Drills and safety nets

Safety Slicing Petri Nets

We define a safety slice as a subnet of a marked Petri net Σ that approximates Σ’s temporal behavior with respect to a set of interesting places Crit. This safety slice can be used to verify and falsify stutter-invariant linear-time safety properties when Crit is the set of places referred to by the safety property. By construction it is guaranteed that the safety slice’s state space is at most...

Income risk, coping strategies and safety nets

Poor rural and urban households in developing countries face substantial risks, which they handle with risk-management and risk-coping strategies, including self-insurance through savings and informal insurance mechanisms. Despite these mechanisms, however, vulnerability to poverty linked to risk remains high. This article reviews the literature on poor households’ use of risk-management and ri...

Europeanization and decentralization of welfare “safety nets”

NETS AND SEPARATED S-POSETS

Nets, useful topological tools, used to generalize certainconcepts that may only be general enough in the context of metricspaces. In this work we introduce this concept in an $S$-poset, aposet with an action of a posemigroup $S$ on it whichis a very useful structure in computer sciences and interestingfor mathematicians, and give the the concept of $S$-net. Using $S$-nets and itsconvergency we...

Safety Nets to Protect against Fatigue