Results 21 to 30 of about 18,422 (208)

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

Design and Analysis of Fractional Factorial Experiments From the Viewpoint of Computational Algebraic Statistics [PDF]

open access: yesJournal of Statistical Theory and Practice, 2012
We give an expository review of applications of computational algebraic statistics to design and analysis of fractional factorial experiments based on our recent works. For the purpose of design, the techniques of Gröbner bases and indicator functions allow us to treat fractional factorial designs without distinction between regular designs and non ...
Aoki, Satoshi, Takemura, Akimichi
openaire   +2 more sources

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

Statistical Optimization of Urinary Organic Acids Analysis by a Multi-Factorial Design of Experiment [PDF]

open access: yesAnalytica, 2020
The analysis of urinary organic acids is useful for patients suspected to have inborn errors of metabolism known as organic acidurias. These diseases cause an accumulation of organic acids in body fluids and their abnormal excretion in urines. By means of chemometrics tools, such as principal component analysis and multiple linear regression, it was ...
Marco Pazzi   +5 more
openaire   +1 more source

Comparison Between some Methods of Tackling the Lack of Experimental Units Needed for Application of Factorial Experiments [PDF]

open access: yesالمجلة العراقية للعلوم الاحصائية, 2011
Most of the time the researcher confronts a decrease in the experimental units required when applying a certain design, this problem appears especially when conducting the factorial experiments which mostly need great numbers of experimental units, to ...
doaj   +1 more source

Development of a Discriminative Dissolution Method, Using In-Silico Tool for Hydrochlorothiazide and Valsartan Tablets

open access: yesPharmaceutics, 2023
Hydrochlorothiazide (HTZ) and Valsartan (VAL) are poorly soluble drugs in BCS classes IV and II. This study aimed to develop a method to assess the dissolution profile of tablets containing HTZ (12.5 mg) and VAL (160 mg) as a fixed-dose combination ...
Rosmery Merma Leon   +4 more
doaj   +1 more source

A short history of algebraic statistics [PDF]

open access: yes, 2008
In algebraic statistics, computational techniques from algebraic geometry become tools to address statistical problems. This, in turn, may prompt research in algebraic geometry. The basic ideas at the core of algebraic statistics will be presented. In
Eva Riccomagno, Riccomagno, Eva
core   +1 more source

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