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2,649 results for “optics”
The impulse response of optic flow sensitive descending neurons to roll m-sequences
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Centroid values of aerosol optical properties for 8 sub-types based in AERONET inversion data (1993–2018)
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Erora opisena optical and tomography data and associated MATLAB scripts
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Data from: When can we detect lianas from space? Towards a mechanistic understanding of liana-infested forest optics
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Assessing controls on cross-shelf phytoplankton and suspended particle distributions using repeated bio-optical glider surveys
The data were collected from an oceanographic glider in the coastal Santa Barbara Chanel, CA during six deployments from March 2012 to June 2013. Data includes 404 cross-shelf sections of temperature (C), salinity (PSU), colored dissolved organic material (CDOM, volts; dark-corrected), particulate backscatter (bbp at 650nm, m-1) and Chlorophyll fluorescence (chl-fl, volts; dark-corrected). Each section is 35x40 in size (35 depth measurements x 40 latitude measurements about 100m apart). They were obtained from kriging of raw sections every 100m in latitude and 2m in depth. Longitude is constant at -119 44.824. Matlab files are indexed to each of the glider sections (1-404). Data are described in Hendrikx Freitas, F., D. A. Siegel, L. Washburn, S. Halewood and E. Stassinos. 2016. Assessing controls on cross-shelf phytoplankton and suspended particle distributions using repeated bio-optical glider surveys. Journal of Geophysical Research - Oceans, 121: 7776-7794. Doi: 10.1002/2016JC011781 Definition of the variables in the matlab file: Times are in matlab time. Gtime is the average timestamp of each glider section (first column = time; second column = mission number it belongs to). Gdurationanddirection is useful to know how long (in time) each section actually is, and what direction it started with (inshore-offshore or offshore-inshore). Gvel are the depth-averaged velocities obtained from the glider (columns are time, lat, lon, alongshore component of currents, cross-shore component of currents, mission number). Chl in mg/m3 = 0.0159*(dark corrected chl counts)-0.0165); N=9; r=0.82 (p-value<0.05). bbp in 1/m units and it was the optical backscatter data that were converted to particulate backscattering following standard algorithms.
All-optical Supercontinuum Switching (data and postprocessing script)
<p>Data archive for the article</p> <p>"All-optical Supercontinuum Switching"</p> <p>Oliver Melchert (1,2,3), Carsten Brée (4), Ayhan Tajalli (2), Alexander Pape (2), Rostislav Arkhipov (5), Stephanie Willms (1,2), Ihar Babushkin (1,2), Dmitry Skryabin (6), Günter Steinmeyer (7,8), Uwe Morgner (1,2,3), and Ayhan Demircan (1,2,3)</p> <p>1. Cluster of Excellence PhoenixD, Welfengarten 1, 30167, Hannover, Germany<br> 2. Institute of Quantum Optics, Leibniz University Hannover, Welfengarten 1 30167, Hannover, Germany<br> 3. Hannover Centre for Optical Technologies, Nienburgerstr. 17, 30167, Hannover, Germany<br> 4. Weierstraß Institute for Applied Analysis and Stochastics, Mohrenstraße 39, 10117 Berlin, Germany<br> 5. St. Petersburg State University, Universitetskaya nab. 7/9, St. Petersburg 199034, Russia<br> 6. Department of Physics, University of Bath, Bath, BA2 7AY, UK<br> 7. Max-Born-Institute (MBI), Max-Born-Str. 2a, 12489 Berlin<br> 8. Institut für Physik, Humboldt-Universität zu Berlin, Newtonstraße 15, 12489 Berlin, Germany</p> <p>This repository contains data from an experiment and numerical simulations, allowing to reproduce a draft version of Figure 2 of the article.</p>
Optical projection tomography images of Invitrogen™ beads
<p>Optical projection tomography (OPT) dataset from samples consisting of optical beads embedded in hydrogel.</p> <p>Used beads were commercially available from Thermo Fischer Scientific Inc.: Invitrogen™ Countbright™ (catalog number F8844) and Invitrogen™ FluoSpheres 505/515 (catalog number C36950). Beads were prepared in 2\% agarose gel and placed inside fluorinated ethylene propylene tube having inside diameter of 1 mm.</p>
