函數的數量級 的英文怎麼說

中文拼音 [hánshǔdeshǔliángjí]
函數的數量級 英文
order of magnitude of a function
  • 函 : 名詞1. [書面語] （匣; 封套） case; envelope 2. （信件） letter 3. （姓氏） a surname
  • 數 : 數副詞（屢次） frequently; repeatedly
  • 的 : 4次方是 The fourth power of 2 is direction
  • 量 : 量動1. （度量） measure 2. （估量） estimate; size up
  • 級 : Ⅰ名詞1 （等級） level; rank; grade 2 （年級） any of the yearly divisions of a school course; gra...
  • 函數 : [數學] function函數計算機 function computer; 函數計算器 function calculator; 函數運算 functional operation
  • 量級 : order of magnitude
  1. Methods in evaluating integrals, some complex variable methods, infinite series, special function, ordinary differential equations, vector and materials, groups and group representations

    計算積分的方法、復數方法、無線級數、奇殊函數、微分方程、向量及矩陣、群論。
  2. By using the multi - configuration dirac - fock ( mcdf ) method, the effects of relaxation and correlation on the transition energies and probabilities of electric - dipole allowed ( el ) resonance and intercombination transitions for 2p53s3 - 2p6 in neutral neon have been systematically studied firstly. and the results of the transition energies and probabilities ( lifetimes ) in length and velocity gauge have been presented. during the calculation, in order to consider the rearrangement effects of the bound - state density and some important correlations, the asfs of transition initial - and final - states were divided according to their angular - momentum and parity and calculated, and different number of csfs were included in the expansion of asfs

    本文利用多組態dirac - fork （ mcdf ）理論方法，通過對輻射躍遷初、末態電子波函數的獨立計算以及在原子態波函數的展開中考慮不同數量的組態波函數，系統地研究了弛豫和相關效應對中性ne原子2p ~ 53s ~ （ 1 . 3 ） p _ 1 ~ o - 2p ~ 6 ~ 1s _ 0電偶極共振和復合躍遷的能量以及躍遷幾率的影響，給出了長度和速度兩種不同規范下激發態的能量和輻射壽命；以中性ne原子的研究為基礎，進一步研究了類ne等電子系列離子（ z = 11 - 18 ）較低的激發組態2p ~ 53s和基組態2p ~ 6的能級結構以及各能級間的輻射躍遷特性。
  3. In this thesis, we demonstrate the study of si - based light emitting materials and its importance in si - based photonics integration. we discussed mainly the gain, differential gain, threshold current of si - based quantum - dot laser and the dependence of threshold current on temperature from discrete energy level of three - dimension confined quantum - dot and state density distribution of 5 - function

    本文闡述了si基光發射材料的研究進展及它在硅基光電子集成中的重要地位，從三維受限量子點的分立能級和函數狀的態密度分佈入手，著重討論了si基量子點激光器的增益、微分增益、閾值電流及閾值電流的溫度特性。
  4. Therefore, a model of three sectors, respectively referring to domestic sector, manufacturing export sector and primary product export sector, has been established here to measure the technology spillover effects of export on domestic sector. finally, based on a broader framework, this dissertation went on to investigate the relationship between openness and china ' s economic growth, while the result shows that though there exists a notable dispute about how to measure the degree of china ' s openness, the index of trade dependence still maintains the better one to reflect china ' s economic openness. in the meanwhile, impulse response function ( irf ) method and forecasting errors variance decomposition ( fevd ) method, both of which are based on the vector auto - regression ( var ) system, are used here to investigate the dynamic relationship between openness and china ' s economic growth

    與傳統理論不同，新增長理論和新貿易理論都強調技術進步的作用，因此本文構建了一個三部門的技術外溢效應模型（國內部門、工業製成品出口部門以及初級產品出口部門） ，考察了工業製成品出口和初級產品出口對國內非出口部門不同的技術外溢效應；第四，從更加廣闊的視野就貿易開放度與中國經濟增長問題進行研究，有關貿易開放度如何度量一直是存在較大爭議的問題，本文首先對該類研究文獻進行了較為詳盡的述評，然後運用生產函數方法對所選取的5個貿易開放度度量指標進行了檢驗，結果發現盡管一些已有研究認為外貿依存度無法真實度量一國經濟開放水平，但是本文研究結果表明外貿依存度仍是度量我國貿易開放度的較好指標，進一步採用基於var系統的脈沖響應函數法以及預測誤差方法分解法對貿易開放促進經濟增長的作用進行了動態刻畫。
  5. For supporting multilevel embedding domains, linear table instead of multilevel table is used to make the implementing of information tables management ( such as symbol table and constant table management ) simple and effective. to fulfill the searching algorithm of symbol table and constant table, an assistant table is introduced to solve the problem caused by the use of hash algorithm

