We estimate with a branching process model the propa-gation of load shed and the probability distribution of loadshed in simulated blackouts of an electric power system.The average propagation of the simulated load shed datais estimated and then the initial load shed is discretized andpropagated with a Galton-Watson branching process modelof cascading failure to estimate...

Defining representative workloads, involving workload intensity and service calls within user sessions, is a core requirement for meaningful performance testing. This paper presents the approach for obtaining representative workload models from production systems that has been developed in the DynaMod project for model-driven software modernization.

in the current engineering practices, buildings are commonly designed for an effective lifetime of 50 years. this lifetime can increase the cost of buildings with short lifetimes and can reduce the safety level of buildings with large lifetimes. in this paper, a “service-life factor” has been defined. applying this factor into the nominal values of live, earthquake, wind, and snow loads, the ef...