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Chatbot-Delivered Real-Time Support to Improve HIV Self-Testing Rates: A Randomized Clinical Trial.
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Cyclic Group Divisible Designs
Calcutta Statistical Association Bulletin, 1995New cyclic solutions of several group divisible incomplete block designs arc presented, A new group divisible desian is reported whose solution is also cyclic. We also present non-isomorphic solutions of several group divisible designs listed in the catalogue of Clatworthy (1973).
Midha, Chand K., Dey, Aloke
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Spreads and group divisible designs
Designs, Codes and Cryptography, 1993This paper establishes a beautiful relation between geometric \(t\)-spreads and group divisible designs the dual of which is again a group divisible design. Let \({\mathcal S}\) be a \(t\)-spread of \(PG(d,q)\), i.e. a partition of the point set of \(PG(d,q)\) in \(t\)-dimensional subspaces, called the component of \({\mathcal S}\).
Christine M. O'Keefe, Alan Rahilly
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A generalization of group divisible t $t$‐designs
Journal of Combinatorial Designs, 2023AbstractCameron defined the concept of generalized ‐designs, which generalized ‐designs, resolvable designs and orthogonal arrays. This paper introduces a new class of combinatorial designs which simultaneously provide a generalization of both generalized ‐designs and group divisible ‐designs.
Sijia Liu +4 more
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Constructions of Group Divisible Designs
Designs, Codes and Cryptography, 1996This paper presents some constructions for group divisible designs from generalized partial difference matrices. Certain classes of examples are also given.
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Geometriae Dedicata, 1992
The authors generalize previous work on translation divisible designs (with \(\lambda_ 1=0)\) and, in particular, translation transversal designs to translation divisible designs with parameters \((s,k,\lambda_ 1,\lambda_ 2)\).
Schulz, Ralph-Hardo +1 more
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The authors generalize previous work on translation divisible designs (with \(\lambda_ 1=0)\) and, in particular, translation transversal designs to translation divisible designs with parameters \((s,k,\lambda_ 1,\lambda_ 2)\).
Schulz, Ralph-Hardo +1 more
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On Automorphism Groups of Divisible Designs
Canadian Journal of Mathematics, 1982A (group) divisible design is a tactical configuration for which the v points are split into m classes of n each, such that points have joining number λ (resp. λ2) if and only if they are in the same (resp. in different) classes. We are interested in such designs with a nice automorphism group.
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Constant Weight Codes and Group Divisible Designs
Designs, Codes and Cryptography, 1999This paper continues the study of optimal constant weight codes over arbitrary alphabets which was initiated by \textit{T. Etzion} [Optimal constant weight codes over \(Z_k\) and generalized designs, Discrete Math. 169, No. 1-3, 55-82 (1997)]. Etzion showed that such codes are equivalent to special GDD's known as generalized Steiner systems \(\text{GS}(
Simon Blake-Wilson, Kevin T. Phelps
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On a Method of Construction of Group Divisible Designs
Calcutta Statistical Association Bulletin, 1990A simple method of constsuction for Group divisible (GD) designs is given with the help of known bananced incomplete block (BIB) designs.
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Some Results on Group Divisible Designs
Calcutta Statistical Association Bulletin, 1981A condition is established for obtaining a Group Divisible (GD) design from an asymmetric Bm design. A method is also given for constructing a variance balanced design from a GD design.
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