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.
This article is about the Bulgarians. For the early medieval people, see Bulgars. For other uses, see Bulgarians (disambiguation). The Bulgarians (Bulgarian: Ð±ÑÐ»Ð³Ð°ÑÐ¸, BÇlgari, IPA: [bÉ¤ÌÉ«É¡Éri]) are a South Slavic ethnic group who are native to Bulgaria and neighbouring regions.