数字水印技术在电子公文系统中的<br /> 研究与应用<br />
Journal Title: Science Paper Online - Year 2006, Vol 1, Issue 5
Abstract
电子图章是开发电子公文系统必须实现的技术之一。而电子图章作为一种数字图像，存在着容易被复制和盗用的安全性问题。本文通过将数字水印技术引入电子公文系统，从而解决了电子公文系统中电子图章的安全性问题。
Authors and Affiliations
Hongjie Jia, Jun Long
Keywords
Related Articles
- EP ID EP113074
- DOI -
- Views 91
- Downloads 0
键连在MCM-41哌啶萘酰亚胺的光化学性能
通过4-哌啶-1, 8-萘酐与氨基化MCM-41反应，在孔道中键连生成4-哌啶-1, 8-萘酰亚胺。红外光谱证明在介孔孔壁表面上确实生成了酰胺键。小角X射线衍射(XRD)显示掺入染料分子后，杂化介孔材料的衍射峰强度只有轻微下降。紫外可见光(UV-vis)漫...
Enterprise project management and analysis of <br /> its chaos characteristic<br />
The paper introduces enterprise project management, and analyses it in view of theory of chaos. Enterprise project management is a complicated system, it has the features of chaos and the reason for chaos introduced is u...
Study on transient characteristics of centrifugal pump<br /> during starting period<br />
In order to research the transient explicit performance and transient flow of the centrifugal pump during starting period, this paper introduces the transient performance test, the numerical simulation of transient flow...
A Study on Synthesis, Characterization and DNA-binding<br /> of Ruthenium(II) complex: [Ru(bpy)2(ipbh)](ClO4)2<br />
In this study, the DNA-binding of ruthenium(II) mixed-ligand complex containing 2,2'-bipyridine [Ru(bpy)2(ipbh)(ClO4)2 (bpy = 2,2'-bipyridine, ipbh =3-(1H-Imidazo[4,5-f][1,10]phenanthrolin2-yl)-1-benzodioxane) has been s...
一种基于先验知识的视网膜血管宽度测量方法
利用已获得的血管网络分割结果，提出了一种基于先验知识的视网膜血管宽度测量方法。该方法结合血管骨架的空间位置信息和方向信息，采用改进的定向局部对比度方法检测出骨架线两侧的血管边界像素，从而计算出骨架线上各像素点的血管直径宽...