<正>This paper is concerned with optimal harvesting policy for an age-dependent n-dimensional food chain model.The existence and uniqueness of non-negative solu
<正>In this paper,the problem of reconstructing numerical derivatives from noisy data is considered.A new framework of mollification methods based on the L gene
<正>A new method for parameter optimization of pharmacokinetics based on an artificial immune network named PKAIN is proposed.To improve local searching ability