Sentences with phrase «change in the frequency of»

Second, no speciation has occurred here — only changes in the frequency of one variety over the other.

Watch Out The Baby For Signs Of Constipation And Note Changes In The Frequency Of Bowel Movements

Ultracapacitors connected to local government office buildings have proved able to compensate for changes in frequency of the electricity supply within a fraction of a second.

This time, researchers looked for a change in the frequency of waves — with shorter wavelengths meaning a higher frequency, and vice versa — in a type of laser in atomic clocks.

Scientists in northern Spain tracking populations of Drosophila subobscura, a type of fly, observed reversible changes in the frequency of genetic mutations, or «chromosomal inversions» in the flies» genomes — essentially, parts of the chromosome get flipped around with the seasons, as the weather changes from hot to cold.

«We have to really think about anticipated changes in the frequency of extreme events,» Cloern said.

This explains observations made, for instance, in the USA: according to the FBI's Uniform Crime Reporting Program, cyclical changes in the frequency of criminal offences can be found in several American states.

In this new, unbiased, «trend - in - trend» design, researchers monitor changes in frequency of outcomes as they relate to changes in an exposure to a drug across groups that adopt the drug at different rates.

The researchers then visualized the velocity of the two liquids using a technique called Laser Doppler Velocimetry, which detects changes in the frequency of light waves when a laser beam hits them.

Today, evolution is defined as the change in the frequency of alleles in populations over time.

When a person moves in an environment saturated with wi - fi signals from routers, laptops and mobile phones, that movement creates a slight change in the frequency of those signals, says lead researcher Shyam Gollakota, a U.W. assistant professor of computer science and engineering.

In a study published in the journal Cell on July 14, the researchers found that placing enhancers in different positions relative to their target genes resulted in dramatic changes in the frequency of the bursts.

b shows regions that have experienced changes in the frequency of long fire weather seasons (> 1σ above historical mean) during the second half of the study period (1996 — 2013) compared with the number of events observed during the first half (1979 — 1996).

Second, we examined the change in frequency of occurrence of unusually hot, dry or windy conditions by comparing the number of years that maximum temperature, rain - free days or wind speed was > 1 s.d. above the mean or when minimum relative humidity was < 1 s.d. from the mean in 1996 — 2013, as compared with the number of similar events observed in 1979 — 1996.

This metric was examined to identify global and regional patterns in fire weather season length changes as well as changes in the frequency of, and the area affected by, long fire weather seasons (defined as > 1.0 σ above historical mean) over the last 35 years.

b, d, f and h show the change in frequency of the number of years with anomalous mean annual weather conditions (> 1σ above historical mean) from 1996 to 2013 compared with the number of anomalies observed from 1979 to 1996.

A small change in average global temperature leads to a dramatic change in the frequency of extreme events.23 24 25 The following graphs in Figure 5 help to illustrate this point.

[2] The Doppler Effect is a change in the frequency of a wave emanating from a moving object.

The abdominal pain or discomfort must be associated with two of the following: 1) improvement with defecation; 2) onset associated with change in frequency of stool; 3) onset associated with change in form (appearance) of stool.

One of the most noticed at first is a major change in the frequency of your bowel movements.

Households react strongly to the incentives created by such programs, leading to significant changes in the frequency of exercising alternative public schooling options, as well as changes in the composition of the «opt out» students.

Any changes in frequency of urination should be checked by your veterinarian immediately.

If you are one of a distributor's top accounts — either because of the volume of business you do with that distributor or the total size of your business that could result in more sales — you may have seen no change in the frequency of visits from your distributor rep.. But if you fall into a distributor's C / D account list, chances are you are not seeing a distributor sales rep as frequently as in the past, or at all.

Binding the exhibition together are Gillick's flickering signage for the individual works (with their hideously trite interpretive descriptions) and Carsten Holler's 7.8 Hz which causes a change in the frequency of the electrical system that turns the exhibition lights on and off at set intervals, plunging works into darkness or rendering the film and video projections temporarily invisible.

Given that, looking at changes in frequency of events (or return times, as is sometimes done), is more general and allows different sectors / people to assess the effects based on their prior experience.

I live in a small town some 200Km north of Sao Paulo, and changes in the frequency of frosts and duration of Winter cold are noticeable comparing to, say, 20 years ago.

But this human adaptation time scale may be longer than the time over which climate change affects storms, so that comparatively small changes in the frequency of generational events can have large social consequences.

Adjusting for El Nino might be difficult in that global warming may cause change in frequency of El Nino hence such adjustment might remove some of the signal as well as some of the noise.

