隨機變動 的英文怎麼說

中文拼音 [suíjībiàndòng]
隨機變動 英文
random fluctuation
  • 隨 : Ⅰ動詞1 （跟; 跟隨） follow 2 （順從） comply with; adapt to 3 （任憑; 由著） let （sb do as he li...
  • 機 : machineengine
  • 隨機 : random stochasticrandom
  1. A river quality management model is proposed for the optimal waste load allocation in a tidal river basin, taking into account the impacts of stochastic pollutant discharge and dynamic hydrological conditions on water quality during a tidal cycle

    摘要考慮污染源強隨機變化和感潮河流潮周期內動態水文條件對水質的影響，建立了優化污染負荷分配的流域水質管理模型。
  2. The bouc - wen differential equation model is used in modeling the hysteretic characteristics of these components. the pem ( pseudo excitation method ) combined with the elm ( equivalent linearization method ) is used to analyze the non - linear random vibration of such structures

    採用bouc - wen等提出的微分方程模型描述進入非線性構件的滯變特性，運用虛擬激勵法結合等效線性化進行結構非線性隨機振動分析。
  3. So the chanmical properties and the effect of the timbering form, foundation modulus and stiffen coefficient of the pipelines under static loads were studied, which provided the research basic for the chanmical properties of the pipelines under dynamical loads. the mutual effect of the pipelines and the soil under the dynamical loads is belonging to a coupling system

    管道與土體在動力下的相互作用是一個耦合系統問題，本文從荷載、土體、管-土整體三個方面深入探討了動力荷載下管-土耦合系統的基本特徵：隨機性、動態變化性、耦合性、非線性等。
  4. In order to meet the needs of recent research in applied probability, such as finance and insurance, risk theory, random walk theory, queueing theory and branching processes and so on, the concepts of heavy - tailed random variables ( or heavy - tailed distributions ) are introduced. they are one of the important objects many scholars are concerned on. on the other hand, in a risk process, the number of these heavy - tailed variables " occurrence until the time t, i. e. all kinds of counting process, is one of the important objects, which many scholars are studying

    在應用概率的許多領域，如金融保險、風險理論、隨機游動理論、排隊論、分支過程等，重尾隨機變量或重尾分佈都是重要的對象之一，另一方面，在一個風險過程中，到t時刻時，這些重尾變量出現的個數，即各種記數過程，也是人們研究的主要對象之一，本文主要對重尾分佈的控制關系與極值過程的跳時點過程的精緻漸近性進行深入的討論。
  5. This paper deals with the static and dynamic output kinematic accuracy of a group of elastic slider - crank mechanisms with the same design parameters by taking the bar length, joint - gaps, mass density, interception and physical parameters as random variables

    摘要將彈性曲柄滑塊機構的桿長、截面尺寸、鉸鏈間隙、質量密度、彈性模量等幾何、物理參數均視為隨機變量，對機構輸出運動進行了靜態和動態誤差分析。
  6. The transverse stiffness limitation index ? the permissible ultimate width / span ratio b / l of the continuous steel truss girder of railway bridge is analyzed in accordance with the analytic theories of random vibration of train ? bridge time - variation system and the required derailment coefficients and comfort of drivers and passengers in train running through the bridge. the limitation index in question may be referred to in the design of the continuous steel truss girders of railway bridges

    基於列車-橋梁時變系統隨機振動分析理論，按照橋上列車脫軌安全系數和司機、旅客舒適度的要求，對鐵路連續鋼桁梁橋橫向剛度限值-橋梁容許極限寬跨比b / l進行了分析，對鐵路連續鋼桁梁橋的設計具有一定的參考作用。
  7. The influences of optical feedback and external cavity length on the laser output are studied, and the relation between fluctuations of speckle signal and the transverse velocity of rough surface is discussed

    分析了隨機變化的反饋強度與外腔長度對激光光譜特性的影響。模擬了散斑干涉信號的波動與粗糙表面橫向移動速度的關系。
  8. Cool wall wizard dreaming to automatically download various colors wallpaper to work intensely all day into your computer, no longer feel monotonous and boring ; extremely rich in the network wallpaper, the 12 classification, support manually download new wallpaper ; intelligent frame rapid trimming technology, adaptive various popular display size ; timing can be manually or replacement of desktop wallpaper, different timing of the transformation also supports random transform mode ; circle player in the process, support the insertion of local wallpaper, wallpaper and local networks of pictures that turn ; to hide / show desktop icons, wallpaper and user - friendly viewing ; since the launch set to boot, the first time you gave surprise ; cool wall wizard provide three kinds of styles console skin ( white fashion, classic black, gray and elegant ) ; wallpaper borders can set the color to the background transparent desktop text

