Sentences with phrase «estimating population numbers»

And then, of course, there are the risks inherent in estimating population numbers and characteristics based on a small sample size.

By measuring the sediment chemistry, we were able to estimate the population numbers throughout the period and see how penguins were affected by the eruptions.

Not exact matches

In addition to showing the estimated total population change in those areas between July 1, 2016 and July 1, 2017, the Census Bureau also included a breakdown of the components of that change, including net international migration, or the number of immigrants from other countries moving into a county minus the number of people leaving that county for another country.

First, the number of Jews who can be thought of as threatening non-Jewish control of U.S. industry is not so large as the Jewish population estimate of 1933 would suggest: the great mass of the 4,500,000 American Jews, like the great mass of American non-Jews, is made up of workers, employed or unemployed, to whom the control of U.S. industry is a purely academic matter.

Piketty and Saez address these omissions by estimating the number of non-filers and their income and adding these to the population of tax filers and the market income calculated from the income tax data.

The number of consumer fixed Internet users was not taken directly from an analyst source but was estimated from analyst forecasts for consumer broadband connections, data on hotspot users from a variety of government sources, and population forecasts by age segment.

The population of DIY investors who want to actively trade their own stocks each day and need news that caters to them is small and shrinking (their estimates are that the number is 3 million people in the US).

This number has since grown rapidly, to the point that in 1980 there are estimated to be 200 million Christians (or about 45 per cent of the population).

46 Mark A. May estimated in 1933 that «since 1870 the number of college - graduate men entering the ministry relative to the needs as measured by increasing population, churches, and clergymen has declined at least forty per cent and possibly as much as seventy per cent.»

An estimated 37 million Hispanics live in the U.S., representing 13 % of the country's population, and those numbers are projected to rise to 55 million and 17 % by 2025.

Yet the teeming, heterogeneous port of Odessa, where in the early 20th century Jews numbered an estimated 165,000 out of a population of nearly 480,000, was something of an exception.

It wasn't 210,000 babies dying, it was an estimated number from the whole population.

These schools represent approximately 55 % of the total number of schools in our district, with an estimated combined population of over 100,000 students, and the free meals will become available when our school year begins a week from today.

The estimated number of children adopted in the year 2000 was slightly over 128,000, bringing the total U.S. population of adopted children to 2,058,915.

Thus, government is putting in place the necessary blocks, such as the issuance of a national ID Card, a National Digital Property Addressing System, and the use of a Tax Identification Number to access key services, to broaden the tax base and reduce the tax burden on the estimated 1.2 million taxpayers supporting a population of about 27 million.

For instance, before Britain's referendum on European Union membership last year, a poll by Ipsos Mori found that voters typically estimated the number of migrants living in the UK to be 31 % of the population.

The number of refugees in Lebanon is estimated to make up a third of its population, giving it the largest concentration per capita in the world.

The Community Service Society estimated the number of rent - regulated units in each legislative district by allocating the rent - regulated apartments from the New York City Housing and Vacancy Survey's sub-borough areas into legislative districts in proportion with the 2010 local census tract population.

The rate is calculated by the House of Commons library and shows the number of claimants as a proportion of the estimated economically active population aged 16 to 64 resident in each constituency in 2008.

NEW DELHI — Hot on the heels of a study that used feces to track penguin populations from space (ScienceNOW, 6 June), researchers in India are reporting that DNA from tiger poop can help them estimate the cat's numbers in the wild.

Transmissibility is generally estimated through the parameter known as the basic reproductive number, R0, which is the average number of secondary cases generated by one typically infectious individual in an otherwise susceptible population.

The U.N. Department of Economic and Social Affairs yesterday released revised numbers for the coming century, raising median estimates for population growth in 2050 and 2100.

Researchers estimate that as much as 7 % of the population has dyscalculia, which is marked by severe difficulties in dealing with numbers despite otherwise normal (or, in Moorcraft's case, probably well above normal) intelligence.

