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相机与激光雷达融合的道路目标检测研究

广西科技大学学报 2024年第1期35卷 84-93页

作者：赵浙栋张成涛李习刊杨航覃立仁广西科技大学机械与汽车工程学院广西柳州545616

目标检测是自动驾驶感知系统的基础。由于单一传感器的感知存在时空盲区问题,本文提出一种基于相机与激光雷达的后融合目标检测算法。该算法采用改进后的YOLOv5s视觉目标检测算法来检测目标类别,其平均精度均值提高了2.75%。激光雷达感... 详细信息

目标检测是自动驾驶感知系统的基础。由于单一传感器的感知存在时空盲区问题,本文提出一种基于相机与激光雷达的后融合目标检测算法。该算法采用改进后的YOLOv5s视觉目标检测算法来检测目标类别,其平均精度均值提高了2.75%。激光雷达感知采用分段聚类半径的欧几里得聚类算法对预处理后的点云信息进行聚类,并检测出检测区域内物体的目标距离。通过标定的参数,将点云投影到图像上,以融合感知结果来确定检测对象的类别和距离。本文在相关工况环境下对算法进行了验证和测试,结果表明:本文提出的目标检测算法的检出率为88.9%,比单一相机感知的检出率提高了7.8%。

关键词： YOLOv5s 激光雷达多传感器融合目标检测

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净尘风筒除尘技术装置

矿山机械 2024年第4期52卷 49-54页

作者：吕明杰刘立仁袁强徐洋刘雅雯国家能源集团国源电力有限公司北京100033 国家卫生健康委职业安全卫生研究中心北京102308

针对综采工作面采煤过程中污染严重的问题,通过试验分析、数值模拟和现场测试相结合的方法,对液压支架间喷雾装置进行了改进,研制了一种净尘风筒除尘技术装置。数值模拟及现场测试表明,该装置在液压压力为8 MPa、空气压力为1.MPa时,喷... 详细信息

针对综采工作面采煤过程中污染严重的问题,通过试验分析、数值模拟和现场测试相结合的方法,对液压支架间喷雾装置进行了改进,研制了一种净尘风筒除尘技术装置。数值模拟及现场测试表明,该装置在液压压力为8 MPa、空气压力为1.MPa时,喷雾性能达到最佳,采煤机周围粉尘抑制率可达87.96%,可有效改善综采工作面作业环境。

关键词：综采工作面净尘风筒数值模拟

Apoptotic and nonapoptotic function of caspase 7 in spermatogenesis

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Asian Journal of Andrology 2017年第1期19卷 47-51页

作者： Bin Lei Xuming Zhou Daojun Lv Bo Wan Huayan Wu liren Zhong Fangpeng Shu Xiangming Mao Department of Urology Nanfang Hospital Southern Medical University Guangzhou Guangdong Province China Department of Urology Peking University Shenzhen Hospital Shenzhen PKU-HKUST Medical Center Shenzhen Guangdong Province China.

Recent studies have reported that caspase 7 has an apoptotic and nonapoptotic function. However, the relationship between caspase 7 and spermatogenesis remains unknown. This study aimed to investigate the possible function of caspase 7 during normal and abnormal spermatogenesis. The cleaved form of caspase 7 was detected in testis tissues at different postpartum times （5-1. weeks） by qRT-PCR, Western blot and immunohistochemistry （IHC）. Then, the mice models of spermatogenic dysfunction were obtained by busulfan （30 mg kg-1. to further evaluate the potential function and mechanism of caspase 7. qRT-PCR and Western blot results showed that caspase 7 expression was gradually elevated from 5 to 1. weeks, which was not connected with apoptosis. IHC results revealed that caspase 7 was mainly located in spermatogenic cells and Leydig cells. In addition, spermatogenic dysfunction induced by busulfan gradually enhanced the apoptosis and elevated the expression of caspase 3, caspase 6, and caspase 9, but decreased the expression of caspase 7 in spermatogenic cells. However, when spermatogenic cells were mostly disappeared at the fourth week after busulfan treatment, caspase 7 expression in Leydig cells was significantly increased and positively correlated with the expression of caspase 3, caspase 6, and caspase 9. Therefore, these results indicate that caspase 7 has a nonapoptic function that participates in normal spermatogenesis, but also displays apoptotic function in spermatogenic dysfunction.

