“…Interestingly, Fronczak et al (2007) concluded that the degree of the scientific productivity of researchers at different generations for a given seniority remains approximately the same. Cheng and Chen (2007) analyzed the scientific productivity of Year 2006 of chemical engineering professionals in Taiwan with information retrieved from the database of the ISI Web of Science. Cheng and Chen (2007) noted that the distribution between the number of authors from chemical engineering professionals with x publications, N(x), in Year 2006 could be fit well with N(x) = 1320x À2.22 .…”