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Research in Astronomy and Astrophysics 2024年第6期24卷 1-6页

作者： Wei-Nan Wang jin-song ping Ming-Yuan Wang Wen-Zhao Zhang Han-Lin Ye Xing-Wei Han song-Feng Kou Changchun Observatory National Astronomical ObservatoriesChinese Academy of SciencesChangchun 130117China National Astronomical Observatories Chinese Academy of SciencesBeijing 100101China University of Chinese Academy of Sciences Beijing 101408China Astronomy Department Beijing Normal UniversityBeijing 100875China International Center for Climate and Environment Sciences Institute of Atmospheric PhysicsChinese Academy of SciencesBeijing 100029China Nanjing Institute of Astronomical Optics and Technology Chinese Academy of SciencesNanjing 210042China

Lunar optical polarization is a fascinating phenomenon that occurs when sunlight reflects off the surface of the Moon and becomes *** study employs a novel split-focus plane polarimetric camera to conduct the initial white light polarimetric observations on the near side of the *** obtained the linear degree of polarization(DOP)parameters of white light by observation from the eastern and western hemispheres of the *** findings indicate that the white light polarization is lower in the lunar highland than in the lunar maria *** the analysis of lunar soil samples,we noticed and determined that the DOP parameters of white light demonstrate high consistency with iron oxide on the *** study may serve as a new diagnostic tool for the Moon.

关键词： techniques:photometric polarization methods:observational Moon

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西方智慧社区研究进展

人文地理 2024年第4期39卷 19-26,159页

作者：郭凯菲蒋华雄戴特奇宋金平北京师范大学地理科学学部北京100875

智慧社区是智慧城市的基本单元及在较小尺度空间的实践。本研究综述近十年来西方智慧社区的研究进展,以启发国内在基本内涵、发展特征、发展目标等方面的相关研究。研究表明,智慧社区内涵主要以技术维度、人力资本、社会技术互动等三个... 详细信息

智慧社区是智慧城市的基本单元及在较小尺度空间的实践。本研究综述近十年来西方智慧社区的研究进展,以启发国内在基本内涵、发展特征、发展目标等方面的相关研究。研究表明,智慧社区内涵主要以技术维度、人力资本、社会技术互动等三个方面为视角,其研究领域涉及社区服务、社区设施、社区治理等方面的智慧化进程。智慧社区发展也存在隐私泄露、“数字鸿沟”、数据处理技术难度高、居民发言权缺少、管理监测不足等方面的问题。未来,智慧社区需要更加关注社会技术互动过程,强调多元主体参与下的公共服务改进、居民生活质量提升和社区可持续发展。

关键词：智慧城市社区治理社会技术视角信息通讯技术数据隐私与安全

青藏高原地区绿色全要素生产率时空分异与驱动机理

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长江流域资源与环境 2024年第6期33卷 1182-1196页

作者：刘庆芳谢佳亮张先甜吴卫宋金平杨显明北京师范大学地理科学学部北京100875 华南理工大学旅游管理系广东广州510006 湖南师范大学旅游学院湖南长沙410081 湖南财政经济学院湖南省经济地理研究所湖南长沙410205 青海师范大学地理科学学院青海西宁810016

提高绿色全要素生产率是促进青藏高原地区经济社会高质量发展的重要举措。基于2000~2019年青藏高原地市州面板数据,综合运用全域Malmquist-Luenberger指数、非参数Kernel核密度估计、空间马尔科夫链和面板分位数回归等方法,分析青藏高... 详细信息

提高绿色全要素生产率是促进青藏高原地区经济社会高质量发展的重要举措。基于2000~2019年青藏高原地市州面板数据,综合运用全域Malmquist-Luenberger指数、非参数Kernel核密度估计、空间马尔科夫链和面板分位数回归等方法,分析青藏高原地区绿色全要素生产率的时空演化特征及其驱动机理。结果表明:(1)研究期内,青藏高原地区绿色全要素生产率的演化趋势相对稳定,在省区和地市州层面上均波动起伏,上下徘徊,呈现“多峰”波浪型集聚形态;(2)青藏高原地区地市州绿色全要素生产率空间分异的连续性和稳定性良好,在空间上存在跨越式转移的可能,并在连续转移过程中存在“马太效应”;(3)经济发展水平、产业结构和人口规模均能在不同水平上促进青藏高原地区绿色全要素生产率的提升,而城镇化进程的加速不利于绿色全要素生产率的增长。

