遺傳指數 的英文怎麼說

中文拼音 [yízhuànzhǐshǔ]
遺傳指數 英文
heritability index
  • 遺 : 遺動詞[書面語] （贈與） offer as a gift; make a present of sth : 遺之千金 present sb with a gener...
  • 傳 : 傳名詞1 （解釋經文的著作） commentaries on classics 2 （傳記） biography 3 （敘述歷史故事的作品）...
  • 指 : 指構詞成分。
  • 數 : 數副詞（屢次） frequently; repeatedly
  • 遺傳 : [生物學] heredity; hereditary; inheritance; inherit
  • 指數 : 1. [經] （比數） index number; index 2. [數學] exponent
  1. According to the phylogenetic tree, the thirteen strains were grouped into four distinct pcr - rflp clusters, namely, coriaria group, myrica group, myrica - casuarina - alnus group and casuarinarmyrica group

    結果顯示弗蘭克氏菌種群內的遺傳多樣性較高，種群分化較大， 13株供試frankia菌株平均每個位點的多樣性指數為0 . 4498 。
  2. Scientists who compared the food preferences of identical and fraternal twins found that some tastes are inherited while others are acquired

    科學家把同卵生和異卵生的雙胞胎對食物選擇的指數進行了對比，發現，一些口味是遺傳的，而其餘的是後天形成的。
  3. The results show that the genetic diversity of filial generations is higher than self - bred progeny ’ s ， the hybrid vigor has manifested at metabolization level 。 the proportion of polymorphic loci ( p. 99 ) in f1 generations was 30. 77 - 36. 36 % ， the mean observed heterozygosity ( ho ) of jmcf （ japanese male chinese female ） was the highest with 0. 1727, the rest populations were ： jfcm （ japanese female chinese male ） 0. 1536 、 cp 0. 1273 and jp 0. 1055 ， the mean effective number of allels per locus in f1 generations ： cp ’ s was the highest with 1. 7318 ， jp ’ s was the lowest with 1. 6718 ， the filial generations ’ values were in the midle of the cp ’ s and jp ’ s and between them there was no brightly difference, with 1. 6955 ( jfp ) and 1. 6927 ( jmp )

    各組的平均雜合度預期值也表現出該趨勢，即：日自交組最低，為0 . 1786 ，日雄中雌雜交組的平均雜合度最高，為0 . 1964 ，日雌中雄雜交組和中自交組分別是0 . 1891和0 . 1865 。 hardy - weinberg平衡下遺傳偏離指數也是雜交組的小於自交組的，平均每個位點的等位基因有效數目中自交組最高為1 . 7318 ，日自交組最低為1 . 6718 ，兩雜交組群體的這一指數相差不多，分別是1 . 6955和1 . 6927 ，位於兩親本的中間水平。
  4. Seventeen important morphological characters were analysed to identify and evaluate genetic diversity of morphology of the lespedeza populations. fourteen vital morphological characters were studied using basic statistics, correlation analysis, factor analysis and cluster analysis. zymograms were analysed using eighteen alleles of seven allozymes

    對14個關健形態學性狀指標的平均值、方差、標準差、變異系數等基本統計分析表明，胡枝子屬植物不同種間以及種內居群間在這14個重要形態學性狀上的遺傳差異較大，變異系數達28 . 89 122 . 36 （全生育天數除外，變異系數為4 . 72 ） 。
  5. The results of issr analysis is ppb = 66. 67 %, h = 0. 2089, i = 0. 3172. genetic diversity of issr is higher than that of allozymes. genetic diversity of d. pleiantha is higher than d. versipelis

    六角蓮的遺傳多樣性高於於八角蓮，等位酶的多態位點比率p為55 . 6 ， issr的多態位點百分率均為70 . 83 ，基因多樣性為0 . 2383 ， shannon多樣性指數為0 . 3576 。
  6. By whitening the covariance matrix of flat ambiguity, correlation between ambiguity components, the number of local extrema of cost function is reduced. the search program getting into precocity is avoided by suitable encoding and genetic operation

    通過白化處理模糊度，減少模糊度搜索中指標函數的局部極值點，採用適當的編碼和遺傳操作使得在種群個體較少的情況下避免搜索陷入早熟。
  7. According to the least twin multiplication to calculating the sensitivity index in several water production functions. thus, the writer obtains the fitted the value of the sensitivity index and the varied rule. at the same time, the writer puts forward a new method named rag a ( real coding based accelerating genetic algorithm ) and combines raga with dpsa to calculating the best irrigation system under the non - sufficient irrigation of well irrigation rice in sanjiang plain

    根據《隨機水文學》理論中的時間序列分析法，建立了適合三江平原井灌水稻需水量預報的非平穩時序隨機模型；通過分析降雨隨機特性，選定季節性時序隨機模型，建立了適合三江平原井灌水稻降雨預報的月平均降雨模型；根據最小二乘法，計算出幾種常用水分生產函數中的敏感指數及敏感系數，進而得到三江平原適宜採用的水分生產函數漠型及模型中敏感指數的變化規律；本文提出遺傳動態規劃法（ raga ? dp ） ，即採用改進的基於實數編碼的加速遺傳演算法（ realcodingbasedacceleratinggeneticalgorithm ，簡稱raga ）與動態規劃法（ dpsa ）相結合，推求非充分灌溉條件下三江平原井灌水稻的最優灌溉制度。
  8. The data indicated that lead tolerance in the adult roadside plants is transmitted through their seeds.

