特徵指數 的英文怎麼說

中文拼音 [tèzhǐzhǐshǔ]
特徵指數 英文
character index
  • 特 : Ⅰ形容詞（特殊; 超出一般） particular; special; exceptional; unusual Ⅱ副詞1 （特別） especially; v...
  • 徵 : 名詞[音樂] （古代五音之一 相當于簡譜的「5」） a note of the ancient chinese five tone scale corre...
  • 指 : 指構詞成分。
  • 數 : 數副詞（屢次） frequently; repeatedly
  • 特徵 : characteristic; feature; properties; aspect; trait
  • 指數 : 1. [經] （比數） index number; index 2. [數學] exponent
  1. We describe the meaning of chaos > future idea of chaotic theory and influence on forecast ; introduce the character of chaotic time series, and point out the problem and shortage of the methods already existed computing character value which are fractal dimension and the largest lyapunov exponent and improve on it ; present the forecast principle of forecast method based on chaotic attractor, and point out the shortage of local field forecast method based on chaotic attractor and bring forward improved on methodo at the same time, we put forward a banausic algorithm and compare two models using practical example

    論述了混飩的含義與混淪理論的未來觀及其對預測的影響；介紹了。混飩時間序列的特徵，指出了己有的計算分形維及最大李雅譜諾夫指數這兩個特徵量的方法存在的問題與不足，並對此進行了改進；給出了基於混飩吸引子的預測方法的預測原理，指出了常用的基於混燉吸引子預測的局域法的不足並給出了改進方法，同時，給出了其實用演算法，並用實例進行了比較。
  2. The other research purpose is to discover characteristic information and reliable methods of reflecting spinal cord damage. due to typical damage indicators, amplitude and latent period, have bugs such as limited information and weak stabilities, this project recommends applying time - frequency analysis to monitoring spinal cord function. through analysing and comparing typical signal with stft and cwt, it is proved indicators under time - frequency distribution can be better in reflecting signal changes, espcially the wavelet transformation

    針對目前ep監測中判定脊髓損傷的指標（波幅和潛伏期）存在信息量相對較小、穩定性較差的缺陷，本課題提出利用時頻分析技術對術中脊髓功能監護進行研究，通過短時傅立葉變換和小波變換分析和比較典型信號的時頻分佈，證明時頻特徵參數能更有效的提取信號的變化信息。
  3. ( 4 ) based on the qualitative analysis results of geology and employing grey - clustering analysis method, the quantitatively discriminating pattern of the size of remaining oil potential is founded. through selecting feature indices and setting up brighten function and clustering weightiness of these indices, we can identify the most potential area ( s ) quantitatively

    通過合理選擇表徵剩餘油潛力的特徵指標、建立特徵指標的白化函數及其判別模式，對評價對象的各類潛力指標進行灰聚類分析，最終指出評價對象所屬的潛力級別。
  4. In the meanwhile, the best community that was picked out from natural deciduous broad - leaved forest was taken as contrast. and the hight, dominance, soil fertility, coverage, composition and biomass of the community were used as community characteristics parameters to comprehensively evaluate the restored degree of communities at different restoration stages

    同時，在天然闊葉落葉林中選取一個最佳群落作為參照，運用群落高度、顯著度、土壤肥力、蓋度、組成結構和生物量6個指標為群落特徵參數，對各個階段群落恢復的程度進行了綜合的評價。
  5. The main work and conclusion for this paper is as following : according to the flashover test results of several kinds of iced insulators under positive voltage and negative voltage, this paper obtained : for the single porcelain insulator, the single glass insulator and the composite insulator bridged completely by icicle, the metal cathode ' s strong ability of emission electron is the primary reason that results in the lower negative flashover voltage ; the position difference of the high resistance district in method anode side results in that porcelain insulator cluster and glass insulator cluster have an evident effect of polarity ; when less ice and no icicle at the brim of the sheds, due to numerous non - polar arcs on the composite surface, the effects of polarity of composite insulator was lost using the test method of the average flashover voltage in the freezing period, dc flashover performances were investigated of several insulators with some typical structures and different material

