方差系數 的英文怎麼說

中文拼音 [fāngchāxìshǔ]
方差系數 英文
coefficient of variation
  • 方 : Ⅰ名詞1 （方形; 方體） square 2 [數學] （乘方） involution; power 3 （方向） direction 4 （方面） ...
  • 差 : 差Ⅰ名詞1 （不相同; 不相合） difference; dissimilarity 2 （差錯） mistake 3 [數學] （差數） differ...
  • 系 : 系動詞（打結; 扣） tie; fasten; do up; button up
  • 數 : 數副詞（屢次） frequently; repeatedly
  • 方差 : dispersion
  • 系數 : [數學] coefficient; ratio; modulus; quotient; factor
  1. Agglomerative effectiveness : the effect on regional economical inequality because of industrial agglomeration. in order to show the effects of industry on regional inequality, the model of panel data is applied to analyze the relationship between industrialization and economy growth., which is helpful to estimate whether the tendency of growth is convergence and the structural effectiveness. the time series model is used to analyze the effect of industrial agglomeration on regional inequality, where gini coefficient is taken as the index of industrial agglomeration

    為了更清楚地把握工業在地區差距上的效應，本文用面板數據模型分析工業化程度和經濟增長之間的相關關系，從而判斷區域經濟發展趨勢是否收斂，工業在「結構效應」方面的影響;計算表示工業集聚程度的基尼系數，通過時間序列模型分析工業集聚對地區經濟差距的「集聚效應」影響。
  2. Cathode and anticathode electric current distributing online detect equipment can trace aluminum electrolysis pot and document the electric current data change. by avail of this data, the relation of anticathode and cathode will be discovered. furthermore, some unknown rule may de discovered by online analysis and data mining. in this paper, author has completed a full study toward the production of aluminum electrolysis

    陰、陽極電流分佈在線檢測裝置跟蹤記錄了大量的鋁電解槽在平穩運行和發生針振時的陰、陽極電流分佈變化情況及方差變化情況的原始數據；從理論上講，在這兩者之間存在一定的對應關系，通過對陰、陽極電流分佈的實時、在線檢測，可以對電解槽的穩定性進行判斷，從而找到一種全新和更有效的管理模式。
  3. We proof the covariance function of covariance stationary processes is equivalent with mercer kernel function. that is, the covariance function of covariance stationary processes is a mercer kernel function ; in reverse, for a given mercer kernel function, there exists a covariance stationary processes, and the covariance function corresponded to this covariance stationary processes is the given symmetry positive - definite kernel function. it means that the covariance function is equivalent to symmetry positive - definite kernel function

    首先建立了協方差平穩過程的協方差函數與積分方程中對稱正定mercer核函數的等價關系，即協方差平穩過程的協方差函數是對稱正定mercer核函數，反過來，對給定的對稱正定核函數，證明了存在協方差平穩過程，使得此協方差平穩過程對應的協方差函數恰好為給定的對稱正定核函數，這說明協方差函數和對稱正定核函數是等價的。
  4. Using the system designed in this thesis work, flow field calibration of the wind tunnel is accomplished, which covers dynamic pressure drop coefficient, dynamic pressure time stability, axial static pressure gradient, boundary layer, and degree of turbulence, etc. boundary layer measuring principle and method are especially described in detail, the relationship between boundary layer thickness, wind speed setting, and the depth of the experimental section is summarized, and finally the calibration data for th e model center zone under specific wind speed are given

