数字数据

Based on DEM data of different development periods of a indoor watershed model obtained from the integration of artificial simulated rainfall experiment and high accuracy digital photogrammetry technique, the fractal dimensions of topographic feature under different development periods of the indoor watershed model based on variation method were calculated and the relationships between watershed topographic feature fractal dimension and topographic factors such as watershed gully density as well as ground lacerative degree was discussed preliminarily.

以室内流域模型人工模拟降雨试验和高精度摄影测量获得的模型流域不同发育时段的数字高程模型数据为基础，采用变分法计算了流域地貌形态分形维数，并对分形维数与地貌因子沟谷密度和地面割裂度的关系进行初步探讨。

This paper presents a new method of digital image sharing.Firstly,construct a reversible matrix,decompose a secret image into several scrambling and encryption images at one time by matrix operation,then camouflage them into several megascopic and meaningful carrier images to store or transfer.This algorithm combines the scrambling technique,encryption technique,information hiding and sharing technique,but with much simpler algorithm,less computation time,smaller pixel expansion,better recovery effect.The results show that the algorithm has application value in the field of secret image storage and transmission.

提出一种数字图像分存方法，首先构造可逆矩阵，并通过矩阵运算直接将秘密图像分解成几幅等大小的置乱加密图像，然后分别将它们伪装在几幅经过放大且有意义的载体图像中，实现了图像分存，文中将置乱加密、信息隐藏、分存技术三者有机结合，整个算法实现简单，运算量小，数据膨胀率低，安全性高，秘图恢复效果较好，大量实验也验证了算法的有效性。

XML Signature provides integrity, authentication and nonrepudiation services the same as the traditional digital signature.

XML签名和传统数字签名一样，可以提供数据完整性、身份认证、不可抵赖性等服务。

With the rapid development of computer communication network, people hope to implement rapid and long-distance communication by means of electronic apparatus. As a result, digital signature, which is widely used in society nowadays, comes into being and has been playing a very important role in thefields of information security, identity authentication, data integrity; nonrepudiation and anonymity, etc.

随着计算机通信网的迅速发展，人们希望通过电子设备实现快速、远距离的交流，数字签名应运而生，并已经在信息安全、身份认证、数据完整性、不可否认性和匿名性等方面发挥了重要作用。

It provides the data commuication with integrity, confidentiality, authenticity and nonrepudiation. Consequently, secure network communication can be ensured by identifying the two parties involved in the communication.

数字签名为数据提供完整性、匿名性、身份识别和认证、以及不可否认性等安全服务，保证了网络中通信双方信息的安全传输。

My calculation is based on notional figures,since the actual figures are not yet available.

因为没有真实数据，我的计算是建筑于虚拟数字之上的。

Besides,the characters and functions of the chips are also analyzed and depicted. The CPU is TMS320VC5409, the hardware is designed according to the function modules, these modules are power supply module、signal opsonic module、data processing module、time clock module、UART module and pulse output module.

系统的核心是数字信号处理器的TMS320VC5409，以模块化的设计方法将仪表的硬件按功能分为几大模块进行设计，分别为：电源模块、输入调理模块、数据处理模块、时钟模块、通信模块、脉冲输出模块。

The orthograph map is a new map which integrated by the remotely sensed image and the simplified topographic map, in the digital regional geological survey, the orthograph may be regarded the important information resources of geo-survey, the handy geo-maps of geo-workers outside and the geo-carriers of geological features.

正射遥感影像地图是遥感影像与简化地形图复合而成的一种新图，在数字区调中，正射遥感影像地图可以作为地质填图的数据采集的重要信息源、区调地质测量的野外工作手图以及区域地质等要素的载体。

With ERDAS IMAGINE 8.4 software,through rectification,digital orthographical maps inlaying,artificial color composition to Dian Zang railway by generating DEM and compounding with remote sensing image,the paper generates a three dimensional geomorphologic image and visible flight film by extracting information of geological engineering disasters and geological structure.

利用 ERDAS IMAGINE8.4版图像处理软件，对滇藏线原始数据经过校正、数字正射影像镶嵌、假彩色合成图像增强处理后，通过 DEM的获取、生成与遥感图像的配准，制作具有三维视感的地貌影像图及可视化飞行电影动画，提取工程地质灾害、地质构造信息，从工程地质角度对新建铁路滇藏线预可行性做出评价。

The main function of the system is to accomplish large and overelaborate statistics. Realizing way of statistics is to depend on a series of two-dimensional array,.

统计的实现方法是依靠在数据操作过程中形成的一系列二维矩陈，以二维矩陈为基础，迅速得到各种统计数字。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。