Whereas the general positive relationship between abundance and occupancy shown by Macroben assemblages was similar to that found in many other systems, this relationship was weak, and the sign and strength varied among taxonomic groups and regions within the European domain [74].
In randomly-packed chain systems this relationship is expected to be lost, as is observed when the corona region of the micellar networks (i.e. the disorganized parts of the chains protruding into the solvent) is also included in the calculations (data not shown).
In capitation based systems, this relationship is much weaker, since the annual capitation fee per patient is fixed.
Vitamin D has a potential role in slowing HIV disease progression and preventing mortality based on its extensive involvement in the immune system; however, this relationship has not been examined in large studies or in resource-limited settings.
Consistent with this prediction, we observed a relationship between elevated WMH volume and failures to modulate activity in attentional control systems, although this relationship was present only among older adults with high levels of WMHs.
Using this system, the relationship between the sensor output parameters and environmental variation was quantified.
The three most important systems responsible for this relationship are: the optic system (sight), the proprioceptive system, and the labyrinthine system.
These findings also highlight the need to consider the genetics of the glutathione peroxidase system when examining this relationship, as variation in the GPX1 gene is related to depression risk and significantly influences the protective impact of selenium, which is indicative of a gene-environment interaction.
In the centimetre-gram-second (cgs) system the relationship is: D = E + 4πP.
In a nonlinear system, the relationship between the control parameters and the behaviour of the system is more complex.
