Time - variation reliability analysis based on ultimate strength of corroding ship girders 考慮腐蝕影響的船體梁極限承載能力時變可靠性分析
The time - variation reliability formula of the existing bridge in its life cycle is deduced based on markov process 基于馬爾可夫過程得到體現(xiàn)在用橋梁生命周期內(nèi)承載力可靠度時變規(guī)律的計算公式。
The whole problem related to the time - variation of the load is completely solved by the proposed method , the core of which lies in the tva model structure 整個過程中,模型結(jié)構(gòu)的改進是其中的關(guān)鍵。大區(qū)電網(wǎng)負荷建模研究是從模型應(yīng)用角度研究對不同物理地點的負荷進行建模的問題。
We tested the time - variation of means and volatility , results show that the time - variation of means is not obvious , but the time - variation of volatility is very clear 檢驗了均值、方差的時變性,結(jié)果表明均值序列的時變性不明顯,但方差西安理工大學(xué)碩士學(xué)位論文序列的時變性非常明顯。
We introduced some calculated methods of var with static and unconditional distribution , and analyzed the time - variation of volatility using arch model and its general forms detailsly 首先介紹了一些靜態(tài)、無條件分布下的var計算方法,在此基礎(chǔ)上,利用arch及其模型對方差的時變性進行了細致分析。