density error 中文意思是什麼
density error
解釋
密度誤差-
The probability density function of net rainfall relative errors, flood peak discharge relative errors and the time error of the forecasted flood peak are calculated by the model developed
通過建立洪水預報誤差分佈的最大摘模型，計算出9座典型水庫洪水預報的凈雨相對誤差、洪峰流量相對誤差和峰現時間預報誤差的概率密度函數，並將其概率密度函數曲線與正態分佈曲線進行比較。 -
The probability of normal r. v. with absolute value less then and equal to one, two, and three unit standard deviations are calculated from error function, the cumulate probability distribution of normal density
常態分佈隨機變數絕對值小於等於一個、兩個、三個標準差之機率分別代入累積機率分佈函數（誤差函數）算出其對應之機率。 -
Through field tricolor ink density measurement and calculation, the actual analysis of aqueous ink tricolor of error
本文通過三原色油墨實地密度的測定及計算，分析實際三原色水性油墨存在的誤差。 -
This paper studies mainly the theories of the semi - parametric regression model : ( 1 ) under proper conditions, using random weighted way to the estimator of the error density f ( x ) of the semi - parametric regression model, this paper proved the strong and weak consistent and the asymptotic unbiased property of the weighted kernel estimation fn1 ( x ) of the f ( x )
本文對半參數回歸模型：主要做了以下三個方面的理論研究： （ 1 ）將隨機加權法應用到半參數回歸模型的誤差密度f （ x ）的估計當中去，在適當的條件下，證明了誤差密度的加權核估計（ ? ） _ （ n1 ） （ x ）的強相合性、弱相合性及漸近無偏性。 -
Low density parity check ( ldpc ) code, which is a special case of error correction code with sparse parity - check matrix, has the performance very close to the shannon limit
Ldpc碼是一種特殊的具有稀疏校驗矩陣的糾錯編碼，其性能逼近香農限。這種碼具有實現復雜度低和數據吞吐量高的優點。 -
Low density parity check codes are a class of linear block error - correcting codes that can be defined by the very sparse parity - check matrix. their error performance approach shannon limits
Ldpc碼（低密度校驗碼）是一類可以用非常稀疏的奇偶校驗矩陣定義的線性分組糾錯碼，具有逼近香農限的性能。 -
This paper introduces two methods of computing density and enthalpy : combination of " sectional average value " and " look - up tables " will improve the temperature resolution to 0. 1, that is / 0. 1 and h / 0. 1 ; " mathematical simulation " method will get density and enthalpy value with error less than 0. 01 %
在本文中，提出了兩種計算密度值和熱焓值的方法：用「區間平均值法」與查表法相結合，來求密度值和熱焓值，可將求的密度值和熱焓值所對應的溫度解析度，提高到0 . 1 ，即0 . 1 、 h 0 . 1 。 -
Abstract : based on analysing factors resulting in the error from scanline survey on joint trace lengths, the actual process of scanline survey was simulated by the computer. the results show that, except the well - known factors resulting in the error from scanline survey on joint trace lengths, the probability density distribution of joint size also influences the precision of scanline survey of joint trace lengths
文摘:在分析導致節理跡長測量誤差諸因素的基礎上，用計算機對線測量的實施過程進行了模擬研究，結果表明，除了眾所周知的導致節理跡長測量誤差的因素外，節理長度概率密度分佈形式對節理跡長測量誤差也有影響 -
Normal behavior and anomaly are distinguished on the basis of observed datum such as network flows and audit records of host. when a training sample set is unlabelled and unbalanced, attack detection is treated as outlier detection or density estimation of samples and one - class svm of hypersphere can be utilized to solve it. when a training sample set is labelled and unbalanced so that the class with small size will reach a much high error rate of classification, a weighted svm algorithm, i
針對訓練樣本是未標定的不均衡數據集的情況，把攻擊檢測問題視為一個孤立點發現或樣本密度估計問題，採用了超球面上的one - classsvm演算法來處理這類問題;針對有標定的不均衡數據集對于數目較少的那類樣本分類錯誤率較高的情況，引入了加權svm演算法-雙v - svm演算法來進行異常檢測;進一步，基於1998darpa入侵檢測評估數據源，把兩分類svm演算法推廣至多分類svm演算法，並做了多分類svm演算法性能比較實驗。 -
