This is Robert C. Miner's DT Oscillator, a version of the Stochastics & RSI.
See his book, High Probability Trading Strategies
There are four possible parameter combinations for this indicator:
8,5,3,3 Monthly,Weekly,Daily
13,8,5,5 Weekly,Daily,H4
21,13,8,8 Daily,H4,H1
34,21,13,13 H4,H1,M15
