查询词典 Dem.

The KEM scheme in the KEM+DEM paradigm is used to encapsulate the symmetric key for a multi-message hybrid encryption, IND-CCAs security is proved. An instantiation is presented to show the requirement of IND-CCA2 security for KEM is not essential.

4证明了KEM+DEM混合加密范例中的KEM用于多消息混合加密中，即KEM+SKE，是IND-CCA_S安全的，并用一个实例说明了此时对KEM要求IND-CCA2不是必要的。

The main results are as follow:(1) Systematically discussed the methods that built up the DEM by the contour line, we put forward new algorithms of auto-adding characteristic points that eliminated the "plane triangle" in constructing TIN and approximating important characteristic points by Lagrange interpolation polynomial.

主要成果有：(1)系统地论述了基于等高线建立DEM的方法，提出新的消除TIN构造中出现"平三角形"的算法——自动增加特征点和利用拉格朗日插值多项式拟合重要地形特征点，并验证算法对TIN结构的优化。

So, considering the character of deformation, a novel algorithm called LZD using differential model is proposed associated with least trimmed squares estimator, which is a robust estimator with high break-down point. It enhances the deformation detecting ability and matching accuracy when large deformed area exists in matched DEM.

因此，顾及地表变形的特点，结合高崩溃污染率的截尾最小二乘估计，提出基于差分模型的差异探测算法，进一步提高了在大面积变形情况下的DEM表面差异探测能力和匹配精度。

It couples the general limit equilibrium method and hydrological distribution model based on DEM, and can be used as a effective approach to predict the occurrence of landslide under different precipitation conditions as well as landslide mechanics research.

它将工程中广泛采用的滑坡极限平衡分析模型与基于DEM的水文分布模型有效地集成起来，旨在解决作为滑坡重要影响因素的降雨条件对滑坡发生、分布的影响机理及滑坡在不同降雨条件下的变形失稳定量预测的问题。

Using successive regression and GIS technique, the regression equations of the precipitation and the topographical data in the upper-middle reaches of Yangtze River are established based on the 10 years daily、 mensal and annual precipitation of 613 meteorological stations, from 1992 to 2001. The topographical data include the elevation, aspect and slope form DEM of 4km resolution.

本文首先利用逐步回归和地理信息技术，最新的长江中上游613个气象站，1992～2001年10年降水资料，建立了日、月、年降水与4km分辨率的DEM高程、坡向、坡度等地形数据的回归方程，将降水量中地形影响部分分离出来。

The interactions between gas and particles were considered by a two-way coupling method.The motion of particles in the spouted bed with complex geometry was solved by combining DEM and boundary element method.The minimal spoute...

通过采用BEM+DEM-CFD相结合的方法进行模拟计算，得到了喷动床的最小喷动速度，研究了不同表观气速下床内的流型，得到了二维导流管喷动床的床层压降与表观气速的关系，统计分析了喷射区、环隙区内颗粒的运动速度和相应的空隙率，全面地描述了二维导流管喷动床内的气固流动特征。

Field observation and analysis of the DEM of Western Sichuan Plateau indicate that, there are two planation surfaces and one erosion surface in Western Sichuan Plateau.

野外地质地貌调查和对川西高原DEM的分析结果表明，川西高原存在两级夷平面和一级剥蚀面。

First, generating a regular quadrangular mesh by means of DEM data. Then finding out the regions that railway beds locate in and cuting the regions into grids.

该方法首先利用DEM数据生成一个规则的四边形网格，找出路基所在的区域，将该区域离散到格中。

Some questions in digital elevation model were discussed detailedly, such as the obtaining of data points, the fast searching of reference points, the interpolation algorithm of quadric surface, the abnormal data eliminating, and so on. And this paper has realized the 3D vectorization of 2D terrain maps, the 3D display and edit of DEM data with the help of secondary development of CAD.

文中详细讨论了数字高程模型中数据点获得、参考点的快速搜索、二次曲面的插值算法、粗差剔除等内容，并运用AutoCAD二次开发技术，实现了二维地形图的三维矢量化以及DEM数据的三维显示和编辑修改。

The data-gain includes data collection, data pretreatment and the error treatment. The data structures of DEM have five kinds of structure, including dispersed point, regular network, triangle irregular network, counter and mixing structure.

数据获取包括数据采集、数据预处理与原始数据误差处理；DEM数据结构有离散点结构、规则格网结构、不规则三角网结构、等高线结构和混合结构五种。

Plunder melds and run with this jewel!

掠夺melds和运行与此宝石！

My dream is to be a crazy growing tree and extend at the edge between the city and the forest.

此刻，也许正是在通往天国的路上，我体验着这白色的晕旋。