樣本方差 的英文怎麼說

中文拼音 [yàngběnfāngchā]
樣本方差 英文
sample dispersion
  • : Ⅰ名詞1. (形狀) appearance; shape 2. (樣品) sample; model; pattern Ⅱ量詞(表示事物的種類) kind; type
  • : i 名詞1 (草木的莖或根)stem or root of plants 2 (事物的根源)foundation; origin; basis 3 (本錢...
  • : Ⅰ名詞1 (方形; 方體) square 2 [數學] (乘方) involution; power 3 (方向) direction 4 (方面) ...
  • : 差Ⅰ名詞1 (不相同; 不相合) difference; dissimilarity 2 (差錯) mistake 3 [數學] (差數) differ...
  • 樣本 : sample book; specimen; advanced copy; sample; muster; scantling; instance; statistics
  • 方差 : dispersion
  1. Besides, this paper adopts the random finite element method, uses geometric and physical mechanical parameters that are relevant to lining weight of surrounding rock, coefficient of lateral pressure, height or buried depth of vertical loading, elastic resistance coefficients of surrounding rock, elastic modulus of support structure, unit weight of concrete, thickness of the structure as well as torsional strength and compression strength of concrete and etc., as random variables, applies the monte - carlo method to sampling by computer, preliminarily evaluates the reliability of bearing capacity and stability of molded concrete lining of the xuefeng mountain tunnel, and obtains the related displacement of the lining, mean value and variance of internal force, and computed the reliability index of lining structures

    此外,文採用隨機有限元法,將圍巖容重、側壓力系數、垂直荷載高度或埋深、圍巖的彈性抗力系數、支護結構的彈性模量、混凝土容重、結構的厚度以及混凝土的抗扭與抗壓強度等與襯砌結構有關的幾何與物理力學參數作為隨機變量,應用蒙特卡洛理論進行計算機隨機取,對雪峰山隧道模注混凝土襯砌的承載力與穩定性的可靠度進行了初步評估,得出了襯砌的相關位移與內力的均值和,並計算出了相應的襯砌結構可靠指標。
  2. Compared with the behavior of macromolecules in real solution system, the adsorption information in the monte carlo simulation system, such as adsorption isotherm, surface coverage, and bound fraction, was studied for discussing its relation to simulation parameters. five - selection simple cubic lattice, self - avoiding walk, and nearest interaction model were used to construct the homopolymer adsorption model on the solid - liquid interface. periodic boundary conditions were used to reduce the fixed error from limited cubic lattice in size

    模擬中採用五選擇簡單立格子上的自迴避行走和最近鄰相互作用模型;使用周期性邊界條件以減小有限大格子空間帶來的系統誤;用鏈節間相互作用能、界面吸附能、體相濃度和鏈長約束體系中的高分子的吸附行為;用末端轉動、 l -翻轉、曲柄運動、蛇形運動和r - r切除-生長法對模擬體系進行擾動;用系統達到吸附平衡后的來研究模擬體系中的高分子鏈在固液界面上的吸附。
  3. If the covariance stationary processes are one dimension, for given data, covariance function and spectral density function can be estimated, and there is no need to select kernel function and its parameters

    如果協平穩隨機過程的狀態是一維的,對給定的點,給出了協函數的估計和其對應譜(密度)函數估計,而不必選擇核函數及其參數。
  4. For the given sample points, and matrix formed by covariance function with sample points as parameters, when the number of sample points approaches infinite, it is proven that this matrix spectrum will approach the spectral approach theorem for positive - definite kernel of integral equation

    對給定的點,由點為變量的協函數構成的矩陣,當點個數趨于無窮大時,證明此矩陣譜逼近於積分程正定核的譜逼近定理。
  5. New genetic changes has appeared in the selected shrimp generation, at the same time, no generation - specific bands were found. in addition, genetic variation among g2, g3 w1, hg were estimated by aflp and sampl, as shown in the umpga dendrogram, g2, g3, g4 were clustered into one group, and then g3, g4 were clustered. whether the data from aflp and sampl were calculated together or respectively, the results were similar with only a little difference from aflp

