4926 research outputs found
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Winning and Retaining Plasma Donors - A European Collection and Donation Perspective
No full textThe zip-folder contains the raw datasets (Qualtrics Excel exports), the country-specific datasets, and the combined dataset. Before merging, the data were labeled and prepared using the Stata do-file 01_Data curation.do. All analyses were conducted using the Stata do-file 02_Data analysis.do
The Importance of Financial Incentives for Prosocial Behavior in Markets That Already Remunerate Donors: Empirical Analyses of Financial Compensation on Plasma Donation Behavior
No full textThe ZIP folder is organized into three study-specific subfolders. Each folder contains the raw dataset and the corresponding code. Where applicable, the preregistration and the Qualtrics survey are also included
Multispectral data for faded and illegible specimen labels at the Natural History Museum (CeNak) of the University of Hamburg
No full textMultispectral dataset recovering faded and illegible text on specimen labels at the Natural History Museum (CeNak) of the University of Hamburg. The analyzed specimen labels were for an Argonauta, Isopeda immanis, Octopus vulgars, and Pachycephala, and an additional three white labels. Dataset contains raw image data as well as processed images.
Images in preview are compressed and of lower quality. They are mainly intended to serve as thumbnails. Original hiqh quality TIF images can be found in the Color and PROCESSED folder below (zip file). For information about filenames and folderstructure as well as MSI system related info, please read the "Brief Description of Datasets for Multispectral Imaging.
Daily melt-pond fraction on Arctic sea ice from TERRA MODIS visible imagery
No full textAbstract: Reflectance measurements carried out at Terra MODIS bands 1, 3 and 4 are combined in a spectral un-mixing approach to estimate the melt-pond fraction on Arctic sea ice north of 60°N for months June through August for the years 2000 through 2024. The resulting data set has daily temporal sampling and is offered on a polar-stereographic grid (true latitude is 70°N) with 500 m x 500 m and 12.5 km x 12.5 km grid resolution. The data files contain, in addition to the melt-pond fraction, also the fraction of open water between the sea ice and the net sea-ice surface fraction, i.e. the fraction of sea ice without melt ponds. For information about the approach used and the validation of the data set offered here we refer to Rösel et al. (2012) and Sadikni and Kern (2025).
TableOfContents:
500 m x 500 m product: grid-cell fraction of melt ponds (on sea ice); grid-cell fraction of sea ice without melt ponds; grid-cell fraction of open water
12.5 km x 12.5 km product: grid-cell fraction of melt ponds (on sea ice); grid-cell fraction of sea ice without melt ponds; grid-cell fraction of open water; grid-cell_fraction_of_melt_ponds standard_deviation; grid-cell_fraction_of_sea_ice_without_melt_ponds standard_deviation; grid-cell_fraction_of_open_water standard_deviation; number of clear-sky 500 m grid cells; clear-sky mask
While the 12.5 km x 12.5 km comes with latitude and longitude values for each grid cell, those of the 500 m x 500 m product are provided in a separate netCDF file.
Note that the grid resolution of 12.5 km (and 500m) is only valid at the latitude at which the tangential plane of the polar stereographic projection touches the Earth's surface - here 70°N. North of this latitude the actual grid cell area is smaller, south of it it is larger (see also https://nsidc.org/data/user-resources/help-center/guide-nsidcs-polar-stereographic-projection#anchor-grid-distortion). In order to assist in the computation of the actual area (in km2) covered by melt ponds (or the other two surface types) we provide a netCDF file of the true area of each grid cell of the 12.5 km x 12.5 km product.
