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Gradient analysis of landscape spatial and temporal pattern changes in Beijing metropolitan area

Science china(Technological Sciences) 2010年第S1期53卷 91-98页

作者： YANG YeTao1,ZHOU QiMing2,GONG JianYa3 & WANG YingYing4 1 Institute of Geophysics and Geomatics,china University of Geosciences,wuhan 4.0074.china 2 Department of Geography,Hong Kong Baptist University,Hong Kong 3 State Key Laboratory of Information Engineering in Surveying,Mapping and Remote Sensing,wuhan University,wuhan 4.0074.china 4 hubei provincial bureau of meteorology,wuhan 4.0074.china Institute of Geophysics and Geomatics China University of Geosciences Wuhan China Department of Geography Hong Kong Baptist University Hong Kong China State Key Laboratory of Information Engineering in Surveying Mapping and Remote Sensing Wuhan University Wuhan China hubei provincial bureau of meteorology Wuhan China

The gradient based landscape metrics analysis is now widely used to study the landscape pattern changes in respond to the *** order to discover the trend of spatio-temporal changes in Beijing metropolitan area during the past 15 years,several landscape metrics are computed using a moving window along a 96 km long transect across Beijing metropolitan area from west to ***,the spatial extent of sub-landscape,which is determined by the moving window’s size,is profoundly *** results show that the metrics varies smoothly and regularly along the selected transect when the window size is greater than 6 km×6 km,and irregularly fluctuated for the smaller window size,that the spatial and temporal landscape characteristics of Beijing city match the hypothetical framework of spatio-temporal urban sprawl in the form of alternating processes of diffusion and coalescence well,and that some new trends of the urban sprawl style in Beijing metropolitan area,such as leap-frog manner,are also detected by the gradient landscape analysis.

关键词： gradient analysis landscape metrics spatio-temporal urban expansion multi-extent

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Refrigerant Control Strategies for Residential Air-Conditioning and Heat-Pump System

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湖南大学学报（自然科学版） 2009年第S1期36卷 91-95页

作者： SU Shun-yu,ZHANG Chun-zhi,CHEN Jian(College of Urban Construction,wuhan University of Science and Technology,wuhan,hubei 430070,china) College of Urban Construction Wuhan University of Science and Technology Wuhan 430070 China

This paper simulated the optimal refrigerant charge inventory of a refrigeration system in air-conditioning operation and heat-pump operation respectively,and studied the refrigerant control strategies in this *** void fraction in two-phase fluid region was calculated by Harms *** based on distributed parameter model and Harms model,the refrigerant charge inventory in condenser and evaporator were calculated and analyzed in air-conditioning conditions and heat-pump conditions,*** calculating results of different refrigerant mass between refrigeration and heating conditions indicate that the optimal refrigerant charge inventory in heat-pump conditions is lower than that in air-conditioning *** avoid the decrease of COP due to the surplus refrigerant in heating conditions,we introduced the liquid reservoir control method and associate capillary control *** of them could increase the heating capacity of the air-source heat *** difference of optimal refrigerant charge inventory in air-conditioning and heat-pump system can be controlled by the liquid reservoir or the associate capillary.

关键词： air-source heat pump control strategy distributed parameter model charge inventory

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Hochschild cohomology of special biserial algebras

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Science china Mathematics 2007年第8期50卷 1117-1128页

作者： Yun-ge XU Faculty of Mathematics & Computer Science,hubei University,wuhan 430062,china Faculty of Mathematics & Computer Science Hubei University Wuhan China

Based on a four-term exact sequence,the formulae on the dimensions of the first and the second Hochschild cohomology groups of special biserial algebras with normed bases are obtained in terms of combinatorics.

