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 尋優(yōu)算法運(yùn)用直接求非劣解的概念,借用枚舉和直接方法進(jìn)行尋優(yōu),提出了根據(jù)各目標(biāo)函數(shù)的重要程度及變化程度選擇最優(yōu)解的原則。
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 根據(jù)管網(wǎng)系統(tǒng)的功能要求,設(shè)計(jì)特點(diǎn)及單元重要性的分析,將系統(tǒng)優(yōu)化變量轉(zhuǎn)化為較少的離散變量,并利用正交枚舉法進(jìn)行簡(jiǎn)化計(jì)算,從而避免了大規(guī)模非線性規(guī)劃求解的困難。
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月在王朗自然保護(hù)區(qū)內(nèi)設(shè)立了3個(gè)定位研究樣地和4個(gè)臨時(shí)樣地,通過多次現(xiàn)場(chǎng)采樣與室內(nèi)實(shí)驗(yàn)分析,測(cè)定了白樺林、岷江冷杉林、紫果云杉林、繡線菊-羊茅群落、羊茅群落及高山柳灌木叢等6種不同植物群落內(nèi)土壤微生物三大類群數(shù)量、功能微生物數(shù)量、土壤養(yǎng)分,并在固定樣地內(nèi)使用埋袋法進(jìn)行了三個(gè)埋藏深度的凋落物分解袋試驗(yàn),初步研究了枝條、闊葉、針葉等凋落物組分在不同分解階段所含養(yǎng)分的動(dòng)態(tài)變化。
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,本文對(duì)遺傳算法在具有主次倉(cāng)庫(kù)的生產(chǎn)組織優(yōu)化模型及算法進(jìn)行了改進(jìn),包括客戶需求量的變化、次倉(cāng)庫(kù)的選擇和費(fèi)用調(diào)整策略,并與枚舉、文獻(xiàn)等的方法進(jìn)行了比較,同時(shí)對(duì)參數(shù)進(jìn)行了分析,對(duì)于參數(shù)的設(shè)置范圍有一定的借鑒作用。