Results 21 to 30 of about 3,517,629 (284)

Modelling and Predicting Self-Compacting High Early Age Strength Mortars Properties: Comparison of Response Models from Full, Fractioned and Small Central Composite Designs

Applied Sciences, 2023
The mixture design of cement-based materials can be complex due to the increasing number of constituent raw materials and multiple requirements in terms of engineering performance and economic and environmental efficiency.
Nara Cangussu, Ana Mafalda Matos, Paula Milheiro-Oliveira, Lino Maia   +3 more
doaj   +1 more source

Simulation-Based Power Analysis for Factorial Analysis of Variance Designs

Advances in Methods and Practices in Psychological Science, 2021
Researchers often rely on analysis of variance (ANOVA) when they report results of experiments. To ensure that a study is adequately powered to yield informative results with an ANOVA, researchers can perform an a priori power analysis.
Daniël Lakens, Aaron R. Caldwell
doaj   +1 more source

Statistical factorial designs for optimum production of thermostable α-amylase by the degradative bacterium Parageobacillus thermoglucosidasius Pharon1 isolated from Sinai, Egypt

Journal of Genetic Engineering and Biotechnology, 2021
Background This study aimed to isolate potent thermophilic and amylolytic bacteria from a hot spring of Pharaoh’s bath, Sinai, Egypt, and screen its degradative activity.
Ali M. Saeed, Einas H. El-Shatoury, Hayam A. E. Sayed   +2 more
doaj   +1 more source

Weighted rank statistics in factorial designs with fixed effects

Statistica Neerlandica, 2002
Nonparametric methods for the analysis of factorial designs with two fixed factors are considered. The sample sizes may be unequal and the distribution functions are not assumed to be continuous. Nonparametric hypotheses for the main effects and for the interaction are tested by ranking procedures where the statistics are weighted according to the ...
Brunner, E., Domhof, S., Purwar, Rahul
openaire   +3 more sources

Generalizations of the Tests by Kruskal-Wallis, Friedman and van der Waerden for Split-plot Designs

Austrian Journal of Statistics, 2023
Generalizations of the 1-factorial tests by Kruskal-Wallis and Friedman, as well as of the van der Waerden test are proposed for factorial split-plot designs, both allowing interactions.
Haiko Lüpsen
doaj   +1 more source

Optimization of Welding Process of Geomembranes in Biodigesters Using Design of Factorial Experiments

Energies, 2023
This research focuses on the optimization of the thermofusion process in the construction of biodigesters as it has a direct influence on their quality and durability.
Rocio Camarena-Martinez, Roberto Baeza-Serrato, Rocio A. Lizarraga-Morales   +2 more
doaj   +1 more source

Designs for generalized linear models with several variables and model uncertainty [PDF]

, 2006
Standard factorial designs may sometimes be inadequate for experiments that aim to estimate a generalized linear model, for example, for describing a binary response in terms of several variables.
D. C. Woods, Lewis, S. M., Woods, D. C., K. G. Russell, Eccleston, J. A., S. M. Lewis, J. A Eccleston, S. M Lewis, D. C Woods, K. G Russell, Russell, K. G., J. A. Eccleston   +11 more
core   +1 more source

Statistical isomorphism of three-level fractional factorial designs

, 2006
From a statistician's standpoint, the interesting kind of isomorphism for fractional factorial designs depends on the statistical application. Combinatorially isomorphic fractional factorial designs may have different statistical properties when factors ...
Gilmour, Steven G.; id_orcid, Mead, Roger, Tsai, Pi W.   +2 more
core   +5 more sources

Efficient Blocked Fractional Factorial Designs for Stated Choice Experiments of Size Two and Four

International Journal of Mathematics and Mathematical Sciences, 2023
Stated choice experiments are increasingly becoming popular due to their ability to optimize information gain with limited resources. Many designs have been developed for the selection of various attributes and their levels to form choice sets.
Emmanuel Amoah, Jakperik Dioggban, Adjabui Michael Jackson   +2 more
doaj   +1 more source

Statistical modeling and optimization of ultrasound-assisted biodiesel production using various experimental designs

Zaštita Materijala, 2019
The present study compares the performances of the regression models developed by the response surface methodology combined with the full factorial, Box-Behnken or face central composite designs applied for the ultrasound-assisted KOH-catalyzed ...
Vlada B. Veljković, Dragana B. Radosavljević, Ivan J. Stojković   +2 more
doaj   +1 more source