نتایج جستجو برای: gls method

تعداد نتایج: 1631477  

2016
Ju-Hua Liu Yan Chen Michele Yuen Zhe Zhen Carmen Wing-Sze Chan Karen Siu-Ling Lam Hung-Fat Tse Kai-Hang Yiu

BACKGROUND Patients with type 2 diabetes mellitus (T2DM) are at high risk for cardiovascular events. The aim of the study was to assess whether global longitudinal strain (GLS) provides prognostic value in these patients. METHODS A total of 247 T2DM patients without history of cardiovascular complications and participated in the CDATS study were prospectively enrolled. Left ventricular (LV) s...

2000
Christopher F. Baum

sts15 Tests for stationarity of a time series Christopher F. Baum, Boston College, [email protected] Abstract: Implements the Elliott–Rothenberg–Stock (1996) DF-GLS test and the Kwiatkowski–Phillips–Schmidt–Shin (1992) KPSS tests for stationarity of a time series. The DF-GLS test is an improved version of the augmented Dickey–Fuller test. The KPSS test has a null hypothesis of stationarity and may be...

2001
Yixiao Sun Peter C. B. Phillips

This paper examines the efficiency gains of GLS detrending over OLS detrending in the model yt = z′ tγ + ut, where z ′ t = (1, t, ..., t k−1) and ut ∼ I(d), −1/2 < d < 3/2. A famous theorem on trend removal by OLS regression (usually attributed to Grenander and Rosenblatt (1957) gave conditions for the asymptotic equivalence of GLS and OLS in deterministic trend estimation with I(0) errors. Whe...

2015
Yuanyuan Zhang Baohua Li Dongxin Huai Yongming Zhou Daniel J. Kliebenstein

The evolution of plant metabolic diversity is largely driven by gene duplication and ensuing sub-functionalization and/or neo-functionalization to generate new enzymatic activities. However, it is not clear whether the transcription factors (TFs) regulating these new enzyme encoding genes were required to co-evolve with these genes in a similar fashion or if these new genes can be captured by e...

2015
Yongle Chen Zhiqi Zhang Leilei Cheng Li Fan Chunsheng Wang Xianhong Shu Yaoliang Tang

Aortic stenosis (AS) and aortic incompetence (AI) are common aortic valve diseases. Both may deteriorate into irreversible myocardial dysfunction and will increase the risk of sudden death. In this study, we aimed to investigate the early variation trend of left ventricular function by three-dimensional speckle tracking echocardiography (3D-STE) in the patients who underwent cardiac surgeries f...

2008
Peter J. Balint-Kurti Randall Wisser John C. Zwonitzer

Gray leaf spot [GLS, causal agent Cercospora zeae-maydis (Tehon and E. Y. Daniels)] is an important fungal disease of maize in the U.S. and worldwide. The IBM population, an advanced intercross recombinant inbred line population derived from a cross between the maize lines Mo17 (resistant) and B73 (susceptible), was evaluated in three environments (Andrews, NC in 2005, 2006, and 2007) for resis...

Journal: :Circulation. Cardiovascular imaging 2014
Kenya Kusunose Andrew Goodman Roosha Parikh Tyler Barr Shikhar Agarwal Zoran B Popovic Richard A Grimm Brian P Griffin Milind Y Desai

BACKGROUND We sought to assess the utility of left ventricular global longitudinal strain (LV-GLS) in predicting mortality in moderate to severe and paradoxical severe aortic stenosis (AS) patients with preserved ejection fraction. METHODS AND RESULTS We studied 395 AS patients (70 ± 14 years, 57% men) with aortic valve area <1.3 cm(2) evaluated between January to June 2008 (excluding severe ...

Journal: :European heart journal cardiovascular Imaging 2012
L G Kearney K Lu M Ord S K Patel K Profitis G Matalanis L M Burrell P M Srivastava

AIMS To assess the capacity of global longitudinal strain (GLS) in patients with aortic stenosis (AS) to (i) detect the subclinical left ventricular (LV) dysfunction [LV ejection fraction (LVEF) ≥50% patients]; (ii) predict all-cause mortality and major adverse cardiac events (MACE) (all patients), and (iii) provide incremental prognostic information over current risk markers. METHODS AND RES...

Journal: :Circulation. Cardiovascular imaging 2012
Jordi S Dahl Lars Videbæk Mikael K Poulsen Torsten R Rudbæk Patricia A Pellikka Jacob E Møller

BACKGROUND Global longitudinal systolic strain (GLS) is often reduced in aortic stenosis despite normal ejection fraction. The importance of reduced preoperative GLS on long-term outcome after aortic valve replacement is unknown. METHODS AND RESULTS A total of 125 patients with severe aortic stenosis and ejection fraction >40% scheduled for aortic valve replacement were evaluated preoperative...

2016
Nikol Voutsina Adrienne C. Payne Robert D. Hancock Graham J. J. Clarkson Steve D. Rothwell Mark A. Chapman Gail Taylor James Hutton Graham Clarkson

Background Consuming watercress is thought to provide health benefits as a consequence of its phytonutrient composition. However, for watercress there are currently limited genetic resources underpinning breeding efforts for either yield or phytonutritional traits. In this paper, we use RNASeq data from twelve watercress accessions to characterize the transcriptome, perform candidate gene minin...

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