Results 121 to 130 of about 36,156 (153)
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Composite construction of group divisible designs
Annals of the Institute of Statistical Mathematics, 1989zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Sinha, Kishore, Kageyama, Sanpei
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D‐optimal designs and group divisible designs
Journal of Combinatorial Designs, 2006AbstractWe obtain new conditions on the existence of a square matrix whose Gram matrix has a block structure with certain properties, including D‐optimal designs of order $n\equiv 3 \pmod 4$, and investigate relations to group divisible designs. We also find a matrix with large determinant for n = 39. © 2006 Wiley Periodicals, Inc. J Combin Designs 14:
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Families of Hadamard group divisible designs
Journal of Statistical Planning and Inference, 1979Abstract By a family of designs we mean a set of designs whose parameters can be represented as functions of an auxiliary variable t where the design will exist for infinitely many values of t. The best known family is probably the family of finite projective planes with υ = b = t2 + t + 1, r = k = t + 1, and λ = 1.
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On Group Divisible Rotatable Designs
Calcutta Statistical Association Bulletin, 1976Adhikary, Basudeb, Sinha, Bikas Kumar
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A construction of group divisible designs
Journal of Statistical Planning and Inference, 1985The author shows that ''the existence of a resolvable BIB design with parameters \((v=\beta k,b,r,k,\lambda)\) which is not affine, implies the existence of a resolvable regular GD design with parameters: \((v^*=\beta k\), \(b^*=b-\beta\), \(r^*=r-1\), \(k^*=k\), \(\lambda^*_ 1=\lambda -1\), \(\lambda^*_ 2=\lambda\), \(m^*=\beta\), \(n^*=k)''\).
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Series of semiregular group divisible designs
Communications in Statistics - Theory and Methods, 1977Two series of semiregular group divisible designs are given. The first has v=sN + sN−1 , m=s + 1, k = v/s. The second has v = 6t + 6, m = 3, k = 2t + 2. Both series have λ1 =λ2−1. Designs in these series exist for v = 12, 18, 20, 24, 30, etc.
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A series of group divisible designs
Communications in Statistics - Theory and Methods, 1991Bose and Shrikhande C19763 proved that if D(m, k, ⋋) is a Baer subdesign of another SBIBD D1 (v1, k1 ⋋), k1>k, then it also contains a complementary subdesign D* which is symmetric GDD, D* (v*, k*; ⋋-1, ⋋; m, n). Utilising this, we give a necessary condition for a SBIBD D to be a Baer subdesign of D1 and also give the parameters.
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Cancer statistics for African American/Black People 2022
Ca-A Cancer Journal for Clinicians, 2022Angela Giaquinto +2 more
exaly
Cancer statistics for the US Hispanic/Latino population, 2021
Ca-A Cancer Journal for Clinicians, 2021Kimberly D Miller +2 more
exaly

