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Different behaviors in natural gas production between national and private oil companies: Economics-driven or environment-driven? 期刊论文
ENERGY POLICY, 2018, 114: 145-152
作者:  Gong, Binlei
收藏  |  浏览/下载：1/0  |  提交时间：2019/04/09
Oil and gas companies  Efficiency analysis  Stochastic frontier  Natural gas ratio  Ownership structure  
Modelling conifer crown profiles as nonlinear conditional quantiles: An example with planted Korean pine in northeast China 期刊论文
FOREST ECOLOGY AND MANAGEMENT, 2017, 398
作者:  Gao, Huilin;  Bi, Huiquan;  Li, Fengri
收藏  |  浏览/下载：7/0  |  提交时间：2019/04/09
Pinus koraiensis  Outer crown profile  Nonlinear quantile regression  Jackknife model averaging  Quantile selection