effect of small al additions, from 0.14% to 0.31% ai, on the hot deformation behavior of low carbon steels containing 1%cu-1.2%mn was investigated in the temperature range of 750-800•c over the strain rate range of 1o.3.1o.1s•1 by a hot compression testing machine. the flow curves obtained, exhibited typical characteristics of dynamic recovery type of softening mechanism, and the critical strai...

Tree-based overlay networks (TBŌNs) exploit the logarithmic scaling property of trees to provide scalable data multicast, gather, and aggregation services. We leverage the characteristics of many TBŌN computations to develop a new failure recovery model, state compensation. State compensation uses: (1) inherently redundant information from surviving processes to compensate for information lost ...

Intrusion-tolerant replication enables the construction of systems that tolerate a finite number of malicious faults. An arbitrary number of faults can be tolerated during system lifetime if faults are eliminated periodically by proactive recovery. The periodic rejuvenation of stateful replicas requires the transfer and validation of the replica state. This paper presents two novel efficient st...

We describe a new way, using database style recovery, to enable application programs to persist across system crashes. Previous eeorts have been based on frequent application checkpointing and/or the logging of application reads, both of which are very expensive. We include application state as a cached object and map application execution to loggable operations which t into the recovery framew...