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.
1 Vaya (the Burgas) lake â the largest natural lake in Bulgaria. 2  It is located to the west of Burgas. 3  The water is 4-11% salty. 4  Fresh water comes from 3 rivers and the neighboring Mandrensko lake that is turned to dam.he city of Burgas developed after the beginning of the 20th century and most of the buildings in the city centre date from this time. The city Gallery of Fine Arts is hosted by a secession style synagogue.