抽樣穩定性 的英文怎麼說

中文拼音 [chōuyàngwěndìngxìng]
抽樣穩定性 英文
sampling stability
  • 抽 : 動詞1 （把夾在中間的東西拉出; 提取） take out （from in between） 2 （從全部里取出一部分; 騰出） ...
  • 樣 : Ⅰ名詞1. （形狀） appearance; shape 2. （樣品） sample; model; pattern Ⅱ量詞（表示事物的種類） kind; type
  • 穩 : 形容詞1 （穩定; 穩當） steady; stable; firm 2 （穩重） steady; staid; sedate 3 （穩妥） sure; rel...
  • 定 : Ⅰ形容詞1 （平靜; 穩定） calm; stable 2 （已經確定的; 不改變的） fixed; settled; established Ⅱ動詞...
  • 性 : Ⅰ名詞1 （性格） nature; character; disposition 2 （性能; 性質） property; quality 3 （性別） sex ...
  • 抽樣 : [統計] sample; sampling; specimen; samples draw
  • 穩定性 : antiwhip
  • 穩定 : 1 （使穩定） stabilize; steady 2 （穩固安定） stable; steady 3 （物質的性能不易改變的作用） stabi...
  1. First, this paper gives an introduction of some methods of unequal probability sampling, their estimators and variance estimators, including sampling with pps with replacement, methods of sampling without replacement suggested by brewer, durbin, sampford, des raj, murthy, rao - hartley - cochran. then, at the basis of rao and bayless ' s study, we consider that population can be splited two random subpopulations, which are respectively drawn from different infinite super - populations, and compare the stabilities of estimators of the methods that given above. we find that the minor difference between two super - populations has great effect on the efficiency of the estimators for the population with moderately large coefficient of variation ( c. v. )

    本文首先從理論上介紹了若干種不等概率抽樣方法，它們的估計量、估計量的方差及其估計，其中包括有放回ppz及pps抽樣，不放回不等概率抽樣中的brewer 、 durbin 、 sampford 、 desraj ， murthy 、 rao - hartley - cochran等人的方法；其次，在rao和bayless兩人就樣本單元數n = 2的情形對上述抽樣方法進行比較的基礎上，將總體隨機地分成兩個子總體，視每個子總體取自不同的線性超總體，在文中，我們利用計算機實現隨機分組，並通過畫圖比較各方法估計量的穩定性，結果表明，對變異系數c . v . （ x ）較大的總體而言，兩個超總體之間的微小差異將對估計量的穩定性產生很大的影響，從而說明rao和bayless的比較結果還不夠完善。
  2. The following algorithms have been proposed and tested in the thesis : 1 frequency selective fading : combine the isomorphism between the input space and the output space and propose a new approach to blind equalization of the channel. compared with conventional methods, the new approach offers lower computational complexity, better performance, and more robust against the over - determination of the system order ; 2 time selective fading : a new approach to the equalization of time selective channel based on the zero - forced equalizer is proposed which is more simple in its structure of algorithm ; 3 time - varying channel : using the instantaneous mean value changes of the output signal to extract the information of channel variations and model it using ar model, kalman filter is then employed to track channel variations, it bears faster ability in tracking the variation of tv channels ; based on the isomorphism between the inputs and the outputs and some of the approaches using in mimo system, a new algorithm of equalization of simo time - varying channel is proposed, which also share the merits of being robust against the over - determination of the system order ; model the time - varying channel using the multi - resolution decomposition wavelets, and then a blind identification method based " on the model is proposed ; at last, a new model for equalization and identification of mimo system is proposed

    主要工作在以下幾個方面： 1 、針對頻率選擇性衰落通道：結合輸入輸出空間同構關系提出一種新的頻率選擇性通道均衡方法，與傳統方法相比，該方法計算量更小，收斂速度更快，性能更優，且對系統階次的過確定表現穩健，具有實際均衡應用價值； 2 、針對時間選擇性衰落通道：提出一種基於迫零均衡的時間選擇性通道均衡方法，演算法結構簡單； 3 、針對時變色散通道：利用瞬態均值曲線提取通道時變信息，對之ar建模，利用卡爾曼濾波器跟蹤時變通道抽頭變化，可以快速跟蹤通道變化；基於輸入輸出空間之間的同構關系以及多輸入多輸出系統的處理方法，提出了新的單輸入多輸出色散時變通道均衡與識別演算法，同樣具有對通道階次過確定保持穩健的優點；結合小波多解析度分析提出一種基於小波模型的通道盲識別演算法；研究時變的多輸入多輸出系統的盲均衡與盲反卷積問題，給出一種時變系統處理模型。
  3. The former combines enumeration and sample technique and is easy to implement, but only definite failure modes are simulated, which may be inaccuracy with bulk power system in which high order failures and protection failures are the main cause to instability

