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214 results for “amplitude”
Pulse amplitude modulated (PAM) 5-minute chlorophyll fluorescence (ChlF) with accompanying environmental variables from the GCE-LTER Keenan Field site on Sapelo Island, GA in July 2020
Pulse amplitude modulated (PAM) chlorophyll fluorescence (ChlF) from July 11, 2020 to July 27, 2020 collected over a Spartina alterniflora marsh located on the western side of Sapelo Island bounded by the Duplin River. PAM ChlF were processed in WinControl-3.25. Additional biophysical variables included are photosynthetically active radiation (PAR) from onsite quantum sensors (Licor-192), and tide height from an onsite pressure transducer (Hobo U20).
Finite amplitude sound propagation effects in volume backscattering measurements for fish abundance estimation
<p>The upload contains measurement and simulation data for finite-amplitude sound propagation effects in volume backscattering measurements. The experimental data are from a trawl survey conducted in the North Sea with R/V "G. O. Sars", 6-7 November 2004, passing several times over a group of Atlantic mackerel schools. The measurements are of the relative area backscattering coefficient, relative to 38 kHz, 2000 W power setting, at</p> <p>(1) 120 kHz with 250 W transmit power setting, 200 kHz with 120 W transmit power setting<br> (2) 120 kHz with 1000 W power setting, 200 kHz with 1000 W power setting.</p> <p>A Simrad EK60 echosounder system was used, alternating between the low (1) and high (2) power settings through the measurement series.</p> <p>The corresponding simulation data are calculated using the Bergen Code numerical solver of the KZK Equation. The medium parameters input to the simulations are based on CTD data from the field survey . The transducer and amplitude data were found by laboratory measurements on echo sounders of the same type as used in the survey.</p> <p>.m files are included for both .mat data files, with details on how to read the data.</p> <p>An article describing the data has been submitted by the authors to Acta Acustica, 2022.</p>
The 2001 Hawaiian Ocean Mixing Experiment (HOME): Internal-tide Mode-1 Amplitude Data from the Southern Tomographic Array
<p>Ocean acoustic tomography was used to measure tides in the farfield of the Hawaiian Ridge in 2001 during the Hawaiian Ocean Mixing Experiment (HOME). The measurements were components of a suite of large- and small-scale measurements obtained during HOME with the aim of illuminating the pathways of tidal energy that may be driving deep-ocean mixing. Using reciprocal transmissions, the tomographic arrays were designed to measure the radiation of mode-1 internal tides from the Ridge, together with barotropic tidal currents. This publication makes available the tomographic estimates for mode-1 internal-waves derived<br>from the six paths of the southern HOME tomography array.</p>
The 2001 Hawaiian Ocean Mixing Experiment (HOME): Internal-tide Mode-1 Amplitude Data from the Northern Tomographic Array
<p>Ocean acoustic tomography was used to measure tides in the farfield of the Hawaiian Ridge in 2001 during the Hawaiian Ocean Mixing Experiment (HOME). The measurements were components of a suite of large- and small-scale measurements obtained during HOME with the aim of illuminating the pathways of tidal energy that may be driving deep-ocean mixing. Using reciprocal transmissions, the tomographic arrays were designed to measure the radiation of mode-1 internal tides from the Ridge, together with barotropic tidal currents. This publication makes available the tomographic estimates for mode-1 internal-waves derived<br>from the six paths of the northern HOME tomography array.</p>
HYCOM mode 1 steric SSH M2 amplitude and phase
