balanced incomplete block design

(redirected from Block design)
Also found in: Medical, Wikipedia.

balanced incomplete block design

[¦bal·ənst ‚iŋ·kəm‚plēt ′bläk di‚zīn]
(mathematics)
For positive integers b, ν, r, k, and λ, an arrangement of ν elements into b subsets or blocks so that each block contains exactly k distinct elements, each element occurs in r blocks, and every combination of two elements occurs together in exactly λ blocks. Also known as (b,ν, r, k,λ)-design.
References in periodicals archive ?
Based on the analysis of numerous wheelsets designs the authors have proposed new technical solution of wheelset in which the wheels have a block design (Fig.
Dazzling blue diamonds and triangles create a winning design in AccuQuilt's 2014 Quilt Block Design Contest.
Previous engine block design choices were high strength or compact or lightweight," said Ed Waszczenko, engine systems supervisor.
The Power Block design approach allows the power engineer to achieve the highest efficiency and maximum possible power and current density while maintaining a high performance system at a lower cost when compared to a complete module design approach.
Log Cabin Quilts: The Basics & Beyond covers modern and classic quilt designs in the Log Cabin tradition and provides a new book on how to reproduce the basic Log Cabin block design.
the ICC, within cluster sample size, the heterogeneity in treatment effects across clusters, and the number of clusters in the experiment) the statistical power of a randomized block design remains higher than the power of a cluster randomized design even when contamination causes the effect size to decrease by as much as 10-60%.
A block design is generally composed of task (stimulation) and rest (rest).
2, that offers design reuse capabilities with block design technology.
The concealed double-action hammer uses a unique hammer block design which promotes snag-free operation.
It has a compact low-profile block design that can be mounted at any angle and used for retrofit or for new machinery.
and Padgett, with a US company, update the constructions and combinatorial aspects of block design described in Raghavarao's 1971 Constructions and Combinatorial Problems in Design of Experiments.
The children's intellectual function was assessed on six tests (similarities, digit span, picture completion, coding, block design, and mazes) drawn from the Wechsler Intelligence Scale for Children, Version III.