lognormal 中文意思是什麼

lognormal 解釋
adj. 形容詞 【數學】對數正態的。
n. 名詞 -mality ,-ly adv. 動詞 副詞
  1. The lognormal distribution is widely used in geology to characterize sediment size variations and geochemical element concentrations.

    在地質學中，對數正態分佈已被廣泛用以表示沉積粒度變化特徵和地球化學元素濃集情況。
  2. Likelihood ratio test of the lognormal population

    對數正態總體的似然比檢驗
  3. The probability density distribution of + conforms to the lognormal behavior

    低速帶間距的概率密度分佈可用對數正態分佈來描述。
  4. The computation of the lognormal fussy reliability about vehicle parts with parabola ' s subordinate

    隸屬函數為拋物線時的汽車零部件對數模糊可靠度計算
  5. Statistical analysis of accelerated life test on lognormal distribution case under type i censoring

    對數正態分佈定時截尾樣本下加速壽命試驗的統計分析
  6. The usual way to model indoor radon concentrations is to assume lognormal distributions of concentrations on a given territory

    模式化室內氡氣濃度時常假設，其於一定范圍內為對數常態分佈。
  7. The results show that evt performs better than lognormal pdf for real data sets characterized by high indoor radon concentrations

    結果顯示極端值理論對高氡氣濃度分佈區域之預測佳於一般對數常態分佈模式。 。
  8. The distribution patterns of total phosphate, available phosphate, available iron follow lognormal and others normal distribution. 3

    在分佈類型上，除全磷、速效磷、有效鐵服從對數正態分佈外，其餘全為正態分佈。
  9. It has found that section dimension deviations yield with normal distribution ; axis line deviations yield with lognormal distribution

    通過調查分析認為；混凝土截面尺寸偏差服從正態分佈，軸線位移偏差服從對數正態分佈。
  10. Abstract : in this paper, we obtain the point estimetions and the approximate confidence interval of the environment factor of the lognormal distribution based on the censoring samples. the accuracy of the approximate confidence interval is studied by the simalation method

    文摘:本文導出了壽命分佈為對數正態分佈時基於截尾樣本環境因子的點估計和近似置信限，對所給近似置信區間作了模擬研究。
  11. In this paper, we study the type - i life test of lognormal, normal and weibull distributions with large numbers of samples, get the approximate confidence regions of the parameters, and do many stochastic simulations on the theoretical basis with computer

    本文研究了大樣本定時截尾壽命試驗下對數正態分佈、正態分佈和weibull分佈參數的近似置信域，並在理論基礎上進行隨機模擬。
  12. On the assumption that investment funds follow lognormal distribution, the reinsurance pricing question affected by investment gains is discussed from the reinsurers ' angle

    摘要從再保險人的立場出發，在投資基金服從對數正態分佈的假定下，討論了在投資收益影響下的再保險保費定價問題。
  13. And a scaling lognormal model of flood volume is introduced to represent the affection of temporal scale of duration in annual maximum flood volume distributions

    並提出了洪水洪量的對數正態分佈模型來表徵年最大洪量分佈中歷時的尺度影響。
  14. Aimed at the feature of great fluctuation of water flow - rate in rivers and taking the monthly average flow - rate at low water with 90 % guaranty in recent ten years as design flow - rate, the permissible amount of major pollutants discharged into yellow river by lanzhou namely the stochastic environment capacity of waters, was determined by using a stochastic computation mode on the basis of lognormal distribution theory

    摘要針對河水流量變化大這一特點，採用以對數正態分佈理論為指導的隨機計算模式，以近十年90 %保證率最枯月平均流量為設計流量，確定黃河蘭州段主要污染物的容許排污量，即隨機水環境容量。
  15. In the case of lognormal distribution, we obtain the limit distribution of the sum of the logarithm of every sample ' s test time, and construct the pivot

    對于對數正態分佈場合，本文給出了樣品試驗時間對數和的漸近正態分佈，構造了樞軸量。
  16. As to normal distribution, we find the pivot, which we get from the limit distribution of total test time, is approximate with the one from the case of lognormal distribution

