Per Scholas of New York has an advisory board as well. Per Scholas Per Scholas is a United States nonprofit that provides tuition-free technology training to unemployed or underemployed adults for careers as IT professionals. Per Scholas was founded in 1995 by Lewis Miller and John Stookey in the South Bronx, New York City. Today Per Scholas provides solutions in six cities across the country: Atlanta, GA; Cincinnati and Columbus, OH; Dallas, TX; the National Capital Region, and New York, NY. To date, Per Scholas has trained 6,000 individuals. Per Scholas offers a free IT training and workforce development program. Per Scholas
Parts-per notation Since it is usually not stated which quantity is used, it is better to write the unit as kg/kg, mol/mol or m/m (even though they are all dimensionless). The difference is quite significant when dealing with gases and it is very important to specify which quantity is being used. For example, the conversion factor between a mass fraction of 1 ppb and a mole fraction of 1 ppb is about 4.7 for the greenhouse gas CFC-11 in air. For volume fraction, the suffix "V" or "v" is sometimes appended to the parts-per notation (e.g., ppmV, ppbv, pptv). Unfortunately, ppbv and