关键词： apoptosis caspase 7 caspases spermatogenesis spermatogenic dysfunction

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基于站城融合条件下的站台实际限界标准优化

铁道技术标准（中英文） 2024年第5期6卷 8-12页

作者：王立仁曹永霄陈晓明巨玉祥高原铁路运输智慧管控铁路行业重点实验室甘肃兰州730070 中铁第一勘察设计院集团有限公司线运院陕西西安710043 中国铁路兰州局集团公司武威南车务段甘肃武威733009 兰州交通大学交通运输学院甘肃兰州730070

现行的铁路站台建筑限界设计及其施工验收标准富裕量均较大,以适应各种复杂条件下高速铁路站台墙建设要求。但随着“站城融合”概念的提出,车站建成环境发生变化。相对外界而言,该类车站的建设封闭且稳定,停站车体受到外界“横风”影响... 详细信息

现行的铁路站台建筑限界设计及其施工验收标准富裕量均较大,以适应各种复杂条件下高速铁路站台墙建设要求。但随着“站城融合”概念的提出,车站建成环境发生变化。相对外界而言,该类车站的建设封闭且稳定,停站车体受到外界“横风”影响,产生的偏移量较小,因此,为提高旅客乘车安全性,站台建筑限界设计及施工验收标准也应相应进行调整。本文通过对影响铁路站台实际限界重要因素“横风”及施工质量验收标准进行分析,提出在站城融合条件下的旅客站台合理最小建筑限界值,为站城融合条件下车站站台的设计和施工提供参考,同时强化旅客乘车安全保障,提高客运服务质量,提升旅客乘车体验。

关键词：站城融合铁路站台实际建筑限界标准优化

Web services interface to EPICS channel access

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Nuclear Science and Techniques 2008年第2期19卷 74-78页

作者： DUAN Lei SHEN liren Shanghai Institute of Applied Physics Chinese Academy of Sciences Shanghai 201800 China Graduate University of the Chinese Academy of Sciences Beijing 100049 China

Web services is used in Experimental Physics and Industrial Control System (EPICS).Combined with EPICS Channel Access protocol,Web services' high usability,platform independence and language independence can be used to design a fully transparent and uniform software interface layer,which helps us complete channel data acquisition,modification and monitoring *** software interface layer,a cross-platform of cross-language, has good interopcrability and reusability.

关键词： EPICS 信道接口 Web 服务器中间件

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军事计量数据管理与应用探讨

计量与测试技术 2024年第1期51卷 116-119页

作者：郭力仁王庆民古兆兵吴立强军事科学院系统工程研究院

军事计量数据中蕴含着大量有价值的信息,对于辅助管理决策,预测装备状态等具有重要作用。加强数据管理应用,适应数字化变革,已是做好军事计量工作必须关注的问题。本文对其管理的外在驱动因素进行了全面梳理,并从管理、建设、装备、机构... 详细信息

军事计量数据中蕴含着大量有价值的信息,对于辅助管理决策,预测装备状态等具有重要作用。加强数据管理应用,适应数字化变革,已是做好军事计量工作必须关注的问题。本文对其管理的外在驱动因素进行了全面梳理,并从管理、建设、装备、机构4个维度,对开展数据管理应用的内在需求进行系统分析,结合当前现状,提出管理的推进与应用建议。

关键词：军事计量数据管理数据应用

Panoramic View Tower:The Birthplace of Chinese Film

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China & The World Cultural Exchange 2005年第7期71卷 39-41页

作者： Xu liren

At the 58th Cannes International Film Festival, Chinese film “Shanghai Dreams”, presented by sixth generation director Wang Xiaoshuai, won the Jury Prize award. In his speech at the award ceremony, Wang said that the film was his best gift for the 1.0th anniversary of Chinese film. This year, Daguanlou (Panoramic View Tower), known as the birthplace of Chinese film, is under renovation to welcome this great occasion.

