量化字長 的英文怎麼說

中文拼音 [liánghuàzìzhǎng]
量化字長 英文
quantization word length
  • 量 : 量動1. （度量） measure 2. （估量） estimate; size up
  • 字 : Ⅰ名詞1 （文字） character; word 2 （字音） pronunciation 3 （字體） form of a written or printed ...
  • 長 : 長Ⅰ形容詞1 （年紀較大） older; elder; senior 2 （排行最大） eldest; oldest Ⅱ名詞（領導人） chief;...
  • 量化 : quantization量化器 quantizer; digitizer; 量化失真 quantizing distortion; 量化條件 quantum conditi...
  1. At last the algorithm of ddmf is achieved by the investigation tool of altera company ? quartus ii and the vhdl language, and its ip core is also achieved which is used not only in the satellite navigation position system, but also in the long pn code dsss system. ddmf investigated in the dissertation gives a good way to design the rapid pn code acquisition in the beidou project, and the technology has the definite theory and practice significance

    此外還應用altera公司的最新的fpga開發工具quartusiiv5 . 1 ，採用了國際標準的硬體描述語言? vhdl語言，對數字差動匹配濾波器和傳統匹配濾波器演算法予以實現，開發了該演算法的軟ip核，可以對所應用的擴頻碼長度， a / d采樣后的數據量化階數，所用擴頻碼等可進行隨意改寫。
  2. Several materials with large coefficient of expansion were selected to make packaging components, and it was found that the packaging materials have good temperature sensitivity and compatibility with optical fibers. experimental accuracy and repetition of fbg temperature sensitivity and compensation were discussed. have selected several materials which has bigger coefficient of expansion to do packaging components, have made many temperature experiments, there have not flaws, such as aging, crackle, absciss layer, packaging materials have good temperature sensitivity and compatibility with optical fiber ; have designed the simple and practical packaging components, have performed a serials of experiments about accuracy and repetition of fbg wave - length, have obtained the first step conclusion ; have analyzed the result and made comparison between the result of different experiment, have summarized the best packaging effect and several rules to reduce mistskes

    本文所做的主要工作包括以下幾個內容：一、選取了常見的熱膨脹系數大的材料製作封裝元件，經過多次一80到80反復測試，封裝元件沒有出現老化開裂、封裝裂紋、空洞、離層等缺陷，封裝材料具有良好的溫敏穩定性及復用性，與光纖相容性較好；二、對光纖光柵進行簡單、實用的封裝處理，就封裝效果的優劣性、波長測量的準確度、重復性和封裝時產生的波長損失等方面進行了一系列的實驗，得出了初步的結論；三、對溫敏和溫度補償式封裝的實驗數據進行了詳細的分析和對比，從數字上對溫變過程中光纖光柵中心波長的改變及溫變曲線進行了定量的分析，在大量實驗數據分析結果的基礎上，總結出哪種材料封裝效果更好，以及如何有效的減小實驗誤差。
  3. With advances in communication and information processing technologies, the video - driven application show a very large degree of flexibility and extensibility. visual communication is the fastest growing vehicle for information. a lot of digital applications and services are emerging, such as : digital tv, teleconference, videophone and interactive multimedia

    隨著通信和信息處理技術的發展，基於視頻的應用呈現出強大的靈活性和可擴展性，視頻通訊已經成為增長最快的信息載體，大量數字化的視頻服務需求不斷涌現，如：數字電視、遠程會議、視頻電話和互動式多媒體等。
  4. For a long time, the deviation, lying in grasping the purpose of traditional primary school word - learning teaching in china, has led to several serious problems in the teaching : ( 1 ) a few words ( 2 ) mechanical memorizing ( 3 ) memorizing in detail ( 4 ) one sided assessment, etc. consequently, all this results in the situation of small quantity, slow speed, bad effect and time consuming " in primary school word - learning teaching, which affects the whole word - learning, which affects the whole chinese teaching negatively

    長期以來，我國傳統的小學識字教學在目的把握上存在偏差，導致在教學中出現一些嚴重的問題：識字量少（達不到閱讀的要求） ；機械識記（死記硬背，易忘，負擔重） ；精細識記（識字過程分析講解居多，整體認讀難，在閱讀過程中無法做到「識字自動化」 ） ；評價片面（單純以能寫會默為評價標準） ，等等。因而造成了小學識字教學「少慢差費」的狀況，對整個小學語文教學帶來了很大的負面影響。
  5. The services of electric power communication network have already expanded from telephone scheduling and transmitting data in low speed to digital user ' s service with high speed and great capacity, such as computer internet, wide area network and video transmission, etc. its structure has already developed from simple star topology, which is used to serve schedular center, to today ' s multicenter network to assure that the network can serve the requirement of increasing transmission of electric power information

