recursive method 中文意思是什麼

Bottom - up parsing implementation with recursive descendent method

用遞歸下降方法實現自底向上的語法分析

This paper analyses the numerical simulation problems of the semiconductor devices deeply. a one dimensional pn junction diode is worked out satisfyingly by the recursive method with the matlab5. 3 software

論文深入的分析了半導體器件的數值模擬問題，利用matlab5 . 3等計算機工具，用解三對角矩陣方程的遞歸演算法，實現了pn結二極體的一維求解，取得了比較滿意的結果。

In this thesis, the concept of " fractal " and the recursive algorithm of fractal structure are depicted. the wavelength - independent character of archimedean spiral antenna and the space filled property of koch monopole are analyzed by the method of moment

本文介紹了分形的基本概念和分形結構的迭代演算法，採用矩量法分析了阿基米德螺旋天線的頻率無關特性和koch單極天線的空間填充特性。

Two block time - recursive algorithms are developed for the efficient and fast computation of the 1 - d rdgt coefficients and for the fast reconstruction of the original signal from the coefficients in both the critical sampling case and the oversampling case. the two algorithms are implemented respectively by a unified parallel lattice structure. and the computational complexity analysis and comparison show that the proposed algorithms provide a more efficient and faster method for the computation of the discrete gabor transforms

首先論證了一維rdgt系數求解演算法和由變換系數重建原信號演算法，不論是在臨界抽樣條件下還是在過抽樣條件下，都同樣具有塊時間遞歸特性，並提出了相應的塊時間遞歸演算法及其并行格型結構實現方法，計算機模擬驗證了并行格型結構實現的可行性，計算復雜性分析與比較也說明了rdgt塊時間遞歸演算法的并行格型結構在計算時間方面所具有的高速和高效性能。

Finally, a method is put forward to construct the nurbs curves on sphere, which extends the de boor recursive algorithm in r3 to one on the sphere by replacing the geodesic distances for the lines and studies their many geometric properties analogous to those in euclidean spaces, such as the differential property, the local property, the parameter invariance under a projective transformation, and so on

兩種方法均給出誤差估計，使逼近螺線可達到任何預先給定的精確階。最後，給出球面nurbs曲線生成演算法：用球面上測地線? ?劣大圓弧代替直線段，將歐氏空間r ~ 3中的deboor遞推演算法推廣到球面上構造麯線。

Recursive stochastic finite element method

隨機結構有限元分析的遞推求解方法

Electronic transport in a quantum - dot superlattice, consisting of an array of negative potential, has been studied by making use of the recursive green ' s function method

摘要用遞歸格林函數方法研究了一種周期排列而成的量子點超晶格結構中的電子輸運性質。

Flood forecasting model based on improved recursive least square method

基於遞推最小二乘改進演算法的洪水預報模型研究

The thesis, applies the auto - adaptive theory to the arithmetic for mese ( maximum entropy spectral estimation ), and presents new lsll arithmetic for mese, which is based on method of the recursive least square with forgetting factor

將自適應理論引入最大熵譜估計的演算法研究中，提出帶遺忘因子的基於最小平方準則的最大熵譜估計lsll格梯型演算法。最大熵譜估計演算法的定階準則研究。

It has been improved. multi - level recursive method include multi - level recursive identification, multi - level recursive prediction and multi - level recursive control

多層遞階方法包括多層遞階辨識、多層遞階預報和多層遞階控制。

Calculation of the energy levels of lithium atom with recursive method

用遞推法計算鋰原子的能量

Using the theories of probability, algebra and number theory comprehensively, we investigate a class of boolean functions with three - valued walsh spectrum in the first part of this dissertation : the properties of the extended semi - bent functions, which are constructed from any two bent functions, are studied, followed by the structure characteristics of the boolean functions satisfying propagation criterion with respect to all but two vectors ; the definition and cryptographic properties of k - order quasi - bent functions are proposed whose walsh spectrum takes on only three values. some sufficient and necessary conditions are offered to decide whether a boolean function is a k - order quasi - bent function ; a special method is presented to construct the k - order quasi - bent functions, whose cryptographic properties are explored by the matrix method, which is different from the method of walsh spectrum and that of autocorrelation of boolean functions ; the application of this kind of boolean functions in the fields of stream cipher, communications and block ciphers is discussed, which shows the great importance of the fc - order quasi - bent functions ; some methodology are proposed to construct the k - order quasi - bent functions, including the complete construction by using the characteristic matrices of boolean functions, and the recursive method by two known k - order quasi - bent functions we further extend our investigation to the ring zp, where p is a prime, and the similar results are presented as far as the p - valued quasi - generalized - bent functions are considered

本文首先綜合運用概率論、代數學、數論等基礎學科的理論知識，並以頻譜理論作為主要研究工具，對一類譜值分佈相對均勻的函數? ?廣半bent函數、 k階擬bent函數和p值k階擬廣義bent函數進行了系統、深入的研究，給出了廣半bent函數定義，並探討了廣半bent函數的密碼學性質；給出了k階擬bent函數和p值k階擬廣義bent函數的定義及等價判別條件；討論了k階擬bent函數和p值k階擬廣義bent函數與部分bent函數和p值廣義部分bent函數的關系，探討了它們的密碼學性質；給出了k階擬bent函數和p值k階擬廣義bent函數的典型構造方法，並將對k階擬bent函數的密碼性質的研究轉化到對一類特殊的矩陣的研究上；利用布爾函數的特徵矩陣原則上給出了k階擬bent函數的一種完全構造方法，還給出了從已有的p值k階擬廣義bent函數出發，遞歸構造變元個數更多的p值k階擬廣義bent函數的方法；初步探討了k階擬bent函數在序列密碼、分組密碼以及通信中的應用；給出了一類布爾函數walsh譜的分解式，並利用這類布爾函數的walsh譜分解式給出了一類近似穩定的布爾函數的構造，特殊情形下為k階擬bent函數；利用代數數論的知識考察了p值k階擬廣義bent函數的譜特徵，並給出了k階擬廣義bent函數與所有仿射函數的符合率特徵等等。

