Yuanfu Xie
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View article: Association between serum γ-Glutamyltransferase and the risk of cervical cancer: Evidence from the national health and nutrition examination survey
Association between serum γ-Glutamyltransferase and the risk of cervical cancer: Evidence from the national health and nutrition examination survey Open
Background The principal cause of cervical cancer is sustained high-risk human papillomavirus (HPV) infection. However, some cases remain unrelated to HPV infections. Current HPV screening methods have difficulties identifying HPV-negative…
View article: MYB30 Regulates Submergence Tolerance by Repressing Ethylene Biosynthesis via ACS7 in <i>Arabidopsis</i>
MYB30 Regulates Submergence Tolerance by Repressing Ethylene Biosynthesis via ACS7 in <i>Arabidopsis</i> Open
Floods impose detrimental effects on natural and agro-ecosystems, leading to a significant loss of worldwide crop production. Global climate change has even worsened this situation. Flooding is a continuous process including two stages of …
View article: Combining vLAPS and Nudging Data Assimilation
Combining vLAPS and Nudging Data Assimilation Open
The combination of techniques that incorporate observational data may improve numerical weather prediction forecasts; thus, in this study, the methodology and potential value of one such combination were investigated. A series of experimen…
View article: A Z-grid Based Dynamic Core for Global Numerical Prediction Model of Chinese Meteorological Agency
A Z-grid Based Dynamic Core for Global Numerical Prediction Model of Chinese Meteorological Agency Open
<p>In order to provide multiple choices of dynamic cores for the next generation global numerical prediction system at Chinese Meteorological Administration (CMA), a Z-grid based dynamic core is under development. Among other importa…
View article: Generalized Z-Grid Model for Numerical Weather Prediction
Generalized Z-Grid Model for Numerical Weather Prediction Open
Z-grid finite volume models conserve all-scalar quantities as well as energy and potential enstrophy and yield better dispersion relations for shallow water equations than other finite volume models, such as C-grid and C-D grid models; how…
View article: Ensemble transform sensitivity for adaptive observations: a general formulation and its practicable implementation
Ensemble transform sensitivity for adaptive observations: a general formulation and its practicable implementation Open
The Ensemble Transformation (ET) method and its variation ET-based Sensitivity (ETS) method have been used in adaptive observation studies. However, the solution of the ensemble transformation matrix in the ET and ETS methods is not unique…
View article: Nonlinear Least Squares En4DVar to 4DEnVar Methods for Data Assimilation: Formulation, Analysis, and Preliminary Evaluation
Nonlinear Least Squares En4DVar to 4DEnVar Methods for Data Assimilation: Formulation, Analysis, and Preliminary Evaluation Open
The En4DVar method is designed to combine the flow-dependent statistical covariance information of EnKF into the traditional 4DVar method. However, the En4DVar method is still hampered by its strong dependence on the adjoint model of the u…
View article: A Potential Density Gradient Dependent Analysis Scheme for Ocean Multiscale Data Assimilation
A Potential Density Gradient Dependent Analysis Scheme for Ocean Multiscale Data Assimilation Open
This study addresses how to maintain oceanic mixing along potential density surface in ocean data assimilation (ODA). It is well known that the oceanic mixing across the potential density surface is much weaker than that along the potentia…
View article: Nonparametric Regression Estimation with Mixed Measurement Errors
Nonparametric Regression Estimation with Mixed Measurement Errors Open
We consider the estimation of nonparametric regression models with predictors being measured with a mixture of Berkson and classical errors. In practice, the Berkson error arises when the variable X of interest is unobservable and only a p…
View article: Reconstruction of Typhoon Structure Using 3-Dimensional Doppler Radar Radial Velocity Data with the Multigrid Analysis: A Case Study in an Idealized Simulation Context
Reconstruction of Typhoon Structure Using 3-Dimensional Doppler Radar Radial Velocity Data with the Multigrid Analysis: A Case Study in an Idealized Simulation Context Open
Extracting multiple-scale observational information is critical for accurately reconstructing the structure of mesoscale circulation systems such as typhoon. The Space and Time Mesoscale Analysis System (STMAS) with multigrid data assimila…
View article: Sensitivity of the Summer Precipitation Simulated with WRF Model to Planetary Boundary Layer Parameterization over the Tibetan Plateau and its Downstream Areas
Sensitivity of the Summer Precipitation Simulated with WRF Model to Planetary Boundary Layer Parameterization over the Tibetan Plateau and its Downstream Areas Open
This study examines the sensitivity of simulated precipitation to planetary boundary layer (PBL) schemes over the Tibetan Plateau (TP) and the Yangtze River Valley (YRV). The summer precipitation from 15 June to 30 July 2010 is simulated w…