計數率差 的英文怎麼說
中文拼音 [jìshǔlǜchā]
計數率差
英文
counting-rate difference-
This thesis tries to update the cmdsr system to achieve the characters below : real - time, better robust, higher recognition rate, non - special - man. considering the disadvantages of traditional improved spectrum subtraction speech enhancement, this thesis proposes the theory of fuzzy spectrum subtraction based on the fuzzy theory and improved spectrum subtraction speech enhancement ; as for the difficulties of detecting the endpoint of speech signal, the thesis gives the table of initial and the improved parameters, with which we can confirm the endpoints of mandarin digit speech ; the thesis puts forward two - level digit real - time speech recognition system, the first level is based on discrete hidden markov model which is linear predictive coding cepstrum ( lpcc ) and difference linear predictive coding cepstrum ( dlpcc ), the second level is based on formant parameters ; as for the realization of hardware, the thesis depicts the realization of every part of cmdsr based on the tms320vc5402 in detail ; as for the development of software, the thesis gives the software design flow chart of cmdsr, simulates the basic theory with matlab language and gives the simulation results
針對傳統的「改進譜相減法語音增強」參數設定單一、環境適應能力差的缺點，提出了一種利用模糊理論和「改進的譜相減法」結合的「模糊譜相減法語音增強」 ;針對語音信號端點檢測困難的特點，通過matlab模擬試驗，給出了能夠準確確定數碼語音端點的初始和改進參數表;提出了利用基於線性預測編碼倒譜參數和差分線性預測編碼倒譜參數相結合的離散隱含馬爾可夫模型進行第一級識別、利用共振峰參數進行第二級識別的兩級漢語數碼語音識別系統，在保證系統實時性的同時，實現連接漢語數碼語音識別系統識別率的提高;在硬體實現上，詳細闡述了基於tms320vc5402的連接漢語數碼語音識別系統各部分硬體設計;在軟體開發上，給出了連接漢語數碼語音識別的軟體設計各部分的流程圖，並對各部分進行了matlab模擬，並給出了模擬結果。Therefore, the three fundamentals required to obtain high precise measurements are : 1 ) frequency stability and frequency difference stability of the double - frequency laser source as well as the stable equivalent length of bore ; 2 ) the measuring beam and the reference beam are placed very co - axially ; 3 ) capability of recording the sub - division of the period of phase change and a reversible counter system
因而干涉儀系統達到高精度的基礎是：頻率及頻差穩定的雙頻激光源、穩定的等效腔長；測量光與參考光合光後有很高同軸度的光路結構；能可靠記錄相位差變化周期數的細分及可逆計數系統三部分。The ? 1 word count error exists in nearly all kinds of digital time and frequency measuring instrument and it affects the instrument ' s measuring precision tremendously
在所有的數字式時間及頻率測量設備中，幾乎都存在著1個字的計數誤差。它的存在，極大地影響儀器的測量精度。The modern robust design detailed the robust design based on engineering model, which explained the specific design process, the whole process from founding system model to solving it. it obtained the optimum combination of parameters and the maximum manufacturing errors, using fuzzy comprehensive judgment to dispose the problem of many targets, handling the design results by fuzzy probability to increase the reliability of the design. in the end, there supplied an example, the optimization design of a long distance hydraulic cylinder to interpret the specific design process, achieving its optimum combination and the maximum manufacturing errors, and verifying the practicability of the design results by the method of fuzzy probability analysis
在第二部分的基於試驗設計的穩健設計中，先對傳統的穩健設計，即三次設計（功能設計、參數設計及容差設計）的設計過程及原理進行了分析，指出了傳統穩健設計法中的不足，即沒有充分利用數字計算機的強大優勢；對于多因素多指標的設計，試驗周期長、計算復雜等造成設計周期長、成本高、效率低等缺點提出了改進的措施，即將虛擬現實技術應用於傳統的穩健設計中，通過模糊數學的方法（模糊綜合評判）來處理設計中的多指標問題，使設計達到事半功倍的效果。This thesis makes the analysis of the methods of frequency measurement, which is the main function of the universal counter, and decides to use the gate modification method to measure frequency
本文對計數器的主要功能之一，頻率測量方法進行了分析，提出採用閘門時間修正法進行測頻，降低了量化誤差的影響。At the present time the prediction method of attracting pest with black light and recognizing and counting by man is generally adopted. there are some serious shortages such as bad recognition accuracy and low efficiency. it reduces seriously accuracy and timeliness of prediction and is disadvantage in guiding insect disease prevention
目前普遍採用的黑光燈誘集害蟲、人工識別計數的測報方法，存在識別準確性差、效率低等嚴重缺陷，極大地降低了測報的準確度和時效性，不利於指導農田害蟲的防治工作，因此本文提出了基於機器視覺和小波分析的圖像識別技術，用於農田害蟲的自動檢測預報。According to the high dispersedness and low precision of measurements when using the traditional time difference method in small diameter and low flow rates conditon, this paper brings forward a new method based on high - speed data acquisition technique. the time difference comes out accurately with high resolving ability of time by using the method and the signal processing algorithms. the developed ultrasonic detection system is composed of two ultrasonic detectors, a transmitting and receiving ultrasonic unit, a high - speed data acquisition unit and a computer
本文針對傳統的時差法在小管徑、低流速測量時，具有測時結果分散性大、測量精度受計數頻率的影響大等不足，創造性地把高速數據採集技術應用在超聲波流量、壓力測量上，用信號處理演算法求時差，使時差成為一個統計量，有效地克服了超聲波傳統時差法測量精度差、不能測量小管徑、低流速流體流量的缺點，提高了時差測量的解析度和精度。In the main theorem, we obtained the error bound between the maximum likelihood estimator and the true parameter
使用這個不等式和概率論的方法，我們得到了參數的極大似然估計的誤差界這一主要定理The error quoted is for a single determintieon based on counting statistics alone.
