查询词典 differential method
- 与 differential method 相关的网络例句 [注:此内容来源于网络,仅供参考]
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The main contents include: Setting up a theoretic vibration decreasing model of ERSFD and deriving its differential equation; Analyzing and comparing the features of ERSFD, SFD and Porous Squeeze Film Damper , and finding out that SFD and PSFD are the special examples of ERSFD; Giving an over-relaxation differential algorithm for the solution of the oil film force of ERSFD; Deriving the differential equations of the elastic ring deformation with and without tension and solution method.
给出了求解ERSFD油膜力的超松驰差分迭代格式和算法。
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On the fuzzy number valued mapping F:〓→〓, we put forward the definitions ofdirectional derivative, differential, gradient and subdifferential, and with the "cut method" byusing respectively the directional derivative and differential of two crisp functions that aredetermined by F, characterize the directional derivative and differential of F.
对于模糊映射F:〓→〓,提出了方向导数,微分,梯度及次微分的概念,并通过取截集,用由F所完全确定的通常函数的方向导数和微分分别刻划F的方向导数和微分。
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The traffic momentum differential equation and Euler's equation for the ramp junction is founded by means of differential calculus in this paper,the traffic momentum differential coupled equation is solved by characteristic curve method,two groups of characteristic curves and corresponding related equation in high speedstates and low speedstates are presented.
采用特征线法对运动微分方程组进行分析求解,在高速低密度区和低速高密度区分别得到了两组特征线和对应的特征关系式。
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The total differential cross section, elastic differential cross section and inelastic differential cross section for collision between He isotopic atoms and NO molecule have been calculated by using close-coupling approximation method.
汪荣凯 贵州师范大学理学院,贵阳 550001沈光先贵州师范大学理学院,贵阳 550001;四川大学原子与分子物理研究所,成都 610065宋晓书贵州师范大学理学院,贵阳 550001;四川大学原子与分子物理研究所,成都 610065
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In the case of simply supported ends, the Galerkin method is used to simplify the integro-partial-differential equation into an integro -differential equation. The equation is further simplified into a set of ordinary differential equations by introducing an additional variable. Finally, the numerical methods in modern nonlinear dynamics such as phase plane trajectory, power spectrum and Lyapunov exponents are adopted to investigate the dynamical behavior of the beam.
对于两端简支的情形,采用Galerkin方法简化为常微分-积分方程;然后通过引进附加变量的方法进一步简化为常微分方程;最后利用相平面图、功率谱和Lyapunov指数等非线性动力学中的数值方法识别梁的动力学行为。
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The main contents include: Some preliminary theory (introduction to Sobolev spaces and variational formulations for differential equations); finite element methods for one-dimensional elliptic problems; the construction methods for general finite elements; error estimates for interpolation operators and inverse inequalities for finite element spaces; a priori and a posteriori error estimates for the finite element method for high-dimensional elliptic problems; some typical spectral methods for partial differential equations; error analysis for the spectral approximation for some linear and nonlinear partial differential equations.
主要内容有:准备知识(Sobolev空间的基本概念和主要结果,微分方程的变分描述);一维椭圆型方程有限元方法;一般有限元的构造;插值算子误差估计和逆不等式;高维椭圆型方程的先验、后验误差估计;求解偏微分方程的几类谱方法;线性与非线性问题谱逼近的误差分析等。
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By means of the qualitative theory and method of delay differential equations, the weak conditions for the bound-edness of the system are obtained. By use of differential mean value theorem and computational techniques on delay differential equations, we show that the system is globally asymptotically stable under condition for the boundedness.
用时滞泛函微分方程的定性理论得到了系统有界的较弱的条件,并运用微分中值定理及有关时滞微分方程的计算技巧,我们获得了在系统有界这样弱的条件下就能保证系统全局渐近稳定的结论。
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The question of searching characteristic points or straight lines on moving rigid body is decomposed into two relatively independent sub-questions. The first one is to evaluate the characteristic of points and straight lines on moving rigid body, whose mathematics model is a kind of special non-differential max-mini optimal problem with inequality constraints. By the method of Saddle-point Programming and maximum entropy, the problem can be transformed as a differential optimal problem with single objective. The second oner is to search approximative character points or straight lines on moving rigid body within design space, whose mathematic model is nonlinear and non-differential problem with multiple constraints.
本文将在运动刚体上寻找特征点或直线的优化问题分解为两个相对独立的子问题,一是对运动刚体上点或直线的特征性评定,其实质是平面曲线的圆度或直线度的评定问题,优化模型是以最大误差为最小作为优化目标的约束不可微的优化问题,本文采用鞍点规划和极大熵方法,将其转化为单目标可微优化模型;二是在设计空间内,寻找运动刚体上特征性评定指标最小的近似特征点或直线,其优化模型是非线性、多约束的不可微优化问题,本文提出用遗传算法和BFGS局部搜索法相结合来求解。
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Therefore, basic methodologies for stochastic seismic and filtering responses of nonlinear structure are studied, the approximate solution methodologies and their practical applications are investigated in the dissertation employing equivalent linearization and moment equations method based on FPK equations and Ito stochastic differential equations. The research works are mainly concerned with the following aspects:Firstly, the differential expression of bilinear hysteretic is studied and a new differential expression is developed, then they are demonstrated.
因此,本文基于FPK方程和伊藤随机微分方程,研究了滞后结构物的随机地震反应和随机滤波问题的基本方法,并利用等效线性化法和矩方程法,研究了非线性结构随机地震反应分析和随机滤波分析的近似解法及它们的工程应用。
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To get more factors associated with erythropoiesis in K562 cells, modified differential display reverse transcription polymerase chain reaction method was applied to identify genes with differential expression in uninduced and hemin-induced K562 cells. Remarkable differential ESTs were firstly selected for cloning, sequencing and analyzed with bioinformatics methods.
为了进一步获得分化过程中相关基因表达的信息,我们应用改良的差异显示RT-PCR技术,分析K562细胞在Hemin诱导的红系分化前后的基因表达变化,获得红系分化相关基因的线索,进而确定在红系分化中起重要作用的基因,并研究它们的作用机制。
- 推荐网络例句
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As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.
每逢看到沃林顿那刚毅的脸,那乌黑、忧郁的眼睛,她便会相信,他一定作过不幸的爱情的受害者。
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Maybe they'll disappear into a pothole.
也许他们将在壶穴里消失
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But because of its youthful corporate culture—most people are hustled out of the door in their mid-40s—it had no one to send.
但是因为该公司年轻的企业文化——大多数员工在40来岁的时候都被请出公司——一时间没有好的人选。