mean accuracy 中文意思是什麼

Having combined external ballistics with gunnery and proceeded from the practical needs of the field artillery, the influence to the firing accuracy by artillery metro report and the improved measures have been studied and analyzed in this essay, thus having obtained a series of valuable and pragmatic conclusions which mean a lot in practical application

論文結合外彈道學理論和炮兵射擊學理論，從地面炮兵的實際需要出發，具體研究了地面炮兵氣象通報對射擊精度的影響及改進措施，提出了建立我軍地面炮兵專用層權及通用層權的方法及改進計算機通報的措施，得出了一系列具有一定實用價值與相當指導意義的結論。

Experimental results show that the pls model gains higher prediction accuracy with the mean prediction error 0. 2 octane number. 3

實驗結果表明pls模型在預測精度上優于mlr模型，其平均預測誤差0 . 2個辛烷值單位，完全可以滿足實際應用的需要。

In the process of accuracy synthesis, monte carlo method is used for calculating the moving platform ' s mean error. the results show that this method is simply and easy to program

在精度綜合工作中，本文提出一種基於蒙特卡洛方法的精度綜合方法，利用該方法能較好地選擇鉸鏈的配合精度。

Creep analysis methods of high - rise buildings and large span buildings can only refer to creep coefficient method in bridge engineering or the method of degree of creep in hydraulic construction engineering under the present experiment conditions. in this paper, the incremental expressions of concrete creep and shrinkage strain when the initial computational age is not the same as the loading age are derived and corrected from the concept of concrete creep coefficient and the mean value theorem of integral and the principle of superposition. the differences of efficiency and accuracy of creep analysis between the finite element method with creep coefficient and the initial stress method with degree of creep are presented. this paper suggests that engineers should use the initial stress method with degree of creep to estimate the influences of creep on high - rise buildings and large span buildings on the basis of conceptual design

基於現有的試驗資料，高層及大跨度民用建築的徐變分析只能參照橋梁結構中的徐變系數方法或水工結構中的徐變度方法進行.從徐變系數的定義出發，利用積分中值定理和疊加原理，推導並修正了加載齡期與起算齡期不同時徐變收縮應變增量的表達式，對比了應用徐變系數分析徐變的有限元法和應用徐變度分析徐變的初應變法在效率和精度上的差別，並建議應從概念設計的角度出發，採用徐變度的初應變法來估算徐變對高層及大跨度民用建築的影響

Abstract : creep analysis methods of high - rise buildings and large span buildings can only refer to creep coefficient method in bridge engineering or the method of degree of creep in hydraulic construction engineering under the present experiment conditions. in this paper, the incremental expressions of concrete creep and shrinkage strain when the initial computational age is not the same as the loading age are derived and corrected from the concept of concrete creep coefficient and the mean value theorem of integral and the principle of superposition. the differences of efficiency and accuracy of creep analysis between the finite element method with creep coefficient and the initial stress method with degree of creep are presented. this paper suggests that engineers should use the initial stress method with degree of creep to estimate the influences of creep on high - rise buildings and large span buildings on the basis of conceptual design

文摘:基於現有的試驗資料，高層及大跨度民用建築的徐變分析只能參照橋梁結構中的徐變系數方法或水工結構中的徐變度方法進行.從徐變系數的定義出發，利用積分中值定理和疊加原理，推導並修正了加載齡期與起算齡期不同時徐變收縮應變增量的表達式，對比了應用徐變系數分析徐變的有限元法和應用徐變度分析徐變的初應變法在效率和精度上的差別，並建議應從概念設計的角度出發，採用徐變度的初應變法來估算徐變對高層及大跨度民用建築的影響

Based on mean shift algorithm i propose dynamical mean shift algorithm. in this paper, i use dmsa to track face in video sequences which combines a probability distribution image of flesh color. in the end of this paper, dmsa ' s tracking accuracy, tolerance to noise, distractors and performance are studied

在基於靜態圖像中使用的msa （ meanshiftalgorithm ）演算法的基礎上，本論文提出了dmsa （ dynamicalmeanshiftalgorithm ）跟蹤演算法，並結合膚色概率分佈，將其應用於人臉跟蹤的研究中。

Accuracy of ptfs is evaluated by the root of the mean squared difference ( rmsd ). last, we compared measuring values with estimation values of regression method and bp model. the evaluating results indicate that ptfs developed by regression method or bp model satisfy to use to the education, research and production practice for keerqin sandy land

