1. Dosimetry attempts to factor in this effect with radiation weighting factors . 2. The string is then " weighted " using a repeating weighting factor pattern. 3. Where ? is constant weighting factor ( 0 d " ? < 1 ). 4. The radiation weighting factor for neutrons has been revised over time and remains controversial. 5. The resulting string of numbers is then multiplied by the weighting factor as follows: 6. Additionally, a weighting factor database was generated to help correct for previous inaccuracies. 7. These weighting factors have been revised twice, as shown in the chart above. 8. T ), each multiplied by its respective tissue weighting factor ( " W" 9. This means that we can consider homotopic equivalence class of paths to have different weighting factors . 10. Difficulty in finding the right weighting factors limits the application of the LQR based controller synthesis.