中国第38次南极科学考察(2021-2022年)南大洋海水持久性有机污染物分析数据|极地海洋污染数据集|环境科学数据集
收藏Breast Ultrasound Images (BUSI)
小型(约500×500像素)超声图像,适用于良性和恶性病变的分类和分割任务。
github 收录
鸭绿江流域与水系 – 世界地理数据大百科辞条
鸭绿江流域是指鸭绿江干流和支流汇水区,地理位置为39°43′57″N-42°17′28″N,123°35′59″E-128°45′50″E。与其接壤的流域分别是辽河流域(东)、松花江流域(北)、图们江流域(北)、大同江流域(西南)等。鸭绿江流域界线在中国境内从长白山天池火山口的南壁起始,向西南经长白山脉、转向西南至千山山脉的北部,再折向南入海;在朝鲜境内,鸭绿江流域从长白山天池南坡启始向东南经过摩天岭山脉,在头流山(2309 m)转向西南方向的赴战岭山脉,在英雄里附近转向西,经狼林山(2184 m)、广城、松源,转向西南方向的狄逾岭山脉,接江南山脉的南部后至鸭绿江河口。鸭绿江流域面积65215.49 km²,其中,中国境内面积32799.22 km²,朝鲜境内面积32416.27 km²。鸭绿江是中(国)朝(鲜)界河,它起源于长白山天池火山口的南壁,向南经惠山(朝)、折向西经临江(中)、再转向西南直向丹东(中)、新义州(朝),最后在东港(中)和多狮里(朝)附近注入黄海的西朝鲜湾。鸭绿江干流长844.98 km,有几条比较大的支流汇入,包括在朝鲜境内的虛川江、長津江、厚州川、慈城江、禿魯江、忠满江和三桥川;在中国境内的浑江、蒲石河、瑗河等。鸭绿江干流沿中朝国界线自东北向西南流经吉林省的长白朝鲜族自治县、临江市、集安市;辽宁省的桓仁满族自治县、宽甸满族自治县、丹东市和东港市;朝鲜的两江道、慈江道和平安北道。鸭绿江流域地处暖温带湿润季风气候区。年降水量800-1200 mm。流域内多山,最高海拔2745 m,河道比降比较大,达到0.0032,其中在中段可达到0.01。丰富的降水补给和较大的河床比降,使得鸭绿江流域成为亚洲单位面积水资源和水利资源最丰富的流域之一。近80年来,流域内先后建造了水丰水库(中、朝)、渭源水库(中、朝)、铁甲水库(中)、太平哨水库(中)、桓仁水库(中)、回龙山水库(中)、满丰湖水库(朝)、版平里水库(朝)、时中湖水库(朝)、狼林湖水库(朝)、长津湖水库(朝)、赴战湖水库(朝)、丰西湖水库等(朝)。数据文件包括鸭绿江干流、鸭绿江水系和鸭绿江流域地理信息系统数据文件组成。数据集以.kmz 和.shp格式存储,数据量43.8 MB(压缩为20.1 MB)。
国家对地观测科学数据中心 收录
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.
DataCite Commons 收录
LUNA16
LUNA16(肺结节分析)数据集是用于肺分割的数据集。它由 1,186 个肺结节组成,在 888 次 CT 扫描中进行了注释。
OpenDataLab 收录
Chinese Tea Sprout Dataset
On the basis of autonomous mobile tea picking robot, aiming at the shortcomings of traditional tea bud identification methods such as slow speed, low accuracy and poor adaptability, as well as people's demand for high-quality tea, the research and experiment of tea bud quality classification recognition based on YOLOv5 were carried out. Through the construction of the autonomous mobile tea picking robot visual recognition system, the data set was constructed, which mainly included tea image acquisition, enhancement and annotation. YOLOv5 and SSD target detection algorithms were used to conduct model training experiments, and the experimental data was analyzed. The experimental results show that the average accuracy of YOLOv5 target detection algorithm is high.The analysis of experimental data shows that the YOLOv5 target detection algorithm has a good effect on classification identification of tea buds, which can provide technical support and theoretical guidance for classification identification of tea buds and intelligent picking.
Mendeley Data 收录