These include, amongst others: female gender [ 6- 9], Caucasian race [ 10- 12], biomechanical factors such as foot structure and flexibility [ 1, 7, 11], previous history of injury, high running mileage, high amount of weekly exercise [ 3, 4, 13- 17], tobacco use [ 7, 11, 18, 19] and low levels of physical fitness and activity [ 3, 7, 10, 14, 20- 24].
The two hypotheses are not presented as alternative or mutually exclusive explanations of brain evolution, and the debate, even among their proponents, has mostly centered on the relative importance of developmental constraints versus adaptive flexibility [ 1, 2, 14].
Furthermore, in power systems with large shares of intermittent renewable generation, NGFPPs become one of the swing resources used to provide flexibility [1].
Organic solar cells [OSCs] have attracted attention due to their unique advantages, such as easy processing, low cost of fabrication of large-area cells, and mechanical flexibility [1].
Graphene is a novel two-dimensional material with remarkable mechanical and electrical properties, such as high carrier-mobility and outstanding mechanical flexibility [1].
In these hybrid structures, the graphene (or graphite) could function as a device electrode owing to its excellent optical transparency, electrical conductivity and flexibility [1].
White organic light-emitting diodes (WOLEDs) have been aggressively explored for display and solid-state lighting applications because of their excellent characteristics such as high efficiency, low power consumption, fast switching, and flexibility [1, 2, 3, 4, 5].
Perovskite solar cells (PSCs) have been demonstrated to be next-generation photovoltaic devices that meet future energy-generation demands owing to their high power conversion efficiency (PCE), low cost, simple solution-based preparation, lightweight, and flexibility [1, 2, 3, 4, 5, 6].
More networked organizations for additional flexibility 3.
Consequently, smart grids are open to "interpretative flexibility" [5].
