模態序數 的英文怎麼說
中文拼音 [mótàixùshǔ]
模態序數
英文
modal number-
And the deficiencies are pointed out in present researches, such as highway capacity, level - of - service, influence factor of road alignments, etc. from these, it has confirmed that the thesis should be studied from rational analysis, quantitative analysis of level - of - service, impact on capacity of road alignments, setting - up simulation model, etc. the high - accuracy gps dynamic data acquisition appearance is proposed to be used for the first time to carry on the experiment of overtaking on two - lane highways, and experiment scheme is designed according to the driver ' s perceive to judge each overtaking course. based on the experiment data, it can get two important parameters of acceptant gap ? the critical gap of overtakable time headway and returnable time headway through data processing, which can offer the strong support to the research of two - lane highway capacity with qualitative and quantitative analysis. besides, the experiment methods is provided to observe overtaking ratio and to measure the
研究中首次提出了運用高精度gps動態數據採集儀對雙車道公路上的超車行為進行觀測，設計了根據駕駛員感受度來衡量超車過程的實驗方案，並通過後期數據處理得到了超車過程中兩個重要的可接受間隙參數-可超車車頭時距和可回車車頭時距的臨界間隙值，為定性和定量分析雙車道公路通行能力提供有力的數據支持;同時，還提出了觀測超車率的實驗方法以及測量加速度干擾的實驗方案，統一了計算加速度干擾的時間統計間隔，為雙車道公路的服務水平量化研究奠定基礎;最後還簡單介紹了駕駛員問卷調查法和模擬程序中模型參數標定和驗證的數據採集方法。( 2 ) the liman problem is normally adopted to check the liability of numerical method. the calculation error was within 9 % by comparison with the theoretic solutions of liman problem in the following case, the dimensionless calculation length was 2 with high pressure zone 0. 8, and the dimensionless state parameters were p1 = 2, p2 = 1, p1 = p2 = 1, u1 = u2 = 0. experiment results in literature [ 8 ] were used to check the adaptability of the numerical model developed here for unconfined gas cloud explosions and the calculation error was within 13 %
（ 2 ）數值方法的可靠性通常用黎曼問題的解析解檢驗，本文以無量綱計算區長度為2 ，高壓區長度為0 . 8 ，狀態參數為p _ 1 = 2 ， p _ 2 = 1 ， _ 1 = _ 2 = 1 ， u _ 1 = u _ 2 = 0條件下的黎曼問題解析解對所編制的爆炸場計算程序進行了考核，結果表明該程序的計算誤差在9以內；為考核本文計算模型預測開敞空間氣雲爆炸的適用性，以文獻[ 8 ]的實驗數據進行了校核，計算誤差在13以內。In addition, the ao index released by american climate prediction center ( cpc aoi ) fails to reflect the summer ao mode. in this paper, the time series of the leading principal component of the summertime ( june - september ) surface level pressure anomaly field over the domain poleward of 20 n is defined as the summertime ao index
此外，美國氣候預測中心發布的全年北極濤動月指數不能表現夏季北極濤動型，本文將北半球熱帶外地區（ 20 n以北）夏季（ 6 - 9月）海平面氣壓場eof主模態的時間序列定義為夏季北極濤動指數。In order to grasp the urban system processes and evolution pattern of hunan province comprehensively, this article has made further discussion on its structure characteristic : through regression analysis, graph analysis and statistics analysis of the time series data and cross sections data, by combining with the fractal theory, we induce the following conclusion : the hierarchical size structure presents the law of the primate city, the rank - size rule and pyramid structure characteristic, but it also has the insufficient development problem of the high hierarchical size city. by using the gravitation model, we found out that the economy relation intensity among those main cities is weak while the structure is loose. based on the urban layer system of economic development level and industrial structure evolution of the cities in hunan province, this article then induces the function combination among the five urban agglomerations in hunan province
