Researched and devised by Oliphant Jackson[?], MRCVS, the Jackson Ratio is a method of determining whether a tortoise, or a member of another chelonia species, is maintaining its optimum bodyweight, which is necessary for a successful hibernation
... may be restricted by the copyright holder. The context is most commonly digital (ie, as in a computer or computerized device), hence the 'digital' in DRM. In contrast to ...