突變函數 的英文怎麼說

中文拼音 [tūbiànhánshǔ]
突變函數 英文
sudden change function
  • 突 : Ⅰ動詞1 （猛沖） dash forward; shoot out 2 （高於周圍） protrude; bulgeⅡ副詞（突然） abruptly; sud...
  • 函 : 名詞1. [書面語] （匣; 封套） case; envelope 2. （信件） letter 3. （姓氏） a surname
  • 數 : 數副詞（屢次） frequently; repeatedly
  • 突變 : 1 （突然急劇的變化） sudden change; change suddenly; transilience; accident; saltation; revulsion...
  • 函數 : [數學] function函數計算機 function computer; 函數計算器 function calculator; 函數運算 functional operation
  1. A function that has a sudden jump in value at a certain point is said to be discontinuous at that point.

    一個函數在某一點的數值發生突變稱為在那一點是不連續的。
  2. By integrating conventional fourie transformation with the smooth average method of spectrum, the high frequency noise was not only removed, but also the signal was smoothed and the main frequency of the signal was found easily and then was extracted as the coarse features of the signal. on the basis, in order to analyze the detail features of the signal, the signal can be decomposed using the db6 mother wavelet function

    在譜分析方法的傅立葉變換中引入平滑平均法對蜂窩結構材料和纖維增強材料聲-超聲檢測信號進行處理，不僅可以有效地去除信號的高頻噪聲，而且可以平滑信號，突出檢測信號的主頻，實現了對檢測信號「粗信息」特徵的提取；在此基礎上，合理選用db6小波基函數，對信號進行小波分解，對信號的特徵進行進一步的細微分析。
  3. In view of the limitation of the traditional inversion theory and method of the gravity and magnetic field, professional an yulin, etc, worked in china university of geoscience, has come into being the theory system of the all - direction imagery for local gravity and magnetic sources after having researched a few years. the theory system broke through the thinking method of traditional theory system, researched all - direction imagery of the 2d local gravity and magnetic sources by means of complex function theory and researched all - direction imagery of the 3d local gravity and magnetic sources by means of spherical harmonic analysis theory, developed greatly the interpretation theory on the gravity and magnetic field

    該理論體系突破了傳統的重、磁場解釋理論體系的思維方式，採用復變函數理論研究二維局部重磁場源全方位成像，採用球諧分析理論研究三維局部重磁場源全方位成像，大大發展了重磁學科解釋理論，可以在起伏地形、有背景疊加和高頻干擾等復雜條件下，直接反演加疊代修改，求解分佈在有限范圍內的二維和三維重磁場源異常場的多種反演問題。
  4. So the likelihood function of the differential phase peaks can be formed as means to identify m - ary psk

    於是可利用相位突變峰值的似然函數來識別信號為哪一種進制的psk信號。
  5. This thesis chooses b spline wavelet that adapts to the analysis of power system signal, and uses the wavelet transformer to analyze the magnetizing inrush current and inner fault current. a transformer microcomputer protection was designed in this thesis, and in the base of intermission angle principle, a new criterion was established, which pierces through the traditional method with accurate measurement of intermission angle, but analyses the wave by wavelet transform. this criterion is lower in hardware, so it will be realized in the existing hardware

