genetic selection 中文意思是什麼
genetic selection
解釋
遺傳選育-
The genetic structure has changed due to artificial selection and genetic differentiation index indicated slight differentiation among them
由於人工定向選擇，它們的遺傳結構已經起了一定的變化，分化系數表明它們之間已經產生了分化。 -
A portfolio selection model on copula - garch - evt based and its hybrid genetic algorithm
的資產組合選擇模型及其混合遺傳演算法 -
A side effect of increasing genetic variance following disruptive selection is often greater genetic flexibility of the population.
經分裂選擇后遺傳變量增加的附帶作用，往往使種群的遺傳可塑性有所增加。 -
A side effect of increasing genetic variance following disruptive selection often causes greater genetic flexibility of the population.
經分裂選擇后遺傳變量增加的附帶作用，往往使種群的遺傳可塑性有所增加。 -
Genetic code and genetic computation in natural selection
自然選擇過程中的基因編碼及基因計算的研究 -
In this paper, genetic transformation systems by agrobacterhim rhizogems was established and optimized and high quality regenerating system was selected. the products of indigotin and indirubin in regenerating plantlets had been detected by hplc. the main studies and results were reported as follows : 1 establishment and selection of hairy root clones taken cotyledons of autotetraploid indigoblue woad as explants and hairy roots induced successfully from them by agrobaterium rhizogenes strains a4 and r1000
本文利用發根農桿菌rit - dna建立並優化了四倍體菘藍的遺傳轉化體系，並對再生植株的主要代謝產物靛藍、靛玉紅進行了含量檢測，篩選了優良無性系，也為實現外源抗蟲、抗病等基因的導入奠定了基礎。 -
The advance of the metabolic engineering was briefly reviewed and the application of metabolic engineering methods for the construction of d - ribose - producing genetic engineering strain such as host selection, rate - limited step acceleration, metabolic flow alteration, fermentation process optimization and its application prospects of metabolic engineering was also described
摘要簡要介紹了代謝工程的進展情況，並較為詳細地從宿主的選擇、加速限速反應、改變代謝流和生產過程的優化等方面論述了代謝工程在d -核糖基因工程菌構建方面的應用及其應用前景。 -
The topics include : structure and function of genes, chromosomes and genomes, biological variation resulting from recombination, mutation, and selection, population genetics, use of genetic methods to analyze protein function, gene regulation and inherited disease
主題包括：基因、染色體與基因組的結構和功能；來自於基因重組、突變和篩選的生物變異；族群遺傳學；運用遺傳學的方法分析蛋白質的功能，基因的調控和遺傳性疾病。 -
Also, multi - line balancing problem is discussed, and a new variant genetic algorithm called kpga is proposed. it overcomes the drawbacks of the traditional gas and adopts the so - called coss - kindred selection. the algorithm is verified to be more efficient than the traditional ga and other variant gas
本文還針對多生產線布局問題提出了一種新型的遺傳演算法? ?家族保護遺傳演算法（ kpga ） ，該演算法針對傳統遺傳演算法的制約因數加以改進，採用跨家族選擇和家族內選擇相結合的選擇方式。 -
Based on natural selection, it executes three same and simple genetic operators : selection, crossover and mutation. under the leading of fitness value, it makes an efficient searching in complex spaces until acquiring the best result
它基於自然選擇的原理，通過循環執行相同的、簡單的選擇、雜交和變異三種遺傳操作，並在適應度函數值的引導下對復雜的解空間進行有效地搜索，直到獲得最優的解。 -
It is applicable to various structural distribution networks. while resolving the " large area restoration ", the genetic algorithm execute three same and simple genetic operators : selection, crossing and mutating. it make a self - adaptable and probability overall searching under the leading of fitness value in the whole searching scale until acquiring the best result
在求解網路故障后重構問題時，互動式模糊遺傳演算法通過循環執行相同的、極其簡單的選擇、雜交和變異三種遺傳操作，並在適應度函數值的引導下在搜索空間進行自適應概率性全局搜索，直至獲得全局最優解。 -
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 -
Neutral mutation - - evolution at the molecular level is primarily determined by mutational input and random genetic drift, rather than by natural selection
天然突變- -演化過程中在分子的層次上主要是經由隨機的基因流而決定，並非藉由天擇所影響。 -
E. mollis had higher genetic diversity among populations, and the reason may be as follows : ( 1 ) those populations are generally large and are not subject to significant loss of variation through small - population effects such as random genetic drift and inbreeding coupled with selection
相對於26種長壽木本特有種和61種狹窄的地理分佈種來說，翅果油樹種群也具有高的遺傳變異水平。這表明翅果油樹種群不存在遺傳上的退化現象。 -
The genetic quality of the parents can be judged with much greater certainty than in mass selection.
