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The "deadlock" problem is a logical problem which may occur in a system in which resources are shared among users. Deadlock is a situation in which two or more jobs cannot be completed because of conflicting resource requirements. In this paper we assume that advance information about future resource requirements of jobs is available. In particular, we assume that jobs are represented as...
The aim of this paper is not the establishment of new results, but the understanding, from a machine theoretic point of view, of results originally arrived at by algebraic means. A new criterion for series parallel irreducibility is given which makes no reference to underlying semigroups but involves only series parallel operations. Also, the irreducibility of prime counter machines is established...
Complex behavior by machines can be achieved by either having a large number of very simple machines or by having a complex machine with which to start. Our primary interest in this paper was with the former. By considering the global behavior of a large number of the simplest of machines, the following results were shown: 1. An array of identical square cells each of which can exist in only four...
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