185 citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- University of Electronic Science and Technology of ChinaCN23 papers
- Sichuan UniversityCN18 papers
- University of Hong KongHK11 papers
- London School of Economics and Political ScienceGB9 papers
- Southwest Jiaotong UniversityCN9 papers
- University of GroningenNL8 papers
- Hong Kong Polytechnic UniversityHK6 papers
- The University of MelbourneAU6 papers
- University of PittsburghUS6 papers
- Chengdu UniversityCN5 papers
- Chinese Academy of SciencesCN5 papers
- Hong Kong University of Science and TechnologyHK5 papers
17 papers · 1 filter
Principal component analysis for second-order stationary vector time series
Jinyuan Chang, Bin Guo, Qiwei Yao
We extend the principal component analysis (PCA) to second-order stationary vector time series in the sense that we seek for a contemporaneous linear transformation for a -varia…
Stationary patterns and their selection mechanism of Urban crime models with heterogeneous near-repeat victimization effect
Yu Gu, Qi Wang, Guangzeng Yi
In this paper, we study two PDEs that generalize the urban crime model proposed by Short \emph{et al}. [Math. Models Methods Appl. Sci., 18 (2008), pp. 1249-1267]. Our modification…
Double-bootstrap methods that use a single double-bootstrap simulation
Jinyuan Chang, Peter Hall
We show that, when the double bootstrap is used to improve performance of bootstrap methods for bias correction, techniques based on using a single double-bootstrap sample for each…
Periodic Solutions for -Body-Type Problems
Fengying Li, Shiqing Zhang
We consider non-autonomous -body-type problems with strong force type potentials at the origin and sub-quadratic growth at infinity, and using Ljusternik-Schnirelmann theory, we…
The 2-adic valuations of differences of Stirling numbers of the second kind
Wei Zhao, Jianrong Zhao, Shaofang Hong
Let and be positive integers. Let be the 2-adic valuation of . By we denote the Stirling numbers of the second kind. In this paper, we first esta…
The Discrete Sell or Hold Problem with Constraints on Asset Values
Ye Du
The discrete sell or hold problem (DSHP), which is introduced in \cite{H12}, is studied under the constraint that each asset can only take a constant number of different values. We…
Existence and stability of nonconstant positive steady states of morphogenesis models
Haohao Chen, Bo Tong, Qi Wang
In this paper, We study an one--dimensional morphogenesis model considered by C. Stinner et al. in (Math. Meth. Appl. Sci. 2012,35 (445-465). Under homogeneous boundary conditions,…
A Factor-Adjusted Multiple Testing Procedure with Application to Mutual Fund Selection
Wei Lan, Lilun Du
In this article, we propose a factor-adjusted multiple testing (FAT) procedure based on factor-adjusted p-values in a linear factor model involving some observable and unobservable…
Pattern formation in a Keller-Segel chemotaxis model with logistic growth
Ling Jin, Qi Wang, Zengyan Zhang
In this paper we investigate pattern formation in Keller--Segel chemotaxis models over a multi--dimensional bounded domain subject to homogeneous Neumann boundary conditions. It is…
Cramér-type moderate deviations for Studentized two-sample -statistics with applications
Jinyuan Chang, Qi-Man Shao, Wen-Xin Zhou
Two-sample -statistics are widely used in a broad range of applications, including those in the fields of biostatistics and econometrics. In this paper, we establish sharp Cramé…
Global existence and steady states of a two competing species Keller-Segel chemotaxis model
Jia Hu, Qi Wang, Jingyue Yang +1
We study an one{dimensional quasilinear system proposed by J. Tello and M. Winkler [19] which models the population dynamics of two competing species attracted by the same chemical…
Multiplicative Iteration for Nonnegative Quadratic Programming
Xiao Xiao, Donghui Chen
In many applications, it makes sense to solve the least square problems with nonnegative constraints. In this article, we present a new multiplicative iteration that monotonically…
"Plug-and-Play" Edge-Preserving Regularization
Donghui Chen, Misha E. Kilmer, Per Christian Hansen
In many inverse problems it is essential to use regularization methods that preserve edges in the reconstructions, and many reconstruction models have been developed for this task,…
Simulation-Based Hypothesis Testing of High Dimensional Means Under Covariance Heterogeneity
Jinyuan Chang, Chao Zheng, Wen-Xin Zhou +1
In this paper, we study the problem of testing the mean vectors of high dimensional data in both one-sample and two-sample cases. The proposed testing procedures employ maximum-typ…
Some Uniform Estimates and Large-Time Behavior for One-Dimensional Compressible Navier-Stokes System in Unbounded Domains with Large Data
Jing Li, Zhilei Liang
This paper is concerned with the large-time behavior of solutions to the initial and initial boundary value problems with large initial data for the compressible Navier-Stokes syst…
Some Applications of Generalized Mountain Pass Lemma
Fengying Li, Bingyu Li, Shiqing Zhang
The Ghoussoub-Preiss's generalized Mountain Pass Lemma with Cerami-Palais-Smale type condition is a generalization of classical MPL of Ambrosetti-Rabinowitz, we apply it to study t…
Qualitative analysis of a Lotka-Volterra competition system with advection
Chunyi Gai, Qi Wang, Jingda Yan
We study a diffusive Lotka-Volterra competition system with advection under Neumann boundary conditions. Our system models a competition relationship that one species escape from t…