Third, high-speed operation makes it possible to improve error control: currently, a destination IMP returns an RFNM after transmitting the first packet of a multipacket message to the destination host. If an error occurs during the transmission of the (up to seven) other packets into the destination host, the source host will not be informed of the error: it has already been given a positive m...

This paper describes a packet network simulator whose timing granularity can shift continuously from ne, packet-level detail to coarse, conversation-level detail. Simulation run time decreases with coarser timing granularity, but the details in the underlying model become faded as the timing granularity coarsens. The ner the gran-ularity, the slower but more precise the simulation. If a simulat...

Informally, a language L has speedup if, for any Turing machine (TM) for L, there exists one that is better. Blum [1] showed that there are computable languages that have almost-everywhere speedup. These languages were unnatural in that they were constructed for the sole purpose of having such speedup. We identify an intuitive condition which, like several others in the literature, implies that...

Numerous code optimisation methods are usually experimented by doing multiple observations of the initial and the optimised executions times in order to declare a speedup. Even with fixed input and execution environment, programs executions times vary in general. So hence different kinds of speedups may be reported: the speedup of the average execution time, the speedup of the minimal execution...

By combining carrier-envelope phase (CEP) stable light fields and the traditional method of optical pump-probe spectroscopy we study electron localization in dissociating H2(+) molecular ions. Localization and localizability of electrons is observed to strongly depend on the time delay between the two CEP-stable laser pulses with a characteristic periodicity corresponding to the oscillating mol...