    雪狐酷壁精靈自動下載各類絢麗的壁紙，讓整天對著電腦埋頭工作的你，不再感到單調、無聊；極豐富的網路壁紙庫，十二大分類，支持手動下載新壁紙；智能邊框快速切邊技術，能自適應各種流行的顯示器尺寸；可以定時或手動更換桌面壁紙，提供不同變換時間的選擇，還支持隨機變換模式；循環播放過程中，支持插入本地壁紙，實現網路壁紙和本地圖片的交替顯示；可隱藏/顯示桌面圖標，方便用戶觀賞壁紙；允許設定開機自啟動，第一時間就給你驚喜；酷壁精靈提供有3種風格的控制臺皮膚（白色時尚、黑色經典、灰色典雅） ；還能設置壁紙邊框的顏色，讓桌面文字的背景透明。
  9. Seismic response analysis of a long - span cable - stayed bridge under random seismic excitations with spatial variations, including travelling effect, incoherence effect and local site effect, was made with stochastic method

    摘要以南京第二長江大橋南漢橋為例，採用隨機振動分析方法研究了地震動的空間變化特性，包括行波效應、部分相干效應以及局部場地效應對大跨度斜拉橋地震響應的影響。
  10. In this paper i calculate the reasonable possession quantity of port handling machineries with chance - constrained linear programming. first in the paper is the background and meaning of this research ; then analysis present situation of port machinery management both in practice and theory ; in chapter 3, i qualitatively discusses characters influencing machinery quantity, which include lifting ton, intact rate and using rate, age of machinery, machinery purchase and working cost and so on. in chapter 4, i take the influencing characters to mathematic model of chance - constrained linear programming, aiming to maintain the need of production and reduce machinery cost

    文章首先介紹了選題的背景、意義以及主要工作；第2章介紹了港口機械管理在港口企業管理中的地位與作用，以及我國港口機械設備管理與配置現狀，並簡要介紹目前港機合理擁有量的理論研究方法；第3章從技術與經濟角度定性分析了各種因素對港機擁有量的影響，其中主要包括機械起運量、完好率與利用率、機械設備役齡、購置與營運成本等；第4章將各種影響因素引入模犁，提出以完成生產任務、機械成本最低為目標，應用隨機線性規劃模型計算港口流動機械合理擁有量的方法；第5章以大連港大港區為例對模型進行應用，選擇四種型號叉車為研究對象，對其歷史經濟與技術數據進行統計分析，其中重點對隨機變量單位臺時維修費用進行了正態分佈擬合。
  11. Based on the theory of stochastic finite element, the structural parameters of frame - shear structure including stiffness and mass and damping are simulated to be stochastic variables. by solving recurrence equation of stochastic finite element, the duration curve of mean value and standard deviation of seismic response can be obtained for every floor of frame - shear structure. an analysis is thus given to the effects of independent variation and simultaneous variation of structural parameters on the seismic dynamic response of frame - shear structure. as shown by the results, with regard to frame - shear structure, the effect of variation of strucural parameters on the change of mean value are chiefly the increase of standard deviation of response. variation of stiffness will cause the response of frame - shear structure to variate greatly ; variation of mass shows less effect ; and variation of damping shows insignificant effect. the effects of simultaneous variation of various structral parametres on seismic response are only slightly greater than the effect of stiffness variation alone

    以隨機有限元理論為基礎，將框剪結構的剛度、質量、阻尼等結構參數為隨機變量.通過求解隨機有限元的遞推方程，得到框剪結構各層的地震動力響應均值和標準差歷時曲線.分析結構參數單獨變異，以及同時變異對框剪結構地震響應的影響.研究結果表明，對框剪結構而言，結構參數的變異對響應的均值變化影響都不大，主要是增大響應的標準差.剛度的變異性將引起框剪結構的響應發生大幅度變異，質量的變異性影響稍小，阻尼的變異性影響不顯著.結構各參數的同時變異，對框剪結構地震響應的影響，僅比剛度單獨變異的影響稍大
  12. By means of trigonometrical progression method and the mainline track spectrum, the sample function of the chinese mainline railway track random geometric irregularity is simulated. with the data obtained from track geometry inspection car on qinhuangdao - shenyang special line for passenger transport and arma time series model, the sample function of high - speed railway track random geometric irregularity are simulated. based on existing literature, the artificial bogie crawl waves at various different speeds are randomly simulated

