Sentences with phrase «frequency analysis of»

Atmospheric CO2 fluctuations during the last millennium reconstructed by stomatal frequency analysis of Tsuga heterophylla needles (Geology, v. 33; no. 1; p. 33 - 36, January 2005)- Lenny Kouwenberg, Rike Wagner, Wolfram Kürschner, Henk Visscher, at http://geology.geoscienceworld.org/cgi/content/abstract/33/1/33

For some authors it is a frequency peak of ~ 88 years that appears in frequency analysis of the cosmogenic record (McCracken et al., 2013b; Knudsen et al., 2011; figure 86).

Frequency analysis of 14C and 10Be display other clear peaks at 52, 104, 130, 150, 350, 515, and 705 years (McCracken et al., 2013b).

Every frequency analysis of Holocene solar activity reconstructions shows a strong peak at ~ 1000 year (figure 62 A & C, Darby et al., 2012; Kern et al., 2012).

An ad hoc adjustment to this short period based on minimising the disruption allows frequency analysis of whole record and assessment of the effects of HadSST3 which was the point of this study.

A similar frequency analysis of HadSST3, shown in Figure 7, shows that the long term cyclic variation, greater then 100 years, has been severely attenuated.

They carried out a detailed frequency analysis of their data and found characteristic cycles with periods in the range of several decades and centuries.

Frequency analysis of temperature data just seems inappropriate if you ask me.

The analyst had a copy of the complete data, but only seems to have done a cursory word frequency analysis of the released subset.

Not exact matches

Because 800 - number costs are predictably intricate — varying by distance, frequency, and time of day — a home businessperson should get out a calculator for the final analysis.

Dr. Sanborn said he gave the agents a couple of academic papers he has written that include analyses of the temporal patterns and spectral frequency of various cicada calls, but has not heard from them again.

Published research focuses on the analysis of market signals on entities and sectors, as well as on signal interpretation and model analysis utilizing Moody's Analytics tools such as Market Implied Ratings and Expected Default Frequencies.

The analysis for determining this is fact specific but it is largely based on the frequency of the activity.

Its client functionality meets the demands of users of leading exchanges and FX brokers with its professional interface, technical analysis functionality and high - speed data connectivity options (perfect for high frequency traders).

«With the help of a text analysis program, the researchers found that Christians tweet with higher frequency words reflecting positive emotions, social relationships»

A review by Goldman (2005) of five studies using multivariate analyses which isolate the independent impact of fathers» involvement in children's learning on educational outcomes, clearly shows that fathers» involvement (both in terms of level and frequency) in their children's schools is a key factor that correlates with better educational outcomes for children.

Data were entered and analyzed using SAS, BMDP, and Epi Info version 6.17 Statistical tests used to compare sociodemographic characteristics (Tables 1 and 2) included Student's t test, χ2 test, and Fisher's exact test as appropriate.18 Analyses of breastfeeding problems and frequency were examined using χ2 tests and Student's t test, respectively.

Power analysis, based on detecting a significant difference in the combined frequency of non-optimal factors during and after childbirth, led us to aim for a sample size of 1600 women, with approximately half being multiparous and preferably half choosing hospital birth.

Drawing from AAAS» fingerprint report, which includes an extensive review of the scientific literature, evaluations of when such analysis is or is not well grounded in science and a review of practices lacking scientific foundation, Holt urged the Justice Department to not permit examiners to estimate the frequency of any fingerprint observation or use the term «identification» or «source identification» in testimony or reports.

A further issue is that tracking mutations through bulk analysis of cells is typically based on certain assumptions as to how mutations arise and what their frequencies mean.

From an analysis of the frequency and distribution of the script's characters, the team concluded that it showed few of the hallmarks of language.

Analysis of a specific gene has now demonstrated that although bats live in air and dolphins in water, where sound travels five times faster, they independently evolved a near - identical gene that allows them to accept high - frequency sound in the ear — vital for sonar.

In the current study, the researchers used extreme value analysis and found that the frequency of U.S. outbreaks with many tornadoes is increasing, and is increasing faster for more extreme outbreaks.

Careful analysis of what frequencies are absorbed, and by how much, can directly reveal the presence of water vapor and other compounds, and can divulge climate parameters, such as temperature and pressure, that determine if liquid water is sustainable.

The «tests» are performed via Finite Element Analysis using professional software that simulates the reaction of objects to loads and vibrations, thus predicting limiting loads and frequencies.

