natural selection

natural selection的基本解释

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自然淘汰, [医] 自然选择

相似词

Natural Selection

与natural selection相关的网络例句 [注：此内容来源于网络，仅供参考]

Since they are now beginning to consider the necessity of technical manpower dispatching, the selection of the right temporary help service firms has become a very important issue.In the past, supplier evaluation and selection studies mostly focused on the manufacturing and service industries. Hence, this paper studied the past domestic studies conducted on supplier selection to understand the appropriate selection guidelines that would serve as the fundamental guidelines for the selection of outsourcing manpower companies. The PROMETHEE (Preference Ranking Organization Method for Enrichment Evaluations) proposed by Brans and Vincke in 1985 was used as the supplier selection tool for the study. Finally, we employed a simulated case study where we consolidated the selection guidelines,method and tools to create a reference for future practical applications and academic researches.

在过去，有关于厂商评选的国内外文献中，其研究对象以制造业及服务业居多，针对人力派遣公司评选准则之文献则相当的缺乏，因此，本研究将讨论国内半导体设备供应商评选技术人力派遣公司之准则，藉由过去国内学者对供应商评选之相关研究，寻得适宜的评选准则，以做为评选人力派遣公司之基础，采用由Brans及Vincke在1985年所提出之PROMETHEE（Preference Ranking Organization Method for Enrichment Evaluations）法做为评选供应商之工具，并将此方法藉由Excel应用软体予以辅助计算，最后，使用模拟个案，将研究所提出的评选准则、方法及工具三者结合，提供实务运作及学术研究上作为参考。

Teacher-Student Double Subject Principle is an important precondition for title selection of Chinese Integrated Learning. II. Feasibility Principle is the value of title selection of Chinese Integrated Learning. III. The combination of multi-subject and uni-subject principle is an unexhausted headspring for title selection of Chinese Integrated Learning. IV. The linguistic nature of title selection target is not only the jumping-off place for title selection of Chinese Integrated Learning, but it is also the end-result for title selection of Chinese Integrated Learning.

本文主要运用文献资料与实例相结合的方法，注重于理论与实践的结合，重点探讨了义务教育阶段语文综合性学习的选题指导原则：第一，师生双主体性原则是语文综合性学习选题的前提；第二，可行性原则是语文综合性学习选题的价值所在；第三，开放性与学科性相结合是语文综合性学习选题的重要规则；第四，选题目标的语文性是语文综合性学习选题的出发点，也是语文综合性学习选题的归宿。

As PTDT does in threshold traits, PTDT is valid not only for different QTL effect level, but also for maker with multiple alleles and multiple tightly linked markers.(2) Under an appropriate selection ratio s (in this study, s is 0.2, 0.4, 0.6, 0.8, respectively), the power of PTDT can be improved and the genotying individuals can be decreased using selective genotyping design. However, the power of PTDT is related with population size and population structure, an appropriate selection ratio can be defined by simulation based on the existing data.(3) Among the three transforming methods, mixed-family selection is the best, full-sib selection has same power to mixed-family selection in many parameter combinations, and Estimated Breeding Value selection is inferior to them.

数量性状QTL定位的模拟研究结果表明：(1)数量性状经有效转化后，PTDT对数量性状QTL定位保持了阈性状QTL定位的稳健与高效，对不同效应大小的QTL(10％，30％，50％)PTDT都是一个有效的分析方法；(2)在多等位基因标记、多标记方面，PTDT的检验功效与阐性状分析时一样高效；(3)在合适的选择率下(本研究的分别为0.2，0.4，0.6，0.8，1.0)，选择性基因型测定不仅可以减少基因型测定的数量，而且可以提高PTDT的检验功效，但选择性基因型测定的PTDT检验功效很大程度上与群体大小和结构有关，这个可根据具体情况通过模拟找到一个合适的选择率；(4)三种转化方法的转化效力结果表明，家系内混合家系选择的转化效力最高，家系内全同胞选择次之，估计育种值选择的转化效力较差。

与natural selection相关的网络解释 [注：此内容来源于网络，仅供参考]

natural selection：自然选择

用美陆军有关官员的话说,该系统之所以在诸多选择中最受青睐,是因为"自然选择"(natural selection)的作用. 现在,美海军陆战队正在处理采办该系统的事宜,美空军已采办了12套该系统,而美陆军则已初步采办285套该系统并直接部署到伊拉克. 现在,

natural selection：自然淘汰

1943年他们发表了一篇重要的论文,该论文阐明了:当细菌对病毒体产生抗拒,则这些抗拒态乃是由於突变(Mutation)及自然淘汰(Natural selection)而产生的.

natural selection：物竞天择

我可以向你展示,人类反抗物竞天择(natural selection)的过程中为文明带来的建树,是大得非你可能会同意的. "一八七八年,英国神学家Edward Pusey博士从神学观点批评达尔文的著作>,达尔文在一封信里说,"Pusey博士想像我写>时是针对神学,

natural selection：天择

达尔文最后一句话是告诉妻子说"记着,你一直是一位多么好的太太"看来进化论的共同作者在方面,并未多所著墨.到是日剧有tien: 1.也许是(natural selection)成就了达尔文与达尔文太太埃玛(Emma),

natural selection theory：自然选择学说

克隆选择学说 clonal selection theory | 自然选择学说 natural selection theory | 埃利希侧链学说 Ehrlich side chain theory