Results 11 to 20 of about 963,610 (298)

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

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

Nonlinear split-plot design modeling and analysis of rice varieties yield

open access: yesScientific African, 2023
In this research, a class of nonlinear split plot design models where the mean function of the split-plot model is not linearizable is presented. This was done by fitting intrinsically nonlinear split-plot design (INSPD) models using the Chapman-Richards
I.J. David, O.E. Asiribo, H.G. Dikko
doaj   +1 more source

Improving the Quality of Dentistry (IQuaD): a cluster factorial randomised controlled trial comparing the effectiveness and cost–benefit of oral hygiene advice and/or periodontal instrumentation with routine care for the prevention and management of periodontal disease in dentate adults attending dental primary care

open access: yesHealth Technology Assessment, 2018
Background: Periodontal disease is preventable but remains the most common oral disease worldwide, with major health and economic implications. Stakeholders lack reliable evidence of the relative clinical effectiveness and cost-effectiveness of different
Craig R Ramsay   +24 more
doaj   +1 more source

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

Do split application of nitrogen and boron influence the hybrid true seed production from potato mother plant?

open access: yesJournal of Biological Research, 2020
Two consecutive field experiments were conducted during the period from October 2013 and 2014 to April 2014 and 2015 to show the effect of split application of nitrogen (SN) and boron (B) on hybrid TPS.
Rajesh Chakraborty
doaj   +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

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

Effects of Aprons on Pitfall Trap Catches of Carabid Beetles in Forests and Fields [PDF]

open access: yes, 2017
This study compared the efficacy of three types of pitfall traps in four forest and two field habitats. Two traps had aprons and one did not. The two apron traps were the same except for a gap between the trap and the plywood-apron, allowing captures ...
Epstein, Marc E, Kulman, Herbert M
core   +2 more sources

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

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