隨機母體 的英文怎麼說

中文拼音 [suíjīmǔtǐ]
隨機母體 英文
random population
  • 隨 : Ⅰ動詞1 （跟; 跟隨） follow 2 （順從） comply with; adapt to 3 （任憑; 由著） let （sb do as he li...
  • 機 : machineengine
  • 母 : Ⅰ名詞1 （母親） mother 2 （泛指女性長輩） one s elderly female relatives 3 （配套的兩件東西里的凹...
  • 體 : 體構詞成分。
  • 隨機 : random stochasticrandom
  • 母體 : 1 （孕育幼兒的人或雌性動物的身體） the mother s body; the （female） parent; parent body 2 [原子...
  1. Twenty f1 combinations crossed among 5 varieties and strains different in fiber properties according to complete diallel crossing design were used to evaluate the heterosis and gene action of boll weight and lint percentage in high quality fiber property varieties in upland cotton in 1998 1999 for two year successively at nanjing. it was indicated that there existed small interactions with the environmental factors without maternal effects and the additive gene effect was in chief, attaining to 51. 2 % and 65. 4 % respectively for boll weight and lint percentage. the dominant effect was also in higher rate, 32. 6 % and 16. 8 % respectively. the population mean heterosis of boll weight and lint percentage over the mid - parental mean were relatively prominent 13. 3 % and 3. 5 % respectively in extreme significance. however, boll weight showed no significantly surpassing parental f1 heterosis over the better parent based on population mean ( 2. 0 % ) ; while the lint percentage expressed significant negative heterosis value ( - 2. 1 % ). the gene actions were in conformity with the heterosis expression. it was shown clearly that the f1 combinations crossed between parents with similar performances had relatively high dominant effects and significant positive f1 surpassing parental heterosis ( f1 heterosis over the better parent ) ; while no f1 combination crossed between the parents with prominent mutual difference surpassed the higher parent in yield components, which indicated that among those parents with less difference and close relationships, there still existed sufficient genetic variation or certain mechanism for creating variation and achieving greater advances in breeding. correlation analyses also indicated that there still existed severely undesirable negative correlation between yield and fiber properties as well as the difficulties for their simultaneous improvements

    利用5個具有不同纖維品質性狀的品種（系）配製完全雙列雜交組合20個，通過親本和f1的2年隨機區組試驗發現產量性狀的鈴重和衣分與環境的互作效應小，不存在母體效應，並以加性遺傳效應為主，分別占表型方差的51 . 2 %和65 . 4 % ;顯性遺傳效應所佔的比率也較高，分別為32 . 6 %和16 . 8 % .鈴重和衣分的群體平均優勢較大，分別為13 . 3 %和3 . 5 % ，達到了極顯著;鈴重的超親優勢為2 . 0 % ，不顯著;衣分為顯著的負值（ - 2 . 1 % ） .遺傳分析與雜種優勢結果一致.具體表現在產量性狀上，親本相當配製的組合雜合顯性較高，其超親優勢正向顯著，而極值親本（差異較大）所配組合沒有超過高親的.這表明親本差異小、親源關系較近的親本中仍然存在足夠的遺傳變異或某種機制以創造變異使育種取得更大的進展.相關分析表明了仍然存在嚴重的品質與產量的負相關，遺傳改良的難度較大
  2. In this paper, we build three 3d finite - element models including mother rock body, hard inclusions and randomly distributed cracks and computed the stress distribution within the mother body and hard inclusions

    摘要建立了含有母體巖石、硬包體和隨機分佈的小裂紋的三維有限元模型，計算了包體和各層實體中的應力分佈。
  3. In this paper, the repairable queuing system with police is studied. some important queuing quantities and reliability quantities are in detail discussed as follows : ( 1 ) using the renewal process theory and the method of stochastic decomposition, both the transient and equilibrium distributions of the queue length from any state are discussed, and the recursion expression of the equilibrium distribution is given by furthermore, the generating function of equilibrium queuing length distribution is given by ( 2 ) the distribution of waiting time is discussed, and the mean waiting time is given by ( 3 ) the departure of the system is discussed, and the mean value of departure customers when is given by

    具體如下： （ 1 ）利用更新過程理論和隨機分解方法，討論了從任意初始狀態出發隊長分佈的瞬態解和穩態解，得到了隊長平穩分佈的遞推公式：並進一步求得了系統的穩態隊長分佈的母函數（ 2 ）討論了穩態等待時間分佈，求得了平均等待時間： （ 3 ）討論了系統的輸出過程，求得了長期單位時間內離去顧客的平均數： （ 4 ）討論了服務臺的不可用度，得到了穩態不可用度: （ 5 ）討論了內服務臺平均故障次數，求得了長期單位時間內的平均故障次數
  4. With the development of the electrical power enterprise and computer technology, it is important to design a highly efficient ， better maintainable and graphic interface based software package for power system analysis and computing in the paper ， the author put forward a kind of new sensitivity analytical method which take into account load characteristic to fix on the weak bus, and with example to prove the exactness of the algorithm ; developed the visual electrical power system analysis and computing and graphic sporting system, the software package was developed by using the idea of object oriented programming ， the method of class ' s inheritance ， polymorphism and virtual function, and set up equipment - chart element - the interreaction between class this make it easy to expand, maintain and replant