    另外,應用aflp和sampl對g2 、 g3 、 g4 、 w1及一個日照養殖群體hg進行了比較,將aflp 、 sampl條帶統計到一起聚類分析顯示g2 、 g3 、 g4聚為一支與w1與hg的聚合支首先分開, g3 、 g4再聚為一支與g1分開,顯然g2 、 g3 、 g4聚合趨勢與上述sampl分析結果相似;除aflp 、 sampl條帶統計到一起計算外,對上述g2 、 g3 、 g4 、 w1 、 hg相同的aflp 、 sampl條帶分別進行了運算,可以看出兩種法結果相似,單一技術計算結果與兩者聯合處理結果相似,但aflp條帶經popgene軟體處理所得umpga系統樹卻有所別。
  6. It has been maked for immediate and statistical analysis that the calculation about the work order parameter of the base - bleed - rocket is calculated in the taguchi method, its influencing trend is bring out in the open, the theoretical base is settled for confirming the greatest combination about the work order parameter of the base - bleed - rocket. the multi - objectile optimal design model is established that the indexes have been taked into account first and synthetically, such as physical parameter range lethality power strength and flight stability and so on, the program is compiled and the example is calculated. the true worth of the theoretical work in this paper is validated by flight experimentation of 130mm hybrid base - bleed - rocket extended - range principium projectile

    文進行了底排?火箭復合增程彈工作時序參數正交試驗設計的直觀分析與分析,揭示了每個參數對射程計算的影響趨勢,為進一步確定底排?火箭工作時序參數值的最佳匹配組合奠定了理論基礎;建立了底排?火箭復合增程彈多目標優化設計模型,該模型首次綜合考慮了底排?火箭復合增程彈的結構特徵參量、結構強度性能、飛行穩定性、威力性能和射程指標,編制了相應的分析程序,進行了算例計算;完成了130mm底排?火箭復合增程原理彈的結構設計與飛行試驗,其試驗結果驗證了文理論研究工作的實際應用價值。
  7. The specific research methods include : the reliability and validity of the scale ( cronbach ’ s of the scale, split - half reliability, the reliability of each dimension, discriminant validity, convergent validity ) ; the factor analysis method to get the dimensions of internal service quality ; the independent - samples t - test and paired - samples t - test method to analyze every discrimination of internal service quality ; the comparison of means to evaluate the sequence of every dimension

    具體的研究法包括:對量表進行信度和效度分析,包括整個表的cronbach系數、分半信度、各維度的信度、區別效度和收斂效度的分析;使用因子分析的法測量內部服務質量包含的維度;採用兩獨立的t檢驗和兩配對的t檢驗的統計法對內部服務質量各距進行分析;通過對均值的比較,分別得出各維度在員工和管理者心目中的重要性排序。
  8. It is especially attractive for the downlinks and suppressing intercell mai. when multiuser detector is adapted in blind mode, it usually adopts eignvalue decomposition or singularvalue decomposition of received sample correlation matrix and tracking alrithgms, which result in high computational complexity. at the same time, approximation computation in tracking alrithgms also result in slow convergence

    為實現盲自適應檢測,通常採用對接收信號矩陣進行特徵值分解( evd )或奇異值分解( svd )后進行跟蹤,由此帶來的子空間秩跟蹤使得實現復雜度很高;另一面,在跟蹤演算法中考慮一些實際情況而作出近似處理,從而引起誤積累和正交性誤,導致每次跟蹤開始階段跟蹤速度變慢。
  9. Through the theory of light radiation and intensity, we can use the fewest leds to satisfy the luminous intensity demand. through image segmentation theory, we can accurately pick module up from the test stripe when it is put in wrong directions. through image processing theory, we can acquire correct information and avoid the bad effects from the asymmetric chemistry reaction and instability of the devices

