As soon as trade barriers are differentiated by country, and the principle of non-discrimination is not fully adhered to, imported products must be assigned to a country to determine which duties and quotas apply.The difficulty is acute for PTAs where members have different external tariffs.
Provide a politically differentiated (i.e., country-by-country) assessment of the carbon sink over the last three decades.
The result is a health care system more complex and differentiated than those of countries at either extreme (high-income countries: no verminous diseases and better labour conditions; low-income countries: lower incidence of degenerative diseases).
Four decades later, political differences between the two main political parties, the Socialist Party (PS) and the Social Democratic Party PSDD), have yet to produce any differentiated impact on the country's public finances and economic performance.
The sample is based on three different groups of Swedes, differentiated by the parental country of birth, born in 1990: (a) all individuals with at least one parent born in Iran, (b) 50percentt of all individuals with at least one parent born in the former Yugoslavia, and (c) a simple random sample of 2500 individuals with two Swedish born parents.
Peri and Requena (2010) focus on trade for Spanish provinces, 1995-2008, finding that immigration significantly raises trade – particularly for differentiated goods and for countries culturally distant from Spain.
Whereas former research has repeatedly shown that the effect of social class origin on the educational performance of native pupils is larger in countries with differentiated educational systems (see e.g. Dupriez et al., 2008; Duru-Bellat and Suchaut, 2005; Pfeffer, 2008; and Schütz, Ursprung, and Wössmann,2005), we find the opposite pattern for migrant pupils.
This approach could also be an ideal vehicle for implementing the principle of common but differentiated responsibilities, since member countries would not need to be lumped together into rigid tiers of commitment (as they are under the dichotomous Annex I approach of the Kyoto Protocol).
We have also seen that the levels of investment have resulted in differentiated levels of coverage across countries and within countries across different age and income groups.
One reason this is so difficult is the dispute over the concept of "common but differentiated responsibility" – which means each country's action reflecting its historical contributions to raising cumulative levels of greenhouse gases, and also its wealth.
