PR Firms and their Mission Looking at how public relations practitioners advertise their services, they do not primarily seem to be followers of the "social engineering" approach. Burson-Marsteller, the worlds leading PR agency, for example sells itself as a specialist in "... public affairs, government relations, crisis communication, investor relations, environmental issues and marketing communications ... experienced at orchestrating effective campaigns, which motivate the right behaviors.". Porter Novelli, third largest international PR company, somewhat more aggressive promises, that their marketing-based public relations "... penetrate the consumer psyche - where - your target audiences work, learn, play or shop, through everything they read, hear and see.". While Porter Novelli seems to be specialized in psychological warfare, Fleishman-Hillard highlights its know-how and experience in government relations programs. "We have handled some of the nation's most challenging public policy issues, including issues affecting the environment, from clean air to agricultural chemicals; aviation safety; regressive taxes; international trade; and human rights.". To handle those difficult tasks, Fleishman-Hillard maintains "... an effective, professional lobbying team that includes registered lobbyists recruited from the Senate and the House."

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Bandwidth The bandwidth of a transmitted communications signal is a measure of the range of frequencies the signal occupies. The term is also used in reference to the frequency-response characteristics of a communications receiving system. All transmitted signals, whether analog or digital, have a certain bandwidth. The same is true of receiving systems. Generally speaking, bandwidth is directly proportional to the amount of data transmitted or received per unit time. In a qualitative sense, bandwidth is proportional to the complexity of the data for a given level of system performance. For example, it takes more bandwidth to download a photograph in one second than it takes to download a page of text in one second. Large sound files, computer programs, and animated videos require still more bandwidth for acceptable system performance. Virtual reality (VR) and full-length three-dimensional audio/visual presentations require the most bandwidth of all. In digital systems, bandwidth is data speed in bits per second (bps). Source: Whatis.com

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