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Pan-location mapping and localization for the in-situ science exploration of Zhurong Mars rover

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Science China(Information Sciences) 2022年第7期65卷 170-184页

作者： Xingguo ZENG Jianjun liU Xin REN Wei YAN Qiang FU Xingye GAO Wangli CHEN Wei ZUO chunlai li Key Laboratory of Lunar and Deep Space Exploration National Astronomical ObservatoriesChinese Academy of Sciences School of Astronomy and Space Science University of Chinese Academy of Sciences

On May 15, 2021, Tianwen-1 successfully landed in the Utopia Planitia of Mars, and its rover Zhurong began to carry out an in-situ science exploration of the Mars surface. To determine the location,driving direction, and exploration targets of the rover, it is necessary to provide decision support for the in-situ science exploration of the rover and ensure the achievement of the scientific objectives, which pose significant challenges to the ground science team. Based on the classical research on Lunar and planetary localization, navigation and exploration target selection, and the recent study of pan-location cartographic theory, a pan-location mapping method for an in-situ rover exploration is proposed. In addition, a panlocation reference system, mapping data model, and mapping method are designed to realize the localization and visualization of the landing platform, rover, and exploration targets. The mapping method has been successfully applied to the localization, navigation, and science exploration of the target selection involved in the in-situ exploration of the Zhurong rover. The results of this study not only provide vital support to the implementation of the Tianwen-1 mission; they can also be used as instructions for other future in-situ Lunar and planetary exploration missions.

关键词： Pan-location mapping pan-location mapping planetary exploration Planetary exploration Geo-visualization geo-visualization Tianwen-1 mission Zhurong rover

The 2018 M_S 5.9 Mojiang Earthquake:Source model and intensity based on near-field seismic recordings

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Earth and Planetary Physics 2019年第3期3卷 268-281页

作者： Xu Zhang Zhen Fu liSheng Xu chunlai li Hong Fu Institute of Geophysics China Earthquake Administration Earthquake Administration of Yunnan Province

On September 8, 2018, an M_S 5.9 earthquake struck Mojiang, a county in Yunnan Province, China. We collect near-field seismic recordings(epicentral distances less than 200 km) to relocate the mainshock and the aftershocks within the first 60 hours to determine the focal mechanism solutions of the mainshock and some of the aftershocks and to invert for the finite-fault model of the *** focal mechanism solution of the mainshock and the relocation results of the aftershocks constrain the mainshock on a nearly vertical fault plane striking northeast and dipping to the southeast. The inversion of the finite-fault model reveals only a single slip asperity on the fault plane. The major slip is distributed above the initiation point, ～14 km wide along the down-dip direction and ～14 km long along the strike direction, with a maximal slip of ～22 cm at a depth of ～6 km. The focal mechanism solutions of the aftershocks show that most of the aftershocks are of the strike-slip type, a number of them are of the normal-slip type, and only a few of them are of the thrust-slip *** average, strike-slip is dominant on the fault plane of the mainshock, as the focal mechanism solution of the mainshock suggests, but when examined in detail, slight thrust-slip appears on the southwest of the fault plane while an obvious part of normal-slip appears on the northeast, which is consistent with what the focal mechanism solutions of the aftershocks display. The multiple types of aftershock focal mechanism solutions and the slip details of the mainshock both suggest a complex tectonic setting, stress setting, or both. The intensity contours predicted exhibit a longer axis trending from northeast to southwest and a maximal intensity of Ⅷ around the epicenter and in the northwest.

关键词： 2018 MS 5.9 Mojiang Earthquake near-field seismic recording finite-fault model intensity prediction focal mechanism solution

思政教育在测控工程专业课程教学中的融合路径研究

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科学咨询(教育科研) 2024年第8期 136-139页

作者：金凯董海迪李春来李海燕袁胜智海军工程大学兵器工程学院

专业课程作为人才培养的核心要素，对专业课程的思政教育设计是解决人才培养质量的重点发展方向。测控工程专业课程中融入思政教育是培养“好用、顶用、管用”岗位任职人才的重要途径。本文从测控工程专业课程思政的内涵解读入手，按照... 详细信息

