Many software reliability growth models assume that the time to next failure may be infinite; i.e., there is a chance that no failure will occur at all. For most software products this is too good to be true even after the testing phase. Moreover, if a non-zero probability is assigned to an...

Most software reliability growth models specify the expected number of failures experienced as a function of testing effort or calendar time. However, there are approaches to model the development of intermediate factors driving failure occurrences. This paper starts out with presenting a model...

Für die Käufer von Sammelbildern stellt sich häufig die Frage, wie viele Käufe sie tätigen müssen, um eine bestimmte Anzahl von Bildern, die zu Gruppen in Tüten verpackt sind, zu erhalten. Zur Lösung dieser und ähnlicher Fragen untersuchen wir Verallgemeinerungen des Belegungsproblems...

A number of recent studies have reported the phenomenon of “software aging”, characterized by progressive performance degradation and/or an increased occurrence rate of hang/crash failures of a software system due to the exhaustion of operating system resources or the accumulation of errors....

Keynes (1911) derived general forms of probability density functions for which the "most probable value" is given by the arithmetic mean, the geometric mean, the harmonic mean, or the median. His approach was based on indirect (i.e., posterior) distributions and used a constant prior...

In Pleier und Mangold (2013) wurde ein Pilotprojekt zur Verbesserung des Lernverhaltens untersucht, welches im Wintersemester 2012/2013 durchgeführt wurde. Studierende sollten dabei semesterbegleitend an Online-Tests teilnehmen, um sich frühzeitig auf die abschließende Klausur vorzubereiten....