為全面把握湖南城市體系的運演規律，本文對其結構特徵作了進一步的探討:通過時序數據和截面數據的回歸分析、圖表分析和統計分析，結合分形理論，得出了其等級規模結構分佈呈現出首位分佈、位序?規模分佈和金字塔結構特徵，以及存在著高層次城市發展不足的問題;運用場引力模型發現該省主要城市間的經濟聯系強度較弱、結構鬆散，在歸納出該省城市經濟發展水平的層次體系、產業結構演變的基礎上，導出了該省城市體系的五大城市群職能組合;結合空間結構體系、路網交通條件和經濟發展狀況，對該省城市空間分佈狀態進行了定性分析，研究表明該省總體上處于極化階段，各個具體區域，分佈階段不一，差異較大。With the development of automobile industry and road transportation ， the traffic accidents happen every day in the world and become a serious society problem the vehicle collision accidents are over 2 / 3 times as much as all traffic accidents they cause a large amount of social infuence and serious economic loss therefore ， it is urgent to study vehicle collision accidents comprehensively and systematically ， and the research also is the academic foundation to analyze and deal with traffic accident it is difficult to authenticate car velocity after traffic accident to dig over locate witness is right way mechanics is avaid tool in this field it is important to establish math model and this is precondition to calculate vehicle velocity firstly on the basis of summarizing the research results ， this paper deeply discusses the calculating model to analyze the instantaneous motion state in the vehicle collision, the interrelation among the every moving mechanics parameters in the every phase of the collision secondly ， according to the collinear collision and two - dimension collision and the restitution coefficient ， the paper estabishesthe post collision movement models it proves that these models are correct and valid thirdly ， this paper try to research reconstruction of road traffic accident and put forward the method on it
對交通事故的科學分析應是建立在正確的數學模型與計算機模擬技術基礎上的定量分析，其基本條件就是要有能正確描述事故過程中汽車狀態的數學模型，只有建立正確的數學模型，才能較準確地推定事故車輛的碰撞速度。所以建立正確地車輛碰撞模型和運動模型正是汽車事故再現的關鍵問題。本文首先在總結前人研究的基礎上，深入地研究汽車碰撞理論，分析了車對車碰撞作用瞬間狀態的計算模型及碰撞恢復系數與碰撞前、后速度的關系；其次，根據交通事故中最普遍的一維和二維碰撞的不同情況，採用恢復系數和滑動摩擦系數等概念，分別建立了碰撞后車輛動力學模型；第三，對汽車碰撞事故再現進行了初步研究，確定了車對車碰撞事故模擬計算和反推計算方法，並給出相應的模擬程序流程圖。Lastly, computer programs for the dynamic analysis and time series method are compiled in matlab
利用matlab語言編制了相應的求解機構運動學、動力學問題和應用時間序列法辨識模態參數的程序。Finite element method ( fem ) was used to simulate thermal and vibration problems in stacked - die csp assembly. finite element models and apdl programes were built in ansys to conduct thermal, thermal - mechanical and vibration analysis. the aim of these researches were trying to find some possible reasons and trends which affect the reliability of stacked csp / bga assembly and give some useful suggestions for the packaging design
本論文正是針對以上情況，以採用引線鍵合工藝的三維疊層csp / bga封裝（裸晶元疊裝）為研究對象，在有限元分析軟體ansys中建立相關的有限元模型，編制了相應的apdl參數化分析程序，進行了溫度場分析、熱循環加載下的snpb合金焊點疲勞分析和實裝pcb板的振動模態分析。Besides the design of the hardware construction for shape meter, the software system written in visual basic 6. 0 is also developed. the real - time data acquisition and conversion system worked in interrupt mode is accomplished by means of loading dynamic linkage library of pcl - 812pg enhanced multi - lab card. the converted data processing will be operated then, for example, scale operation, comparison, graphic display, data storage, etc. the adjusting values for the shape control are also calculated in it