    然後利用本文設計的系統完成了落差系數、動壓時間穩定姓、軸向靜壓梯度、邊界層及湍流度等內容的流場校測。特別對邊界層測量的原理及方法做了較詳盡的敘述，總結出邊界層厚度與設定風速、實驗段深度的關系，然後給出模型中心區一定風速下校正數值。
  5. As far as the system observation for accuracy evaluation of carrier rocket is concerned, there may exist different types of observed data and priors. heterogeneous information means that the different information describing the different characteristics of the same object. since all of the information is relevant to the same object, the fusion is possible. it is a key problem that how to fuse the heterogeneous information to obtain the better evaluation result. therefore, the different heterogeneous information and data is thoroughly studied, moreover, the mathematical description for information fusion of different parameter priors and data is constructed in this paper. based on their relationship between different parameters, indirect prior and observation data is transformed into prior in impact point observation space, which is fused with original prior by weight determined by maximum entropy rule to obtain the mixed posterior distribution. therefore, the test results can be given by combining posterior distribution and impact error observed data. then its application on evaluating guidance systematic error is elaborated as it applies trajectory tracking data, test value of coefficients of guidance instrumentation systematic error, impact point observation data and prior. especially, the advantage of this method lies in its application in case that guidance instrumentation systematic error may not be computed precisely. finally a detailed example on evaluation of carrier rocket is given to verify the theory

    為充分利用運載火箭觀測中的不同觀測空間和過程的信息來進行精度評估，針對該背景建立了異質先驗融合的數學描述.研究了飛行試驗中不同觀測空間和過程的異質先驗信息和數據，基於不同觀測過程的解析關系，將間接過程的先驗和觀測數據算出的后驗分佈轉換成落點觀測空間上的先驗，與原落點的先驗進行了最大熵加權融合，得到混合后驗分佈，從而結合落點觀測數據給出評定結果.在無法解算出精確的制導工具誤差系數的情況下，這種方法充分利用了彈道跟蹤數據、工具誤差系數的地面測試先驗值、落點先驗及落點數據，穩健性更好，準確性更高
  6. Discusses the characteristic values on individual stock risk with the standard deviation, variance ( 2 ), standard deviation coefficient ( cv ) and coefficient measurement, construct the individual on stock ' s statistics index system on investment risk. 2. discuss the characteristic of standard deviation, variance, variance - covariance matrix to measure the investment risk of stock portfolio

    第二章「證券投資風險的度量」分為三個小節： 1 、討論單個證券風險用標準差（ ） 、方差（ ~ 2 ） 、變差系數（ cv ）以及系數度量，構造了單個證券的投資風險統計指標體系； 2 、討論了用標準差和方差、方差?協方差矩陣、方差?協方差矩陣的特徵值來度量組合證券的投資風險； 3 、計算了衡量證券組合系統性風險的系數值，並分析了系數的含義和預測能力的可靠性。
  7. Many risk measuring techniques appears, such as variance method, p analysis method, duration method. these techniques only can be applied into given financial tools or specific field

    在西方，許多風險衡量技術，如標準差、系數、持續期和delta等方法都應運而生，但這些技術都只能適應特定的金融工具或在特定的范圍內使用，難以綜合反映風險承擔情況。
  8. The fundamental theory and equations for the pressure fluctuation are described and the wall pressure fluctuation is measured. based on the experiment data, the characteristics of pressure fluctuations are analyzed in the three - phase flow of water, air and sand. the effects of air concentration and sediment content on the amplitude and frequency of pressure fluctuations are discussed

    建立了多相流壓強脈動基本方程，闡述了水流脈動壓強基本理論，分析了壓強脈動機理；根據試驗數據，探討了水、氣、沙三相流體的壓強脈動特性，初步得到了高速含沙摻氣水流脈動壓強的幅值特性與頻域特性；提出了脈動壓強強度系數、脈動壓強極差系數與含沙量、摻氣濃度的關系。
  9. Both absolute difference and relative difference among per capita gdps of 14 cities ( prefectures ) increased year by year since 1990 - the absolute difference increased linearly - - and this increased tendency would n ' t change in short period. by counting the discrete and ratio between per capita gdp of every city ( prefectures ) and that of the total province, the relative development speed of every region and the industrial structure of every region, i think that the characteristic of the spatial structure of regional economic difference in hunan is that the area along the beijing - guangzhou railway line in the east of hunan developed fast, while the vast area in the west of hunan developed slowly, so the regional difference increased constantly. on the difference background between the east and the west of hunan, there is the difference between central region and fringe region, for one thing it shows ring difference, namely chang - zhu - tan internal ring, surrounding chang - zhu - tan medium ring, the outermost external ring, the most underdeveloped counties lie on the fringe and mountain regions in the west, south and east of hunan, for another it displays that the peripheral regions of 13 prefectural cities are more developed than the other

