短時計數 的英文怎麼說

中文拼音 [duǎnshíjìshǔ]
短時計數 英文
short count
  • 短 : Ⅰ形容詞（空間、時間兩端之間的距離小） short; brief Ⅱ動詞（缺少; 欠） lack; owe Ⅲ名詞1 （缺點） we...
  • 時 : shí］Ⅰ名1 （比較長的一段時間）time; times; days:當時at that time; in those days; 古時 ancient tim...
  • 計 : Ⅰ動詞1 （計算） count; compute; calculate; number 2 （設想; 打算） plan; plot Ⅱ名詞1 （測量或計算...
  • 數 : 數副詞（屢次） frequently; repeatedly
  • 計數 : count; tally; counting計數卡 numbered card
  1. A highly efficient numerical algorithm by using multi - grid method ( mgm ) is introduced to solve the three dimensional field distribution in the present paper. formulae of the restriction and prolongation in mgm computation is deduced, and a 3d program of mgm is accomplished, which can solve the field distributions in electron optical systems for various electrostatic lenses. the 3d field distribution in an electrostatic concentric spherical model is tested with mgm algorithm and an algorithm based on finite difference method ( fdm ) respectively. comparing these two results in view of computational efficiency and computational accuracy, it appears that mgm is superior to fdm in solving electrostatic field distribution for the electron optics problem. this paper shows that the 3d field computation using mgm greatly improves the computational efficiency of field distributions in electron optical systems and shortens the computational time

    本文將一種高效率的數值計算方法? ?多重網格法引入三維靜電場分佈的計算，多重網格法利用限制和延拓可迅速求得滿足精度要求的場分佈.研究了求解各種靜電透鏡電子光學系統三維場分佈的多重網格法程序，驗算了靜電同心球模型的三維場分佈.通過與目前在場計算中常用的有限差分法進行比較，可以看出多重網格法的計算效率和計算精度優于有限差分法.本文表明利用多重網格法計算三維場大大提高了場分佈的計算效率，縮短了計算時間，因此為后續計算打下了良好的基礎
  2. Accordingly, using graph theory and operating experience abroad for reference, it firstly brings forward a new method of voltage rectification which based on pilot bus with voltage control area in view of the weak coupling among every vca ( voltage control area ), using decomposing method of multi critical value, it realizes the eliminating vinculum of every vca. and then, the rectification starts by pilot bus voltage of every vca. so the resolution of whole power net is diverted into calculating smaller sub - net

    由於各個電壓控制區之間無功電壓的弱耦合性，利用多閥值分解的分區演算法，實現區域間的解耦，然後根據各個子網路的主導節點的電壓進行校正，從而把求解整個網路的問題轉化為求解各個小的子網路，降低了網路維數，減少了無功設備控制動作次數，提高了校正成功率，縮短了計算時間。
  3. With the fleet development of mobile communication industry, the security and secrecy of information has been becoming more and more vital. nowadays, the security of communication is of great importance to confirm the safety of business information. on the situation that the mobile phone has been diffusely applied, the hidden safety troubles of mobile phone should not be ignored ( such as wire tapping, imitated handset station, blue teeth connection, in exchange with electromagnetic wave, the back door of handset, lost & stolen & lost control of mobile phone, safety of non - tone increment operation of mobile phone and cell phone virus )

    據統計，目前我國gsm網路[ 1 ] [ 13 ]已覆蓋全國絕大部分地區，用戶數已超過2 . 6億，並且還在高速增長;隨著手機應用的普及，手機存在的安全隱患及面臨的威脅日益突出（如主動竊聽、假冒機站、藍牙連接、電磁波交換、手機后門、手機被盜、丟失或短時失控、手機非話增值業務安全以及手機病毒等） ，手機安全問題已成為當前急需解決的重要問題。
  4. The signal process function of the software include these function : digital filter, windowing, auto - correlation function and cross - correlation function, mean and variance, probability density function and probability distribution function statistic ; auto - power spectrum, cross - power spectrum, frequency response function, coherence function, cepstrum analysis based on fft ( fast fourier transfer ) ; joint time - frequency analysis based on stft ( short - time fourier transfer )

