the hypothesis of positive duration dependence at the beginning of the transition and slightly negative thereafter … shortening the transition. Originality: Despite the duration of the STWT is one of the most important indicators to measure the …-linear duration dependence. Furthermore, they extend the analysis by including student-workers who attended a vocational path of …

performance, in particular when the innovative effort is continuous. This paper aims to further the analysis on the duration of R … view of R&D duration within the European countries. Secondly, from a methodological point of view, we employ both discrete …- and continuous-time duration models, in order to test the Proportional Hazards (PH) assumption, i.e. the assumption that …