Results 11 to 20 of about 958,993 (198)

Missing Observations in Split-Plot Central Composite Designs: The Loss in Relative A-, G-, and V- Efficiency

open access: yesJournal of Applied Sciences and Environmental Management, 2021
The trace (A), maximum average prediction variance (G), and integrated average prediction variance (V) criteria are experimental design evaluation criteria, which are based on precision of estimates of parameters and responses. Central Composite Designs(
Y. Yakubu, A.U. Chukwu
doaj   +1 more source

Split-plot designs: What, why, and how [PDF]

open access: yes, 2009
The past decade has seen rapid advances in the development of new methods for the design and analysis of split-plot experiments. Unfortunately, the value of these designs for industrial experimentation has not been fully appreciated.
Bradley Jones, Christopher J. Nachtsheim
core   +1 more source

Split-Plot Central Composite Designs Robust to a Pair of Missing Observations

open access: yesJournal of Applied Sciences and Environmental Management, 2018
This study constructs robust split-plot central composite designs against missing pairs of observations. Split-plot central composite designs (CCD) consist of factorial (f), whole-plot axial (α), subplot axial (β), and center (c) points. A loss function
Y. Yakubu, AU Chukwu
doaj   +1 more source

Experimentos em parcelas subdivididas com tratamentos primários em blocos incompletos parcialmente balanceados I: uma solução das equações normais Split-plot experiments with main treatments in partially balanced incomplete blocks I: a solution of the normal equations

open access: yesScientia Agricola, 1995
O objetivo deste trabalho foi realizar um estudo para obtenção de uma solução adequada das equações normais de experimentos em parcelas subdivididas com tratamentos primários dispostos segundo uma estrutura de blocos incompletos parcialmente balanceados ...
A.R. de Morais, M.C Stolf Nogueira
doaj   +1 more source

Effect of packaging materials and storage environment on fennel seedling growth

open access: yesBioscience Journal, 2019
The objective of the present study was to assess the influence of the packaging material (cotton cloth bag, multifolium paper and glass container) and storage environment (laboratory and cold chamber conditions) on fennel seedling growth.
Raquel Fialho Rubim   +4 more
doaj   +3 more sources

Evaluation of Textile Wastewater Treatment Using Combined Methods: Factor Optimization via Split Plot RSM [PDF]

open access: yesIranian Journal of Chemistry & Chemical Engineering, 2022
The increase in the consumption of textile products as well as the use of dye compounds has increased the pollution of the effluent in these industries. Discharge of this wastewater without proper treatment can cause groundwater pollution, poisoning, and
Asadollah Karimi   +2 more
doaj   +1 more source

Soil amendment with biochar and manure alters wood stake decomposition and fungal community composition

open access: yesGCB Bioenergy, 2023
Biochar and manure can be used for sustainable land management. However, little is known about how soil amendments might affect surface and belowground microbial processes and subsequent wood decomposition.
Ruirui Zhao   +2 more
doaj   +1 more source

Aligned Rank Tests for Interactions in Split-Plot Designs: Distributional Assumptions and Stochastic Heterogeneity [PDF]

open access: yes, 2009
Three aligned rank methods for transforming data from multiple group repeated measures (split-plot) designs are reviewed. Univariate and multivariate statistics for testing the interaction in split-plot designs are elaborated.
Beasley, T. Mark, Zumbo, Bruno D.
core   +2 more sources

A Joint Multiresponse Split-Plot Modeling and Optimization Including Fixed and Random Effects

open access: yesAustrian Journal of Statistics, 2022
This paper deals with a proposal for joint modeling and process optimization for split-plot designs analyzed through mixed response surface models. It addresses the following main issues: i) the building of a joint mixed response surface model for a ...
Rossella Berni   +1 more
doaj   +3 more sources

Influence of row spacing reduction on maize grain yield in regions with a short summer [PDF]

open access: yesPesquisa Agropecuária Brasileira, 2001
The interest in reducing maize row spacing in the short growing season regions of Brazil is increasing due to potential advantages such as higher radiation use efficiency.
Luís Sangoi   +4 more
doaj   +1 more source

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