关键词：中国电影史电影艺术 “大观楼”

Crimped nanofiber scaffold mimicking tendon-to-bone interface for fatty-infiltrated massive rotator cuff repair

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Bioactive Materials 2022年第10期7卷 149-161页

作者： liren Wang Tonghe Zhu Yuhao Kang Jianguang Zhang Juan Du Haihan Gao Sihao Chen Jia Jiang Jinzhong Zhao Department of Sports Medicine Department of OrthopedicsShanghai Institute of Microsurgery on ExtremitiesShanghai Jiao Tong University Affiliated Sixth People’s HospitalNo.600 Yishan RoadShanghai200233China Regenerative Sports Medicine and Translational Youth Science and Technology Innovation Workroom Shanghai Jiao Tong University School of MedicineNo.227 South Chongqing RoadShanghai200025China Department of Medgen Group Research Laboratory 18 Qinglan 3 RdShenzhen518118China Biofunctional Materials Research Group College of Chemistry and Chemical EngineeringMultidisciplinary Center for Advanced MaterialsInstitute of Advanced StudiesShanghai University of Engineering ScienceNo.333 Longteng RdShanghai201620China Shanghai Jiao Tong University School of Medicine No.227 South Chongqing RoadShanghai200025China Regenerative Sports Medicine Lab of the Institute of Microsurgery on Extremities Shanghai Jiao Tong University Affiliated Sixth People’HospitalNo.600 Yishan RoadShanghai200233China

Electrospun fibers,with proven ability to promote tissue regeneration,are widely being explored for rotator cuff ***,without post treatment,the microstructure of the electrospun scaffold is vastly different from that of natural extracellular matrix(ECM).Moreover,during mechanical loading,the nanofibers slip that hampers the proliferation and differentiation of migrating stem ***,electrospun nanofiber scaffolds,with crimped nanofibers and welded joints to biomimic the intricate natural microstructure of tendon-to-bone insertion,were prepared using poly(ester-urethane)urea and gelatin via electrospinning and double crosslinking by a multi-bonding network densification *** crimped nanofiber scaffold(CNS)features bionic tensile stress and induces chondrogenic differentiation,laying credible basis for in vivo *** repairing a rabbit massive rotator cuff tear using a CNS for 3 months,the continuous translational tendon-to-bone interface was fully regenerated,and fatty infiltration was simultaneously *** of micro-CT,μCT was employed to visualize the integrity and intricateness of the three-dimensional microstructure of the CNS-induced-healed tendon-to-bone interface at an ultra-high resolution of less than 1.*** study sheds light on the correlation between nanofiber post treatment and massive rotator cuff repair and provides a general strategy for crimped nanofiber preparation and tendon-to-bone interface imaging characterization.

关键词： Massive rotator cuff tear Fatty infiltration Nanofiber scaffold Crimped structure Tendon-to-bone interface

大棚大果型西瓜半吊蔓高密度种植模式及关键栽培技术

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蔬菜 2024年第10期 78-80页

作者：王莹莹张明权黄连超张华陈立人江陵县职业教育中心湖北江陵434100 湖北省现代农业技师学院湖北江陵434100 荆州市农业科学院湖北荆州434120 江苏小瓢虫生物科技有限公司江苏苏州215000 苏州农业职业技术学院江苏苏州215000

大棚种植大果型西瓜一般采用爬地种植,种植株数少、坐瓜数少、产量低,效费比(纯收入/总投入)不高,在1.2~1.6。经多年试验研究,将爬地种植与吊蔓种植2种模式的优势相结合,形成了大棚大果型西瓜半吊蔓高密度种植模式,该模式采用半吊蔓高... 详细信息

大棚种植大果型西瓜一般采用爬地种植,种植株数少、坐瓜数少、产量低,效费比(纯收入/总投入)不高,在1.2~1.6。经多年试验研究,将爬地种植与吊蔓种植2种模式的优势相结合,形成了大棚大果型西瓜半吊蔓高密度种植模式,该模式采用半吊蔓高密度种植,营养枝吊蔓生长,结果枝爬地坐瓜,大幅度提高了种植密度和产量,单位面积产量增加70%,纯收入增加1.左右,效费比1.7~2.2,在不大幅增加劳动强度和种植成本的基础上,实现了高密度、高产量、高效益。

关键词：大棚大果型西瓜半吊蔓高密度种植模式产量效费比