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2,107 results for “Spectrum”

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nasa12/100

VG2 NEP PWS RESAMPLED SUMMARY SPECTRUM ANALYZER 48SEC V1.0

This data set consists of 48-second calibrated, averaged wave electric field intensities from the Voyager 2 Plasma Wave Receiver spectrum analyzer obtained in the vicinity of the Neptunian magnetosphere. For each 48-second interval, a geometric average field strength is determined for each of the 16 spectrum analyzer channels whose center frequencies range from 10 Hertz to 56.2 kiloHertz and which are logarithmically spaced in frequency, four channels per decade. The time associated with each set of averages is the beginning of the averaging interval. Averages are stored in units of volt/meter. During data gaps where complete 48-second intervals are missing, no entries exist in the file, that is, the gaps are not zero-filled or tagged in any other way. Additional information about this dataset and the instrument which produced it can be found elsewhere in this catalog. An overview of the data in this data set can be found in Gurnett et al. [1989] and a complete instrument description can be found in Scarf and Gurnett [1977].

restrictednotspecifiedMar 2025View details →
nasa12/100

Voyager 2 Plasma Wave Subsystem (PWS), 16-Channel Spectrum Analyzer Data

This data set contains Voyager 2 Plasma Wave Subsystem (PWS) electric field 16-channel Spectrum Analyzer (SA) data for the entire mission in calibrated CDF files. As of the release date new data are accumulating.

restrictednotspecifiedAug 2025View details →
nasa12/100

FIELD EXP E SIRIS RESAMP REDUCED DATA RECORD SPECTRUM V1.0

The SIRIS measurement objectives were: 1) to measure reflectance spectra of a bright and dark target at each GRSFE site for potential use in AVIRIS calibration characterize selected sites at the GRSFE modeling site (Lunar Lake, NV) using visible/infrared reflectance reflectance spectra for selected endmember materials at each of the GRSFE sites inter-instrument calibration.

restrictednotspecifiedApr 2025View details →
nasa12/100

VG2 URA PWS RESAMPLED SUMMARY SPECTRUM ANALYZER 48SEC V1.0

This data set consists of 48-second calibrated, averaged wave electric field intensities from the Voyager 2 Plasma Wave Receiver spectrum analyzer obtained in the vicinity of the Uranian magnetosphere. For each 48-second interval, a geometric average field strength is determined for each of the 16 spectrum analyzer channels whose center frequencies range from 10 Hertz to 56.2 kiloHertz and which are logarithmically spaced in frequency, four channels per decade. The time associated with each set of averages is the beginning of the averaging interval. Averages are stored in units of volt/meter. During data gaps where complete 48-second intervals are missing, no entries exist in the file, that is, the gaps are not zero-filled or tagged in any other way. Additional information about this dataset and the instrument which produced it can be found elsewhere in this catalog. An overview of the data in this data set can be found in Gurnett et al. [1986] and a complete instrument description can be found in Scarf and Gurnett [1977].

restrictednotspecifiedMar 2025View details →
nasa12/100

VG2 URA PWS EDITED RDR UNCALIB SPECTRUM ANALYZER 4SEC V1.0

This data set consists of 4-second edited, wave electric field intensities from the Voyager 2 Plasma Wave Receiver spectrum analyzer obtained in the vicinity of the Uranian magnetosphere. For each 4-second interval, a field strength is determined for each of the 16 spectrum analyzer channels whose center frequencies range from 10 Hertz to 56.2 kiloHertz and which are logarithmically spaced in frequency, four channels per decade. The time associated with each set of intensities (16 channels) is the time of the beginning of the scan. During data gaps where complete 4-second spectra are missing, no entries exist in the file, that is, the gaps are not zero-filled or tagged in any other way. When one or more channels are missing within a scan, the missing measurements are zero-filled. Data are edited but not calibrated. The data numbers in this data set can be plotted in raw form for event searches and simple trend analysis since they are roughly proportional to the log of the electric field strength. Calibration procedures and tables are provided for use with this data set described below.

