模擬變量 的英文怎麼說
中文拼音 [mónǐbiànliáng]
模擬變量
英文
analog variable-
Simulations of gain and aberrance are done to study the amplification of pulse signal with a frequency of 0. 25mhz
對頻率為0 . 25mhz的脈沖信號放大進行了模擬,分析了其增益和脈沖畸變隨放大參量的變化情況。A svpwm control algorism for three - level inverter and its simulation
三電平逆變器空間電壓矢量控制演算法模擬研究The diffusion welding behavior of single - crystalline cu to single - crystalline - aio with a nb film interlayer and the joint microstructure properties were studied by tem, sem / eds analyses and four - point bend testing. the nb film interlayer deposited by electron beam evaporation on the ceramic side prior to diffusion welding was found to be olycrytalline and fiber - textured after diffusion bonding, with the close - packed plane ( 110 ) being parallel to the ( 0001 ) basal plane of - aio
擴散連接技術是一門邊緣科學,涉及材料、擴散、相變、界面反應、接頭應力應變等各種行為,工藝參數多,雖然已經進行了大量的試驗研究,但卻對各種材料的連接機理尚未有明確的認識,為此人們試圖藉助于計算技術,對接頭行為進行數值模擬,以便找到共同規律,對擴散連接過程及質量進行預測與實時控制。Based on funds holding stocks sample and whole stocks sample, it uses cck adjusted model to test the existence of herd behavior of funds and that of the whole stock market. then, it inserts dummy variable dt in cck adjusted model to testify whether herd behavior of funds and that of the whole stock market are the same in scale to prove whether herd behavior of funds makes stock prices fluctuate in the whole stock market
本文主要採用實證研究的方法,首先運用cck校正模型,按基金持股樣本和股市整體樣本,分別檢驗基金羊群行為及股市整體羊群行為是否存在;其次,在cck校正模型的基礎上引入虛擬變量d _ t ,建立虛擬變量模型,以檢驗基金與股市整體羊群行為的顯著程度是否相同,從而證明基金羊群行為能否引起股市整體價格的波動。Furthermore, the dissertation deals with institutions as dummy variables and establishes a measure model to go on the research, making a conclusion that the institutions is not only an important factor in urbanization, but also the one, which has the biggest flexibility in the system innovation of urbanization. in the eighth and ninth chapters, factors hampering the regime innovation in urbanization are discussed. then the direction and principles of the system innovation of urbanization are approached
在以上分析的基礎上,論文把城鎮化中的制度因素作為虛擬變量,華中農業大學博士學位論文:我國城鎮化中的制度變遷研究來進行計量模型的建立和檢驗,最後得出結論:制度因素不僅是影響城鎮化進程的重要作用因素,而且在城鎮化進程中制度創新的彈性是最大的。It is just the difficulty that the strongly correlated electron systems can not be studied by analytical methods, a variety of simulative numerical methods come out sequentially. there are a few typical methods such as the exact diagonalization ( ed ), the qutum monte carlo ( qmc ), the variation monte carlo ( qmc ), the renormalization group ( rg ), and the density matrix renormalization group ( dmrg ) and so on
正是強關聯系統遇到了解析研究的困難,各種數值模擬方法才相繼出現,最典型的數值方法有:嚴格對角化( ed ) ,量子蒙特卡洛( qmc )模擬、變分蒙特卡洛模擬( vmc ) 、數值重整化群( rg )以及密度矩陣重整化群( dmrg )等。First of all, i summarize the forecast model category and estimate each model in detail, then, i adopt different model to forecast demand, supply, bdi of bulk shipping market. as to demand forecast, i mainly focus on the imitating precision of primitive data, adopt grey forecast model, self - suited filter model separately, and then compose these models as a better one. as to supply forecast, i use econometrics model to describe the complicated relationship of demand, supply, bdi, gnp etc. as to bdi, i try to draw into market integrated factor, describe the relationship of bdi, supply, capacity, speed, rate of oil, navigating capital etc. then finally, i make afterwards evaluation of these models and then analyze future bulk shipping market in detail
對于需求預測,著重考慮對原始數據的擬合精度,經過模型比較優選論證,分別採用了灰色一階模型,改進的灰色二階、自適應過濾預測的加權組合模型,得到了相當高的擬合精度;對于供給預測,運用計量經濟模型對供給、需求、運價、 gnp 、進出口貿易額等多變量之間復雜的相互關系進行動態模擬,定量的反映出各變量之間的因果關系;對于運價預測,嘗試引入市場綜合因數概念,化繁為簡,通過描述運價與運力供給、載重噸、油耗、航速、燃油價格、航行成本等等諸多因素的關系來進行預測。This text aims to establish mathematics model, everyday randomicity variable to be set up by the discrete transformation method, to set up the simulation parameter form and the moleling and covariance form, draw the procedure flow chart to proceed simulative newspaper calculator problem
摘要通過建立數學模型、運用離散反變換法產生每天賣報數隨機變量、建立模擬參量表和建模及統計變量表、畫出程序流程圖等步驟對報童問題進行模擬。The key factors to make the slide is controlled to make the model be similar in geometry, material and fabric with the antetype, then simulate the infection of river, digging of road and so on, measure the data of the distortion of model, analyze the reason of the distortion and factors of the slide