表列誤差是僅以計數率的統計性質為基礎的單次測定誤差。The whole system has friendly interface, convenient operation and comprehensive functions, which can be used widely in scientific research institutes and factories. the system of blower performance auto - testing improves the stability of testing process, avoids the error of reading, the error of calculation and the error of result causing by relative datas can not be recorded at the same time, the precision and efficiency of testing is largely improved
整個系統具有界面友好、操作方便、功能齊全等優點，試驗結果表明研製基於虛擬儀器的風機性能自動測試系統，增加了試驗過程的穩定性，避免了人為的讀數誤差、計算誤差以及相關數據不能同時記錄所引起的試驗結果的偏差，提高了測試精度和試驗效率。It is assumed that model parameters calibrated from measured precipitation - runoff data in a specific period, reflect the situation of land surface and the human activity in that period. firstly, daily data of precipitation, pan evaporation, and discharge in 1960 ' s are used to calibrate the parameters of the xin ' anjiang model. then the parameters calibrated are applied to the computation of daily discharge from 1950 ' s through 1990 ' s, in which daily measured data of precipitation and pan evaporation are taken as the input of the xin ' anjiang model
這種徑流過程代表下墊面和人類活動水準不變情況下氣候波動對徑流的影響，然後利用計算的長系列徑流過程與實測徑流過程對照，其差別反映下墊面的自然變化過程是十分緩慢的，可以忽略，因此這種差別主要代表了人類活動的影響，從前後期率定水文模型所得參數的差別及參數所代表的物理意義來分析下墊面及人類活動的變化，從而將氣候波動和人類活動對地表水資源影響程度定量分解出來。Abstract : for the linear weighted regression model, influence measure of covariance matr ix perturbation and estimate efficiency of regression parameter have been analyz ed on the basis of the regression diagnosis, and the lower bounds of the two eff iciencies have been given
文摘:針對線性加權回歸模型，從統計診斷的角度分析了協方差陣擾動的影響度量和回歸系數的估計效率，並給出了2種效率的下界In this thesis, genetic algorithm ( ga ) is used to solve aeroengine nonlinear model problems at first time, fast ga and ga application meathods are studied, the main work and the conclusion of the thesis are summarized as follows : 1
本文首次將遺傳演算法應用於發動機非線性數學模型，首先針對遺傳演算法計算效率差的不足，進行快速遺傳演算法研究；然後深入分析了遺傳演算法在發動機數學模型應用中的實現技術。論文完成的主要工作與結論如下： 1Analyze ipo, production reports, data, include : machine efficiency, man power, material consumption, wastage percentage, various between plan and fact. make suggestions for improving production and process management
對生產訂單、報告、數據進行分析，包括：機器效率、人工時間、物料消耗、廢品率、計劃與差異等；為改進生產和過程管理提供依據和建議。( 2 ) because of t he variability of rock subjected to outside action, three new conceptions : postive damage basic damage and negative damage, are suggested, which can deal with the condition that rock density became large. ( 3 ) the present damage variables based on ct number mostly include ct average number of the rock without damage, which is difficult to measure, so a new damage variable, which includes the average ct number is proposed, on the other hand, strain equal theory is generalized because the one put foreword by lemaitre is not good enough to use. ( 4 ) a axial damage constitutive equation is proposed and testified. ( 5 ) with the circle times, the damage propagation laws of two different rocks, subjected to circle of freezing and thawing, are studied, and in the analysis process, traditional analysis method including average ct number and is used, some important conclusions are reached : inner damage of soft rock containing a large mount of apertures