    根據我國干線鐵路軌道譜，採用三角級數法模擬出干線鐵路和準高速鐵路軌道不平順的樣本函數；根據秦沈客運專線高速試驗段軌檢車資料，採用arma時間序列模型模擬了高速鐵路軌道不平順隨機樣本函數；在既有研究資料的基礎上模擬出各種速度客車構架人工蛇行波；用隨機變量描述道床橫向剛度，並進行了隨機模擬；將振動理論和穩定理論結合建立系統的分析模型和運動方程；根據monte ? carlo法編制了車輛?軌道耦合系統隨機振動分析程序，進行了無縫線路隨機動力響應分析，通過試驗對計算模型、計算方法進行了驗證。
  13. According to the fluctuating property of wind, on the stochastic vibration finite element theory, some calculation formulas of the response, including the along - wind response and the across - wind response, are obtained, the ideology of the torsion vibration in the double - tower structure and the ideology of the double - tower structure ' s dynamical wind load are also put forward at the same time. by using the stochastic vibration module of the general finite element program, the paper analyses the performance of the wind resistance more deeply and fully, discussing the influence on the double - tower structure from the diversification of the different component. the variance law of dynamic displacement and wind - induced vibration coefficient is derived through analyzing structure stochastic vibration, so is the effect of several parameters on dynamic displacement, acceleration and wind - induced vibration coefficient

    從結構風振的基本理論出發，通過對脈動風功率譜的分析，推導了結構風振響應（順、橫風向）的計算公式，同時提出了雙塔結構的扭轉振動和動力風荷載計算的思想，在結合通用有限元程序的隨機振動模塊的情況下，對雙塔結構的抗風性能作了深入、全面研究，探討了雙塔結構構件截面的變化對其抗風性能的影響，同時探討了順風向風速譜的選取、風速、參與計算的振型數、風與結構耦合作用是否考慮等因素對分析結果的影響，比較了規范風振系數的計算與隨機演算法結構的異同，並討論了原因，得出一些有意義的結論。
  14. For guaranteeing the supply and the maintenace with the continuous and the balanced, business enterprise to must store the supplies of the certain quantity, this is the stock. that quantity is excessive, and not only take up the large quantity of warehouse area, return possibility because of the long - term put off but make the supplies damage change in character, result in wasted ; quantity over little, because of the need of undulate and provide with the machine a phenomenon for indetermination for time of delivery, may very take placing supply falls short of demand, give produce to maintain to take to lose, so that must enhance science management towards stock

    為了保證供應和維修的連續性和均衡性，企業必須儲備一定數量的物資，這就是庫存。庫存數量過多，不僅要佔用大量的倉庫面積，還可能由於長期積壓而使物資損壞變質，造成浪費；數量過少，由於需求的隨機波動及供貨單位交貨時間的不確定性，很可能發生供不應求的現象，給生產維修帶損失，因此必須加強對庫存的科學管理。
  15. Considering the fuzziness of some boundary conditions enviroment media, and especially some loads in the engineering structure analysis, we go further into the computation based on the dynamic problem of fuzzy finite element ( ffe ), study further and systematically the analysis and solution. the principle of fuzzy minimum potential energy is established, and the balance equation of fuzzy finite element is reasoned by making fuzzy variation. at the same time, the dynamic balance equation of stochastic by making stochastic variation ， also the fuzzy stochastic dynamic balance equation is deduced. based the theory that the degree of the fuzziness and probability can be measured, in the other word, by using the concept of fuzzy entropy and entropy, pure fuzzy dynamic structure is given through transforming the probability to fuzziness. for the fuzzy parameter can be regarded as a fuzzy vector with dimensions, the structure ' s eigenvalue, by the theory of small parameter

