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浏览/检索结果: 共4条，第1-4条 帮助 限定条件 发表日期：2015    专题：北京大学    第一署名单位    第一作者单位    通讯作者单位     已选(0)清除 条数/页：5101520253035404550556065707580859095100   排序方式：请选择作者升序作者降序题名升序题名降序发表日期升序发表日期降序提交时间升序提交时间降序 Assessing Beijing's PM2.5 pollution: severity, weather impact, APEC and winter heating 其他 2015-01-01 Liang, Xuan; Zou, Tao; Guo, Bin; Li, Shuo; Zhang, Haozhe; Zhang, Shuyi; Huang, Hui; Chen, Song Xi 收藏  |  浏览/下载：4/0  |  提交时间：2017/12/03 air quality  meteorological condition  observational study  quasi-experiment  FINE PARTICULATE MATTER  AIR-POLLUTION  ADDITIVE-MODELS  JANUARY 2013  CHINA  SENSITIVITY  VARIABLES  HEALTH   High dimensional generalized empirical likelihood for moment restrictions with dependent data 其他 2015-01-01 Chang, Jinyuan; Chen, Song Xi; Chen, Xiaohong 收藏  |  浏览/下载：7/0  |  提交时间：2015/11/11 Generalized empirical likelihood  High dimensionality  Penalized likelihood  Variable selection  Over-identification test  Weak dependence  CENTRAL-LIMIT-THEOREM  ESTIMATING EQUATIONS  VARIABLE SELECTION  SAMPLE PROPERTIES  MODELS  ESTIMATORS  GMM  CONVERGENCE  BOOTSTRAP   Bandwidth Selection for High-Dimensional Covariance Matrix Estimation 其他 2015-01-01 Qiu, Yumou; Chen, Song Xi 收藏  |  浏览/下载：4/0  |  提交时间：2017/12/03 Banding estimator  Large p, small n  Ratio-consistency  Tapering estimator  Thresholding estimator  LARGEST EIGENVALUE  SONAR TARGETS  REGULARIZATION  NETWORK   Association Between Size-segregated Particles in Ambient Air and Cardio-Respiratory Health Endpoints in People with Normal and Impaired Blood Glucose 其他 2015-01-01 Yiqun Han; Xiyue Zhanghan; Ran Li; Tianning Xie; You Wu; Ruoyu Wang; Weiju Li; Guanghua Zhou; Hongyin Zhang; Ton.q Zhu; other SCOPE Team members; Yanwen Wang; Xi Chen; Junxia Wang; Yanhua Fang; Min Hu; Ziqiang Tan; Qi Wang; Wu Chen 收藏  |  浏览/下载：5/0  |  提交时间：2017/12/03