Results 41 to 50 of about 171,423 (192)

Almost designs and their links with balanced incomplete block designs [PDF]

open access: yesDesigns, Codes and Cryptography, 2019
Almost designs ($t$-adesigns) were proposed and discussed by Ding as a certain generalization of combinatorial designs related to almost difference sets. Unlike $t$-designs, it is not clear whether $t$-adesigns need also be $(t-1)$-designs or $(t-1)$-adesigns.
Jerod Michel, Qi Wang 0012
openaire   +2 more sources

Augmented BIB Design-An Alternative Statistical Design in Germplasm Evaluation Trials

open access: yesJournal of Horticultural Sciences, 2008
Randomized Block Design (RBD) is commonly employed to evaluate a set of germplasm accessions (test treatments) along with local checks. In such a trial, if the test treatments under evaluation are more in number and the availability of the seeds is ...
R Venugopalan   +2 more
doaj   +1 more source

New Combinatorial Construction Techniques for Low-Density Parity-Check Codes and Systematic Repeat-Accumulate Codes [PDF]

open access: yes, 2012
This paper presents several new construction techniques for low-density parity-check (LDPC) and systematic repeat-accumulate (RA) codes. Based on specific classes of combinatorial designs, the improved code design focuses on high-rate structured codes ...
Gruner, Alexander, Huber, Michael
core   +1 more source

Prime-number-assisted block-based neighbor discovery protocol in wireless sensor networks

open access: yesInternational Journal of Distributed Sensor Networks, 2019
During the initial deployment time, wireless sensors continually search their neighbors. The neighbor discovery is not an one-time event because the network topology can be changed anytime due to node mobility and failure. The neighbor discovery protocol
Woosik Lee   +2 more
doaj   +1 more source

On imputation for planned missing data in context questionnaires using plausible values: a comparison of three designs

open access: yesLarge-scale Assessments in Education, 2018
Background This paper extends a recent study by Kaplan and Su (J Educ Behav Stat 41: 51–80, 2016) examining the problem of matrix sampling of context questionnaire scales with respect to the generation of plausible values of cognitive outcomes in large ...
David Kaplan, Dan Su
doaj   +1 more source

A best–worst scaling experiment to prioritize concern about ethical issues in citizen science reveals heterogeneity on people-level v. data-level issues

open access: yesScientific Reports, 2021
“Citizen science” refers to the participation of lay individuals in scientific studies and other activities having scientific objectives. Citizen science gives rise to unique ethical issues that stem from the potentially multifaceted contributions of ...
Christi J. Guerrini   +3 more
doaj   +1 more source

Construction of a reading literacy test item bank for fourth graders based on item response theory

open access: yesFrontiers in Psychology, 2023
IntroductionReading literacy is not only central to students’ academic success during their school years but also crucial to their personal development in their later life.
Qishan Chen   +6 more
doaj   +1 more source

Remarks on balanced incomplete block designs [PDF]

open access: yesProceedings of the American Mathematical Society, 1963
PROOF. Assume the hypothesis and the falsity of either conclusion. Construct matrix A of 2x+2 rows and 4x+4 columns, with entries + 1 and - 1. The first column contains exclusively + 1, and the second column - 1. Set up one-to-one correspondences between rows of A and elements of D; between columns other than the first two of A and blocks of D. Enter +
openaire   +1 more source

Experimentos em parcelas subdivididas com tratamentos primários em blocos incompletos parcialmente balanceados I: uma solução das equações normais Split-plot experiments with main treatments in partially balanced incomplete blocks I: a solution of the normal equations

open access: yesScientia Agricola, 1995
O objetivo deste trabalho foi realizar um estudo para obtenção de uma solução adequada das equações normais de experimentos em parcelas subdivididas com tratamentos primários dispostos segundo uma estrutura de blocos incompletos parcialmente balanceados ...
A.R. de Morais, M.C Stolf Nogueira
doaj   +1 more source

Recursive Methods for Construction of Balanced N-ary Block Designs [PDF]

open access: yes, 2005
2000 Mathematics Subject Classification: Primary 05B05; secondary 62K10.This paper presents a recursive method for the construction of balanced n-ary block designs.
Bousseboua, M., Gheribi-Aoulmi, Z.
core  

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