The human immunodeficiency virus (HIV) is a lentivirus (a subgroup of retrovirus) that causes HIV infection and acquired immunodeficiency syndrome (AIDS).AIDS is a condition in humans in which progressive failure of the immune system allows life-threatening opportunistic infections and cancers to thrive.he human immunodeficiency virus (HIV) is a lentivirus (a subgroup of retrovirus) that causes HIV infection and acquired immunodeficiency syndrome (AIDS).
The definition of optimal is the most favorable. An example of optimal used as an adjective is in the phrase optimal score, which means the highest score someone can get on a game. most favorable or desirable; best; optimum. Origin of optimal.
Goals should be SMART - specific, measurable, agreed upon, realistic and time-based. A goal might be to hold a weekly project meeting with the key members of your team or to organise and run a continuous test programme throughout the project. The acronym SMART has several slightly different variations, which can be used to provide a more comprehensive definition of goal setting: