They are finding them in bits and pieces -- good musicians without charisma, top ranges without bottoms and bottoms without tops, or beautiful sounds embedded in unacceptable coarseness.
Instead, the dolphins live in a society with a mosaic of many overlapping male and female ranges, without any apparent boundaries.
The advantages of this technology is that communication nodes can be inter-networked (within their radio transmission ranges) without the need of a pre-existing infrastructure.
Force sensors with these attributes will enable the mechanical properties of biological phenomena to be continuously measured over large F-D ranges without the need to change the measurement instrument.
From the analysis above, we conclude that a traffic-irrelevant channel assignment scheme which takes two types of traffic into consideration and gets interference ranges without using field measurement is still in need.
A striking example occurs in western North America where coevolution between crossbills and Rocky Mountain lodgepole pine (Pinus contorta latifolia) is ongoing in isolated ranges without the crossbill's dominant competitor for seeds, the red squirrel (Tamiasciurus hudsonicus).
