非負值 的英文怎麼說

中文拼音 [fēifùzhí]
非負值 英文
nonnegative value
  • 非 : Ⅰ名詞1 （錯誤） mistake; wrong; errors 2 （指非洲） short for africa 3 （姓氏） a surname Ⅱ動詞1 ...
  • 負 : Ⅰ名詞1 （負擔） burden; load 2 （虧損） loss 3 （失敗） defeat Ⅱ動詞1 [書面語] （背） carry on th...
  • 負值 : negative value; negative
  1. We make the following assumption for when 2 is positive definite matrix, different estimators about matrix of regression coefficients and inefficiency of least squares estimate have been discussed in many documents. considered 2 is nonnegative definite matrix, this thesis derives best linear unbiased estimate of parameter matrix b and estimable parameter function kbl under the meaning of matrix nonnegative definite and the property of maximum probability of blue is investigated. next, we discuss some necessary and sufficient conditions of the equality of the lse and blue, then we derive the estimation of the deviation bet - ween the least squares and the best linear unbias estimators of the mean matrix, meanwhile a relative efficiency of lse ofb is proposed and its bound is given

    當0時，眾多文獻討論了回歸系數陣的各種估計及lse的有效性，本文考慮了當0的情形，給出了回歸系數陣b及其可估參數函數kbl的在矩陣非負定意義下的最優估計（ blue ） ，研究了它的一個最大概率性質，並且討論了最小二乘估計成為最佳線性無偏估計的充分必要條件，在此基礎上給出了均值矩陣的最小二乘估計與blue的偏差估計，定義了lse相對于blue的一個相對效率，並給出了它的界。
  2. Chapter 3 consider the initial - boundary value problem utt - where q is a bounded demain in rn with smooth boundary 3q ; with m ( s ) is a nonnegative c1 - function for s > 0 satisfying with we show that under certain conditions the solution blow up in finite time. chapter 4 consider the initial - boundary value problem and < ? > 2. we show the decay rate of the solutions of the equation

    第三章我們考慮了定義在具有光滑邊界的有界區域上的kirchhoff型方程初邊值問題其中0 ， r ， p 1 ， q 1 ， 1 ；當s 0時， m （ s ）是空間c ~ 1中的非負函數，且滿足其中， 0 ， 2這章我們給出了上述方程解的有限時刻爆破條件。
  3. The value specified must be either a non - negative integer, or - 1

    指定的值必須是非負整數或- 1 。
  4. This is a nonnegative integer

    。該值是非負整數。
  5. This paper applies generalized multipler method to translate convex quadratic programs with equal constraints and non - negative constraints into simple convex quadratic programs with non - negative constraints. the new algorithm is gotten by solving the simple quadratic program. it avoids the computation of inverse matrix and exploits sparsity structure in the matrix of the quadratic form. the results of numerical experiments show the effectiveness of the algorithm on large scale problems

    根據廣義乘子法的思想，將具有等式約束和非負約束的凸二次規劃問題轉化為只有非負約束的簡單凸二次規劃，通過解簡單凸二次規劃來得到解等式約束和非負約束的凸二次規劃新演算法，新演算法不用求逆矩陣，這樣可充分保持矩陣的稀疏性，用來解大規模稀疏問題.數值結果表明：在微機486 / 33上就能解較大規模的凸二次規劃
  6. The results show that the industry factor, the company size and the proportion of non - debt tax shields have a remarkable effect on the choice of capital structure, while the multiple of interest safeguard and the proportion of asset collateral value do not have an obvious effect on the asset - liability ratio

    結果表明：行業因素、公司規模和非負債稅盾比例對資本結構的選擇有顯著的作用，而利息保障倍數和資產擔保價值比例對資產負債率沒有明顯的影響。
  7. Thirdly, based on correlation and multiple regression analysis, the thesis employs 165 listed companies in service industry, studies empirically inner influential factors of capital structure. it ' s concluded that leverage increases with rate of sales growth ; decreases with profitability, tobin ' q and non - debt tax shields ; and there is no significant correlation between firms " size, real tax, assets collateral value, ownership structure and leverage