关键词： special biserial algebra Hochschild cohomology medal 16E40 16G10

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关于山东省2023年预算执行情况和2024年预算草案的报告——2024年1月22日在山东省第十四届人民代表大会第二次会议上

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山东省人民政府公报 2024年第8期 40-51页

作者： Shandong provincial Finance Department 山东省财政厅

各位代表:受省人民政府委托,现将全省2023年预算执行情况和2024年预算草案提请省十四届人大二次会议审议,并请省政协委员提出意见。一、2023年全省和省级预算执行情况2023年,全省上下坚持以习近平新时代中国特色社会主义思想为指导,深... 详细信息

各位代表:受省人民政府委托,现将全省2023年预算执行情况和2024年预算草案提请省十四届人大二次会议审议,并请省政协委员提出意见。一、2023年全省和省级预算执行情况2023年,全省上下坚持以习近平新时代中国特色社会主义思想为指导,深入贯彻党的二十大精神,扎实开展学习贯彻习近平新时代中国特色社会主义思想主题教育.

关键词：预算执行情况习近平新时代中国特色社会主义思想预算草案主题教育人民代表大会山东省学习贯彻

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Application of the moist vorticity vector in the analysis of a heavy rainfall event in North china

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Progress in Natural Science:Materials International 2007年第12期17卷 1457-1465页

作者： Zhao Yu1,2,3, Wang Jianguo4 and Xue Deqiang2(1. Laboratory of Cloud-Precipitation Physics and Severe Storms, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, china 2. Shandong provincial Meteorological Observatory, Jinan 250031, china 3. Graduate University of Chinese Academy of Sciences, Beijing 100039, china 4. Shandong provincial Meteorological bureau, Jinan 250031, china) Laboratory of Cloud-Precipitation Physics and Severe Storms Institute of Atmospheric Physics Chinese Academy of Sciences Beijing 100029 China Shandong provincial Meteorological Observatory Jinan 250031 China Graduate University of Chinese Academy of Sciences Beijing 100039 China Shandong provincial Meteorological bureau Jinan 250031 China

The moist vorticity vector (MVV), defined as (ζa×▽qv)/ρ introduced by Gao et al. is used to study a heavy rainfall event in North china. The MVV has zonal, meridional and vertical components in a three-dimensional framework. Analysis of domain-mean and mass-integrated quantities shows that the variation of the vertical component of the MVV closely follows the variation of the cloud hydrometeors, with a linear correlation coefficient of 0.95, indicating that the vertical component of the MVV is strongly associated with midlatitude convection. Further analysis shows that the vertical component of the MVV reflects the interaction between the horizontal vorticity and the horizontal specific humidity gradient, which can associate dynamic and thermodynamic processes with cloud microphysical processes. Thus, this study can help to understand how the interaction between circulations and clouds aids the development of convection, and the MVV can be used to trace the development and evolution of heavy rainfall.

关键词： moist vorticity vector heavy rainfall modeling study.

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Multi-spectral image fusion method based on two channels non-separable wavelets

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Science in china(Series F) 2008年第12期51卷 2022-2032页

作者： LIU Bin1,2 & PENG JiaXiong3 1 School of Mathematics and Computer Science, hubei University, wuhan 430062, china 2 Key Laboratory of Applied Mathematics of hubei Province, wuhan 430062, china 3 Institute of Image Recognition and Artificial Intelligence, Huazhong University of Science and Technology, wuhan 4.0074, china School of Mathematics and Computer Science Hubei University Key Laboratory of Applied Mathematics of hubei Province Institute of Image Recognition and Artificial Intelligence Huazhong University of Science and Technology

A construction method of two channels non-separable wavelets filter bank which dilation matrix is [1, 1; 1,-1] and its application in the fusion of multi-spectral image are presented. Many 4×4 filter banks are designed. The multi-spectral image fusion algorithm based on this kind of wavelet is proposed. Using this filter bank, multi-resolution wavelet decomposition of the intensity of multi-spectral image and panchromatic image is performed, and the two low-frequency components of the intensity and the panchromatic image are merged by using a tradeoff parameter. The experiment results show that this method is good in the preservation of spectral quality and high spatial resolution information. Its performance in preserving spectral quality and high spatial information is better than the fusion method based on DWFT and IHS. When the parameter t is closed to 1, the fused image can obtain rich spectral information from the original MS image. The amount of computation reduced to only half of the fusion method based on four channels wavelet transform.

