second variation 中文意思是什麼
second variation
解釋
第二變分-
The dissertation proposes originally the idea of decomposing the time - variant load to solve this problem. first, the time - variant load is decomposed into the time - variant load characteristic and the time - variant load model due to the modeling method. second, the multi - curve approximation method is proposed to identify the load parameters, which to a great extent, reduces the effects on the time - variation of the load model from modeling method
針對負荷的時變性，論文首次提出了將負荷時變性分解的思想，首先將負荷的時變性分解為負荷特性的時變性和由建模方法引起的負荷模型的時變性，然後提出了多曲線擬合參數辨識方法，很大程度上消除了建模方法引起的負荷模型的時變性。 -
Analysis of the sequence variation of cytochrome b gene indicated that there is no evidence of insertions or deletions, i. e., they are all of identical length of 1143 bp in all the sequences of cytochrome b gene. further, the sequences can be fully translated into amino acid using chicken mitochondrial codon without nonsense mutations or intervening stop codons. the 1143 bp cytochrome b alignment contained 416 variable sites, of which 306 were parsimony informative sites with the strongest variable in third codon positions and less variable in first and second codon positions
細胞色素b基因序列變異分析表明： 1 ）雁形目鳥類細胞色素b基因全序列長度一致，無插入和缺失：對照雞線粒體密碼子系統全序列能全部翻譯成氨基酸序列，無無義突變，全序列內部無終止密碼子； 2 ）序列比對后1143加，含416個核著酸變異位點， 306個簡約信息位點，其中處於密碼子第三位的變異最大，第一位和第二位堿基的變異相對較小。 -
The second part consist of chapter four. in chapter one, we study the energy density of harmonic map from finsler manifold and generalize classical result in [ se ]. in chapter two, we obtain lower estimates for the first eigenvalue of the laplace operator on a compact finsler manifold, and it generalize lichnerowicz - obata theorem [ li ] [ ob ]. in chapter three, we derive the first and second variation formula for harmonic maps between finsler manifolds. as an application, some nonexistence theorems of nonconstant stable harmonic maps from a finsler manifold to a riemannian manifold are given
第一章討論finsler流形到黎曼流形調和映射的能量密度的間隙性，推廣了[ se ]中的結果。第二章對緊致finsler流形上laplace運算元的第一特徵值的下界作了估計，推廣了黎曼流形上的lichnerowicz - obata定理[ li ] [ ob ] 。 -
Combined with the real example of monitoring pressure on the supporting system in the long span underground space of dk7 + 692 section at jiao - xin line of chongqing light railway, it is set forth the methods about choosing the support system and its parameter, digging methods of underground space, measuring and testing methods for the stress of the support system ; the testing results and variation pattern were analyzed for the stress of the initial supporting i - steel axial stress of bolt, stress of shot - concrete, supporting pressure of temporary i - steel and stress of steel of the second lining, then, the reason for deformation of the support system induced by sharp increase of i - steel was determined
摘要結合重慶市輕軌較新線大坪車站大跨度地下空間dk7 + 692斷面施工支護體應力監測的工程實例，闡述了該大跨度地下空間支護結構的參數選擇、地下空間的開挖方法、支護體結構的應力量測方法及測試手段；分析了支護體初期支護工字鋼拱應力、錨桿軸力、噴射混凝土內應力、臨時工字鋼支撐應力、二次襯砌鋼筋應力等測試結果和變化規律；確定了工字鋼拱應力急劇增大而可能引起支護體系失穩的原因。 -
Genetic variation in 5 ' - upstream region and the second intron of h - fabp gene in nine pig breeds
上游區和第二內含子的遺傳變異 -
The first reason of dryness index variation is the rainfall change, the second is the chang of accumulated temperature
造成乾燥度變化的主要原因是降水量的變化，其次是積溫的變化。 -
Second, introducing the investigation of continuing education for teachers of middle school in fanchang county, anhui province by questionnaire and relevant interviews according to the theory of learning organization, then pointing out present problems in the course of the continuing education for teachers : a ) the variation in the purpose of continuing education for teachers ; b ) the loss of the subjectivity of continuing education for teachers ; c ) the actual effects of continuing education for teachers being sceptical ; d ) training organization not adapting to continuing education for teachers ; e ) educational planning institution lacking of systematic thinking on continuing education for teachers
