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南昌工程学院学报 2021年第6期40卷 22-31页

作者：郭彦利胡鹏文姚行友南昌工程学院土木与建筑工程学院江西南昌330099 南昌工程学院江西省水利土木工程基础设施安全重点实验室江西南昌330099

为研究腹板开矩形孔冷弯薄壁卷边槽钢轴压柱畸变屈曲性能和承载力设计方法,对不同开孔尺寸、不同截面的冷弯薄壁卷边槽钢柱进行了轴压承载力试验。试验结果表明由于试件宽厚比较大,易发生畸变屈曲或局部与畸变相关屈曲;与未开孔试件相比... 详细信息

为研究腹板开矩形孔冷弯薄壁卷边槽钢轴压柱畸变屈曲性能和承载力设计方法,对不同开孔尺寸、不同截面的冷弯薄壁卷边槽钢柱进行了轴压承载力试验。试验结果表明由于试件宽厚比较大,易发生畸变屈曲或局部与畸变相关屈曲;与未开孔试件相比,开孔试件的承载力有所降低,且随着开孔尺寸的增大而逐渐降低。采用ABAQUS有限元程序对试件进行了有限元分析,分析结果与试验结果吻合良好。表明采用有限元分析此类开孔构件是准确和可行的。进而对腹板开矩形孔冷弯薄壁卷边槽钢柱的弹性畸变屈曲性能进行有限元分析,在此基础上给出腹板开单矩形孔和开多矩形孔时的畸变屈曲(部分加劲板件)系数的折减公式。最后,基于腹板开矩形孔冷弯薄壁卷边槽钢轴压柱的试验和有限元分析给出其承载力建议计算方法,对比结果表明采用建议方法计算此类构件畸变屈曲承载力是精确和可行的。

关键词：冷弯薄壁型钢开孔构件矩形孔畸变屈曲相关屈曲

Two-dimensional materials for future information technology: status and prospects

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Science China(Information Sciences) 2024年第6期67卷 1-147页

作者： Hao QIU Zhihao YU Tiange ZHAO Qi ZHANG Mingsheng XU Peifeng LI Taotao LI Wenzhong BAO Yang CHAI Shula CHEN Yiqi CHEN hui-Ming CHENG Daoxin DAI Zengfeng DI Zhuo DONG Xidong DUAN Yuhan FENG Yu FU Jingshu GUO pengwen GUO Yue HAO Jun HE Xiao HE Jingyi hu Weida hu Zehua hu Xinyue huANG Ziyang huANG Ali IMRAN Ziqiang KONG Jia LI Qian LI Weisheng LI Lei LIAO Bilu LIU Can LIU Chunsen LIU Guanyu LIU Kaihui LIU Liwei LIU Sheng LIU Yuan LIU Donglin LU Likuan MA Feng MIAO Zhenhua NI Jing NING Anlian PAN Tian-Ling REN Haowen Shu Litao SUN Yue SUN Quanyang TAO Zi-Ao TIAN Dong WANG Hao WANG Haomin WANG Jialong WANG Junyong WANG Wenhui WANG Xingjun WANG Yeliang WANG Yuwei WANG Zhenyu WANG Yao WE... School of Electronic Science and Engineering Nanjing University School of Integrated Circuits Interdisciplinary Research Center for Future Intelligent Chips (Chip-X)Nanjing University School of Integrated Circuit Science and Engineering Nanjing University of Posts and Telecommunications State Key Laboratory of Infrared Physics Shanghai Institute of Technical Physics Chinese Academy of Sciences School of Physics and Key Lab of Quantum Materials and Devices of the Ministry of Education School of Electronic Science & EngineeringSoutheast University College of Integrated Circuits State Key Laboratory of Silicon and Advanced Semiconductor MaterialsZhejiang University Suzhou Laboratory State Key Laboratory of Integrated Chips and Systems School of MicroelectronicsFudan University Shaoxin Laboratory Department of Applied Physics The Hong Kong Polytechnic University Key Laboratory for Micro-Nano Physics and Technology of hunan Province College of Materials Science and EngineeringHunan University College of Integrated Circuits Zhejiang University Shenzhen Geim Graphene Center Shenzhen Key Laboratory of Layered Materials for Value-Added ApplicationsTsinghua-Berkeley Shenzhen Institute & Institute of Materials ResearchTsinghua Shenzhen International Graduate SchoolTsinghua University State Key Laboratory of Extreme Photonics and Instrumentation College of Optical Science and EngineeringInternational Research Center for Advanced PhotonicsZijingang CampusZhejiang University National Key Laboratory of Materials for Integrated Circuits Shanghai Institute of Microsystem and Information TechnologyChinese Academy of Sciences CAS Key Laboratory of Nanophotonic Materials and Devices & Key Laboratory of Nanodevices and Applications i-LabSuzhou Institute of Nano-Tech and Nano-Bionics (SINANO)Chinese Academy of Sciences College of Chemistry and Chemical Engineering Hunan University Key Laboratory of Quantum State Construction and Manipulation (Ministry of Education) Department of PhysicsRenmin University of China School

