The National Research Council (2002) associates the indicators of self-management (self-control, perseverance, stress management and goal-setting) with personal and social assets that facilitate positive youth development in the area of psychological and emotional development.
A Petabyte is approximately 1,000 Terabytes or one million Gigabytes. It's hard to visualize what a Petabyte could hold. 1 Petabyte could hold approximately 20 million 4-door filing cabinets full of text. It could hold 500 billion pages of standard printed text.
Terabyte or TB. One terabyte (TB) is about 1000 gigabytes, or roughly 1 trillion bytes. You can buy 1 TB and 2 TB hard drives today, so we are just beginning the time when this term comes in to common use. Gigabyte used to be a rare term too, until Moore's law made it common.