<p>This data set contains data from a forward global HYCOM simulation (22.1) with realistic tide and atmospheric forcing as discussed in <a href="https://doi.org/10.1016/j.ocemod.2020.101656">https://doi.org/10.1016/j.ocemod.2020.101656</a> (On the interplay between horizontal resolution and wave drag and their effect on tidal baroclinic mode waves in realistic global ocean simulations, 2020, MC Buijsman, GR Stephenson, JK Ansong, BK Arbic, JAM Green, ... Ocean Modelling 152, 101656). <strong>Please cite this article when using these data. </strong></p> <p>This is a 4-km simulation with 41 layers. All data is on the native tripole grid. Data is stored as netcdf4 classic. The 2D data sets are 7055 x 9000 (lat x lon).</p> <p>The data set contains</p> <ol> <li>the M2 mode 1 complex amplitude (RE+i*IM) of steric SSH computed for a two-week time series; the phase is relative to GMT 01-Sep-2016 01:00:00; the mode-1 amplitude is computed from the mode-1 surface pressure value (see <a href="https://doi.org/10.1016/j.ocemod.2020.101656">https://doi.org/10.1016/j.ocemod.2020.101656</a>). </li> <li>Mode-1 eigenspeed</li> <li>Positive seafloor depth, and latitude and longitude coordinates</li> </ol> <p>To convert eigenspeed to wavelength, phase speed and group speed, see <a href="https://doi.org/10.1016/j.ocemod.2020.101656">https://doi.org/10.1016/j.ocemod.2020.101656</a></p> <p><a href="https://sites.google.com/site/maartenbuijsman/">https://sites.google.com/site/maartenbuijsman/</a></p>
Amplitude of seasonal cycles of vegetation at global scale AVHRR
<p>Using the AVHRR product provided by NOAA, the NDVI time series has been calculated, a periodogram has been made to study different factors that affect the periodicity of the vegetative cycles. In this case, the amplitude of the cycles.</p>
Source Data for Manuscript "Sodium salicylate improves detection of amplitude-modulated sound in mice"
<p>This repository contains the source data for our papers <strong>Sodium salicylate improves detection of amplitude-modulated sound in mice </strong>(van den Berg*, Wong*, Houtak, Williamson, Borst). The code to generate figure panels can be found in our github repository at https://github.com/aaronbwong/salicylateonam</p>
Investigating the universality of five-point QCD scattering amplitudes at high energy
<p>We provide various analytic results for one- and two-loop five-point QCD scattering amplitudes in multi-Regge kinematics (MRK).<br>If you use the results distributed with this repository in your research work, please cite <a href="https://arxiv.org/abs/2411.14050">2411.14050</a>.<br><br>This repository contains two archives:</p> <ol> <li><strong>mrk_results.tar.gz</strong>: all the analytic results in Mathematica readable format are collected here. For a detailed description of their content and the notation adopted see README file in this archive.<br><br></li> <li><strong>expansions_n4lp.tar.gz</strong>: in this archive the expansions of the one- and two-loop massless pentagon functions up to N^4LP are provided (see section 2 of the <a href="https://arxiv.org/abs/2411.14050">paper</a> for a detailed description of the beyond leading-power expansion). Different expansions are performed in the upper and lower z-complex plane (see section of 2 of the <a href="https://arxiv.org/abs/2411.14050">paper</a>). It further contains a Mathematica script, README.wl, which serves both as a description and example file.</li> </ol>
An 18.9-minute Blue Large-Amplitude Pulsator Crossing the ''Hertzsprung Gap'' of Hot Subdwarfs
<p>This record contains the data of spectra and photometry used for the paper <strong><em>An 18.9-minute Blue Large-Amplitude Pulsator Crossing the ''Hertzsprung Gap'' of Hot Subdwarfs</em></strong>.</p> <p><strong>LRIS_TMTS-BLAP-1.[0-3].spec </strong>- LRIS spectra of TMTS-BLAP-1;</p> <p><strong>ZTF_[r,g]_[TMTS-BLAP-1,ZGP-BLAP-09].dat </strong>- Reduced ZTF r-/g-band light curves of TMTS-BLAP-1/ZGP-BLAP-09. The raw data were provided by NASA/IPAC Infrared Science Archive (<a href="https://irsa.ipac.caltech.edu">https://irsa.ipac.caltech.edu</a> );</p> <p><strong>ATLAS_[o,c]_[TMTS-BLAP-1,ZGP-BLAP-09].dat</strong> - Reduced ATLAS o-/c-band light curves of TMTS-BLAP-1/ZGP-BLAP-09. The raw data were obtained from ATLAS forced photometry server (<a href="https://fallingstar-data.com/forcedphot">https://fallingstar-data.com/forcedphot</a>);</p> <p><strong>[TMTS, SNOVA]_[202xxxxx]_TMTS-BLAP-1.dat</strong> - Reduced high-cadence photometry of TMTS-BLAP-1 obtained from TMTS or SNOVA</p> <p><strong>[HeB, preWD]_tracks.zip - </strong>Evolutionary tracks for helium-burning stars / pre-WDs</p> <p><strong>TMTS-BLAP-1_simulated_spectra.zip</strong> - A compressed package for four simulated spectra of TMTS-BLAP-1</p>