While the changes in both the mean and higher order statistical moments (e.g., variance) of time - series of climate variables affect the frequency of relatively simple extremes (e.g., extreme high daily or monthly temperatures, damaging winds), changes in the frequency of more complex extremes are based on changes in the occurrence of complex atmospheric phenomena (e.g., hurricanes, tornadoes, ice storms).

However, simple statistical reasoning indicates that substantial changes in the frequency of extreme events (and in the maximum feasible extreme, e.g., the maximum possible 24 - hour rainfall at a specific location) can result from a relatively small shift of the distribution of a weather or climate variable.

For instance, T. Palmer, a scientist at the European center for medium - range weather forecast, writes in the journal «Weather» that climate predictions using GCMs could be grossly misleading because the computer simulations may be unable to accurately predict long - term changes in the frequency of weather patterns.

Changes in the frequency of extreme events coinciding with global warming have already been observed, and there is increasing evidence that some of these changes are caused by the impacts of human activities on the climate.

There was no change in the frequency of dry years during the 120 - year record, they reported.

Also, changes in the frequency of other, smaller scale weather extremes, notably droughts, heat waves, wildfires, and extreme rainfall, although they have not been specifically assessed here, can occur.

Recent work (e.g., Hurrell 1995, 1996; Thompson and Wallace 1998; Corti et al., 1999) has suggested that the observed warming over the last few decades may be manifest as a change in frequency of these naturally preferred patterns (Chapters 2 and 7) and there is now considerable interest in testing the ability of climate models to simulate such weather regimes (Chapter 8) and to see whether the greenhouse gas forced runs suggest shifts in the residence time or transitions between such regimes on long time - scales.

«The authors write that North Pacific Decadal Variability (NPDV) «is a key component in predictability studies of both regional and global climate change,»... they emphasize that given the links between both the PDO and the NPGO with global climate, the accurate characterization and the degree of predictability of these two modes in coupled climate models is an important «open question in climate dynamics» that needs to be addressed... report that model - derived «temporal and spatial statistics of the North Pacific Ocean modes exhibit significant discrepancies from observations in their twentieth - century climate... conclude that «for implications on future climate change, the coupled climate models show no consensus on projected future changes in frequency of either the first or second leading pattern of North Pacific SST anomalies,» and they say that «the lack of a consensus in changes in either mode also affects confidence in projected changes in the overlying atmospheric circulation.»»

The changes in frequency of ENSO events and the multi-decadal PDO is related to more or less cold water entering the gryres as storms spin off the polar vortices more or less into lower latitudes.

Yet another group looked not at average temperature patterns but the change in the frequency of heat waves and saw a different kind of rise.

By then comparing the results of these Industrial and Non-industrial simulated climates, and recording the occurrence of floods like that of Autumn 2000 in each of them, the change in the frequency of occurrence (or «risk») of such a flood was determined, and therefore how much risk is attributable to human - induced emissions of greenhouse gases over the last century.

«Even if there are changes in the frequency of extremes, that does not necessarily mean human influences are behind them.»

Trewin, B. and H. Vermont, 2010: Changes in the frequency of record temperatures in Australia, 1957 - 2009.

Many impacts of climate change will be realised as the result of a change in the frequency of occurrence of extreme weather events such as windstorms, tornados, hail, heatwaves, gales, heavy precipitation or extreme temperatures over a few hours to several days.

I agree to any increase in deductions due to change in government regulations / service tax rates / scheduled increase as per the product features or change in frequency of premium payment and authorize Exide Life Insurance Company Limited to effect it with the bank directly.

Factors that influence trajectories of change in frequency of use and quality of life among adolescents receiving a brief intervention.

The primary evaluation criterion was the change in frequencies of aggression and active vs. passive bystander behavior.

Not exact matches

In fact, during times of change, you should increase the frequency of your communication 3X.

At the same time, regulators change trading «ticks,» or the increments in which stocks can trade, from the current decimalization to nickel sizes, eliminating the benefits that high - frequency traders enjoy from capitalizing on moves of pennies.

The main challenges in developing this application was the integration with multiple systems, some of which were legacy systems; and the update frequency of the application, as products and promotions had to be created on the go, prices change on a continuous basis and new products are added every hour.

Anyway, on Sept. 11, the New York Times published an article that noted the increasing frequency of extreme market gyrations has regulators «looking at changes in the markets and automated trading strategies.»

Making use of the high frequency changes in productivity growth over one - to five - year periods, we run a series of regressions to test this link more rigorously.