The non-convergence of nontrivial positive solution of the equations is proved by direct computation method.
考虑一类非线性时滞差分方程，用直接计算的方法，证明了它的所有非平凡正解都是发散。
This paper presents two fast algorithms of mass-spring model: quasi-static simulation and direct computation method.
介绍质量-弹簧模型的准静态模拟和直接计算两种快速算法。
A class of nonlinear delay difference equations is considered. The non-convergence of nontrivial positive solution of the equations is proved by direct computation method.
考虑一类非线性时滞差分方程，用直接计算的方法，证明了它的所有非平凡正解都是发散的。
The computation time of the method can be obviously reduced because of the higher computational efficiency of CC and FMM than that of direct summation.
由于循环卷积和FMM的计算效率明显高于直接求和，故整个算法的计算时间明显减少。
With this method, the reliability to direct the constraint graph is increased, the computation complexity is reduced, and the cyclic constraint graph can be solved expediently.
应用此方法，可提高约束图有向化的可靠性、降低计算复杂度，且能方便地求解带有循环约束的约束图。
The research states clearly that this kind of classification method possesses characteristics of simple computation, direct visualization and convenient processing by computers.
研究表明，这种分类方法具有计算简单、直观、便于计算机处理等特点。
The method requires less computation time and smaller memory than the direct computation of volume integral equations, since the large scale matrix inversion may be avoided.
由于不必进行直接的大型矩阵求逆运算，因而与体积分方程的直接解法相比，所需的机时更少，并减少了对内存的要求。
It is shown that the approximation method with sufficient accuracy costs less computation time than the direct integration method.
近似方法与直接积分方法的比较表明近似方法的计算工作量大幅减少，可以给出足够精度的计算结果。
The results show that this method is better than the direct algorithm in the computation and the principle, and the formula of the accuracy evaluation is derived.
对改进的算法与直接算法进行比较分析可得，作者所述的算法原理清晰、计算简便易行。
The results show that this method is better than the direct algorithm in the computation and the principle, and the formula of the accuracy evaluation is derived.
对改进的算法与直接算法进行比较分析可得，作者所述的算法原理清晰、计算简便易行。
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