sample interval 中文意思是什麼

sample interval 解釋
抽樣間隔取樣間隔
  • sample : n 1 樣品，貨樣。2 標本；榜樣，實例。3 【統計】典型取樣，抽檢查。4 【電訊】信號瞬時值。5 【冶金】 ...
  • interval : n 1 （空間方面的）間隔；空隙。2 （時間方面的）間隔，間歇；工間休息，幕間休息。3 【軍事】（各小隊...
  1. For this purpos, from the point of the log geology, aimed at the actuality of the current fractured reservoir log geology interpretation and evaluation, based on synthetical analysis of the current domestic and foreign fruit of fractal dimension investigation of reservoir fracture, using the method and technique of fractal dimension, through the further discussion of the fractal dimension characteristics of m index and n index in the log interpretation archie model in a sample way and through the theoretic reasoning to the fractal dimension dfa and m index of fractured reservoir interval ' s log curve, according to the geophysical signification of the fractal dimension dfa of fractured reservoir interval ' s log curve shape : the more complicated the change of the curve shape is, the larger the its dfa value is, then the more complicated space structure of fracture and pore, then the higher value of m index of space structure of fracture and pore, and so on, the text propounds an improved method, based on box dimension, of covering log curve with scale grid, and by programming computes the dfa and its m index value of fractured reservoir interval ' s log curve, for instance, ac and rt curve, ect, then further puts this technique into application investigation, and makes analysis of application effects in the reservoirs located in l area of qx oil field from three aspects : 1. the dfa and its m index value of fractured reservoir interval ' s log curve, for instance, ac and rt curve, ect, which are derived from computing, is used to identify reservoir type by crossplotting m index with the product df _ acrt of fractal dimension of acoustical wave log curve and restivity log curve and by experiential discriminance plate of reservoir type in l area of qx oil field

    因此，對該區裂縫性儲集層的類型識別、孔滲特徵的測井地質解釋以及儲層裂縫的發育和分佈規律進行深入的研究便成為本文研究的出發點。為此，本文從測井地質的角度，針對當前裂縫性儲層測井地質解釋與評價的現狀，在綜合分析當前國內外儲層裂縫的分形分維研究成果的基礎上，利用分形分維方法和技術，通過對archie測井解釋模型中的m指數、 n指數的分形分維特性的深入淺出的論述以及裂縫性儲層段測井曲線分維d _ （ fa ）與m指數的理論推導，根據裂縫性儲層測井曲線形態分維值的地球物理意義? ?曲線變化越復雜，則其分維值d _ （ fa ）越大、裂縫孔隙空間結構越復雜、裂縫孔隙空間結構指數m值越高等特徵，提出了改進的基於盒維數的測井曲線網格覆蓋法，編程計算了裂縫性儲層段常規測井曲線（如聲波和電阻率曲線）上分形分維值及其m指數值，進而從以下三個方面對qx油田l區塊的裂縫油藏進行應用研究，效果十分理想： 1將計算得到的可變的m指數與聲波和電阻率分維之積df _ acrt進行交繪，採用儲層分維值分類技術統計分析這些參數變化的規律，並結合qx油田l區塊儲層類型經驗判別圖版，從而實現qx油田l區塊下白堊統的裂縫性儲層的類型識別。
  2. Firstly, by numerical and theoretical analysis, the author compares some existent confidence intervals, for example, " exact " confidence interval, wald confidence interval and bayesian confidence interval, and finds some deficiencies points of the confidence intervals, whose modification version has been proposed. also, several better confidence intervals such as are also presented. secondly, for given confidence coefficient and interval width, the author constructs a class of asymptotical two - stage interval estimate procedures. at the same time, under varies restriction of confidence coefflcientent interval width, the optional sample size of the first stage has been computed by numerical computation. the numerical computation shows that the method considered in this dissertation have good properties and applied value

    同時，由於poisson分佈的特性，我們知道不存在其參數區間長度小於0 . 5的置信區間，基於這些情況，我們主要展開了以下兩個方面的研究：一是利用數值計算分析與理論分析的方法對現有的若干置信區間如「精確」置信區間， wald置信區間， bayes置信區間等進行分析比較，發現了一些缺陷，針對這些缺陷，我們進行適當的修正，並得到幾種性質較好的置信區間如：修正大樣本區間jeffreys原則下置信區間二是針對已給定的置信系數與區間長度，我們提出了一種漸近的兩階段區間估計程序，並利用數值計算的方法，在各種置信系數與區間長度限定下，算出了最優的第一階段觀測次數（抽樣量） ，大量數據表明，本文考慮的方法性態良好，具有應用價值。
  3. Interval estimator of shape parameter of three - parameter weibull distribution based on type - censored sample

    分佈定數截尾下形狀參數的區間估計
  4. A kind of probability sample in which a set interval is applied to a list often population to identity elements included in the sample ( e. g., picking every 10th name )

