The hybrid model is a combination of non-linear algebraic equation group and differential or difference equation group, and possesses the ability to integrate equations in inhomogeneous expression form.

本課題抓住這一前沿研究女人阴道口被插视频，從經(jīng)驗(yàn)知識(shí)與經(jīng)驗(yàn)數(shù)據(jù)的綜合利用入手，對(duì)軟測(cè)量模型的結(jié)構(gòu)一级A片一级A片性视频、模型構(gòu)建方法以及軟測(cè)量系統(tǒng)的關(guān)鍵技術(shù)進(jìn)行深入研究日韩欧美中文字幕免费第一页。

By discussing the position hypothesis of fractional-dimension derivative about general function and the formula form the hypothesis of fractional-dimension derivative about power function, the concrete equation formulas of fractional-dimension derivative, differential and integral are described distinctly further, and the difference between the fractional-dimension derivative and the fractional-order derivative are given too. Subsequently, the concrete forms of measure calculation equations of self-similar fractal obtaining by based on the definition of form in fractional-dimension calculus about general fractal measure are discussed again, and the differences with Hausdorff measure method or the covering method at present are given. By applying the measure calculation equations, the measure of self-similar fractals which include middle-third Cantor set, Koch curve, Sierpinski gasket and orthogonal cross star are calculated and analyzed.

通過討論一般函數(shù)的分維導(dǎo)數(shù)的位置假設(shè)及冪函數(shù)的分維導(dǎo)數(shù)的形式假設(shè)激情小说视频，進(jìn)一步明晰了冪函數(shù)的分維導(dǎo)數(shù)、分維微分及分維積分的具體方程形式国产欧美日韩视频在线，給出分維導(dǎo)數(shù)與分?jǐn)?shù)階導(dǎo)數(shù)的區(qū)別，隨后討論了基于一般分形測(cè)度的分維微積分形式定義導(dǎo)出的自相似分形的測(cè)度計(jì)算方程具體形式日本一区二区精品好黄，給出了其與目前 Hausdorff 測(cè)度方法的區(qū)別，并對(duì)包括三分 Cantor 集合久久精品女人天堂A片、 Koch 曲線、 Sierpinski 墊片及正交十字星形等自相似分形在內(nèi)的測(cè)度進(jìn)行了計(jì)算分析操欧美性爱。

Differential difference equation is a kind of powerful means to investigate the rule of natural phenomena, whose qualitative analysis has always been the hot spot subject to be studied in the recent years.

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Sales, in turn, is related to advertising expenditures via a differential or difference equation termed a state equation.I...

本文僅介紹其中兩類最重要的廣告動(dòng)態(tài)最優(yōu)控制模型免费囯产黄片无级A，并在此基礎(chǔ)上對(duì)所介紹的模型進(jìn)行評(píng)析，同時(shí)指出進(jìn)一步研究的方向__级黄色视频。

A sufficient condition for the oscillation of bounded solutions of a kind of second order neutral differential difference equation s established.

建立了一類二階中立型微分差分方程有界解振動(dòng)的充分條件，且當(dāng)變系數(shù)都是常數(shù)時(shí)ww黄片，該條件也是必要的精品人妖一区二区三区四区；同時(shí)影音先锋99日韩在线观看，根據(jù)該方程的"極限"方程建立了它自身的一個(gè)有界振動(dòng)準(zhǔn)則中文字幕色哟哟。

It simulates the human thought and the decision-making process, and solves the control difficult problem of complex system that describing is very difficult with the precise mathematical model (differential or difference equation).

基于知識(shí)驅(qū)動(dòng)的擬人智能控制系統(tǒng)涩涩视频入口，是一種模擬人類思維和決策過程AV狼友无码国产在线观看下载，解決難以用精確的數(shù)學(xué)模型來描述的復(fù)雜系統(tǒng)的控制難題的一種全新的控制系統(tǒng)欧美重a片视频。

This main approach is also coincidence degree theory. Moreover, when the time scale T is chosen as the sets of real or integer numbers, the existence of periodic solutions for its differential or difference equation are obtained respectively.

若分別選取時(shí)標(biāo)T為實(shí)數(shù)集或整數(shù)集時(shí)，則分別得到它的微分方程或差分方程周期解的存在性国产交换3p国产精品，這就避免了對(duì)這些生態(tài)系統(tǒng)的微分和差分方程周期解的存在性分別進(jìn)行討論。

According to the plane cross section assumption, configuration of a rod is expressed as a history of the cross section with arc coordinate. A special solution which stands for equilibrium in straight line state is obtained from differential equilibrium equation. Linear perturbation equation is derived and its general solution is obtained in which the integral constants are determined by constrained conditions at two ends of the rod. The condition of existence of non zero solution of the integral constants gives to the Greenhill formula of exact elastic rod model, which shows that the boundary of stable area is a closed curve and of symmetry, and inference of shearable and extensible to stability of the rod is depend on three factors: difference between flexibility of shear and extension of a section of the rod, bending stiffness and the length of the rod.

基于平面截面假定，彈性桿的位形表達(dá)為截面的弧坐標(biāo)歷程大桥未久黄色网站，根據(jù)平衡微分方程得到了兩端受力螺旋作用時(shí)的直線平衡特解自拍偷自拍亚洲精品偷一，導(dǎo)出了線性化擾動(dòng)方程及其通解久久精品国产72精品，積分常數(shù)根據(jù)兩端鉸支時(shí)的邊界條件確定，并根據(jù)其存在非零解的條件得到彈性直桿精確模型的Greenhill公式丝袜美女诱惑久久国产，表明穩(wěn)定域?yàn)橐粚?duì)稱的封閉區(qū)域亚洲字幕中文丝袜在线，拉/壓和剪切對(duì)穩(wěn)定性的影響取決于：拉/壓柔度與剪切柔度之差，抗彎剛度和桿長(zhǎng)這三個(gè)因素

The major implementations of the developed model include: Pseudo-spectral and finite-difference schemes are employed to approximate the spatial-differential operators in the horizontal and vertical directions, respectively. A second-order Runge-Kutta method is adopted to integrate in time for the velocity field and the free-surface elevation. The solenoidal condition of the velocity field is satisfied by solving the transformed pressure Poisson equation. A modified secant method is used to accelerate the iterative solution of the non-separable Poisson equation.

模式的主要數(shù)值方法包括：分別以擬頻譜法以及二階有限差分法近似控制方程與邊界條件中的水平與垂直導(dǎo)數(shù)；以二階Runge-Kutta法進(jìn)行非穩(wěn)態(tài)的自由液面位移與流場(chǎng)速度的時(shí)間積分18禁免费黄网站；利用改良式割線疊代法求解計(jì)算區(qū)間中不可分離的壓力Poisson方程式久久这里有视频，以滿足不可壓縮流條件国产日韩欧美高清在线播放视频。

In the method of numerical analysis, the spatial part of equation system in strong conservation form is first discretized by conventional central finite-difference approximation and then the system of partial differential equations becomes a system of ordinary difference equations.

本文所建數(shù)值方法的基本空間離散格式是中心差分，并用源于Jameson的標(biāo)量耗散模型抑制數(shù)值波動(dòng)91免费黄色视频；采用經(jīng)典四階龍格—庫(kù)塔法積分經(jīng)過空間離散后得到的常微分方程組當(dāng)殘差足夠小時(shí)的解為穩(wěn)態(tài)解。