restrictednotspecifiedMar 2025View details →
nasa12/100

ISEE 1 Plasma wave experiment (PWE) Spectrum Analyzer

'The ISEE-1 and -2 Plasma Wave Investigation' D. A. Gurnett, F. L. Scarf, R. W. Fredricks, and E. J. Smith, IEEE Transactions on Geoscience Electronics, Vol. GE-16, p. 225-230, 1978. The International Sun-Earth Explorer (ISEE) Program consisted of three satellites intended to study the Earth's magnetosphere and the solar wind. ISEE-1 and ISEE-2 were launched on October 22, 1977 into highly elliptical geocentric orbits. The satellites passed through the magnetosphere and into the magnetosheath during each orbit. ISEE-3 was launched on August 12, 1978 and subsequently inserted into a 'halo orbit' about the the libration point situated about 240 earth radii (Re) upstream between the earth and the sun. Plasma passing this point arrives at the Earth about one hour later where it may cause changes that can be observed by ISEE 1 and ISEE-2. These two spacecraft, separated by a variable distance and with similar instrument complements, were intended to resolve the space-time ambiguity associated with measurements by a single spacecraft on thin boundaries which may be in motion such as the bow shock and the magnetopause. ISEE-1 and ISEE-3 were the principal U. S. contributions to the International Magnetospheric Study. ISEE-2 was built and managed by the European Space Agency. In September 1982 ISEE-3 was diverted from its 'halo orbit' to explore the earth's deep tail region through much of 1983 on its way to an encounter with the comet Giacobini Zinner in September 1985. ISEE-1 had a complement of thirteen experiments to measure the waves, fields, plasma, and particles. The University of Iowa Plasma Wave Instrument (PWI) was one of these thirteen. The ISEE-1 plasma waves instrument provided a comprehensive determination of wave characteristics over a broad frequency range, including high-frequency resolution spectrum scans, simultaneous high-time resolution electric and magnetic frequency spectrum measurements, wave normal and Poynting flux measurements, and wide-band waveform measurements. PWI sampled the environment using three electric dipole antennas with lengths of 215, 73.5, and 0.61 meters for electric-field measurements, and a triaxial search coil antenna with three 16-in high permeability mu-metal cores each wound with 10,000 turns of wire and a preamplifier for magnetic-field measurements. The experiment's main electronics consisted of four main elements: 1) a narrow-band sweep frequency receiver, 2) a pair of high time resolution spectrum analyzers, 3) a wave normal analyzer, and 4) an analog waveform receiver (also called a wide-band receiver). These elements could be electrically connected to the six antennas in various combinations in flight. Data for this file originate with the spectrum analyzers. The PWI Spectrum Analyzers were designed to provide high time resolution spectrum measurements for resolving wave emissions that are bursty or of a nonlinear nature. The pair consisted of a 20-channel analyzer covering the range from 5.62 Hz to 311 kHz, and a 14-channel analyzer covering the range from 5.62 Hz to 10 kHz. These analyzers have a relatively coarse frequency resolution, with four frequency channels per decade and bandwidths of +/-15 percent up to 10 kHz and +/-7.5 percent for 10 kHz and above. The center frequencies and bandwidths of the 20- and 14-channel analyzers are identical. The 20-channel analyzer was nominally intended for electric field measurements (which extend up to higher frequencies than the magnetic measurements), and the 14-channel analyzer was nominally intended for magnetic field measurements. All channels are sampled simultaneously so that electric-to-magnetic field ratios could be accurately determined. For a detailed description of the Plasma Wave Instrument, the reader is referred to the IEEE Geoscience Electronics reference above. A common acronym for the plasma waves instrument in older documentation is GUM, which stands for for Gurnett Mother. Since this acronym is not easily recognizable by the space physics community and since no official acronym is provided in the instrument paper, the more common short hand 'PWI' is used to refer to the Plasma Wave Instrument in this archive.