    電力通信網的業務已從調度電話、低速率遠動數據傳送擴展到高速、數字化、大容量的用戶業務，例如計算機網際網路、廣域網、視頻傳送等。電力通信網的結構也已從單一服務于調度中心的簡單星形方式發展到今天多中心的網狀網路，以保證能為日益增長的電力信息傳輸需求服務。
  6. In chapter 4 we discuss the design of the high speed and high performance vlsi and its imp1ementation, firstly we ana1yze and compare the features and ru1es of al1 kinds of fft algorithm, adopt complex radix 4 butterfly calcu1ation as basic alu, then discuss all kinds of process architectures, the design thoughts, rule, method, technique way, the characteristics of the design are r4 dit algorithm, pingpong ram design method and pipeline structure between stages. we also analyze the limited word length effect and the method to avoid overflow of the fixed points fft process, bring out the expandable platform mode

    第四章主要討論了高速高性能的快速傅立葉變換處理器的設計和實現，首先分析和比較了各種快速傅立葉變換演算法的特性和規律，提出基4蝶算的演算法具有最好的性價比，討論了順序、級聯、并行和陣列的處理結構，闡述了設計高速高性能快速傅立葉變換處理器時的設計原則、設計思路、所採用的技術路線，驗證並測試fft處理器，分析了定點fft處理過程由於有限字長效應所產生的量化誤差的范圍及防溢出控制辦法，提出了可擴展平臺模式。
  7. Fibre optic communication subsystem test procedures - part 2 - 10 : digital systems - time - resolved chirp and alpha - factor measurement of laser transmitters

    纖維光學通信子系統試驗程序.第2 - 10部分:數字系統.測量激光發射器的時間分辨激光波長變化和因子
  8. On the other hand, in the approach based on vector - matrix, through several special operations on vector - matrix, we have constructed a sparse ‘ 0 ’, ‘ 1 ’ parity - check matrix with dual diagonal matrix whose structure can easily construct the code. the simulation results have demonstrated the performance of this approach is similar to that of - rotation while the complexity is also higher. this problem is to be solved in the future research

    在基於矢量矩陣的結構化方法中，通過對矢量矩陣進行一系列特殊處理可以構造出稀疏的『 0 』 、 『 1 』校驗矩陣，而校驗矩陣中的雙對角結構易於構造出相應的ldpc碼字，模擬表明，採用矢量矩陣的結構化方法具有和-旋轉構造法相當的性能，但是實現的復雜度大於-旋轉構造法，同時碼率和碼長受到一定的限制，這也是未來需要研究的方向。
  9. The characteristic parameters of effective debris in a ferrograph have been calculated in the present thesis, like area, perimeter, aspect ratio and granularity, in which some methods have been adopted such as smoothing, filtering and thresholding and so on, according to tribological theories and computer technologies and digital image preprocessing

    本論文基於摩擦學原理和計算機技術，通過對鐵譜片進行數字化圖像預處理，採用對譜片圖像的平滑、濾波以及閾值二值分割等方法，計算出譜片中特徵磨粒的一些特徵參量，如面積、周長、粒度以及縱橫比等。
  10. The first part mainly introduces the gis concept and contents of gis, the comparison between the related software and gis, the present condition and development trend of gis etc, then introduced how to use the gis technique in a specific way such as using the method of " the half - automatic to follow " to turn the map into arithmetic figure, using the method of " the automatic calculates " gets the length of the line and area of field etc, at last got the length and width of every cross section of the fabiela river which is located downstream of xiangshan mountain. this method is superior and time - saving comparing with collecting data on the spot, having important and actual application worth

    第一部分主要介紹了gis的概念和研究內容， gis與相關軟體的比較以及gis的現狀、發展趨勢、當前gis研究的熱點等等，然後具體介紹了用gis的相關技術如：用「半自動跟蹤」方法對地圖進行數字化，用「自動量算」方法得到線對象的長度、面對象的面積等，最終完成了象山水庫下游法別拉河河道地形數據資料的提取工作，這種方法與人工實地採集工作相比，有較強的優越性和重要的實際應用價值。
  11. The detector of intelligent oxygen analyzer based on zirconia mentioned in this paper has a lot of characteristics such as easy maintenance and long life. the controller combines temperature control, digital display, analog output, temperature calibration, high temperature protection and other functions together,

