Sentences with phrase «measurement periods ranging»

Over long measurement periods ranging between 13 and 28 years, all of these value managers significantly outperformed the market as measured by the Dow Jones Industrial Average and the S&P 500; however, all, with the exception of Warren Buffett went through periods of underperformance relative to these benchmarks, sometimes consecutive years of underperformance, ranging from one to six years.

There were four measurement periods ranging from before the start of intervention to six months after training had ended.

Not exact matches

In their November 2017 paper entitled «Tail Risk Mitigation with Managed Volatility Strategies», Anna Dreyer and Stefan Hubrich examine usefulness of managing volatility in this way as applied to the S&P 500 Index over a long sample period and across a range of performance measurements.

In the new paper, published in the journal Environmental Research Letters, Höglund - Isaksson estimated global methane emissions from oil and gas systems in over 100 countries over a 32 - year period, using a variety of country - specific data ranging from reported volumes of associated gas to satellite imagery that can show flaring, as well as atmospheric measurements of ethane, a gas which is released along with methane and easier to link more directly to oil and gas activities.

In their November 2017 paper entitled «Tail Risk Mitigation with Managed Volatility Strategies», Anna Dreyer and Stefan Hubrich examine usefulness of managing volatility in this way as applied to the S&P 500 Index over a long sample period and across a range of performance measurements.

I usually collect all of these measurements monthly for my own site and have therefore seen some large changes to these metrics, so I suggest you monitor these metrics for a period and understand what is the typical top and bottom of your range as this will give a better indication than a single point in time.

The graph below (high - resolution copy) shows the range of the forecasts for early September, the point when the sea ice typically reaches its minimum extent, compared to recent years and the average over the period of precise satellite measurement.

Trends reflect the mean change in temperature (in K per decade) between 20 ° N and 20 ° S for the period 1979 — 2005, obtained from radiosonde temperature measurements 5 (blue and green colours), climate models 8 (dashed orange, with grey shading indicating 2 - sigma range) and the new reconstructions from radiosonde winds 4 (pink, with error bars indicating 2 - sigma range).

If they do not reflect the range of reasonable values that are supportable in the literature (remember, we have no direct satellite - based measurements of TSI from the 1910 - 1940 period to check the reconstructions against), then you are assuming that TSI for the period is known with greater accuracy than it is.

They use a range of techniques to track changes in the volume of the ice - sheet over a 500 - year period, and compare it with measurements of ice - accumulation obtained by deep boring undertaken by Lonnie Thompson of Ohio State University.

Climate, sometimes understood as the «average weather,» is defined as the measurement of the mean and variability of relevant quantities of certain variables (such as temperature, precipitation or wind) over a period of time, ranging from months to thousands or millions of years.