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Retrieval of aerosol optical constants from angular light-scattering measurement signals using principal component analysis approach

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Particuology 2019年第2期17卷 210-218页

作者： Zhenzong He Junkui Mao Xingsi Han Hao Wang Jiangsu Province Key Laboratory of Aerospace Power System College of Energy and Power Engineering Nanjing University of Aeronautics and Astronautics Nanjing 210016 China

An angular light-scattering measurement (ALSM) method combined with the probability density function-bmsed ant colony optimization algorithm (PDF-ACO) is proposed for retrieval of aerosol optical constants. An optimal measurement angle selection method using a principal component analysis (PCA) approach is developed to improve retrieval accuracy. Results indicate that optimized angle selection can ensure retrieval accuracy. The aerosol optical constants over Beijing, China, which are available from the Aerosol Robotic Network (AERONET), are then rec on structed. The ALSM method's con vergence properties are also studied via comparison w让h those of the light reflection-transmittance measurement (LRTM) method. Results retrieved using the ALSM method show better convergence speed and accuracy than those retrieved using the LRTM method because the ALSM method does not require solution of the radiative transfer equation and allows more useful signals to be obtained. Additionally, the inverse accuracy of the refractive index results is better than that of the absorption index results;this is attributed to differences between the monodromic characteristics of the refractive index and absorption index retrieval results. All results confirm that the combination of the ALSM method w让h the PDF-ACO algorithm and the optimal measurement angle selection method provides effective and reliable aerosol optical constant reconstructio n.

关键词： Angular light-scattering measurement method Aerosol optical constant Ant colony optimization algorithm Principal comp orient analysis Inverse radiation problem

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交错在Lorient的时光

商务旅行 2007年第12期 64-73页

作者：任松

法国布列塔尼南端的洛里昂(Lorient)的历史是与它面对大西洋这个战略地理位置密不可分的。1666年,东印度公司的所在地就在现在路易港的位置。东印度公司当时与亚洲各国进行香料贸易,东方L'orient,也因此成为这个新城市的名字。在第二次... 详细信息

法国布列塔尼南端的洛里昂(Lorient)的历史是与它面对大西洋这个战略地理位置密不可分的。1666年,东印度公司的所在地就在现在路易港的位置。东印度公司当时与亚洲各国进行香料贸易,东方L'orient,也因此成为这个新城市的名字。在第二次世界大战期间,洛里昂几乎全被炸毁,于20世纪50年代重建。11月的洛里昂阳光极好,空气清透。在洛里昂交错的时间和空间里,在二战的遗迹中,我的精神游荡在城市的上空。

关键词：路易港露天电影清透东印度公司 orient 我不知道布列塔尼游来游去青年男子右手边

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GEOPHYSICS

Abstracts of Chinese Geological Literature 2018年第4期34卷 12-15页

The paleomagnetic method has been commonly used to orient the un — oriented borehole core, but its feasibility and reliability remain unclear due to the complexity of remanence. This study investigated the feasibility of orientation of the Cretaceous Continent Scientific Drilling (CCSD) borehole LK — I in the Jiaolai Basin, Shandong Province, using the characteristic remanent magnetization (ChRM) and viscous remanent magnetization (VRM).

关键词： The paleomagnetic commonly used to orient characteristic remanent

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MATHEMATICAL GEOLOGY

Abstracts of Chinese Geological Literature 2005年第4期21卷 147-150页

20052491 Feng Baoai (Inner Mongolian Institute of Geological Survey, Hohhot 010020, China); Di Zhiqiang Discussion on the Procedure of the Space Database of Hydrogeology in Western Songliao Plain (Geology and Resources, ISSN1671-1947, CN21-1458/P, 13(1), 2004, p.47-51, 2 illus., 3 refs.) Key words: evaluation of groundwater resources, data bases, Songliao Plain The Hydrogeologic Space Database of Investigation and Assessment for Groundwater in Western Songliao Plain adopts MS Office Access 2000 for date inputting, with the software of MapGIS as a graphic tool platform. To establish the database, a uniform standardized style and an operation guide is followed. An instruction manual is made according to the investigation and assessment project. A uniform sub-graph database system is established, adopting geographic base maps with the same scale as basic graphs for the database. Before the inputting and linking of inner attributes, the result graphs between each sector should be matched together. 20052492 Gan Lu (National Research Center of Geoanalysis, Beijing 100037, China); Wu Xiaojun The General Information System for Geological Reference Materials and Standard Methods (Rock and Mineral Analysis, ISSN0254-5357, CN11-2131/TD, 23(3), 2004, p.216-220, 6 illus., 2 refs.)[WTHZ][STHZ] Key words: chemical analysis, data