    用光的輻射和強度理論,我們計算出了獲得足夠圖像強度所需的最少光源;用圖像分割理論,我們在試紙條傾斜放置或有垂直向上的偏移時,準確地提取出了各模塊的數據;用平滑濾波和均值濾波理論,我們濾除了由於反應不均勻及硬體設備不穩定帶來的噪聲;用交遇區設計線性分類器的法,我們降低了有限設計線性分類器帶來的誤,提高了檢驗準確度。
  10. First, this paper gives an introduction of some methods of unequal probability sampling, their estimators and variance estimators, including sampling with pps with replacement, methods of sampling without replacement suggested by brewer, durbin, sampford, des raj, murthy, rao - hartley - cochran. then, at the basis of rao and bayless ' s study, we consider that population can be splited two random subpopulations, which are respectively drawn from different infinite super - populations, and compare the stabilities of estimators of the methods that given above. we find that the minor difference between two super - populations has great effect on the efficiency of the estimators for the population with moderately large coefficient of variation ( c. v. )

    文首先從理論上介紹了若干種不等概率抽法,它們的估計量、估計量的及其估計,其中包括有放回ppz及pps抽,不放回不等概率抽中的brewer 、 durbin 、 sampford 、 desraj , murthy 、 rao - hartley - cochran等人的法;其次,在rao和bayless兩人就單元數n = 2的情形對上述抽法進行比較的基礎上,將總體隨機地分成兩個子總體,視每個子總體取自不同的線性超總體,在文中,我們利用計算機實現隨機分組,並通過畫圖比較各法估計量的穩定性,結果表明,對變異系數c . v . ( x )較大的總體而言,兩個超總體之間的微小異將對估計量的穩定性產生很大的影響,從而說明rao和bayless的比較結果還不夠完善。
  11. Chapter four makes some suggestions to china ' s future multinational operations. with china ' s entry into wto, chinese enterprises will face competition both at home and abroad. it requires joint efforts from governments and enterprises to implement " go - international " strategy : 1 ) to reform administrative mechanisms of governments and enterprises, 2 ) to fulfil scale effects by establishment of enterprise groups, 3 ) to increase international competitiveness by reasonable utilization of domestic and foreign resources, 4 ) to improve product design and promotion, 5 ) to set up explicit strategic goals in multinational investment, 6 ) to develop talents, 7 ) to enhance technology and develop integrative advantages, 8 ) to take flexible ways to enter foreign markets, 9 ) to implement diversification strategy

    實施「走出去」戰略需要政府和企業兩面的共同努力,中國企業跨國經營的發展首先是要改革政府管理體制和企業的經營機制,這是中國企業跨國經營發展的根所在;同時要促進跨國企業的集團化以尋求規模效應;要善於發掘自身的技術和資源優勢,實現內外資源合理配置,提高國際競爭力;要改進產品設計和宣傳,突出產品別優勢;要有明確的跨國戰略投資目標;要注意培養高素質的跨國經營人才;要提高科技水平,增強企業綜合實力,而不能僅靠勞動力等面的傳統優勢;在進入戰略上也應因地制宜採取靈活多式;同時要實施多元化的跨國經營戰略。
  12. The montane elfin forest could be divided into 5 kinds, samples of nearby sites had strong comparability, the more close the place was, the more similar vegetation type and environmental factor were, the smaller the difference of the sample was

    山頂矮林可劃分為5類,的相似基與取的地點相一致,地點越相近,植被類型和環境因子越相似,異性越小。
  13. In views of hebei province ' s existing situation of rural economy, and with reference to the civil and abroad achievements in scientific research on the field, this thesis choose two sample groups - 11 cities and 138 counties of hebei province in light of division into districts and analyses the rural economy difference of hebei by using total and mean index, the social product gross of rural, rural labor productivity, the mean net income of rural, and methods of variation coefficient, comprehensive index and so on.

