Whether those findings should be interpreted as period effects (i.e. events that have taken place between 1997 and 2007) or cohort effects (i.e. due to historical differences of different cohorts) cannot be inferred from the present empirical analysis.
Tajik Persian of Central Asia is here characterized in comparison with Standard Persian, from the standpoint of historical divergence and differences in phonology, derivational and compositional morphology, and syntax.
Lucas et al. (2015), on the other hand, showed that the communities of three established energy crop digesters had similar community profiles in spite of some "historical" differences, while different community structures were found in other reactors included in their study.
For example, introduction attempts of non-native species to a focal region may vary according to geographic origin due to historical differences in rates of trade and travel between regions [19].
The physical manifestation of these historical differences can be seen in the strips, flags and songs of both clubs.
We can only take steps and start this work by asking the hard question of why historical differences in both opportunity and misfortune have left us such a disparity in access to opportunity for all.
Based on the degree of re-epithelization, granulation tissue formation, and collagen organization, a five-tiered grading system was adopted to evaluate the historical differences of different samples, as showed in Table 2[ 19, 20].
The point here is that while it's fascinating to look at these transnational differences, it really leads into a dense thicket, not only of cultural and historical differences, but of complex themes and sub-themes.