    軟體的處理功能包括：數字濾波、時域加窗、自相關與互相關處理、均值和方差計算、概率密度和概率分佈函數計算；在快速傅立葉變換（ fft ）基礎上計算自功率譜、互功率譜、頻率響應函數、相干函數、倒頻譜分析；基於短時傅立葉變換（ stft ）的聯合時頻分析等。
  5. If the total test duration is shorter than the time that is required to step up to the maximum user load, then the test stops after the elapsed duration and does not reach the max user count target

    如果總的測試持續時間比逐步增加到最大用戶負載所需的時間短，則經過測試持續時間后，測試將停止，並且不會達到「最大用戶計數」目標。
  6. On the other hand, by the statistical analysis of historical flow data, the system can model the network traffic flows, and forecast short - term network flows. after that the system can analyse the network traffic abnormity. by use of the netwok management system and network security facility, we can setup a security infrastructure to monitor flows in real time, predicts the future flows, alarm some abnormal flows, respond to the abnormity automatically and immediately

    論文通過定期採集網路關鍵設備，包括匯聚層和核心交換層的流量情況，處理后以結構化、層次型的方式保存起來，一方面提供了圖形化的用戶介面，將收集的各種歷史數據和實時數據在其中以圖形的方式直觀地顯示出來，另一方面通過對歷史流量數據的統計分析，從而對網路流量進行建模，短時間預測網路流量情況，實現對網路流量異常情況的觀察分析，利用有充分響應能力的網路管理系統和網路安全設備，構成響應和預警的綜合安全系統。
  7. From its realization, the local short - delay interconnection method, the coding symbol synchronization method of multidimensional tcm, and the reliable receiving structure of high - speed dada are advanced

    同時根據工程實踐總結了vd基於網格圖的短時延局部連線設計方法、接收端的多維tcm編碼符號同步方法，設計了高速數據的可靠接收結構。
  8. In the course of design with cad, cae can be applied to improve design structure and capacity, reduce production ' s cost by numerical simulating of models and evaluating of production ' s capacity

    在cad設計的同時，運用cae對產品的幾何模型進行數值模擬，對產品的性能和結構進行評估，從而達到改善設計結構，提高產品性能、縮短設計開發周期的目的。
  9. Analyzed the relationship between the cloud shortwave radiative forcing and the surface net radiative flux, the results were show by means of chart. the satellite grey values were get form the gms satellite data. analyzing the relationship between the cloud shortwave radiative forcing and the satellite grey values, established five regression equations and discussed them, select the best pattern, by which we can estimate the cloud shortwave radiative forcing

    同時利用gms衛星紅外和可見光兩個通道的數字雲圖資料，經過處理，分別得出雲圖的灰度計數值，分析了短波雲輻射強迫和衛星計數值的關系，並運用回歸方法建立了估算短波雲輻射強迫的五種模式，對五種模式進一步討論比較，得到估算短波雲輻射強迫的可用模式，用於短波雲輻射強迫的估算。
  10. Abstract : in this paper we analyse some predictation approaches of random time series and by using arma model we predict effectually the weighted aggregative indexes of securities market in shanghai and shenzhen

    文摘:分析了隨機時間序列的統計預測方法，並利用arma模型對深滬市未來短期指數進行了有效預報。
  11. The calculation method of technical parameters of maximum output power, the short time power and continued power ( equivalent heating ) in electric braking are derived from analyzing the relationship of maximum regenerative power with resistance value of ground absorption equipment, model of traction power supply, train circuit and network voltage drop while performing electric braking

