Results 21 to 30 of about 919 (204)

The existence of directed BIBDs

open access: yesDiscrete Mathematics, 2003
For any natural number \(k\geqq 3\) and any integer \(\lambda \), let c\( _{d}(k,\lambda )\) be the least integer such that the necessary conditions 2\( \lambda \)(\(\lambda -1)\equiv 0\pmod{(k-1)}\) and \(\lambda v(v-1)\equiv 0 \pmod{[k/2]}\) for the existence of a DB\((k,\lambda;v)\) are also sufficient, for all \(v \geqq c_{d}(k,\lambda ).\) In the ...
Yanxun Chang, Giovanni Lo Faro
openaire   +3 more sources

Block-Graceful Designs

open access: yesJournal of Mathematics, 2023
In this article, we adapt the edge-graceful graph labeling definition into block designs and define a block design V,B with V=v and B=b as block-graceful if there exists a bijection f:B⟶1,2,…,b such that the induced mapping f+:V⟶Zv given by f+x=∑x∈AA ...
Dilara Erdemir, Emre Kolotoğlu
doaj   +1 more source

Analysis of Covariance of Reinforced Balanced Incomplete Block Designs With a Single Explanatory Variable [PDF]

open access: yesJournal of Statistical Theory and Applications (JSTA), 2014
Reinforced balanced incomplete block designs (BIBDs) are very useful in statistical planning of experiments as they can be constructed for any number of treatments for given numbers of replications.
D.K. Ghosh, M.G. Bhatt, S.C. Bagui
doaj   +1 more source

Antibody response in snakes with boid inclusion body disease.

open access: yesPLoS ONE, 2019
Boid Inclusion Body Disease (BIBD) is a potentially fatal disease reported in captive boid snakes worldwide that is caused by reptarenavirus infection.
Katharina Windbichler   +8 more
doaj   +1 more source

The influence of yeasts and copper sulphate addition on aroma of Viennese Rheinriesling wines

open access: yesOENO One, 2021
The influence of two yeast strains and the addition of copper sulphate on the aroma of Riesling wines was monitored. Two commercially available yeast strains, Zymaflore VL3 and X-Pure, were applied.
Dragos Pavelescu   +2 more
doaj   +1 more source

Co-infecting Reptarenaviruses Can Be Vertically Transmitted in Boa Constrictor.

open access: yesPLoS Pathogens, 2017
Boid inclusion body disease (BIBD) is an often fatal disease affecting mainly constrictor snakes. BIBD has been associated with infection, and more recently with coinfection, by various reptarenavirus species (family Arenaviridae). Thus far BIBD has only
Saskia Keller   +6 more
doaj   +1 more source

Applications of design theory for the constructions of MDS matrices for lightweight cryptography

open access: yesJournal of Mathematical Cryptology, 2017
In this paper, we observe simple yet subtle interconnections among design theory, coding theory and cryptography. Maximum distance separable (MDS) matrices have applications not only in coding theory but are also of great importance in the design of ...
Gupta Kishan Chand   +2 more
doaj   +1 more source

Differences in Tissue and Species Tropism of Reptarenavirus Species Studied by Vesicular Stomatitis Virus Pseudotypes

open access: yesViruses, 2020
Reptarenaviruses cause Boid Inclusion Body Disease (BIBD), and co-infections by several reptarenaviruses are common in affected snakes. Reptarenaviruses have only been found in captive snakes, and their reservoir hosts remain unknown. In affected animals,
Yegor Korzyukov   +10 more
doaj   +1 more source

A note on BIBD's [PDF]

open access: yesJournal of the Australian Mathematical Society, 1973
A balanced incomplete block design or BIBD is defined as an arrangement of v objects in b blocks containing k objects all different, so that there are r blocks containing a given object and λ blocks containing any two given objects.
openaire   +2 more sources

Virtopsy of a gravid Boa constrictor using computed tomography and magnetic resonance imaging

open access: yesVeterinary and Animal Science, 2020
: This article presents radiologic examinations of a deeply sedated Boa constrictor with boid inclusion body disease (BIBD) as an adjunction to the subsequent necropsy. This method is known as virtopsy. The Boa constrictor in the present case was gravid.
Dominic Gascho   +5 more
doaj   +1 more source

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