The old estimates were based on 20th - century data from the whaling industry itself, which estimated a worldwide sperm - whale population of about 1.8 million, a number that few scientists found credible.

Although this anecdotal report of five women developing breast cancer after hormone treatment might appear concerning, the editors highlight in their accompanying editorial that it is well below the estimated number of women in the population who would be statistically likely to develop breast cancer.

• In 1990, the number of new cases of atrial fibrillation in men was estimated at 61 per 100,000 population.

Finally, they calculated the population's turnover rate to estimate an average density of 50 clams per square meter over the last millennium — a number that contrasts with fieldwork earlier this year that yielded just three clams per square meter, they report in the December issue of Geology.

It is difficult to accurately estimate the number of transgender people mostly because there are no population studies that accurately and completely account for the range of gender identity and gender expression.

This mismatch between these numbers and 1880 estimates of at least three billion suggests that the passenger pigeon may have been what is known to ecologists as an «outbreak» species, like locusts, that boom and bust with changes in conditions, rather than a species that experiences a singular population explosion, as Homo sapiens has in the last 200 years.

In the many places where information didn't exist, they made estimates, using numbers from similar places, adjusted for the population.

He later said that the minke whale population estimate was mistaken and noted that there was little compelling evidence showing that killer whales were significantly reducing minke whale numbers in that region.

Out of the original population of 20 individuals, it is estimated that today there are between 100,000 and 150,000 beavers in the Fuegian archipelago alone, even though that number is only an indirect approximation, she says.

Based on the pooled sample, researchers estimated average annual numbers and costs for the U.S. population.

The finding is good news for the gloomy field of human population projection, but growth will have to slow substantially in developing countries if global numbers are to peak at an estimated 9 billion people.

«These estimates are political numbers, intended to persuade people, one way or another: either that too many humans are already on Earth or that there is no problem with continuing rapid population growth,» Cohen wrote in his book How Many People Can the Earth Support?

Such data, Durgana said, help researchers then estimate the number of unlisted victims or the unknown population.

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.

8 The number of dogs worldwide is estimated at 400 million, roughly the human population of the United States and Mexico combined.

The dense forests in the two nations harbor an estimated 80 percent of the world's remaining great apes, whose numbers have plunged elsewhere in Africa as human populations have expanded.

James said this translates into an estimated 503,400 deaths from Alzheimer's in the U.S. population over age 75 in 2010, which is five to six times higher than the 83,494 number reported by the CDC based on death certificates.

Norway will itself update its population estimates in July with a «sighting survey», an approved method of extrapolating whale populations from the number spotted from ships.

According to a 2013 study by the University of Washington, the annual number of African elephants being slaughtered to supply the illegal ivory trade is estimated to be as high as 50,000, or roughly one sixth of the continent's remaining elephant population.

Some estimates put the number of landless Brazilians in the countryside at 15 million — nearly 10 per cent of the total population.

No one knows how many Alzheimer's cases might be linked to the mutation, but experts say the number could be large, given that an estimated 30 % of the population carries the mutation.

Recreational anglers can also have a big impact on fish populations by dint of their numbers: An estimated 11 million anglers took some 73 million saltwater fishing trips in the United States in 2010.

In a paper published recently in the journal PLOS ONE, a team of researchers from several Western institutes estimated the number of people living in low - elevation coastal zones, as well as the scale of the population at risk from one - in -100-year storm surge events, by using scenario - based projections.

Based on these numbers, Minor estimates that «1 % to 2 % of the population may be susceptible to the syndrome.»

As of 2012, both the East and West Coast whale populations had more than 63 % (East Coast) and 90 % (West Coast) of the number of whales estimated in each population before the whaling era (approximately 1912 - 1972).

The new numbers will be used in models created by economists, environmentalists, and governments who use population estimates to predict pollution and global warming levels; prepare for epidemics; determine road, school, and other infrastructure requirements; and forecast worldwide economic trends.

Previous studies estimate that 1.8 million arthroplasty procedures are performed each year worldwide, and that number may increase as the population ages.