关键词：高质量发展绿色全要素生产率全域Malmquist-Luenberger指数空间马尔科夫链青藏高原地区

Electron content near the lunar surface using dual-frequency VLBI tracking data in a single lunar orbiter mission

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Research in Astronomy and Astrophysics 2015年第5期15卷 753-763页

作者： Zhen Wang Na Wang jin-song ping Key Laboratory of Radio Astronomy Xinjiang Astronomical Observatory Chinese Academy of Sciences Key Laboratory of Lunar and Deep Space Exploration National Astronomical ObservatoriesChinese Academy of Sciences

In VLBI observations of Vstar, a subsatellite of the Japanese lunar mission SELENE, there were opportunities for lunar grazing occultation when Vstar was very close to the limb of the Moon. This kind of chance made it possible to probe the thin plasma layer above the Moon＇s surface as a meaningful by-product of VLBI, by using the radio occultation method with coherent radio waves from the S/X bands. The dual-frequency measurements were carried out at Earth-based VLBI stations. In the line-of-sight direction between the satellite and the ground-based tracking station where VLBI measurements were made, the effects of the terrestrial ionosphere, interplanetary plasma and the thin lunar ionosphere mixed together in the combined observables of dual-frequency Doppler shift and phase shift. To separate the variation of the ionospheric total electron content （TEC） near the surface of the Moon from the mixed signal, the influences of the terrestrial ionosphere and interplanetary plasma have been removed by using an extrapolation method based on a short-term trend. The lunar TEC is estimated from the dual-frequency observation for Vstar from UT 22：18 to UT 22：20 on 2008 June 28 at several tracking stations. The TEC results obtained from VLBI sites are identical, however, they are not as remarkable as the result obtained at the Usuda deep space tracking station.

关键词： planets and satellites atmospheres -- occultations --detection

京津冀协同发展的城市碳减排效应评估及机制分析

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软科学 2024年第9期38卷 75-83页

作者：蒋正云刘庆芳程依婷宋金平北京师范大学地理科学学部北京100875

以京津冀协同发展战略的确立作为一项准自然实验,采用双重差分方法,系统探究京津冀协同发展对城市碳排放的溢出效应,并基于中介效应模型,进一步明晰协同发展助力城市碳减排的作用机制。结果发现:(1)协同发展战略的实施能够显著促进京津... 详细信息

以京津冀协同发展战略的确立作为一项准自然实验,采用双重差分方法,系统探究京津冀协同发展对城市碳排放的溢出效应,并基于中介效应模型,进一步明晰协同发展助力城市碳减排的作用机制。结果发现:(1)协同发展战略的实施能够显著促进京津冀城市的碳减排,在考虑平行趋势和经过PSM-DID、安慰剂检验等稳健性检验后结论依然成立;(2)动态趋势上,协同发展的政策红利具有显著的时间滞后性,其碳减排效应大约在战略实施后的第4年开始凸显,且强度随时间推移持续强化;(3)异质性分析结果表明,协同发展战略对核心功能区城市和高碳排放城市碳减排的促进作用大于节点城市,对低碳排放城市的减排效果尚不显著;(4)区域协同发展能够通过推动产业结构高级化和科技创新助力城市碳减排,公共服务的一体化过程则可能由于基础设施的更新建设短期加剧城市碳排放。

关键词：碳中和协同发展 DID模型准自然实验京津冀

Determination of the free lunar libration modes from ephemeris DE430

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Research in Astronomy and Astrophysics 2017年第12期17卷 89-94页

作者： Yong-Zhang Yang jin-Ling Li jin-song ping Hideo Hanada Shanghai Astronomical Observatory Chinese Academy of SciencesShanghai 200030China National Astronomical Observatories Chinese Academy of SciencesBeijing 100012China University of Chinese Academy of Sciences Beijing 100049China RISE Project National Astronomical Observatory of JapanOshu 0230861Japan

