Q
Qu Cheng
Researcher at University of California, Berkeley
Publications - 29
Citations - 2089
Qu Cheng is an academic researcher from University of California, Berkeley. The author has contributed to research in topics: Disease surveillance & Population. The author has an hindex of 11, co-authored 25 publications receiving 1557 citations. Previous affiliations of Qu Cheng include Institute of High Performance Computing Singapore & University of California.
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Journal ArticleDOI
Finer resolution observation and monitoring of global land cover: first mapping results with Landsat TM and ETM+ data
Peng Gong,Jie Wang,Le Yu,Yongchao Zhao,Yuanyuan Zhao,Lu Liang,Zhenguo Niu,Xiaomeng Huang,Haohuan Fu,Shuang Liu,Congcong Li,Xueyan Li,Wei Fu,Caixia Liu,Yue Xu,Xiaoyi Wang,Qu Cheng,Luanyun Hu,Wenbo Yao,Han Zhang,Peng Zhu,Ziying Zhao,Haiying Zhang,Yaomin Zheng,Luyan Ji,Yawen Zhang,Han Chen,An Yan,JianHong Guo,Liang Yu,Lei Wang,Xiaojun Liu,Tingting Shi,Menghua Zhu,Yanlei Chen,Guangwen Yang,Ping Tang,Bing Xu,Chandra Giri,Nicholas Clinton,Zhiliang Zhu,Jin Chen,Jun Chen +42 more
TL;DR: In this article, the first 30 m resolution global land cover maps using Landsat Thematic Mapper TM and enhanced thematic mapper plus ETM+ data were produced. And the authors used four classifiers that were freely available were employed, including the conventional maximum likelihood classifier MLC, J4.8 decision tree classifier, Random Forest RF classifier and support vector machine SVM classifier.
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Towards a common validation sample set for global land-cover mapping
Yuanyuan Zhao,Peng Gong,Le Yu,Luanyun Hu,Xueyan Li,Congcong Li,Haiying Zhang,Yaomin Zheng,Jie Wang,Yongchao Zhao,Qu Cheng,Caixia Liu,Shuang Liu,Xiaoyi Wang +13 more
TL;DR: A global validation data-set based on interpreting Landsat Thematic Mapper and Enhanced TM Plus images for a total of 38,664 sample units pre-determined with an equal-area stratified sampling scheme, which indicates some of the homogeneous sample units in the data- set have already been used in assessing other classification results or as training data for land-cover mapping with coarser-resolution data.
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The Tsinghua– Lancet Commission on Healthy Cities in China: unlocking the power of cities for a healthy China
Jun Yang,José G. Siri,Justin V. Remais,Qu Cheng,Han Zhang,Karen K.Y. Chan,Zhe Sun,Yuanyuan Zhao,Na Cong,Xueyan Li,Wei Zhang,Yuqi Bai,Jun Bi,Wenjia Cai,Emily Ying Yang Chan,Wanqing Chen,Weicheng Fan,Hua Fu,Jianqing He,Hong Huang,John S. Ji,John S. Ji,Peng Jia,Xiaopeng Jiang,Mei Po Kwan,Mei Po Kwan,Tianhong Li,Xiguang Li,Song Liang,Xiaofeng Liang,Lu Liang,Lu Liang,Qiyong Liu,Yongmei Lu,Yong Luo,Xiulian Ma,Bernhard Schwartländer,Zhiyong Shen,Peijun Shi,Jing Su,Tinghai Wu,Changhong Yang,Yongyuan Yin,Qiang Zhang,Yinping Zhang,Yong Zhang,Bing Xu,Peng Gong +47 more
TL;DR: The Tsinghua–Lancet Commission on Healthy Cities in China aimed to characterise, understand, and address urban health challenges in the unique context of China’s rapid and dynamic urban development.
Journal ArticleDOI
Meta-discoveries from a synthesis of satellite-based land-cover mapping research
Le Yu,Lu Liang,Jie Wang,Yuanyuan Zhao,Qu Cheng,Luanyun Hu,Shuang Liu,Liang Yu,Xiaoyi Wang,Peng Zhu,Xueyan Li,Yue Xu,Congcong Li,Wei Fu,Xuecao Li,Wenyu Li,Caixia Liu,Na Cong,Han Zhang,Fangdi Sun,Xinfang Bi,Qinchuan Xin,Dandan Li,Donghui Yan,Zhiliang Zhu,Michael F. Goodchild,Peng Gong +26 more
TL;DR: In this paper, the authors identify the spatial temporal patterns and spatial hotspots of land-cover mapping research around the world and find that there is a significant mismatch between hotspot areas of landcover mapping and areas that are either hard to map or rich in biodiversity.
Journal ArticleDOI
Transport and public health in China: the road to a healthy future
Baoguo Jiang,Song Liang,Zhong-Ren Peng,Zhong-Ren Peng,Haozhe Cong,Morgan C. Levy,Qu Cheng,Tianbing Wang,Justin V. Remais +8 more
TL;DR: Transportation-related risk factors are a major source of morbidity and mortality in China, where the expansion of road networks and surges in personal vehicle ownership are having profound effects on public health.