Sentences with phrase «low frequency analysis»

Since the raw and corrected data is available, the suturing and low frequency analysis can still be carried out.

Not exact matches

«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.»

It was captured using a low - frequency microphone and then verified via precision sound analysis.

Their analysis reveals that linear, stochastic scattering by intense, natural very low - frequency radio waves — known as chorus waves — in Earth's upper atmosphere can account for the observed relativistic electron build - up.

Analyses showed that high - frequency irrigation resulted in higher root zone soil moisture content relative to low - frequency irrigation despite reduced evaporative demand during part of the growing season.

The Collinge team's results, Bertranpetit and his coworkers argue, had been statistically skewed because its study left low frequency variations out of the analysis, an error known as «ascertainment bias.»

At day 34 post infection, human CD4 + T cells were purified by positive selection prior to analysis to reduce any bias from low frequency contaminating human cells.

In unadjusted chi2 analyses, the frequency of the minor Ser482 allele was significantly lower in cases than in controls (29.1 vs. 40.0 %; P = 0.01).

The NIR analysis is complemented with GMRT low - frequency observations at 325, 610, and 1280 MHz, molecular line observations of H13CO + (J = 1 - 0), and archival Chandra X-ray observations.

Participants (aged 10 - 23 years) included 17 males and females with FXS and 16 males and females serving as controls.Univariate voxel - based morphometric analyses, fractional amplitude of low - frequency fluctuations (fALFF) analysis, and group - independent component analysis with dual regression.Patients with FXS showed decreased functional connectivity in the salience, precuneus, left executive control, language, and visuospatial networks compared with controls.

We performed two statistical analyses to support the genetic evidence that indels at this locus, including those observed at low frequency in cfDNA, were likely to represent bona fide reversion alleles.

Overall, whilst the differences in the analyses (e.g., constant genetic vs. constant physical window - width) and in the proportion of the genome (i.e., 63.6 % vs. 30.7 %) analyzed to identify regions of low - or high recombination in the parasitoid wasp and in the honeybee may account for some of the striking differences in the estimated proportions of the genomes with low - and high recombination frequencies, our data do suggest that the recombination frequency in the honeybee is elevated across the entire genome, for regions of both low and high recombination alike.

Resting - State fMRI Data Analysis Toolkit (REST) is a convenient toolkit to calculate Functional Connectivity (FC), Regional Homogeneity (ReHo), Amplitude of Low - Frequency Fluctuation (ALFF), Fractional ALFF (fALFF), Gragner causality, degree centrality, voxel - mirrored homotopic connectivity (VMHC) and perform statistical aAnalysis Toolkit (REST) is a convenient toolkit to calculate Functional Connectivity (FC), Regional Homogeneity (ReHo), Amplitude of Low - Frequency Fluctuation (ALFF), Fractional ALFF (fALFF), Gragner causality, degree centrality, voxel - mirrored homotopic connectivity (VMHC) and perform statistical analysisanalysis.

Our analysis shows, as you allude to, that the RCS tree - ring reconstructions appear to be doing quite well at the low - frequency.

This introduces trends and low - frequency variations in analyses that are mixed with the true climatic signals.

You have dt and N, multiply N * dt, and you get the timebase, or the lowest frequency possible (1 / (N * dt)-RRB- from your analysis (zero frequency is just the mean of the time series, if you first haven't taken out the mean).

For example: Comparison of trends and low - frequency variability in CRU, ERA - 40, and NCEP / NCAR analyses of surface air temperature, Simmons et al, JGR 2004

«By avoiding the (calibrating) instrumental period, and by using a fairly robust spectral measure for low - frequency performance, the above coherence analysis has uncovered several inconsistencies among the group of millennial reconstructions that figured prominently in the latest IPCC report and elsewhere.

The analysis has shown that this same modification produces a more focused spectral peak in the intraseasonal band where the MJO should reside, but also reduces spurious low - frequency variable outside the intraseasonal band that is not observed in nature.

A hypothesized low - frequency climate signal propagating across the Northern Hemisphere through a network of synchronized climate indices was identified in previous analyses of instrumental and proxy data.

Abstract: A hypothesized low - frequency climate signal propagating across the Northern Hemisphere through a network of synchronized climate indices was identified in previous analyses of instrumental and proxy data.

However, for the above model analysis, I have explicitly removed the 61 year cycle (and other higher frequency data) in order to examine the low frequency data, so I do not feel that your explanation is a likely explanation of the variance.

This graph displays the close connection between the global angular momentum of the atmosphere derived from wind analyses (darker red curve, scale on right) and the observed changes in the length of day (lighter green curve, scale on left), after removing low frequencies, for the years 2000/2001.

«Because of the presence of low - frequency variations (e.g., multi-decadal variations seen in some tidal gauge records; Chambers et al. (2012)-RRB-, sea level acceleration results are sensitive to the choice of the analysis time span.

Previous analyses of Coppermine and Thelon ring - width data, in combination with ring width data from 2 other sites in the western NWT (R. Wilson unpublished report, 2005; D'Arrigo et al., 2006) revealed that the Regional Curve Standardization (RCS) method, a potentially useful technique for retaining centennial - scale climatic trends in tree rings (Briffa et al., 1992; Cook et al., 1995; Esper et al., 2002), did not appear to preserve any additional low - frequency information at these sites when compared to more traditional techniques.