    本文選擇適合電力系統信號分析的b樣條函數作為母小波，對勵磁涌流和內部故障電流進行小波分析，並設計微機型變壓器保護基本配置，在以往間斷角原理鑒別勵磁涌流的基礎上，突破傳統精確測量勵磁涌流間斷角的方法，直接對信號小波變換后的波形進行分析，建立一個新的鑒別勵磁涌流判據，該判據對硬體要求不高，可以在現有一般硬體平臺上實現；並編寫以b樣條函數為母小波的小波變換判據演算法程序。
  6. Secondllv in the 1 d random traffic flow model. the relation function between the correlation and the creation. disappearance. brake probabilities of the vehicles is presented. according to the statistical mechanical approach to the spatial correlation functions. the theoretical results agree with that of the computer simulation. thirdh. based on the bml model. a main - road traffic flow model with two speeds on two dimensions is designed. this model simulate the traffic situation of one main road and several branches in the cit traffic lights placed on the crossing. vehicles breaking ~ vhile running and turning to other direction while jamming. we investigate the ~ ' e1ocitv and flo ~ ~ of the model when the initial densitvthe brake and turning probabilities. the green to signal rati3. thc number of the branches and the period of the signal are changed. then the reasons causing all the kinds of phenomena are analvzed. finallv. we simulate the bml model using the method of lattice boltzmann which ~ vas brought out by liu mu - renand obtain the velocity - density graph similar to the previous result. the upper critical densiw above which there are oniv jamming configurations. and the lo ~ ver critical density below which there are only moving configurations are the same as before. the boltzmann function which is on the lattices shows the moving and jaxmning transition obviouslv. thus it proves the possibilit of this method on the traffic research

    接著，建立了和研究了二維二速的主幹道模型，該模型模擬了城市交通中一條主幹道，多條支道的交通情況，在幹道與支道的交叉路口設置紅綠燈，車輛在運行中可以有對突發事件發生反應的剎車，在發生堵塞時，路口的車輛可考慮通過轉向來緩解交通等各種實際情況的發生，給出了車輛演化的演化方程，並通過計算機模擬，研究模型在改變車輛的初始密度、剎車概率、轉向概率、支道數、紅綠燈信號的綠信比、紅綠燈信號周期等各種情況下支、主幹道車輛的速度、流量的變化，並分析在各種情況下交通狀況的成因，提出改善交通的有效措施。最後，在劉慕仁提出的用格子boltzmann方法研究一維決定論交通流的思路下，將此法推廣到對二維bml模型的模擬上，得到了與用以往方法的研究結果相類似的速度-密度圖線，且車輛從運動相到堵塞相轉變的上下臨界密度是一致的，同時分別給出車輛在處于暢通相和堵塞相時， boltzmann函數在格子上的分佈情況，進一步驗證了此法的可行性。
  7. On the basis of displacement - time series of the slope, a nonlinear dynamic model is set up according to backus generalized linear inversion theory in this paper. due to the equivalence beween autonomous gradient system and catastrophe model, a standard cusp catastrophe model can be obtained through variable substitution. the method is used in analysis of displacement data of huangci landslide and wolongsi landslide and in understanding how slopes evolve before sliding. the result shows that the nonlinear dynamic model can make satisfactory prediction result. is it most important that there is a sudden fall of d, which indicates the occurrence of catastrophe ( when d = 0 )

    研究表明，滑坡變形失穩過程具有混沌和分維特性，可以用分形理論來研究滑坡預測問題，基於對任一連續函數，至少在較小的鄰域內可以用多項式任意逼近的數學理論，運用改進的backus廣義線性反演理論，以斜坡位移時間序列為基礎，反演了斜坡演化的非線性動力學模型。並利用自治梯度系統與突變模型的等價性，通過變量代換得到標準的尖點突變模型。
  8. The cross - zero detection of wavelet transform could detect the gradation image sudden change information, at the same time it could be express the characteristic information the original map ( namely image function plants " jump point " )

    小波過零檢測可以很好的檢測到灰度圖像的突變信息，同時可以很好的表示出原圖像灰度跳變（即圖像函數種的「拐點」 ）的特徵信息。
  9. First the thesis elaborate the basis principles of land sustainable use, according to the natural and social economy situation, the characteristics of the land use, the aids and the principle of evaluation, we work out an index system form four aspects of productivity, protection, viability, acceptability. the weigh of indexes are defined by means of analytic hierarchy process, the standardization of indexes are defined by effective function, then, we use multi - aid decision model which mainly reflects that indictors influence on aim and multi - aid liner function which mainly reflects aim the degree of land sustainable use during 1996 and 1999 in taigu