专业课程作为人才培养的核心要素，对专业课程的思政教育设计是解决人才培养质量的重点发展方向。测控工程专业课程中融入思政教育是培养“好用、顶用、管用”岗位任职人才的重要途径。本文从测控工程专业课程思政的内涵解读入手，按照整体性设计、一体化推进、差异化实践的原则构建了课程思政体系，设计了“一遵循，两培育，三协同，四融入”的课程思政融合路径，完善了课程思政的教学设计，改进了教育教学的方式方法，构建全员全过程全方位育人的“大思政”格局，赋予测控工程专业课程思政价值，提高了协同育人成效，达到了春风化雨、润物无声的育人效果。

关键词：思政教育协同育人测控工程融合路径

Shadow–highlight feature matching automatic small crater recognition using high-resolution digital orthophoto map from Chang’E Missions

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Acta Geochimica 2019年第4期38卷 541-554页

作者： Wei Zuo chunlai li lingjie Yu Zhoubin Zhang Rongwu Wang Xingguo Zeng Yuxuan liu Yaying Xiong Key Laboratory of Lunar and Deep Space Exploration National Astronomical ObservatoriesChinese Academy of SciencesBeijing 100101China School of Astronomy and Space Sciences University of Chinese Academy of SciencesBeijing 100049China School of Textile Science and Engineering Xi'an Polytechnic UniversityXi'an 710048China College of Textiles Donghua UniversityShanghai 200051China

This paper introduces a new method of small lunar craters’ automatic identification, using digital orthophoto map(DOM) data. The core of the approach is the fact that the lunar exploration DOM data reveal contrasting highlight and shadow characteristics of small craters under sunlight irradiation. This research effort combines image processing and mathematical modeling. Overall it proposes a new planetary data processing approach, to segment and extract the highlight and shadow regions of small craters,using the image gray frequency(IGF) statistical *** can also be applied to identify the coupling relationships between small craters’ shape and their relative features. This paper presents the highlight and shadow pair matching(HSPM) model which manages to perform highprecision automatic recognition of small lunar *** was performed using the DOM data of Chang’E-2(CE-2). The results have shown that the proposed method has a high level of successful detection rate. The proposed methodology that uses DOM data can complement the drawbacks of the digital elevation model(DEM) that has a relatively high false detection rate. A hybrid fusion model(FUM) that combines both DOM and DEM data, was carried out to simultaneously identify small, medium, and large-sized craters. It has been proven that the FUM generally shows stronger recognition ability compared to previous approaches and it can be adapted for high precision identification of craters on the whole lunar *** results meet the requirements for a reliable and accurate exploration of the Moon and the planets.

关键词： Moon Crater recognition Image processing Space exploration

盐酸氢吗啡酮对胃癌细胞的增殖、迁移和侵袭能力的影响

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中华实验外科杂志 2024年第7期41卷 1487-1489页

作者：李春来陈翠花谢玉波覃怡广西医科大学第一附属医院麻醉科南宁530021 广西消化道肿瘤加速康复外科基础研究重点实验室南宁530021

目的观察盐酸氢吗啡酮对人胃癌MGC-803细胞的增殖、迁移、侵袭和相关蛋白表达的影响。方法人胃癌MGC-803细胞随机分为两组(n=6):对照组(C组)和400 μmol/L氢吗啡酮组(H组)。应用细胞计数试剂盒(CCK-8)法检测细胞活力, 细胞克隆形成实验... 详细信息

