近似計值 的英文怎麼說
中文拼音 [jìnsìjìzhí]
近似計值
英文
approximate evaluation-
( 4 ) on the efficient method for the dynamical core of the new generation multi - scale forecasting model i ) we present a new multi - level sparse approximate inverse preconditnioner for the complicated 3 - d helmholtz equations in the new generation weather forecasting model. as a result, the new sparse approximate inverse preconditioned gcr and gmres algorithms are given and successfully applied in the dynamical core. numerical tests show that the new algorithms perform very efficiently, and can greatly improve the efficiency of numerical model
對此，本文提出了一種基於逐層門限技術的近似逆矩陣稀疏模式預選方法，並構造了相應的稀疏近似逆預條件子，結合gcr演算法和g州[ r衛s演算法，首次將逐層門限稀疏近似逆預條件子應用於新一代多尺度預報模式動力內核的實際計算，數值實驗表明這里給出的方法可以大大提高數值模式的計算效率。The numerical results show that the time domain response of the laminated plates induced by the in - line force of non - steady component oscillating flow is similar to harmonic motion with certain ribbon which is formed by period motion
計算結果表明，零均值流量脈動流順流向作用力誘發反對稱角鋪設層合板的時域響應近似於具有一定帶寬的諧波運動，而這一帶寬又是由一定周期運動形成的。Approximate number of kilobytes of data per batch as
每批以千位元組計的數據的近似值（即Abstract : the intensity distribution in young ' s double pinhole interfer ence expriment is numerically calculate, and compared with the result of the nea r - axis approximation
文摘:數值計算了楊氏雙孔干涉的光強分佈，與傍軸近似條件下的結果作了比較，並以圖形的方式顯示了干涉條紋的形狀For micro - cavity semiconductor laser, station model is proposed in this paper and its steady - state and instantaneous characteristics when the coupling efficiency of spontaneous emission into a lasing mode is equal to 1 are analysised. for current noise, sp noise, noise, p noise, as well as current modulation, sp modulation, modulation and p modulation, using small - signal approximation, we derive the laser ' s corresponding transfer functions. and we calculate their signal - to - noise ratio ( snr ) gain in various parameters through frequency domain analysis in the premiss of large input snr
本文對于微腔半導體激光器，提出站模型，能夠較直觀簡潔地分析微腔半導體激光器的穩態和瞬態特性，利用此模型對具有重要實用價值的= 1的微腔半導體激光器進行了討論；對于電流i噪聲、自發發射壽命_ （ sp ）噪聲、自發發射因子噪聲、光子壽命_ p噪聲，以及電流調制、 _ （ sp ）調制、調制、 _ p調制，在小信號近似下，得到了相應的激光器的傳遞函數；在大信噪比的前提下，對激光器進行了頻域分析，分別計算了它們在不同參數下的信噪比增益，分析了其抗噪聲性能。In order to calculate easily and do n ' t influence the single - chip microcomputer ' s calculate velocity, we put forward two scheme to deal with the numerical value, one is to use a simple function to close or approach a normal function f ( x ) ( mainly is lagrange ' s intepolation, newton ' s intepolation, hermite ' s intepolation, cubic spline interpolation, etc. ) the other one is function approach ( mainly is chebyshev ' s polynomic. legendre ' s polynomic, laguerre ' s polynomic, method of least squares, etc. ), we analyze and compare the lagrange ' s intepolation and chebyshev ploynomic, at last, we select the chebyshev polynomic to do the value calculating on single - chip microcomputer
提出了數值處理的二種方案。即用簡單函數近似或逼近一個一般函數f （ x ） （主要有拉格朗日插值、牛頓插值、埃爾米特插值、三次樣條插值等）和函數逼近（主要有切比雪夫多項式、勒讓德多項式、拉蓋爾多項式、最小二乘法等） ，對上述兩個方案中的典型函數?拉格朗日插值和切比雪夫多項式進行了分析比較，最後選取切比雪夫多項式完成單片機上的數值計算。Approximately computed piston vibration of circular eradiation plate of columned magnetostricative actuator