In chapter 3, this paper recommended the methods of estimating the parameter of moving target using cyclostationary and analyzed the performance of this method firstly, and put forward a recursive method for estimating the parameter ( velocity, acceleration ) of moving target combining the characteristic of high - prf pulsed doppler radar. then, based on the resolution of doppler and acceleration, combining the characteristic of the doppler spectrun and acceleration spectrum, this paper put forward a new method for differentiating muli - target

然後，從彈載高重頻脈沖多普勒雷達的多普勒解析度和加速度解析度出發，結合不同編隊方式的多目標回波信號的特點，分析了多目標和單個目標的回波信號的多普勒譜和加速度譜的特性，提出了一種基於一維多普勒像和一維加速度像的級次多目標分辨演算法。

The main content includes : in assembling analysis, three - line - one - row matrixes are obtained by getting the length, width and height of packing cases. any given packing cases are assembled by using pedigree assembling analysis, thus, we can obtain the number of the sorts and the length, width and height of each sort ; in loading a container, the input is any four kinds of them that are just sorted. the chanced packing cases are loaded by using tier up tier principle, side method and recursive method so that we can obtain higher space occupation ; in diagrammatic representation, the result of loading a container is shown in the screen by using simple one - dimension and tow - dimension diagrams

本文圍繞這一主題進行了深入的理論和實踐研究，具體內容有：在聚類分析中，利用譜系聚類分析原理，提取包裝箱的長寬高作為三行一列矩陣，對給定的任意尺寸的包裝箱進行聚類分析，聚類后，得到聚類的個數和各類的長寬高；在方案生成中，選取了聚類后其中的任意四種作為方案生成的輸入，利用層疊原理，邊際方法，遞歸原理對選取的包裝箱進行裝箱，以達到佔有率較高的目的；在圖形顯示里，對方案生成結果作了一個簡單的一維和二維的示意圖。

The optimization algorithm of loading a container makes use of tier upon tier principle, side method and recursive method

集裝箱裝箱優化演算法利用了層疊原理、邊際方法、遞歸原理。

The natural line drawing is the one with hidden - parts - eliminated. based on the correlative constraints between vertices and straight lines on a planar object, we have proposed a new recursive method for computer interpretation of line drawings under orthographically axonometric projection

在建立了相關約束關系式的基礎上，提出一種基於點與直線的相對位置關系遞歸解釋線框圖的新方法，主要針對的是正軸測投影線框圖的計算機解釋。

The thesis, in the probability analysis and computation, considers the failure history of space frames and trusses, adopts the bound criterion and algorithms on the base of system ' s critical strength, and introduces the soft self - adaptation control bound into the identification of dominant failure modes ; at the same time, with the incremental load method and differential equalized recursive method, computes the limit - state function of failure mode and probability index precisely under no leaking the dominant failure modes

文中在可靠性分析和計算部分，考慮空間剛桁架結構系統的失效演化歷程，採用基於系統臨界強度的約界準則和約界演算法，將柔性自適應控制邊界引入失效模式識別過程；同時，用荷載增量法和微分等價遞歸演算法相結合，確保在嚴格不遺漏主要失效模式的情況下，快速準確地求解失效模式的極限狀態方程和可靠度指標。

( 3 ) adaptive sample algorithm such as predicted covariance threshold method, pre - establish sample interval method, and recursive method have been researched. we especially analyze the advantage and disadvantage of predicted covariance threshold method and pre - establish sample interval method, and present an improved pre - establish sample interval method

分析了當前常用的預測協方差門限法，預先定義采樣間隔法以及遞推法，特別分析了預測協方差門限法和預先定義采樣間隔法的優缺點后，綜合兩者的優點提出了改進的預先定義采樣間隔法。

Firstly, according to the characteristic that the doppler frequency shift signal can be approximated as a single sinusoid signal, the extended sinusoid signal retrieval ( pisarenko and esprit ) methods are presented and signal state and measurement formulations are developed, so the kalman filter recursive method is got. the brief introduction of low velocity moving target doppler frequency shift signal wigner - ville transformation and wavelet transformation expression are presented in this paper. secondly, because the clutter is gaussian distribution, cumement and high - order spectrum based methods are presented and the simulation results prove their good performance to suppress gaussian clutter in low velocity moving target doppler frequency shift signal processing

一個方面是根據低速目標的多普勒信號可簡化為單一正弦波形式這一特點，得到了擴展的高斯色噪聲背景下的諧波恢復演算法，即高斯色噪聲中的pisarenko諧波恢復法和旋轉因子不變法（ esprit ） ；並推導了信號的狀態方程和觀測方程，進而得到基於卡爾曼濾波的遞推演算法對信號進行提取；本文還簡單的介紹了低速運動目標的多普勒頻移信號的wigner - ville變換與小波變換；另一個方面是針對雜波服從高斯分佈這一特點，提出了對接收信號求累積量和高階譜來對高斯雜波進行抑制。

According to the relationship of shannon ' s formula of boolean functions and bdd, the fault tree structure to bdd conversion was accomplished by recursive method

依據布爾函數shannon分解和bdd圖的關系，用遞歸法實現了故障樹向bdd轉化。