Under the background of target tracking in high - density clutter, the calculation formula of the pda algorithm ' s error variance is analyzed and revised firstly, and the modified pda ( mpda ) is derived, which not only improves the tracking performance, but also makes the error variance and the real error of the algorithm match well
針對高密度雜波環境中的目標跟蹤問題，首先分析和修正了pda演算法中誤差方差的計算公式，提出了修正的pda演算法（ mpda ） ，它不僅提高了跟蹤性能，而且使得誤差方差與演算法的實際誤差能夠很好地匹配。 -
A reasonable criterion to control error of element was studied. base upon this criterion, an indicator to drive the mobile node of bce was presented. in order to improve the efficiency, an implementing scheme ( according to the distribution of strain energy density ) was suggested when to consider the fact that the high gradient usually appears only in a very local region, especially in the case of huge amount of computation
3 .在誤差控制方面，提出了bezier移動節點單元法中節點移動的收斂判據，研究了節點移動的導向原理；在mathematica和fortran環境下實現了完整的計算編程；在處理高梯度問題的實際應用中，提出了高應變能密度區的局部化處理的求解方案。 -
However flux leakage is really exist, calculation through formular analytic method has more error, so electromagnetic field analysis is made by using finite element method ( fem ) in ansys7. 1 / multiphysics and ansys / emag programs. typical quantities of interest in a magnetic analysis are available such as magnetic flux density, magnetic field intensity, magnetic forces, power loss and flux leakage in the system of magnetic levitation. then gain the current in the coil which control levitation gap when the stage is stable
由於存在漏磁，用公式的解析法計算有很大的誤差，因此本文採用有限元法（ fem ）來計算磁懸浮系統磁場分佈，從而計算磁力，通過用ansys7 . 1軟體進行有限元電磁場分析計算，得到平臺穩定懸浮時電磁線圈所需電流、懸浮氣隙等控制參數，由於設計的磁懸浮系統為非軸對稱結構，採用2d磁場分析有一定的誤差，而採用3d電磁場分析更接近實際。 -
Low density parity check ( ldpc ) codes are good error - correcting codes, which can approach shannon ' s capacity limit. due to the sparsity of its check matrix, ldpc codes can be decoded only with linear time complexity using iterative decoding algorithm. therefore, ldpc codes have become one of the most attractive fields in the channel coding community
低密度校驗碼是一種逼近香農限的好碼，由於其校驗矩陣的稀疏特性，採用迭代譯碼演算法，它的譯碼僅具有線性時間復雜度，所以目前ldpc碼己成為通道編碼理論界的研究熱點之一。 -
Moreover, we put forward many schemes to erase errors such as static error, dynamic error, or make them little. especially we dicuss how to deal with the phase - shifting cell ( pzt ) and interferogram. in the end we bring forward two methods to estimate the contour of piano : one is traditional parameter, the other is power spectral density ( psd )
提出從兩方面對面形進行評價，一是用傳統光學像質評價指標，二是利用psd從頻譜角度評價面形，從而為高精度檢測和控制大口徑光學元件表面面形（波前）提供了依據。 -
Qr code is a kind of 2d matrix barcode. it has high density, great capacity that will influent coding of 2d - barcode. a rs code is cyclic symbol error - correcting code, which can correct lost or missing data for damaged symbols
Qrcode是一種矩陣二維碼，具有信息密度大、容量高的優點，因此，譯碼時受噪聲的干擾大，採用糾錯能力比較強的非二進制bch碼中的一類? rs碼進行編碼，可以有效地抗除干擾進行糾錯。 -
As a new kind of piezoelectricity macromolecule material, pvdf ( polyvinylidene fluoride ) has not only lower density, but also better piezoelectricity, good mechanical performance and plasticity. when a particular shaped pvdf film is used as an error sensor and is bonded to the surface of the measured structure, there will be little effect on the system
由於pvdf （ polyvinylidenefluoride聚偏氟乙烯）是一種新型的壓電高分子材料，它不僅密度低，而且具有較強的壓電性，機械性、可塑性好等特點。用特定形狀的pvdf薄膜作為誤差傳感器，將它貼在結構體表面上時，對系統產生很小的影響。
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