One of the tenets of modern physics is that, at the quantum or fundamental level, the universe is "uncertain." Time is also deemed uncertain, although this is considered trivial because our equations cause the uncertainty to resolve into a single value.

I'd like to suggest that this uncertainty in time is not at all trivial, but is the manifestation of a quantum-level oscillation between the "micro past" and the "micro future." What's more, I suggest that this oscillation is not symmetrical. In other words, the "micro future" segment is always slightly greater than the "micro past" segment. It is this "imbalance" which keeps our "normal" time flow moving "forward" into the future. 

In other words, what we call the present (or "now") is not a moving point in time, but a moving average time... the net result, if you like, of the quantum oscillation between a micro past and a (slightly more emphasized) micro future. 

The precise amount by which the "future" oscillation exceeds the "past" is a function of our velocity... or, as I put it earlier, our "net" velocity. 

What we may have here, then, is a way of determining, not only an exact figure for the degree of time expansion we normally experience but, by calculating the precise rate of the quantum oscillations in time, a way of using micro changes in our net velocity to create a kind of "resonance" with that oscillation. This resonance could be employed to expand the amplitude of oscillation until it becomes, first, observable and then, ultimately, useful. 

For example, if the current net forward movement through time could be neutralized, we'd have a bubble of time stasis. Similarly, it should be possible to create bubbles in which time flows backward, and bubbles in which it moves forward more quickly than "normal."