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高校学科质量与区域科技创新

世界经济 2024年 65-98页

作者：范剑勇张丰唐为 1.复旦大学世界经济研究所 2.复旦大学经济学院 3.上海财经大学公共经济与管理学院复旦大学世界经济研究所上海财经大学公共经济与管理学院复旦大学经济学院

Exploiting a large-scale relocation of university departments in the 1.50s, this paper examines the impact of university subject quality on local innovation at the disciplinary level, using the net number of department relocation across cities as IV. We find that: 1. A 1. improvement of university subject rating increases the number of local patent applications and patent citations related to the subject by 0.6% and 1.2. respectively; 2. The impact of university subject quality on local innovation structure only exists in medium and high-tech industries, and is generally stronger in the central and western provinces; 3. Collaborated R&D between universities and firms, the citation of university patents by local social patents, and the improvement of specific human capital in the local labor market constitutes three important channels for the local spillover effect of the university subjects. The policy implications of this paper help shed light on how to facilitate innovation and high-quality development of the economy.

关键词：学科质量科技创新院系调整

北京市体育局北京市教育委员会关于印发《北京市体育类校外培训机构设置标准(试行)》的通知(京体产业字〔2.2.〕1.号)

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北京市人民政府公报 2024年第21期 84-94页

作者： 1.北京市体育局 2.北京市教育委员会北京市体育局北京市教育委员会

各区体育局、各区教委,北京经济技术开发区社会事业局,燕山体育运动中心、燕山教委,各相关单位:现将《北京市体育类校外培训机构设置标准(试行)》印发给你们,请认真贯彻落实。

关键词：体育类北京经济技术开发区校外培训机构体育局设置标准体育运动中心北京市印发

The regular representation and regular covariant representation of crossed products of Woronowicz C^(*)-algebras

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Science China Mathematics 2005年第9期48卷 1245-1259页

作者： ZHANG Xiaoxia~(1.2. & GUO Maozheng~(1.3. 1. School of Mathematical Sciences,Peking {1.,beijing 1.0871.China 2. Department of Mathematics,Yantai {1.,Yantai 2.4005,China 3. LMAM,Peking {1.,beijing 1.0871.China School of Mathematical Sciences Peking University Beijing China Department of Mathematics Yantai University Yantai China LMAM Peking University Beijing China

In this paper,it is shown that the regular representation and regular covariant representation of the crossed products A×α G correspond to the twisted multiplicative unitary operators,where A is a Woronowicz C~*-algebra acted upon by a discrete group ***,it is also shown that the regular covariant C~*-algebra is the Woronowicz C~*-algebra which corresponds to a multiplicative ***,an explicit description of the multiplicative unitary operator for C(SU_q(2. )×α (?) is given in terms of those of the Woronowicz C~*-algebra C(SU_q(2. ) and the discrete group G.

关键词： multiplicative unitary operator, Woronowicz C*-algebra, crossed product.

北京市统计局国家统计局北京调查总队关于印发《北京市统计行政处罚裁量基准》的通知(京统发[2.2.]1.3.)

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北京市人民政府公报 2024年第19期 54-71页

作者： 1.北京市统计局 2.国家统计局北京调查总队北京市统计局国家统计局北京调查总队

市局所属各单位、总队各处室,各区统计局、经济社会调查队,北京经济技术开发区经济发展局、经济社会调查队,国家统计局各区调查队:根据《国家统计局关于进一步规范统计行政处罚裁量基准制定的指导意见》(国统字[2.2.]1.7号)要求,北京市... 详细信息

市局所属各单位、总队各处室,各区统计局、经济社会调查队,北京经济技术开发区经济发展局、经济社会调查队,国家统计局各区调查队:根据《国家统计局关于进一步规范统计行政处罚裁量基准制定的指导意见》(国统字[2.2.]1.7号)要求,北京市统计局、国家统计局北京调查总队结合北京统计调查工作及经济社会发展实际,对《北京市统计行政处罚裁量基准(2.2.年版)》进行了修订,并经北京市统计局第54次党组会议和国家统计局北京调查总队第3.次党组会议审议通过。现将《北京市统计行政处罚裁量基准》印发给你们,请认真执行。

关键词：裁量基准党组会议国家统计局经济发展局北京经济技术开发区经济社会调查通知印发

基于车辆轨迹数据的港口集卡预约系统配额方案优化

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大连海事大学学报 2024年

作者：马文耀王玉孙世超 1.广东海洋大学船舶与海运学院 2.大连海事大学交通运输工程学院广东海洋大学船舶与海运学院大连海事大学交通运输工程学院

港口集卡预约系统的应用能显著减少集卡在港周转时间，提升码头运营效率，进而增强港口竞争力。然而，在优化预约配额方案时，现有方法面临诸多挑战，包括动态性、随机性捕捉难，理论假设局限，以及数据获取处理复杂等。为此，本文创新... 详细信息

港口集卡预约系统的应用能显著减少集卡在港周转时间，提升码头运营效率，进而增强港口竞争力。然而，在优化预约配额方案时，现有方法面临诸多挑战，包括动态性、随机性捕捉难，理论假设局限，以及数据获取处理复杂等。为此，本文创新性地利用集卡的GPS轨迹数据，全面捕获了集卡从到达港口至完成作业的全过程周转时间，并基于此建立了单位预约时间窗口内集卡到达数量与其在港总周转时间之间的映射关系。进一步地，利用该映射关系，构建了一个更为精确简洁的配额优化模型，并对集卡预约配额方案进行了优化求解。实验结果表明，优化后的预约配额方案有效减少了高峰期的集卡到达量，同时提高了低谷期的车辆到达数，从而大幅节省了集卡在港的总周转时间。这一成果不仅有助于缓解港口的拥堵压力，也为进一步提升港口运营效率提供了有力支撑。