最後對統計回歸模擬模型和dp神經網路模型進行了對比評價分析，對比分析結果表明，用兩種模型建立土壤傳遞函數（ ptfs ）的預測效果都比較理想，均可應用於科爾沁沙地的教學、科研和生產實踐中。

Some features of the engineering control network demand special applications of gps in road and bridge engineering, for example, particular requirement of accuracy on some aspect that results in distribution of net points and sometimes bigger height difference of points, consideration of staking out in construction in the design of engineering control network, application of independent engineering coordinate system, and use of engineering mean height surface as the projection surface of computation

由於工程式控制制網的一些自身特性，如施工控制網要考慮施工放樣的方便，或某一方面精度的特定要求，網點分佈不夠均勻，點間高差有時較大；採用工程獨立坐標系，並且往往以工程平均高程面為計算投影面等等，使得gps在路橋工程中的應用也有一些特殊性。

The autoaligment instrument and accuracy turntable with digital display are used to detect the step angle after 32 subdivision, and the experiment results are given, the mean - square error of step angle after 32 subdivision is less than 3. 7 %

為了檢測32細分后的步距角，採用了自準直儀加精密數顯轉臺的光學測量方法，並給出了實驗結果， 32細分步距角的均方誤差不大於3 . 7 。

First, the mean field method is studied in wdm systems with different dispersion maps. by employing this method the computational complexity is greatly reduced without significant sacrifice of the accuracy of the results

首先討論了在不同色散管理方案下平均場方法的應用，該方法在不降低模擬精度的情況下大大縮減了所需運算量。

It is found that the fitting accuracy is higher and the mean relative error between fitted and standard value is less than 0. 3 %

該方法的擬合精度較高，擬合值與輻射模式標準值的平均相對誤差在0 . 3 %以下。

In this paper, we study the performance of input - buffered atm switching with window - access scheme and output - grouping architecture. the close - form formulae of maximum switch throughput, mean cell delay and cell loss probability are obtained by probability generating function approach. the accuracy of theoretical analysis is verified by computer simulations and results show that the maximum switching throughput will reach 99 % under random uniform traffic when the window size and the group size are 4 and 16 respectively

本文提出了具有組合的窗口接入和線群輸出結構的輸入緩沖atm交換網路並對其性能進行了研究.通過概率生成函數方法得到了計算該交換網路最大吞吐率，平均信元時延和信元丟失率的封閉表達式，並通過計算機模擬實驗驗證了理論分析的精確性.研究結果表明，在隨機均勻業務下，當窗口尺寸和輸出群尺寸分別為4和16時，最大吞吐率可達到99

In the course of design, we fully consider the actual conditions on the railway and take a series of corresponding measures to the concrete problem. such as we select high - accuracy microconvertor and have the converted function in succession data collecting system chip aduc812, design v / f circuit and external a / d circuit. in anti - interference of the hardware, we try to disperse each function module to avoid interfering each other, adopt photoelectric isolated technology to dispel the circuit connection of input and output. in controlling we import arithmetic mean into strain wave algorithm and real computing technology of virtual value for sample treatment of data, that is using the software to smooth away interfere error and to calculate actual value, thus it makes the precision of the data improve greatly

在設計過程中，根據系統要求，充分考慮鐵路上的實際情況，針對具體問題採取了一系列的相應措施，如在器件選擇方面選用高精度microconvertor系列、具有adcdma連續轉換功能的數據採集微控制器晶元aduc812 ，設計了v f變換電路和外部a d轉換電路；在硬體抗干擾方面，將每個功能模塊盡量分散獨立開來以避免相互干擾、採用光電隔離技術消除輸入輸出通道上的電路聯系；在控制方面對于采樣數據的處理引入了算術平均值濾波演算法和真有效值的計算方法，即通過使用軟體來濾除系統中有干擾造成的誤差並計算真值，從而使數據的準確性得到極大地提高。

Abstract : assembly with repair match means can attain high accuracy. mainproblem in repair match mean is the repair allowance of the repair righ. this is described in this paper

文摘:用修配法裝配可獲得較高的裝配精度，修配環修配量的確定是該裝配法的主要問題，本文僅對此進行闡述。

Then, this paper empirically tested the validation and predictive accuracy of different var risk management model in the domestic financial market. finally, with the analysis of modem financial risk management development trend and the current domestic financial risk management situation, this paper made a prospect for the application of this model in the construction of domestic financial risk management system. through the analysis, the main conclusions are as follows : ( l ) the traditional mean - variance model is the special example of the portfolio selection based on the var risk management model for the case that the returns of the portfolio are assumed to be normally distributed ; compared with the mean - variance model, the var risk management model is more comprehensive and accurate in the measurement of the portfolio risk, so based on the var model, the investors can allocate the asset more effectively. ( 2 ) the var risk management model can provide the timely and comprehensive risk information for the top risk manager, so it is very helpful to the improvement of total risk management efficiency. ( 3 ) based on the var model, the raroc performance valuation approach can reflect the real performance of the portfolio manager and provide the coherent standard for the allocation of risk limitation and the construction of the incentive compatibility constraint mechanism in the financial instiutions