restrictednotspecifiedApr 2025View details →
nasa12/100

Voyager 1 Plasma Wave Subsystem (PWS), 16-Channel Spectrum Analyzer Data

This data set contains Voyager 1 Plasma Wave Subsystem (PWS) electric field 16-channel Spectrum Analyzer (SA) data for the entire mission in calibrated CDF files. As of the release date new data are accumulating.

restrictednotspecifiedAug 2025View details →
nasa12/100

ISEE 1 Plasma wave experiment (PWE) Spectrum Analyzer - Rapid Sample

'The ISEE-1 and -2 Plasma Wave Investigation' D. A. Gurnett, F. L. Scarf, R. W. Fredricks, and E. J. Smith, IEEE Transactions on Geoscience Electronics, Vol. GE-16, p. 225-230, 1978. The International Sun-Earth Explorer (ISEE) Program consisted of three satellites intended to study the Earth's magnetosphere and the solar wind. ISEE-1 and ISEE-2 were launched on October 22, 1977 into highly elliptical geocentric orbits. The satellites passed through the magnetosphere and into the magnetosheath during each orbit. ISEE-3 was launched on August 12, 1978 and subsequently inserted into a 'halo orbit' about the the libration point situated about 240 earth radii (Re) upstream between the earth and the sun. Plasma passing this point arrives at the Earth about one hour later where it may cause changes that can be observed by ISEE 1 and ISEE-2. These two spacecraft, separated by a variable distance and with similar instrument complements, were intended to resolve the space-time ambiguity associated with measurements by a single spacecraft on thin boundaries which may be in motion such as the bow shock and the magnetopause. ISEE-1 and ISEE-3 were the principal U. S. contributions to the International Magnetospheric Study. ISEE-2 was built and managed by the European Space Agency. In September 1982 ISEE-3 was diverted from its 'halo orbit' to explore the earth's deep tail region through much of 1983 on its way to an encounter with the comet Giacobini Zinner in September 1985. ISEE-1 had a complement of thirteen experiments to measure the waves, fields, plasma, and particles. The University of Iowa Plasma Wave Instrument (PWI) was one of these thirteen. The ISEE-1 plasma waves instrument provided a comprehensive determination of wave characteristics over a broad frequency range, including high-frequency resolution spectrum scans, simultaneous high-time resolution electric and magnetic frequency spectrum measurements, wave normal and Poynting flux measurements, and wide-band waveform measurements. PWI sampled the environment using three electric dipole antennas with lengths of 215, 73.5, and 0.61 meters for electric-field measurements, and a triaxial search coil antenna with three 16-in high permeability mu-metal cores each wound with 10,000 turns of wire and a preamplifier for magnetic-field measurements. The experiment's main electronics consisted of four main elements: 1) a narrow-band sweep frequency receiver, 2) a pair of high time resolution spectrum analyzers, 3) a wave normal analyzer, and 4) an analog waveform receiver (also called a wide-band receiver). These elements could be electrically connected to the six antennas in various combinations in flight. Data for this file originate with an electric antenna and were measured via the Electric Spectrum Analyzer (ESA). The PWI ESA was designed to provide high time resolution spectrum measurements for resolving wave emissions that are bursty or of a nonlinear nature. The ESA was a 20-channel analyzer covering the range from 5.62 Hz to 311 kHz. It had a relatively coarse frequency resolution, with four frequency channels per decade and bandwidths of +/-15 percent up to 10 kHz and +/-7.5 percent for 10 kHz and above. The ESA was nominally intended for electric field measurements, though 2.2 percent of all ESA measurements were made using the Z-axis magnetic search coil. The ISEE spacecraft collected two separate data products with the PWI ESA. 1) A full frequency range 20-channel spectra and 2) a single-channel, rapid-sample series. The 'E_series' variable in this file provides ESA rapid-sample measurements. Full frequency range 20-channel spectra are provided in a companion file set. The rapid-sample series data were collected at 8-times the data rate of the 20-channel spectra, thus there are 32 samples per second in high rate telemetry mode and 4 per second in low-rate mode. Regardless of the telemetry mode, every 16 seconds the rapid sample channel is incremented until reaching the highest frequency band of the ESA (311 kHz), where it rolls over to the 5th band (56.2 Hz). Only the upper 16 channels of the ESA were sampled in this manner. Altogether this provides a 16-channel frequency sweep every 4 minutes and 16 seconds. Unlike the SFR data, the time to preform a complete frequency sweep is not affected by the telemetry mode, though the number of samples in a sweep does increase by a factor of 4. Given the slowly changing nature of the frequency channel compared to the sampling time these data are stored as a time series, with the current frequency relegated to a status variable. Nonetheless, frequency-time spectrograms may be constructed from these measurements if desired. For a detailed description of the Plasma Wave Instrument, the reader is referred to the IEEE Geoscience Electronics reference above. A common acronym for the plasma waves instrument in older documentation is GUM, which stands for for Gurnett Mother. Since this acronym is not easily recognizable

