second-order theory 中文意思是什麼

second-order theory 解釋
二次理論
  • second : adj 1 第二的；第二次的；二等（的）。2 次等的；較差的；劣於…的 （to）。3 〈美國〉較年輕的。4 另一...
  • order : n 1 次序，順序；整齊；（社會）秩序，治安；狀況，常態；健康狀態；條理；會場秩序；議事程序，日程；...
  • theory : n. 1. 理論，學理，原理。2. 學說，論說 （opp. hypothesis）。3. 推測，揣度。4. 〈口語〉見解，意見。
  1. Powerformer have some changes in constract with the conventional generator ， subsequently it also have some new problems in order to have an economical ， efficient ， credible development and application the structure and the philosophy of electromagnetism of powerformer will be on speaking terms changes electrical design ， magnetism design ， thermal design and structural design are have some new changes above all ， the electromagnetism parameter and the harmonic magnetomotive force of powerformer are studied in this paper first ， it mainly utilizes analytics to deduce formula of slot leakage reactance it considers three instances ， including monolayer - slot ， multilayer isometric - slot and multilayer anisometric - slot then ， the analytics and the fem are utilized to calculate slot leakage reactance of stator winding of prototype of powerformer and compare their results second ， the theory of utilitzing fem to calculate the reactance of powerformer is simply introduced ， including stable reactance ， transient and subtransient reactance specially ， the saturated influence of the stable reactance is considered then ， the results are analysed final ， it mainly introduces the influence of harmonic magnetomotive force of stator winding and analyses the harmonic magnetomotive force of stator winding then ， it mainly analyse harmonic magneto - motive force of stator winding through arranging various arrays of stator winding and observe their influence

    基於上述原因，本文對powerformer的電磁參數以及定子繞組諧波磁勢進行了研究。首先是用解析法推導出powerformer定子繞組槽漏抗的計算公式，考慮了單層圓形半閉口槽、多層等半徑圓形半閉口槽和多層不等半徑圓形半閉口槽三種情況，並對powerformer樣機的定子繞組槽漏抗用解析法和有限元法進行了計算，並比較其結果；其次，簡要介紹了有限元法計算powerformer電抗參數的原理，包括穩態電抗、瞬態電抗和超瞬態電抗，對穩態電抗考慮飽和影響，對結果進行分析；最後，介紹定子繞組諧波磁勢對電機運行性能的影響並對定子繞組諧波磁勢進行了分析。然後通過對定子繞組進行不同排列來分析定子繞組諧波磁勢，看看繞組排列對諧波磁勢的影響。
  2. Based on the characteristic of fractured signal, time series analysis can detect the distribution of fractures. because of excellent antinoise ability, in high - order statistics theory, the theory of time series analysis includes more information and resolves more problems than second - order statistics

    時間序列分析法具有很好的抗噪能力，主要採用了高階統計量的方法，它比以前廣泛應用的二階統計量的方法包含了更多的信息。
  3. According to the kernel estimating theory of nonlinear semiparametric models under the least - square principle, the structural formulae of the estimation of parametric and nonparametric components and the direct formulas of kernel estimation considering the second order items were given

    摘要基於非線性半參數模型最小二乘核估計，給出了其參數分量和非參數分量估計的構造式，導出了參數分量和非參數分量顧及二次項直接解法的計算公式。
  4. As we all know, the comparison and separation theory of zeros distribution for second order homogeneous linear differential equations established by g. sturm lays a foundation of oscillation theory for differential equations

    眾所周知，由g . sturm建立的齊次二階線性微分方程零點分佈的比較理論和分離理論為微分方程振動性理論的研究奠定了基礎。
  5. In the second chapter, basic theory about the mathematical statistics and the structural reliability in this paper. such as parameter estimation types of statistics distribution tests of distribution hypothesis methods of linear - second order moment, ect

