necessary and sufficient condition 中文意思是什麼

necessary and sufficient condition 解釋
必要充分條件
  • necessary : adj 必要的 不可缺的；必須的 強迫的；必然的 必定的。 a necessary result 必然的結果。 a necessary e...
  • and : n. 1. 附加條件。2. 〈常 pl. 〉附加細節。
  • sufficient : adj. 1. 充分的，足夠的。2. 〈古語〉有能力的，能勝任的，夠資格的。n. 〈主、卑〉足夠（的量）。 Have you had sufficient？ 你（吃）夠了嗎？adv. -ly
  • condition : n 1 狀態，狀況，情形；品質。2 〈pl 〉外界狀況，周圍情形。3 地位，身分。4 條件；【語法】條件子句。...
  1. The necessary and sufficient condition of the extreme value of implicit function and it ' s application

    隱函數取極值的充要條件及其應用
  2. On necessary and sufficient condition of invertible matrix in integral ring

    整數環上矩陣可逆的充要條件
  3. Necessary and sufficient condition of 2 - dimension projective transformation being involution

    二維射影變換是對合的充要條件
  4. In chapter3, we discuss the multiplicate progressive stresses accelerated life test. under the weibull distribution and an invers power law model we first present a necessary and sufficient condition for the existence and uniqueness of mle for the exponential distribution, then give estimators and confidence intervals of the parameters based on the blue. finally, we study them by using monte - carlo simulation

    第三章首先指出了一組序進應力加速壽命試驗下weibull分佈分佈參數的mle不唯一，然後給出了p組序進應力加速壽命試驗下指數分佈的mle存在和唯一的一個充要條件，並用隨機模擬的方法研究比較了參數估計的優良性，最後給出了p組序進應力加速壽命試驗下weibull分佈中參數的點估計和區間估計，討論了有關問題，給出模擬實例。
  5. In the second section, we will present a ring - theoretical proof for the necessary and sufficient condition for a [ d ] to be simple, as an associative algebra

    第二節給出了a [ d ]作為結合代數是單的充分必要條件的一個環論的證明。
  6. The necessary and sufficient condition for centrosymmetric solution of matrix equation was presented and general solutions were obtained. the optimal approximation solution to a given matrix was provided in the solution set

    先討論一類矩陣方程存在中心對稱解的充分必要條件，給出解的一般表達式，並在解集合中給出了與給定矩陣的最佳逼近解。
  7. In the second section of chapter 2, the fact that the essential interest rates of all nodes differ from each other is discussed, a non - homogeneous differential equation model of interest rate - amount of circulating fund is established, and it is proved that the sum of the weighted interest rates of each node in the financial network still remains a constant and that the difference of the instant interest rates between two nodes will finally approach the difference between their basic interest rates. in the third section of chapter 2, the differential equation model of interest rate - amount of circulating fund in an open system is studied, the laws of changes of interest rate are taken into account when fund is injected into or withdrawn from the node or when fund is injected into the network or withdrawn from the network, and the stability of equilibrium solution is proved based upon lyapunov stability theory. in the last, the equation model of interest rate - amount of circulating fund in the financial network with time delay is studied, and a necessary and sufficient condition for the existence of periodic solution is obtained to the interest rate - amount of circulating fund equation with delay

    本文第二章首先建立了封閉系統的利率?流通量微分方程模型，證明了各結點利率加權和為常數即金融市場利率均衡原理，以及各結點利率極限為整個網路平均利率；其次在各結點基本利率不相同的情況下，建立了非齊次利率?流通量微分方程模型，證明了金融網路各結點利率加權和仍是一個常數，並證明了各結點兩兩之間的即時利率之差最終將穩定地趨于其基本利率差；此外，還研究了開放金融網路利率?流通量方程模型，考慮了結點自身追加資金和提走資金的情形以及網路外部注入資金和向外部轉移資金情形下的利率變化規律，用lyapunov穩定性理論證明了模型均衡解的穩定性；最後，還研究了具有時滯的金融網路利率?流通量方程模型，並給出了具有時滯金融網路的利率流通量方程具有周期解的充要條件。
  8. Two conceptions of quasiseparable state and distillable subspace are introduced. first a necessary condition of distillability from finite copies is given, then a necessary and sufficient condition of distillability from finite copies and the most efficient distillation protocol are given. these conclusions can be generalized to multi - partite mixed states

    定義了準分離態和提取子空間的概念，得到了在有限個拷貝情況下，二體和多體混合態糾纏提取的必要條件、充要條件及最有效的提取方案；計算了2 （
  9. A necessary and sufficient condition with ergodic of 1 - order probability distribution function of stochastic process ( theorem 1 and corollary 1 ) and extended the general distribution theorem of stochastic variable under the case of weakly condition ( theorem2 ) are presented

