In this paper, we consider a semi-online preemptive scheduling problem on two uniform machines, where we assume that all jobs have sizes between p and rp for some p 0 and r ≥ 1. The goal is to maximize the continuous period of time (starting from time zero) when both machines are busy. We...

This study aims at testing the theoretical issue according to which multinomial logit (MNL) would give lower performance than a mixed multinomial logit (MMNL) in the presence of heterogeneity. To do so, we construct two samples of patients surveyed within the same regions in rural China, but of...

We estimate the evolution of healthcare demand under the influence of income growth and population aging with two samples of patients surveyed in the same regions, but with an interval of 18 years in rural China and with mixed logit to deal with heterogeneity. In accordance with theoretical and...