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The numerical examples of linear and nonlinear vibration demonstrate that barycentric Lagrange interpolation collocation method have advantages of simple formulations, easier to program and higher computational accuracy.

线性和非线性振动问题的数值算例表明，重心Lagrange插值配点法具有公式简单、数值实施方便和计算精度高的优点。

First, basing on point halving, this thesis proposed a new efficient algorithm of computing kP lQ on an elliptic curve over the finite field with characteristic 2 and analyzed the computational efficiency. When the ratio I/M of inversion to multiplication cost is small, this new algorithm is about 5%～30% faster than the traditional algorithms.

首先，基于半点运算给出一种计算特征为2的有限域上椭圆曲线双标量乘法kP lQ的新算法并分析了效率，当基域上求乘法与求逆的运算时间的比值比较小时，新算法的效率比已有算法提高5％～30％。

According to the hydrology principle and the ecology systematics principle,we put forward the computational method of ecological and environmental water demand in river basion from eight aspects.

水是生态环境的控制性要素，水资源的不合理开发、利用和管理导致了严重的生态环境问题。

However, most of the current wireless networks still work in low bandwidths, and mobile devices still suffer from weak computational power, short batt

但目前许多通信设备终端还无法进行像图像序列编解码这样高复杂度的计算，也无法显示传统解码后的24位真彩色视频，更致命的是传输带宽往往也无法提供高质量的流媒体传输服务。为此，本论文在传统H.26x和MPEG-x等视频编解码技

The computational load of approximating the Bayes solution is lightened greatly by taking advantage of Markov chain Monte Carlo method.

同时，本文提出的方法还具有软输入软输出的特点，可以方便的与纠错编码相结合进一步提高接收机检测性能。

Comparing with the bidimensional extension Shamir′s secret sharing based scheme, the proposed scheme not only reduces computational and communication loads, it is also more reliable.

与基于Shamir秘密共享的二次扩展的方案相比，该方案不仅减少了计算负载和通信负载，而且增加了可靠性。

Because the derivation of the extended system has a block lower triangular form, the method of splitting iteration is applied to compute simple bifurcation point, not only computational work is reduced, but also local quadratic convergence is achieved.

由于所构造的扩充系统的导数具有分块下三角形式，采用分块迭代的方法进行数值求解，不仅减少了计算量，而且是二次收敛的，从而为Navier-Stokes方程非退化简单分歧点的数值逼近提供了有效的算法。

Based on linear bending theory of thin elastic plate and fundamental solution constructed with the general solution principle of biharmonic equation, a meshless method was developed for establishing a computational format of numerical solution of thin plate bending.

基于弹性薄板的线性弯曲理论和重调和方程的一般解理论构造的基本解，建立无网格法求解薄板弯曲问题的数值计算格式。

Center for Computational and Systems Biology, Institute of Biophysics, Chinese Academy of Sciences, Beijing 100101, China

中国科学院生物物理研究所，计算与系统生物学中心，北京100101

A novel node positioning algorithm, called IMP-HCRL, is proposed, which adopts three improvements, including the strategy based on wireless transmission range, the strategy based on bisector point and the strategy based on isodynamic point, to overcome the drawbacks at computational complexity and localization accuracy of HCRL with low communication overhead simultaneously.

分析了HCRL定位算法的原理和过程，在继承了HCRL低系统通信开销优点的基础上，针对其在计算复杂度和定位精度方面的不足，应用了3种改进策略－基于节点无线射程的改进策略、基于等比点的改进策略和基于等力点的改进策略，提出了改进的IMP-HCRL算法。

I hope that this success is just the first in a long series.

我希望这只是成功的开始。

Three dimensional stresses on the interface of tire and soil, tire deflection and soil sinkage are measured.

测试轮胎——沙土界面上的三向应力、轮胎变形和沙土沉陷；建立考虑剪切应力对沙土承载特性产生影响的车轮牵引性能预测模型；分析车轮作用下土壤的纵向稳定性。