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Over the last five years, there has been a shift from centralized to distributed computing. Timesharing and batch systems still have uses, but the large mainframe is no longer the only way to do computing. Networks have spread computing power, access, and costs beyond centralized computer centers. Personal computers have made computing accessible to many new users. Distributed computing attempts to bring the manageability of mainframe computing together with the accessibility of networked computing and the transparency of personal computing.
Quarlerman et al. (Fri,) studied this question.