    本文設計的智能型氧化鋯氧量儀的檢測器具有維護方便、使用壽命長的特點;其控制器集溫度控制、數字顯示、模擬輸出、溫度修正和超溫保護等功能為一體，具有高精度數字顯示的模擬輸出功能。
  12. In this paper, we summarize the present testing level of optical aspheric surface, expound the principle of laser wavelength scanning interference testing method, and analyze the laser that can be tuned, and we also study the change of wavelength. further more, we achieve the elementary design of experiment device, curtly introduce the method for interference fringe processing and image processing by matlab

    本文對目前國內外的光學非球面的測量現狀作了概略的敘述，給出了激光波長掃描干涉測試方法的原理，對波長可調諧的激光光源進行了分析，對激光器波長的變化進行了研究，對實驗裝置進行了初步的設計，對干涉條紋圖處理方法進行了研究，並通過編寫matlab軟體語言對干涉圖進行了數字化處理。
  13. One is to use fourier transformation to convert the source signal from time domain to frequency domain and to discard high frequency harmonious components upwards of 19 ( gb / t14953 - 93 d5. 3 demanding ), then to have static huffman coding to the quantized char array which is composed of reserved direct current component and basic wave and each high frequency " s amplitudes and angles. the other is to use discrete wavelet transformation to convert the source signal from time domain to frequency domain and to set the high frequency coefficients that its absolute value is smaller than the given threshold to zero, then to have dynamic huffman coding to the quantized char array which is composed of multiple, wavelet ' s level, datum length, low frequency coefficients and reserved high frequency coefficients. mass simulinks and analyses under the two circumstances have done to show that data compression ratio is small and the relative error is also small and within the permission of engineering and the compression problem can be solved in theory of measured datum of power system

    第一種情況的壓縮方法為：採用傳統的傅立葉變換把原始信號從時間域變換到頻率域，舍棄20次及其以上的高次諧波成分（保證了gb / t14953 ? 93d5 . 3要求） ，然後對保留的直流分量、基波和各次諧波的幅值和相角數據量化后和量化時分別乘以的倍數系數構成一個數組，以字元形式保存，採用靜態huffman編碼對變換數據進行壓縮；採用離散小波變換把原始信號從時間域變換到頻率域，然後對分解得到的高頻系數進行閾值量化處理，對乘以的倍數系數、小波變換的階數、小波變換后的低頻、各級高頻以及原始數據長度、量化后的低頻系數以及保留的高頻系數大小、位置構成一個數組，以字元形式保存，採用動態huffman編碼對這個文件進行壓縮。
  14. The paper includes five parts, begins with the concepts of internet, internet education and internet college, in this way make the research position clear ; then present a brief study of the internet college ' s rising and history, divides its development phases by the term of technology and culture, briefly introduce its current situation, such as its scope, organizer, education type, system and fee - charging, etc ; then according to internet college operation process, take four factors to present a detailed analysis, they are : education needs, education service, organization administration and quality guarantee ; thereafter is a prospect of internet college ' s future development ; the technical innovation of internet college, its culture development and the structure of a learning net in a digital time ; finally after a brief summary of the whole paper comes a presentation of the problems the internet college facing in its operation

    文章共五個部分，首先由對網路、網路教育、網路大學的理解開始，明確論文的研究立場；接下來對網路大學的興起作簡單考察，從技術與文化的角度粗略劃分其發展階段，並簡要描述當前狀況，如規模、舉辦者、實施教育的類型、學制與收費等；然後再根據網路大學運行的過程，選擇其中從教育需求、教育服務、組織管理到質量保障四個要素加以分述；之後從網路大學技術的革新、網路大學文化的滋長與數字時代學習網路的構建三個方面對網路大學的發展略作展望；最後對前文作簡單結論的基礎上就網路大學的特性、教學及運行等方面問題進行一些討論。
  15. Measurement and characterization of surface texture is an important aspect of precision metrology. historically this has involved partitioning a profile into different wavelength regimes referred to as roughness, waviness and form followed by numerical quantization. parameters computed are then inspected for tolerance compliance to ensure a part performs its intended function. this approach is satisfactory when the specification has been carefully determined and the process is stable. however, when the manufacturing process is under development or when instability or modifications to the process invalidate specifications, there is a need to study surface finish parameters in relation to functional performance or process measures. in this context, the problem of surface texture classification and recognition are discussed. advanced techniques developed for this purpose along with applications are presented. also, the techniques discussed here will be useful across large bandwidth, from the characterization of nano scale to traditional micro scale surfaces