    基於蒙特卡羅抽樣的概率穩定模擬演算法可以考慮電力系統的高重隨機故障，並考慮故障間的相關性。模擬法可以模擬多重、連鎖故障對系統暫態穩定性能的影響。
  4. This paper discusses the relation between the sampling period and the stability of sampled - data

    本文討論了抽樣周期與抽樣數據穩定性之間的相互關系。
  5. The company has devoted, since its inception, to a steady and healthy development mode and is the first of this kind in fuzhou region which products were tested qualified, in accordance with the state quality supervision center of fireproof construction materials gb 86241997 graded methods of inflammation of construction materials, by the zhejiang provincial firefighting brigade. its inflammation meets all standards inscribed in gb 86241997 class a non - flammable and ga 160 - 1997 non - flammable inorganic compound board. fuhong class a inorganic dampproof fireproof board is a kind of novel hi - tech board, a class decoration requirement of the gb 6566 - 2001 standard of state environment protection administration environment protection building material technology requiremen symbolizing your distinguished status and an ideal guarantee of your elegant life

    我司致力於穩健發展，產品為福建省福州地區第一家經省消防總隊抽樣，通過「國家防火建築材料質量監督檢驗中心」按強制性國家標準gb 86241997建築材料燃燒性能分級方法進行防火安全性能型式檢驗，其燃燒性能達到gb 86241997規定的a級不燃性及ga 160 - 1997不燃性無機復合板全項性能合格，並同時通過國家環境保護總局綠色環保建材技術要求之gb 6566 - 2001標準的a類裝修材料要求。
  6. A novel method of content - based image segmentation using deformable template matching is proposed. a two - dimensional ( 2 - d ) deformable template based on orthogonal curves is built by pre - computing extensions of the deformable template along orthogonal curves and sampling the curves uniformly. then the definitions of internal and external energy functions are given according to the image segmentation problem, and genetic algorithm is used to obtain globally optimal solutions. the proposed method uses a lower - dimensional search space than conventional methods and reduces the sensitivity of the algorithm to initial placement of the template. experiments on real - world images and in simulations at low signal - to - noise ratio show the robustness and good performance of the method

    本文提出一種採用可變形模板匹配技術進行基於內容的圖像分割演算法.通過預先計算出可變形模板沿著變形的正交曲線，並對模板曲線及正交曲線進行離散抽樣，建立一基於正交曲線的二維（ 2 - d ）可變形模板，針對圖像分割問題定義控制可變形模板進行變形的內、外部能量函數，本文採用遺傳演算法搜索能量函數最小的全局最優解.該新演算法比傳統的可變形模板匹配方法降低了搜索空間的維數，減少了演算法對模板初始位置的敏感.對實際圖像及模擬低信噪比圖像處理的結果表明，新演算法具有良好的分割精度及穩定性
  7. The beam width is stretched. the algorithm performance has the very big weaken. but the convention beamforming algorithm performance is stabler, time delay unbalance, time domain sampling, plane wave supposition and array element the influence which creates to it is not big

    通過比較，高解析度演算法在考慮上述情況后，波束方向出現偏差，束寬被展寬，幅度有很大的衰減，性能明顯下降;而常規波束形成演算法的性能較穩定，延時失配、時域抽樣、平面波假設和基陣的幅相不一致對其造成的影響不大。
  8. Methods of sampling and test for carbonaceous materials used in aluminium manufacture - electrode coke - determination of grain stability of calcined coke using a laboratory vibration mill

    制鋁工業用炭素材料抽樣和試驗方法.第2部分:電極焦炭.第15節:使用實驗室震動粉碎機測定焙燒焦炭的結晶穩定性
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