更差的

The main idea about it is that the messages passed on the bipartite graph of LDPC are based on the probability differences, and the renewal of both check nodes and message nodes is carried out on the special addition domain.

提出了一种新的基于差分的译码算法，其主要思想是：在LDPC码的二部图上所传递的消息是概率的差分值，而对于校验节点和消息节点的更新都是在特定的加法域中进行。

In order to get the numerical solution, the paper devises a three hierarchic implicit scheme which eliminates the strict restriction of explicit scheme, thus, it can be used in more areas. By using the energy estimation method, the convergence and stability of the difference scheme are proved and the scheme is second order convergence for time and space.

对求解方程构造了一个三层隐式差分格式，消除了显格式的稳定性对计算步长的严格限制，使之适用范围更广，并用能量估计的方法严格证明了差分格式的收敛性与稳定性，该格式对于时间和空间均具有二阶收敛性。

Another emphasis in this study is analyzing the effect of change in the variance, covariance and different elasticity.

除此之外，为了更清楚了解金融市场对最优权重的影响，本文重点分析了分配给两国货币权重大小的比较以及方差、协方差和各种资产需求弹性的变化所引起的最优权重的变化。

In the third chapter,the Lévy-Feller advection-dispersion equation describing anomalous diffusion,with asymmetric fractional derivative,is considered.

更多程不同的是，在三维情形中，分数阶导数的复杂性使得在构造差分格式时所添加的摄动项也非常复杂，由此所构造差分格式的理论分析也变得比较复杂。

Compared with simple point GPS, DGPS positioning scheme and plate-based integration navigation scheme, the system based on strap down inertial integration navigation scheme is more legerity and low-cost.

比起单点GPS定位，差分GPS定位和平台式惯导GPS组合导航方案，应用捷联惯导GPS组合方案的车载定位系统，更轻巧，更廉价。

To execute the differentiated marketing strategy much more effectively, stone enterprises should emphasize not only on the demand interests their target clients pursue in product sourcing, but also on the trend change of stone consumption. To keep a perdurable differentiated competition advantage, stone enterprises should constantly conclude and innovate.

为了有效实施差异化营销策略，石材企业不仅要着眼于目标客户采购产品时所追求的需求利益，更要洞察石材消费趋势的变化；为了保持差异化竞争优势的持久性，石材企业还要坚持不断总结和创新。

A new approach-two dimensional principal component analysis(2DPCA) is developed for face recognition. 2DPCA approach dont need to transform the image matrix into feature vector. It directly uses the image matrix to construct the sample covariance matrix.

5研究了二维主成分分析(2DPCA)方法，2DPCA方法不需要先将图像矩阵展开成一维向量，而是直接利用图像矩阵来构建样本协方差矩阵，所以2DPCA比PCA的识别时间更短，识别更高。

RESULTS: Fourth-order spherical aberration became more negative with accommodation, and the rate of this change was greater in older individuals.

结果：4阶球差随着调节变得更负，而且这种变化速率在年龄大的个体中更明显。

To improve the simulation accuracy and to make the increment of computation amount the smallest, the quantitative comparison was used to compare the effect of incident direction and difference accuracy on numerical dispersion with the changing of the ratio of horizontal and vertical gird. The results show that the rectangular grid is better than square mesh in suppressing dispersion and can avoid the low computational efficiency caused by high-order difference.

为提高模拟精度，同时又尽可能减少计算量，采用定量分析的方法，对比分析了横纵网格比变化时入射方向和差分精度等因素对数值频散的影响，分析结果表明，矩形网格较之正方形网格能更好地压制频散，同时可以避免高阶差分导致的低计算效率。

In recent years, Chongqing Urban Construction in full swing, everywhere is the modern terminals, bustling commercial streets, wide overpasses, viaducts and river bridges and air light rail, as well as garden-style residential area, to people who were unanimous in Chongqing to say, Chongqing has become even more beautiful, more stylish, and even temperament, and even more content, and with the old overcrowding, housing density, poor infrastructure, poor living conditions is quite different, but the old Chongqing Some typical symbols and signs are also gradually disappeared.

近年来，重庆市的城市建设如火如荼，到处都是现代化的码头、繁华的商业街道、宽阔的立交桥、高架桥及江上大桥和空中轻轨，以及花园式的住宅小区，来重庆市的人都不约而同地说，重庆变得更漂亮了，更时尚了，更有气质了，更有内涵了，与昔日的人口拥挤、房屋密集、基础设施落后、生活条件差等不可同日而语，但老重庆的一些典型的符号和标志也渐渐地消失了。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。