Let w 1 = d, w 2 , ... , w s be the weights of the nonzero codewords in a binary linear [n , k, d] code C, and let w1′ , w2′ , ... , ws ′ ′ be the nonzero weights in the dual code C ⊥ . Let t be an integer in the range 0 < t < d such that there are at most d − t weights wi′ with 0 < wi′ ≤ n − t. Assmus and Mattson proved that the words of any weight w i in C form a t-design. We show that if w 2...

Network design problem is one of the most complicated and yet challenging problems in transportation planning. The Bi-level, non-convex and integer nature of network design problem has made it into one of the most complicated optimization problems. Inclusion of time dimension to the classical network design problem could add to this complexity. In this paper an Ant Colony System (ACS) has been ...

terminal heat stress in mediterranean climates like ahwaz is reduced wheat yield. in order to study effect of terminal heat stress on yield and yield components of 20 spring bread wheat cultivars, an experiment was conducted in ramin university of agricultural and natural resources, ahwaz in 2007-2008. the experimental design was stripe block design in randomized complete block design with thre...

The minimum weight codewords in the Preparata code of length n = 4 m are utilized for the construction of an innnite family of Steiner S(4; f5; 6g; 4 m + 1) designs for any m 2. A t-wise balanced design with parameters t-(v; K;) is a pair (X; B) where X is a set of v points and B is a collection of subsets of X (called blocks) with sizes from the set K, such that every t-subset of X is containe...

abstract the decisions and personal preferences of the designer are vital for all aspects and stages of the design. to elaborate, the designer has the central role in creation, development, detailing and construction of the built forms. also, the scientific/engineering evaluations of the design models are carried out under the directions and decisions of the designer. the paper explores the con...