    隨著電力事業和計算機技術的發展，研製高效率、可維護性強、具有良好用戶界面的圖形化計算分析軟體成為電力系統分析計算研究的重要任務之一。本文提出了一種計及負荷特性的靈敏度分析方法來對薄弱母線進行確定，並用算例驗證了演算法的正確性；開發了圖形化的電力系統分析計算軟體和圖形支持系統，該軟體完全採用面向對象的設計方法，充分利用了類的繼承、多態性質和虛函數的方法，建立起設備圖元類之間的相互關系，使軟體具有高度的開放性、可維護性、可移植性。
  5. The major tasks include : ( 1 ) expand the schema theorem for ga. the schema theorem with binary coding advanced by professor holland is expanded to limited integer, letter, floating point numbers the number of which value is limited, and their hybrid coding. ( 2 ) put forward replacing by the excellent chromosome ga ( recga ), superiority colony first ga ( scfga ) and improve the ga ; ( 3 ) make probability convergence analysis of recga using the theory of markov chain, random process ; ( 4 ) make convergence analysis of scfga using the principle of contractive mapping in functional analysis theory ; ( 5 ) design the test programs ( cap ) to resolve np problems ( course arrangement ) with gas ; based on recga, modify the arithmetic and then conduct tests

    主要有以下幾方面工作： （ 1 ）將二進制編碼遺傳演算法的模式定理擴展到由有限整數、字母或取值個數有限的浮點數編碼，或它們混合編碼的遺傳演算法范圍； （ 2 ）提出最佳個體替換策略遺傳演算法（ recga ） 、優勢群體優先策略遺傳演算法（ scfga ） ，對遺傳演算法進行改進； （ 3 ）使用隨機過程理論markov鏈對recga進行了收斂性分析； （ 4 ）使用泛函分析理論壓縮映射原理對scfga進行了收斂性分析； （ 5 ）使用遺傳演算法設計了解決np類問題（排課問題）的測試程序（ cap ） ，並根據recga對演算法進行改進並進行測試。
  6. Two kinds of simulation model to calculate the hitting probability of cargo - projectile are built up, which are the direct simulation of firing errors of cargo - projectile and the simulation of firing errors combined with numerical integretion. specific method to calculate the hitting probability of both round and rectangular aim are given, so are the generation of normal distribution vector and uniform distribution vector

    給出了對圓形目標和矩形目標的具體計算方法，以及正態分佈隨機向量和均勻分佈隨機向量的產生方法，根據算例的結果，討論了子彈重迭度對子母彈首發命中概率的影響。
  7. The mutant pel - d92l was expressed in pichia pastoris gs115, sds - page detection showed that the expression product pel - d92l - gs is different from pel - gs, and its " yield decreased dramatically, the themostability of pel - d92l - gs is also different from the pel - gs, but their optimum temperatures are same. 3. directed evolution of pel through random mutagenesis mutagenesis pcr carried out in error - prone conditions was used on the vector psk - pel, using the oligos " beginning " and " end ", homologous to the 5 ' and to the 3 " ends of the gene of pel respectively

    三、 pel基因的隨機誘變用易錯pcr方法對pel基因進行隨機誘變， pcr產物與ppic3 . 5k連接，轉化大腸桿菌，獲得的混合質粒電轉化畢赤酵母gs115 ， omm平板篩選適于低溫或對熱穩定的重組子，篩選獲得一株最活反應溫度、熱穩定性、發酵酶活均有提高的突變體pel - ep5 - gs ，其最活反應溫度為45 ，比野生型高出5 ； 40處理30min殘留活性為56 ，大大高於野生型的6 ；初始ph7 . 3528條件下培養72h ，發酵上清酶活為325u / ml 。
  8. Through literature review and case studies of six firms headquartered in taiwan, the study has the following findings : ( 1 ) a parent firm tends to adopt more formal control mechanisms when its levels of internationalization are low and when a subsidiary serves the role as a production site ; ( 2 ) a parent firm tends to lower the adoption of formal control mechanisms, when its levels of internationalization are low and when a subsidiary serves the role as a selling unit ; ( 3 ) increasing levels of internationalization leads to the adoption of more informal control mechanisms by a parent firm, in addition to the intensive usage of formal control mechanisms ; ( 4 ) when a subsidiary relies more on the headquarters for resources, a parent firm tends to adopt more formal control mechanisms ; ( 5 ) when a subsidiary relies less on the headquarters for resources, a parent firm tends to increase the usage of informal control mechanisms ; ( 6 ) when the organizational culture encourages innovation and communications, a parent firm tends to adopt more informal control mechanisms ; ( 7 ) when the culture of a host country is characterized by collectivism, a parent firm tends to adopt more formal control mechanisms ; and ( 8 ) unstable local industrial environment leads to more usage of informal control mechanisms by a parent firm

    本研究以個案研究法，經分析六家廠商，對于母公司採用的控制機制有下述結論： （ 1 ）當母公司國際化程度較低，且海外子公司以生產為主要活動時，母公司傾向高度使用正式化控制機制； （ 2 ）當母公司國際化程度較低，且海外子公司以銷售為主要活動時，母公司傾向降低使用正式化控制機制； （ 3 ）隨母公司國際化程度的提高，母公司除了高度使用正式化控制機制外，亦傾向增加使用非正式化控制機制； （ 4 ）當子公司對母公司的資源依賴程度愈高時，母公司傾向高度使用正式化控制機制； （ 5 ）當子公司對母公司的資源依賴程度愈低時，母公司傾向增加使用非正式化控制機制； （ 6 ）當母公司文化鼓勵創新與溝通時，母公司傾向高度使用非正式化控制機制； （ 7 ）當地主國文化呈現集體主義時，多國公司傾向高度使用正式化控制機制； （ 8 ）當地主國產業競爭環境不穩定時，多國公司傾向高度使用非正式化控制機制。
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