Using PCA to characterize and differentiate loess deposits in Wisconsin and Upper Michigan, USA

Factor space differentiation of brick clays according to mineral content: Prediction of final brick product quality

“…In this research, principal component analysis (PCA) is used to decompose the original data matrix into several products of multiplication, loading (different brick clay samples) and score (different mineral content) matrices. Thus, the raw materials are divided into 4 groups according to similarity concerning mineral content (Scull and Schaetzl, 2011). Further, for every quadrant in PCA score plot, a separate SOP model is developed, in order to obtain highly precise prediction of characteristics of fired laboratory products.…”

Precision of Soil Particle Size Analysis using Laser Diffractometry

“…Like a relative frequency histogram, the ranges of the categories (bins) can be adjusted to increase or decrease the resolution of the results, for example, the traditional five sand category "splits" (cf, Scull and Schaetzl, 2011 ). Like a relative frequency histogram, the ranges of the categories (bins) can be adjusted to increase or decrease the resolution of the results, for example, the traditional five sand category "splits" (cf, Scull and Schaetzl, 2011 ).…”

Selected highlights in American soil science history from the 1980s to the mid-2010s

“…When detailed geologic maps became available, Lindholm (1993Lindholm ( , 1994a found that his soil-based geologic maps were accurate. NCSS soil maps have also been used to improve geomorphologic mapping (Lindholm, 1994b;Brevik and Fenton, 1999), determine ice-edge positions in glaciated areas (Schaetzl, 2001;Millar, 2004), study loess deposits (Schaetzl and Weisenborn, 2004;Scull and Schaetzl, 2011;Luehmann et al, 2013), and map glacial deposits (Miller et al, 2008;Oehlke and Dolliver, 2011). Recently there have been some studies that attempted to quantify the relationships between NCSS soil maps and geology maps (Evans, 2002;Oehlke and Dolliver, 2011;Miller and Burras, 2015).…”