Balance, Orthogonality and Efficiency Factors in Factorial Design
研究了因子设计中一般平衡性与正交因子结构的关系，并给出了更紧且适用范围更广的效率因子上限。
SUMMARY It is shown that (i) general balance with respect to the factorial structure and (ii) orthogonal factorial structure are essentially the same for factorial designs with a single system of blocks. Upper bounds for efficiency factors in generally balanced factorial designs are found which are tighter and more widely applicable than those previously available.