相對變化率 的英文怎麼說

中文拼音 [xiāngduìbiànhuàlǜ]
相對變化率 英文
relative rate of change
  • 相 : 相Ⅰ名詞1 （相貌; 外貌） looks; appearance 2 （坐、立等的姿態） bearing; posture 3 [物理學] （相位...
  • 對 : Ⅰ動詞1 （回答） answer; reply 2 （對待; 對付） treat; cope with; counter 3 （朝; 向; 面對） be tr...
  • 率 : 率名詞（比值） rate; ratio; proportion
  • 相對 : 1. （面對面） opposite; face to face 2. （非絕對的） relative 3. （比較的） relatively; comparatively
  1. The unfolding of business cycles determines the changes in the relative return of stocks, bond and cash asset

    經濟周期的變遷決定了股票、債券和現金等資產相對收益率的變化。
  2. Backed up by the soplat theory based on particle kinematics, the second chapter of this paper presents with analysis and simulation of several single observer passive measurement models, which uses such relative movement parameters as bearings changing rates and centrifugal acceleration information on the basis of bearings measurements. in the third chapter, the observability of location respectively using bearings and its changing rates information and centrifugal acceleration information is analyzed, and its observable condition is got. the fourth chapter puts forward the modified covariance extended kalman filtering ( mvekf ) against the defect of traditional extended kalman filtering ( ekf ), whose performance is simultaneously compared in the chapter with the performance of ususal tracking algorithm such as ekf, mgekf, iekf by computer simulation

    在近年來提出的基於質點運動學原理的單站無源定位理論基礎上，本文第二章提出了幾種在角度測量的基礎上增加角度變化率及相對運動的離心加速度等運動學參數的單站無源測量模型，並對它們進行了分析和模擬；第三章分別對利用角度及其變化率信息定位和利用離心加速度信息定位的可觀測性進行分析並得到了相應的可觀測條件；第四章針對傳統擴展卡爾曼（ ekf ）方法的缺點，提出了一種修正協方差的擴展卡爾曼濾波（ mvefk ）方法，並將其和ekf 、 mgekf 、 iekf等常用的單站無源定位濾波方法進行了性能模擬比較；第五章通過引入雷達機動目標跟蹤方法和模型，提出了利用角度及其變化率對機動輻射源跟蹤的多級噪聲自適應方法和imm方法；第六章主要對角度變化率和離心加速度參數的獲取技術進行了研究，提出了幾種高精度測量脈沖序列多普勒頻率變化率的方法。
  3. In this dissertation, two kinds of optimization, methods are proposed. firstly, only these linking weights corresponding to the control rules that affect the control performance significantly are updated in order to reduce the compute works and speed up the training progress. secondly, the updating step is adjusted adaptively in accordance with the error and the change of error of the system based on the t - s model to get better performance

    針對模糊神經網路控制器一般存在著在線權值調整計算量大、訓練時間長、過度修正權值可能導致系統劇烈振蕩等缺點，提出了兩種模糊神經網路控制器的優化方法：在線自學習過程中僅對控制性能影響大的控制規則相關的權值進行修正，以減小計算量，加快訓練速度；基於t - s模糊模型，根據偏差及偏差變化率大小動態自適應調節權值修正步長，抑制控制器輸出的劇烈變化，避免系統發生劇烈振蕩。
  4. A monte carlo algorithm was presented to model the relation between the scattering phenomenon, depolarization changes and sea water depth, it is discovered that the radius of scattering point and the degree of depolarization increase with increasing of the sea water depth. at last, a optical engineering software ( lighttools ) is introduced to simulate optical scattering in the deep sea water, and studys the corelation between scattering and relative refractive index, particle density and particle size in the sea water. the experiment results show that the intensity of scattering will increase evidently with the increasing of particle size, particle density and relative refractive index. the methods and results in the article provide the basic theory and experiment validation for improving performance of communication, detection and imaging under sea water

