Editorial

This issue is in a way a kind conglomerate of approaches and ideas, when it is as its best. From a geological perspective, a conglomerate is a rock, which consists of individual objects that stands out, and of matter that act as an almost cement-like texture, holding these objects together. This matter – made of finer grains – stems from the individual objects. Likewise, as a conglomerate the individual articles in this issue raises specific issues, and at the same time, the theoretical approaches are like fine grain that binds the individual studies together.