The Moon’s physical librations have been extensively studied, and elaborate researches have been developed for the purpose of deriving accurate modes of free librations. Our motivation comes from the Planetary and Lunar Ephemeris DE430 by JPL/NASA, which was created in April 2013,and is reported to be the most accurate lunar ephemeris today using the data from Gravity Recovery and Interior Laboratory（GRAIL）. Therefore, the residuals after fitting the model have reduced owing to improvement in the libration models, and the free librations embedded in the Euler angles have also improved. We use Fourier analysis to extract the approximate frequencies from DE430 and then a quadratic interpolation method is used to determine higher accuracy frequencies. With the frequencies,the linear least-squares fitting method is employed to fit the lunar physical librations to DE430. From this analysis we identified the three modes of free physical librations, and estimated the amplitudes as 1.471′′in longitude, 0.025′′in latitude and 8.19′′× 3.31′′for the wobble, with the respective periods of1056.16, 8806.9 and 27262.99 d. Since the free librations damp with time, they require recent excitation or a continuous stimulating mechanism in order to sustain.

关键词： Moon physical librations Fourier analysis least squares method

Influence of the layered Moon and Earth’s orientation on lunar rotation

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Research in Astronomy and Astrophysics 2020年第2期20卷 45-52页

作者： Yong-Zhang Yang jin-song ping Jian-Guo Yan jin-Ling Li State Key Laboratory of Information Engineering in Surveying Mapping and Remote SensingWuhan UniversityWuhan 430070China Instituto de Astronomia y Ciencias Flanetarias de Atacama Universidad de AtacamaCopayapu 485Chile National Astronomical Observatories Chinese Academy of SciencesBeijing 100012China Shanghai Astronomical Observatory Chinese Academy of SciencesShanghai 200030China University of Chinese Academy of Sciences Beijing 100049China

One of the most efficient ways to probe the lunar inner structure at present is through the study of its *** and range rate(Doppler) data between the Chang’E-3 lander and station on the Earth were collected from the beginning of the Chang’E-3 lunar mission in *** observation data,taken together with the existing lunar laser ranging data,provide a new approach to extend research on the Earth-Moon *** high precision of current observation data imposes exacting demands,making it necessary to include previously neglected *** this paper,motivated by progress of the Chinese lunar exploration project and to use its data in the near future,two lunar models:a one-layer model and a two-layer model with a fluid core,were applied to the rotational equations based on our implemented algorithm of the Moon’s *** was a difference of about 0.5′′in φ and ψ,but 0.2′′in θ between the two *** result confirms that stratification of the inner structure of the Moon can be inferred from rotation *** also added precise Earth rotation parameters in our model;the results show that this factor is negligible at present,due to the limited precision of the existing *** results will help us understand the rotational process clearly and build a more realistic Earth-Moon model when we combine Lunar Laser Ranging data with high precision radio data to fit lunar motion in the near future.

关键词： Moon rotation model numerical integration Earth orientation parameters

麻杏石甘汤联合阿奇霉素治疗小儿支气管肺炎的疗效及对其炎症因子的影响

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世界中西医结合杂志 2024年第5期19卷 1031-1035页

作者：钱晨佳杨莹莹宋锦萍江阴市中医院儿科江苏江阴214400

目的观察麻杏石甘汤联合阿奇霉素治疗小儿支气管肺炎的疗效及对其炎症因子的影响。方法选取2019年8月—2022年12月期间江阴市中医院收治的支气管肺炎患儿89例,按照随机数字表法将其分为对照组44例和观察组45例。对照组予阿奇霉素治疗... 详细信息

目的观察麻杏石甘汤联合阿奇霉素治疗小儿支气管肺炎的疗效及对其炎症因子的影响。方法选取2019年8月—2022年12月期间江阴市中医院收治的支气管肺炎患儿89例,按照随机数字表法将其分为对照组44例和观察组45例。对照组予阿奇霉素治疗,观察组在对照组基础上联合麻杏石甘汤治疗,连续5 d为1个疗程。观察比较两组患儿临床疗效,治疗前后肺功能(FEV1、PEF25、FVC)、血气(PaO_(2)、PaCO_(2))、炎症因子[肿瘤坏死因子(Tumor necrosis factor,TNF-α)、血清白介素6(Interleukin 6,IL-6)、超敏C-反应蛋白(hypersensitive C-reactive protein,hs-CRP)、降钙素原(Procalcitonin,PCT)]水平。结果治疗后观察组总有效率95.56%(43/45)高于对照组84.09%(37/44),差异有统计学意义(P<0.05)。治疗后两组患儿TNF-α、IL-6、hs-CRP、PCT炎症因子水平较治疗前明显降低,差异有统计学意义(P<0.05);且观察组低于对照组,差异有统计学意义(P<0.05)。治疗后两组患者FEV1、PEF25、FVC、PaO_(2)水平均较治疗前升高,PaCO_(2)水平均较治疗前降低,差异有统计学意义(P<0.05);且观察组FEV1、PEF25、FVC、PaO_(2)水平均明显高于对照组,PaCO_(2)水平明显低于对照组,差异有统计学意义(P<0.05)。结论在小儿支气管肺炎治疗的过程中使用麻杏石甘汤与阿奇霉素联合治疗能有效提高患儿治疗总好转率,降低患者TNF-α、IL-6、hs-CRP、PCT等炎症因子水平,显著改善患儿肺功能以及血气状况,对小儿支气管肺炎的治疗具有重要帮助,应广泛应用在临床治疗中。