    數理統計學原理主要包括：參數估計、統計分佈類型、分佈擬合檢驗；工程結構可靠度理論主要介紹了一次二階矩方法。
  6. The second part has the dialectical thinking about the two regulation ' s generation styles which enacted from top to bottom and spontaneous in the enlightenment of hayek ' s spontaneous order theory, and puts forward the key to the organic integration of two styles

    第二部分在哈耶克自生自發秩序論的啟示下，對自上而下制定與自生自發兩種制度產生方式進行了辨證思考，並提出了實現兩者有機融合的關鍵所在。
  7. In the last chapter, the submarine motion tendencies under first order and second order wave force actions are illustrated through theory analysis and simulations, which established the foundation for studying the design of autopilot control system under wave force disturbances

    最後本文從理論、模擬兩個方面分析和顯示了艇體在一階、二階波浪力作用下的運動趨勢，從而為研究潛艇近水面波浪力干擾下的潛艇自動舵設計奠定了基礎。
  8. The details of the construction and characteristics of the new finite - difference scheme are presented in this thesis, by using both the integration theorem and the taylor expansion theory. it is proved that the new approach has the second - order accuracy on the grids with axis - symmetric voronoi cells and at least has the first - order accuracy in general. according to this character of the scheme and the computational requirements of the finite - difference approach, a striping procedure is involved to decompose the velocity model into variable spatial size grids with a nearly constant tune step preserved

    本文從積分定理和taylor展開兩個角度，詳細分析了基於voronoicell的非規則網格有限差分演算法的構造過程及性質，並且在理論上證明了本文的差分方法的精度與網格形狀的關系：當voronoicell為關于節點的軸對稱圖形時，本文差分方法具有二階精度；在一般的網格上，則至少具有一階精度。
  9. The paper is concerned with periodic solutions to nonautonomous second order hamilton systems where, m : [ 0, t ] - s ( rn, rn ) is a continuous mapping in the space s ( rn, rn ) of symmetric real ( n x n ) - matrices, such that for some u > 0 and all ( t, z ) [ 0, t ] x rn, ( m ( t ) x, x ) > u | x | 2. a s ( rn, rn ), f : [ 0, t ] x rn r is continuous and f : [ 0, t ] xr r exists, is continuous and we study the existence of periodic solutions of the systems by using ekeland variational principle and the saddle points theorem. we suppose that the nonlinearity vf and potential f belongs to a class of unbounded functional. our work improves the existed results. we obtained the results of multiplicity of periodic solutions of the systems by using lusternik - schnirelman category theory and the generalized saddle points theorem, and the functional does not need the condition of constant definite. at last, we obtained the existence of infinity many distinct periodic solutions of the corresponding non - perturbation systems by using the symmetric mountain pass theorem

    （ ? ， ? ）為r ~ n中內積， | ? |為對應范數。 f [ 0 ， t ] r ~ n r連續， ? f （ t ， x ）存在且連續， h l ~ 1 （ 0 ， t ； r ~ n ） 。利用ekeland變分原理和鞍點定理討論了該系統周期解的存在性，把非線性項和位勢函數放寬到一類無界函數，推廣了這方面工作的一些已有結果；利用廣義鞍點定理和lusternik - schnirelman疇數理論得到了該系統的多重周期解，取掉了泛函的常定要求；最後利用對稱山路定理得到沒有擾動時系統的無窮多周期解。
  10. Myers ( 1984 ) and majluf ( 1984 ) proposed new pecking order theory, which states that under asymmetric information conditions firms have no well - defined target debt - to - value ratio, and that firms in general prefer internal financing ( first ), then external debt financing ( second ), and external equity financing ( third )

    代表性學說有mm定理及其修正學說、啄食順序理論和新優序融資理論。新優序融資理論認為在不對稱信息條件下，企業首先偏好內部融資，其次是債權融資，最後是股權融資。
  11. In the end, the theory of fractal geometry is applied to the waves propagation and scattering in atmospheric turbulence, and the first and second order moments of the scattering fields are derived by considering the effects of the fractal atmospheric turbulence. the normalized back - scattering radar cross section of a perfectly conducting disk is calculated. the influence of fractal dimension of atmospheric turbulence on the radar cross section is analyzed

