recursive structure 中文意思是什麼

Iir filters are a kind of digital filters with recursive structure and are primarily used for high data throughput applications that can tolerance phase distortion and require a sharp cut - off characteristic

本文討論的iir濾波器是一種遞歸結構的數字濾波器，主要用於能夠容忍相位失真而要求具有良好的衰減特性的高數據處理量的系統中。

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。

Moreover, the block time - recursive 2 - d rdgt algorithms and their unified parallel lattice structure implementation are extended from 1 - d rdgt case. three applications of the rdgts are investigated : gabor representation for transient signals via the rdgts, mnr fid signal enhancement via the oversampled gabor transforms, representation and approximation of time - varying systems via the rdgts. the experimental results show the efficiency and advantages of the rdgts in applications

研究了基於實值離散gabor變換的瞬變信號表示演算法、基於過抽樣實值離散gabor變換的核磁共振fid信號增強演算法以及基於實值離散gabor變換的線性時變系統表示與逼近方法，實驗結果驗證了實值離散gabor變換在應用方面的優越性和有效性。

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。

The crossed cube is a variant of the hypercube, and it has better recursive structure, graph parameters and topological properties

摘要交叉立方體是超立方體的一個變種，具有良好的圖參數、拓撲性質和結構遞歸性。

An implementation of operation of bom with tree structure using recursive strategy

展開的樹型結構操作

This paper makes researches on pdm ' s kernel function - pcm ( product configuration management ) under the conditions of autocad and low - price dbms witch could be acceptable in our middle or small factories. this paper mainly discusses the recursive query algorithm based on general database witch is offered in oracle, the problem of the automatic bom maker for autocad and conversion from bom to product structure trees. thus the data of autocad files could go into erp ( enterprise resource plan )

本文從pdm理念出發，在我國中小企業普遍能接受的autocad和低價位數據庫管理系統的平臺條件下，對pdm的核心技術模塊pcm （產品結構管理）的實現進行了研究，重點解決了在一般數據庫中實現數據庫系統oracle中具備的遞歸查詢演算法， autocad環境下bom表的自動生成技術，以及bom表向產品結構樹的轉化問題，從而使cad數據通過bom表的橋梁作用進入erp （企業資源計劃）系統。

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。

The recursive equation of structural physical parameters of shearing system are developed to identify the floor mass and stiffness, which only uses any two identified modes and the total mass of the structure

建立了剪切型結構系統結構參數識別的遞推方程，該方法僅利用結構的總體質量和任意兩階模態信息就可以識別出系統的結構參數。

After introducing the unified model structure and applying stochastic approximation principle, the general recursive identification algorithm of several on - line identification methods is developped

在引進統一的模型結構以後，利用隨機逼近原理，提出了各種在線識別演算法的一般遞推形式。

Firstly, defines special structure as inner storage of discipline theoretic knowledge and analyze knowledge basing on recursive and / or tree

定義了特殊結構來實現學科理論知識的內部存儲，並基於遞歸與或樹模型對學科理論知識進行分解。

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。

The translation process from basic and complex asn. l modules into idl that includes default clause, optional clause and asn. l recursive definition is also shown. the implementation of the mib structure presented in the dissertation plays an important role in developing the platform of military network management. besides, the application of corba technology in tmn framework and the corresponding mapping algorithm of management information, provide efficient tools to develop the distributed network management in future

由於mib是網路管理系統的核心，因此本文提出的klb結構的實現方法對軍事網路管理開發平臺的研究具有非常重要的意義；另外， tmn和corba的集成研究以及二者在管理信息方面的映射演算法為實現分散式網路管理的進一步研究提供了堅實基礎和可靠工具。

The structure of the recursive cte in transact - sql is similar to recursive routines in other programming languages

Transact - sql中的遞歸cte的結構與其他編程語言中的遞歸常式相似。

Symptoms : a program that performs a recursive descent over a data structure throws a class - cast exception

癥狀：在數據結構上執行遞歸下行時拋出類強制轉換異常。

The gnu file utilities fileutils can do recursive directory deletions and directory moves, but before v4. 1, it simply followed the ". " special entry as it walked the directory structure

Gnu文件實用程序（ fileutils ）可以完成遞歸目錄刪除和目錄移動，但是在版本4 . 1之前，當遍歷目錄結構時，它只是簡單的遵循「 . . 」這個特殊條目。

There is an intrinsic recursive relationship in the bill of material structure that indicates the relationship between a parent product and the components that make up that product

物料清單結構本身是一種嵌套結構，指示父級產品和構成該產品的組件之間的關系。