关键词：麻杏石甘汤阿奇霉素小儿支气管肺炎治疗疗效炎症因子水平

Ionospheric inversion of the Venus Express radio occultation data observed by Shanghai 25m and New Norcia 35m antennas

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Research in Astronomy and Astrophysics 2015年第9期15卷 1559-1570页

作者： Su-Jun Zhang Nian-Chuan Jian jin-Ling Li jin-song ping Cong-Yan Chen Ke-Fei Zhang Shanghai Astronomical Observatory Chinese Academy of Sciences Key Laboratory of Planetary Sciences Chinese Academy of Sciences University of Chinese Academy of Sciences Key Laboratory of Lunar and Deep Space Exploration National Astronomical ObservatoriesChinese Academy of Sciences School of Information Science and Engineering Southeast University RMIT University Melbourne

Electron density profiles of Venus＇ ionosphere are inverted from the Venus Express （VEX） one-way open-loop radio occultation experiments carried out by the Shanghai 25 m antenna from November 2011 to January 2012 at solar maximum conditions and by the New Norcia 35 m antenna from August 2006 to June 2008 at solar intermediate conditions. The electron density profile （from 110 km to 400 km）, retrieved from the X-band egress observation at the Shanghai station, shows a single peak near 147 km with a peak density of about 2 × 10^4 cm-3 at a solar zenith angle of 94° As a comparison, the VEX radio science （VeRa） observations at the New Norcia station were also examined, including S- and X-band and dual-frequency data in the ingress mode. The results show that the electron density profiles retrieved from the S-band data are more analogous to the dual-frequency data in terms of the profile shape, compared with the X-band data. Generally, the S-band results slightly underestimate the magnitude of the peak density, while the X-band results overestimate it. The discrepancy in the X-band profile is probably due to the relatively larger unmod- eled orbital errors. It is also expected that the ionopause height is sensitive to the solar wind dynamical pressure in high and intermediate solar activities, usually in the range of 200-1000 km on the dayside and much higher on the nightside. Structural variations （＂bulges＂ and fluctuations） can be found in the electron density profiles during intermediate solar activity, which may be caused by the interaction of the solar wind with the ionosphere. Considerable ionizations can be observed in Venus＇ nightside ionosphere, which are unexpected for the Martian nightside ionosphere in most cases.

关键词： planets and satellites: terrestrial planets -- planets and satellites: atmo-spheres -- planets and satellites: detection

An Improved Mumford-Shah Model and Its Applications to Image Processing with the Piecewise Constant Level Set Method

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自动化学报 2007年第12期33卷 1259-1262页

作者： song jin-ping LI Shuai-Jie Institute of Applied Mathematics College of Mathematics and Information ScienceHenan UniversityKaifeng 475004P.R.China

为快分割并且降噪，提高 penalization 学期的古典 Mumford-Shah (MS ) 模型需要，即增加 penalization 参数，它导致目标的渐渐的消失。在这份报纸，我们建议一个改进 Mumford-Shah (IMS ) 模型避免现象，并且采用 piecewise 常数水平... 详细信息

为快分割并且降噪，提高 penalization 学期的古典 Mumford-Shah (MS ) 模型需要，即增加 penalization 参数，它导致目标的渐渐的消失。在这份报纸，我们建议一个改进 Mumford-Shah (IMS ) 模型避免现象，并且采用 piecewise 常数水平集合方法(PCLSM ) 和坡度降下方法解决最小化问题。数字实验被给显示出新模型和算法的效率和优点。

关键词：分段持续水平集方法分割降噪经典MS模型最小化算法