通過研究分析，本文主要得出如下結論： （ 1 ）傳統的markowitz均值? ?方差模型僅僅是在資產組合收益率正態分佈假設條件下基於var風險管理模型進行資產組合選擇的特例，與均值? ?方差模型中的方差風險度量方法相比， var風險管理模型能夠更全面、更貼切地衡量資產組合的風險，且基於此模型能夠更有效地進行資產配置決策； （ 2 ） var風險管理模型能夠滿足更高層次風險管理者對風險信息的需求，有助於整體風險管理效率的提高； （ 3 ）基於var風險管理模型的raroc績效評價能夠反映資產組合管理人的真實業績，從而為金融機構風險限額的分配和激勵約束機制的制定提供統一的標準； （ 4 ）國內證券市場資產組合收益率服從正態分佈的假設明顯不成立，實證檢驗表明基於資產組合收益率正態分佈假設條件下的方差? ?協方差模型對國內資產組合風險的預測存在較大的偏差，由於文中證明在收益率正態分佈假設條件下基於方差? ?協方差模型進行資產組合選擇的結果等價于markowitz的均值? ?方差模型，因此，均值? ?方差模型對國內資產組合風險的預測同樣會存在著較大的偏差，而半參數var風險管理模型則能夠取得較好的預測衡量效果； （ 5 ） var風險管理模型符合未來金融風險管理的發展趨勢，基於var風險管理模型建立內容提要風險限額內控體系、風險信息披露體系和業績評價體系，並進行金融監管，將有助於國內金融機構內部風險管理方法和外部監管技術跟上國際金融風險管理的發展潮流。

Assuming that the earthquake ground motion is a zero mean valued non - stationary random excitation, the higher accuracy numerical algorithm of these complex oscillators were developed in virtue of the principle of pseudo - excitation method

通過假定地震地面運動為一零均值的非平穩隨機激勵，應用虛擬激勵法原理，推導得到了廣義復振子動力坐標計算的一般公式，進而得到了非比例阻尼線性體系非平穩隨機地震響應計算的一般解答。

Firstly, unlike the factorization - based methods that minimize the svd ( singular value decomposition ) re - projection error, the method uses the minimization of mean 2d re - projection error of projective points as a criterion, therefore it has a clearer physical meaning and enhances the accuracy of projective reconstruction results

該方法以全局性極小化射影三維空間點的二維反投影誤差平方和為準則，相對于縮小svd反投影誤差的方法，具有更為明確合理的物理意義。

The mean of the intraclass standard deviations of the features is used as a weighting factor during the classification process to improve recognition accuracy. the system is rigorously tested under different conditions, including using different number

該系統使用不同行數的訓紈集和不同字號的文檔進行了測試，結果表明， tsirikolias mertzios矩利加權規格化生相關提供了最好的識別率。

Glucose alues calculated from sensor signals compared to capillary blood glucose concentrations from intermittent fingerstick testing ( a mean of 4 per day ) and were analyzed for accuracy

由傳感信號計算出的血糖值與間斷的（每天平均4次）指尖毛細血管采血血糖數值進行比較，從而進行準確性的分析。

In the seventh chapter, some of the above proposed new circuit, such as high frequency, high definition 12 - bit, 80mhz samples / s current - steering dac and fully differential r - mosfet - c bessel filter with accurate group delay, high accuracy bandgap reference and high drive capability cmos operational amplifier have been applied in communication gsm baseband i / o port integrated circuit, all the above blocks meet well with the design requirements of the system, and gain the better testing results, in the mean time, the above proposed high accuracy bandgap reference circuit als

第七章:將本文第二章提出的高速、高精度12位、 80mhz采樣率電流舵結構的數模轉換器和第五章提出的r一mosfet一c結構且具有精確群時延值的貝塞爾（ bessel ）濾波器以及第六章提出的高精度帶隙基準電壓源和高驅動能力全差分運算放大器電路應用於通信gsm基帶輸入/輸出埠晶元，滿足系統設計要求並取得了令人滿意的實測結果。