AD FS 2.0 is a downloadable Windows Server 2008 update that is the successor to AD FS 1.0, which was first delivered in Windows Server 2003 R2, and AD FS 1.1, which was made available as a server role in Windows Server 2008 and Windows Server 2008 R2.
Baseline FHR Variability. Baseline variability is defined as fluctuations in the fetal heart rate of more than 2 cycles per minute. No distinction is made between short-term variability (or beat-to-beat variability or R-R wave period differences in the electrocardiogram) and long-term variability.
DEFINITION of 'Portfolio Variance'. The measurement of how the actual returns of a group of securities making up a portfolio fluctuate. Portfolio variance looks at the standard deviation of each security in the portfolio as well as how those individual securities correlate with the others in the portfolio. In other words, portfolio variance looks at the covariance or correlation coefficient for the securities in the portfolio. Generally, the lower the correlation between securities in a portfolio, the lower the portfolio variance.