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- The Bethe ansatz equations are obtained from the periodic boundary conditions. 由周期边界条件推出贝特假设方程。
- The linear elements are employed to discrete the boundaries. Kutta condition is a direct combination of the boundary element equation. It can also handle the period boundary condition solving the problem on B-to-B surfaces of revolution by means of BEM. 本文介绍用边界元法计算不可压缩回转面流场,并给出了S_1流面上的运动方程,采用线性单元对边界进行离散化,将库塔条件与边界元方程直接联立求解,并且较好地解决了用边界元法解回转面时所遇到的周期性边界问题。
- The monotone iterative techniques is used to investigate the existence of extremal solution of periodic boundary value problems (PBVP) for neutral delay differential equation. 摘要利用单调迭代方法给出了中立型滞后微分方程的周期边值问题极解的存在性定理。
- In this paper, by using the fixed point index method, the authors discussed the periodic boundary value problem of first order differential systems. 摘要利用锥上的不动点指数研究了一阶非线性常微分方程组的周期边值问题。
- The aim of present paper is to extend the q-boson hopping model from the periodic boundary condition to the integrable open boundary condition. 在进一步的工作中通过已求得的系统哈密顿量和相应的本征态,我们得到了系统的能谱,由此可以计算出一系列的可观测量。
- The monotone iterative techniques is used to investigate the existence of extremal solution of periodic boundary value problems(PBVP) for neutral delay differential equation. 利用单调迭代方法给出了中立型滞后微分方程的周期边值问题极解的存在性定理。
- As an application, we precisely expressed the expantion theorem and the eigenvalue s trace identity of the Sturm-Liouville problem under periodic boundary condition. 作为应用,给出了与此问题相关的特征展开定理及特征值的迹公式的精确表述。
- Based on the asymptotic homogenization, the periodic boundary conditions for the unit cell of composites are established using the ANSYS parametric design. 在渐近均匀化方法的基础上,用ANSYS参数设计语言建立了周期性边界条件,用ANSYS有限元程序对单胞进行求解,得到了复合材料的有效性能。
- The eigenproblems of spin waves in a homogeneous ferromagnetic bilayered system with periodic boundary conditions are solved by using the improved interface-rescaling approach. 采用改进的界面重参数方法,讨论了周期边界条件下同质双层铁磁膜中自旋波本征激发问题。
- Applying upper and lower solution method, we investigate the existence of solutions of a class of periodic boundary value problems for impulsive differential equations with piecewise constant argument. 利用上下解方法,研究了一类具逐段常数变元的脉冲微分方程的周期边值问题的解的存在性。
- The existence theorem of a class of periodic boundary value problems for first order nonlinear integrodifferential equations is obtained through the method of lower and upper solutions. 研究了一类纯量形式非线性积分微分方程周期边值问题,利用上下解法证明了解的存在性。
- Secondly, the analysis of the retro-diffraction in an EDG is given by using a Finite-Difference Time-Domain (FDTD) method combined with perfectly matched layers (PML) and a periodic boundary condition. 利用时域有限差分法对光栅的后向衍射效率进行了分析,比较了全内反射(TIR)光栅结构和普通光栅在后向衍射效率上的差别,及其适用范围。
- In this paper, we mainly use variational methods, including the least action principle, minimax theorem and Morse theory, to deal with the existence of solutions of discrete Hamiltonian systems with periodic boundary value conditions. This Ph. 我们利用变分理论中的最小作用原理、极小极大原理,以及Morse理论研究了离散哈密尔顿系统的周期边值问题。
- Magnetohydrodynamics equations with periodic boundary conditions are considered in this note.The time analyticity of the solutions for the equations is proved and the backward uniqueness is obtained. 摘要考查了周期边界条件下的磁流体方程,证明了它的解关于时间是解析的,由此得到了磁流体方程的解的向后惟一性。
- That period was a bright page in the history of Chinese literature. 那个时期是中国文学史上光辉的一页。
- Based on the cellular automaton (CA) made up of regular hexagon cells, the nearest neighbor type and periodic boundary condition, equiaxial microstructure as parent phase was obtained. 摘要文章采用正六边形网格划分法、最近邻邻居关系以及周期性边界条件的元胞自动机方法,获得等轴的母相微观组织。
- Let us hope that the period of this injustice will be over soon. 让我们希望这个不公正的时期很快结束吧。
- Cone,monotone iterative technique,measure of noncompactness,extremal solutions,periodic boundary value problems,impulsive integro-differential equations of mixed type,initial value problems. 锥,单调迭代方法,非紧性测度,极值解,周朔边值问题,混合型脉冲徽分-积分方程,初值问题
- Childhood is a period of rapid growth. 幼年是生长迅速的时期。
- He consulted the chronicles of the period. 他参考了这一时期的编年史。
- 今日热词
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- 深远海浮式风电平台 - deep-sea floating wind power platform
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- 京雄高速公路 - Beijing-Xiongan expressway
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- 农业及相关产业增加值 - the added value of agriculture and related industries