dataset for the publication Optical investigation of Eu3+ doped Bi12GeO20 (BGO) crystals
<p>dataset of the publication Optical investigation of Eu<sup>3+</sup> doped Bi<sub>12</sub>GeO<sub>20</sub> (BGO) crystals</p>
Dataset related to the publication "Optical modulation of coherent phonon emission in optomechanical cavities", DOI: 10.1063/1.5040061
<p>This folder contains the raw data from which the graphs in paper "Optical modulation of coherent phonon emission in optomechanical cavities", DOI: 10.1063/1.5040061, have been obtained.</p> <p> </p>
All Luminosity Templates Associated with "Classifying Single Stars and Spectroscopic Binaries Using Optical Stellar Templates"
<p>Zip files for the luminosity normalized individual stellar templates, and all combinations of SB2 templates. The templates are in fits format. The first table extension contains the template (wavelength, luminosity, variance, error). These luminosity templates have units of erg /s /angstrom.</p>
Dataset in "Marine Sediment Characterized by Ocean-Bottom Fiber-Optic Seismology" by Spica et al., 2020 in Geophysical Research Letters
<p>3000fullhisy: raw data to reproduce Fig. 2<br> ppsdspec.npz: all spectrogram as shown in Fig. 3a<br> AllVelMods: All velocity model shown in Fig. 3b<br> ac.out.final.npz: auto-correlation image in Fig. 3c<br> DAS11_lpf5.stack51.grd: Earthquake wavefield as shown in Fig. 3d</p>
The simulated dataset associated with the paper "Mesoscale modelling of optical turbulence in the atmosphere: The need for ultrahigh vertical grid resolution"
<p>The WRF model-generated meteorological profiles are available in netcdf format. More information will be provided shortly. </p>
Data: Search and Rescue with Airborne Optical Sectioning
<p>This dataset supports the finding of our study "Search and Rescue with Airborne Optical Sectioning".</p> <p>Abstract: We show that automated person detection under occlusion conditions can be significantly improved by combining multi-perspective images before classification. Here, we employed image integration by Airborne Optical Sectioning (AOS)---a synthetic aperture imaging technique that uses camera drones to capture unstructured thermal light fields---to achieve this with a recall of 93%. Finding lost or injured people in dense forests is not generally feasible with thermal recordings, but becomes practical with use of AOS integral images. Our findings lay the foundation for effective future search and rescue technologies that can be applied in combination with autonomous or manned aircraft.<br> </p>
The anisotropy in the optical constants of quartz crystals for soft X-rays
<p>The refractive index of a y-cut SiO2 crystal surface is reconstructed from polarization dependent soft X-ray reflectometry measurements in the energy range from 45 eV to 620 eV. In the datasets the 1-delta and beta values for the (100) and (001) direction of the SiO2 crystal for the different energies are provided.</p>
Dataset for Hyperbolic Optical Metamaterials from Shear-Aligned Block Copolymer Cylinder Arrays
<p>Research Data supporting “Hyperbolic Optical Metamaterials from Shear-Aligned Block Copolymer Cylinder Arrays”</p> <p>Published in Advanced Photonics Research</p> <p>doi: 10.1002/adpr.202000037</p>
Bidirectional Electro-Optic Wavelength Conversion in the Quantum Ground State
<p>This dataset comprises all data shown in the plots of the main part of the submitted article "Bidirectional Electro-Optic Wavelength Conversion in the Quantum Ground State". Additional raw data are available from the corresponding author on reasonable request.</p>
Optical signal dataset
<p>This dataset comprise the BIOCDx experimental raw data results, from the photodiodes of the measuring system. More specifically, the the photocurrent raw-data from the photodiodes after passing through the photonic structures and translated into power intensity or voltage over samples in the wavelength range which has been chosen.</p>