    這些數據指出，成熟的路旁植物的抗鉛性通過種子遺傳。
  9. In this paper, with the helps of the ordinary ecological site - study techniques, electrophoresis and the multivariate analyses, from both the levels of morphological and allozymic variation, we studied the differentiation patterns of 29 morphological characters and 6 allozymes of 97 individuals from 7 populations of euonymus chloranthoides yang, an endangered plant species which is endemic to mt. jinyun of chongqing. we also studied the relationship between such differentiation and its environment factors

    本文以處于瀕危狀態的縉雲衛矛為研究對象，在測定了各種群的生存環境因子基礎上，從形態和等位酶兩個層次採用多種數量分析方法對縉雲衛矛7個種群97個個體的29項形態指標及6種等位酶反映出的生態遺傳分化及其與環境的關系進行了研究。
  10. This study was conducted to examine the interrelationship of 10 seed vigor traits in 12 wheat genotypes through variance, co - variance and path coefficient analysis, to determine broad - sense heritability, and to estimate genetic advance under selection. the genotypes showed significant difference for all traits, except for percentage of normal seedling. genetic correlation between conversion efficiency of seed reserve, electrical conductivity with other traits were not significant, showed that selection for any of them might be possible without hampering any other traits. however path coefficient analysis indicated that conversion efficiency of seed reserve, seed reserve utilization ratio have strong direct effect in affecting seedling weight, and that mean germination time has significantly negatively correlated in affecting gi. moderate to high estimates of broad - sense heritability, genetic coefficient of variation and expected genetic advance were obtained for electrical conductivity, germination index, mean germination time, seed dry weigh, seedling dry weigh, seed reserve depletion ratio indicating the possibility for improving these traits

    本研究利用12個普通小麥品種對10個種子活力性狀的遺傳變異和相關研究，表明除正常幼苗百分率外，其餘種子活力性狀在品種間均存在顯著的差異.種子貯藏物質轉換效率、電導率兩個性狀間及與其它性狀均無顯著的遺傳相關，因此對他們的選擇不會影響到其它性狀.通徑分析表明幼苗干重主要取決于種子貯藏物質轉換效率、種子貯藏物質利用速率;發芽指數主要由平均發芽時間決定.電導率、發芽勢、幼苗干重、種子干重、發芽指數、種子貯藏物質消耗比率6個性狀表現中到高的遺傳力、遺傳變異系數和相對遺傳進展，指明通過遺傳育種手段改良這些性狀是可能的
  11. The obtained results do not support a major gene for body mass index in chinese, the discrepancies between our study and previous studies may result from ethnic difference between chinese and other populations ; the general model provides the best fit to the data, while the environmental model is the second parsimonious model, perhaps due to complex mode of body mass index inheritance ; a moderate heritability estimate is found for body mass index ( h2 = 0. 313 ), lower than that of other populations, this is presumably due to the fact that aside from the influence of genetic bases, body mass index is strongly influenced by environmental factors and that there is a low proportion of obese individuals in samples ( only 4. 1 % individuals have body mass index > 30 )

    分離分析的結果表明， （ 1 ）體重指數不存在主基因分離，不同於在其他非中國人群中檢測的結果，說明存在種群差異性； （ 2 ）一般模型提供了最合適模型，環境模型是次之的嚴格模型，可能由於體重指數遺傳模式的復雜性所致； （ 3 ）中國人群中體重指數具有適中的遺傳率（ h ~ 2 = 0 . 313 ） ，低於其他人群中的結果，這是由於體重指數除了受遺傳因素影響外還受環境因素影響及樣本中低比例的肥胖個體（ 4 . 1的個體bmi 30 ）的原因。
  12. A method of fuzzy optimization design based on genetic algorithm is presented as a new method of parameter optimization design for dc double closed loop speed adjusting system. the method covers three steps. firstly, speed overshoot rate and settling time are chosen as performance indice according to the demand of engineering. these indice are normalized by using fuzzy membership function and then weighted to form objective function of optimization model of the system. secondly, the dynamic response curve of the system with corresponding parameters and peoformance indice are obtained by computerized numerical calculation and simulation. finally, parameters of engineering design are expanded as searching space ; and parameters of speed regulator and current regulator are taken as genes in chromosome. these genes in searching space are optimized to get best solution by way of genetic algorithm. as shown by experimental results, the parameters designed by this method are capable of significantly improving performance indice of the system, which proves that it is a practical and effective method

