dfa 中文意思是什麼

For this purpos, from the point of the log geology, aimed at the actuality of the current fractured reservoir log geology interpretation and evaluation, based on synthetical analysis of the current domestic and foreign fruit of fractal dimension investigation of reservoir fracture, using the method and technique of fractal dimension, through the further discussion of the fractal dimension characteristics of m index and n index in the log interpretation archie model in a sample way and through the theoretic reasoning to the fractal dimension dfa and m index of fractured reservoir interval ' s log curve, according to the geophysical signification of the fractal dimension dfa of fractured reservoir interval ' s log curve shape : the more complicated the change of the curve shape is, the larger the its dfa value is, then the more complicated space structure of fracture and pore, then the higher value of m index of space structure of fracture and pore, and so on, the text propounds an improved method, based on box dimension, of covering log curve with scale grid, and by programming computes the dfa and its m index value of fractured reservoir interval ' s log curve, for instance, ac and rt curve, ect, then further puts this technique into application investigation, and makes analysis of application effects in the reservoirs located in l area of qx oil field from three aspects : 1. the dfa and its m index value of fractured reservoir interval ' s log curve, for instance, ac and rt curve, ect, which are derived from computing, is used to identify reservoir type by crossplotting m index with the product df _ acrt of fractal dimension of acoustical wave log curve and restivity log curve and by experiential discriminance plate of reservoir type in l area of qx oil field

因此，對該區裂縫性儲集層的類型識別、孔滲特徵的測井地質解釋以及儲層裂縫的發育和分佈規律進行深入的研究便成為本文研究的出發點。為此，本文從測井地質的角度，針對當前裂縫性儲層測井地質解釋與評價的現狀，在綜合分析當前國內外儲層裂縫的分形分維研究成果的基礎上，利用分形分維方法和技術，通過對archie測井解釋模型中的m指數、 n指數的分形分維特性的深入淺出的論述以及裂縫性儲層段測井曲線分維d _ （ fa ）與m指數的理論推導，根據裂縫性儲層測井曲線形態分維值的地球物理意義? ?曲線變化越復雜，則其分維值d _ （ fa ）越大、裂縫孔隙空間結構越復雜、裂縫孔隙空間結構指數m值越高等特徵，提出了改進的基於盒維數的測井曲線網格覆蓋法，編程計算了裂縫性儲層段常規測井曲線（如聲波和電阻率曲線）上分形分維值及其m指數值，進而從以下三個方面對qx油田l區塊的裂縫油藏進行應用研究，效果十分理想： 1將計算得到的可變的m指數與聲波和電阻率分維之積df _ acrt進行交繪，採用儲層分維值分類技術統計分析這些參數變化的規律，並結合qx油田l區塊儲層類型經驗判別圖版，從而實現qx油田l區塊下白堊統的裂縫性儲層的類型識別。

Tray 5 : optional roll : supports dfa standard paper roll optional

-大容量紙盒四號紙盒：容量2600頁75克紙張選配

Constraints on the choices of assembly plans in the dfa within concurrent engineering

面向裝配設計中裝配方案的選擇

Recall from our discussion last month that a dfa is a transition diagram

回憶上個月我們所討論的， dfa是一個轉換圖。

The number of states grows when the dfa attempts to recognize more xpaths

當dfa試圖識別更多的xpath時，狀態的數量也會隨之增長。

Design for assembly ( dfa ) is an important enabler in concurrent engineering

摘要面向裝配的設計是并行工程中的一項重要的使能技術。

I need to finalize the dfa compilation before i have anything new worth posting

在值得張貼一些新東西之前，我需要最終處理dfa編譯。

The running mode and system of dfa are discussed. the content of assembly modeling is provided

對面向裝配的設計的原理和方法進行了研究。

If you have a copy of the book handy, the dfa construction is algorithm 3. 5

如果您手邊有這本書，那麼這個dfa構造使用的是這本書中所講的演算法3 . 5 。

The dfa, after finding the documents complete and in order, indorses the documents to the philippine foreign service post located at or having consular jurisdiction over the student s country of origin or place of residence for issuance of the student visa after ascertaining the student s identity and admissibility in accordance with dfa regulations

外交部在確認這些文件完全無誤之後，批準給學生的國家或居住地的菲律賓外交辦事處或有領事權的辦事處，在根據外交部的規則判定學生的身份和資格之後，簽發留學生簽證。學生請求在學生國家或居住國之外簽發簽證將不予以理睬。

All study tasks in these research fields are imbued with challenges and enthusiasm, however they are still a virgin soil in our country, which give me the very impulsion to explore the mystery. the purpose of this paper is to provide an overview of dfa and its usage in a non - life insurance context

但是國內關于動態財務分析的研究幾近空白，而本文正是對dfa的起源、發展以及應用等方面進行了一個比較綜合、詳細、完整的論述，構建了一個相對完整的理論研究框架，為以後進一步的研究提供了一種思路。

First of all, the assembly model of dfa is established and the data structure of the model is proposed ; in order to redesign product and structures and select optimized assembly plans, an assemblability evaluation system is constructed. secondly, assembly process planning is analyzed, including assembly path planning and assembly sequence planning ; and then the thesis brings forward the way of 11 - tuple to represent the movement of assembly / disassembly of assembly elements. in the end, this paper makes an research on the technology of interference checking, raised a kind of algorithm of swift interference checking based on envelops bounding box decomposition, hence, the accuracy and efficiency of the algorithm is improved dramatically