关键词： image fusion non-separable wavelets multi-spectral image panchromatic image

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Dusty cloud radiative forcing derived from satellite data for middle latitude regions of East Asia

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Progress in Natural Science:Materials International 2006年第10期16卷 1084-1089页

作者： HUANG Jianping , WANG Yujie, WANG Tianhe and YI Yuhong ( College of Atmospheric Sciences, Lanzhou University, Lanzhou 730000, china Gansu provincial Meteorological bureau, Lanzhou 730020, china) College of Atmospheric Sciences Lanzhou University Lanzhou 730000 China

The dusty cloud radiative forcing over the middle latitude regions of East Asia was estimated by using the 2-year (July 2002-June 2004) data of collocated clouds and the Earth's radiant energy system (CERES) scanner and moderate resolution imaging spectroradiometer (MODIS) from Aqua Edition IB SSF (single scanner footprint). The dusty cloud is defined as the cloud in dust storm environment or dust contaminated clouds. For clouds growing in the presence of dust, the instantaneous short-wave (SW) forcing at the top of the atmosphere (TOA) is about - 275. 7 W/m for cloud over dust (COD) region. The clouds developing in no-dust cloud (CLD) regions yield the most negative short-wave (SW) forcing ( - 311.0 W/m2), which is about 12.8% stronger than those in COD regions. For long-wave (LW) radiative forcing, the no-dust cloud (CLD) is around 102.8 W/m2 , which is 20% less than the LW forcing from COD regions. The instantaneous TOA net radiative forcing for the CLD region is about - 208.2 W/m2, which is 42.1 % larger than the values of COD regions. The existence of dust aerosols under clouds significantly reduces the cooling effect of clouds.

关键词： dust storm cloud radiative forcing global warming dust aerosol-cloud-climate interaction.

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山东省2024年国民经济和社会发展计划

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山东省人民政府公报 2024年第8期 18-40页

作者： Shandong provincial Development and Reform Commission 山东省发展和改革委员会

一、2023年国民经济和社会发展计划执行情况2023年是全面贯彻落实党的二十大精神的开局之年,是三年新冠疫情防控转段后经济恢复发展的一年。全省上下坚持以习近平新时代中国特色社会主义思想为指导,牢记习近平总书记殷切嘱托,锚定“走... 详细信息

一、2023年国民经济和社会发展计划执行情况2023年是全面贯彻落实党的二十大精神的开局之年,是三年新冠疫情防控转段后经济恢复发展的一年。全省上下坚持以习近平新时代中国特色社会主义思想为指导,牢记习近平总书记殷切嘱托,锚定“走在前、开新局”,抢抓战略机遇、靶向攻坚突破,推动经济运行整体好转、绿色低碳高质量发展先行区建设强势开局,在稳增长、促发展、保安全中彰显了大省担当,省十四届人大一次会议审议批准的国民经济和社会发展计划主要预期目标和重点任务较好完成,新时代社会主义现代化强省建设迈出坚实步伐。

关键词：习近平新时代中国特色社会主义思想疫情防控先行区稳增长绿色低碳战略机遇高质量发展经济运行

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绘就新时代中小学科学教育美好画卷

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中小学校长 2024年第6期 23-26页

作者： Zhejiang provincial Education Department 浙江省教育厅

浙江省通过做好校内科学教育、内外资源联动、教育集成改革这“三篇文章”,統筹推动科学教育工作落地见效,逐步形成党委、政府统一领导,相关部门齐抓共管,校内校外共融共建的中小学科学教育新格局,全面提升省城内中小学生科学素养。

关键词：中小学科学教育 “双减” 省城实践

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The Climate Character about the Rainstorm andWaterlogging in the Middle Reaches of theChangjiang River

The Climate Character about the Rainstorm andWaterlogging in...

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中美定量降水监测与预报国际研讨会

作者： Zhou Yuehua AND Liu Min wuhan Central Observatory of hubei provincial Meteorological bureau

＜正＞ In the middle reaches of the Changjing *** are much more rainstrom than other area,and also is a important flood prevention zone in *** rainstrom disaster, locally heavy rain and continued large range rain are quite *** as famous "35.7" and "75.8" heavy rain are all taken place in this areas,"35.7" heavy rainstrom had 1076.1mm amount of precipitation in Wufeng of hubei within three days,and "75.8" heavy rainstrom had 630.4mm amount of precipitation in Changyang’s Dudewan of hubei.

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