The sign of the numerator for each derivative is unknown, since both terms of the determinants are positive.
Through the integration of economies of scale into general equilibrium models, Krugman furthered understanding of both the determinants of trade and the location of production in an increasingly globalized post-World War II economy.
These models allow for consistent estimation of both the determinants of true criminal activity and the determinants of reporting behaviour by only using the information of observed self-reported crime.
Given that some parametric conditions hold, these models allowed for consistent estimation of both the determinants of true criminal activity and the determinants of underreporting, using only data on observed reported crime.
This conclusion is generally consistent both with an ecological understanding of the determinants of child health and with international experience [ 35].
However, the impaired walking capacity is most likely both the cause and the consequence of the determinants found.
Inclusion of both outcomes improves understanding of the determinants of breast density, and their influence on the results.
Secondly, it offers new evidence that advances our understanding of rural poverty, by presenting quantitative analyses of the determinants both of rural activities and of income from farm- and non-farm sources drawing on data from FAO's Rural Income Generating Activities (RIGA) data base of 15 countries, complemented by demographic, health, production and income data from other sources.
Development of strategies to improve young children's diets is likely to be more successful if underpinned by an understanding of the determinants of both healthy and unhealthy food intake.
