Sentences with phrase «study areas estimated»
The parents of children who didn't have desks or study areas estimated that they spent 4 hours and 41 minutes studying.
https://www.qaeducation.co.uk/ Not exact matches
A 2013 study estimated about 1.4 percent of children living in an impoverished area in the United Kingdom had an attachment disorder.
Stressed trees no longer store as much CO2 The U.K. - Brazil research team that produced the new study used satellite measurements of dry season rainfall to estimate the magnitude of the two droughts over a study area of 5.3 million square kilometers in the southwest Amazon.
«In our study, the estimates of carrying capacity for each diet are sensitive to assumptions about the area available for cultivated cropping.
In this study, researchers utilized national data on inpatient deaths in the United States to estimate the potential supply of deceased organ donors, and used these data, in combination with State Inpatient Databases (SIDs) to develop new metrics of OPO performance that better reflect the true deceased donor supply in each geographic area.
Even though the hotspots only occur on about 1 percent of the area, they contribute 17 percent to the annual methane emission estimate of the study area.
They estimated that the population of oystercatchers within the survey area was 1,048 individuals, and comparisons with more exhaustive surveys in a subset of the study area show that this number is likely accurate.
Based on data from 11 study areas across Washington, Oregon and northern California, a rangewide decline of nearly 4 percent per year was estimated from 1985 to 2013.
That made the study's approach unique in this branch of climate change literature, which typically relies on weather estimates over broad geographical areas.
Overall, the study found that the more protective O3 standard accounted for about 75 percent of the estimated health benefits due to a greater number of metropolitan areas with O3 concentrations above the ATS recommendations.
Led by researchers at the National Oceanic and Atmospheric Administration (NOAA) and the University of Colorado, Boulder, the study estimates that natural - gas producers in an area known as the Denver - Julesburg Basin are losing about 4 % of their gas to the atmosphere — not including additional losses in the pipeline and distribution system.
In the study, the team also estimated that glacier area will be severely reduced by the end of the century, to about a tenth of the 1986 values.
Most of the participants will come from a well - studied extended Colombian family living in Medellin and its surrounding rural areas that is estimated to have 5,000 members.
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.
In the field research, we studied 225 plots (each 3,000 m2) in two large regions in an area measuring 3 million hectares [30,000 square meters], which we used as a model to estimate what occurred in the Amazon as a whole,» Ferreira explained.
«By studying remote and marine protected areas, we were able to estimate how much fish there would be on coral reefs without fishing, as well as how long it should take newly protected areas to recover,» said M. Aaron MacNeil, Senior Research Scientist for the Australian Institute of Marine Science and lead author on the study.
Image analysis of the immunohistochemical studies displayed in A (staining with an anti-IAPP antibody) was performed to estimate the percentage of islets containing amyloid deposits (E) and the load of IAPP aggregates (F), calculated as the percentage of the stained area compared with the total islet area.
The model used in the study could also help researchers estimate populations of protected species present in others area of potential impacts, such as from fisheries, energy extraction operations, and military exercises.
According to one study that looked at eight fuel aridity metrics in the Western U.S. and modeled climate change's effects on them, human - caused climate change accounted for about 55 percent of the observed increases in fuel aridity between 1979 and 2015 (Figure 6), and added an estimated 4.2 million hectares of forest fire area between 1984 and 2015.7 Based on all eight metrics, the Western U.S. experienced an average of 9 additional days per year of high fire potential due to climate change between 2000 and 2015, a 50 percent increase from the baseline of 17 days per year when looking back to 1979.
For individuals marked as young, the probability of random temporary emigration and immigration was estimated to be 0.6 (SE + − 0.19) and 0.68 (SE + − 0.32) respectively, before and after the age of 2 years, suggesting that an estimated 60 — 68 % of young individuals emigrated from the study area, potentially returning subsequently (Table 4).
Function lme in the nlme package was used to estimate the effect of the study area (with nest box identity as a random effect) on the pre-experiment baseline hair sample mass.
A US study in the San Francisco Bay area estimated the total costs.
A recent review of 22 studies of the effect of parental incarceration on child well - being concludes that, to date, no research in this area has been able to leverage a natural experiment to produce quasi-experimental estimates.
American Educational Research Journal, December 2015 In the first analysis to investigate claims of alignment in the context of fourth - grade mathematics using tools capable of estimating the alignment of curriculum materials with the standards, results indicate areas of misalignment; including that the textbooks studied systematically overemphasize procedures and memorization relative to the standards, among other weaknesses.
Taking practice tests lets you estimate how well you'll do on the AP exam, shows you the areas you need to focus your studies on, and helps you become more comfortable with the format of the AP exam.
Studies in this area include alignment studies, DIF, standard setting, and estimating different types of reliaStudies in this area include alignment studies, DIF, standard setting, and estimating different types of reliastudies, DIF, standard setting, and estimating different types of reliability.
«This was clearly not realistic, as the estimated maximum numbers of birds killed typically exceeded breeding density and productivity combined, such that the prey populations studied would probably have gone extinct rapidly at a local level or acted as a major sink for birds immigrating from neighbouring areas.»