restrictednotspecifiedApr 2025View details →
nasa12/100

GO J PWS REFORMATTED PLAYBACK SPECTRUM ANALYZER FULL V1.0

This data set includes full resolution electric and magnetic wave spectra from the Galileo plasma wave receiver recorded during Jupiter orbital operations. In addition waveform survey data (uncalibrated) and all instrument housekeeping data are included. The parameters provided for the electric field spectral data are uncalibrated data numbers. Software and calibration tables provided as part of this data set allow for fully calibrated data for the electric field measurements in raw data numbers, voltage at the antenna inputs (V), electric field (V/m), electric field spectral density (V**2/m**2/Hz), or power flux (W/m**2/Hz). The sources of these data are the High Frequency Receiver, Sweep Frequency Receiver, and Spectrum Analyzer which make up the Low Rate Science portion of the PWS.

restrictednotspecifiedMar 2025View details →
nasa12/100

VG1 J/S/SS PWS EDITED SPECTRUM ANALYZER FULL RES V1.0

This data set includes nearly all measurements collected from the spectrum analyzer component of the Plasma Wave Spectrometer (PWS) onboard Voyager 1 for the entire mission. Some noise lines during the planetary encounters have been edited from the data set. Each sweep of the PWS spectrum analyzer records spectral densities in 16 frequency channels from 50 Hz to 10 kHz. The values in this data set are given as instrument data numbers. Instructions for producing calibrated values are provided. An example C-language program which reads this data set and produces calibrated values is also provided.

restrictednotspecifiedMar 2025View details →
zenodo8/100

Characterization of novel spectrum and activity of R-pyocin of clinical Pseudomonas aeruginosa PU15

<p>Original Research representing the antimicrobial activity of the tailocin R-pyocin against AMR Gram-Positive pathogens and anti-biofilm activity as well.</p>

restrictedNov 2020View details →
zenodo8/100

Narratives of Girls and Boys with Autism Spectrum Disorders: Gender Differences in Narrative Competence and Internal State Language

<p>Data set of Kauschke, C., van der Beek, B., &amp; Kamp-Becker, I. (2016). Narratives of girls and boys with autism spectrum disorders: Gender differences in narrative competence and Internal State Language.<em> Journal of Autism and Developmental Disorders</em>, 46(3), 840-853. doi: 10.1007/s10803-015-2620-5.</p> <p>Data on request.</p>

restrictedJun 2017View details →
zenodo8/100

data set related to article An Exploratory Study of Emotional Dysregulation Dimensions in Youth With Attention Deficit Hyperactivity Disorder and/or Bipolar Spectrum Disorders