Supplementary Document to "Design Guidelines and Applications for Dual-Band Rat-Race Couplers and Gysel Power Dividers with Unequal Amplitude Imbalances"
<p>This document presented additional results generated using a CAD application [1] developed for the submitted paper [2]. The CAD application is freely available under Creative Commons Attribution 4.0 International. The application can be downloaded from https://zenodo.org/records/11199141.</p> <p>REFERENCES<br>[1] R. Sinha, “Single/ Dual band Rat-race Coupler and Gysel Power Divider with unequal power division ratio,” May 2024. [Online]. Available:<br>https://doi.org/10.5281/zenodo.11199141<br>[2] ——, “Design guidelines and application of dual-band rat-race couplers and Gysel power dividers with unequal amplitude imbalances [application notes],”<br>IEEE Microwave Magazine, vol. vv, no. nn, p. pp, 2024.</p>
Correlator data for determination of the I=1 pion-pion scattering amplitude and timelike pion form factor from Nf=2+1 lattice QCD
<p>Bootstrap samples of all correlation functions involved in the analysis of pion-pion scattering data and the timelike pion form factor described in "The I =1 pion-pion scattering amplitude and timelike pion form factor from N f = 2 + 1 lattice QCD". Additionally, an analysis file is provided for each ensemble which stored the analysis choices made in that work. These data are intended for use with the Jupyter notebook located in https://github.com/ebatz/jupan, which provides an interface. This notebook performs the entire analysis chain discussed in the above paper. </p>
Dry run for Eclipse data gathering. Method, Doppler and amplitude vs time
<p>The station here is setup to receive two frequencies simultaneously. SpectrumLab is setup to do simultaneous FFT calculations and tabulate Doppler Shift and signal amplitude data for each frequency. The radio used is a K3 in the CW mode with AGC off. The main and subrx of the K3 are identical and phase locked. The antenna is a multiband Vee antenna facing north averaging 15' high. FFT parameters are adjusted for a bin width of 0.186 Hz with the SL peak detection algorithm turned on to determine the peak frequency within the bin. 75% overlap. A data point is obtained every 1.3 seconds. Doppler shift is determined via the heterodyne method differencing the station pitch and the reference oscillator (offset in freq). Both oscillators are locked to a Rubidium standard.</p> <p>The attached plots are the station setup, Doppler shifts for CHU 14670 kHz and 15000 kHz, and the amplitudes of each. </p> <p> </p>
Occasive Amplitude
<p>Second place winner in the 2023 IAU OAE Astrophotography Contest, category Still images of sunrise and sunset locations over the year: Occasive Amplitude, by Marcella Giulia Pace.</p> <p>Captured from Gatto Corvino village in Sicily, this composite showcases the Sun setting at various points over the sea from the winter to the summer solstice (2016–2017). The centre frame marks due west. As Earth orbits the Sun, the position of the setting (and rising) Sun changes from being northward of due west (east) in summer to southward of due west (east) in winter. During the equinoxes — when day and night are of equal length — the Sun rises directly in the east and sets directly in the west. The changing location of the Sun on the horizon is due to Earth’s axial tilt as it orbits the Sun. In temperate regions of Earth, the Sun’s height above the horizon at noon is at its highest and lowest points in the sky on the summer and winter solstices respectively.</p> <p>Credit: Marcella Giulia Pace/IAU OAE (<a href="https://creativecommons.org/licenses/by/4.0/legalcode">CC BY 4.0</a>)</p>
Amplitude and phase preliminary tests
<p>Simulation results for amplitude and phase apodization with a Gaussian amplitude layer.</p> <p>Grant project no. 2021/41/N/ST7/01520 (<span>Narodowe Centrum Nauki)</span></p>
Database of Short Large-Amplitude Magnetic Structures (SLAMS) detected by spacecraft 1 of the Cluster mission in the foreshock of Earth