    本文的主要工作和結論如下：在人工氣候室內，根據不同覆冰絕緣子正、負極性下的閃絡試驗結果，得出負極性電弧金屬陰極的強電子發射能力造成了單片瓷、玻璃絕緣子及被冰凌橋接的合成絕緣子有較低負極性冰閃電壓；正極性電弧金屬陽極側產生高電阻區所處位置的差異使得瓷和玻璃絕緣子串具有明顯的極性效應；覆冰較少時，合成絕緣子表面出現數量較多的非極性電弧使合成絕緣子無極性效應。利用覆冰期內平均閃絡電壓的試驗方法，對不同材質和結構的絕緣子在覆冰、低氣壓和污穢共存環境中的直流閃絡特性進行了研究。試驗結果表明，直流平均閃絡電壓隨著海拔的升高、覆冰量的增加以及污穢度的增加而降低，且其特徵指數與絕緣子結構、覆冰量、覆冰狀態、污穢度等有關。
  6. A real physical system may involve many variables but only one or more of them can be detected by modem data collecting equipment in recent years, the technique of phase space reconstruction is frequently applied to analyse and process time series. its significance is that the topological characteristics such as fractal dimension can be obtained, on the basis of investigation and research about the technique of phase space reconstruction up - to - now, this paper is also devoted to develop a new method for the prombles of detecting deterministic chaos of time series obtained from experimental data

    一個實際的系統可能會涉及多個相變量，但在實際問題中只能得到部分相變量的信息，近年來人們發展了相空間重構方法，能夠通過單變量信息重構吸引子，這種方法在時間序列分析和處理中得到廣泛應用，其意義在於能在拓撲等價意義下恢復吸引子的拓撲特徵，本文第三章在國內外有關時間序列的相空間重構研究狀況基礎上，致力於發展對時間序列進行確定性檢驗的新方法，即研究時間序列的分佈規律和赫斯特指數，並在相空間重構的基礎上，提取吸引子的特徵指數。
  7. Using the summer rainfall data from twenty - six observatories in shandong province from 1961 to 2001, the subtropical high index data from 1961 to 2002 and the monthly mean reanalysis data of wind, moisture, height and olr of ncep / ncar from 1958 to 1998, the characteristics of abnormal circulation in the northern hemisphere, the abnormal strength and location of subtropical high, the abnormal strength of monsoon and water vapor transport over the areas of east asian were studied

    利用山東26個代表站1961 2001年夏季降水、 1961 2001年副高特徵指數以及1958 1998年ncep ncar再分析月平均風場、高度場、比濕、 olr等資料，對山東夏季發生旱澇的北半球大氣環流、副熱帶高壓、東亞夏季風以及季風區水汽輸送等異常特徵進行了合成對比分析。對山東夏季旱澇形成的原因，從季風區水汽輸送和出現降水異常的物理機制等方面進行了較深入的研究。
  8. By using data of index of subtropical high between 1951 and 2000, we discovery that it has 3. 5 and 2. 5 year oscillation, it accords with precipitation oscillation and show that it is principle effect of precipitation. analysis of vorticity and divergence show that subtropical high affect precipitation, drought and flood by 500 & 700hpa vorticity and 850hpa divergence. vorticity and energy index of subtropical high are sign of chinese precipitation, drought and flood

    利用1951年至2000年副高特徵指數及渦度、散度、水氣通量散度物理量，小波分析發現，西太平洋副高面積和強度有3 . 5年周期，北界指數有2 . 5年和5年周期，這和中國降水、旱澇變化趨勢一致，說明副高是影響降水主要因素之一。
  9. In chapter five, let { xt, i 1 } be - mixing sequences with identical distributions, which belong to domain of normal attraction with non - generational and stable distribution. with probability one, we have limsup a. s