首先建立了面向裝配設計的裝配模型，給出了它的數據結構；接著從面向產品結構和裝配工藝過程兩方面再設計的角度，構建了裝配性評價體系；接著闡述裝配工藝規劃技術，包括裝配路徑規劃和裝配順序規劃；然後提出了11元組法來表示裝配元件的裝拆運動；最後對干涉檢驗技術進行了研究，採用一種基於包容盒逐層的快速干涉檢查演算法，提高演算法的精度和效率。

The design for assembly ( dfa ) is an important enabling technology in concurrent engineering. g boothroyd and p. dewhurst of university of massachusetts firstly gave this terminology when they applied a method to evaluate the performance of product assembly design. dfa evaluation method is still developing with the deep research of concurrent engineering

Dfa這一術語，最早是由美國馬薩諸塞大學（ universityofmassachusetts ）的gboothroyd和p . dewhurst提出的，當時主要採用的是計算評分的方法來對產品的可裝配性進行定量的評價。

Taking full consideration of the factors effecting on product assembly design and satisfying the performance of product, dfa in concurrent engineering applies many techniques like analysis, evaluation, planning and simulation in the product development process to improve the quality of product assembly design and reduce the cost in the assembly process and the total cost of product. the dissertation is divided into six chapters and the detail contents are summarized as follows : chapter one is introduction

隨著并行工程研究的逐步深入， dfa技術也在不斷的發展之中，它通過在產品設計過程中利用各種技術手段，如分析、評價、規劃、模擬等，充分考慮產品的裝配環節及其相關的各種因素的影響，在滿足產品性能與功能的條件下改進產品裝配結構，使設計出來的產品是可以裝配的，並盡可能降低裝配成本和產品總成本。

Based on multiple patterns match algorithm - deterministic finite state automata ( dfsa ), a dfa has been designed, which can identify multiple kind numbers

摘要基於有限自動機的多模式匹配演算法（ dfsa演算法） ，設計出同時識別多種數的有限自動機。

The third chapter is the study of dfa modeling, which probes into such research fields as modeling components in dfa model, applicability of scenario analysis and stochastic simulation, building structure of dfa model, and how to use the dynamo 3. 0 dfa software, etc. the fourth chapter discusses the application of dfa in financial management fields, especially in financial forecasting, of our country ' s insurance companies

該部分內容對保險公司「動態財務分析模型」的模型要素；情景分析、隨機模擬方法的適用性；保險公司動態財務分析模型的構建；以及dynamo3 0動態財務分析軟體的使用等問題，做了深入的分析和思考。第四章著力探討動態財務分析在保險公司財務管理中的應用問題。

The effect of assembly tolerance on product assembly is researched in detail and the algorithm and program of total assembly cost is presented. chapter five researches on the application of dfa method

最後對裝配公差對產品可裝配性的影響作了詳細的闡述，並給出了產品的總裝配成本計算的方法。

In chapter 3, firstly, we do some demonstration on the long memory character and the statistical cycle of the return series using the r / s analysis method and the dfa method, and we do some research on the stability of the r / s analysis method, the difference and the contact between the two methods too. secondly we account the characteristic index and the tail index of the fractal distribution, we do some demonstr - ation study on the tail index of our country ’ s return series. lastly we summarize the results of our demonstration

第三章中，首先運用r / s分析法和dfa法對中國股市收益率的長記憶性和統計循環周期進行了實證研究，並且研究了r / s分析法的穩定性以及r / s分析法與dfa法的區別與聯系，其次我們論述了分形分佈中的特徵指數以及尾部指數，對中國股市收益序列的尾部指數進行了實證研究，最後總結了實證研究的結果。

As future development trend of asset - liabilities - managemen ( talm ) technology of insurance company, dfa can not only be competent for comprehensive and holistic forecasting task of insurance company ’ s operation and financial status, but also can help national insurance industry build the most preliminary, and probably the most effective financial risk forewarning system, by dynamically scrutinizing assets and liabilities conditions changes of insurance company

而從保險公司經營管理的角度來說， 「動態財務分析」方法則絕非僅只是靜態地考察資產負債表的某項部分（如負債中的準備金） ，而是在較廣泛的區間內監控保險公司的整體財務狀況，並在不確定和變化的市場環境下考察保險企業的財富變化。

Abstract : data flow anomalies ( dfa ) are those anomalies related to the accessing and updating of data items in a program. the conventional dfa detection techniques alone can not be used to identify the data flow anomalies associated with the instance variables defined in a class. in this paper, a method for identifying the data flow anomalies present across the methods of a class is proposed. the method sequence specification ( mtss ) is used in conjunction with the conventional dfa detection techniques to identify the data flow anomalies in classes. this technique can ensure that there are no data flow anomalies present across methods in a class if the methods are invoked in such a way that they are compliant with the method sequence specification

文摘:數據流異常是指程序中與變量使用有關的不合常規的「可疑」情況.僅靠傳統的數據流異常檢查技術不能發現面向對象程序中與實例變量有關的數據流異常，將方法序列規范與傳統的檢查技術結合起來，提出了一種能檢查對象的實例變量的數據流異常的方法.當類中方法的調用順序符合該類的方法序列規范時，應用提出的方法能保證發現所有的介於不同方法之間的數據流異常