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信息时代的重要特征是信息的数字化。早期的信息用模拟方式表示,模拟 存在着明显的缺点:在信息的传输过程中会产生噪音和信号丢失;信息在 复制过程中其噪音和误差会逐步积累;模拟信号不适合数字计算机加工处 理。信号的数字化克服了上述缺点,但数字化后未经压缩的视频和音频等 媒体信息的数据量是非常大的
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We examine the patterns of media ownership in 97 countries around the world. We find that almost universally the largest media firms are owned by the government or by private families. Government ownership is more pervasive in broadcasting than in the printed media. Government ownership of the media is generally associated with less press freedom, fewer political and economic
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Washington & Lee Public Law and Legal Theory Research Paper Series Working Paper No. 01-03 November 2000 ENHANCING THE SPECTRUM: MEDIA POWER, DEMOCRACY, AND THE MARKETPLACE OF IDEAS
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(Harvard University and NBER) October 1, 2002 Abstract There are two di erent types of media bias. One bias, which we refer to as ideology, re ects a news outlet's desire to a ect reader opinions in a particular direction. The second bias, which we refer to as spin
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This work is distributed as a Discussion Paper by the STANFORD INSTITUTE FOR ECONOMIC POLICY RESEARCH SIEPR Discussion Paper No. 03- Confusing Success with Access: “Correctly” Measuring Concentration of Ownership and Control in Mass Media and Online Services
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Privatization and Self-Regulation as Tropes of Global Media Restructuring There is a power to language itself in affecting media reform around the world. The field of media regulation is filled with examples of strong ideas, encapsulated in words and phrases, that have an enormous impact on legislative transformation, and the export of which seems a characteristic of globalization. Just think of the ideology-laden tropes
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Regulatory Reform: The Telecommunications Act of 1996 and the FCC Media Ownership Rules by Bruce M. Owen May 2003 Prepared for the Fourth Annual
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1、广告发展概述(2课时) 2、广告螺旋(2课时) 3、广告管理(2课时) 4、广告调研(2课时) 5、广告媒体(8课时) 6、广告设计(12课时) 7、广告制作(2课时) 8、零售广告(2课时) 9、广告效益分析(2课时)
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在20世纪30年代的大萧条期间,美国政 府设立了许多社会资助项目的机构、 1937年改名的农业安全局(FSA),就是一 个在很大程度上因社会纪实摄影成名的 社会机构
文档格式:DOC 文档大小:38KB 文档页数:3
《多媒体技术基础》的内容参考了美国、加拿大和欧洲等著名大学有关多媒体课程的教 学大纲之后拟定的。本教材由下列四个部分组成:(1)多媒体的表示和计算(第2~13章,主 要介绍声音、图像和数字电视媒体的基本知识和编码方法。(2)多媒体的存储(第14~16章) 主要介绍CD和DVD存储器的存储原理和多媒体在存储器中的存放格式
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