<p>This record contains raw data related to article&nbsp;An Exploratory Study of Emotional Dysregulation Dimensions in Youth With Attention Deficit Hyperactivity Disorder and/or Bipolar Spectrum Disorders</p>

restrictedFeb 2022View details →
zenodo8/100

DIAPASON Project - Quality of residential facilities in Italy: satisfaction and quality of life of residents with schizophrenia spectrum disorders

<p>Datasets of the paper entitled&nbsp; <em>Quality of residential facilities in Italy: satisfaction and quality of life of residents with schizophrenia spectrum disorders. BMC Psychiatry. 2022 (DOI:&nbsp;</em>10.1186/s12888-022-04344-w) of the project &quot;DAILY TIME USE, PHYSICAL ACTIVITY, QUALITY OF CARE AND INTERPERSONAL RELATIONSHIPS IN PSYCHIATRIC RESIDENTIAL FACILITIES: AN ITALIAN MULTICENTRE STUDY&quot; Italian Ministry of Health, Italy, Ricerca Finalizzata (Grant RF-2018-12365514) (https://www.diapason-study.eu/)</p> <p>&nbsp;</p> <p>&nbsp;</p>

restrictedApr 2022View details →
zenodo8/100

DIAPASON Project - Assessing adherence to and usability of Experience Sampling Method (ESM) and actigraph in patients with Schizophrenia Spectrum Disorder: A mixed-method study.

<p>Datasets of the paper entitled&nbsp; <em>Assessing adherence to and usability of Experience Sampling Method (ESM) and actigraph in patients with Schizophrenia Spectrum Disorder: A mixed-method study. Psychiatry Res. 2022 (</em>doi: 10.1016/j.psychres.2022.114675.)<em>&nbsp;</em> of the project &quot;DAILY TIME USE, PHYSICAL ACTIVITY, QUALITY OF CARE AND INTERPERSONAL RELATIONSHIPS IN PSYCHIATRIC RESIDENTIAL FACILITIES: AN ITALIAN MULTICENTRE STUDY&quot; Italian Ministry of Health, Italy, Ricerca Finalizzata (Grant RF-<a>2018-12365514</a>) (https://www.diapason-study.eu/)</p>

restrictedMay 2022View details →
zenodo8/100

DIAPASON Project - Patterns of antipsychotic prescription and accelerometer-based physical activity levels in people with schizophrenia spectrum disorders: a multicenter, prospective study.

<p>Dataset of the paper entitled <em>Patterns of antipsychotic prescription and accelerometer-based physical activity levels in people with schizophrenia spectrum disorders: a multicenter, prospective study. Int Clin Psychopharmacol. 2023 (</em>doi: 10.1097/YIC.0000000000000433)<em>&nbsp;</em> of the project &quot;DAILY TIME USE, PHYSICAL ACTIVITY, QUALITY OF CARE AND INTERPERSONAL RELATIONSHIPS IN PSYCHIATRIC RESIDENTIAL FACILITIES: AN ITALIAN MULTICENTRE STUDY&quot; Italian Ministry of Health, Italy, Ricerca Finalizzata (Grant RF-<a>2018-12365514</a>) (https://www.diapason-study.eu/)</p>

restrictedJun 2022View details →
zenodo8/100

DIAPASON Project - TIME WILL TELL: ASSOCIATIONS BETWEEN UNBALANCED TIME PERSPECTIVES AND SYMPTOM SEVERITY IN INDIVIDUALS WITH SCHIZOPHRENIA SPECTRUM DISORDERS

<p>Dataset of the paper entitled &quot;<strong>TIME WILL TELL: ASSOCIATIONS BETWEEN UNBALANCED TIME PERSPECTIVES AND SYMPTOM SEVERITY IN INDIVIDUALS WITH SCHIZOPHRENIA SPECTRUM DISORDERS&quot; </strong>of the project &quot;DAILY TIME USE, PHYSICAL ACTIVITY, QUALITY OF CARE AND INTERPERSONAL RELATIONSHIPS IN PSYCHIATRIC RESIDENTIAL FACILITIES: AN ITALIAN MULTICENTRE STUDY&quot; Italian Ministry of Health, Italy, Ricerca Finalizzata (Grant RF-<a>2018-12365514</a>) (https://www.diapason-study.eu/)</p>

restrictedJul 2022View details →
zenodo8/100

DIAPASON Project - Needs for care of residents with schizophrenia spectrum disorders and association with daily activities and mood monitored with experience sampling method: the DIAPASON study.