    本文以球形粒子的mie散射理論、 stokes矢量法以及mueller矩陣來研究海水的散射特性和散射中的退偏振度變化;通過montecarlo方法模擬藍綠激光在海水傳輸過程中的散射現象以及散射中的退偏度變化與海水深度的關系，發現隨著海水深度的增加，散射后的光斑半徑、退偏振度將逐漸增大。最後通過光學工程軟體（ lighttools ）對海水中的散射進行模擬實驗，研究散射與海水中粒子密度、粒子大小和相對折射率的關系。實驗結果表明，隨著粒子半徑、粒子密度和相對折射率的增加，散射的強度將顯著增加。
  5. We find the decay rate of 7be in be is smaller than that in au. the change of decay rate ( 0. 71 + 0. 32 ) %, indicates that the environment can indeed alter the decay rate, and the electronic affinity is not the only factor affecting the decay rate, so that one has to take the structure of the host materials into account in explaining the change of the decay rate

    本工作將反應p + 7li 7be + n產生的7be分別注入至預計電子親和勢相差較大的材料be和au中，測量7be在這兩種材料中的衰變率的變化，發現7be在be中的衰變率要小於在au中的衰變率，其相對變化為（ o
  6. The single - observer passive locating method with phase difference rate of change and some key technologies - are studied in this dissertation on the applying background of locating remote slow offing targets with fast plane. this dissertation is outlined as follows

    本文面向快速運動的空中觀測平臺對海面慢速運動目標定位的特定應用背景，利用相位差變化率方法進行了單站無源定位體制和關鍵技術的理論研究。
  7. In view of the regression characteristic and the configuration maintenance demand of the regional coverage satellite constellation, the constellation configuration is optimized using the linear relations between the semi - major axis and inclination and the rates of change of the ascending node right ascension and phase, which enhance the long - term stability of the satellite constellation configuration, simultaneously the sub - stellar and the phase are controlled through changing the deviations of the semi - major axis and the inclination

    摘要針對區域覆蓋衛星星座的回歸特性和構型維持需求，利用軌道半長軸和傾角與升交點赤經漂移和相位角漂移變化率之間的線性關系來優化星座構型參數，提高衛星星座構型的長期穩定性，同時通過協同控制軌道半長軸和傾角漂移量來實現區域覆蓋星座構型維持。
  8. From the formula the relative change rates of land use various counties ( cities, districts ) of chuzhou can be derived

    由公式可以得出滁州市各縣（市、區）土地利用變化相對變化率。
  9. Abstract : the effect of turbine characteristic on stable sectional area of surge tank can be expressed by the synthetic characteristic coefficient of turbine, it shows the effect of turbine efficiency. based on the analysis on the variation of the characteristic curve for middle or high specific speed turbine, this paper demonstrates that the largest stable sectional area of surge tank is not dependent on the lowest water head of hydroelectric plant but the design head

    文摘:通過理論推導，研究了水輪機綜合特性系數對調壓室穩定斷面的影響，即水輪機運行中不同工況點效率的相對變化對調壓室穩定斷面的影響.得出了最危險的調壓室穩定斷面取決于設計水頭，並通過實例得到驗證
  10. A fast algorithm for wavelet transform is also proposed and applied in the extraction of the phase change rate for complex wavelet transform of stable - state stator current, which can detect broken rotor bar faults effectively

    本文將該快速演算法應用到電機穩態電流信號復值小波變換的相對相位變化率提取中，用以診斷異步電機的轉子故障。
  11. With the wanbolin district in taiyuan city as the basic area of the study, this dissertation studies on the disciplinarian of the change of cultivated land, applying gis techniques and statistical method. as findings show that under the temptation of urbanization and industrialization, the use conversion of the cultivated land in wanbolin district has its own dynamic characters since 1990 : the quantity of cultivated land has been keeping diminishing ; while construction using and gardening is the main way of the cultivated land use transform ; the land fragmentation degree of landscape is decreasing ; the center of gravity of cultivated land distributing is keeping moving towards the outfield of the urban fringe

