General Fund Expenditures over Time
收藏Figshare
Figshare是一个在线数据共享平台,允许研究人员上传和共享各种类型的研究成果,包括数据集、论文、图像、视频等。它旨在促进科学研究的开放性和可重复性。
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China Health and Nutrition Survey (CHNS)
China Health and Nutrition Survey(CHNS)是一项由美国北卡罗来纳大学人口中心与中国疾病预防控制中心营养与健康所合作开展的长期开放性队列研究项目,旨在评估国家和地方政府的健康、营养与家庭计划政策对人群健康和营养状况的影响,以及社会经济转型对居民健康行为和健康结果的作用。该调查覆盖中国15个省份和直辖市的约7200户家庭、超过30000名个体,采用多阶段随机抽样方法,收集了家庭、个体以及社区层面的详细数据,包括饮食、健康、经济和社会因素等信息。自2011年起,CHNS不断扩展,新增多个城市和省份,并持续完善纵向数据链接,为研究中国社会经济变化与健康营养的动态关系提供了重要的数据支持。
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Simulation of rear wheel steering in a vehicle towing a single axle trailer with variable load distribution
This is the dataset for a publication on the stability of automotive vehicles when towing single axle trailers. The loading of the trailer is critical for stability, if the load distribution is too far back, then the trailer will begin to sway uncontrollably, dictating the track of the vehicle.In this research, small proportional control of the rear wheel steering of a larger towing vehicle is shown to be able to further stabilize the system easily, thus improving the safety margin. This is based on control measurements of the yaw angle, either directly measured or inferred from rear camera / parking sensor measurements.The simulation environment is Simulink and all scripts are included to initialise and plot the results. The work is based on the built in example "Two axle vehicle towing one axle trailer" with modifications to enable control algorithms for rear wheel steering control and variable load distribution. Reference for the original model is available at:T. M. Inc., Vehicle dynamics blockset version: 2.0 (r2023a) (2022). https://www.mathworks.comT. M. Inc., Trailer body 3dof documentation (2020). https://uk.mathworks.com/help/vdynblks/ref/trailerbody3dof.html<br>
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URPC系列数据集, S-URPC2019, UDD
URPC系列数据集包括URPC2017至URPC2020DL,主要用于水下目标的检测和分类。S-URPC2019专注于水下环境的特定检测任务。UDD数据集信息未在README中详细描述。
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全国 1∶200 000 数字地质图(公开版)空间数据库
As the only one of its kind, China National Digital Geological Map (Public Version at 1∶200 000 scale) Spatial Database (CNDGM-PVSD) is based on China' s former nationwide measured results of regional geological survey at 1∶200 000 scale, and is also one of the nationwide basic geosciences spatial databases jointly accomplished by multiple organizations of China. Spatially, it embraces 1 163 geological map-sheets (at scale 1: 200 000) in both formats of MapGIS and ArcGIS, covering 72% of China's whole territory with a total data volume of 90 GB. Its main sources is from 1∶200 000 regional geological survey reports, geological maps, and mineral resources maps with an original time span from mid-1950s to early 1990s. Approved by the State's related agencies, it meets all the related technical qualification requirements and standards issued by China Geological Survey in data integrity, logic consistency, location acc racy, attribution fineness, and collation precision, and is hence of excellent and reliable quality. The CNDGM-PVSD is an important component of China' s national spatial database categories, serving as a spatial digital platform for the information construction of the State's national economy, and providing informationbackbones to the national and provincial economic planning, geohazard monitoring, geological survey, mineral resources exploration as well as macro decision-making.
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