    一種概率抽樣.以一定的間隔來從人口名單中抽取所需的樣本（如:每隔10個人抽取一次）
  5. We collected samples of the dust derived from the dust storm with an interval of 4 hours and obtained 13 groups of sample which had been dried and weighted in lab

    通過對分時段監測取得的13組降塵樣品進行降塵量和粒度測定，結合風速變化情況，可將本次塵暴分為塵暴前期和塵暴後期兩個過程。
  6. This paper abstracts financial transaction characteristics, describes ultra - high - frequency data with marked point process, defines transaction process intensity to present both transaction time interval changes and marks changes, derives sample function density and its maximum likelihood estimating formulation

    本文通過抽象交?過程的特點，把成交時點變化用隨機點過程描述，把價格成交?等看作為成交時點上的標值，用標值隨機點過程描述交?過程。
  7. The process that light wave gets through arrayed waveguides can be regarded as a process of extracting spatial sample and filtering spatial frequency. spacial sample is accomplished by period interval arrangement of awg and spatial frequency filtering is accomplished by the fundamental mode and phase delay of each arrayed waveguide which is just a spatial frequency filter

    而光場通過陣列波導的過程，可八碩士學住論文waiaster 』 stiesis以看作是空間抽樣以及空間濾波的過程：空間抽樣由陣列波導的周期間隔排列完成，空間濾波由每個陣列波導的基模形式以及位相延遲完成（陣列波導即為一空間濾波器） 。
  8. ( 3 ) adaptive sample algorithm such as predicted covariance threshold method, pre - establish sample interval method, and recursive method have been researched. we especially analyze the advantage and disadvantage of predicted covariance threshold method and pre - establish sample interval method, and present an improved pre - establish sample interval method

    分析了當前常用的預測協方差門限法，預先定義采樣間隔法以及遞推法，特別分析了預測協方差門限法和預先定義采樣間隔法的優缺點后，綜合兩者的優點提出了改進的預先定義采樣間隔法。
  9. Influence of slit width and sample interval on transmitted spectrum of porous aluminium coating inlaid with copper

    狹縫寬度與取樣間隔對鑲嵌銅多孔鋁膜透射光譜的影響
  10. The quantization interval, or the difference in value between two adjacent quantization levels, is a function of the number of bits per sample and determines the dynamic range

    量化階距，即兩個相鄰的量化電平之間的差值，是每個抽樣的比特數的函數，它決定了動態范圍。
  11. In this paper, i study above two issues and gain some results as follows : 1. under population follow normal distribution hypothesis, designing combine median - range adaptive control charts with variable sampling interval, variable sample size and variable control limit. it may be regarded as previously median - range extension

    在假設總體服從正態分佈的條件下，設計了抽樣區間，樣本容量和控制限都變化的全變化參數的中位值-極差聯合控制圖。它是以前的中位值-極差聯合動態控制圖的推廣。
  12. About and of two normal distribution and of gamma distribution. when sample size is not large, conclusion shows that the precision of the interval estimation of parameter is remarkably increasing if the data from tables in this paper are used

    通過計算比較，得出結論：在小樣本的情況下，用本文所求的置信區間作為未知參數的區間估計將會使估計精度得到顯著的提高。
  13. Thus a new small sample based system reliability confidence interval estimation method is offered under the assumption that the system follows normal or log normal distribution

    由此提出了小子樣下的系統可靠性置信區間估計新方法，該方法只假設系統可靠性估計服從正態或對數正態分佈。
  14. The intel programmable interval timer 8254 is used in this system to generate and sample pwm waves

    並利用可編程計數晶元8254實現了pwm波形的產生與采樣。
  15. In this work, oscilloscopes with high precision are used to record the time interval when shock wave passed through the porous sample. we have measured the hugoniot data of porous iron whose initial densities varies from 6. 151 to 6. 725 mg / m3

    本文採用高精度的示波器作為時間間隔記錄儀器，測量了初始密度為6 . 151 - 6 . 725g / cm ~ 3多孔鐵的沖擊壓縮數據。
  16. This counter displays the difference between the values observed in the last two samples divided by the duration of the sample interval

    此計數器顯示在最後兩個樣本（以取樣間隔持續時間來劃分）中觀察到的值之間的差異。
  17. Besides, among the three m & a patterns, the vertical is most significant, that of the mixed m & a presents positive but not significant, and the parallel m & a pattern has a negative relationship with the effect of m & a, and the longer the interval of the sample gets, the more significant the relationship becomes. as a result, we need longer - period samples to verify its effect

    但我國並購行為並未能給企業的中長期經營情況帶來改善;在三種並購方式中，縱向並購的績效明顯優于另外兩種;混合併購的績效呈現拋物線式的變化;而橫向並購的績效隨時間而增長的趨勢顯著，需要時間進一步檢驗。
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