Over the past 70 years, the semiconductor industry has undergone transformative changes,largely driven by the miniaturization of devices and the integration of innovative structures and materials. Two-dimensional(2D) materials like transition metal dichalcogenides(TMDs) and graphene are pivotal in overcoming the limitations of silicon-based technologies, offering innovative approaches in transistor design and functionality, enabling atomic-thin channel transistors and monolithic 3D integration. We review the important progress in the application of 2D materials in future information technology, focusing in particular on microelectronics and optoelectronics. We comprehensively summarize the key advancements across material production, characterization metrology, electronic devices, optoelectronic devices, and heterogeneous integration on silicon. A strategic roadmap and key challenges for the transition of 2D materials from basic research to industrial development are outlined. To facilitate such a transition, key technologies and tools dedicated to 2D materials must be developed to meet industrial standards, and the employment of AI in material growth, characterizations, and circuit design will be essential. It is time for academia to actively engage with industry to drive the next 10 years of 2D material research.

关键词： two-dimensional (2D) materials information technology production technology standardization of characterization microelectronicdevices optoelectronic devices multi-functional integration

A Target Grabbing Strategy for Telerobot Based on Improved Stiffness Display Device

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IEEE/CAA Journal of Automatica Sinica 2017年第4期4卷 661-667页

作者： pengwen Xiong Xiaodong Zhu Aiguo Song Lingyan hu Xiaoping P.Liu Lihang Feng School of Information Engineering Nanchang University School of Instrumentation Science and Engineering Southeast University IEEE Department of Systems and Computer Engineering Carleton University Computer Integrated Surgical Systems and Technology Engineering Research Center(CISST ERC) Johns Hopkins University

Most target grabbing problems have been dealt with by computer vision system, however, computer vision method is not always enough when it comes to the precision contact grabbing problems during the teleoperation process, and need to be combined with the stiffness display to provide more effective information to the operator on the remote side. Therefore, in this paper a more portable stiffness display device with a small volume and extended function is developed based on our previous work. A new static load calibration of the improved stiffness display device is performed to detect its accuracy, and the relationship between the stiffness and the position is given. An effective target grabbing strategy is presented to help operator on the remote side to judge and control and the target is classified by multi-class SVM(supporter vector machine). The teleoperation system is established to test and verify the feasibility. A special experiment is designed and the results demonstrate that the improved stiffness display device could greatly help operator on the remote side control the telerobot to grab target and the target grabbing strategy is effective.

关键词： Multi-class SVM(supporter vector machine) teleoperation target grabbing stiffness display

Consensus on the health education of home-based negative pressure wound therapy for patients with chronic wounds:a modified Delphi study

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Burns & Trauma 2021年第1期9卷 12-21页

作者： Yao huang Beiqian Mao Jiale hu Bing Xu pengwen Ni Lili Hou Ting Xie Wound Healing Center at Emergency Department Ninth People’s Hospital Affiliated to Shanghai Jiao Tong University School of MedicineShanghai 200011China Shanghai Jiao Tong University School of Nursing Shanghai 200025China Department of Nurse Anesthesia Virginia Commonwealth UniversityVirginia 23298USA Nursing Department Ninth People’s Hospital Affiliated to Shanghai Jiao Tong University School of MedicineShanghai 200011China

