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浏览/检索结果: 共34条，第1-10条 帮助

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Surrogate space based dimension reduction for nonignorable nonresponse 期刊论文  OAI收割
COMPUTATIONAL STATISTICS & DATA ANALYSIS, 2022, 卷号: 168, 页码: 18
作者:  Deng, Jianqiu;  Yang, Xiaojie;  Wang, Qihua
  |  收藏  |  浏览/下载：67/0  |  提交时间：2022/04/02
Sufficient conditions for existence of global minimizers of functions on Hilbert spaces 期刊论文  OAI收割
JOURNAL OF GLOBAL OPTIMIZATION, 2022, 页码: 11
作者:  Chen, Liang;  Dai, Yu-Hong;  Wei, Zhou
  |  收藏  |  浏览/下载：33/0  |  提交时间：2022/04/02
A Sufficient and Necessary Condition of the Existence of WENO-Like Linear Combination for Finite Difference Schemes 期刊论文  OAI收割
COMMUNICATIONS IN COMPUTATIONAL PHYSICS, 2021, 卷号: 29, 期号: 2, 页码: 534-570
作者:  Kang J(康健);  Li XL(李新亮);  Li XL(李新亮)
  |  收藏  |  浏览/下载：27/0  |  提交时间：2021/03/03
A NEW ADAPTIVE SUBSPACE MINIMIZATION THREE-TERM CONJUGATE GRADIENT ALGORITHM FOR UNCONSTRAINED OPTIMIZATION 期刊论文  OAI收割
JOURNAL OF COMPUTATIONAL MATHEMATICS, 2021, 卷号: 39, 期号: 2, 页码: 159-177
作者:  Zhang, Keke;  Liu, Hongwei;  Liu, Zexian
  |  收藏  |  浏览/下载：34/0  |  提交时间：2021/01/14
On the Terrestrial Gamma Ray Flashes Preceding Narrow Bipolar Events 期刊论文  OAI收割
Geophysical Research Letters, 2021, 卷号: 48, 页码: e92160
作者:  HXMT
  |  收藏  |  浏览/下载：28/0  |  提交时间：2022/02/08
low frequency magnetic sferics  narrow bipolar events (NBEs)  relativistic feedback mechanism  Terrestrial Gamma ray Flashes (TGFs)  Abstract: Narrow bipolar events (NBEs) are occasionally reported to occur within a few ms after Terrestrial Gamma ray Flashes (TGFs), while the formation mechanism remains mysterious partially due to the lack of sufficient observations. Here, nine more TGFs of this scenario are reported with concurrent LF sferics and lightning location data. The gamma ray production in these TGFs preceded the occurrence of NBEs by a minimum of 60 µs up to 13.5 ms, and no other fast leader discharge was found within 20 ms before the TGF. The TGF preceded positive NBEs occurred at altitudes of 8.6-11 km in thunderstorms, likely in the high electric field (E field) region of lightning initiation. The analyses show that the NBE preceding TGFs bear harder energy spectrum with larger proportion of high energy photons than EIP related TGFs produced in association with lightning leader. Our findings support the relativistic feedback mechanism of gamma ray generation in the large scale thunderstorm E field.  
SUFFICIENT DIMENSION REDUCTION UNDER DIMENSION-REDUCTION-BASED IMPUTATION WITH PREDICTORS MISSING AT RANDOM 期刊论文  OAI收割
STATISTICA SINICA, 2019, 卷号: 29, 期号: 4, 页码: 1751-1778
作者:  Yang, Xiaojie;  Wang, Qihua
  |  收藏  |  浏览/下载：79/0  |  提交时间：2020/01/10
A perturbational weighted essentially non-oscillatory scheme 期刊论文  OAI收割
COMPUTERS & FLUIDS, 2018, 卷号: 172, 页码: 196-208
作者:  Ceng FJ(曾方军);  Shen YQ(申义庆);  Liu SP(刘升平)
  |  收藏  |  浏览/下载：24/0  |  提交时间：2018/10/30
A class of model averaging estimators 期刊论文  OAI收割
ECONOMICS LETTERS, 2018, 卷号: 162, 页码: 101-106
作者:  Zhao, Shangwei;  Ullah, Aman;  Zhang, Xinyu
  |  收藏  |  浏览/下载：22/0  |  提交时间：2018/07/30
CHARACTERIZATION OF THE ROBUST ISOLATED CALMNESS FOR A CLASS OF CONIC PROGRAMMING PROBLEMS 期刊论文  OAI收割
SIAM JOURNAL ON OPTIMIZATION, 2017, 卷号: 27, 期号: 1, 页码: 67-90
作者:  Ding, Chao;  Sun, Defeng;  Zhang, Liwei
  |  收藏  |  浏览/下载：30/0  |  提交时间：2018/07/30
Multi-period mean variance portfolio selection under incomplete information 期刊论文  OAI收割
APPLIED STOCHASTIC MODELS IN BUSINESS AND INDUSTRY, 2016, 卷号: 32, 期号: 6, 页码: 753-774
作者:  Zhang, Ling;  Li, Zhongfei;  Xu, Yunhui;  Li, Yongwu
  |  收藏  |  浏览/下载：33/0  |  提交时间：2018/07/30