目的观察盐酸氢吗啡酮对人胃癌MGC-803细胞的增殖、迁移、侵袭和相关蛋白表达的影响。方法人胃癌MGC-803细胞随机分为两组(n=6):对照组(C组)和400 μmol/L氢吗啡酮组(H组)。应用细胞计数试剂盒(CCK-8)法检测细胞活力, 细胞克隆形成实验检测细胞的增殖能力, Transwell实验检测细胞的侵袭和迁移能力, 蛋白质印迹法(Western blot)检测磷酸化磷脂酰肌醇3激酶(p-PI3K)、磷酸化蛋白激酶B(p-Akt)和磷酸化雷帕霉素靶蛋白(p-mTOR)蛋白的表达, 组间比较采用方差分析和独立样本t检验。结果 H组的细胞活力明显低于C组[(66.34±7.56)%比(93.76±4.97)%, t=7.421, P<0.05], 差异有统计学意义。H组胃癌细胞克隆形成能力低于C组[(62.17±4.79)%比(90.83±7.73)%, t=7.720, P<0.05], 差异有统计学意义。H组细胞迁移数低于C组[(101.67±5.43)个比(142.83±6.29)个, t=11.816, P<0.05], H组的细胞侵袭数低于C组[(75.83±4.02)个比(94.50±5.96)个, t=6.361, P<0.05], 差异有统计学意义。H组p-PI3K蛋白的表达低于C组(0.24±0.03比0.53±0.04, t=13.915, P<0.05), 差异有统计学意义。H组p-Akt蛋白的表达低于C组(0.54±0.05比0.64±0.06, t=3.021, P<0.05), 差异有统计学意义。H组p-mTOR蛋白的表达低于C组(0.17±0.02比0.24±0.03, t=5.081, P<0.05), 差异有统计学意义。结论氢吗啡酮抑制MGC-803细胞的增殖、侵袭和迁移能力, 其作用可能与抑制PI3K/Akt/mTOR信号通路有关。

关键词：氢吗啡酮胃癌增殖侵袭迁移

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含风电的发输电系统经济风险评估

青海电力 2024年第2期43卷 14-22,37页

作者：刘庭响安娜马俊雄周万鹏李春来国网青海省电力公司清洁能源发展研究院青海西宁810000 国网青海省电力公司经济技术研究院青海西宁810000 国网青海省电力公司电力科学研究院青海西宁810000

为了评估大规模风电并网后的发输电系统经济风险,提出了ECM算法和切片采样算法结合拉丁超立方采样算法的组合采样算法,以及基于组合采样算法的马尔科夫链蒙特卡洛(MCMC)模拟法。首先,采用加权高斯混合分布建立风电场出力概率模型,并采用... 详细信息

为了评估大规模风电并网后的发输电系统经济风险,提出了ECM算法和切片采样算法结合拉丁超立方采样算法的组合采样算法,以及基于组合采样算法的马尔科夫链蒙特卡洛(MCMC)模拟法。首先,采用加权高斯混合分布建立风电场出力概率模型,并采用ECM算法进行参数估计;其次,通过切片采样算法对风电场模型进行采样得到初始样本空间,再采用拉丁超立方采样算法对初始样本进行处理获得最终样本空间;再次,建立了风电并网的发输电系统经济风险评估模型并给出经济风险指标;最后,以IEEE-RTS79系统为标准算例,仿真验证了本文所提算法的有效性和准确性,并以MCMC方法对风电并网的发输电系统进行经济风险评估。仿真结果表明:ECM算法所确定的加权高斯混合分布能够准确拟合风电场出力波动的概率分布特性,组合采样算法在满足精度要求的条件下降低了样本规模,提高了算法的计算效率。风险评估结果表明适当的风电并网容量和合理的风电并网位置会降低发输电系统的经济风险。

关键词：风电并网发输电系统马尔科夫链蒙特卡洛模拟法组合采样算法经济风险评估

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全身麻醉对婴幼儿大脑发育影响的临床研究

右江医学 2024年第4期52卷 313-318页

作者：杨影陈丽斐覃银莹李春来谢玉波广西医科大学第一附属医院麻醉科广西南宁530021 广西消化道肿瘤加速康复外科基础研究重点实验室广西南宁530021

目的探讨全身麻醉对婴幼儿术后大脑发育的影响。方法对2012—2015年期间年龄为0~3岁时在广西医科大学第一附属医院接受全身麻醉下的手术治疗儿童(研究组)共429例在其3~6岁时进行回顾性分析。按照研究组儿童生活的城市地区、年龄、性别... 详细信息