The present analysis was aimed at variability of the ionospheric F2 - layer critical frequency foF2 and peak height hmF2 above middle latitudes under low solar activity conditions.

Our analysis was aimed at variability of the ionospheric F2 - layer critical frequency foF2 and peak height hmF2 above middle latitudes under low solar activity conditions.

c) Average sunspot number prediction by a low - frequency modulation model (dotted curve) based on frequency analysis from sunspot and cosmogenic isotope records, compared to the average sunspot number since 1750 (continuous curve).

If there is a process in the Berkley regional analysis that preserves low frequency from the original data, what is it?

From where comes the low - frequency original data to control the results of the analysis?

I have had theoretical reasons, and now you supply test data analysis, that there is wholesale decimation and counterfeiting of low frequency information in the BEST process.

But until I see a peer - discussion of how real low frequency content is returned to the final analysis, I think we should treat the low frequency content as counterfeit — it might look real, but the broken chain of custody harms their case.

CCA chose not review «A Cooperative Measurement Survey and Analysis of Low Frequency and Infrasound at the Shirley Wind Farm in Brown County, Wisconsin».

«Working with data pertaining to 7450 cardiovascular - related deaths that occurred within Budapest, Hungary, between 1995 and 2004 — where the deceased were «medico - legally autopsied» — Toro et al. looked for potential relationships between daily maximum, minimum and mean temperature, air humidity, air pressure, wind speed, global radiation and daily numbers of the heart - related deaths... scientists report and restate their primary finding numerous times throughout their paper, writing that (1) «both the maximum and the minimum daily temperatures tend to be lower when more death cases occur in a day,» (2) «on the days with four or more death cases, the daily maximum and minimum temperatures tend to be lower than on days without any cardiovascular death events,» (3) «the largest frequency of cardiovascular death cases was detected in cold and cooling weather conditions,» (4) «we found a significant negative relationship between temperature and cardiovascular mortality,» (5) «the analysis of 6 - hour change of air pressure suggests that more acute or chronic vascular death cases occur during increasing air pressure conditions (implying cold weather fronts),» (6) «we found a high frequency of cardiovascular death in cold weather,» (7) «a significant negative relationship was detected between daily maximum [and] minimum temperature [s] and the number of sudden cardiovascular death cases,» and (8) «a significant negative correlation was detected between daily mean temperature and cardiovascular mortality.»

How about the lower Nquist limit on frequency analysis so overlooked by those who draw straight «trend» lines.

Designed auto - trading strategies for foreign currencies, futures and options based on Technical Analysis, Fundamental Analysis and Quantitative Analysis with historical data for the purpose of making stable, extremely low risk return with high frequency trading

• Solid background in low / high power, radio - frequency RF / Analog circuit design and analysis • Experienced in wireless communication system analog front end and transmitter architecture, parameter selection, especially circuit design such as Power Amplifier, Mixer (MODULATOR), LPF (low Pass Filter) PGA (programmable Gain Amplifier), VCO, Low noise amplifiers, DC offset cancellation, AGC, etc for use with RF ASIC designs •low / high power, radio - frequency RF / Analog circuit design and analysis • Experienced in wireless communication system analog front end and transmitter architecture, parameter selection, especially circuit design such as Power Amplifier, Mixer (MODULATOR), LPF (low Pass Filter) PGA (programmable Gain Amplifier), VCO, Low noise amplifiers, DC offset cancellation, AGC, etc for use with RF ASIC designs •low Pass Filter) PGA (programmable Gain Amplifier), VCO, Low noise amplifiers, DC offset cancellation, AGC, etc for use with RF ASIC designs •Low noise amplifiers, DC offset cancellation, AGC, etc for use with RF ASIC designs •...

RMSSD is sensitive to high - frequency heart period fluctuations in the respiratory frequency range and is used as an index of vagal cardiac control.3) In the frequency - domain analysis, the power spectra of three frequency bands are calculated: very low frequency (VLF; 0.005 - 0.040 Hz), low frequency (LF; 0.04 - 0.15 Hz), high frequency (HF; 0.15 - 0.40 Hz), and total power (TP), including VLF, LF, and HF.1) For the non-linear complexity measure, the approximate entropy (ApEn) is calculated.4) The ApEn is a parameter that was developed to quantify the degree of regularity versus unpredictability in a higher dimensional attractor reconstructed from a time series, such as the instantaneous heart rate time series.5, 6) A lower ApEn value reflects a higher degree of regularity, and the higher the entropy value, the more unpredictable the time series.5, 6)

The time - domain analysis (the standard deviation of all RR intervals [SDNN] and the square root of the mean squared differences of successive normal sinus intervals [RMSSD]-RRB-, the frequency - domain analysis (very low frequency, low frequency [LF], high frequency [HF], and total power [TP]-RRB-, and a non-linear complexity measure the approximate entropy were computed.

The frequency of missing data was 5 % for Aboriginal and Torres Strait Islander status, with lower frequencies for all other items justifying a complete - case analysis.

As with lower marital satisfaction, based on linear regression analyses, the association between stressful life events and infections showed that prenatal stressful life events predicted both higher frequency and a greater variety of infectious diseases during the first year of life.