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Abstract—The rapid technological convergence between Inter-

In some ways this chapter could be seen as redundant in a HCI book Ð surely networks are just an implementation mechanism, a detail below the surface, all that matters are the interfaces that are built on them. On the other hand, networked interfaces, especially the web, but increasingly also

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ly, the remote procedure call problem, which an RPC protocol undertakes to solve, consists of emulating LPC using message passing. LPC has a number of "properties" -- a single procedure invocation results in exactly one execution of the procedure body, the result returned is reliably delivered to the invoker, and exceptions are raised if (and only if) an error occurs. Given a completely reliable communication environment, which never loses, duplicates, or reorders messages, and given client and server processes that never fail, RPC would be trivial to solve. The sender would merely package the invocation into one or more messages, and transmit these to the server. The server would unpack the data into local variables, perform the desired operation, and send back the result (or an indication of any exception that occurred) in a reply message. The challenge, then, is created by failures. Were it not for the possibility of process and machine crashes, an RPC protocol capable of overcomi...

Road safety, traffic management, and driver convenience continue to improve, in large part thanks to appropriate usage of information technology. But this evolution has deep implications for security and privacy, which the research community has overlooked so far.

A penetrating analysis of our technical civilization and of the effect of an increasingly standardized culture on the future of man

This report was prepared by an officially appointed advisory panel to the National Science Foundation, however, any opinions, findings, and conclusions or recommendations expressed in this material are those of the panel and do not necessarily reflect the

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