    對于正態分佈場合，本文給出了總試驗時間的漸近正態分佈，利用對數正態場合的結果得到參數的近似置信域。
  17. Through the i 、 q component of ipix radar sea clutter data " s histogram analyses and by skewness and kurtosis computed, it is been shown that sea clutter amplitude is not rayleigh distribution ; through the comparison of amplitude histogram and distributed models with the same parameters, it is been shown that hh polarization clutter is lognormal distribution, whereas vv polarization is k - distribution ; at the same time the correlation function and power spectrum density are been analyzed, at last the correlation compound k - distribution stochastic sequences whose covariance matrix is been given are been generated through sirp algorithm

    文中先介紹了海雜波幅度的有關模型，通過對ipix雷達海雜波數據的i 、 q分量的直方圖以及傾斜度和峰度進行了分析和計算，證明了海雜波幅度不服從瑞利分佈;使用幅度直方圖和相同參數下的各種分佈模型進行比較，得出hh極化符合對數正態分佈，而vv極化服從k -分佈的結論;同時對海雜波的相關函數和功率譜進行了分析，最後使用sirp演算法產生了給定協方差矩陣的相關復合k -分佈隨機序列。
  18. Underlying the assumption that the stock price accords with the model of the stock price fluctuating sources, by comprehensivily applying the stochasitic differential theory and no - arbitriagc thcory, this paper, under the conditions that the risk - free rate r is constant or ito stochasitic process, successively works out the option pricing about the stock price model with that the short - term profit function is piecewise lecture function arid that one with that the short - term profit function is possion jump process, derivats counterpart partial differential equation of option pricing. the outcome states : 1. when the short - term profit function is unusual flunctuating sources bring out a piecewise lecture function, this amendment on the lognormal distribution model does not improve the option price, because this partial differential equation of option pricing is the same one underlying the lognormal distribution model ( see equation 2. 14 )

    本文基於股價符合波動源模型的假設，綜合運用隨機微分理論等數學原理和無套利理論等金融理論，依此對短期收益率函數為分段階梯函數和possion跳躍過程的股價波動源模型分別在無風險利率是常數和隨機過程的條件下作了期權定價，推導出了相應的期權定價偏微分方程，結果表明： 1 、由異常波動源帶來的短期收益率函數是分段階梯函數時，這種對股價對數正態分佈模型的修正不能改善期權價格，因為基於這種模型的期權定價偏微分方程與基於股價對數正態分佈模型的期權定價偏微分方程完全相同（見方程2 . 14 ） 。
  19. So a new method ? scale analysis method ( or called fractal analysis method ) is applied to study the flood of jialing river basin. the scaling hypotheses is applied to the relationship of annual maximum flood and drainage area. and basing on the scaling lognormal model with two parameters introduced by smith, a lognormal model with three parameters of flood is introduced to represent the scale effect of drainage area in annual flood peak distributions

    在洪水區域分析中一般採用洪水指標法，但該法的基本假定與實際情況存在矛盾，因此本文採用一種新的分析方法? ?標度分析法（或稱為分形分析法）來研究洪峰的區域變化，將標度不變性引入年最大洪峰流量? ?匯流面積關系中，並將其用於嘉陵江流域的洪水，另外，本文在smith提出的具有標度性質的二參數對數正態分佈模型基礎上創造性地提出了三參數對數正態分佈模型來表徵年最大洪峰流量分佈中匯流面積的尺度影響。
  20. The models of the stock price fluctuation is a mathematics model discribing the fluctuation of the stock price, it is all along the question financial scholars research over a long period of time, the models existing at present are mainly the model of randonm walk and the model of lognormal distribution etc. economists analyse the two models by authentic proof, which indicates that this two models do not fully qualify the actual stock market. in view of the above - mentioned facts, at the time some scholar have studied a new model of the stock price that even conforms to the actual stock market - that is the model of lognormal distribution

    股票價格波動模型是用於描述股票價格波動的數學模型，一直是金融學者們長期研究的問題。目前存在的模型主要有隨機遊走模型、對數正態模型等，鑒于股價波動的隨機遊走模型和對數正態模型均經過實證分析，表明不完全符合現實的股票市場，目前理論研究者提出一種更符合實際股票市場的股價模型-股價波動源模型（文[ 5 ]的作者將股價異常變化帶來的短期收益率函數附加在幾何brown運動上，推廣了對數正態模型）及研究出了另一種混合形式下（見文[ 15 ] ）的期權定價方程。
分享友人
分享到 Line

分享到臉書