    摘要提出了隨機過程一階概率分佈函數具有遍歷性的一個充分必要條件（定理1和推論1 ） ，並在較弱條件下，對一般的關于隨機變量函數分佈定理作了進一步的推廣（定理2 ） 。
  10. In this article, we use idea of turning dispersion into convergence and put all the well ' s points into the same unit net to think about it. and answer three questions of the distribution of well drilling by the way of searching for groups of points. fincite - step - searching underthe condition of translationg fcoordinate system or revolving coordinate system. to first question. we find two algo - rithms and make use of data that is given to find the solution. we seek coorlinate of net point is co. 361, 0. 461 ) and mostly four old well ' s points are utilized at the same time by first algorithim, which are no. 2, no, 4, no. 5, no. 10. by second algorithm, we rechon the coordinate of net point is co. 390, 0. 505 ). and that mostly four old well ' s points are utilizld which are no. 2, no. 4, no. 10. to second question, we turn it into the first question by angling awt the center of net point. we seek that mostly six old well ' s points are utilized at the same time, which are no. 1, no. 6, no. 7, no. 8, no. 9, no. 11, when net is angled 0. 78 radian. and net point is translated to ( 0. 75, 0. 076 ) ( at nwe coordinate system ). to third question, wefind a necessary and sufficient condition and affer algorithms, at last, we analyse algorithms

    運用化分散為集中的思想，把所有的井點都放在同一個單位網格內考慮.在坐標可平移、旋轉的條件下，利用尋找點群、有限步驟搜索法，對鉆井布局的三個問題進行了解答.對問題一，給出了兩個不同演算法.並對題目提供的數據進行了求解，演算法1得到的結點為（ 0 . 361 ， 0 . 461 ） ，最多有4個舊井點被同時利用，它們是第2 、 4 、 5 、 10個井點;演算法2得到的結點為（ 0 . 390 ， 0 . 505 ） ，最多有4個井點被利用，它們是第2 、 4 、 5 、 10個井點.對問題二，以結點為中心旋轉一定的角度后，歸結為問題一進行求解，求解結果為當網格傾斜角為0 . 78弧度（相對原坐標系） ，結點平移到（ 0 . 75 ， 0 . 076 ）點（在新坐標系下） ，可被同時利用的最多舊井點為6個，它們是第1 、 6 、 7 、 8 、 9 、 11個井點，對問題三，我們給出了充要條件，並給出了演算法.最後還分析了演算法的優劣性
  11. Then we give the necessary and sufficient condition under which the optimally weighted ls estimate is identical to thu conditional mean of the parameter given input and observation, i. e., the optimally weighted ls estimate could be optimal nonlinear estimate in the minimum variance sense

    在方差陣可逆的條件下，我們發現最優加權最小二乘估計優于線性最小方差估計，進而得到了其與最小方差估計（即條件均值估計）等價的充要條件。
  12. Two necessary and sufficient condition for controllability of generalized systems

    廣義混沌同步系統的電路實驗
  13. The necessary and sufficient condition of series - compact sets in c spaces

    空間中列緊集的一個充要條件
  14. In the second chapter, we obtain the necessary and sufficient condition where the cubic kolmogorov type system is bounded if homogeneous polynomials of degree 3 are relatively prime. and we obtain there are only four behaviours of the trajectories near the equator of the bounded cubic system if the homogeneous polynomials of degree 3 are relatively prime. in the third chapter, we study the existence and nonexistence of limit cycle for a class of bounded cubic systems

    第一章為引言；第二章，我們得到了齊三次項互素時三次kolmogorov型系統有界的充分必要條件及其在赤道上孤立奇點附近軌線的分佈情況有且僅有四種；第三章，我們研究了一類有界三次kolmogorov型系統極限環的存在性與不存在性。
  15. Abstract : the generalized shrunken prediction of finite population is introduced, using generalized shrunken least squares estimator of linear regression models. with respect to prediction mean squared error, a necessary and sufficient condition for superiority of a generalized shrunken prediction over the best linear unbiased prediction is obtained. in the case of linear combination of every unit index, a linear restricting prediction is introduced and then a necessary and sufficient condition for superiority of linear restricting prediction over the best linear unbiased prediction is devived

    文摘:利用線性回歸模型的廣義壓縮最小二乘估計，引入了有限總體的廣義壓縮型預測，在預測均方誤差意義下，得到了廣義壓縮型預測優于最佳線性無偏預測的一個充分必要條件；在只能得到每個個體指標的線性組合時，引入了一種線性約束型預測，並得到了線性約束型預測優于最佳線性無偏預測的一個充分必要條件
  16. For the general multivariate linear model, in this paper, the necessary and sufficient condition for admissibility of the linear estimator for sx in the class of linear estimator under different criteria is gained

    摘要對於一般未知方差多元線性模型，討論了共同均值矩陣參數的可估函數sx的線性估計在線性估計類中的可容許性問題，證明了在本文所給的不同優良準則下可容許性是等價的，並得到了它們的充要條件。
  17. A necessary and sufficient condition on diffeomorphisms

    關于微分同胚的一個充分必要條件
  18. The paper gives the necessary and sufficient condition of self - dual graphs, all of self - dual graphs can be structured with this necessary and sufficient codition

    摘要給出自對偶圖的充要條件，並利用此充要條件，能構造出所有自對偶圖。
  19. A necessary and sufficient condition of a family of peudocontractive maps

    偽壓縮映像族的一個隱格式強收斂的充要條件
  20. On the other hand, we had obtained the necessary and sufficient condition for the existence of robust decentralized follower when the external unstable model of every subsystem was different with each other

    另外，文中還研究了各子系統外作用形式不同時魯棒跟隨器存在的充要條件。
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