    第五章，設x _ n ， n 1是同分佈-混合序列，其分佈屬于特徵指數為（ 0 2 ）的非退化穩定分佈的正則吸引場，證明了依概率1有
  10. The study results show that the minimum ac flashover voltage decreases with the increase of the ice amount accreted on the insulator surface by an exponential law, and the down - trend of the minimum ac flashover voltage will slow gradually with the bridging of the shed of the insulators by icicles, both the average saturated ice amount and the special exponent m of effect of ice amount for different insulators depend on the radius of shed and the air - gaps of the sheds of the insulators, and that the ac ice flashover voltage decrease with the decrease pressure ratio p / p0 ( rise of the altitude ) by power - law for different esdd and icing - states when the altitude is from 4000m to 5500m. the special exponent n, which show the effects of altitude on the flashover voltage, is various with the type of insulator, icing - states and the surface status of iced insulator etc., and that the minimum ac flashover voltage of iced insulators decreases by power - law with esdd or the freezing water conductivity for different ice amount and atmospheric

    研究結果表明：在不同海拔高度和等值鹽密esdd下，絕緣子的最低交流冰閃電壓均隨覆冰量的增加而呈指數規律降低；當覆冰量增加到一定程度后，最低交流冰閃電壓隨覆冰量增加而降低的趨勢趨于飽和；不同絕緣子串的平均飽和覆冰量及閃絡電壓的覆冰量影響特徵指數m均與絕緣子的盤徑和傘距等因素有關；在海拔4000 5500m之間，不同等值鹽密esdd和覆冰狀態下，絕緣子的交流冰閃電壓隨海拔高度的增加（氣壓的降低）與p / p0呈乘冪關系降低，氣壓影響特徵指數n與絕緣子類型、覆冰類型、覆冰表面狀況等因素有關；當覆冰量和氣壓一定時，絕緣子的最低冰閃電壓均隨著等值鹽密（ esdd ）或覆冰水電導率的增加而呈乘冪關系降低，並逐漸趨于飽和。
  11. As an example, the time series of china composite stock index is considered firstly, the distribution of five day ' s return on china composite stock index is studied. secondly, based on the r / s analysis hurst exponent is worked out and determination detecting can be done. lastly, the topological characteristics such as correlation dimension and maximum lyapunov exponent are extracted from time series

    作為例子，本文對中國股票指數時間序列做了實證分析，首先研究了中國股票指數的五天收益率的分佈規律，然後運用重標極差分析方法計算出赫斯特指數，並以此為基礎進行確定性檢驗，最後在相空間重構的基礎上提取吸引子的拓撲特徵指數。
  12. The variation trajectory of liapunov exponents of car - following fleet and the variation orderliness of average speed, average headway and average space on steady condition were discussed

    文章從分析城市快速道路跟車行為入手，利用李雅普諾夫特徵指數，定性與定量相結合，討論了跟馳車隊中的混沌特性。
  13. Phase space reconstruction technology and characteristic indices algorithms, which show the wide prospects of engineering application, are presented to in order to distinguish dynamical behavior underlying observed time series from rub - impact rotor

    提出了具有工程化前景的相空間重構技術和統計特徵指數演算法，以評判碰摩轉子觀測數據所隱含的動力學行為。
  14. In chapter 3, firstly, we do some demonstration on the long memory character and the statistical cycle of the return series using the r / s analysis method and the dfa method, and we do some research on the stability of the r / s analysis method, the difference and the contact between the two methods too. secondly we account the characteristic index and the tail index of the fractal distribution, we do some demonstr - ation study on the tail index of our country ’ s return series. lastly we summarize the results of our demonstration

    第三章中，首先運用r / s分析法和dfa法對中國股市收益率的長記憶性和統計循環周期進行了實證研究，並且研究了r / s分析法的穩定性以及r / s分析法與dfa法的區別與聯系，其次我們論述了分形分佈中的特徵指數以及尾部指數，對中國股市收益序列的尾部指數進行了實證研究，最後總結了實證研究的結果。
  15. We try to use the proposed method to understand of information processes in brain. main works of the dissertation are as follows : firstly, introduced the model of wang - smith cnn, and its dynamics characteristics, such as lyapunov exponent ( le ), bifurcation and dissipative have been analyzed thoroughly. based on this, an improved wang - smith cnn is proposed, whose dynamics characteristics also have been analyzed thoroughly

