Sentences with phrase «study yields an estimate»

Multiplying that figure with the lowest estimates for mortality rates in the national meta - study yields an estimate of 1,148,000 birds and 5,975,000 mammals killed by cats in Anchorage each year.

Not exact matches

A 1980 study by the World Bank of West African countries showed that the demand for wood for fuel exceeded the estimated sustainable yields of forests in eleven of the thirteen countries surveyed.

And reforms to the work and study tiers of the Points - Based System have been estimated by government impact assessments to yield reductions in net migration smaller than required if they are to bear a proportionate share of a reduction in net migration large enough to meet the numerical goal.

Of the audits compiled as part of the study, 22 pointed to water loss as an issue and estimated that fixes could yield as much as $ 2.2 million in savings.

A recent study from the Illinois Crop Physiology Laboratory, led by Fred Below, a U of I crop physiologist, provides the first estimate of the corn yield gap for the U.S. Corn Belt.

The study also allowed the researchers to make several critical comparisons in order to estimate the yield value of each technology factor when it was a component of a traditional system of lower inputs and when it was a component of an advanced system of higher - level inputs.

Respondents also estimated that less than half of the studies published 10 years ago yielded conclusions that could be replicated, and for recent studies, that figure is about half, Motyl and Skitka reported in the July Journal of Personality and Social Psychology.

Simple engineering analyses that estimate bone strength may yield overly optimistic results, a new study suggests.

A 16 - year study was used for robust estimates of the yield potential on organically managed crop land in southern Wisconsin as well as nitrous oxide and methane emissions and soil carbon.

Co-author Graham Slater of the University of Chicago notes that even studies that yielded similar time estimates were based on observation and guesswork and lacked measurements to back them up.

The team is now working on expanding the study area to the entire Corn Belt, and investigating further applications of the data, including yield and other quality estimates.

The Department of Energy's budget request — the same document calling for a 70 percent cut to energy efficiency and renewable energy programs — touts a study showing that the $ 12 billion invested by the agency in this research over the years has yielded «an estimated net economic benefit to the United States of more than $ 230 billion.»

It is important to regard the LGM studies as just one set of points in the cloud yielded by other climate sensitivity estimates, but the LGM has been a frequent target because it was a period for which there is a lot of data from varied sources, climate was significantly different from today, and we have considerable information about the important drivers — like CO2, CH4, ice sheet extent, vegetation changes etc..

However, recent studies using randomized admission lotteries at charter schools and the random assignment of teachers has suggested that simple, low - cost methods, when they control for students» prior achievement and characteristics, can yield estimates of teacher and school effects that are similar to what one observes with a randomized field trial.

Empirical studies of consolidation yield overall estimates of cost savings that are relatively modest, with the largest percentage of savings accruing from consolidating very small districts.

The vaccine appears to be safe, but various studies have yielded different estimates of vaccine efficacy.

Building on earlier research showing the carbon payback time of biofuel crops grown on certain types of land, the new study uses «a new, geographically detailed database of crop locations and yields, along with updated vegetation and soil biomass estimates, to provide carbon payback estimates that are more regionally specific than those in previous studies,» write the authors.

A few studies using this approach since about 2012 have begun yielding lower climate sensitivity estimates.

The approach Müller considers «most practical» for adaptation studies is to simply make assumptions that fall somewhere within the range of model projections — for example, a 2 - degree temperature rise and 20 % less rain — when estimating consequences such as shifting crop yields.

The Clean Power Research report estimated levelized values for a fleet of 30 - degree - south - tilted distributed solar arrays (which yielded the highest values of all the different configurations) in seven different locations across New Jersey and Pennsylvania: The sum of all values ranges from $ 256 / MWh to $ 318 / MWh in the various locations studied.

Perform hydrogeological evaluations, including well feasibility studies, step - drawdown tests, and pump tests of aquifers to estimate potential aquifer drawdown, safe yields, and mounding.

Unexplained heterogeneity or inconsistency of results: we will look for robust explanations for heterogeneity in studies that yield widely differing estimates of effect.

The overall prevalence estimates of depression or depressive symptoms reported by the 83 studies yielded a summary prevalence of 27.0 % (10943 / 41344 individuals, 95 % CI 24.0 % to 29.0 %), with significant between - study heterogeneity (p < 0.0001, τ2 = 0.3742, I2 = 96.7 %).

Because of skewness and the ordered categorical nature of our variables, we estimated α within a structural equation model framework, which resulted in higher α coefficients.20 Our ω reliability analyses yielded results consistent with previous studies reporting ω reliabilities for preschool and school - age SDQs.9, 16

Several studies have addressed the validity of the parent - reported SDQ in school - aged samples, predominantly confirming the intended 5 - factor structure.5, 6 A 3 - factor configuration of externalizing (conduct problems and hyperactivity), internalizing (emotional and peer problems), and prosocial factors has also been proposed and suggested for use in epidemiologic studies and in low - risk populations.7, 8 The internal reliability of SDQ subscales has been predominantly examined by using Cronbach's α, a measure of the interrelatedness of items; however, α estimates are a lower bound for reliability and is often underestimated.9 A meta - analytic review reported weighted mean α coefficients extracted from 26 studies that showed generally modest reliabilities for parent reports (0.53 < α < 0.76).10 McDonald's ω, which estimates the proportion of a scale measuring a construct, typically yields higher reliability estimates but has rarely been used to assess reliability of the SDQ.

A number of methodological studies provide empirical evidence to support these precautions.152 153 Trials in which the allocation sequence had been inadequately or unclearly concealed yielded larger estimates of treatment effects than did trials in which authors reported adequate allocation concealment.