NEWS LETTER Jan.- March, 2007

Abstract

A new class of designs called doubly nested partially balanced incomplete block (DNPBIB) designs has been introduced. Some general methods for construction of doubly nested partially balanced incomplete block designs are obtained using DNBIB designs, nested balanced incomplete block (NBIB) designs and partially balanced incomplete block designs. A catalogue of 2 and 3-associate DNPBIB designs for v ≤ 20 and r ≤30 has also been prepared. In another study attempt has been made to study the production and consumption pattern and estimation of the elasticities of demand and supply for major fruits and vegetables