is largely propagating with the time increasement of circle, however, at the preliminary time, the hard rock containing a small mount of aperture is a little propagating, at late time, the influence become large ; ( 6 ) zone separation and statistics frequency put forward is used to analysized the three different damage propagation in the open circumstance, when they are subjected to the different circle times of freezing and thawing, in which the temperature variability is linear, different freezing rate, and different freezing temperature, and no water is supplied during the test
在研究過程中本文主要做了以下工作： （ 1 ）針對巖石損傷變化較小時，運用ct均值和方差分析不方便的缺陷，本文提出運用對ct數范圍劃分區段的方法，根據各區段統計頻率的變化規律來分析損傷擴展狀況； （ 2 ）針對巖石受到外部作用的多變性，本文提出了基準損傷，正損傷，負損傷的概念，在某種程度上考慮了巖石受到外部作用時的壓密情況； （ 3 ）現有的基於ct數的損傷變量大多需要用到巖石基體的ct均值，這實際上是很難觀測到的，因此本文建議了一個可運用巖石初始狀態ct均值的損傷變量，由於現有的勒邁特教授應變等價原理使用上的不便，本文在其基礎上進行了推廣； （ 4 ）建議了一個可用巖石初始狀態ct數和彈性模量的單軸損傷本構方程，並用算例進行了驗證； （ 5 ）對兩種不同巖石在開放環境下受到凍融循環作用且融化過程中補水時，內部損傷隨凍融循環次數增加的擴展規律進行了探討，主要運用了常規的ct均值和ct方差的分析方法進行分析，試驗發現：對于孔隙率和含水率較高，密度和強度較低的軟弱巖石，凍融循環次數對損傷結構的擴展有明顯的影響，而對于孔隙率和含水率較低，密度和強度較高的硬巖，凍融循環次數對其損傷結構擴展初期由於含水率低的原因，影響不是太大，而後期由於水補給后，含水率較高的原因，凍融影響逐漸增大； （ 6 ）運用了本文提出的區段劃分和統計頻率的方法，深入地分析了開放環境下的線性溫度變化的凍融循環次數，凍結溫度，凍結速度不同巖石作用時，其內部損傷隨凍融循環次數，凍結速度和凍結溫度變化的擴展規律，需要指出的是除了在試驗前飽水外，凍融過程中沒有補水。When volume efficiency is computed by an engine cycle simulation considering gas flow in intake and exhaust manifold as one - dimensional unsteady flow, improperly given parameters in the simulation may cause an error over 5 %
摘要採用進排氣管流動為一維非定常模型的發動機循環模擬方法計算充氣效率時，若模型中給定的參數不合適，可能引起充氣效率的計算誤差超過5 % 。In the three - year analysis, there was no statistically significant difference in cancer incidence between participants taking placebos and those taking just calcium supplements
在後三年內，統計數據表明，安慰劑組與單純攝入鈣組相比，兩者的癌癥發生率沒有顯著差別。At present, almost all steel factories count bundled bar one by one by workers, it is laborious, low effective, and may cause high error. if these factories would import foreign automatic product lines, they will pay much and improve the cost of steel bar dramatically
目前，國內大多數鋼材生產廠家都採用人工方法來計量捆紮線材的根數，效率低下，勞動強度高，計數誤差大，而引進全自動生產線，成本較高，因此，他們迫切需要低廉的自動計數儀。Summarizing the development statement of monitoring technology for bridge, based on principle of pulse laser ranger detection and fiber - optic strain measurement, in view of the problem affected by single - chip inherent feature, integrating the goodness of cpld device and single - chip, using a / d converter to measure the count quantization error, a strain measurement system is worked out. the above system chiefly consists of light source, optic fiber sensor, photo detector and signal processing circuit
本文綜述了國內外橋梁監測技術的發展概況，在深入研究脈沖激光測距和光纖應變測試原理的基礎上，針對單片機固有計數頻率低、計數量化誤差大和延時不固定等不足，結合cpld計數頻率高、延時小而固定和單片機控制功能強的優勢，並採用模數轉換技術設計計數量化誤差測量電路，提出了基於激光脈沖時間測量法的光纖應變測量的方案。Based on the configure of direction finding, the location method, algorithm, accuracy and performance for multistations and single station are studied in this thesis, and the computer simulation results are given out. it is important of resolving the performance of antenna array. a technique to estimate and calibrate the performance is developed in this page
本文以測向系統的組成為基礎，研究了單平臺情況下利用到達方向、到達時間差、多普勒頻率差、相位變化率等參數的測向方法、測向演算法、測向精度和性能，並進行了計算機模擬，為無源測向系統的設計和實施提供了重要的理論基礎和實驗數據。分享友人