試驗抓住造成滑坡的主要因素,根據所得的巖石力學參數及結構面參數,在幾何條件、模型材料、結構面條件等方面都基本滿足相似原理的情況下,對模型進行了河流下切、公路開挖等條件的模擬,測量觀察邊坡的卸荷回彈與層面的彎曲變形情況,利用所側數據分析論證滑坡的形成機制和影響因素。In this dissertation, the author presents a model of transforming element fracture net into element equivalent hydraulic conductivity tensor. this model can effectively reflect the obvious anisotropy and non - homogeneity of fracture rock seepage and makes it easier to simulate the various aperture fissure and display the fundamental characteristics of discrete fissure net. in addition, the model is can also make the best use of the sound theoretic foundation of equivalent continuum model
< wp = 5 > 5 、本文提出將單元裂隙網路轉化為等效單元滲透張量的裂隙網路轉換模型(單元網路模型) ,具有真正體現裂隙巖體滲流明顯的各向異性和顯著的非均質性、易於模擬變隙寬裂隙、基本顯示巖體裂隙網路滲流的基本特點、充分利用連續介質模型雄厚的理論基礎等特點。When considering the combined impacts of climate change and the direct effects of co2 ( cc + pe ), the simulated yields for irrigated wheat would increase at most sites. this was because the beneficial effects of co2 elevation might offset in a great extent the unfavorable effects due to shortening of the growth duration
當綜合考慮氣候變化和c伍濃度的直接影響( cc + pe )時, 3種gcms情景下灌溉小麥的模擬產量在絕大多數樣點都增加了,這主要是因為co :增益作用很大程度上可以抵消生育期縮短帶來的減產效應。Secondly, it mainly analyses the actuality of china shipping agency longkou and mentions the main problems that the company is faced to inside herself
最後,文章通過建立帶虛擬變量的回歸模型,對龍口地區的船代市場進行了定量的預測。Chapter 4, empirical test. this part uses the var models to measuring the var of shanghai stock market and shenzhen stock market and analyzed the conclusion. chapter 5, introduce the definition of marginal var, component var and increment var and give empirical test
本部分首先給出了本文的研究方法一摩根集團採用的risk一metrics方法、基於garch模型的garch一t 、 garcll一右ed模型和考慮到我國政策多變性帶兩個虛擬變量的garch一t模型,基於極值理論的var一x方法。As a part of the civil 863 plans, two multiple - contact models for two kinds of braking system are built in the paper, in which contact fields are described as coons surfaces, initial velocity is programmed in fortran. the thermal - mechanical coupling braking processes are simulated for the first time by msc. marc, the general - used nonlinear fem software. time distributions of the velocity, the stress and the temperature of the components under various initial velocity and brake force are obtained, which offer theoretic gist to study the life of the wheel, the disc and so on
作為國家行業863重大課題《鐵路機車車輛虛擬樣機系統》的一部分,本文在研究接觸問題和熱?機耦合問題數值方法的基礎上,採用國際上通用的非線性有限元分析軟體msc . marc建立了踏面制動和盤形制動主要部件的多體接觸計算模型,其中用解析方法描述,即用nurb曲線、高斯曲面來描述接觸區域,用fortran語言編寫定義初速度的用戶子程序,首次對兩種制動過程熱?機耦合進行了數值模擬,定量給出了主要制動部件在不同初速度、不同制動力下各個時刻的速度、應力和溫度的變化規律,為研究車輪、閘瓦以及制動盤壽命提供了理論依據。A functional unit whose output analog variable is the integral of an input analog variable with respect to time
一種功能部件,其輸出模擬變量是輸入模擬變量相對于時間的積分。A functional unit whose output analog variable is equal to the sum, or a weighted sum, of the input analog variables
其輸出的模擬變量等於兩個或多個輸入模擬變量之和或加權和的一種操作裝置?功能部件? 。The reciprocal space map of x - ray difll - action for quantum - wires is simulated successfully. abundant structural intbrmation such as array period, geometric shape, etching depth and strain state, etc. for quantum wires are obtained
模擬了量于線x射線衍射的二三維圖,得到更為豐富的樣品結構信息,例如周期,形狀,刻蝕深度,應變等。Pointing to the data obtained from semi - physical simulation of certain helicopter which mainly has low - frequency noise, a data - processing method of depressing and filtering noise from the signal, using the pagoda - structure re - constructing arithmetic and the wavelet transform principle, is proposed
摘要針對直升機半物理模擬測量數據主要是低頻噪聲的特點,提出利用小波變換、塔式結構重構演算法,對信號進行降噪濾波處理的方法。With increase of the climate variability, the amplitude of increased yield simulated would be reduced. and the variation coefficient ( vc ) of the simulated yields and their instability would also increase
但隨著氣候變率的增大,模擬產量的增幅明顯變小,產量變異系數增大,穩產性變差。This analogue measurement amplifier specially developed for very fast and accurate force measurement is used to adjust the output signal of strain gauge force transducers to make it suitable for information devices or a connected control system
這款模擬測量放大器是特別為快速準確的力測量而設計的,可以調節應變測量力傳感器的輸出信號,使之適應信息設備或所連接的控制系統。分享友人