| 1. | A characteristic mixed method with dynamic finite - element space for nonlinear convection - dominated diffusion problems 非线性对流扩散问题的动态网格特征混合元方法 |
| 2. | Heaven say who you were aliens get into a time element space , arrived at the map of red spots before we leave 天意弄人,你被外星人弄进了一个次元空间中,到达地图的红点才能离开。 |
| 3. | Introduction : heaven say who you were aliens get into a time element space , arrived at the map of red spots before we leave 天意弄人,你被外星人弄进了一个次元空间中,到达地图的红点才能离开。 |
| 4. | The formula for computing the recommended element spacing to obtain an even temperature gradient on the product being heated is shown in figure 4 通过间距计算公式得知加热产物温度梯度,具体详见图4 。 |
| 5. | A g / l - s finite element discrete form is proposed . the discrete solution is stable for any combination of finite element spaces 并建立了方程的g / l - s有限元离散格式,相应地证明了有限元离散解的存在唯一性。 |
| 6. | Then we come to the nonlinear advection - dominated transport problem , only the one - dimensional case is discussed . it is shown that the unknown c and the adjoint p are optimally approximated when it is discretized with the lowest order mixed finite element space 扩散项均为非线性的情形,对一维问题采用零次混合元空间进行离散,得到了l ~ 2范数意义下关于c , p的最优误差估计。 |
| 7. | The galerkin / petrov - least squares - type mixed finite element method and the nonlinear galerkin / petrov - least squares mixed element method so that they are stable for any combination of discrete finite element spaces without requiring the babuska - brezzi stability condition Galerkin / petrov最小二乘混合元法和非线性galerkin / petrov最小二乘混合元法使得有限元空间之间的组合无需满足离散的babuka - brezzi稳定性条件,从而使得它们的有限元空间可以任意选择。 |
| 8. | Analyze the linear dipole array with uniform element spacing using the method of moments ( mom ) , derive the analytical expression for the recovered signal with the direct data domain method , demonstrate the effect of the mutual coupling on the performance of the antenna array by examples , the degradation of the system caused by the mutual coupling is simulated and analyzed in two different electromagnetic environments such as the weak and strong interference 用矩量法计算了几个信号同时照射时对称阵子均匀直线阵的电流分布,用直接数据域算法推导了此接收阵列的恢复期望信号的表达式,举例说明了互耦对阵列天线性能的影响,数值模拟了在弱干扰和强干扰下,互耦造成系统性能下降的情况并分析了原因。 |
| 9. | Lake - experiment for an un - baffled practical circular array verified the effectiveness and error tolerance of this new method . 5 . the intrinsic mechanism of optimal array gains is studied for the scenario when the element spacing is less than one half - wavelength , with emphasis on un - baffled circular arrays 针对一个24元均匀分布圆阵的湖上实验结果表明,这种新的恒定束宽波束形成方法是有效的,且在一般条件下,对基阵阵元幅度和相位响应误差具有良好的宽容性。 |
| 10. | Computer simulation results show that the beamspace wsf algorithm retains the super performance of its element space counterpart when applied to the beam outputs of some practical acoustic - receiving array . 3 . an improved form of classical time domain broadband beamforming is proposed by combining digital delay lines and fir filters 提出了对经典时域宽带波束形成器的改进方法,采用数字延迟线和fir数字滤波器结合的方式实现时域波束形成,以消除波束畸变并实时实现结构特殊的空间频率响应。 |