| 1. | Asymptotic stability of midpoint euler method for delay differential equations 时滞微分方程中点欧拉法的渐近稳定性 |
| 2. | 2 . relative dynamics equations of spacecraft and docking mechanism for each phase of the docking process are built by newton - euler method 2 .用牛顿-欧拉法分别建立了对接过程各阶段的相对动力学方程。 |
| 3. | Nonlinear electric field transient finite element equation is performed based on the backward euler method and the variational principle 摘要基于后退欧拉法和变分原理推导了非线性电场的暂态有限元方程。 |
| 4. | By valuing six american put options , the numerical experiment and analysis show that the euler method with fft is a fast and highly accurate numerical method 在数值实验中,对六个美式看跌期权价格进行了计算,通过分析比较,结果表明:快速傅里叶变换法加欧拉法是一种快速的高精度的数值计算方法。 |
| 5. | Methods a set of mixed parabolic - gradient nonlinear equations was established based upon the principles of the developing neural biology , which was computed by the adi scheme and the modified euler ' s method 方法根据神经发育原理,建立具有一定刚性的非线性混合抛物型偏微分方程组,运用adi差分格式和改进的欧拉法作数值分析。 |
| 6. | In this dissertation , the numerical simulation method of the solid phase field based on the lagrangian description and the gas phase field based on the eulerian description is first used in the numerical simulation research of the gas - solid injectors 首次将固相场基于拉格朗日法和气相场基于欧拉法的数值模拟方法引入气固喷射器的数值模拟研究工作中,建立了合适的三维数理模型。 |
| 7. | First , the jacobian matrix of the system is derived from a kinematics analysis . then the dynamic equations for each part are deduced using the newton - euler method . at last the driving forces of the active joints are calculated , by using the principle of d ’ a lembert 本文对6 - prrs并联机器人的动力学进行了分析,分别计算了各个构件的雅可比矩阵,得出了114阶的系统雅可比矩阵;然后利用牛顿-欧拉法详细推导了6 - prrs并联机器人的动力学方程,结合d ’ alembert原理求出了6个主动关节的驱动力。 |
| 8. | At the beginning of fourth chapter , the article transforms the solving problem of partial differential equation for the american put price into a standard initial and boundary value problem of parabolic type by making some transformations . afterwards , the solving problem of parabolic type is transformed into a initial value problem of ordinary differential equation with respect to through fourier transform again . at the last section of the fourth chapter , the article solves the initial value problem with the progressive euler method and the finite element method 在第四章,对美式看跌期权价格所满足的偏微分方程定解问题通过作一系列变换,使之转化为一个标准的抛物型初、边值问题,接着又通过傅里叶变换,把抛物型初、边值问题转换为一个关于时间变量的常微分方程初值问题,然后再分别利用改进的欧拉法和有限元法对其进行了求解。 |