磁致伸縮換能器輻射板活塞振動幅值的近似計算For the stress analysis of dryers under the line load of supporting rollers, according to hoff theoretical solution of thin cylindrical shell under line loads, mangelsdorf approximate solution is modified on the basis of the calculation analysis for 14 sets dryers " dimension by computer programming with matlab software. the approximate formulas of the second largest hoop stress of the middle section of the shell are derived
針對托輥線壓載荷作用下烘缸的受力分析，本文根據薄壁圓柱殼在線壓載荷作用下的hoff理論解，在運用matlab軟體對14組常用烘缸參數進行編程計算分析的基礎上，對mangelsdorf近似解作了修正，並由最小二乘法導出殼體中部截面環向應力次大值的近似計算式。Nuclear reaction is the important mechanism for causing single event upset as well, especially for high - energy protons. all the formula needed for simulating proton - induced radiation effects are deduced. to bypass the obstacle of lacking nuclear reaction parameters of high - energy protons interacting with silicon, the author successfully obtained the necessary nuclear reaction cross sections by combining an intranuclear cascade nuclear reaction model with monte - carlo simulation, which are applied to the calculation of seu
整理、推導了數值模擬所需要的計算公式及連續慢化近似下的輸運方程，自行編制了輻射屏蔽計算程序、單粒子效應計算程序、熱?力學效應計算程序，並對所有計算程序進行了對應的驗算，計算結果與公開發表的理論或實驗結果相符合。Inequality to estimate calculus and approximate computation
一類函數積分的估值公式與近似計算Thermal contact resistance is calculated by fem. the triangular model is considered more precise when its control angle equals 30 and an approximate formula is provided for calculation of the thermal contact resistance by comparing computation models
本文採用有限單元法數值計算接觸熱阻，提出控制角為30的三角形模型具有較高的精度，給出接觸熱阻的近似計算公式，並分析了表面粗糙度對接觸熱阻的影響。The water quality respond relation of input - output measurements are established by systematic theory in this paper. according to the peculiarity of hydrology and the necessity of water quality inverse problem the multi - parameter inverse problem model based on ordinary differential equation is developed. the existence and uniqueness of the solution of the ordinary differential equation about two parameters or multi - parameter are to be proved. the unstability depending on errors between monitoring data and interpolation approximate data are analyzed and demonstrated. cubic spline interpolation function, the least two multiply and positive rule method are conjoined for obtained solution of multi - parameter. the results from this algorithm indicats its efficient to the multi - parameter identification in water quality modeling
本文應用系統理論，建立了水質多參數輸入輸出之間的響應關系；根據河流水文水質變化特點和參數反問題的需求，建立了水質常微分方程多參數反問題模型.根據常微分方程參數反問題的數學理論，作者給出了兩參數和多參數水質常微分方程反問題的解的存在性、唯一性的理論證明過程和結論；還針對水質現有監測資料的測驗誤差和插值近似計算誤差造成參數反問題的不穩定性，將三次樣條插值函數、超定方程最小二乘法和正則化演算法有機地結合使用，成功地給出了水質參數反問題的穩定化演算法.最後給出了應用計算結果A simulation is carried on three swirling flow with different nonaxisymmetric tangential injection in a horizontal straight pipe to find if neglect their deflations whether they equate to axisymmetric module. a conclusion can be found that when nonaxiwymmetric conditions are occurred, there will be deflections near entrance that are different from axisymmetric condition, and these deflections will be erased on area far from entrance
