept at225℃under 100 MPa,the steady-state creep rates of the as-cast,as-extruded,and T5 samples are1.59×10^(-8),1.08×10^(-8),and 1.40×10^(-8)s^(-1),respectively,and their total strains within 100 h are respectively breaking,0.81%,and 0.92%,indicating that the as-extruded alloy exhibits the best creep *** analysis reveals that,during the creep process of the T5 sample,theβ'particles coarsen and the precipitate-free zones(PFZs)widen,which increase the steady-state creep rate and the total strain within 100 h as compared with the as-extruded sample.

关键词： Magnesium alloy Extrusion Creep mechanism Microstructure evolution Precipitation Rare earths

Microstructures and strengthening mechanisms of Mg-8.2Gd-4.6Y-1.5Zn-0.4Zr alloy containing LPSO,β’ and γ type phases

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Journal of Rare Earths 2020年第10期38卷 1119-1125,I0004页

作者： Xiangsheng Xia Kui Zhang minglong Ma Ting Lie State Key Laboratory of Non-Ferrous Metals and Processes GRINM Co.LtdBeijing 700088China GR1MAT Engineering Institute Co. Ltd.Beijing 101400China General Research Institute for Non-Ferrous Metals Beijing 100088China Southwest Technology and Engineering Research Institute Chongqing 400039China National Center of Analysis and Testing for Nonferrous Metals and Electronic Materials China United Test&Certification Co.Ltd.GRINM Group Co.Ltd.Beijing 100088China

The microstructures and strengthening mechanisms of the Mg-8.2 Gd-4.6 Y-1.5 Zn-0.4 Zr(wt%) alloy with long-period stacking ordered(LPSO),β’ and γ type phases were systematically *** results show that the LPSO with lamellar and block structures forms near the grain *** grains are clearly refined,and the 18 R LPSO phase is oriented along the extrusion direction after *** particles also precipitate from the Mg matrix *** extruded alloy exhibits a remarkable agehardening response,and mechanical properties,with a tensile strength(TS) of 449 MPa,yield strength(YS) of 362 MPa,and elongation of 7.9% obtained in the peak-aged *** strengthening mechanisms of the alloy in different states are *** boundary and precipitation strengthening are the main strengthening mechanisms for the peak-aged alloy.

关键词： Mg-Cd-Y-Zn-Zr alloy LPSO phase Microstructure Mechanical properties Strengthening mechanism Rare earths