Usability testing is the measurement of ease of use of a product or piece of software. In contrast, usability engineering (UE) is the research and design process that ensures a product with good usability. Usability is a non-functional requirement.
I think in modern world you can associate with only one thing, but it's not the best choice. Bulgarians speak Slavic language as mother tongue, but also many of us speak a Germanic language (English). We have always been part of the Mediterranean world and are pred.Pontid in race, a Med subtype. think in modern world you can associate with only one thing, but it's not the best choice. Bulgarians speak Slavic language as mother tongue, but also many of us speak a Germanic language (English). We have always been part of the Mediterranean world and are pred.
The currency for Bulgaria is the Bulgarian Lev (BGN). It is expect that Bulgaria will change their currency to the Euro in 2015. The Lev is pegged to the Euro at a rate of 1.95583 Leva = 1 Euro. Three Lev currency editions were introduced prior to the current Bulgarian Lev (BGN). The symbol for the Bulgarian Lev is Ð»Ð².