numerical estimation 中文意思是什麼

numerical estimation 解釋
數值估算
  • numerical : adj 數字的；數值的；用數字表示的。 （a） numerical order 號數。 a numerical statement 統計。 the ...
  • estimation : n. 1. 估計，評價。2. 預算，預算額；概算。3. 尊重，尊敬。4. 意見，判斷。5. 【化學】估定；測定。
  1. It analyse the stability with numerical simulation. finally, on the basis of geological estimation and analysis of the monitoring data and the numerical simulation, it conclude : ( 1 ) through the tracking investigation of the deformation phenomenon, and the study of the rock mass constructure of the slop, it determine the mode of the formation and destruction on the basis of aggregate analysis of the monitoring data

    最後，結合地質判斷、監測分析結果及數值模擬分析結果以及對典型剖面的極限平衡計算結果，得出了以下主要成果： （ 1 ）通過對「左砂」邊坡變形破壞跡象的跟蹤調研，對斜坡的巖體結構和已經發生的破壞跡象進行深入的研究分析，結合對監測資料的綜合分析，確定了「左砂」邊坡可能的變形破壞模式。
  2. Numerical and experimental results show that good angular superresolution and high estimation accuracy can be achieved provided that the radar pulse repetition time is small enough so that the echoes can be considered sufficiently correlated

    結果表明，在雷達的脈沖重復周期同目標的抖動相比足夠小的情況下，相位權重法可以取得較好的方位解析度和較高的測角精度。
  3. Compared with a delta wing aircraft, the double - delta wing configuration has better aerodynamic performance at high angles of attack. an operational analysis was introduced as a method for evaluating training effectiveness of trainer aircraft. approaches to the engineering estimation of aerodynamic characteristics for aircraft with a double - delta wing configuration were studied, and the procedures for determining aircraft performance indices formulated. taking training effectiveness as the objective function and geometric parameters of the wing platform as design variables, through a numerical multivariate optimization arithmetic, the conceptual design optimization for a certain fighter trainer aircraft with double - delta wing configuration was carried out under the constraints of tactical and technical requirements and interrelated geometry. agreement of a calculation example with engineering practice indicates that the optimal design has higher training effectiveness than the baseline design, and in addition, improves the structural force - bearing conditions

    雙三角翼氣動布局比三角翼飛機具有更好的大攻角空氣動力特性.引入了評估教練機訓練效能的作戰分析法，研究了雙三角機翼布局飛機空氣動力特性的工程計算途徑以及飛機性能指標的確定方法.以訓練效能作為目標函數並選取機翼平面形狀的幾何參數為設計變量，採用多變量數值尋優方法，在戰術技術指標及相關幾何約束條件下，對某高級教練機的雙三角機翼氣動布局方案進行了優化選擇.算例表明最優方案不僅比原準方案具有更高的訓練效能，還改善了結構的受力情況，與工程實踐吻合
  4. Firstly in this part, computer simulation methodology based on the baecher model for generating network of discrete fractures was presented, which includes the follow details : probability distributions of fracture density, orientation, trace length, size, and aperture and estimation of their statistical parameters ; stochastic models of fracture network ; monte - carlo ' s simulation method ; numerical simulation procedure and technicality. then, boundary element method was used to calculate flow through the generated fractured network. assuming single fracture as a two - dimension inexpressible isotropic porous media, boundary element method equations for flow in single fracture and then in fracture network were derived using the weighted residual method

    給出了離散裂隙網路模型所依據的基本假定；發展了基於baecher模型的離散裂隙網路計算機隨機生成技術：詳細地推導了單裂隙滲流和多裂隙相交網路滲流的邊界單元法公式，發展了離散裂隙網路中穩態滲流的邊界元數值技術，並且討論了相關的具體數值技術細節，如角點的處理方法，單元的自動剖分等：描述了混合邊界元?管流模擬方法及其數值實現；研究了裂隙網路的簡化方法，並針對裂隙網路邊界元法的特點提出了一種改進的分塊三角分解法。
  5. Using numerical solution for inverse problem in partial differential equation, a method for initializing groundwater table on base one pumping test and recharge estimation on two pumping tests were presented. then a numerical model for groundwater table forecast was developed

    本文利用對偏微分方程逆問題的數值求解，給出了由一組抽水井實測水位計算地下水初始水位以及由二組抽水井實測水位值估算總補給量的方法。
  6. Comparing experimental results with the numerical analytic results using the criterion, it is found that the criterion employs the axial deformations of bracing members as fatigue damage parameters and can be applied to real - time estimation of low - cycle fatigue damage of bracing members under a loading history - dependent random stale