目的探讨全身麻醉对婴幼儿术后大脑发育的影响。方法对2012—2015年期间年龄为0~3岁时在广西医科大学第一附属医院接受全身麻醉下的手术治疗儿童(研究组)共429例在其3~6岁时进行回顾性分析。按照研究组儿童生活的城市地区、年龄、性别、民族等特征采取1∶1配对设计,选取0~3岁期间未接受过全身麻醉的3~6岁儿童共429例作为对照。查阅和记录研究组儿童的麻醉记录单及基本信息,将研究组儿童按麻醉时长分为三组:2 h组(A3组),按手术麻醉次数分为两组:单次组(B1组)、2次组(B2组),按苏醒时间分为三组:60 min组(C3组)。采用韦氏幼儿智力量表第四版(WPPSI-IV)综合评估上述儿童的总体认知能力及智力活动水平,Achenbach儿童行为量表(CBCL)总得分评估儿童行为、情绪和社会能力,盖塞尔发展量表(Gesell)评价儿童的中枢神经系统功能及发育水平。结果适用2岁6个月~4岁前韦氏智力量表的儿童中:与对照组比较,研究组儿童的工作记忆指数得分降低;适用4岁~6岁11个月韦氏智力量表的儿童中:与对照组比较,研究组儿童的言语理解指数、流体推理指数、加工速度指数、工作记忆指数得分和盖塞尔量表的发育商数降低(P0.05)。结论婴幼儿在大脑发育期接受全身麻醉可能对其神经系统发育产生影响,接受2次或时长大于2 h全身麻醉的婴幼儿在智力发育的过程中的短时记忆和存储、加工以及输出信息的能力更易受影响。

关键词：全身麻醉婴幼儿大脑发育临床研究

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SPACE CHEMISTRY RESEARCHES IN CHINA DURING 2000-2001

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空间科学学报 2002年第Z1期22卷 120-128页

作者： ZOU Yongliao liN Yangting li chunlai liU Jianzhong OUYANG Ziyuan XU lin National Astronomical Observatory The Chinese Academy of Sciences Beijing 100012P. R. China Institute of Geochemistry The Chinese Academy of Sciences P.R. China Guangzhou Institute of Geochemistry The Chinese Academy of Sciences P.R. China National Astronomical Observatory The Chinese Academy of Sciences Beijing 100012P. R. China National Astronomical Observatory The Chinese Academy of Sciences Beijing 100012P. R. China Institute of Geochemistry The Chinese Academy of Sciences P.R. China National Astronomical Observatory The Chinese Academy of Sciences Beijing 100012P. R. China Institute of Geochemistry The Chinese Academy of Sciences P.R. China

Over the past two years, significant progress in space chemistry has been made in China. The research fields include meteorites, pre-solar materials, science researches of the moon, effects of the space debris on space environment, and heterogeneity of the Earth. Chinese Lunar Exploration Project Some studies are also dedicated to one important space mission "Chinese Lunar Exploration Project". In this paper, the main achievements are outlined, and some concepts and hypotheses are briefly revised.

关键词： Space chemistry, Meteorite, Solar system, Earth, Lunar explo ration

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基于优先级融合算法的高精度黑体温控研究

红外技术 2024年第5期46卷 576-583页

作者：黄浦江杨文航朱首正赵帮健金海军金柯李春来刘世界中国科学院大学杭州高等研究院浙江杭州310000 中国科学院大学北京100049 中国科学院上海技术物理研究所上海200083

为优化红外成像光谱仪探测性能,提出了一种具有用户自定义指标和温控精度达到1.0 mK的优先级融合控制算法(Priority fusion algorithm,PFA),该算法将基础PID、模糊PID和自抗扰控制算法与BP神经网络算法相融合,能够实现高性能黑体温控。... 详细信息

为优化红外成像光谱仪探测性能,提出了一种具有用户自定义指标和温控精度达到1.0 mK的优先级融合控制算法(Priority fusion algorithm,PFA),该算法将基础PID、模糊PID和自抗扰控制算法与BP神经网络算法相融合,能够实现高性能黑体温控。通过Simulink仿真实验,仿真结果表明,与传统算法相比,PFA算法的超调量从3.606%下降到0.101%,响应时间从64 min下降到14.4 min,温度控制精度达到1.0 mK。同时搭建了黑体辐射定标平台,物理实验结果与理论模拟结果基本一致。该模型为高精度温控黑体在空间遥感领域的实际应用奠定理论基础,在温控领域具有重大意义。

关键词：温控系统 BP神经网络 PFA控制算法温控精度辐射定标