Background:The study aimed to develop consensus on the components of health education of home-based negative pressure wound therapy(NPWT)for patients with chronic ***:A Delphi method was used to achieve consensus on the components of health education and 75%agreement and coefficient of variation(CV)<0.25 were used as *** experts were recruited purposefully to finish this ***:Two rounds of consultation were *** was achieved on 36 of the 42 *** final agreed list of statements represented three domains:health education before carrying out home-based NPWT,health education for the treatment day of NPWT at hospital and health education for NPWT at ***:This study was the first attempt to develop consensus on the comprehensive components of health education of home-based NPWT for patients with chronic *** to the established framework and components of health education,wound professionals can safely and effectively implement health education of home-based NPWT for patients with chronic wounds and improve their self-care ability and treatment experience at home.

关键词： Wound healing Negative pressure wound therapy Home care services Delphi study Chronic wound Self-care

一种改进的BDS-2/BDS-3联合精密定轨系统偏差处理模型

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武汉大学学报（信息科学版） 2021年第3期46卷 360-370页

作者：胡超王中元王潜心饶鹏文中国矿业大学自然资源部国土环境与灾害监测重点实验室江苏徐州221116 安徽理工大学空间信息与测绘工程学院安徽淮南232001 中国矿业大学环境与测绘学院江苏徐州221116

针对BDS-2与BDS-3卫星之间的差异性,为实现观测数据深度融合,对BDS-2/BDS-3联合定轨中系统偏差(inter-satellite bias,ISB)模型进行研究。首先,基于奇异值分解提取相邻历元观测信息以增加数据利用率,提高ISB解算精度与可靠性;其次,分析... 详细信息

针对BDS-2与BDS-3卫星之间的差异性,为实现观测数据深度融合,对BDS-2/BDS-3联合定轨中系统偏差(inter-satellite bias,ISB)模型进行研究。首先,基于奇异值分解提取相邻历元观测信息以增加数据利用率,提高ISB解算精度与可靠性;其次,分析了BDS-2/BDS-3联合定轨中ISB特性,发现新信号与BDS-2之间存在明显与接收机相关偏差;随后,利用定轨法方程求解ISB与轨道相关性,结果显示,ISB对北斗轨道精度影响较GPS(global positioning system)显著;最后,通过对ISB时间序列建立短期预报模型,并将预报值作为约束条件引入超快速定轨中。实验结果表明,针对BDS-2/BDS-3超快速轨道,利用提出的ISB的估计与预报模型,可分别改善BDS-2与BDS-3轨道18 h重叠弧段精度(一维)-0.4~1.0 cm与0.8~4.1 cm。因此,所提出的改进的ISB处理模型对优化BDS-2/BDS-3联合定轨策略具有一定参考意义。

关键词： BDS-2/BDS-3联合定轨系统偏差奇异值分解短期预报超快速轨道

基于PROSAC算法与ORB-SLAM2的RGB-D相机室内视觉定位研究

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传感技术学报 2019年第11期32卷 1706-1712页

作者：曹蜜胡凌燕熊彭文彭杰曾雷南昌大学信息工程学院

针对Random Sample Consensus(RANSAC)在匹配误差剔除上具有处理的盲目性而导致算法效率相对较低的问题,提出一种新的用Progressive Sample Consensus(PROSAC)取代ORB-SLAM2中的RANSAC算法的室内视觉定位方法。与传统的ORB-SLAM2方法不同,本文采用PROSAC算法根据特征点的匹配质量进行高低排序,选取质量较高的匹配点对用于求取单应性矩阵H,以此完成对异常点的剔除,在图像匹配过程中大大减少迭代次数。再结合ORB-SLAM2,进行关键帧跟踪,实时建图,回环检测这三个线程,得到准确的定位。图像误差剔除匹配实验结果表明,PROSAC算法可以明显提高运算效率,相对于RANSAC算法效率提高一倍。将该算法结合ORB-SLAM2进行定位实验结果表明,该算法能够获在不降低定位精度的情况下,明显提高算法效率,以保证实际定位过程的实时性和流畅性。

