To test the hypothesis that the domestic dogs are derived from several different ancestral gray wolf populations, we compared the sequence of the displacement (D)-loop region of the mitochondrial DNA (mtDNA) from 24 breeds of domestic dog (34 individual dogs) and 3 subspecies of gray wolf (Canis lupus lupus, C.l. pallipes and C.l. chanco; 19 individuals). The intraspecific sequence variations w...

The paper investigates the powerful of hybridizing two computational intelligence methods viz., Gray Wolf Optimization (GWO) and Artificial Neural Networks (ANN) for prediction of heart disease. Gray wolf optimization is a global search method while gradient-based back propagation method is a local search one. The proposed algorithm implies the ability of ANN to find a relationship between the ...

Abstract In this paper, a BP neural network model with 5-9-6 structure is constructed according to various fault gases and different types of drilling fluid. On the basis model, genetic algorithm gray wolf are used optimize threshold weight network. By applying system Horizontal Well Changshen #5 on site Grey Wolf algorithm, lost circulation problem in horizontal section reservoir was effective...