Results 21 to 30 of about 85,957 (174)

Construction of Some Circular Regular Graph Designs in Blocks of Size Four Using Cyclic Shifts

open access: yesJournal of Statistical Theory and Applications (JSTA), 2020
Circular regular graph designs play an important role in the design of experiments where most of the balanced incomplete block designs require a large number of blocks.
Rashid Ahmed   +3 more
doaj   +1 more source

Balanced incomplete block designs: selected business-related applications and usage caveats [PDF]

open access: yesInnovative Marketing, 2016
Whenever respondents must rank-order a large number of items and/or the reliability of their rankings may be questionable, balanced incomplete block designs (BIBDs) represent a more effective means for doing so than either complete rankings or paired ...
David R. Rink
doaj   +1 more source

Block Intersections in Balanced Incomplete Block Designs [PDF]

open access: yesCanadian Mathematical Bulletin, 1964
One of the most interesting of the smaller BIBD's is the system (8, 14, 7, 4, 3), where we write the parameters in the standard order v, b, r, k, λ. One representation of a design with these parameters is 1248, 3567; 2358, 1467; 3468, 1257; 4578, 1236; 5618,2347; 6728,1345; 7138,2456.
Stanton, R. G., Sprott, D. A.
openaire   +1 more source

On the Composition of Balanced Incomplete Block Designs [PDF]

open access: yesCanadian Journal of Mathematics, 1960
The object of this paper is to develop a method of constructing balanced incomplete block designs. It consists in utilizing the existence of two balanced incomplete block designs to obtain another such design by what may be called the method of composition.1. Preliminary results on orthogonal arrays and balanced incomplete block designs.
Bose, R. C., Shrikhande, S. S.
openaire   +2 more sources

t-designs involving treatment combinations for animal experimentation

open access: yesIndian Journal of Animal Sciences, 2023
Small and marginal farmers in India prefer an Integrated Farming System (IFS) approach i.e. a mixture of crop and livestock that enables them to maintain a stable income throughout the year.
SAYANTANI KARMAKAR   +3 more
doaj   +1 more source

New Results Regarding the Construction Method for D‑optimal Chemical Balance Weighing Designs

open access: yesActa Universitatis Lodziensis. Folia Oeconomica, 2020
We study an experiment in which we determine unknown measurements of p objects in n weighing operations according to the model of the chemical balance weighing design. We determine a design which is D‑optimal. For the construction of the D‑optimal design,
Bronisław Ceranka, Małgorzata Graczyk
doaj   +1 more source

On incomplete and balanced incomplete block designs [PDF]

open access: yesProceedings of the American Mathematical Society, 1963
By an incomplete block design we will mean an arrangement of v different varieties of objects in b distinct blocks or sets such that a block does not contain all the varieties and a variety appears at most once in a block. An incomplete block design which satisfies two extra conditions, viz.
openaire   +2 more sources

Optimum Choice of Covariates for a Series of SBIBDS Obtained Through Projective Geometry [PDF]

open access: yes, 2007
A block design set up is considered in presence of a number of controllable covariates. The problem is that of choosing the values of the covariates so that for a given block design, it is optimum in the sense of attaining minimum variance for the ...
Das, Premadhis   +2 more
core   +2 more sources

On the Classification of Splitting (v, u×c, λ) BIBDs

open access: yesCybernetics and Information Technologies, 2018
The (v, u×c, λ)-splitting balanced incomplete block designs correspond to c-splitting authentication codes. We classify splitting balanced incomplete block designs with definite parameters.
Zhelezova Stela
doaj   +1 more source

On quasi-orthogonal cocycles [PDF]

open access: yes, 2017
We introduce the notion of quasi-orthogonal cocycle. This is motivated in part by the maximal determinant problem for square {±1}-matrices of size congruent to 2 modulo 4. Quasi-orthogonal cocycles are analogous to the orthogonal cocycles of algebraic
Armario Sampalo, José Andrés   +1 more
core   +1 more source

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