本文在參考大量帶材標準板形、軋制初始量設定、調節量計算研究的基礎上，確定了標準板形模型、設定模型、調節控制模型等數學模型；並給出了其相應的演算法；完成了板形儀計算機控制系統的硬體設計，並在此基礎上，應用高級開發語言visualbasic6 . 0 ，通過加載pcl - 812pg多功能數據採集卡的驅動程序后，調用動態鏈接庫（ dll ）中的函數的方法，完成了信號中斷方式下的實時數據採集，採集的數據經計算機作標度變換、對比、圖形顯示、存儲等處理，並提供了用於板形閉環控制的調節量。Matlab procedure is coded to compute the far - field sound pressure levels of the shell excited by radial point force. the influences of modal truncation, stringers, bulkheads and damping on the shell ' s far - field sound pressure are analyzed, laying down the basis for accurate analysis of the sound radiation from fluid - loaded reinforced double cylindrical shells
本文用matlab編製程序求解了單層殼在徑向激勵力作用下的遠場聲壓級，分析了模態截斷數、縱骨、艙壁板、結構阻尼等因素對殼體遠場輻射聲壓的影響，為準確計算加筋雙層殼在水下振動和聲輻射特性奠定了基礎。At the beginning of this article, we give the analysis about the principle of external condensation. we find out that the most important factor in the condensation is the temperature of the air in the system. and we point out the factors which can make influence in the external condensation, such as the temperature and the humidity of the environment, the temperature and the pressure of the supplying air, the load of the system, the area of passage of speed control valve, and so on. next, we give the mathematics model of the pneumatic system using the knowledge of aerodynamics and heat transfer theory. and using the finite difference method and the numerical analysis we can get the solutions of the model. we use c program to simulate the model
本文首先對氣動系統外部結露的原理進行了分析，指出了氣動系統內部氣體溫度下降是氣動系統外部結露根本原因，提出了影響氣動外部結露的主要因素，包括環境溫度、環境濕度、供氣壓力、供氣溫度、氣缸負載和調速閥開度等。然後應用氣體動力學、氣體熱力學和傳熱學對氣動系統建立數學模型，用逆步進有限差分法和數值分析演算法對所建模型進行求解，利用c語言編製程序對氣動系統模型進行模擬，給出了氣管及氣缸內氣體的各個時刻的狀態參數。Sa is a stochastic optimization technique and a zero - order algorithm requiring no derivative information and has been used extensively to solve continuous, ordered discrete and multi - modal optimization
模擬退火法（ kirkpatrick等， 1983 ）是一種隨機的優化技術，它是零階演算法，不需要導數信息，廣泛地用於解決連續的、有序離散及多模態優化問題。On the base of analysis of hydrologic geology from aquifer distribution, boundary conditions and dynamic characters etc. in the research area, the paper sums up the hydrologic geologic condition, builds up the conceptual model of groundwater resource evaluation and presents 2d calculation model, as well as numeric solution and computing flow chart. after introducing general solutions of mathematic models and implementation method of rectangular grid, the paper realizes the automatic technique of spatial dispersion rectangular grid of evaluation models based on gis. finally, the paper fulfills the integration of gis with groundwater resource evaluation models from gis - based basic management information, spatio - temporal dispersion of models, definition of subprogram and visual evaluation of parameters, as well as models simulation etc., and visualizes the results of evaluation models
論文以地下水超采?地下水降落漏斗?地面沉降現象較為嚴重的常州、武進地區作為研究評價區域，在對評價區域的含水層分佈、邊界條件和動態特徵等水文地質條件分析的基礎上，概化了其水文地質條件，構建了相應的地下水資源評價概念模型與數學模型，並給出其數值解法和相應的計算流程；論文在介紹數學模型的兩種常用數值解法和模型空間離散的矩形網格生成技術的基礎上，實現了基於gis的評價模型空間離散矩形網格的自動生成；最後，論文從基於gis的評價模型基本信息管理、模型空間時間離散方法、子程序包與模型計算參數可視化賦值、模型的擬合等方面實現了gis與評價區域的地下水資源評價模型的集成，並將模型評價結果可視化。In this paper we use the gait database which each sequence has only one person walk in the same background. two background modeling methods are studied : rgb and gray, comparing the two methods, we chose the first which is more effective