    通過分析列車電制動時的最大再生功率與電阻吸收裝置的電阻值、電制動時刻牽引供電系統的模型、列車電流、網壓降之間的關系，導出了列車電制動時最大輸出功率、地面電阻吸收裝置的短時功率和持續（等效發熱）功率等技術參數的計算方法。
  12. The statistic of wavelet transform coefficient algorithm can solve the periodic noise, high - energy noise and some non - gauss noise simply and effectively ; bi - spectrum can acquire more information from the original signal than power - spectrum, detect more information except from range and restrain the gauss noise. short - time speech signal can be considered as stationary and with periodic non - gauss signal, so we can make use of bi - spectrum to obtain the speech character and separate the speech and noise and detect morse telegraph signal ; complex number spectrum variance algorithm is put forward based on the deeply observing speech data, it is a new algorithm, experiment show that it is simple, effective

    統計演算法在解決周期信號、高能噪聲和高斯信號方面有獨特之處，能簡單有效提取以上噪聲的特徵;雙譜能夠提供比功率譜更多的有用信息，有效地檢測信號幅度之外的其它信息，並能有效抑制高斯噪聲，短時語音信號一般認為是平穩且有一定的周期性的非高斯信號，因而可以利用雙譜來提取語音信號特性並實現信噪分離;復數譜方差演算法是在對語音信號進行深入觀察和分析的基礎上而提出來的一種全新的語音特徵提取方法，此方法簡單而有效的提取了語音、噪聲的特徵以及檢測莫爾斯信號，基於實驗表明，該演算法取得了很好的效果。
  13. Under the condition of " comparatively weak correlation between the two noises involved, coherence function is used as a frequency domain amplification factor for improving snr of the output signal to the filter and the speech enhancement effect. meanwhile, a real - time recursive algorithm is put forward in substitute for current algorithms based on short time fourier transform. the new algorithm will simplify computations and will be suited for real - time implementation together with the adaptive systems

    接著針對上述nanc系統兩路輸入信號噪聲相關性弱的情況，用相干函數作頻域增益因子來提高輸出信噪比與改善語音增強效果，同時，通過一種實時迭代演算法解決了短時傅氏變換計算量大的問題，簡化了計算，便於實時處理與實際應用。
  14. The number of the hidden layers of mul - tilayer perceptrons ( mlps ) is analyzed, and three - layer perceptrons neural network is adopted ; by analyzing the mechanism of the neural cells in hidden layer, a method for combining genetic algorithm and bp algorithm to optimize the design of the neural networks is presented, and it solves the defects of getting into infinitesimal locally and low convergence efficiently, it can also solve the problem that it can usually obtain nearly global optimization solution within shorter time through using genetic algorithm method lonely ; several examples validate that this algorithm can simplify the neural networks effectively, and it makes the neural networks solve the practical problem of fault diagnosis more effectively

    對多層感知器隱層數進行了分析，確定採用三層感知器神經網路;通過對隱層神經元作用機理的分析，引入了遺傳演算法與bp演算法相結合以優化設計神經網路的方法，有效地解決了bp演算法收斂速度慢和易陷入局部極小的弱點，還可以解決單獨利用遺傳演算法往往只能在短時間內尋找到接近全局最優的近優解的問題;通過實例驗證了這種演算法能夠有效地簡化神經網路，使神經網路更加有效地解決實際的故障診斷問題。
  15. The computer simulations show the validity of the models. 3. joint estimation of the time delay and doppler frequency based on short - time fourier transform ( stft ) and time - frequency analysis are studied to estimate the parameters of the underwater target echo

    針對主動回波信號參量的估計問題，重點研究了利用短時傅立葉變換、時頻分析進行時延和多普勒頻移聯合估計，進而進行目標距離和速度參數的估計。
  16. The ball mill load - control apparatus adopted the assembly language and the c51 language to program and its concerned software was designed, including the data collection, the wave - percolation, the short - time average over - zero ratio, the estimation of the power chart and the average - period chart

