Results 71 to 80 of about 45,228 (298)
Grassland Research, EarlyView.Plant species richness was greater in summer in both alpine and subalpine grassland ecosystems. Soil moisture demonstrates significant positive correlations with soil organic carbon and total nitrogen across seasonal periods. Microbial α‐diversity peaks during summer but maintains functional stability across seasons.
Huma Ali +4 more
wiley +1 more source
Correspondence Analysis in R, with Two- and Three-dimensional Graphics: The ca Package
Journal of Statistical Software, 2007 We describe an implementation of simple, multiple and joint correspondence analysis in R. The resulting package comprises two parts, one for simple correspondence analysis and one for multiple and joint correspondence analysis.
Oleg Nenadic, Michael Greenacre
doaj
Ciência Rural, 2012 A seleção e recomendação de genótipos superiores são dificultadas devido à ocorrência da interação genótipo e ambiente. Nesse contexto, as análises biplot têm sido cada vez mais utilizadas na análise de dados agronômicos, com interações de natureza ...
Raphael Rossi Silva, Giovani Benin
doaj +1 more source
Interactive Biplot Construction [PDF]
We analyze and discuss how a generic software to produce biplot graphs should be designed. We describe a data structure appropriate to include the biplot description and we specify the algorithm(s) to be used for several biplot types.
Frederic Udina
core +1 more source
Irrigation and Drainage, EarlyView.ABSTRACT Flow rates for applying nutrient solutions in hydroponic systems are empirically known, yet uncertainties remain regarding whether brackish water affects the optimal flow rate and, consequently, biomass production and allocation. This study evaluated whether variations in application flow rate affect coriander biomass when brackish water is ...
Raphaela Revorêdo Bezerra +7 more
wiley +1 more source
Classical multivariate analysis techniques such as principal components analysis and correspondence analysis use inner products to estimate data values.
Gower, J.C. +2 more
core +1 more source
Compositional data analysis in archaeometry [PDF]
, 2003 We shall call an n × p data matrix fully-compositional if the rows sum to a constant, and sub-compositional if the variables are a subset of a fully-compositional data set1.
Baxter, MJ +3 more
core +1 more source
Journal of Plant Nutrition and Soil Science, EarlyView.ABSTRACT Background: Soil quality can be measured through soil quality indicators that reflect soil processes. Aim: The aim of this study was to (1) identify a limited set of soil quality indicators that are most sensitive to agricultural soil management and that are widely applicable regardless of pedo‐climatic conditions, and (2) link common ...
Giulia Bongiorno +14 more
wiley +1 more source
Biplot and Singular Value Decomposition Macros for Excel© [PDF]
The biplot display is a graph of row and column markers obtained from data that forms a two-way table. The markers are calculated from the singular value decomposition of the data matrix.
Eric P. Smith, Ilya A. Lipkovich
core +1 more source
Food quality profile of fermented cassava dough: A tool for the value chain upgrading
JSFA reports, EarlyView.Abstract Background Agbelima is a fermented cassava mash, which is then cooked into dough. The key quality attributes are color, odor, stretchability, and sour taste. To succeed in upgrading agbelima value chain, there is a need to determine the instrumental parameters that predict the quality of consumer‐preferred attributes of the final product. This
Lionnel Arnaud Chabi China +8 more
wiley +1 more source