    建立了模糊瞬時最小勢能原理，運用模糊變分原理導出了模糊有限元動力平衡方程；同時，利用隨機變分原理導出了動力問題的隨機有限元方程，同時得到了模糊隨機動力問題的有限元平衡方程。根據模糊度和概率度可以度量的原理，即利用模糊熵和概率熵的概念，把結構的隨機性等效地轉化為結構的模糊性，得到純粹模糊性的動力結構。把結構所具有的模糊參數看作一個維的模糊向量，利用小參數攝動原理，把結構的特徵值，特徵向量和位移都在模糊向量的均值處進行泰勒展開，得到一組遞歸方程，即可以求得結構的模糊特徵值，特徵向量和模糊位移。
  16. We implement the traffic generator by these studies. the thesis focuses on how to generate abundance flow, how to send flow fastly, how to measure network, how to synchronize flow sender and flow receiver. we use some solution to resolve the problems, including that using linear congruential and modifying select - giveup algorithm to generate random number, implement class that has good application interface to user, making random number as packet ’ s inter - departure - time and packet size, which can provide flow base on special distribution, designing and implementing a method to active measure by our traffic generator, designing a accurately time counter and precision delay function, synchronizing flow sender and receiver by tgm message

    通過對現有技術的研究和改進，我們形成的解決方案如下:通過利用改進的線性同余演算法，以及對舍選法進行研究和改進，實現了一個具有良好應用介面的隨機變量生成器，利用其產生的隨機數作為發包的間隔或包的尺寸，以產生服從特定模式的流;利用傳輸的數據包設計並實現了網路的主動測量，為網路測量和流的發送設計了高精度的計時器，精確延時函數;利用自定義的tgm報文協調發送端和接收端的操作。
  17. ( 2 ) setting up a stochastic interest rates model of evaluating mineral resources assets based on the basis of the option a stochastic interest rates method has been structured and a stochastic interest rates method of evaluating mineral resources assets based on option has been set up

    （ 2 ）建立了基於期權的礦產資源資產估價隨機利率模型構造出利率變化的一般隨機波動模型，在此基礎上推導出基於期權的礦產資源資產估價隨機利率模型。
  18. Focusing on a tuning fork vibratory gyroscope fabricated through silicon bulk micromachining, the matrix perturbation technology in the random finite element method was introduced to analyze the statistical characteristics of the natural frequencies and output capacitance of tuning fork vibratory gyroscope

    摘要以一種通過體微機械加工技術制備的音叉振動式微機械陀螺為對象，基於隨機攝動技術定量計算了微陀螺固有頻率變異和檢測輸出電容變異的統計特徵，以概率思想表達了微陀螺批量加工過程所帶來的材料尺寸隨機誤差對其性能的影響。
  19. It is the researchful purpose of this paper that the methods of appraising the existing structural reliability basing on own information are found, which will impel the methods of appraising the existing structural develop from applied methods to probability methods. the contents of this paper have mainly four, including : firstly, the normal value of permanent load in the existing structure is ascertained by the way that is called bayes - small capacity, which considers the dates of design and the road - test dates. secondly, by introducing the random variable that is statistical ambiguity, the statistics of loading and resistance of existing structure are researched

    本文研究目的是針對現有結構的特點，建立基於自身信息的現有結構可靠性的實用評定方法，推動我國的現有結構可靠性鑒定方法由實用鑒定法向概率鑒定法發展，主要研究內容包括四個方面：一、結合結構原設計數據和現場抽樣實測數據，研究了恆載標準值的統計推斷方法，提出bayes小樣本統計推斷方法；二、利用統計不定性隨機變量，結合現有結構的特點，提出荷載、抗力變異性的小樣本統計推斷方法；三、分析了現有結構抗力變異性的主要影響因素，並利用實測數據進行了實例分析；四、針對現有結構自身的荷載、抗力統計特性，研究了現有結構承載力的校核表達式，對恆載、抗力分項系數提出修訂建議，建立了基於自身信息的現有結構可靠性實用評定方法。
  20. At 1999, lim nguyen first brought forward a novel self - encoded spread spectrum ( sess ) system, which spread spectrum sequence is full builded by the source data. in sess system, which does not use pn codes. it employs random spreading sequences that are extracted from the information data

    自編碼直擴通信是limnguyen在1999年首次提出的一種利用信源數據產生擴頻序列的隨機直擴技術，它產生具有隨機的、動態可變的擴頻序列，因而是一種較好的安全通信方式。
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