此為本研究的理論基礎。第二部分，根據學習型組織理論對教師繼續教育的要求，採用問卷調查和訪談的形式對安徽省繁昌縣中學教師繼續教育情況進行調查，並歸納出了存在的問題：教師繼續教育的目的異化；教師繼續教育的主體性缺失；教師繼續教育的實效性令人懷疑；教師繼續教育培訓機構存在種種不適應因素；教育決策部門對教師繼續教育缺乏系統思考。 -
Abstract : the method to determine the shape of solidification shell in the process of continuous casting of steel is studied. by establishing the model of stable temperature field, with the observation of first and second boundary value on the exterior of the ingot, the algorithm method to identify the shape of solidification shell is given with boundary variation in existing observation condition. numerical test shows that the method is valid
文摘:討論了鋼鐵工業連鑄過程中結晶器內連鑄坯凝殼形狀的確定方法.通過建立穩定溫度場模型，在現有觀測條件下，用邊界變分方法給出了確定鑄坯凝殼形狀的辨識演算法.實驗數據顯示此方法是有效的 -
There is the same characteristics of interannual and interdecadal variation between the first characteristic vecter and corresponding percent of the rainfall anomaly ; the second characteristic vecter which is the most obvious in may has interannual variable characteristics in each month
華北春季及各月降水量第一特徵向量和相應時期的降水距平百分率具有相同的年際及年代際變化特徵；春季及各月的第二特徵向量均存在年際變化特徵， 5月最明顯。 -
According to the raman selection rule and the pl measurement, it is reasonable to evaluate the quality of galnp / algalnp mqw by analyzing the relative intensity ratio of a1p - lo / to. ( 4 ) a new modified random element isodisplacement ( mrei ) model is set up to calculate the dependence between the long - wavelength optical phonon frequencies and the composition of iii - v - type ab1 - xcx mixed crystals. the second neighbor force constants are still assumed to be a linear variation with the composition, but the two first neighbor force constants can be evaluated to be a negative exponent variation with the composition, using the overlapped repulsive potential of the ion crystal combination
通過實驗我們找到了在這些結構參數上生產gainp algainpmqw的較理想的結果； （ 3 ）首次用喇曼（ raman ）散射方法研究了常溫下的gainp algainp多量子阱結構，除了指認出喇曼光譜中各光學聲子模外，還結合樣品光致發光譜的測量結果，分析發現喇曼光譜中alp - lo to的相對強度比可以在一定程度上評定晶體gainp algainpmqw的生長質量； （ 4 ）在修正的隨機元素等位移? mrei模型的基礎上建立了一個新模型，計算了ab _ （ 1 - x ） c _ x型?族半導體混晶的長波長光學聲子模頻率的組分變化關系。 -
In the 3rd section we introduce how to use mathematical model to study financial problems, whose assets running on mixed jump - diffusion process, first we get the famous non - linear feynman - kac formula by fbsde, then let the solution of the bsde be a investor ' s utility function, and it ' s the so - called recurse utility function. second, we can prove that this utility function is a continue viscosity solution of the variation inequality which we get above, and we get the comparison theory. third we can use the result to financial market to study the optimal consumption and portfolio problem or evaluate the american option
第三章介紹了利用金融資產價格運行基於復合跳躍? ?擴散過程的數理模型來研究金融經濟問題，通過結合運用正倒向隨機微分方程，推導得到著名的非線性feynman - - kac公式，並且將相應的倒向隨機微分方程的解記為投資者的值函數，這也就是通常所說的效用值函數；接著我們可以證明此效用值函數為某一偏微積分變差不等式的連續粘性解，並且得到了比較原則；這些結果可以應用到金融領域用於消費投資組合的選擇或是美式期權的估值。 -
In this paper, a class of the second order accurate explicit gauss schemes with staggered grids for the computation of solutions of hyperbolic conservation laws are presented, the advantages of these schemes are : riemann solver - free, faster and programming is much simple, no complete set of eigenvectors is needed and hence weakly hyperbolic system can be solved. in one dimensional case, these schemes are and total variation diminishing and convergence under the restriction of cfl condition, the convergence rate is the first order, and a pointwise error bound is presented
本文在交錯網格的情況下，利用gauss型求積公式構造了一類求解雙曲守恆律的時空一致二階顯式gauss型差分格式，這類gauss型差分格式，具有不需要求解riemann問題、計算簡單、工作量少、編程簡便等優美特點，而且由於這類格式在應用於求解方程組的時候，不需要對方程組進行特徵分解，因此可應用於求解非嚴格的雙曲守恆律方程組。 -
Non - oscillatory and non - free - parameters dissipative ( nnd ) finite difference scheme ( a total variation diminishing scheme ) with second order accuracy was adopted to solve the fluid dynamic equations, a finite rate chemical reaction model was developed to calculate ingredient producing rate, and an adi over relaxation iteration technique was used to solve the electromagnetic discretized equations
採用二階精度nnd格式求解流體力學方程組，採用有限速率化學反應模型計算組分生成率，採用交替方向隱式（ adi ）超鬆弛迭代法求解電磁場離散方程。 -
