random samples 中文意思是什麼
random samples
解釋
隨機樣品-
And l. mollis hemsl, a random amplified polymorphic dna ( rapd ) analysis was performed for the first time. the screening of 40 decamer oligonucleotides allowed the selection of 11 primers used for the analysis, the dna fingerprints of 10 samples were constituted and the genetics evidence was furnished. to study on the contents and chemical constituents of essential oil from leaves and fruits of different species of litsea lam, the chemical compositions were separated and identified by gc / ms
為了評價山雞椒和毛葉木姜子的不同品種和品系，採用rapd技術，從40個引物中篩選出11個特徵引物，首次獲得山雞椒和毛葉木姜子以及它們的栽培品系的dna分子指紋圖譜，從分子水平上較全面地評價了各樣品間的親緣關系，從而為栽培品種的劃分提供了一定的遺傳學上的證據。 -
Random amplified polymorphic dna ( rapd ) reactions were performed on the total 27 samples including 23 accessions mentioned above ( no. 1 - 21, 26 ~ 27 ), 1 accession of lchinense var. semper - rubrum ( no. 22, another variety of lchinense }, 1 accession from a branch with green leaf white flower on a plant which has the similar morphological trait with no. l ( no. 25 ), and 2 accessions of lchinense ( no. 23 ~ 24 )
對27個材料包括： 23個紅?木變異類型， 1個長紅?木（ loropetalumchinensevar . semper - rubrum ）材料? ? ?木的另一變種， 1個采自與1號形態類似的紅?木植株上的綠葉白花的變異枝條，以及2個原種?木材料做了隨機多態擴增dna （ rapd ）分析。 -
Samples are divided inio two equal teams including experimental team and controlling team at random. this study is to make sure that wheather exploratory teaching - method has an advantage over traditional teaching - method in junior - middle - school physical experimental teaching. the results of this experiment are follows : 1 ) exploratory teaching of small items in junior - middle - school physical experiment can obviously arouse students " learning interests in physical experiment
本實驗採用單因素等組實驗設計，考察教學方法（探究性教學方法和傳統教學方法）對初中物理實驗教學的影響。實驗結果顯示： 1 、初中物理實驗小項目探究性教學能顯著提高學生學習物理實驗的興趣。 -
Random probability samples
隨機概率抽樣 -
A modified genetic algorithm ( mga ) framework was developed and applied to the flowshop sequencing problems with objective of minimizing mean total flowtime. to improve the general genetic algorithm routine, two operations were introduced into the framework. firstly, the worst points were filtered off in each generation and replaced with the best individuals found in previous generations ; secondly, the most promising individual was selectively cultivating if a certain number of recent generations have not been improved yet. under conditions of flowshop machine, the initial population generation and crossover function can also be improved when the mga framework is implemented. computational experiments with random samples show that the mga is superior to general genetic algorithm in performance and comparable to special - purpose heuristic algorithms. the mga framework can also be easily extended to other optimizations even though it will be implemented differently in detail
提出了一個改進遺傳演算法的結構，並且應用於帶有目標是最小平均總流程時間的流水調度排序中.為了改進一般遺傳演算法的程序，兩個新的操作被引進到這個操作中.這兩個操作為： 1 ）過濾操作：過濾掉在每一代中的最壞的個體，用前一代中的最好的個體替代它； 2 ）培育操作：當在一定代數內演算法不改進時，選擇一個培育操作用於培育最有希望的個體.通過大量的隨機產生的問題的例子的計算機實驗顯示出，提出的演算法的性能明顯好於一般遺傳演算法，並且和此問題的最好的專門意義的啟發式演算法相匹配.新的mga框架很容易擴展到其它最優化當中，只是實施的詳細的步驟有所不同 -
By sun, bo ( major : marine biology ) directed by professor zhang, guofan and dr. liu, xiao population genetics of four argopecten irradians cultured populations was analyzed by using random amplification polymorphism dna ( rapd ) techniques. and partial dna sequences of the internal transcribed spacers ( its ) from four representative samples ( one sample represent for each population ) were amplified by pcr and sequenced in order to stress the phylogenetic relationships of the four populations. besides, by rapd technique, two argopecten irradians families were studied to examine whether the hybridization experiments were successful and which family was more suitable to be materials in future genetic linkage map construction
本文以海灣扇貝4個養殖群體為研究對象，採用隨機引物多態性dna （ rapd ）技術進行了群體遺傳學研究，並嘗試使用4個群體中代表個體的內轉錄間隔區（ its ）序列比對分析結果作為參考；另外，本文還運用rapd技術對人工異體交配的2個海灣扇貝家系的雜交成功率進行了分析，均獲得成功證實，並評估了兩個家系構建遺傳連鎖圖譜的潛力。 -
Noise - the shadow samples are offseted from each other in a pseudo - random way, which artificially soften the borders of the shadows
噪聲陰影采樣值的間值呈偽隨機數序列，將逼真地模擬陰影的邊界。 -
3. we will send some samples to you if you have further requirements. the samples should be taken in random
3 .如果您有進一步要求，我們將寄樣品給您，樣品將採取隨機抽取的辦法。 -