关键词：同步定位与建图视觉定位 RANSAC PROSAC 特征匹配

基于RGB-D图像的三维同步定位与建图研究

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系统仿真学报 2017年第11期29卷 2840-2846页

作者：胡凌燕曹禄熊鹏文辛勇谢泽坤南昌大学信息工程学院南昌330031 南昌大学理学院南昌330031

针对移动机器人三维同步定位与建图过程中机器人位姿误差累积问题,提出了一种位姿全局优化方法提高机器人定位精度和建图质量。该方法在帧到帧配准模型的视觉里程计的基础上,通过基于图像匹配的闭环检测来增加机器人位姿间的约束,在构... 详细信息

针对移动机器人三维同步定位与建图过程中机器人位姿误差累积问题,提出了一种位姿全局优化方法提高机器人定位精度和建图质量。该方法在帧到帧配准模型的视觉里程计的基础上,通过基于图像匹配的闭环检测来增加机器人位姿间的约束,在构建位姿图过程中采用局部回环结合随机大回环策略提高位姿优化效率,最后采用g2o(general graph optimization)算法对机器人位姿进行全局优化。此外,提出了一种关键帧选取方法,以减少系统计算资源及内存空间的消耗。实验结果表明,该方法在运动轨迹3.96 m的情况下均方根误差仅为8.7 mm,并能准确构建出室内场景的三维地图。

关键词：同步定位与建图视觉里程计闭环检测关键帧图优化

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基于点云模型的虚拟手术系统建模及碰撞检测

数据采集与处理 2016年第5期31卷 903-910页

作者：胡凌燕何声星熊鹏文刘小平任忠杰南昌大学信息工程学院南昌330031 卡尔顿大学工程与设计学院系统与计算机工程系

建模与碰撞检测算法是虚拟手术具有良好实时性的前提。通过,CT得到病人身体患部的点云数据再基于八叉树剖分算法,采用层次包围球结构,对手术部位的软组织及器官进行建模。为了提高碰撞检测的实时性,将手术器械物理模型简化为一个小球或... 详细信息

建模与碰撞检测算法是虚拟手术具有良好实时性的前提。通过,CT得到病人身体患部的点云数据再基于八叉树剖分算法,采用层次包围球结构,对手术部位的软组织及器官进行建模。为了提高碰撞检测的实时性,将手术器械物理模型简化为一个小球或一条直线与软组织交互,而几何模型保持不变,这样在不影响虚拟手术的视觉效果同时又提高了碰撞检测的速度。实验结果表明,算法能准确检测出虚拟手术器械与虚拟模型接触的点,而且碰撞检测实时性显著提高,简化后的平均碰撞检测时间仅为虚拟手术的快速碰撞检测算法中未简化的方法平均时间的10%。

关键词：虚拟手术碰撞检测点云包围球

一种新颖的基于二分法和模糊控制的移动机器人避障系统

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传感技术学报 2018年第9期31卷 1436-1443页

作者：金兆远胡凌燕熊鹏文彭杰吴承哲南昌大学信息工程学院江西南昌330031

针对超声波传感器波束角窄导致移动机器人存在避障盲区的现状,研究了一种新颖的超声波避障系统。该系统采用6个超声波传感器构成特别设计的超声波阵列,实现无盲区检测中大型移动机器人前方及左右两侧障碍物的位置,充分保障运行安全性;... 详细信息

针对超声波传感器波束角窄导致移动机器人存在避障盲区的现状,研究了一种新颖的超声波避障系统。该系统采用6个超声波传感器构成特别设计的超声波阵列,实现无盲区检测中大型移动机器人前方及左右两侧障碍物的位置,充分保障运行安全性;同时在避障算法上,采用二分法和模糊控制相结合的控制算法,简化了模糊控制规则使系统具有很好的智能性和实时性,实现了移动机器人选择最佳避障路径并对新增的动态障碍物进行避障。将此避障控制系统应用于移动机器人上,实验结果表明:在未知环境下,实现对移动机器人周边的无盲区检测,并且能够实时根据周围障碍物的动态情况选择最佳避障路径,避免了其他避障控制算法中易出现的误避障和二次避障的情况。

关键词：移动机器人避障超声波阵列模糊控制