    本文選取太原市萬柏林區進行實例研究，以統計方法結合gis技術對研究區域耕地轉化的變化規律進行分析，結果顯示出在城市化和工業化的不斷沖擊下， 1990年後萬柏林區的耕地轉化呈現出：耕地數量持續下降、以城市建設用地和精細園藝用地為主要流轉方向、耕地相對變化率由靠近市區的城鄉結合部內側向外圍逐漸下降、耕地的景觀破碎度降低、耕地分佈重心不斷向城鄉結合部外側偏移等重要動態特徵。
  12. This paper is based on rs and gis, analyses the characteristics of luc of three periods in daqing city, discusses the traits of lucc of different periods, and discusses the driving forces from two aspects - nature factor and social factor, and forecasts the future land use pattern, points out the focus of land use continuable development. this research includes three significant problems, they are : the gaining of the lucc data in daqing area, the translation of land use pattern and its driving forces research, forecasts of the future land use pattern research. in the process of the study, we obtain the data that we need through manpower estimation and interpretation based on gis, then put the results into software envi, reclassify land use types using masking technology and decision tree

    本次論文以黑龍江省大慶市為研究對象，基於遙感和gis平臺，提取了1979年、 1990年、 2001年區域土地利用/土地覆蓋數據，分析了研究區三個時期的土地利用/土地覆蓋特徵，利用單一土地利用動態度、綜合土地利用動態度、土地利用相對變化率等參數模型從土地資源數量、土地利用程度及土地利用區域差異等方面，探討了不同時期區域土地利用/覆蓋演化的特點，並從自然因素和人文因素兩個角度探討了區域lucc驅動力，最後利用馬爾科夫鏈模型對區域土地利用格局的發展趨勢進行了預測研究，提出了區域土地利用可持續發展的重點，為轉型時期的大慶市土地利用決策提供參考。
  13. Using conception of relative rate of change, a definition of probability density function is given based on the class of differentiable monotone function which is bounded on domain of definition, calculation and properties of the mathematical expectation are discussed

    摘要對一類單調可微的有界函數，利用相對變化率的概念，定義了一種由該函數生成的概率密度函數。
  14. The improved method is used to predict the existence and the approximate location of the crack by using relative changes of frequencies and modal shapes of the damaged platform, in the absence of parameters of the intact structure

    提出了利用2次測量頻率變化量的頻率檢側方法，在無未損傷模型參數的情況下也可以發現損傷的存在，並對損傷進行初步定位；同時提出利用不完全振型的相對變化，判斷某些構件的斷裂。
  15. The relative change rate of land use type is an index reflecting regional difference of change of land use

    土地利用類型的相對變化率是一種反映土地利用變化地區差異性的指標。
  16. During the time shown in the chart in figure 9. 2, the stocks changed places a number of times in their relative rate of change

    這段時間的圖表顯示見圖9 . 2 ，可以發現，這些股票相對變化率的排位有多次的改變。
  17. By calculating the relative change ratio of the cultivated land, the author analyzes the difference of the cultivated land changes in the different sections of zhangye oasis

    通過引入耕地面積相對變化率計算分析了張掖綠洲各區縣耕地資源變化的區域差異。
  18. Based on the investigation data of land use change of yangzhou city between 1996 and 2004, this paper describes the process of land use structure change and its regional differences with the index of relative change rate

    摘要以揚州市1996 - 2004年土地利用變更調查數據為基礎，對其土地利用結構變化過程進行了描述，並選取相對變化率指標，分析了變化的區域差異。
  19. The concept of relative movement and the describing method of relative movement rate of dynamic measurement system are shown. a dynamic error neural network topology structure corresponding to the established system is designed. a cognizing matrix of error source and the transfer, classifying model of dynamic error source are put forward

    敘述了動態測量誤差的構成要素和表徵，給出了動態測量系統的「相對運動」概念和相對變化率描述方法，設計了與所建模型相對應的動態誤差神經網路拓撲結構，提出了誤差源認知度矩陣和動態誤差源傳遞、分類模型。
  20. The relative change rate of a specific land use type of a region can be represented as : ua and ub represent the areas of a specific land use type of a region at the beginning and end of the study respectively ; ca and cb represent the areas of a specific land use type of the area studied at the beginning and end of the study

    區域某一特定土地利用類型相對變化率可表示為： 、分別為區域某一特定土地利用類型研究期初及研究期末的面積； 、代表整個研究區某一特定土地利用類型研究期初及研究期末的面積。
分享友人
分享到 Line

分享到臉書