    在信息表管理方面，沒有採用多級的表組織方式，而採用了線性的表組織方式，簡單高效地實現了對作用域多層嵌套的支持；在表的查找演算法的實現中，通過輔助表的引入，解決了符號表和常量表的順序填寫法與hash演算法中表項記錄的hash函數定位法之間的矛盾這一難點。
  6. Soil hydraulic characteristic parameters can be estimated accurately using the pedo - transfer functions ( ptfs ) depending on soil fundamental parameters which are easy to get such as grading of soil, organic content and bulk density. pedo - transfer functions ( ptfs ) have been developed by two methods in this paper with data measured at keerqin sandy land

    然而可以通過容易得到並能保證試驗精度的土壤基本物化特徵參數，如：顆粒級配、有機質含量和土壤容重等，利用土壤傳遞函數（ ptfs ）可以較準確地估算出土壤水力特性參數。
  7. Expanding the system ' s hamiltonian to a real symmetric matrix in an appropriate orthogonal basis vector and then diagonalizing it, we get the energy spectrum of the system and calculate the energy level spacing distribution function and the spectral rigidity. then we study the statistical character of the energy spectrum under the changing of magnetic field intension and find that the system ' s motion transfers from regular to chaos gradually

    將系統的哈密頓量在一個適當的正交基矢下展開並對角化，得到系統的能譜，分別計算系統能譜的能級間距分佈函數和譜剛度，研究了該系統量子能譜的統計特徵隨磁感應強度大小的改變而表現出的系統運動由規則到混沌的漸進變化。
  8. 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
  9. Based on the observation data obtained from 69 sampling sites of different age class forests, and by using biomass expansion factor function, the regression equations of stand biomass and volume of the main forest forests in pearl river delta were built, and the regional forest biomass and its dynamics were estimated on the basis of forest inventory data

    摘要利用生物量轉換因子連續函數法，通過69組不同齡級的森林樣地實測數據，擬合了珠江三角洲主要森林類型的生物量和蓄積量之間的回歸方程，並結合3個時段森林清查資料，估算了區域森林生物量及其動態。
  10. Besides the design of the hardware construction for shape meter, the software system written in visual basic 6. 0 is also developed. the real - time data acquisition and conversion system worked in interrupt mode is accomplished by means of loading dynamic linkage library of pcl - 812pg enhanced multi - lab card. the converted data processing will be operated then, for example, scale operation, comparison, graphic display, data storage, etc. the adjusting values for the shape control are also calculated in it

    本文在參考大量帶材標準板形、軋制初始量設定、調節量計算研究的基礎上，確定了標準板形模型、設定模型、調節控制模型等數學模型；並給出了其相應的演算法；完成了板形儀計算機控制系統的硬體設計，並在此基礎上，應用高級開發語言visualbasic6 . 0 ，通過加載pcl - 812pg多功能數據採集卡的驅動程序后，調用動態鏈接庫（ dll ）中的函數的方法，完成了信號中斷方式下的實時數據採集，採集的數據經計算機作標度變換、對比、圖形顯示、存儲等處理，並提供了用於板形閉環控制的調節量。
  11. A full mathematical model of optimal flow pattern design withengineering constraints was put forward, based on modern optimal control theory. an optimal flow pattern design was presented for optimizing meridional channel of axial flow turbine. according to integral optimization of turbine stages, a full physical model and mathematical expression were put forward for proposition of optimal flow pattern, including all performance parameters in turbine stages. this problem was further recast into a typical form control to maximize specific performance index such as work or efficiency of stage with given initial state, fixed terminal condition and constraints for part of state terminal variables. the program was also worked out according penalty function method and conjugate gradient method. the optimal distribution of c1ur1 ( r1 ) was obtained according to constraint conditions and maximized objective function

    把近代最優控制論方法引入軸流透平葉片的設計，在優化的軸流透平子午通道內，建立包括透平級內所有性能參量的最優流型命題的完整的物理模型及其數學表達式，並歸化為一個在給定初始狀態、自變量終端固定、部分狀態變量終端受有約束的條件下，使級的某一性能指標（如級的功率）達到最優的最優控制問題，應用「代價函數法」及「共軛梯度法」編制計算程序，計算得到符合給定約束條件、並使目標函數取極值的最優環量分佈，結果是令人滿意的。
  12. Based on the multidisciplinary design optimization, a multidisciplinary variable coupling design optimization method for non - hierarchic systems was presented, and its basic ideas and working principle were given, to handle the coupling between subsystems, a coupling function was established by the ideal point during system - level coordination, which was used to coordinate independent optimization of the subsystem and finally obtain the global optimal solution

    摘要基於多學科設計優化原理，提出了面向非層級復雜系統的多學科變量耦合優化設計方法，闡述了其優化設計的基本思路和工作原理通過設置理想耦合點，構造了耦合函數，使子系統在各自獨立優化設計的同時，在系統級的協調下達到耦合關系的滿足，並使系統得到總體上的優化。
  13. Based on netomac, a software package for power system simulation, the model and algorithm of pre - dispatch schedule in generation markets, excitation system parameter setting, and power system small signal stability anaylsis are studied in this thesis. the main work is as follows : a model of pre - dispatch schedule is proposed, whose target is to minimize the market purchasing price ( mpp ) in the whole pre - dispatch period. then according to the characteristics of pre - dispatch schedule, the model of pre - dispatch schedule is simplified to minimize the mpp in each pre - dispatch time, and a three - step algorithm of pre - dispatch schedule is designed : dealing with the optimal problem in the whole period of pre - dispatch with static planning method, solving the problem of combination of machines with pr1 method, resolving problem of optimal power flow ( opf ) with modified powell method

