W analyze the optimal strategy of a high-quality incumbent that faces a low-quality ad-sponsored competitor. In addition to competing through adjustments of tactical variables such as price or the number of ads a product carries, we allow the incumbent to consider changes in its business model. We consider four alternative business models: a subscription-based model; an ad-sponsored model; a mi...

The purpose of the research presented in this paper has been to characterize flexibility in lean mixed model assembly lines through exploring mechanisms used to achieve flexibility. The study combines a literature review and a multiple case study in two manufacturing companies. Scenarios of volume, mix and operation flexibility, as well as flexibility to introduce or remove products were studie...

We describe the form of the linear mixed-effects and generalized linear mixed-effects models fit by lmer and give details of the representation and the computational techniques used to fit such models. These techniques are illustrated on several examples.

Applications of composite links and exploded likelihoods for generalized linear latent and mixed models are explored.

In this paper the effect of posibilistic or mixed background risk on the level of optimal prevention is studied. In the framework of five purely possibilistic or mixed models, necessary and sufficient conditions are found such that the level of optimal saving decreases or increases as a result of the actions of various types of background risk. This way our results complete those obtained by Co...

This paper investigates calling melodies produced by 21 Standard German native speakers on a discourse completion task across two contexts: (i) routine context—calling a child from afar to come in for dinner; (ii) urgent context—calling a child from afar for a chastising. The intent of this investigation is to bring attention to other calling melodies found in German beside the vocative chant a...