    磨機負荷控制儀軟體使用匯編和c51編程，本文進行了相關軟體的設計，包括數據採集、濾波、短時平均過零率、功率譜估計和平均周期圖等。
  17. It was demonstrated that this sort of load - control apparatus has superior performance. we used a electric transmitter as the transducer to collect the sound signal, using the daq toolbox of the matlab to achieve the collection of the sound signal, and using the dsp toolbox of the matlab and the sound - launch technology to analyze the time - domain characteristic and the frequency - domain characteristic of the signal, chiefly analyze its short - time average amplitude, its short - time over - zero ratio and its estimate of the power chart and the average - period chart

    實驗中使用了駐極體話筒作為球磨機聲音拾取傳感器，利用matlab中的數據採集（ daq ）工具箱實現對磨音的採集，利用matlab信號分析（ dsp ）工具箱和聲發射技術對磨音進行時域和頻域分析，主要分析磨音的短時平均幅度和能量、短時平均過零率、功率譜估計和平均周期圖。
  18. The first part of the paper is designing the testing project for grounding resistance and insulation resistance in a new way. using 16bits ad converter with programmable control amplifier replaced the way which used changing resistance to change measure range. lt is not only improved testing precision and develop the system expediently, but also reduced the area of the circuit boardwith the new way. in order to make the electric implement safety testing system have upstanding expansibility, the software and hardware of the system adopted the modularization design. adopted mcu atmegal28 as a master mcu which control mmi, realtime clock and communication with slaver mcu. atemga8 as the slaver mcu to realize testing function. so it is easy to add or reduce the testing project. the testing implement system has been developed successfully, and the comments for the system is that it has high precision, high expansibility and easy maintain. but considering the electric implement system should have intelligence and humanity abi lity. so this paper bring forward a scheme of electric equipment safety testing embedded system with speech control. after introduce the basic theory of speech recognition, the paper expatiate the characters of this system. the system is a noise conditon, not special people, small glossary, insulation word system. with these characters design the speech recognition as fellow. utilizing cross zero ratio and short energy to ensure jumping - off point and end point ; adopting mfcc as the character parameters of speech recognition ; the character parameters than be recognized by dtw. in order to ensure the credibility of this project, first realized by matlab in computer

    在介紹了語音識別的基本原理后，闡述了本系統的特點：本系統是一個噪聲環境下非特定人、小詞匯量、孤立詞的語音識別系統。根據本系統的這些特點設計了如下語音識別方案：利用過零率和短時能量相結合的方式確定語音端點；採用mel頻率倒譜系數（ mfcc ）作為語音識別的特徵參數；得到的特徵參數最後通過動態時間規整（ dtw ）的模式識別方法進行識別。為了確保本系統實現方案的可靠性，首先通過計算機利用matlab軟體來模擬，在演算法模擬實現后又進一步增加環境的復雜性：加上較大的環境噪聲、突發性的噪聲等，再通過修改參數、修改參考模板、兩級識別等各種提高語音識別精度的方法來提廣東工業大學工學碩士學位論文高識別率。
  19. Since the developing time of security market is still rather short, the data accumulation is lacked. in addition, the industry has a high level of privacy, except the season report or year report required by law, data are not made public, so the writer could not analyze them by quantitative method, thus making the article lack of vertical and horizontal comparison

    由於我國證券市場發展的時間相當短，原始數據積累的很少，再加之目前基金行業私密性較強，除了法律規定的季報、年報外，數據幾乎不對外公開，也鮮有這方面的研究報告，故無法利用數量統計的分析方法進行采樣分析，使得文章在基金的縱向、橫向比較方面的研究力度不夠。
  20. And that, while the training samples is few and there is random error, ann is much better than ordinary statistical models. generally speaking, while the tourism demand statistical data is for a short period time, and tourism demand is disturbed by many unpredictable factors, ann is a more superior model

    一般而言，旅遊需求統計數據時間較短（也就是說可供「學習」的訓練樣本小） ，而且旅遊需求還受到眾多不可預知因素的干擾，所以在進行旅遊需求預測時用神經網路是一個比較優越的模型分析方法。
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