To categorize companies on the basis of that information, Senn - Delaney used a statistical process that included frequency analysis, stepwise regression, and discriminant analysis.

To study the textbooks, the researchers applied text analysis to conduct an exhaustive examination of the choices and frequency of language, including the level of uncertainty as well as the agents involved.

A more detailed analysis revealed that both pictures represent a complementary description in the time and frequency domain of the same nonlinear process.

The initial, crude analysis of the bridge's behaviour, based on the frequency at which the bridge resonates, did not indicate that anything was wrong until the flange was damaged.

Statistical analysis of the frequencies of the different forms of the OR7D4 gene from around the world suggested that the different forms of this gene might have been subject to natural selection.

Acoustic analysis revealed why: Those pushier purrs harbored a hidden higher - pitched meow, with a frequency similar to that of a human infant's cry.

* During the subsequent analysis the astronomer can move through the data and study different views of the object at different wavelengths, just like tuning a television to different channels at different frequencies.

All down to dust In the joint analysis, the researchers overlaid data recorded by the BICEP2 telescope at a frequency of 150 gigahertz (GHz) with data recorded from the same patch of sky by Planck at 353 GHz, a frequency at which almost all the polarized light comes from dust.

A phylogenetic analysis of the calls of 92 mammalian species showed that those frequency modulations have evolved independently in six mammalian orders, including the Carnivora, Primates, Artiodactyla, Perissondactyla, Rodentia, and Chiroptera.

To tackle this problem, Patricia Lopes and her colleagues used a novel combination of experimental manipulations of free - living mice, radio frequency tracking of animals, social network analysis and disease modelling.

«The results of our acoustic analyses show that howler monkeys produce roars at a similar frequency as tigers, which is far lower than we would have predicted from their body size, yet exactly what would be predicted from measuring their giant vocal folds.»

The analysis of high - frequency surface air temperature, mean sea - level pressure, wind speed and direction and cloud - cover data from the solar eclipse of 20 March 2015 from the UK, Faroe Islands and Iceland, published today (Monday 22 August 2016), sheds new light on the phenomenon.

Background Often, the frequency of outcomes for an event can be modeled and predicted using statistical analysis.

Using computer analyses, researchers suggest that airflow through the bony tube would have generated sound with a frequency somewhere between 248 and 746 cycles per second — a range that encompasses the droning tone of the South African vuvuzela, which became notorious during soccer matches held during the 2010 World Cup.

For this work, Goodell and colleagues including his collaborator Jody Jellison, now director of the Center for Agriculture, Food and the Environment at UMass Amherst, used a suite of investigative methods including small angle neutron scattering (SANS), sum frequency generation (SFG) spectroscopy, Fourier transform infrared (FTIR) analysis, X-ray diffraction (XRD), atomic force microscopy (AFM) and transmission electron microscopy (TEM) to fully describe the process.

An analysis, published in the journal Ecology Letters, suggests that forests are at risk globally from the increased frequency and severity of droughts.

A responder analysis of this study shows that approximately one - third of patients demonstrated more than a 90 % reduction in cough frequency, and this analysis was consistent with patient - reported assessments of reduction in cough severity.

In addition, their analyses also showed that smoking increases with duration of U.S. residence among Asian immigrants (both prevalence and frequency) and among Latino immigrants (frequency only).

The authors note that their analyses do not account for impact of increased frequency of screening and follow - up on quality of life of those screened.

Overall, though, analysis suggested that the dark matter idea would be more likely to produce the observed patterns in crater frequency than an even rate of cratering.

To achieve a more detailed analysis of this process, scientists have struggled to increase the frequency and the intensity of these pulses.

Analysis of 166 stars found almost a quarter — much more than expected — had small, rocky planets, which should force a change in thinking on the overall frequency of such bodies.

In order to find out whether this polymorphism is also associated with extreme longevity, Spanish researchers performed an analysis of the frequencies of this polymorphism among centenarians and healthy adults in two independent cohorts, by geographical regions and by ethnic groups.

For their analysis, researchers used the results of 23 rigorous studies on the short - and long - term impact of school - based interventions on student knowledge of teen dating violence, attitudes toward teen dating violence, and frequency of perpetration or victimization in adolescent intimate partner relationships.

To quantify the difference, a 2013 meta - analysis looked at placebo effects in 79 studies of migraine prevention: sugar pills reduced headache frequency for 22 percent of patients, fake acupuncture helped 38 percent, and sham surgery was a hit for a remarkable 58 percent.