Most attempts to quantify the effect of a separation are speculative.

For systems with inputs, one must quantify the effect of inputs on the stability of the system.

While he could not precisely quantify the effects of such heartbreak, he did suggest there was a way to alleviate it.

However, many erosion models were developed to quantify the effects of accelerated soil erosion i.e. soil erosion as influenced by human activity.

Attempts to quantify the effects of low-level exposure to perchlorate have met with resistance from environmental (and other) activists.