<p>Dataset of the paper entitled <em>Needs for care of residents with schizophrenia spectrum disorders and association with daily activities and mood monitored with experience sampling method: the DIAPASON study. Epidemiol Psychiatr Sci. 2023 (DOI:&nbsp;</em>10.1017/S2045796023000124)&nbsp;of the project &quot;DAILY TIME USE, PHYSICAL ACTIVITY, QUALITY OF CARE AND INTERPERSONAL RELATIONSHIPS IN PSYCHIATRIC RESIDENTIAL FACILITIES: AN ITALIAN MULTICENTRE STUDY&quot; Italian Ministry of Health, Italy, Ricerca Finalizzata (Grant RF-<a>2018-12365514</a>) (https://www.diapason-study.eu/)</p>

restrictedJul 2022View details →
zenodo8/100

DIAPASON Project - Interplay between negative symptoms, time spent doing nothing, and negative emotions in patients with schizophrenia spectrum disorders: results from a 37-site study.

<p>Datasets of the paper&nbsp; <em>Interplay between negative symptoms, time spent doing nothing, and negative emotions in patients with schizophrenia spectrum disorders: results from a 37-site study. NPJ Schizophrenia</em>, 2023 of the project &quot;DAILY TIME USE, PHYSICAL ACTIVITY, QUALITY OF CARE AND INTERPERSONAL RELATIONSHIPS IN PSYCHIATRIC RESIDENTIAL FACILITIES: AN ITALIAN MULTICENTRE STUDY&quot; Italian Ministry of Health, Italy, Ricerca Finalizzata (Grant RF-<a>2018-12365514</a>) (https://www.diapason-study.eu/)</p>

restrictedJul 2022View details →
zenodo8/100

DIAPASON Project - Ecological monitoring of emotional intensity, variability, and instability in individuals with schizophrenia spectrum disorders (ssd): results of a multicentre study

<p>Dataset of the paper <em>Ecological monitoring of emotional intensity, variability, and instability in individuals with schizophrenia spectrum disorders (ssd): results of a multicentre study.</em> of the project &quot;DAILY TIME USE, PHYSICAL ACTIVITY, QUALITY OF CARE AND INTERPERSONAL RELATIONSHIPS IN PSYCHIATRIC RESIDENTIAL FACILITIES: AN ITALIAN MULTICENTRE STUDY&quot; Italian Ministry of Health, Italy, Ricerca Finalizzata (Grant RF-2018-12365514) (https://www.diapason-study.eu/)</p>

restrictedSep 2022View details →

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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.

allen-brain-atlas
neuroscienceopenDocumentation, web resources, and API references are available online.
Last verified 2026-04-30Open record

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.

abode-home-cage
behavioral-neuroscienceopenThe DataShare record exposes download links for annotations, documentation, license text, and the zipped per-snippet data directory.
Last verified 2026-04-30Open record

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.

dandi-nwb
electrophysiologyopenPublished Dandiset metadata and archive endpoints are available through the production DANDI API.
Last verified 2026-04-30Open record

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.

ibl
behavioral-neuroscienceopenPublic sessions can be searched and loaded from the IBL public data server through ONE.
Last verified 2026-04-29Open record

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.

openneuro
neuroscienceopenPublished datasets are available on demand over the internet.
Last verified 2026-04-29Open record

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