#### Filter Results:

#### Publication Year

2009

2016

#### Publication Type

#### Co-author

#### Publication Venue

#### Key Phrases

Learn More

- Wei Wu, Han Xiao, +11 authors John Y-J Shyy
- Circulation
- 2011

BACKGROUND
Upregulated by atheroprotective flow, the transcription factor Krüppel-like factor 2 (KLF2) is crucial for maintaining endothelial function. MicroRNAs (miRNAs) are noncoding small RNAs that regulate gene expression at the posttranscriptional level. We examined the role of miRNAs, particularly miR-92a, in the atheroprotective flow-regulated KLF2.… (More)

SUMMARY In this paper, we present a numerical algorithm based on group theory and numerical optimization to compute efficient quadrature rules for integration of bivariate polynomials over arbitrary polygons. These quadratures have desirable properties such as positivity of weights and interiority of nodes and can readily be used as software libraries where… (More)

- Han Xiao, Wei Biao Wu
- 2011

The paper presents a systematic theory for asymptotic inference of autocovariances of stationary processes. We consider nonparametric tests for serial correlations based on the maximum (or L ∞) and the quadratic (or L 2) deviations. For these two cases, with proper centering and rescaling, the asymptotic distributions of the deviations are Gumbel and… (More)

- Mathias Drton, Han Xiao
- 2009

We consider small factor analysis models with one or two factors. Fixing the number of factors, we prove a finiteness result about the covariance matrix parameter space when the size of the covariance matrix increases. According to this result, there exists a distinguished matrix size starting at which one can determine whether a given covariance matrix… (More)

We establish Nagaev and Rosenthal-type inequalities for dependent random variables. The imposed dependence conditions, which are expressed in terms of functional dependence measures, are directly related to the physical mechanisms of the underlying processes and are easy to work with. Our results are applied to nonlinear time series and kernel density… (More)

- Efstathios Paparoditis, Dimitris N. Politis, Tim McMurry, Han Xiao, Wei Biao Wu
- 2011

Traditional kernel spectral density estimators are linear as a function of the sample autocovariance sequence. The purpose of the present paper is to propose and analyze two new spectral estimation methods that are based on the sample autocovariances in a nonlinear way. The rate of convergence of the new estimators is quantified, and practical issues such… (More)

- Mathias Drton, Han Xiao, H. XIAO
- 2010

Conditional independence in a multivariate normal (or Gaussian) distribution is characterized by the vanishing of subdeterminants of the distri-bution's covariance matrix. Gaussian conditional independence models thus correspond to algebraic subsets of the cone of positive definite matrices. For statistical inference in such models it is important to know… (More)

- Han Xiao, Wei Biao Wu
- IEEE Transactions on Information Theory
- 2011

We propose a single-pass algorithm for estimating spectral densities of stationary processes. Our algorithm is computationally fast in the sense that, when a new observation arrives, it can provide a real-time update within <i>O</i>(1) computation. The proposed algorithm is probabilistically fast in that, for stationary processes whose auto-covariances… (More)

- HAN XIAO
- 2011

We consider the maximum deviations of the sample covariances under the contexts of high dimensional data analysis and time series analysis. In the large n (number of observations) and large m (data dimension) paradigm, we show that the maximum deviation of the sample covariances converges in distribution to the extreme value distribution of type I. The… (More)

- Fenqing Shang, Jiao Zhang, +10 authors Ting Lei
- PloS one
- 2016

Hyperglycemia and hypertension impair endothelial function in part through oxidative stress-activated poly (ADP-ribose) polymerase 1 (PARP1). Biguanides and angiotensin II receptor blockers (ARBs) such as metformin and telmisartan have a vascular protective effect. We used cultured vascular endothelial cells (ECs), diabetic and hypertensive rodent models,… (More)

- ‹
- 1
- ›