親本的遺傳品質比起混合選擇來，能判斷得更加確切。 -
Then, an improved genetic algorithm is proposed to solve this problem. this algorithm makes trees with the source and all destinations are the space of operation and filter operation. with hybrid selection operator, competition among brothers, greedy operation, filter operation
然後給出了一種基於遺傳演算法的實時多播路由選擇方法，並用改進的遺傳演算法進行了求解，該演算法採用包含源節點和目的節點的樹作為交叉和變異的空間的方法，通過加入混合選擇、小范圍競爭擇優的交叉變異操作，提高了全局搜索能力和收斂速度。 -
Another thing : the most developed species, like humans and apes, are products of a very specific combination of selection pressures and genetic mutations over millions of years
約翰遜：還有，最先進的物種，比如人類和類人猿，是數百萬年前物競天擇的壓力和基因突變兩者結合作用下的產物。 -
Genetic algorithm ( ga ) is a set of new - global - optimistic search algorithm repeatedly which simulate the process of creature evolution that of darwinian ' s genetic selection and natural elimination
遺傳演算法是模擬達爾文的遺傳選擇和自然淘汰的生物進化過程的一種新的迭代的全局優化搜索演算法，已經廣泛地應用到組合優化問題求解、自適應控制、規劃設計、機器學習和人工生命等領域。 -
Genetic algorithm, as a computational model simulating the biological evolution process of the genetic selection theory of dar - win, is a whole new global optimization algorithm and is widely used in many fields with its remarkable characteristic of simplicity, commonability, stability, suitability for parallel processing, high - efficiency, and practibility. on the other hand, there are many op - timization problems in the field of digital image processing, such as image compression, pattern - recognition, image rectification, image segmentation, 3d image recovery, image inquiry, and or so. in fact all these problems can be generalized as the problem of searching for a global optimal solution in a large solution space, which is the classic application field of genetic algorithm
遺傳演算法是模擬達爾文的遺傳選擇和自然淘汰的生物進化過程的計算模型，是一種新的全局優化搜索演算法，具有簡單通用、穩定性強、適于并行處理以及高效、實用等顯著特點，在很多領域得到了廣泛應用，另一方面，在圖像處理領域有很多優化問題如圖像壓縮，模式識別，圖像校準，圖像分割，三維重建，圖像檢索等等，實際上都等同於一個大范圍搜索尋優問題，而最優化問題是遺傳演算法經典應用領域，因此遺傳演算法完全勝任在圖像處理中優化方面的計算。 -
It can be concluded from the experiment results that hatchery seed has lower genetic variation and large - scale hatchery seed releasing affects the genetic diversity of the natural population. the shrimp distributed along china coast in bohai sea and yellow sea may consist of more than one populations. the viral disease resistant ability of f. chinensis is proved to be genetically inherited and can be improved by genetic selection
一通過對實驗結果的進一步分析認為：中國對蝦人工育苗的過程使後代群體的遺傳多樣性下降，人工培育苗種的大規模放流影響了自然群體的遺傳多樣性； ，分佈於我國沿海的中國對蝦可能由多個自然群體構成，還存在未被發現的種質資源：中國對蝦抗wssv病毒感染是由遺傳決定的，選育可提高中國對蝦對wssv的抗性。
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