Now showing items 11-20 of 11466
Validation of a sampling plan to generate food composition data
A methodology to develop systematic plans for food sampling was proposed. Long life whole and skimmed milk, and sunflower oil were selected to validate the methodology in Argentina. Fatty acid profile in all foods, proximal ...
A new modeling strategy for third-order fast high-performance liquid chromatographic data with fluorescence detection: Quantitation of fluoroquinolones in water samples
(Springer Heidelberg, 2015-02)
Matrix augmentation is regularly employed in extended multivariate curve resolution-alternating least-squares (MCR-ALS), as applied to analytical calibration based on second- and third-order data. However, this highly ...
Criticality of mostly informative samples: A Bayesian model selection approach
(IOP Publishing, 2015-10)
We discuss a Bayesian model selection approach to high-dimensional data in the deep under-sampling regime. The data is based on a representation of the possible discrete states s, as defined by the observer, and it consists ...
Sampling precision and variability of tree species abundance ranks in a semideciduous Atlantic forest fragment
(Akademiai Kiado RtBudapestHungria, 2011)
Missing data mechanisms and their implications on the analysis of categorical data
We review some issues related to the implications of different missing data mechanisms on statistical inference for contingency tables and consider simulation studies to compare the results obtained under such models to ...
Extraction of building roof planes with stratified random sample consensus
This paper describes a consensus-set estimation for building roof-plane detection using a stratified random sample consensus (sRANSAC) algorithm applied to point clouds acquired by laser scanning systems. The main idea is ...
The Endothelial Sample Size Analysis in Corneal Specular Microscopy Clinical Examinations
(LIPPINCOTT WILLIAMS & WILKINSPHILADELPHIA, 2012)
Purpose: To evaluate endothelial cell sample size and statistical error in corneal specular microscopy (CSM) examinations. Methods: One hundred twenty examinations were conducted with 4 types of corneal specular microscopes: ...
Comparative studies of the sample decomposition of green and roasted coffee for determination of nutrients and data exploratory analysis
The contents of some nutrients in 35 Brazilian green and roasted coffee samples were determined by flame atomic absorption spectrometry (Ca, Mg, Fe, Cu, Mn, and Zn), flame atomic emission photometry (Na and K) and Kjeldahl ...
Economic design of Shewhart control charts for monitoring autocorrelated data with skip sampling strategies
(Elsevier B.V., 2014-05-01)
On-line monitoring of process variability is strategic to achieve high standards of quality and maintain at acceptable levels the number of nonconforming items. Shewhart control charts are the simplest Statistical Process ...
Towards a universal sampling protocol for soil biotas in the humid tropics.
(Pesquisa Agropecuária Brasileira, Brasília, DF, v. 44, n. 8, p.825-834, ago. 2009., 2014)