    表面結構的測量與特徵描述是精密計量技術的一個重要方面，傳統上包括將輪廓情況根據不同的波長范圍劃分為粗糙度、波紋度和形狀及后續的數字量化.按算得的參數檢查它是否為公差允許，以保證零件執行其指定的功能.當技術特性已經經過仔細確定，並且其過程穩定時，該方法是令人滿意的;但是，當製造過程正在進行中或過程的不穩定、過程變化使技術特性失效時，就需要研究和功能表現及過程評定相關的表面參數.討論了表面結構的分類與識別問題.同時闡述了為此目的而開發的先進技術及其應用.所研究的技術對從納米尺度到傳統的微米尺度的較大帶寬范圍內的表面特徵描述都是有效的
  16. A property that can be quantitatively described, such as the volume of a sphere or the length of a vector

    可量化的值可以用數字形式描述出來的特性，例如球體的面積或者向量的長度
  17. The main research content of the article is involved as follows : ( 1 ) the research and discussion of the quantitative metallographic analysis methods and the measuring methods of micro hardness. ( 2 ) the application of digital image technique in metallographic image preprocess such as gray level transformation, dichotomy, noise eliminating, dilation and erosion, image enhancement, boundary detection, etc. the application of the wavelet and multi - resolution analysis in metallographic image procession to improve the measuring accuracy and efficiency. the application of the region growth and mathematical morphology in analyzing image parameters to improve the flexibility and exaction

    本文的主要研究內容： （ 1 ）定量金相分析和顯微硬度測量的方法研究； （ 2 ）利用數字圖像處理技術，實現金相圖像的灰度轉換、二值化、噪音消除、膨脹收縮、圖像增強、邊緣提取等預處理；引入小波理論、基於數學形態學的區域生長法對采樣圖像進行分析，實現了對採集圖像邊緣的有效提取，從而提高了測量精度； （ 3 ）開發了金相圖像分析系統的主體結構（硬體結構和軟體結構） ； （ 4 ）採用windows開發平臺的面向對象程序設計語言microsoftvisualc + +進行系統的模塊化設計； （ 5 ）提出了採用多模式的知識表示方法建立知識庫，應用正反推理、模糊數學模型、基於規則的模式匹配模型建立金相分析專家系統。
  18. We supply chips pots, spiral paper pots, environmental protective paper cups, paper boxes, paper tubes, clothing tags, gift boxes, food containers, paper hand - bags, tea tins, cosmetics boxes, wall calendar tubes, powder pots, paper prints, paint pots, wine packing, paper packing products, paper printing, multiple material packing products with good quality and low price

    詳細說明：本公司專業生產各種不同直徑，長度，款式的復合紙罐和全紙罐.復合罐用於食品、糖果、干貨、酒類、茶葉、種子、飼料、香料等產品的包裝.全紙罐適用於各類產品如化妝品、內衣、火柴、玩具、精密儀器、字畫工藝品以及禮物飾品的包裝.質量優，價格低。
  19. The fifth chapter analyzes the fixed - point error of bp - based and normalized bp - based decoding algorithm, and gives the final simulation results of each decoding algorithm. with the simulation results and the considering the tradeoff between hardware complexity and error performance, some key parameters and finite precision analysis for the hardware implementation of ldpc decoder have been performed

    第五章對bp - based和normalizedbp - based演算法進行了定點模擬，對ldpc譯碼器的關鍵參數、硬體實現中的定點量化與字長精度問題進行了深入的研究，給出了對譯碼器硬體實現具有參考意義的研究結果。
  20. It is a pop method to embed watermark in frequency field, in most literature, they embed watermark into the coefficients of fft, dct, or high - frequency of dwt using quantization method, we think that : embedding watermark into the low - frequency of audio signal dwt field can improve the robustness of watermark. the watermark is embedded in the maximum of subsection of approximate component the watermark signal using quantization method, for the same quantization size, the “ noise ” added to the signal is

    在頻率域嵌入水印信息，是目前一種主流的嵌入演算法，在很多文獻中，都是通過量化音頻信號的ftf系數， dct系數，或者是dwt域的高頻系數。我們認為:在小波域內的近似分量（低頻系數）中嵌入水印能夠提高數字水印的魯棒性，通過量化嵌入水印的方法，將水印嵌入到近似分量中每個分段中最大值上，因為這樣對于同一個量化步長，量化對象的幅值越大，所疊加的「噪聲」就越小，從而提高了數字水印的不可感知性。
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