    文章還建立了反映基礎設施水平、經濟發展水平、社會發展水平的23個主要指標構成的湖南省區域差異衡量指標體系，在此基礎上，藉助spss統計分析軟體，運用主成分分析法，對湖南省14個市州經濟發展綜合水平的差異狀況進行了研究，結果表明：長沙市的經濟發展綜合水平在14個市州中遙遙領先，反映了湖南省經濟發展空間結構的「單極主導」特徵；通過計算人均gdp的標準差和標準差系數，研究區域經濟差異的總體水平及區域經濟不平衡發展的演變趨勢，發現90年代以來湖南省各市州人均gdp的絕對差異和相對差異都在逐年擴大，其中絕對差異隨年份直線上升，且這種差異擴大的趨勢在短期內難以改變；通過計算各市州人均gdp與全省人均gdp的離差和比率、各市州發展速度的差異及產業結構的差異，認為湖南省區域經濟差異的空間特徵是：湘東京廣沿線地區基礎較好，發展較快，湘西地區發展緩慢，地區差異不斷擴大；通過以縣為對象的差異研究發現在湘東湘西差異的大背景上還有核心區與邊緣區的差異，它一方面表現為長株潭內層、圍繞長株潭的中層、更遠的外層的圈層差異特徵，最落後的縣分佈於湘西、湘南、湘
  10. In this paper, a context - based 2d variable length coding c2dvlc method for coding the transformed residuals in avs video coding standard is presented

    本文給出了一種高效的用於視頻編碼中預測殘差系數編碼的變長熵編碼方法。
  11. So, the method, that is, determining adjusting coefficient of moment capacity of column - to - beam according to actual reinforcement of beam, which have been adopted by framework of gradel intensity - category 8 and of grade 1 intensity - category 9 can effectively form advantageous energy - dissipation mechanism under intermediate earthquake and rare earthquake

    因此， 9度一級和8度一級框架按梁端實配鋼筋確定樑柱抗彎承載力級差系數的方法能較為有效的引導框架在中震及大震下形成有利的耗能機構。
  12. Finally, in the feature matching stage, with the variance reciprocal used as the weighting coefficients, the features from each parts of the iris image ( the first iris image division ) are matched separately and then 3 matching results are got

    最後，在匹配識別演算法中，本文對歸一化處理中第一次圖像分割后的3部分區域分別採用方差倒數加權求和的匹配演算法進行識別判決，得到3個識別結果。再用不同的可信度系數來加權這3個識別結果，得到最終的識別結果。
  13. Using square error function and the barycenter algorithm of light intensity as the merit function of focusing and alignment respectively, the system analyzed the images captured by charge coupled device ( ccd ) in the projection screen to produce feedback signals

    該系統運用數字圖像處理技術，以方差函數和光強重心演算法分別作為清晰度調節和三色和色調節的評價函數，分析電荷藕合器件（ ccd ）採集的局部圖像，產生反饋信號。
  14. This paper first research on main technologies used by avs standard, which include prediction, transform, quantization, in - loop filter, and entropy encoding, and then focus on the 2d - vlc entropy coder of avs, which is context - based adaptive coder. this encoder operates on run - level pair, and it uses the type of current block and value of current coefficients to switch vlc code - table. these tables are designed according to the distribution of transformed coefficients, and this way is much better than using only one table to code all residual coefficients in one 8x8 block

