Efficiency Discounted Exponential Growth (EDEG) Approach to Modeling the   Power Progression of a Historical Dynasty
  Various approaches to model the progression of a dynasty in terms of power are discussed. The efficiency-discounted exponential growth (EDEG) approach is presented, and the effects of changing decay type and growth rate are demonstrated. The Russian Romanov dynasty is utilized as an example for several of the approaches. 
Mark P. A. Ciotola
physics.soc-ph