Showing papers by "Indian Agricultural Statistics Research Institute published in 1991"
17 citations
TL;DR: In this paper, the universal optimality of some block designs with unequal block sizes was studied under the usual homoscedastic model and under a certain heteroscaledastic model.
17 citations
TL;DR: In this article, the robustness of several types of designs against missing data was studied. And the robust properties of orthogonal resolution III fractional factorial designs and second-order rotatable designs were studied when a single observation was missing.
Abstract: This article studies the robustness of several types of designs against missing data. The robustness of orthogonal resolution III fractional factorial designs and second-order rotatable designs is studied when a single observation is missing. We also study the robustness of balanced incomplete block designs when a block is missing and of Youden square designs when a column is missing.
13 citations
Journal Article•
TL;DR: A large number of research papers in journals dealing with non-linear models in fisheries, if nothing else, is a testimony to the fact that such models play a very important role in this area as discussed by the authors.
Abstract: A large number of research^ papers in journals dealing with non-linear models in fisheries, if nothing else, is a testimony to the fact that such models play a very important role in this area. For example, studies on length-weight relationship (Ai^anasastry 1989, Dcvadoss 1989. Jayasankar 1989, Premalatha 1989). estimation of fecundi^ (Piska and Waghniy 1989, Hoda and Qureshi 1989) and synthetic models (Kurian 1989), all involve models in which the parameters appear in a non-linear manner.
4 citations
TL;DR: In this paper, the authors extended the concept of resistance to general variance balanced block designs as well as universally optimal block designs with unequal block sizes, and constructed locally resistant balanced incomplete block designs of degree one.
2 citations
TL;DR: In this paper, two minimum mean square error estimators of heritability were proposed and compared with the conventional regression estimator with live data, which is the state-of-the-art estimator for heritability.
Abstract: Two minimum mean square error estimators of heritability are proposed and compared with the conventional regression estimator with live data.
TL;DR: In this paper, a method has been given for construction of balanced asymmetrical factorial designs of the type (v −t) × 22 by using truncated balanced incomplete block designs obtainable by omitting t treatments.
Abstract: DAS (1960) gave a method of construction of confounded balanced asymmetrical factorial designs of the type v × 22 by using BIB designs. In the present paper a method has been given for construction of balanced asymmetrical factorial designs of the type (v–t) × 22 by using truncated balanced incomplete block designs obtainable by omitting t treatments. Likewise, partially balanced asymmetrical factorial designs can also be obtained by omitting any particular treatment alongwith its first or second associate treatments from the v treatments of a PBIB design. We can get a large number of new designs not available in literature through this technique. These designs are well suited for varietal trials with multiple basals.