另外對水平圓管中三種非軸對稱切向入流按軸對稱近似計算時進行數值比較分析，發現三種非軸西安理工大學碩士學位論文對稱切向入流條件下在近入口處出現很大的偏差，這種偏差不能忽視;而經過充分的發展之後，這種差別將被抹平，即在離入口較遠的區域各種情況的計算結果與軸對稱條件比較差別不大。Third, the three methods including inertia ! completion, modal cost analysis and inner balanced method are researched respectively and deeply. in the case of the small damping and widely separated natural frequencies, the approximation expression of the modal cost is introduced, and the system is approximately balanced
重點介紹了系統各階模態價值的封閉表達式和在弱阻尼、頻率足夠分開的情況下模態價值的近似計算公式；以及在弱阻尼、頻率足夠分開的情況下系統近似為內平衡，系統的奇異值也可由近似公式計算得到。We reconstructed the phase space and calculated the nonlinear parameters such as correlation dimension, the largest lyapunov exponent, approximate entropy, and l - z complexity of the data. it can be conclud from the results that the reconstruction of heart beat rate signal is strange, its correlation dimension is between 5 to 7 and have the character of fractal dimension, its largest lyapunov exponent is larger than zero, its approximate entropy and l - z complexity are obviously differ from noise. we can draw a conclusion from all above : the heart beat rate signal is n ' t simple noise, it is high dimensional chaos obeys certain dynamical law
我們還對信號進行了相空間重構，計算了信號的關聯維數、最大lyapunov指數、近似熵和復雜度這幾個非線性特徵量，我們發現，心率信號的吸引子是奇怪吸引子，關聯維數介於5到7之間，具有分維的特徵，其最大lyapunov指數大於0 ，其近似熵值和復雜度值明顯區別于噪聲，這說明心率信號不是隨機噪聲，它是服從確定性動力學規律的高維混沌信號。The acceleration is first evaluated from governing equation, secondly, the formulae of displacement and velocity are developed basing on some assumptions, and then the discrete expressions of the response mean square value are deduced
首先，直接從控制方程出發計算加速度，其次，給出了位移和速度的一種近似計算公式，最後，推導出響應均方值的離散計算表達式。The contrasting analysis is carried out against approximate calculation, numerical simulation and the real measuring result of flow - in direction stress along the die - entrance in the rectangular drawing. it is considered that in the condition of non - uniform solution, part calculation has credibility to some extend
摘要針對矩形盒拉深中凹模口流人方向應力的近似計算、數值計算和實際測量結果進行了比較分析，認為在尚未得到統一解的情況下，分割計算具有一定的可信度。Secondly, functional derivation is employed to analyze the two - dimensional colored noise in the third order laser model with dispersive medium. the stationary intensity distribution is derived. the variation of the most probable intensity with pump parameter and noise intensity correlation time is investigated
其次從色散型介質中三次激光模型出發，通過泛函導數，應用小近似計算兩維色噪聲，得到激光場定態強度分佈，研究了定態強度分佈的極值點隨抽運參量和強度噪聲相關時間的變化情況。To solve the problems of adaptive determinition of the cluster number, flexible objective function definition and approximate optimal computation in clustering analysis, a ga - based divisive hierarchical clustering algorithm ( gadhc ) was proposed, which integrated some features of divisive hierarchical clustering algorithm and binary genetic clustering algorithm
摘要針對聚類中自適應確定聚類個數、目標函數靈活定義及優化的近似計算等問題，綜合了分裂式層次化聚類演算法能根據相似度閾值自適應地確定聚類個數的特點及二進制遺傳聚類演算法具有較強的搜索近似最優解能力及目標函數定義靈活的特點，提出了一種基於遺傳演算法的分裂式層次化聚類方法。Currently, the calculating theories of concrete - beam temperature fields can be divided summarily into three types : category 1 is the method of how the hot conduct in the square distance ; category 2 is the proximate - number analytical method, such as finite difference method, finite element method etc. ; category 3 is a half experience and half theoretic method
目前混凝土箱梁溫度場的計算理論和方法概括起來，大致可以分為三類：第一類為熱傳導方程求解法；第二類為近似數值分析方法，如有限差分法、有限元法等；第三類為半經驗半理論法。分享友人