关键词：集卡预约系统配额方案优化 GPS轨迹数据车辆周转时间

On the periodic solutions of a type of differential-iterative equations

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Chinese Science Bulletin 1998年第3期43卷 204-206页

作者： GE Weigao 1. LIU Zhengrong 2.and YU Yuanhong 3.1. Department of Applied Mathematics, {1. Institute of Technology, {1. 1.0081. China 2. Department of Mathematics, Yunnan {2., Kunming 650091. China 3. Institute of Applied Mathematics, C Department of Applied Mathematics Beijing Institute of Technology Beijing China Department of Mathematics Yunnan University Kunming China Institute of Applied Mathematics Chinese Academy of Sciences Beijing China

Sufficient conditions for the existence of periodic solutions to a type of nonautonomous differential_iterative equations are given.

关键词： differential_iterative equation periodic solution fixed point.

Optimal reactions for the synthesis of superheavy nucleus ^(2.0)Hs

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Science China(Physics,Mechanics & Astronomy) 2006年第6期49卷 641-648页

作者： LIU Zuhua1.3.& BAO Jingdong1.2.1. Key Laboratory of Beam Technology and Material Modification of Ministry of Education, {1. Normal university, {1. 1.0875, China 2. Physics Department, {1. Normal university, {1. 1.0875, China 3. China Institute of Atomic Energy, {1. 1.2.1., China Key Laboratory of Beam Technology and Material Modification of Ministry of Education Beijing Normal University Beijing China China Institute of Atomic Energy Beijing China Physics Department Beijing Normal University Beijing China

The superheavy nucleus 2.0Hs is expected to be a “double-magic” deformed nucleus. We have calculated its cross sections of evaporation residue for the reactions 2.8Cm(2.Mg,4n)2.0Hs, 2.4Pu(3.Si,4n)2.0Hs, 2.8U(3.S,4n)2.0Hs and 2.6Ra(48Ca,4n)2.0Hs using a two-parameter Smoluchowski equation. It is found from our results that 2.6Ra(48Ca,4n)2.0Hs and 2.8U(3.S,4n)2.0Hs are two optimal reactions for the synthesis of the superheavy nucleus 2.0Hs due to their large negative Q-values.

关键词： diffused fusion barrier,Smoluchowski equation,superheavy nuclei.

The mathematical model of wetting angle of heterogeneous nucleation

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Science China(Technological Sciences) 2004年第4期47卷 391-397页

作者： HUANG Cheng1. SONG Bo1. MAO Jinghong2.& ZHAO Pei3.1. School of Metallurgical and Ecological Engineering, {1. of Science and Technology beijing, beijing 1.0083. China 2. School of Material Science, {1. of Science and Technology beijing, beijing 1.0083. China 3. Central Iron and Steel Research Institute, beijing 1.0081. China School of Metallurgical and Ecological Engineering University of Science and Technology Beijing School of Material Science University of Science and Technology Beijing

The heterogeneous nucleation has been analyzed in terms of the thermodynamic theory, and the mathematical model of wetting angle of heterogeneous nucleation has been developed based on the dynamic requirements of hetero- and homogeneous nucleation. With the wetting angel model, the wetting angles of different catalysts in liquid iron have been calculated. The result shows that the wetting angle of most catalysts is smaller than 40, and the value of f() is far less than 1. The wetting angles of TiN, TiC and RE2.3.are smaller, while the wetting angle of MnO is bigger among the ordinary nucleation catalysts. The wetting angles calculated by this model are in agreement with the results of other research work.

关键词： heterogeneous nucleation, mathematical model, wetting angle, undercooling.

Conceptual design,data model and key techniques of“3. Assistant”

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中国有色金属学会会刊：英文版 2011年第S3期21卷 692-698页

作者： LI Qing-yuan1. ZHANG Xuan2. JIN Yang2. ZHOU Hui3. WANG Qian-jin3.WEI Zhan-yin1.1. Key Laboratory of geo-Informatics, Chinese Academy of Surveying and Mapping, beijing 1.083., China 2. School of geo-Science and Surveying Engineering, China university of Mining and Technology, beijing 1.0083. China 3. School of geomatics, Liaoning Technical university, Fuxin 1.0}000, China Key Laboratory of geo-Informatics Chinese Academy of Surveying and Mapping Beijing 100830 China School of geo-Science and Surveying Engineering China University of Mining and Technology Beijing 100083 China School of geomatics Liaoning Technical University Fuxin 123000 China

Conceptual design, data model and key techniques of "geo-engineer 3. assistant", an underground 3. GIS oriented to geology and mine application, were discussed. In particular, the importance of high-order smoothing triangular pieces to surface's fine expression in geological modeling was emphasized. The contour mode is the most favorite mode of the three modes about surface expression: DEM, TIN and contour. Topology in underground 3. modeling with CAGD was compared. From the view of boundary and coboundary, which is soul of IS {3.{3.7 (geographic information spatial schema), 3. underground topology was re-examined.

关键词： 3. assistant true 3. GIS fine expression of surface contour mode 3. topology