    對我國服務業165家上市公司2001 - 2002年末財務數據進行相關性和多元回歸分析，得出，企業杠桿和主營業務收入增長率顯著正相關；和托賓指數、盈利能力、非負債稅盾顯著負相關；和企業規模、實際稅率、資產擔保價值、股權結構沒有顯著影響。
  8. The numerical range of non - negative matrix

    非負矩陣的數值域
  9. Estimation of new bounds on the spectral radius of nonnegative matrix

    非負矩陣譜半徑的一個新界值估計
  10. D. x. xie, l. zhang and x. y. hu, least - square solutions of inverse eigenvalue probem of bisymmetric matrices, math. numer sinica, 1 ( 1999 ) 62 - 72

    廖安平，謝冬秀，雙對稱非負定矩陣一類逆特徵值問題的最小二乘解，計算數學， 23 : 2 （ 2001 ） 209 - 218
  11. A propbr data structure is used to assist grid generation for different geometric dimensions. a concept of entropy in broad sense is proposed for convective - diffusive problems in chapter 7. it is proved that there is an intrinsic relationship between the stability of the numerical schemes of the convective - - diffusive differential equations and the non - negative property of the entropy generation caused by the effective diffusion

    第七章提出了對流擴散問題中的廣義熵概念，研究了擴散熵產非負性特徵與數值格式穩定性的內在聯系，分析證明了擴散熵產非負定性及統計非負定性的穩定性準則，探討了穩定性與模擬性之間的矛盾與聯系。
  12. A normalized mapping rule of raw grey series is introduced by analysis of exponential function characteristics of the whitening differential equation, which makes the non - equigap grey prediction model ngm ( 1, 1 ) fit for universal raw grey series, improves prediction precision greatly, meanwhile makes innovation to series with negative values and enlarges grey prediction theory

    通過對白化微分方程解的指數函數特性的分析，研究了原始灰序列的歸一化映射規則，使非等間距灰預測模型ngm （ 1 ， 1 ）適應一般灰序列，灰預測精度也大大提高。這亦解決了含負值灰序列預測的理論問題，拓寬了灰色預測理論。
  13. Although the exchange fund will continue to receive steady interest income from the bond portfolio, valuation effects will almost certainly produce a low, if not negative, rate of return

    盡管外匯基金會繼續自債券組合中獲得穩定的利息收入，但因為估值下跌的影響，回報率即使並非負數，也屬偏低。
  14. By the first integral method and properties of integral depending on a parameter, the necessary and sufficient condition on the existence of dead core solution for the boundary value of a class of nonlinear ordinary differential equations has been specifically constructed

    應用首次積分法並結合含參變量積分的性質，具體構造了一類二階非線性常微分方程邊值問題存在非負死角解的充分必要條件
  15. Abstract : by the first integral method and properties of integral depending on a parameter, the necessary and sufficient condition on the existence of dead core solution for the boundary value of a class of nonlinear ordinary differential equations has been specifically constructed

    文摘:應用首次積分法並結合含參變量積分的性質，具體構造了一類二階非線性常微分方程邊值問題存在非負死角解的充分必要條件
  16. Inverse problem of generalized eigenvalue for nonnegtive symmetric tridiagonal matrix

    非負對稱三對角矩陣的廣義特徵值反問題
  17. If you specify a nonzero, nonnegative value, the query governor disallows execution of any query that has an estimated cost exceeding that value

    如果為該選項指定一個非零、非負的數值，則查詢調控器將不允許執行估計成本超過該值的查詢。
  18. The query times out after a set time calculated by sql server 25 times the estimated cost of the query or the time specified by the nonnegative value of the query wait

    查詢在一段時間之後將會超時，該時間或者由sql server計算（為估計查詢開銷的25倍） ，或者由查詢等待選項指定的非負數值確定。
  19. In the numerical simulation of hypersonic chemical nonequilibrium flows, species density may become negative at the beginning of calculation, chemical stiffness is the main reason that affects the calculation ' s stability and convergence

    摘要高超聲速三維化學非平衡繞流流場的數值模擬中，在計算初期容易發生組元密度出現負值的非物理現象，另外源項的剛性是影響計算穩定性和收斂速度的主要原因。
  20. This branch consumes the top two words from the stack, subtracting the first word from the second one and taking the branch if the result is non - negative

    這個分支使用堆棧頂端的兩個字，從第二個字中減去第一個字並且如果減的結果為非負值則轉到此分支。
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