数位

Besides, this research reveals the power of bundling between digital and paper publishing could remove the possible damage of cannibalization. At last, we propose empirical digital publishing strategies of to the new entrants and the incumbents.

同时，本研究发现纸版与网路数位版的绑售威力，可避免新旧产品线之间的掠夺效果；并在实务意涵上，对新进的数位出版厂商，或既存的传统出版商，提出数位发行的行销策略。

The project will develop a bandpass sigma-delta analog-to-digital converter for digital audio broadcasting system in three years. In the first year, we had finished the system simulation for IF receiver using conventional high speed ADC and bandpass sigma-delta ADC, respectively. We also had done the analysis and design of high-order bandpass sigma-delta modulator structure. In this year, we have developed a coefficient synthesis method for high order bandpass sigma-delta modulator using high order filter transfer functions (inverse Chebyshev bandreject filter function).

本计划将在三年内发展一个能应用在数位音讯广播系统的带通sigma-delta类比/数位转换器(analog-to-digital converter，ADC)，在第一年度中我们分别以传统高速类比/数位转换器及带通SD类比/数位转换器的接收系统为例，并结合编码正交多工器(Coded Orthogonal Frequency Division Multiplex，COFDM)的技术，建立一套DAB系统模拟的方法，同时并研究有关高阶带通SD类比/数位调变器的架构及电路，并已成功开发出一个由高阶滤波器合成的高阶带通调变器。

Check digit: An extra digit calculated automatically from other digits in a data item and used to check its accuracy .

校验数位：在一数据项目中的额外数位，它自动加上于其他数位中运算，以核对该数据的准确性。

Check digit : An extra digit calculated automatically from other digit s in a data item and used to check its accuracy.

校验数位：在一数据项目中的额外数位，它自动加上于其他数位中运算，以核对该数据的准确性。

In this thesis, the major study is the design of a switched-current Analog-to-Digital Converter. Both the delta-sigma modulator and the decimator will be discussed separately.

中文摘要本论文主要是在研究切换电流式三角积分类比数位转换器的设计，可将其分为类比的三角积分调变器以及数位的降频数位滤波器两部分个别讨论。

E-Learning becomes more important to companies, government and common people due to the development in information technology. They use e-Learning not only for training employees but also for acquiring common knowledge. However, planless development in e-Learning introduces some problems. For example, in public sectors, there are many similar platforms and courses, which makes part of investment become a waste and unnecessary.

数位学习随著资讯科技的发展及普及渐渐受到政府及产业的重视，不管是企业内部的教育训练、一般民众或是公务员的再进修，采用数位学习的比例都不断提高，然而，没有经过整体规划的发展却会带来一些问题，像是企业可能必须面对内部多个分散的数位学习资源，台湾的公部门数位学习网站也因为没有经过整体规划造成各单位独自发展，产生许多重复的课程以及目标、功能类似的平台，造成资源浪费。

In this paper, we have proposed a flexible encryption blocks selection buyer-seller watermarking protocol integrated the RSA asymmetric encryption system and homomorphism mechanism to protect the ownership of digital contents and fit real life. And consider the secondhand transaction in the real life. We also propose a buyer-reseller watermarking protocol based on the flexible encrypt blocks selection buyer-seller watermarking protocol to offer a solution of secondhand transaction. In our scheme, it's more light data transport requirement than other schemes. All roles in protocol will benefit by their participation. Our scheme can overcome various of the known attacks and security problems in the buyer-seller watermark protocol, such as buyer's right problem, unbinding problem, piracy tracing problem, conspiracy problem, buyer's participation in the dispute resolution problem, man-in-the-middle attack problem and anonymous problem. Furthermore, the seller and arbiter can verify the buyer's watermark without decrypting it in our scheme.

本文除应用RSA非对称式加密与秘密同态机制，提出了一个符合现实生活中买卖交易行为、可弹性调整加密范围数位内容买卖浮水印协定，强化了目前研究中对於数位内容买-卖浮水印协定的安全性，并进一步的考量二手商品交易行为，在可弹性调整加密范围数位内容买卖浮水印协定基础上，提出一个结合数位内容二手买卖与盗版追踪的二手数位内容买卖浮水印协定，达到让参予买卖的角色可以在安全的情形下完成二手数位内容所有权的移转并从中获取相对应利益的目标的数位内容转卖浮水印协定来增强了目前数位内容买卖浮水印协定研究中对於二手交易欠缺之处，解决了数位内容买卖浮水印协定中所可能遭遇的重要安全性议题，如：买方权益、盗版追踪、资讯不连结、共谋、买方需要参与仲裁、中间者攻击及匿名性问题。

However, there is a potential that some segments in an eDocument may be overrated by the PageRank analysis. In this work, two potential reasons, which cause the overrating problem, are identified:(1) Some eDocuments are difficult to cause memory difficulty or selective reading and (2) A reading activity can be treated as a traversed thread over an eDocument.

然而PageRank演算法却有可能高估数位文章片段的重要性而导致摘要的准确度降低，在研究中两个主要造成高估数位文章片段问题的可能性首先被指出来：一、某些数位文章不容易造成记忆上的困难或选择性阅读；二、阅读活动可以被视为一条往返於数位文章上的线。

The ladder digital company created the "hastened the ripening" in the e-learning industry and development, and ripens the 4th year creation crisis. In the whole process, what we may see is not only Taiwan's e-learning industry and digital-content industry, but also the opportunity and challenge of Taiwan's knowledge-based industry.

阶梯在数位学习产业发展的阶梯数位学习产业创新「催熟」，以及催熟第四年的创业危机，整个过程可看到的，不但是台湾数位学习产业、数位内容产业的创业个案经验，同时，台湾知识型产业的机会与挑战，也在此浮现。

Proposed DSP engine consists of rectangular to polar converter and digital phase modulator that are designed based on the COordinate Rational DIgital Computer and Direct Digital Frequency Synthesizer algorithm respectively.

所提出来的数位讯号处理引擎包含了座标转换器和数位相位调变器，两者分别是利用数位座标旋转器以及数位频率合成器来实现。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。