    本文最後將分形理論引入到湍流大氣中的波傳播和散射領域，導出了分形大氣湍流中光滑導體目標散射場的一階矩和二階矩，以光滑導體圓盤為例研究了湍流大氣的分維對導體目標後向散射截面的影響。
  12. We first introduce the second order phase transition theory in the general thermodynamical system, and make a brief summary of the about investigations of the second order phase transitions in stationary black holes in the recent years

    在第一章中，我們首先介紹一般熱力學系統的二級相變理論，描述了相變的一些主要特徵。然後簡單地回顧了黑洞熱力學中的一些基本概念以及近年來對黑洞二級相變的一些研究狀況。
  13. ( 4 ) an analytical theory is developed for predicting the second - order hot - image formation, which is focused by the negative second order diffraction of the fraunhofer hologram. further, the image location and its intensity are derived

    （ 4 ）理論預言了「二階熱像」效應，並解析求出了「二階熱像」的成像位置，成像平面的光波復振幅分佈以及近似強度表示式。
  14. In this paper, the nonclassical properties of two two - level atoms interacting with a single mode light field is studied by means of the quantum theory without rotating wave approximation ; the influences of the yirtual photon process on the mean photon number, the degree of second order coherence of field, the evolution of the field entropy and the squeezing effect are also discussed

    本文利用全量子理論，研究了非旋波近似下「耦合雙原子-單模光場」相互作用過程中光場所表現出的非經典性質，研究了虛光子過程對場的平均光子數、二階相干度、場熵演化特性及光場壓縮效應的影響。
  15. 4. using the bielecki ' s norm and the index theory of fixed points in a cone, we study the existence of positive solutions of boundary value problems for second order functional differential equations on infinite intervals

    利用bieleck ' s范數和錐上的不動點指標理論，我們研究了無窮區間上二階泛函微分方程邊值問題的正解的存在性。
  16. By means of variational structure and z2 group index theory, we obtain multiple solutions of boundary value problems for second - order ordinary differential equations and lower bound estimate for number of the solutions

    摘要本文利用變分原理和z2不變群指標研究了一類二階常微分方程奇異邊值問題的多重解，得出了這類解個數的下界估計。
  17. These second order questions of normative legal theory are a subclass of the more general class of second order questions of moral and ethical theory

    這些規范法理論的二階問題是更為一般的的道德與倫理理論的二階問題的的子類。
  18. The basic concepts of second - order coherence theory in describing wavefields are introduced. these concepts are the cross - spectral density function and spectral degree of coherence in the space - frequency domain, and the mutual coherence function and the complex degree of coherence in the space - time domain

    介紹了二階相關理論中描述光場相干性質的基本概念，包括空間-時間域中的互相關函數、復相干度和空間-頻率域中的交叉譜密度函數、光譜相干度。
  19. Point to the limitation of existing method, the neural computation method of finite element of elasticity - plastic mechanics was studied on the base of variational principle of the second order minimal potential energy in plastic theory. the neural network solving method of elasticity - plastic mechanics based on variational principle of the second order minimal potential energy was presented, and the neural network computation model of finite element of plastic mechanics was given

    針對已有方法的局限性，以塑性理論中的二階段最小勢能變分原理為基礎，對彈塑性力學問題的神經網路有限元計算方法進行了研究，提出了基於二階段最小勢能變分原理的彈塑性力學問題的神經網路求解方法，建立了塑性力學問題的有限元神經網路計算模型。
  20. The working principles are as follows : when the factors of the second order mechanics model are proper, the relative displacement, body to shell, is linear to the acceleration of shell. so the acceleration of the second order system is measured by measuring the relative displacement with the optical reflection displacement theory

    其工作原理是：當二階力學模型的參數選擇適當時，力學模型中的質量塊相對外殼的相對位移與外殼的加速度近似成線性關系，所以採用光纖反射式位移傳感原理測量二階力學模型中的相對位移就可以達到測量二階系統加速度的目的。
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