    針對河北省農村經濟發展的現狀,文借鑒國內外區域經濟異的有關研究成果,以現行行政區域為基礎,通過截取河北省11個地市和138個縣(市)兩組不同的,選取總量指標農村社會總產值,人均指標農村人均社會總產值、農村勞動生產率、農民人均純收入,運用變異系數、綜合指數等法對河北省農村經濟的異進行分析。
  14. Deviation control method to samples of number of eggs in percentage of good eggs of silkworm, bombyx mori

    桑蠶種良卵率調查中間卵粒數的偏控制
  15. Moreover, the fuzzy clustering discriminate analysis method for distinguishing and eliminating the gross error of the measurement sample is established. the gross error of the practical measured data is distinguished by use of the method prove the established the gross error distinguishing model practical to the measurement system

    建立了測量粗大誤判別和剔除的模糊聚類判別法,通過對實際測量數據的粗大誤判別,證明了所建立的粗大誤判別模型對測量系統的實用性。
  16. The paper accounts the importance and the necessity of the forecasting research to the stock return volatility of our country, and the use in practice of the forecasting about the stock return volatility, firstly, stock market of our country is divided into large scale stock 、 middle scale stock and small scale stock on the basis of stock size. secondly, according to the basic method of the mathematical statistics , the behavior of the return volatility about single stock is described by using the model of the rolling variance estimates 。 through the relation of daily returns volatility and weekly returns volatility and the forecasting accuracy of the volatility forecasting model to various stock scale , we do practical analysis with the forecasting research to return volatility of single stock market

    在個股收益波動性的可預測性研究面,首先按市值規模大小將我國股票分為大盤股、中盤股和小盤股,然後利用數理統計的基法,用滾動樣本方差估計模型描述個股市場收益波動性的行為,並對三種股票日收益率序列及周收益率序列波動之間的關系以及波動預測模型對各種股盤的預測準確性進行了實證分析和結果檢驗。
  17. We empirically test the return serial correlation of shanghai stock market under the vr ( variance ratio ) test framework. we suggest that the test results of index and individual stocks are consistent with the exist results. the index return is positive serial correlation and individual stocks returns are weakly negative serial correlation

    2 .我們使用高頻交易數據,在比檢驗的框架下檢驗了上海證券市場收益率的序列相關性,我們發現在市場指數和個股面的檢驗結果與以往的研究結果存在一致性,即指數收益率存在正序列相關性,而個股收益率存在弱負序列相關性。
  18. And then, adopting the same model, cyclic moment estimation statistic of different orders are constructed respectively, large sample variance expressions of the estimator through theoretic analysis are derived, as well as the constraint relation of estimator performance and noise statistical characteristic. the curve of estimation performance is obtained through monte carlo simulation test, which proves the related conclusion derived

    然後,論文同以加性和乘性噪聲聯合干擾下的復諧波信號和復線性調頻信號為觀測模型,分別構造了基於不同階次的循環矩估計量,從理論上推導出了估計量的大樣本方差表達式,分析了估計量性能與噪聲統計特性的約束關系,通過monte - carlo模擬試驗得到了估計性能的曲線,驗證了推導的有關結論。
  19. The statistical result shows that the average precision of rainfall intensity is over 80 % which varies largely with rainfall intensity grades using infrared cloud imagery parameters and the size of analysis field has slight effect on it. the monthly model make less improvement on p

    對預測程檢驗的結果表明:利用紅外資料估算未來6h的降雨量其總體的平均正確率為80以上,但是在分級別很大,這對小區域短時降雨預報具有很好的參考價值。
  20. The analysis of how the training model influenced the students " thinking ability, creativity and study performance is done by using a few statistical methods including analysis of double samples " variance, supposition of double sampling, testing of significant difference

    運用雙樣本方差分析,雙假設、異顯著性檢驗等幾種統計法,分析了六階段思維策略訓練的課堂操作模式對學生思維能力、創新意識、學習成績的影響。
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