    本文首先詳細研究了avs標準的核心技術，包括預測編碼、變換量化、環路濾波器以及掃描和熵編碼等，之後重點研究了avs標準中使用的基於上下文的2d - vlc變長編碼方法，這種方法編碼的是（ run ， level ）數對，同時根據當前編碼塊的類型和殘差系數這兩種上下文信息來切換碼表，這些碼表是預先根據變換系數在不同位置的分佈信息設計好的，這樣要比只使用一個變長碼表來編碼塊內所有位置上的殘差系數的壓縮效果要好得多。
  15. In this paper, an integral scheme of 16 position error calibration and autonomous alignment for three axis platform is given. it may calibrate 33 errors in all. first, determine parameters with least square estimate, then bayes method, ridge regression estimation were discussed separately

    本文設計了一個十六位置誤差標定方案，可以分離出總計33項誤差，首先用最小二乘估計方法進行參數辨識，而後，分別研究了基於bayes方法的誤差系數辨識，基於嶺估計的誤差系數辨識。
  16. However, two - stage estimates of regression coefficients corresponding to these two estimates have approximate equal mean square error. for testing linear hypothesis about regression coefficients, banerjee and magnus ( 1997 ) studied the sensitivity of f - test sta, tistic ( fgls ( ) ) based on generalized least square estimate caused by variance parameter in general case and proposed sensitivity statistic and its distribution

    關于回歸系數的線性假設檢驗問題， banerjee和magnus （ 1997 ）在一般情況下從理論上研究了方差參數對基於廣義最小二乘估計的f -檢驗統計量（ f _ （ gls ） （ ） ）的種種影響，提出了敏感性的概念，並給出敏感統計量的形式及其分佈。
  17. Three characteristic features, such as average velocity of sound, deviation coefficient of sound velocity, and deviation coefficient of amplitude are extracted from four kinds of testing data which are sound velocity, amplitude, frequency and waveform in this paper. fuzzy analysis and artificial neural network are combined to form an intelligent system with similar functions to human brain to classify grc, aerated concrete, hollow brick, solid brick and concrete block. the accuracy of this system is up to 95 % in field tests

    由超聲脈沖法獲得4種檢測信息聲速、波幅、頻率和波形，從中提取3個特徵量：平均聲速、聲速的離差系數和波幅的離差系數，利用模糊分析方法和人工神經網路相結合對grc 、加氣混凝土、空心磚、實心磚、砌塊5種墻體材料進行種類識別，形成一個智能化的、具有類似人腦功能的系統.經現場實測證明，判別的準確率達95 %以上。
  18. At first, the soft of bridge structure, gqjs, is used to calculate the structure of prestressed concrete continuous beam bridge and the deformation and stress of the concrete box beam are given out ; then by measuring and analyzing the datum of the stress in the prestressed steel rope and the stress of section in the concrete box beam, this article presents two ways to identify the reasonable friction deviation factor k between longitudinal prestressed tendons and the wall of duct ( indirectly and directly ), and discover the regular pattern of prestressed friction loss

    首先運用橋梁結構分析專用軟體gqjs對預應力混凝土連續梁橋進行結構計算，得到了各施工工況下混凝土箱梁的撓度和截面應力；然後給出了識別引起結構預應力損失的孔道偏差系數k的兩種方法（間接法和直接法） 。通過對測得的預應力索沿程應力和混凝土箱梁截面應力數據的分析處理，得到了合理的預應力孔道摩擦偏差系數及預應力摩阻損失規律。
  19. Abstract : in this paper, best estimation of combinatorial prediction is constructed by weights reciprocal variances. then their precisions are compared. random error 、 residuals and predicitons by identical precisions are explained

    文摘:文中討論了在方差倒數權為基礎的正權組合預測條件下，最佳估計值的確定及其精度比較；並深入闡明隨機誤差、殘余誤差及等精度測量的意義和它們之間的關系。
  20. Study on calibration of sims error coefficients with bayesian dynamic model

    基於貝葉斯動態模型的慣組誤差系數標定方法研究
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