数字

The criterion and extent of copyright infringement liability of DL, on the one hand, which affect directly not only the standard and quality of copyright protection, but also the existence and development of increasing internet industry, on the other hand, which is correlative with interests of innumerous users, hence copyright must delimit and define the liability of DL .

因此，版权保护法律在界定数字图书馆责任的同时，必须考虑对其责任加以必要的限制。文章第二部分主要论述了数字图书馆信息加工、信息组织和信息传播中的知识产权问题。信息资源建设是中国数字图书馆工程的基础和核心，丰富的信息资源是数字图书馆健康发展的前提与保障。

In this paper, the principles and methods of digital image rectification based on digital photogrammetrical mapping system and the overlay of rectified stereo images with raster data or vector map data are described. Further more, under the platform of digital photogrammetrical system, the quick updating of 3D stereo digital relief map is realized.

本文论述了基于数字摄影测量系统的数字影像几何纠正的原理与方法，以及利用纠正后的立体影像和栅格或矢量地形图数据叠加，在数字摄影测量系统下，实现三维立体数字地形图快速修测。

While trying to get a grasp of the septile aspect, I went back to John Addey (1920 1982), a key voice in bringing Pythagorean understanding of numbers into modern astrology. He wrote Harmonics in Astrology in 1976; it is now back in print after many years. He writes that the number seven (and the 7th harmonic)"is a difficult number to pin down" and "somewhat elusive to interpret."

为了试图给7分相位一个浅显的解释，我找到了历史上的一位占星家，名叫 John Addey ，将毕达哥拉斯对数字的理解带进了现代占星学，他1976年出版了一本《占星中的数字和谐》，书中有关数字7和7分相位，他写道&它是一个很难确定，很难下结论的数字&并且&不太容易解释和捉摸&。

Those products can be used in various kinds of digital Television headend systems and HFC networks, and we also provide the operators with integrated solutions.

公司产品包括数字电视前端设备、数字电视测试设备和有线电视网络设备等系列，适用于各种数字电视前端系统和有线电视网络的建设，为运营商提供数字电视、手机电视和有线电视解决方案。

The main products include GB20600 digital terrestrial TV Network equipment, DVB digital TV headend equipment, MPEG TS transmission equipment and digital TV STB, etc.

主要产品包括国标地面数字电视组网设备、DVB数字电视前端设备、MPEG TS传输设备和数字电视机顶盒等，并提供最佳数字电视行业解决方案。

Bei Kenda Technology is a leading interactive digital TV headend overall value-added business solutions provider, the company products are widely involved in interactive digital television platform, digital TV value-added services, high-definition digital TV broadcast and home entertainment solutions in areas such as information .

贝肯达科技是领先的互动数字电视增值业务头端整体解决方案供应商，公司产品广泛涉及互动数字电视平台、数字电视增值业务、高清数字电视播出及家庭娱乐信息解决方案等领域。

DVB-S (Digital Video Broadcasting by Satellite) modulator is one of the digital headend devices compatible with DVB-S standards, which can be extensively applied to satellite-specific digital video broadcasting and related services.

DVB-S(Digital Video Broadcasting by Satellite)调制器是符合DVB-S协议的数字电视前端设备之一，也满足我国数字电视卫星广播标准，该设备可以广泛应用于数字电视卫星业务和相关数字电视业务。

For preparing for the researches of text digital watermarking and advantaging other researchers" development when using the Chinese mathematical expression theory, this paper designs and realizes a development platform of Chinese mathematical expression. It has been proved by experiments that the platform"s function, execution speed and stability can satisfy the requirements of conversion and operation of enormous data.This research found out that the structure information of Chinese have plenty redundant information that can be used by the Chinese mathematical expression for the digital watermarking, the data embedded can possess better robustness. Based on this finding, this paper designs a kind of text digital watermarking method of embedding watermarking by using Chinese structure, and realizes the method by using the Chinese mathematical expression platform.Considering the watermarking embedding algorithms importance to the robustness of the text digital watermarking, this paper makes fully use of the advantage of the Chinese mathematical expression theory to design a kind of layered text method, which has being realized by using the Chinese mathematical expression platform. The layered text method can handle the text as a solid structure, and the embedding data havepreferable robustness.Finally, based on the researches of the text digital watermarking method and the text layered method, this paper integrates the method of making use of the Chinese structure embedding watermarking with the robust algorithm based on text layered, and realizes a brand-new text digital watermarking method. Proved by lots of experiments, this brand-new method has good robustness and better invisibility.

为了为研究工作做准备和方便其他使用汉字数学表达式理论体系的人进行开发，本文基于汉字数学表达式理论设计实现了一个汉字数学表达式平台，实现了Unicode汉字集中的汉字、汉字数学表达式、汉字的Unicode码之间的相互转化、依据汉字数学表达式提取汉字的结构信息、由汉字数学表达式在非中文平台上不依赖字库显示汉字的图像等功能，使用复合文档技术和流压缩技术进行数据的存储，使用对汉字数学表达式进行二叉树拆分来处理汉字数学表达式中包含的信息，使用自定义哈希函数来提高运行速度，实验证明，该平台功能、速度和稳定性完全能满足大量数据的转化和运算要求；通过研究表明汉字的结构信息中存在大量可使用汉字数学表达式理论加以利用的水印加载空间，加载在该空间的数据可以具有较好的鲁棒性，基于此，本文设计了一种利用汉字结构加载水印的文本数字水印方法，并使用汉字数学表达式平台将其实现；由于水印嵌入算法对于文本数字水印的鲁棒性至关重要，本文充分利用汉字数学表达式理论的优点，设计了一种文本分层的方法，并使用汉字数学表达式平台将其实现，使文本成为一个立体的空间，使嵌入在其中的数据具有更好的鲁棒性；最后在基于汉字数学表达式的文本数字水印嵌入方法的研究和基于汉字数学表达式的文本分层方法的研究的基础上，结合利用汉字结构嵌入水印的方法和基于文本分层的抗攻击文本水印嵌入算法实现了一种全新的文本数字水印方法，经实验证明，该方法有良好的鲁棒性和较好的隐蔽性。

With the development of computer and network technology, there are more and more applications of digital contents which are easy to be copied, modified and spread. Because of these features, the digital contents are also always under the risk to be filched, juggled, accessed without authorization and illegally distributed. The digital contents can hardly be protected effectively in the network environment due to its large-scale disordered distribution, which has hindered the development of the applications based on the digital contents.

随着计算机技术和网络技术的发展，具有易复制、易修改和易传播特征的数字内容的各种应用蓬勃兴起，但这些特性同时是一把双刃剑，使得数字内容在其生命周期内随时面临被窃取、篡改、非授权访问和非授权分发的威胁，造成数字内容价值的降低甚而丧失，这直接或间接地制约着各种数字内容应用的发展。

Vised and control by arithmetic figure the new function that many arithmetic figures that replace traditional technique parties' living supervise and control the test that experience the fulfillment.

安防产业在中国作为一个相对新兴的产业，可以说在其迅速扩展式发展的二十一世纪初便深深打上了数字化的烙印，作为安防产业的核心，闭路监控更是首当其冲，2000和2001年的硬盘录像机的飞速发展就是对数字监控的一个市场性的反映，由于数字监控正处于一种过渡阶段，由数字监控取代传统技术派生出的许多数字监控的新功能正经历实践的考验。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了