However, even Amazon has an averaging strategy that is used to smooth
results over a time span.
Not exact matches
When remuneration packages are tied into the performance of shares
over a very short
time -
span, the long - term
result is often a weaker corporate sector.
When the authors looked at seasonal trends
over the same
time period, the most notable expansion of the Sahara occurred in summer,
resulting in a nearly 16 percent increase in the desert's average seasonal area
over the 93 - year
span covered by the study.
Results:
Over time scales
spanning at least a decade, the amount of sunlight that reaches the Earth's surface has varied.
The
results of the largest coffee study to date were recently published in the New England Journal of Medicine involving more than 400,000 U.S. men and women ages 50 to 71,
over a 14 year
span of
time.
While capital gains can prove fickle, particularly
over short
spans of
time, dividend growth is driven as a direct
result of business prospects...
When the researchers repeated the analysis
over both six - month and 36 - month periods
over the same 90 years, the
result was the same: investing the cash all at once came out ahead about two - thirds of the
time in the case of six - month periods and 92 % of the
time over 36 - month
spans.
Okay, on detecting trends — here: http://www.google.com/search?q=grumbine+detecting+trends http://moregrumbinescience.blogspot.com/2009/01/results-on-deciding-trends.html ``... there has to be a
time span over which our
result for describing climate does not depend much on how long a
time span we choose.
In a system such as the climate, we can never include enough variables to describe the actual system on all relevant length scales (e.g. the butterfly effect — MICROSCOPIC perturbations grow exponentially in
time to drive the system to completely different states
over macroscopic
time) so the best that we can often do is model it as a complex nonlinear set of ordinary differential equations with stochastic noise terms — a generalized Langevin equation or generalized Master equation, as it were — and average behaviors
over what one hopes is a
spanning set of butterfly - wing perturbations to assess whether or not the
resulting system trajectories fill the available phase space uniformly or perhaps are restricted or constrained in some way.
The point they make may be summarized by the following quote: «While in the observations such breaks in temperature trend are clearly superimposed upon a century
time - scale warming presumably due to anthropogenic forcing, those breaks
result in significant departures from that warming
over time periods
spanning multiple decades.»
I'm preparing a post comparing the Wang et al.
results from AVHRR to NCAR / NCEP,
over the same region (60N to the pole) and same
time span (begin 1982 to end 2004).