    論文從土地資源可持續利用的基本理論入手，結合太谷縣的自然、社會經濟狀況與土地利用的特點，依據評價的目標和原則，從生產性、資源保護性、經濟可行性、社會可接受性四個方面，採用專家咨詢法建立了太谷縣土地資源可持續利用評價指標體系，採用層次分析法確定了指標權重，應用功效函數法進行評價指標的標準化處理，運用反映評價指標因子對評價目標的影響程度的多目標突變決策模型和反映評價目標的可持續利用程度的多目標線性加權相結合的方法，對太谷縣1996年到1999年的土地利用情況進行了評價。
  10. Summer precipitation in northeast china ranging from 1960a to 2000a and ncep reanalysis data is applied to study the temporal and spatial features of summer rainfall and extreme precipitation in northeast china. the results show : 1 summer rainfall in northeast china exhibits upward trend with the cycle variation of 14 years and 2 to 4 years. two abrupt changes occurs in summer rainfall with its happening time on 1964 and 1988 / 89

    利用東北地區99個測站的1960 ? 2000年夏季逐日降水資料，以及ncep再分析資料，採用旋轉經驗正交函數、 morlet小波分析、合成分析等方法分析了東北地區夏季降水的演變特徵和降水異常的環流背景，得出主要結論如下： 1東北地區夏季降水存在著減少趨勢，並且有14年和2 4年的周期存在，降水發生過兩次突變現象，分別發生在1964年和1984 85年之間。
  11. Based on 1960 - 2000 daily temperature data of 99stations in northeast china and ncep reanalysis data, the spring temperature in northeast china is analyzed, and the results indicate : 1 the spring temperature in northeast china presents upward tendency and the cycle periods of 14 years and 4 to 6 years. meanwhile abrupt change is significant between the year of 1984 and 1985

    利用東北地區99個測站的1960 ? 2000年春季逐日平均氣溫資料，以及ncep再分析資料，採用旋轉經驗正交函數、 morlet小波分析、合成分析方法研究了東北地區和各不同區域春季氣溫的時空分佈、年際和年代際變化特徵、春季氣溫異常以及低溫過程的環流特徵，並得出主要結論如下： 1 、東北地區春季氣溫存在著上升趨勢，並且有14年和4 6年的周期存在，東北地區春季氣溫存在突變現象，出現突變的時間在1984 1985年間。
  12. Although fuzzy inverter air - conditioner, compared with the traditional air - conditioner, has been proven to be more effective in complex, time - varying and uncertain control system, it has a main problem, that is, its control parameters are set by expert ' s experience beforehand, mostly under standard environment. when indoor environment changing suddenly, the fuzzy inverter air - conditioner are controlled sharply at set member functions and control rules. it will have a great effect on comfortability of human

    但是，由於隸屬函數和控制規則的獲取往往依賴于專家經驗，專家經驗正確與否直接影響空調控制效果，同時隸屬函數和控制規則一旦確定，當環境溫度發生突變時，空調器仍按照既定的隸屬函數和控制規則進行突變，中間沒有一個過渡區，這樣不但會出現控制輸出突變情況（忽上忽下）浪費能量，而且使人感到不舒適。
  13. When a smoothing function ' s first derivative is adopted as wavelet function, the local maxima of wavelet transform modulus detect the location of signal ' s singularities, in this thesis, these characters are not only applied to measure the magnitude of dead angles of the dissymmetry inrush but also the symmetry inrush in three - phase transformer

    當小波函數取光滑函數的一階導數時，信號小波變換的模在信號突變點將取得局部極大值。本文利用這些性質不僅對三相變壓器的非對稱性涌流間斷角的大小進行測量，同時還測量了對稱性涌流的間斷角，測量精度有一定的改善。
  14. The sudden change in ψ caused by a measurement is called the reduction of the wave function.

    由測量引起的的突變叫做波函數的收縮。
  15. As for the m - ary psk signals, the differential phase peaks at the transients are used. the pdf ( probability density function ) of the differential phase peaks of m - ary psk are the mean of m - 1 pdfs of m - 1 phase peaks

    由於進制的數字調相信號每個子碼間具有個相位突變，其相位突變的峰值滿足一個概率密度為的分佈，若信號為元psk信號，則相位突變峰值的概率密度函數就是個概率密度之和的平均。
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