    提出一種基於遺傳演算法的直流雙閉環調速系統參數優化設計方法.根據工程技術的要求，選用速度超調量和過渡時間作為參數優化性能指標.將該指標用模糊隸屬度函數歸一化，再加權平均形成系統優化模型的目標函數.採用計算機數值計算方法，通過模擬獲得系統對應參數的動態響應曲線及其性能指標.最後以工程設計的參數為搜索范圍，以速度調節器和電流調節器的參數為染色體中的基因，通過遺傳演算法在搜索范圍中優化這些基因，獲得優化解.實驗結果表明，所設計的參數能使系統性能指標有顯著提高
  13. In the fourth chapter, several methods for handling constrains by genetic algorithms for nonlinear programming problems are introduced. these methods were grouped into four categories : methods based on preserving feasibility of solutions, methods based on penalty functions, methods which make a clear distinction between feasible and infeasible solutions and other hybrid methods

    在第四章中介紹了處理約束的四類方法：運算元修正法，罰函數法，可行域搜索法，以及混合遺傳演算法，並對這些方法做了詳細的分析，指出了他們優劣之處。
  14. A niched - penalty approach is used to transform this optimal kinematical design problem to an unconstrained one. a kinematic accuracy comparison of the genetic designed fine - tuning stewart platform with the quasi - newtonian designed one is made. the comparison results have shown that the kinematic accuracy of the genetic designed fine - tuning stewart platform has a much higher accuracy and a compact structure than that of the quasi - newtonian designed one, which guarantees the accomplishment of high precision trajectory tracking and reduces the disturbance of wind to the feed - supporting system

    以並聯機器人jacobian矩陣的條件數為優化設計的目標函數，提出了基於遺傳演算法的並聯機器人最優運動學性能結構參數優化設計方法，採用實值遺傳演算法，對精調stewart平臺進行了優化設計，得到了最優運動學的精調stewart平臺結構參數，為實現新一代大射電望遠鏡饋源指向跟蹤系統高精度軌跡跟蹤控制奠定了堅實的基礎。
  15. The formulae of the pollution harm rate and the pollution harm index suited to multi - pollutants for the water quality assessment are derived by using the genetic algorithm to optimize the parameters in the formulae

    採用遺傳演算法優化公式中的參數，得到了多種水質污染物都能適用的水質污染損害率和污染損害指數公式。
  16. Furthermore, the study indicated that the genetic diversity of the natural population of reawnuria soongorica increased with the decreasing of the content of organic matter, water, total n and total p in soil, which had some relation with more potentiality of the genetic and variation of reawnuria soongorica in its long - term evolution to adapt worse environment

    經分析表明，無葉假木賊種群與角果藜種群的shannon多樣性指數分別為0 . 1403和0 . 1615 ，基因分化系數（ g _ （ st ） ）為0 . 1469和0 . 1659 ，揭示了兩物種種群遺傳變異多存在於亞種群內，亞種群間的遺傳分化則不明顯。
  17. The data was analyzed with three softwares : tfpga popgene32 and amova155 which are tools for molecular analysis. the percentage of polymorphic sites at species level was 86. 93 %, and they were 83 % 68 % and 80 % at population level. nei " s gene diversity index was 0

    但長葉榧還保留了較高的遺傳多樣性：物種水平的nei氏基因多樣度指數達到0 . 2479 ， shannon信息指數也達到了0 . 3807 ，而其物種水平的多態位點百分率高達86 . 93 。
  18. Simple genetic algorithm gets local minimization too easily and converges slowly. to solve these problems, adaptive crossover rate that has reverse hyperbolic rel ation with the numbers of iteration is designed, and adaptive mutation rate that has reverse proportion to the distances of parents and reverse exponential relat ion to the numbers of iteration is put forward. the practical simulation results show that the adaptive ga has greater convergence speed and larger probability o f getting the best solution

    簡單遺傳演算法存在著收斂速度慢、易陷入局部極小等缺陷.針對這些缺陷，本文設計出隨相對遺傳代數呈雙曲線下降的自適應交換率，並提出與父串間的相對歐氏距離成反比、隨相對遺傳代數指數下降的自適應變異率.實例驗證表明，具有自適應交換率和變異率的遺傳演算法在收斂速度和獲得全局最優解的概率兩個方面都有很大的提高
  19. Dry matter accumulation trends of the each individual organ were predicted under the different condition such as varieties, densities, fertilizer applications and sowing dates

    並以收獲指數作為遺傳參數調節不同品種器官的干物質分配比例，預測不同品種、不同密度、不同施肥、不同播期下各器官的干物質積累動態變化。
  20. In order to solve the problem that there is no theoretic foundation on how to set parameters in ga, this paper presents parameter rules based on analyzing the search ability of ga operators. then, use these rules to analyze an instance of model identification which is based on ga

    本文針對遺傳參數缺乏理論指導的問題，採用簡單的概率分析方法，從遺傳運算元的搜索能力的角度出發，分析了變異運算元作用機理，得出部分演算法參11浙江大學碩士學位論文數的關聯約束。
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