Results 11 to 20 of about 15,863 (273)

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

open access: yesInternational 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   +2 more
doaj   +1 more source

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

open access: yesEnergies, 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   +2 more
doaj   +1 more source

Analysis of frequency data: The ANOFA framework [PDF]

open access: yesTutorials in Quantitative Methods for Psychology, 2023
Analyses of frequencies are commonly done using a chi-square test. This test, derived from a normal approximation, is deemed generally efficient (controlling type-I error rates fairly well and having good statistical power).
Laurencelle, Louis, Cousineau, Denis
doaj   +1 more source

NRC Designs—New Tools for Successful Agricultural Experiments

open access: yesAgronomy, 2021
In a nested row–column design (NRC), the experimental units in each of n blocks are grouped into n1 rows and n2 columns. Due to its structure, this experimental design allows full control of the experimental material and a relatively simple feedback loop
Agnieszka Łacka
doaj   +1 more source

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

open access: yesZaštita 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   +2 more
doaj   +1 more source

D-Optimal Designs for Binary and Weighted Linear Regression Models: One Design Variable

open access: yesMathematics, 2023
D-optimality is a well-known concept in experimental design that seeks to select an optimal set of design points to estimate the unknown parameters of a statistical model with a minimum variance.
Necla Gündüz, Bernard Torsney
doaj   +1 more source

Improvement of lipase production from Geotrichum sp. in shaken flasks [PDF]

open access: yesChemical Industry and Chemical Engineering Quarterly, 2012
This work is focused on the study of different variables on inoculum build-up aiming to improve the lipase production by Geotrichum sp. by means a sequential strategy of experimental design.
Maldonadoa Resende Rafael   +5 more
doaj   +1 more source

Statistical Based Bioprocess Design for Improved Production of Amylase from Halophilic Bacillus sp. H7 Isolated from Marine Water

open access: yesMolecules, 2021
Amylase (EC 3.2.1.1) enzyme has gained tremendous demand in various industries, including wastewater treatment, bioremediation and nano-biotechnology. This compels the availability of enzyme in greater yields that can be achieved by employing potential ...
J. N. Bandal   +6 more
doaj   +1 more source

Advances in Breeding for Mixed Cropping – Incomplete Factorials and the Producer/Associate Concept

open access: yesFrontiers in Plant Science, 2021
Mixed cropping has been suggested as a resource-efficient approach to meet high produce demands while maintaining biodiversity and minimizing environmental impact.
Benedikt Haug   +9 more
doaj   +1 more source

Weighted rank statistics in factorial designs with fixed effects

open access: yesStatistica 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

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