The Studies In the first study, Baker et al. distributed questionnaires to 3,494 households across a 4.2 km2 area of northwest Bristol (UK), and used responses to estimate cat ownership and predation levels (via prey returned home).
In urban areas in particular, cats are one of the most common avian predators (Sims et al. 2008), but their total impact on wildlife is difficult to estimate and varies greatly between studies (Fitzgerald and Turner 2000) and with study methodology (Krauze - Gryz et al. 2012a).
The study derives an estimate of a total methane emission rate from the East Siberian Arctic shelf area based on the statistics of a very large number of observed bubble seeps.
This week in the journal Nature, Csatho writes a «News and Views» analysis that comments on the latest research in this area: A new study in Nature by Kristian K. Kjeldsen, Niels J. Korsgaard, Kurt H. Kjær and colleagues, who used aerial photographs, remote - sensing observations and geological evidence to estimate the Greenland Ice Sheet's mass loss during three time periods since the start of the 20th century: 1900 - 83, 1983 to 2003 and 2003 - 10.
Based on a methodology developed in a previous study that estimated wood supply on four National Forests in northern Arizona [33], we subtracted from the total area of ponderosa pine in the watersheds — 0.68 million ha (1.68 million acres)-- those areas that are typically excluded from mechanical thinning projects due to steepness, restrictions in land management, previous treatments, or considerations of soil, habitat, or wildlife conditions (Table 1).
The only comprehensive study of the Antarctic Ice Sheet mass was a 10 + year study based on continuous 24/365 satellite measurements over the period 1993 to 2003, covering 80 % of the AIS with estimates from other methods for the remaining 20 %, which can not be measured by satellites (coastal areas and polar regions).
Bridget Deemer, one of the study researchers, said estimates of methane emission per area of reservoir are 25 percent higher than what they previously calculated.
The case study planned was to send a team up to Anyox area, and radiating outwards from the smelter, to assess the state of the surroundings and develop a baseline for estimating the permanent to long term damage that metal smelting caused.
Another presenter at the session, Paul Chang, a project scientist who studies satellite ocean surface wind data at the National Oceanic and Atmospheric Administration's Center for Weather and Climate Prediction in College Park, Md., said that the current method that is largely used by U.S. scientists in this area of research, known as the Dvorak technique, employs satellite imagery to estimate tropical cyclone intensity but is imprecise and subjective.
A study on 1981 to 1995 weather data (Pretlove and Oreszczyn, 1998) indicated that temperature and solar radiation in the London area (UK) had changed significantly over the period, and climatic data used for energy design calculations could lead to 17 % inaccuracies in building energy - use estimates.
These revised coal reserves estimates include improved analyses of coal quality, accessibility, and recoverability in the study areas.
The study estimates around 40 percent of new impervious areas came from areas where trees used to grow.
These results, based on long observed time series, do not confirm earlier studies claiming that the Hurst coefficient of temperature in continental areas is 0.5, which would imply temporal independence of continental climatic processes (Blender & Fraedrich, 2003; Fraedrich & Blender, 2003); this was also disputed in a discussion by Bunde et al. (2004), who found values 0.6 — 0.7, whereas, more recently, Alvarez - Ramirez et al. (2008) estimated even higher values in some periods.
An interim UN-World Health Organisation study said that in the most affected areas of Fukushima prefecture, thyroid doses from iodine - 131 were estimated as between 10 and 100 mSv apart from one area which was lower, at 1 to 10 mSv, and one that was higher for infants at 100 - 200 mSv.
This study uses city area, which they argue provides a more consistent estimate and can be derived from satellite data.
Backup generation requirements are exaggerated; transmission costs for new renewables are four times as high as more credible, independent estimates — in one area after another, ALEC's studies have a loose and biased relationship to empirical data.
A study in the East Siberian Arctic Shelf region in 2005 revealed that this was not the case; now Shakhova and colleagues from the University of Alaska Fairbanks, US, the Russian Academy of Sciences and Stockholm University, Sweden, have used data from across the area to estimate how much methane the East Siberian Arctic Shelf is releasing each year.
Cities in the United States are increasingly seeing concrete in place of greenery as urban areas lose an estimated 36m trees annually, according to a study from the Forest Service.
When used for the Peruvian study area, the IPCC baseline estimate for carbon storage is 587 million metric tons.
The study estimates that protected nature areas around the world receive 8 billion visits per year.
In a landmark study in this area from the early 1990s, researchers estimated the heritability of divorce to be about 50 %.1 What does a heritability estimate like this mean?
Most employed Aboriginal and Torres Strait Islander daily smokers (406; 88 %) reported that smoking was not allowed in any indoor area at work, similar to the standardised estimate in Wave 8 of the Australian ITC Project study (88.5 %)(Box 1).
Current areas of study are techniques for estimating effect sizes in small samples, statistical models and graphic techniques for analyzing data, and techniques appropriate for behavior genetics study.