Technical Info:
500 m x 500 m product: dimensions: 13286 columns x 13293 rows; temporalExtent_startDate: 2000-06-01; temporalExtent_endDate: 2024-08-31; temporalResolution: daily; spatialResolution: 500; spatialResolutionUnit: meter; horizontalResolutionXdirection: 500; horizontalResolutionXdirectionUnit: meter; horizontalResolutionYdirection: 500; horizontalResolutionYdirectionUnit: meter; verticalResolution: none; verticalResolutionUnit: none; verticalStart: none; verticalEnd: none; instrumentName: Moderate Resolution Spectroradiometer (MODIS); instrumentType: 32-band imaging spectroradiometer; instrumentLocation: Earth Observation Satellite (EOS) Terra; instrumentProvider: NOAA/NASA
12.5 km x 12.5 km product: dimensions: 531 columns x 531 rows; temporalExtent_startDate: 2000-06-01; temporalExtent_endDate: 2024-08-31; temporalResolution: daily; spatialResolution: 12500; spatialResolutionUnit: meter; horizontalResolutionXdirection: 12500; horizontalResolutionXdirectionUnit: meter; horizontalResolutionYdirection: 12500; horizontalResolutionYdirectionUnit: meter; verticalResolution: none; verticalResolutionUnit: none; verticalStart: none; verticalEnd: none; instrumentName: Moderate Resolution Spectroradiometer (MODIS); instrumentType: 32-band imaging spectroradiometer; instrumentLocation: Earth Observation Satellite (EOS) Terra; instrumentProvider: NOAA/NASA
Missing data (either because the MOD09GA product has gaps or because the melt-pond fraction retrieval failed): 2000-08-06 to 2000-08-17; 2001-06-16 to 2001-07-02; 2002-06-15 to 2002-06-19; 2002-07-11; 2004-06-20 to 2004-06-22; 2005-07-21; 2008-08-06 to 2008-08-08; 2008-08-11; 2008-08-22; 2010-06-17; 2010-08-01; 2010-08-16; 2013-06-09; 2013-06-15; 2014-08-02; 2016-06-07; 2016-06-08; 2016-06-11; 2016-08-12; 2018-08-04; 2021-08-11; 2024-06-21; 2024-06-22; 2024-06-25.
Methods: For a description of the methods used see Sadikni and Kern, 2025.
Units:
500 m x 500 m product: 1, 1, 1
12500 m x 12500 m product: 1, 1, 1, 1, 1, 1, 1, 1
geoLocations: westBoundLongitude: -180.0 degrees East; eastBoundLongitude: 180.0 degrees East; southBoundLatitude: 60.0 degrees North; northBoundLatitude: 90.0 degrees North; geoLocationPlace: northern hemisphere
Size:
500 m x 500 m product: Single file: 2.1 GigaByte; zip-file or one month: 1.5 to 4.0 GigaByte (depends on gaps due to cloud cover); total volume (as unpacked netCDF): 4.87 TeraByte
12.5 km x 12.5 km product: Single daily file: ~10 MegaByte; annually aggregated file: ~670 MegaByte; zip-file of one month: 60 to 100 MegaByte (depends on gaps due to cloud cover); total volume (as unpacked netCDF): 22.8 GigaByte
Format: netCDF
DataSources: MODerate resolution Imaging Spectroradiometer MODIS aboard the Earth Observation Satellite (EOS) Terra collection 6.1 product MOD09A1 of the surface spectral reflectance: https://lpdaac.usgs.gov/products/mod09gav061/ (last access: Dec. 6, 2024).
Contact: remon.sadikni (at) uni-hamburg.de; stefan.kern (at) uni-hamburg.de
Web page: https://www.cen.uni-hamburg.de/en/icdc/data/cryosphere/arctic-meltponds.htm
Product Differentiation through Labels: Evidence from EU Energy Relabeling
No full textReplication data for current working paper version of "Product Differentiation through Labels: Evidence from EU Energy Relabeling"
Stress disrupts hippocampal integration of overlapping events and memory inference in humans
No full textThis repository contains data and analysis scripts used for the study "Stress disrupts hippocampal integration of overlapping events and memory inference in humans"
Multispectral Imaging Data of the Threse, B 15 a, Bibliothek des Staatsarchives, Hamburg
No full textMultispectral Imaging data of the Threse, B 15 a, Bibliothek des Staatsarchives, Hamburg
Captured on 14-16.06.2016
Results presented to the mayor of Hamburg and the members of Senate on 23.06.201
Supplemental Materials for "The Temporal Stability of Visual Cortical Processing in Humans Depends on Early Experience"
No full textSupplemental materials for the article ""The Temporal Stability of Visual Cortical Processing in Humans Depends on Early Experience".
Contents:
Supplementary Tables S1 - S8
Supplementary Figure S
Do Shorter Home Video Release Windows Cannibalize Movie Theater Attendance? An Empirical Analysis of Consumer Expectations, Preferences, and Behavior
No full textThe uploaded zip file contains all data, code, materials, manuscript, and appendix for the paper, "Do Shorter Home Video Release Windows Cannibalize Movie Theater Attendance? An Empirical Analysis of Consumer Expectations, Preferences, and Behavior", submitted to Journal of Marketing in December, 2025
Examining Prosocial Tendencies in Men who have Sex with Men: Potential Impacts on Blood Donation following the 2023 Reform
No full textthe folder contains the raw datasets as well as the code based on which the 2019 and 2019_2020 datasets are generated.
The analyses were conducted based on the dataset 2019_2020