When filter questions are asked to determine respondent eligibility for follow-up items, they are administered either interleafed (follow-up items immediately after the relevant filter) or grouped (follow-up items after multiple filters). Experiments with mental health items have found the...

Grundlage für die Erstellung amtlicher Statistiken sind häufig Daten aus Stichprobenerhebungen. Um eine ausreichende Ergebnisqualität bei gleichzeitig möglichst geringer Belastung der Auskunftspflichtigen sicherzustellen, ist dabei die Stichprobenplanung von zentraler Bedeutung. Während bei...

Grundlage für die Erstellung amtlicher Statistiken sind häufig Daten aus Stichprobenerhebungen. Um eine ausreichende Ergebnisqualität bei gleichzeitig möglichst geringer Belastung der Auskunftspflichtigen sicherzustellen, ist dabei die Stichprobenplanung von zentraler Bedeutung. Während bei...

This paper deals with a system where batch arrivals wait in a station until a server (a train) is available, at which moment it services all customers in waiting. This is an example of a bulk server, which has many applications in public transportation, telecommunications, computer resource...

Observing revealing criteria regarding the difficulties faced by economic entities show a great diversity of situations and exceptions that occur both at the level of “bankrupt” firms and of those viable. In economic theory, interest exists to develop methods for bankruptcy risk prediction...

We study the links between the likelihood-ratio (LR) gradient-estimation technique (sometimes called the score-function (SF) method), and infinitesimal perturbation analysis (IPA). We show how IPA can be viewed as a (degenerate) special case of the LR and SF techniques by selecting an...