首先，從步態序列圖像中檢測步態，本文採用的是靜止背景下的單人步態數據庫，研究了rgb空間和灰度背景建模方法，經過性能比較我們選取了前者。Secondly, two carbon fiber reinforced composite beams were fabricated, and their modal frequencies were measured by an experiment method. thirdly, delaminations were modeled by pairs of nodes with the same coordinates but different node numbers, while the modal frequencies of these beams with different delamination location and size were computed by an eas piezoelectric solid element. moreover, a novel method combining computational mechanics and neural network was demonstrated for composite health monitoring ; the first five flexure modal frequencies obtained by fem were modified by a primary revising approach and were used to train the neural network
本文較全面地評述了神經網路的應用模型、改進演算法等，編制了bp神經網路程序：制備了纖維增強復合材料試件，並進行實驗模態分析；利用坐標相同、節點號不同的方法模擬脫層損傷，基於eas列式的壓電固體單元計算了不同脫層損傷情況下的頻率信息；針對基於實驗數據訓練神經網路存在樣本不足的缺陷，本文提出了利用有限元方法對含有脫層損傷的復合材料試件進行數值模擬，以前五階彎曲模態頻率構建訓練樣本的新思路，並提出了一種初步的計算值修正方法，以此構建神經網路的訓練樣本：將實驗模態分析的結果送入訓練好的神經網路進行預測，實現了對復合材料梁的脫層損傷的定位和損傷程度的評估。Identification of time - varying modal parameters of structure using output error time series model
利用輸出誤差時間序列模型識別結構時變模態參數By the help of matrix and difference equation, we give an expression of likelihood function of normal distribution ma ( 0, 1 ) sequence, which has important application in mordem control theory
藉助矩陣和差分方程，具體給出了在實際中具有重要應用的一類數學模型? ?正態ma （ 0 ， 1 ）序列的似然函數的一種顯式表示，即具體表示成了模型參數的函數Based on online parameter estimation of the arma. innovation models, using the modern time series analysis method, the several self - tuning kalman tracking filters are presented, where the three different algorithms of the kalman tracking filter gains are used
基於arma新息模型參數的在線估計，應用現代時間序列分析的方法，提出了若干自校正kalman跟蹤濾波器，其中，應用了求kalman跟蹤濾波器穩態增益的三種不同演算法。Therefore, research on improving the image resolution of sar and isar continuously has been a hot as well important topic. time series echo signal can be decomposed to imfs ( intrinsic mode function ) by emd ( empirical mode decomposition ) algorithm, which is distributed following frequency
經驗模態分解（ emd : empiricalmodedecomposition ）方法能夠把時間序列信號分解成有限數目的本徵模態函數（ imf : instrinsicmodefunction ） ，分解結果按頻率高低分佈。( 2 ) the finite element program ansys is used to analyze the elastic buckling of rectangular tube, consequently the buckling load pcr and the simulating formula for the restraint coefficient &, is obtained. the results derived from the program are compared with the british standard and china standard
（ 2 ）採用有限元程序ansys對矩形鋼管板組進行了彈性屈曲分析，得出其臨界荷載p _ （ cr ） ，彈性屈曲模態與解析法所作假設相符，並擬合出均勻受壓下的矩形鋼管約束系數k _ 1的公式，並與英國規范和我國規范進行比較。The use of the batten interpolation for modal parameter in the curvature modal and flexibility difference curvature method can solve the contradiction between decreasing measure points and the guarantee of identification precision ; the identification program has also been developed in matlab : as long as the former 3 step vibration shape and frequency are input, the value and the graphic representation of damage identification will be obtained by flexibility difference curvature method
本文應用曲率模態法、柔度差值曲率法當中，對模態參數用樣條插值，較好地解決了減少測點與保證識別精度的矛盾；在matlab軟體中開發了識別程序：只需輸入前三階振型和頻率，即可由柔度差值曲率法給出損傷識別的圖示與數值結果。分享友人