    本文所作的工作主要有：首先，簡要介紹wang - smith混沌神經網路模型並深入分析該模型的動力學特性，這主要包括兩個方面：一方面是分析只含有一個神經元時系統的lyapunov特徵指數、分岔現象以及系統的耗散性；另一方面是分析含有多個神經元時系統的lyapunov特徵指數和系統的耗散性。
  16. By virtue of the stochastic bifurcation theory, the transition of the atom movement at a crack tip in fatigue damage system is investigated. using the singular point theory of one - dimensional diffusion process and the stochastic averaging approach of energy envelope, a micro - model to describe the atom movement at the crack tip in homoclinic bifurcation fatigue damage system, which is in the presence of stochastic perturbation, is established. after the study on the characteristic of the diffusion exponent, the drift exponent and the character exponent of the fatigue damage diffusion process on singular boundary, the bifurcation behavior of a homoclinic bifurcation fatigue damage system, which is in the presence of parametric white noise, is examined

    採用隨機分叉理論，探討疲勞損傷系統裂尖粒子運動性質突變.利用一維擴散過程的奇點理論，並結合能量包絡的隨機平均法，建立了隨機擾動的疲勞損傷同宿分叉系統裂尖粒子運動模型，通過研究奇異邊界的擴散指數、漂移指數以及特徵指數特性，考查疲勞損傷裂尖粒子運動的同宿分叉系統受參激白噪聲影響的分叉行為
  17. Beginning with the problem of interlaced region between farming and herding, the boundary line of the interlaced region is calculated based on grid with 10km grid ; then the relation among land use of the region, soil erosion and erosion region is analyzed ; based on factor classification, no useful factors were neglected and stepwise regression method was used to analysis the drive of land use change ; fractal method was applied to analysis the degradation of land - use and relation among land use, soil erosion and wind - water erosion zone ; environmental variances are introduced to establish characteristic index of land use change and analysis the effect of land use change on soil erosion

    從農牧交錯帶的實質問題入手，基於10公里網格，計算農牧交錯帶的界限；在此基礎上分析農牧交錯帶的土地利用、土壤侵蝕及與風水侵蝕帶的關系；在因子分層的基礎上，剔除不需要因素，採用逐步回歸的方法，進行土地利用變化驅動力分析；運用分形方法分析土地利用的退化，並分析土地利用與土壤侵蝕的關系，引入環境變量，建立土地利用變化特徵指數，分析土地利用變化對土壤侵蝕的影響。
  18. In addition the h. kantz method is applied to analyze the time series of the motor current, the maximal lyapunov exponent calculation is realized, the criterion for the motor chaos is brought forward, the existence of chaotic phenomenon in the induction motor is verified by the characteristic exponents, which proves theoretically that the chaotic movement is one of the reasons that results in the low frequency oscillation of the induction motor system

    應用h . kantz方法對電機電流信號的時間序列分析，實現了最大李亞普諾夫指數的具體演算法，提出了電機出現混沌運動的判定根據，通過特徵指數驗證了異步電動機現象的存在，從理論上說明混沌運動是異步電動機系統產生低頻振蕩的原因之一。第三部分深入研究了系統低頻振蕩的主要影響因素。
  19. The change of atmospheric pressure reflect the change of the altitude and the change of the temperature 、 humidity and relative air density in the different altitude region, so the atmospheric pressure is able to be use for the characteristic parameter of token the effect of the altitude on external

    氣壓可作為表徵海拔高度對外絕緣放電電壓影響的特徵參數；高海拔地區空氣間隙和絕緣子串的放電電壓u均可表示為相應海拔下氣壓的冪函數，即u = u0 （ p / p0 ） n ，其中氣壓對放電電壓影響的特徵指數n與電壓類型和放電間隙的結構類型以及絕緣子類型等有關。
  20. The land use structure indexes and soil erosion intensity indexes in sichuan province are calculated and the results show that the changing trend of the land use structure indexes is in accord with that of the soil erosion intensity indexes, proving that the prediction of soil erosion intensity with the land use structure indexes is reasonable and practical

    摘要研究計算四川省土地利用結構特徵指數和土壤侵蝕強度指數結果表明，該省土地利用結構特徵指數與土壤侵蝕強度指數的變化具有同步性，用土地利用結構特徵指數預測其土壤侵蝕強度變化是合理可行的。
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