Current techniques for the verification of software as eg model checking are limited when it
comes to the verification of complex distributed embedded real-time systems. Our approach …

Abstract The textual Object Constraint Language (OCL) is primarily intended to specify
restrictions over UML class diagrams, in particular class invariants, operation pre-, and …

A new tunnel tube crossing the river Elbe has been built in Hamburg until the end of 2002.
Therefore, a new height control system was required. A computer examines the signals from …

Kurzfassung Diese Arbeit integriert die Sicherheitsanalysetechnik Fehlerbaumanalyse (FTA)
aus dem Bereich der Ingenieurwissenschaften in formale Methoden aus dem Bereich der …

Safety is increasingly important for software based, critical systems. Fault tree analysis (FTA)
is a safety technique from engineering, developed for analyzing and assessing system …

With the third most biodiverse amphibian fauna in the world, Ecuador has bolstered this
claim with a particularly high rate of species descriptions in recent years. Many of the …

This article presents a UML profile for an OCL extension that enables modelers to specify
behavioral, state-oriented real-time constraints in OCL. In order to perform a seamless …

We present a semantics for fault tree analysis, a technique used for the analysis of safety
critical systems, in the real-time interval logic Duration Calculus with Liveness and show …

We describe OBDD-based symbolic model checking algorithms for simply-timed systems, ie
finite state graphs where transitions carry a duration. These durations can be arbitrary …

Many approaches such as component technologies have been invented in order to support
software reuse. Based on these technologies a large variety of techniques have been …