Wireless technologies often tend to increase convenience and decrease ‘safety’. Wired technologies are mostly used whenever reliability is of major importance. When an idea for some kind of new technology arises and the impact on the user can accurately be estimated the question ‘Can this technology improve life quality?’ should be the go/no go criterion. Knowing the advantages and disadvantages in advance should enable someone to answer this question.
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Technology has been the driving force to bring paradigm shifts in education. Big changes are not possible unless tools are available.
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The major shift over from the second-generation (2G) to third-generation (3G) wireless or 4G mobile was the ability to support advanced and wideband multimedia services, including email, file transfers, and distribution services such as radio, TV and software provisioning (software download) which are very important to open and distance learning system.
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User expectations are increasing with regards to a large variety of services and applications with different degrees of quality of services, which is related to delay, data rate and error bit requirements.
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