Gradients2-MGL1704-LISST-ACS-ECO-Optics_2020-04-01_v1.0
<p>Cruise: Gradients 2, MGL1704</p> <p>Project Name: Simons Foundation, Gradients NPSG</p> <p>Dataset Description:</p> <p>Three biooptical instruments were plumbed to the underway uncontaminated seawater on the R/V Langseth. Data for each instrument were averaged to the minute and matched to a timestamp on the minute. LISST: Filtered values (<0.2 um) removed from all data. The summed volume concentration of particles (in uL/L), the standard LISST output, is presented for 3 size ranges: 1.25-2 µm, 2-20 µm, and 20-100 µm. Particle volume concentration can be converted to particle concentration by assuming spherical particles. The total particle concentration (#/L) is calculated for particles with a diameter between 1.25 and 100 um. Larger size classes are excluded due to low detection limits and scattering at density gradients. Note that data have not been processed to remove outliers. AC-S: Filtered values (<0.2 um) removed from all data (see White et al., 2017, GRL); data corrected for residual temperature and scattering; AC-S chl a concentrations obtained from a Gaussian fit over absorbance spectra in the red portion of the spectrum, assuming in vivo chl-a specific absorption of 0.0203 m2/mg at 674 nm. ECO: filtered values (<0.2 um) removed from chl and volume scattering data; chl fluorescence converted to mg/m3 using factory calibrations, and corrected to HPLC chlorophyll values (Corrected value = uncorrected/2.0808). CDOM not included due to faulty channel.</p>
Data for 'Ultrafast strain engineering and coherent structural dynamics from resonantly driven optical phonons in LaAlO3'
<p>This folder contains all the raw data required to generate the figures in the work 'Ultrafast strain engineering and coherent structural dynamics from resonantly driven optical phonons in LaAlO3'. </p> <p> </p> <p><strong>Contents</strong></p> <p><em>Figure 2:</em></p> <p>(a) Time resolved balanced reflection data for the short and long time periods: LongTimeData.txt and ShortTimeData.txt. The corresponding Fourier spectra shown in the inset: InsetFourier_LongTimeData.txt and InsetFourier_ShortTimeData.txt</p> <p>(b) Time resolved polarization rotation data for the short and long time periods: LongTimeData.txt and ShortTimeData.txt. The corresponding Fourier spectra shown in the inset: InsetFourier_LongTimeData.txt and InsetFourier_ShortTimeData.txt</p> <p><em>Figure 3:</em></p> <p>(a) Time-resolved polarization rotation data after excitation at two different pump photon energies: trace_85meV_excitation.txt and trace_124meV_excitation.txt. Amplitude as function of central pump photon energy: Inset_Wavelength_dependence.txt and the absorption of LaAlO3: Inset_absorption.txt</p> <p>(b) The raw data for different polarizations: traces_angle_dependence.txt</p> <p>(c) The experimentally obtained (AmplitudeExperiment.txt) and DFT calculated values (AmplitudeDFT.txt).</p> <p><em>Figure 4</em></p> <p>(a) Fourier spectra (and double Gaussian fit) corresponding to time-resolved measurments after excitation at different central photon energies: FourierSpectraData.txt (and FourierSpectraFits). Inset: Extracted peak amplitude (Inset_StrainvsWavelength.txt) and Gaussian fit of the TA strain (Inset_GaussianFit.txt). </p> <p>(b)The TA/LA ratio as function of pump photon energy (SoundWaveRatio.txt) and the Lorentzian fit (RatioFit.txt). And the absorption of LaAlO3 (Absorption_coefficient.txt).</p> <p> </p> <p> </p> <p> </p> <p> </p>
Figure data for the paper: "Spectral Observations of Optical Emissions Associated with Terrestrial Gamma-Ray Flashes"
<p>This repository contains 13 files with data which were used to produce the figures in the paper "Spectral Observations of Optical Emissions Associated with Terrestrial Gamma-Ray Flashes" by Heumesser et al. The description of the different files is included in the supporting information of the paper and additionally uploaded here, see "2020GL090700_OpticalEmissionsAssociatedwithTGFs_SupportingInformation".</p>
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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.