Abstract : a fuzzy and random method for estimating the three parameters ofweibull distribution was put forward. the method was tested and verified by the random samples obtained by monte carlo method. and the results showed that the estimating values of the parameters are close to the theoretical value
文摘:提出了威布爾分佈三參數估計的模糊?隨機方法，並對蒙特卡羅方法產生的隨機樣本進行了驗證；結果表明，求得的參數估計值十分接近理論值。 -
Sampling methods for common distributing random numbers and the samples of random fields are proposed. combining the monte - carlo simulation technique with the one - dimensional discretization finite element method, the monte carlo - finite element method for stochastic analysis and the reliability computation of thin - walled box girders are proposed in this thesis
建立了幾種常用分佈隨機數以及隨機場隨機樣本的產生方法；將蒙特卡羅數值模擬與薄壁箱梁一維離散有限元法相結合，提出了薄壁箱梁隨機分析和可靠度計算的蒙特卡羅有限元法。 -
And that, while the training samples is few and there is random error, ann is much better than ordinary statistical models. generally speaking, while the tourism demand statistical data is for a short period time, and tourism demand is disturbed by many unpredictable factors, ann is a more superior model
一般而言，旅遊需求統計數據時間較短（也就是說可供「學習」的訓練樣本小） ，而且旅遊需求還受到眾多不可預知因素的干擾，所以在進行旅遊需求預測時用神經網路是一個比較優越的模型分析方法。 -
Based on the theory of measurement and statistical estimate, this paper furnish three kinds of estimate algorithms : median estimate ( me ), 3 a confidence distance estimate ( 3 a cde ) and confidence distance estimate based on bayes ( cdebb ). the monte carlo digital simulations are applied on the me, 3 a cde and cdebb with the random normal samples & outlier samples
論文運用測度論和估計理論，探索了可應用於引信決策的中位數估計、 「 3 」置信距離估計和基於bayes的置信距離估計三種穩健估計演算法，並結合構造的隨機正常值樣本、隨機異常值樣本，用蒙特卡羅法分別對該三種演算法進行了數字模擬驗證。 -
Time domain noise is simulated by the mathematical pseudo uniform or normal random variable and coupled to deterministic signals such as rectangular ( rect ), triangular ( tria ), unit step exponential ( uexp ), even exponential ( eexp ), or gaussian ( gauss ) pulse voltages in finite number of time samples in finite time period
用數學類真均勻或常態隨機變數模擬時域雜訊，與定然時域訊號如，方形、三角、指數遞減、或高斯等電壓脈波在有限時域?圍之有限個時域取樣結合。 -
Based on mpt, the author analyses a fund investment principle, uses equal proportion model on random samples to make a fund - portfolio, demonstrates the rules that fund - portfolio investment risk changes along with the investment size and suggests a rational size for fund - portfolio investment
摘要本文根據組合證券投資理論論述了基金組合投資的原理，使用隨機簡單等權模型對基金樣本進行組合，實證分析了基金組合投資的風險隨組合投資規模變化的規律，並指出了對我國基金進行組合投資的合適規模。 -
Then in this paper the author establishes the simulation model of the probability of smashing the submarine when the segregator of the submarine launched missile carrier sinking in the water and uses the monte carlo ( of or relating to a problem - solving technique that uses random samples and other statistical methods for finding solutions to mathematical or physical problems. ) to simulate the whole process. then the author carrier through much simulating computations and gives the smashing probability at different conditions
在對分離體下沉的各種干擾因素進行了深入的分析后，建立了基於蒙特卡羅方法的潛射導彈運載器分離體砸艇概率的計算模型，並且進行了大量的計算機模擬試驗，分別對運載器採用平面彈道，偏航彈道在不同發射深度，不同發射艇速的情況下的分離體砸艇概率進行了模擬計算，給出了不同情況的砸艇概率。 -
The study used a stratified random sampling method to look at 2159 junior high school students from 22 schools of 6 counties of northern taiwan, as well as 475 inmates of juvenile correctional institutions ; thus there were a total of 2634 samples
在幫派入侵校園部分，樣本反映出校內常有幫派分子活動，少數學生反應受到幫派學生的侵害，約有11 %的學生指出，恐懼校內外幫派分子之侵擾。 -
Chapter 5 is focused on the studies on the equivalent conditions for maximum value convergence of sums of independent random matrix sequences, and the sufficiency condition of the strong consistency of m estimator of regression parametric in linear model for negatively associate samples, thus enriching and strengthening the results of a series of papers
第五章得到了獨立陣列和（含加權和）的最大值完全收斂的等價條件，從而豐富和強化了前人的一系列結果獲得了負相關樣本線性模型中回歸參數m估計是強相合的較弱的充分條件 -
The dissertation has used the methods of selecting the samples at random and collected 165 samples that are available
研究以蘇州地區私營企業為對象，通過隨機抽樣的方式，獲得有效問卷165份。 -
The instantaneous probability density function of the virtual stochastic process is evaluated, and then the probability density function of the basic random variable is obtained by employing the independent random samples
利用獨立隨機抽樣的樣本值，即可獲取虛擬隨機過程的瞬時概率密度函數，進而獲得隨機變量的概率密度函數估計。 -
Some retailers pull 3 - 4 random samples from each product group
一些零售商隨機從每批產品中抽取3 - 4件樣品。
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