    本文基於netomac模擬軟體，以發電市場預調度計劃模型及演算法、勵磁系統參數整定和電力系統小擾動穩定性分析為研究內容，主要做了以下工作：建立了以整個預調度計劃周期內的市場購電價格最小為目標的發電市場預調度計劃模型，並根據預調度計劃問題狀態數多、變量多、混合整數、非解析的特點，將預調度計劃模型的目標函數簡化為各時段的市場清算電價最小，設計了三段式預調度演算法：用靜態規劃法求解整個預調度計劃周期內的優化問題；用優先級法求解機組組合問題；用改進的powell法求解最優潮流問題。
  14. [ 5 ] expressed the wavefunction in terms of a two - dimensional fourier series. this form can satisfy the continuity of the function and of its derivative divided by the band - mass. but the number of the terms is so large that it is difficult to calculate the physical magnitudes in the single quantum wire

    1996年， s . gangopadhyay等人將波函數用二維傅立葉級數展開，這種取法滿足波函數的連續性條件及粒子流（ 1 / m ~ * ） ' （ x ， y ）的守恆條件，但是當考查單量子線時，需要展開的項數很多，計算量很大。
  15. The obtained results in the paper are as follows : ( 1 ) the expansion of fourier series of orthogonal trigonometric polynomial for conditional mathematical expectation and function of random variable ; ( 2 ) the best approximation of trigonometric polynomial about another random variable for function of a random variable ; ( 3 ) the best approximation order of trigonometric polynomial for function of random variable

    摘要獲得了如下結果： （ 1 ）條件數學期望及隨機變量函數的三角多項式級數表達； （ 2 ）一個隨機變量關于另一個隨機變量的三角多項式的最佳逼近； （ 3 ）隨機變量函數被隨機變量三角多項式最佳逼近的階。
  16. The second aspect : from qgp kinetic equations with collision integrals, by using the relaxation time approximation, we calculate the distribution functions to the second order correction. we obtain the distribution functions for quarks ( and anti - quarks ) and gluons under perturbation of the fluctuation of the color field. then in the high - temperature - low - density area, we discuss the characteristics of the distribution functions, and use t hem to get the net baryon density and the energy density

    第二，從有碰撞項的qgp動力論方程出發，忽略自旋，在色漲落擾動下，利用弛豫時間近似，得到夸克和膠子分佈函數的二級修正，通過數值分析重點討論了高溫低密情況下qgp中成分粒子分佈函數的特性，並且由分佈函數得到凈重子數密度和能量密度。
  17. A general class of solutions to nonlinear scalar equations with static cylindrical symmetry is obtained in the form of a hyperbolic function series. these solutions can be used to describe a long. straight global string

    利用雙曲函數級數的技術，研究了靜態軸對稱非線性標量方程的解析解.在物理上.這些解描述了無限長的直整體弦
  18. Su chun, shao qi - man solved the problem, we investigate the relations between the convergence of tail probability series and the existence of some type of the moment for partial sums of interchangeable random variables and positive monotone functions, we answer the three questions for interchangeable random variables, our results are new and we obtain a series of sufficient and equivalent results. in section 4 we give the law of interated logarithm for interchangeable random variables, and obtain the following main results

    藝闊8藝潤、藝側蘇淳、邵啟滿解決了pi ， ollorov提出的這一問題，這一節我們通過討論可交換隨機變量序列的部分和關于正值單調函數的尾概率級數的收斂性和某種形式矩的存在性之間的關系，回答了在一定條件下可交換隨機變量關于這三個問題的一些結果，這些結果是全新的，並得到了一系列充分性和等價性結論
  19. Four robust schemes are proposed by consideration of the problem that if the mean areal precipitation is classified and the different format of desc ending weighted function

    論文考慮了面平均雨量是否分級，降權函數的選取等問題，共設定了4種抗差方案進行計算。
  20. First of all, both r & d labor and r & d capital input variables are introduced into the input vector, and a two - level ces production function model is constructed to describe the technology of production. then the firm - level cross - section data of shanghai ’ s main manufacturing industries in 2003 is employed to study the input - output effect of r & d as well as the substitution relationship among input factors. moreover, the thesis also makes a methodological discussion of multicollinearity, and proposes a feasible approach to deal with the problem

    首先，在生產函數的投入要素向量中引入r & d投入變量，包括r & d人力投入和r & d資本投入;然後，結合相關的研究經驗和本文的研究目的，構建了相應的二級ces生產函數模型;在此基礎之上，採用2003年上海主要製造業企業的橫截面數據，分行業研究了r & d投入對產出的作用以及r & d投入與非r & d投入之間的替代關系。
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