This leads to exponential shapes of mitigation floors: the marginal effectiveness of mitigation is decreasing with time.
When the risk is decreasing with time, the expected recurrence time will lead to the divergence of return period and make this definition inapplicable for engineering purposes.
Spirals do seem to be more common at large distances (that is, well in the past), implying that their numbers are decreasing with time, presumably the result of repeated collisions.
Moreover, the flocs break up due to polymer degradation was introduced in the model by decreasing, with time, the maximum collision efficiency factor.
The relative humidity response rate accelerated speedily with the incremental load damage, varying rapidly at first, but then assumed a steadier rate, decreasing with time.
There was an increase in social (P = 0.09) and locomotor play (P = 0.03) as well as synchronous resting (P < 0.001) with subsequent days after mixing, suggesting that the stress by being mixed with an unfamiliar conspecific is decreasing with time.
Generally, the trends of instantaneous corrosion rates in terms of 1/Rp, decreasing with time and increasing with chloride contents, roughly correspond with the general corrosion trends in Fig. 6., and it also compensated the incapability of general corrosion rates to detect the in-situ corrosion transformation.
The difference is due to a rather subtle fact: Even though the universe is "accelerating" in the sense that each galaxy moves faster as time goes on, the Hubble constant is actually decreasing with time -- in other words, the rate at which space is expanding, measured at a point which is at a fixed distance from us, gets smaller as time goes on.
Dating and topographic surveying of paleo-dunes (43 53 ka), paleo-marine terraces (17 30 ka), and paleo-marine shorelines (3.3 5.5 ka) document a rapid, > 1 mm/a subsidence, followed by a 6 mm/a uplift that is decreasing with time.
where α(t) is a learning parameter decreasing with time.
