Figure 2From: Estimation of exposure to toxic releases using spatial interaction modelingExample graph of the distance decay functions. Example graph of the four distance decay functions examined in this study: a buffer, Cutter's quadratic decay function, a power-based decay function, and an exponential decay function. All functions use 1.0 for α, 2.0 for θ, and 100 for T, with a release volume of 10,000.Back to article page