Per Scholas programs. Per Scholas brings more than 20 years of experience in recovering, handling and processing retired IT equipment. Per Scholas was featured in WIRED magazine in November 2014. Four Per Scholas graduates were featured in the New York Times in the winter of 2014. In 2012, Per Scholas was named one of America's top-performing nonprofit organizations by the Social Impact Exchange S&100 Index for its impressive outcomes and results-driven work. Per Scholas received a Heroes Award from the Robin Hood Foundation in 2011. The Per Scholas board of directors includes several prominent professionals in the IT field. Current Chairman Lewis
Per-unit system as base values; power and voltage are typically chosen. All quantities are specified as multiples of selected base values. For example, the base power might be the rated power of a transformer, or perhaps an arbitrarily selected power which makes power quantities in the system more convenient. The base voltage might be the nominal voltage of a bus. Different types of quantities are labeled with the same symbol (pu); it should be clear whether the quantity is a voltage, current, or other unit of measurement. There are several reasons for using a per-unit system: The per-unit system was developed to