For regions where f ''(x) is positive, the function is concave up; where f ''(x) is negative the function is concave down. So, looking at the graph of f '(x), wherever slope is positive, you've got a positive second derivative and the function is concave up.
U-Meleni was a part of a group of Artists conducting workshops on spoken word and creative writing showing how it can be used to empower and create change. U-Meleni then travelled to ZIMBABWE for three weeks ( Aug 13-Sept 2, 2006) to spend time with family and friends.
Melaina (The Black One) is the under-earth or chthonic aspect of the Greek Great Goddess, said to bring nightmares. Different Goddesses are called by Her name. Aphrodite Melainis represents a dark aspect of the Goddess of love as underworld Deity, though some say She is called Black because love-making often takes place at night.