    研究結果表明：本文方法以鋼支撐軸向位移為損傷參量，能實時估算在隨機位移荷載下鋼支撐的低周疲勞累積損傷發展，並與試驗結果吻合較好。
  7. A numerical example illustrates that the new robust - biased estimation method not only can resist the bad influence of outlier and effectively overcome the difficulty caused by ill - conditioning simultaneously, but also is far more accurate than ls estimation, biased estimation, robust estimation and generalized shrunken type - robust estimation

    通過數值實驗說明了基於擬準檢定的抗差化有偏估計確實是一種很好的估計，對消除粗差和病態性的不良影響非常有效。
  8. Numerical tests show that the proposed error estimation scheme can indicate the numerical errors of lbiem solution efficiently

    數值算例顯示，提出的誤差估計方案能夠有效地指示出真實的數值誤差。
  9. The main research contents include : study the modeling and measure of tendency of customer group ' s requirements. use the method of least - squares estimation in conjoint analysis to model and measure the tendency of customer group ' s requirements and transform the fuzzy requirements of customer group into numerical attribute importance and level utility. solve the problems of estimation and optimization of regression model

    研究的主要內容包括：研究了客戶群體需求傾向的建模和量化過程：應用聯合分析法的最小二乘回歸模型建模和量化客戶群體需求傾向，將模糊的客戶群體需求傾向轉化為量化的屬性重要度和水平效應值，並解決了模型的有效性評估和優化問題。
  10. Applying variational method we analyze the existence and uniqueness for the solution of the corresponding boundary variational equation, truncated mrm boundary variational equation, and approximation truncated mrm boundary variational equation in detailed. we obtain the error estimation for various approximation solutions and construct the boundary integral method with constraint. we explain the principle for choosing the mesh size and the truncated number in mrm. finally the numerical examples show that the theoretical analysis is accord with the numerical experiment result

    採用變分方法系統分析了相應問題的邊界變分方程，截斷的mrm邊界變分方程與近似截斷mrm邊界變分方程解的存在唯一性，解釋了網格寬度與mrm方法中截斷數的選取原則，討論了mrm方法中的迭代誤差估計，給出了數值算例。
  11. A numerical method on estimation of stable regions of rotor systems supported on lubricated bearings

    滑動軸承轉子系統動力學穩定域的數值分析方法
  12. Error estimation as well as the subsequent adaptivity analysis are concerned with the reliability of numerical algorithms and improvement of computational efficiency

    摘要誤差佑計以及自適應分析涉及演算法的可靠性以及計算效率的改善。
  13. Phoebe : physics of eclipsing binaries - phoebe ( physics of eclipsing binaries ) : a wd98 front - end for automated numerical minimization and physical parameters ' estimation

    是一個為自動數字極小化和物理參數評價提供的一個wd98前端。
  14. Furthermore, we also devise numerical experiments for crouziex - raviart element, which has not theoretical estimation yet

    本文還對尚未得到理論結果的crouziex - raviart有限元進行了數值實驗。
  15. With effective work in chemical kinetics mechanism, turbulent combustion, estimation of the initial and boundary conditions and the combination of the complex chemistry solver technology from the chemkin collection and the flow solver technology of star - cd, the success of the three - dimensional numerical calculation is first obtained in spark - ignited premixed - charge lpg single fuel engine

    理論上以lpg發動機缸內三維燃燒模擬為主要內容，從化學動力學機理、湍流燃燒、確定計算的初始條件三個方面著手，首次將chemkin的處理詳細化學機理的功能和star - cd處理湍流燃燒的長處相結合，成功地對點燃式lpg發動機進行缸內燃燒三維計算，取得了較為滿意的結果。
  16. A numerical method to solve the maximum likelihood estimation of three - parameters weibull distribution with part probabilistic information

    不完全壽命威布爾分佈三參數最大似然估計式求解
  17. Abstract : the distribution of axial magnetic field around the centre of helmholtz " coils has been thoroughly analyzed, a numerical method for estimation of the homogeneity of coils " magnetic field had been found, and the homogeneity curve is given

    文摘:分析了亥姆霍茲線圈中心區域軸向磁場的分佈，找到了一種估計線圈磁場均勻區的計算方法，並給出了均勻區分佈曲線圖。
  18. Numerical simulation demonstrates that the method is of good ability in suppressing the influence of measurement noise on estimation accuracy

    數字模擬結果表明，該方法在抑制測量噪聲對估計精度的影響方面具有良好的效果。
  19. A numerical estimation of the only children in jiangsu and the risk analyses

    江蘇省獨生子女數量測算及其風險分析
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