关键词： Hangzhou Guangdong Hubei Chengdu tables Wuhan Guangzhou triple estimates orient

An analysis of The Last Emperor from the perspective of Post-colonialism

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海外英语 2013年第1X期 185-186页

作者：刘燕燕中国矿业大学(北京) 北京100083

The Italian film The Last Emperor has strong color of post-colonialism,therefore,my paper will analyze the film from the perspective of *** two important terms in post-colonialism theory closely related to the film are "orientalism",and "the other".My paper focus on analyzing the China's image in European films from the angles of "oriental ism" and "the other".My paper reveals that the China's image in European films can't break away from orientalism,and the western world describe the oriental world according to its own imagination and think itself as a savior to the oriental ***,what we Chinese should do is being initiative to describe ourselves to shape a new image of real China.

关键词： The Last Emperor post-colonialism the Other orient

IMMERSIONS OF k-CONNECTED CLOSED MANIFOLDS INTO SOME EUCLIDEAN SPACES

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Chinese Science Bulletin 1987年第9期32卷 577-580页

作者：郭景美 Department of Mathematics Nankai University Tianjinn this note we will obtain the following two results:(1) Suppose W is a k-connected closed n-manifold (if k=0 W is orientable). Let M=(?) 0≤h≤2k and n-2h≥5. Then any immersion of M into R~(2n-h-1) can be extended to an immersion of W into R~(2n-h-1). (2) The set of regular homotopy classes of all immersions of

In this note, we will obtain the following two results:（1） Suppose W is a k-connected closed n-manifold （if k=0, W is orientable）. Let M=（?）, 0≤h≤2k and n-2h≥5. Then any immersion of M into R2n-h-1 can be ext... 详细信息

关键词： immersion manifold embedding connected neighborhood simply orient bundle differentiable sections

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李建伟:设计巅峰的舞者

城市住宅 2007年第10期14卷 72-73页

作者：唐艳明黄鑫《城市住宅》记者不详

去年以来，李建伟这个名字在国内规划设计领域引起了广泛关注，作为美国EDSA orient总裁兼首席设计师，他逻辑慎密而又富于跳跃性，思想深邃却又深入浅出，视野国际兼具中国特色。

关键词：李建伟规划设计性格 EDSA orient 全球战略

政治理性与东方智慧：邓小平、李光耀思维方式之比较

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320 MWe机组主汽门试验期间反应性计算

政治学 2009年第4期

作者：吕元礼

中国改革开放的总设计师邓小平和新加坡国父李光耀的思维方式表现出富有东方智慧的理性精神。邓小平“不管白猫、黑猫，捉住老鼠就是好猫”的“猫论”和李光耀一切以行得通为原则的“行得通论”，体现了实用理性；邓小平“摸着石头过河... 详细信息

中国改革开放的总设计师邓小平和新加坡国父李光耀的思维方式表现出富有东方智慧的理性精神。邓小平“不管白猫、黑猫，捉住老鼠就是好猫”的“猫论”和李光耀一切以行得通为原则的“行得通论”，体现了实用理性；邓小平“摸着石头过河，走一步，看一步”的“摸论”和李光耀鞋子“穿得越久，就越觉得合适”的“鞋论”，体现了渐进理性；邓小平“不搞争论”、“抓紧时间干”的“不争论”和李光耀“是社会主义，是资本主义，将来怎样，让下一代去决定”的“存而不论”，体现了实践理性。

关键词：理性精神儒家东方邓小平李光耀 rationality Confucianism orient Deng Xiaoping Lee Kuan Yew

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科技视界 2021年第34期 151-154页

作者：周忠政中核核电运行管理有限公司浙江嘉兴314300

320 MWe机组定期执行主汽门试验,试验中需要进行升降功率的操作,因此需要进行反应性计算。错误的反应性引入可能导致超功率瞬态、氙震荡加剧,轴向功率偏差超目标带、轴向功率峰超差等,影响反应堆安全。长久以来,主汽门试验期间的反应性... 详细信息

320 MWe机组定期执行主汽门试验,试验中需要进行升降功率的操作,因此需要进行反应性计算。错误的反应性引入可能导致超功率瞬态、氙震荡加剧,轴向功率偏差超目标带、轴向功率峰超差等,影响反应堆安全。长久以来,主汽门试验期间的反应性计算均委托设计院计算,增加了经济和时间成本,且缺少灵活性。因此,物理人员利用自主研发的orient软件,综合影响反应性计算的各因素,对主汽门试验期间的反应性控制方案进行自主计算。

关键词： 320 MWe机组主汽门试验反应性计算 orient