Near-infrared (NIR) spectroscopy is a widely used technique for determining the composition of textile fibers. This paper analyzes possibility using low-cost portable NIR sensors based on InGaAs PIN photodiode array detectors to acquire spectra samples. The are then processed by applying sequential application multivariate statistical methods (principal component analysis, canonical variate and...

q-mode hierarchical cluster (hca) and principal component analysis (pca) were simultaneously applied to groundwater hydrochemical data from the three times in 2004: june, september, and december, along the ain azel aquifer, algeria, to extract principal factors corresponding to the different sources of variation in the hydrochemistry, with the objective of defining the main controls on the h...

I. Introduction: Multivariate Statistical Analyses comprise a number of statistical methods/tools that may be applied to several fields of empirical investigations. Most of these methods have three characteristics in common: (i) they presume availability of data set, say Z(nxk) (in n observations and k variables; k ≥ 2, n>k), collected from the field (observationally or experimentally); (ii) th...