نتایج جستجو برای: shrinkage curve

تعداد نتایج: 141306  

2016
Uwe Schindler Frank Eulenstein Douglas D. Archbold

Besides nutrient composition, the hydraulic performance of horticultural substrates is a main issue for evaluating their quality for horticultural purposes. Their water and air capacity and their suitability for transporting water are important hydraulic quality indicators. Shrinkage and water repellency could have a negative impact on storing and transporting water and solutes. The commonly us...

Journal: :Journal of the Royal Statistical Society. Series B, Statistical methodology 2006
Jeffrey S Morris Raymond J Carroll

Increasingly, scientific studies yield functional data, in which the ideal units of observation are curves and the observed data consist of sets of curves that are sampled on a fine grid. We present new methodology that generalizes the linear mixed model to the functional mixed model framework, with model fitting done by using a Bayesian wavelet-based approach. This method is flexible, allowing...

Journal: :Journal of dentistry 2007
Kusai Baroudi Abeer M Saleh Nick Silikas David C Watts

OBJECTIVES To evaluate the shrinkage-strain, degree of conversion (DC) and percent filler of a range of flowable resin-composites. METHODS Several commercially available flowable resin-composites were selected. The bonded-disk technique was used to measure shrinkage-strain kinetics. Measurements were obtained continuously for 60min by irradiation for 40s at 750mW/cm(2) at two initial temperat...

Journal: :The Journal of Cell Biology 2003
Koei Shinzawa Yoshihide Tsujimoto

Apoptosis is defined on the basis of morphological changes like nuclear fragmentation and chromatin condensation, which are dependent on caspases. Many forms of caspase-independent cell death have been reported, but the mechanisms are still poorly understood. We found that hypoxic cell death was independent of caspases and was associated with significant nuclear shrinkage. Neither Bcl-2 nor Apa...

Journal: :Communications in Statistics - Simulation and Computation 2008
Ilya Lavrik Yoon Young Jung Fabrizio Ruggeri Brani Vidakovic

Statistical inference in the wavelet domain remains vibrant area of contemporary statistical research because desirable properties of wavelet representations and the need of scientific community to process, explore, and summarize massive data sets. Prime examples are biomedical, geophysical, and internet related data. In this paper we develop wavelet shrinkage methodology based on testing multi...

2014
F Bastos Gonçalves H Baderkhan H J M Verhagen A Wanhainen M Björck R J Stolker S E Hoeks K Mani

BACKGROUND Aneurysm shrinkage has been proposed as a marker of successful endovascular aneurysm repair (EVAR). Patients with early postoperative shrinkage may experience fewer subsequent complications, and consequently require less intensive surveillance. METHODS Patients undergoing EVAR from 2000 to 2011 at three vascular centres (in 2 countries), who had two imaging examinations (postoperat...

Shrinkage preliminary test estimation in exponential distribution under a precautionary loss function is considered. The minimum risk-unbiased estimator is derived and some shrinkage preliminary test estimators are proposed. We apply our results on censored data and records. The relative efficiencies of proposed estimators with respect to the minimum ‎risk-unbiased‎&...

Journal: :CoRR 2018
Daniel F. Schmidt Enes Makalic

Global-local shrinkage hierarchies are an important, recent innovation in Bayesian estimation of regression models. In this paper we propose to use log-scale distributions as a basis for generating familes of flexible prior distributions for the local shrinkage hyperparameters within such hierarchies. An important property of the log-scale priors is that by varying the scale parameter one may v...

Journal: :Advances in Materials Science and Engineering 2022

A model of investment casting a titanium alloy gearbox based on the ProCAST software was established in this work, and simulated result used to optimize process. The flow temperature field were an actual pouring Casting defects solidification process analyzed. results show that can be predicted by simulation exactly, is accordance with Shrinkage porosity are observably alleviated remodelling mo...

Journal: :E3S web of conferences 2023

In this paper, we improved the efficiency of parameter estimation in partially linear models, where subspace information is available. We proposed shrinkage and pretest strategies. The asymptotic distributional risk estimators was examined. also conducted a Monte Carlo simulation to evaluate performance estimators. performed better than unrestricted estimator. A real data example used illustrat...

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