In the light of the conception of non - inferior result , optimum algorithm utilizes enumeration method and direct method , according to important and variable degrees of various objective function , the principle of selecting the optimum result is put forward 寻优算法运用直接求非劣解的概念,借用枚举和直接方法进行寻优,提出了根据各目标函数的重要程度及变化程度选择最优解的原则。
Depending on the function requirement , design character and component importance analysis , the system design is changed into the optimum problem with fewer discrete varieties , and the difficulty of solving large nonlinear scheme is eschewed by using orthogonal enumeration method 根据管网系统的功能要求,设计特点及单元重要性的分析,将系统优化变量转化为较少的离散变量,并利用正交枚举法进行简化计算,从而避免了大规模非线性规划求解的困难。
Seven plots selected from wanglang reserve were distributed in different types of forest and at different altitude , and different plot has different microclimate . soil property , microbial population , soil nutrient content of forest soil were determined in wanglang natural reserve , from may to october 2002 to july 2003 , the ecological distribution of three main groups , bacteria , actinomycete and fungi were determined in the forest soils by the cell enumeration methods . six kinds of physiological groups , including ammoniation bacteria , nitrification bacteria , nitrosification bacteria , aerobic autogenesis azotobacter , aerobic cellulose - decomposing bacteria and anaerobic cellulose - decomposing bacteria were enumerated by the most - probable number ( mpn ) 2001年10月在王朗自然保护区内设立了3个定位研究样地和4个临时样地,通过多次现场采样与室内实验分析,测定了白桦林、岷江冷杉林、紫果云杉林、绣线菊-羊茅群落、羊茅群落及高山柳灌木丛等6种不同植物群落内土壤微生物三大类群数量、功能微生物数量、土壤养分,并在固定样地内使用埋袋法进行了三个埋藏深度的凋落物分解袋试验,初步研究了枝条、阔叶、针叶等凋落物组分在不同分解阶段所含养分的动态变化。
In addition , the paper improves the genetic algorithms - based approach on the model with primary and secondary warehouses , including the change of customer demand , the choice of second warehouse arid the adjust policy of cost , compared with the enumeration method and the methods in literature , analyzing the parameter , giving a reference to setup range of parameter 另外,本文对遗传算法在具有主次仓库的生产组织优化模型及算法进行了改进,包括客户需求量的变化、次仓库的选择和费用调整策略,并与枚举、文献等的方法进行了比较,同时对参数进行了分析,对于参数的设置范围有一定的借鉴作用。