<p>Database of Short Large-Amplitude Magnetic Structures (SLAMS) detected in the foreshock of Earth by spacecraft 1 of the Cluster mission between the years 2002-2012.</p> <p>An automated algorithm has been used for SLAMS identification followed by a manual verification process to remove bow shock oscillations and other false detections. SLAMS have been defined to have an amplitude of at least two times the background magnetic field. </p> <p>More details on the creation of the database are given in the following publication:</p> <p><span><span lang="EN-US">Bergman, S.</span></span><span lang="EN-US">, Karlsson, T., Wong Chan, T. K., & Trollvik, H. (2025). Statistical properties of Short Large</span><span lang="EN-US">‐</span><span lang="EN-US">Amplitude Magnetic Structures (SLAMS) in the foreshock of Earth from Cluster measurements. <em>Journal of Geophysical Research: Space Physics</em>, 130. </span><a href="https://doi.org/10.1029/2024JA033568"><span lang="EN-US">https://doi.org/10.1029/2024JA033568</span></a></p> <p>Contact: S. Bergman, sofiabergmanphd@gmail.com </p>
Dataset for 'Intraocular scatter compensation with spatial light amplitude modulation for improved vision in simulated cataractous eyes'
<p>Dataset for the manuscript entitled: Intraocular scatter compensation with spatial light amplitude modulation for improved vision in simulated cataractous eyes</p> <p>includes:</p> <p>1) PSF from numerical simulations</p> <p>2) CSF measured in subjects</p> <p>3) Michelson contrast from numerical simulations</p>
Numerical Evaluation of Spin Foam Amplitudes beyond simplices
<p>Dataset containing intertwiners and vertex amplitude evaluations for cuboid and frustum data associated with the paper arXiv:2201.09902.</p> <p>Data comes in two groups, one for cuboid boundary data, one for frustum boundary data of the coherent vertex amplitude.</p> <p>Intertwiner data are stored as text files, where the name of the files contain the three representations necessary to specify either cuboid or frustum intertwiners.</p> <p>Folders results contain the evaluations of vertex amplitudes. Again, the files contain all representations necessary to specify the hypercuboid (six representations) or hyperfrustum (three representations). See the paper for more details.</p> <p>(To get the actual values of the spins, they need to be devided by 2.)</p> <p>Code to automatically read in the intertwiner files and compute the vertex amplitude can be found at: https://github.com/CourtA96/SpinfoamAmplitudesOfCuboidsAndFrustra</p>
A rapidly evolving high-amplitude δ Scuti star crossing the Hertzsprung Gap
<p>The datasets includes the work folder which we used in the paper to construct the evolutionary models based on MESA (r15140).</p>
Dataset: Amplitude, Inc. (AMPL) Stock Performance
This dataset provides historical stock market performance data for specific companies. It enables users to analyze and understand the past trends and fluctuations in stock prices over time. This information can be utilized for various purposes such as investment analysis, financial research, and market trend forecasting.
Dataset: Amplitude, Inc. (AMPL) Stock Performance
This dataset provides historical stock market performance data for specific companies. It enables users to analyze and understand the past trends and fluctuations in stock prices over time. This information can be utilized for various purposes such as investment analysis, financial research, and market trend forecasting.
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These curated guides explain access requirements, typical timelines, costs, and reuse considerations for widely used research datasets.
Allen Brain Atlas
Allen Brain Atlas is an Allen Institute collection of brain map atlases, datasets, APIs, and analysis tools covering mouse, human, and non-human primate brain resources.
Annotated Behaviour and Observability Dataset (ABODe)
ABODe is a University of Edinburgh DataShare dataset for behavior classification in group-housed mice using home-cage video, identities, bounding boxes, ground-plate positions, and annotator labels.
DANDI Archive for NWB datasets
DANDI is a BRAIN Initiative archive for publishing and sharing neurophysiology data, including electrophysiology, optophysiology, and behavioral data packaged as NWB and related standards.
International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.