This article , using maximum reservation crossover , self - adapting adjustment technique , designed suitable genetic algorithm based on natural number encode , which showed well ability in as / rs optimization , and indicated genetic algorithm has spacious application prospect in material flow system optimization 本文利用最大保留交叉、交叉率和变异率自适应调整等技术，设计了基于自然数编码的遗传算法，在as rs的优化中显示了优良的性能。同时这也预示着遗传算法在物流系统优化问题中具有广阔的应用前景。
For instance numeric compounds , such as natural numbers , real number , date , phone numbers etc . , are of this type . the second type is one that cannot be exactly represented by regular expressions , for they are open set and have no closed form representation . for instance , noun compounds and verb compounds are of this type 第一种是封闭型，这类型的未知词虽然数量上可能有无穷多个，但是可以用规则语法( regularexpression )形式的构词律产生，例如和数字有关的复合词，不管是自然数，小数，序数，号码，时间等都属于这种类型。
Peng and jiao prove that if is a non - isotropic and linearly full harmonic map , and there is a natural number k such that ( 0 ) = , ( 1 ) , . . . , ( k - 1 ) are harmonic , but ( k ) is not harmonic , then ord ( ) = k . obviously , this method is not practicable , because it is far more difficult to determine whether ( j ) is harmonic than to determine whether 0 is orthogonal to j , while it is also difficult to determine whether is non - isotropic and linearly full Pj }证明:若沪是线性满非迷向的调和映照，且存在一自然数k ，使倒0 )二沪，尹’ ) ， … ，尹“一’ )是调和映照，但词们不是调和映照，则t ) i . d (树= k 。显然，用} pj {的结果来计算c ) rd (司实际上是行不通的，这是因为判断尸， )是否调和远比判断业与鱼是否正交要困难，更何况还要求笋是线性满非迷向的(这本身难于断定) 。