One of open problems is to study harmonic maps between finsler manifolds and derive the first and second variation formula for harmonic maps between finsler manifolds. firstly, we define harmonic map between finsler manifold. in fact, it is the harmonic map from projective sphere bundle of source manifold to the projective sphere bundle of target manifold
運算元的第一非零特徵值凡全mk .特別地，當『 ，二二k時， m的直徑為六?當m是黎曼流形時，由moer 「定理的推論直接可知m與半徑為去的球等距 -
Second, by combining theories of strength of laminate with ga, a new gradient free optimization method with new code strategy is discussed. the representation itself does not change the nature of the problem, but effects the searching efficiency of the algorithm. so the representation of the parameters to be optimized is a very important factor and the new code strategy is also easy used with crossover operator and variation operator in ga applications
其次，本文根據層合板優化設計的具體問題提出了一種符號編碼方式，雖然優化參數的基因編碼表達方式並不能改變優化問題的本質，但是不同的編碼表達方式對于遺傳演算法搜索的效率和最終的優化結果有著重要的影響，因此優化參數的基因編碼表達是遺傳演算法應用於工程問題中非常關鍵的一步。 -
First, the fact that the phenotypic variation in t1 mainly resulted from transformation of exogenous dna rather than ion beam mutagenesis was verified by rapd - pcr amplification to mutants, exogenous dna - transferred plants and ion beam - implanted plants. second, an absent band, marked by sieg - isso, was found in the rapd - pct amplification to t - 6 and its progenies, which meant that the corresponding mutation was hereditary. this mutation was located between exon 1791 - 2691 and exonl - 395 of abc - transporter gene
T - 6和其t2代植株的rapd - pcr擴增結果中均存在缺失條帶s _ （ 168 - 1850 ， ）表明該缺失條帶對應的變異是可以遺傳的，該變異發生在abc鄭州大學博士論文摘要介即sporter基因exon1791一2691和exonl一395之間。 -
The results showed that the 11 measured cooking and eating quality properties and taste value have manium significance genetic difference ; among the cooking and eating quality properties, varietal variation coefficent of gel consistency, peak viscosity, break down, setback is relatively large ; every cooking quality property has a different correlation with eating quality property, initial pasting temperature, finial viscosity, consistency and setback have significant or maximum significant inverse correlation with taste value, while peak viscosity, break down has a postive correlation with taste value, amylose content and protein content are inversely related to taste value, but gel consistency are positively related to taste value another, the correlation among varietal cooking and eating quality properties is significant or maximum significant ; in the analysis of principal components, the cumulative percent of 4 selected principal components reached 90. 58 %, initial pasting temperature of large second principal components is small, but amylose content and protein content is high, finial viscosity, consistency are large
結果表明，所測定的11項蒸煮食味品質特性及味度值在供試品種間均存在著極顯著的遺傳差異；在蒸煮食味品質特性中，膠稠度、最高粘度、下降粘度值、粘滯峰消減值的品種間變異系數較大；糊化開始溫度、最終粘度、回冷粘滯性恢復值、粘滯峰消減值與味度值呈顯著或極顯著的負相關，而最高粘度、下降粘度值與味度值呈極顯著的正相關，直鏈澱粉和蛋白質含量與味度值呈負相關，而膠稠度與味度值呈正相關；在主成分分析中，被入選的4個主成分的貢獻率達90 58 ，其中第二主成分大的品種，糊化開始溫度低，直鏈澱粉和蛋白質含量高，最終粘度和回冷粘滯性恢復值大。 -
According to the electromagnetic induction theory, abrupt variation of current in the transmitter loop will induce magnetic field around it, which is called the first field. in the transmission of the first field, when it meets good conductor target, induce current will be created, which is called erratic current of second current. because the second current changes with time, so it will create new magnetic field, which is called
對于接收部分，由於瞬變信號具有早期信號幅度大、衰減快，而中晚期信號幅度小、衰減慢的大動態范圍的特點，必須設計適應這種大動態范圍信號的採集電路;為了適應野外工作，系統主控部分採用具有功耗低、高速處理的dsp ，通過高速通用串列介面usb與上位機通訊，實現對整個探測系統的控制。 -
In the second variation, writing a row means modifying an existing row
在第二個變體中，寫一行意味著修改一個現有的行。 -
This second variation is useful for implementing a serializer that applies serialization state to an existing set of objects, rather than always creating a new tree. the
第二種變化適用於實現向一組現有對象應用序列化狀態的序列化程序，而不是始終創建新樹。
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