moment of first order 中文意思是什麼
moment of first order
解釋
一次矩-
It shows that the method and the results can be used for designer, capital construction manager and researcher reference. 6 > the statistic parameters of load effect and resistance on fatigue reliability are studied in the paper. according to statistic analyzing of the real data from spot and the old test data, the fatigue reliability is calibrated on 8 details, which are provided in the code, by first order second moment ( fosm )
6 、通過鋼結構吊車梁實測資料與以往疲勞試驗資料進行統計分析，提出了荷載與抗力的統計參數，用一次二階矩方法對鋼結構規范中規定的8類連接和構造型式的疲勞可靠性進行了校準分析，根據計算結果給出疲勞目標可大連理工大學博士學位論文一靠指標的建議值與分項系數的設計表達式。 -
In order to analyze the effect of aberration of amplitude and phase of laser beam on centroid position of focal spot, based on the fraunhofer formula for light wave scaler diffraction theory, according to the definition of first order moment centroid position, the general expression of focal spot centroid position directly depending on the complex amplitude of near field is derived
摘要為分析振幅和相位發生畸變情況下光束焦斑質心位置所受的影響，以光波標量衍射理論中的夫瑯和費衍射公式為基礎，根據光斑強度分佈一階矩質心位置的定義，推導了直接依賴于光束近場復振幅分佈的焦斑質心位置的一般表達式。 -
The article will join together at that moment chinese the public the culture background passes to emphasize to investigate a series of television in etc. of detection 》 memorials program to the 《 in the same way system, section, humanities, pass to their the text of the some period program this read, proceeding to recount the style with the analysis that appreciate beauty characteristic etc., as to it ' s see to order inside with the construction, story and the analysis of details etc. details, find out its together of development trend, tally up the development that a television for first has the possibility, can can be carried out record the road of the slice. and this text meeting makes at that moment several the problem that is a little bit hots putting and proceeds together deep but again meticulous discussion with consider, the profound influence that predict and can produce once
文章會結合當下中國的大眾文化語境通過著重對《探索發現》等一系列的電視紀實類節目如法制類，科普類，人文類，通過對他們某期節目的文本解讀，進行敘事風格和審美特性等方面的分析，對其中視點與結構，故事與情節等細節的剖析，找出其共同的發展趨勢，總結出一條具有可行性，可以行得通的電視紀錄片的發展之路。而且本文會將當下幾個比較熱點的問題放在一起進行深刻而又細致的討論和思考，預測一下可產生的深遠影響。 -
Result shows, the uncertainty of parameter leads to negative ( positive ) investment horizon effects when investor ' s risk aversion is more ( less ) than that of logarithmic utility ; the effects of parametric uncertainty will weaken when investor uses more past data in his estimation, or when his risk aversion increases ; the effect of the first order moment ' s uncertainty is stronger than that of the second order moment ' s uncertainty
研究表明，當投資者的風險規避程度大於（小於）對數效用時，參數不確定性將導致負（正）的投資期效應；當投資者在估計過程中運用較多的歷史數據、或者風險規避程度增加時，參數不確定性的影響將減弱；收益一階矩的不確定性影響較其二階矩強。 -
This thesis designs automobile braking performance inspecting and control system. this thesis consists of three main parts. something about automobile braking system design has been discussed in the first part according to the main requirement of gb7258 - 2004 《 the requirement for motor vehicle, running safely 》. the hardware has been designed according to the characteristic of the parameter afer establish the whole plan for inspecting it. and then working principle of each part has been introduced. and at last, we designed software depending on the require to inspection and function. we can educe the braking power of both wheels, braking moment retardarce power and other parameters. we designed sensor signal processing circuit which including power sensor signal processing circuit and speed signal measure circuit according to the require of designing parameter. ad620 is used as power sensor. in order to measure the power of the automobile braking and protect the electromotor. so we must measure both
由汽車制動測試原理以及制動性參量檢測的技術指標可知，檢測數據準確性、控制可靠性、實時性和抗干擾能力是系統設計的關鍵。本文在掌握汽車性能檢測系統結構和原理的基礎上，根據國家有關標準和汽車制動性檢測系統的控制邏輯提出了採用單片機為控制器的總體方案，設計了各部分硬體電路，並根據所要實現的功能用c51語言設計了軟體。由於檢測現場存在各種干擾噪聲，為了保證系統運行的穩定性和可靠性以及測量精度的要求，分別從硬體和軟體的角度出發，介紹了常用的硬體抗干擾措施以及軟體數字濾波的原理和方法。 -
In regard to nonlinear stochastic optimization in which the restraint function was nonlinearly expressed with stochastic parameters, the advanced first - order second - moment method was employed to study the structural optimization numerical model based on component reliability or failure pattern reliability and the method to transform the problem of stochastic optimization to that of certain determinate optimization
摘要針對約束函數被隨機參數非線性表達的隨機非線性優化問題，採用改進均值一次二階矩法，研究基於元件可靠度或各失效模式可靠度的結構優化的數學模型，以及將隨機優化問題化為確定性優化問題的方法。
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