• Digital Humanities and Cultural Heritage
• Research dataclose
• Dataset close
• Netherlands Organisation for Scientific Research (NWO) close
• NL close

We use the fully coupled atmosphere-ocean three-dimensional model of intermediate complexity iLOVECLIM to simulate the climate and oxygen stable isotopic signal during the Last Glacial Maximum (LGM, 21 000 yr). By using a model that is able to explicitly simulate the sensor (d18O), results can be directly compared with data from climatic archives in the different realms.Our results indicate that iLOVECLIM reproduces well the main feature of the LGM climate in the atmospheric and oceanic components. The annual mean d18O in precipitation shows more depleted values in the northern and southern high latitudes during the LGM. The model reproduces very well the spatial gradient observed in ice core records over the Greenland ice-sheet. We observe a general pattern toward more enriched values for continental calcite d18O in the model at the LGM, in agreement with speleothem data. This can be explained by both a general atmospheric cooling in the tropical and subtropical regions and a reduction in precipitation as confirmed by reconstruction derived from pollens and plant macrofossils.Data-model comparison for sea surface temperature indicates that iLOVECLIM is capable to satisfyingly simulate the change in oceanic surface conditions between the LGM and present. Our data-model comparison for calcite d18O allows investigating the large discrepancies with respect to glacial temperatures recorded by different microfossil proxies in the North Atlantic region. The results argue for a trong mean annual cooling between the LGM and present (>6°C), supporting the foraminifera transfer function reconstruction but in disagreement with alkenones and dinocyst reconstructions. The data-model comparison also reveals that large positive calcite d18O anomaly in the Southern Ocean may be explained by an important cooling, although the driver of this pattern is unclear. We deduce a large positive d18Osw anomaly for the north Indian Ocean that contrasts with a large negative d18Osw anomaly in the China Sea between the LGM and present. This pattern may be linked to changes in the hydrological cycle over these regions. Our simulation of the deep ocean suggests that changes in d18Osw between the LGM and present are not spatially homogenous. This is supported by reconstructions derived from pore fluids in deep-sea sediments. The model underestimates the deep ocean cooling thus biasing the comparison with benthic calcite d18O data. Nonetheless, our data-model comparison support a heterogeneous cooling of few degrees (2-4°C) in the LGM Ocean. The supplement contains two excel files in zip-archive with compiled planktic and benthic foraminifera calcite d18O measurements of deep-sea cores for which both Last Glacial Maximum and Late Holocene d18O exist. The data are from various publications as given in the reference-column. Using individual datasets requires the citation of the original paper. Supplement to: Caley, Thibaut; Roche, D M; Waelbroeck, Claire; Michel, Elisabeth (2014): Oxygen stable isotopes during the Last Glacial Maximum climate: perspectives from data–model (iLOVECLIM) comparison. Climate of the Past, 10(6), 1939-1955

A collection of around 11.000 painted faces, from 6 galleries, and a datafile with statistics for each face. Each face is present as a crop from the original painting, a crop with the background removed and a crop with the background, eyes and mouth removed.

This data collection provides the second wave of data in a longitudinal, multi-cohort study of American youth conducted by the National Opinion Research Center (NORC) on behalf of the National Center for Education Statistics. The first wave of data was collected in 1980 (ICPSR 7896) and the third wave was collected in 1984 (ICPSR 8443). Student identification numbers included in each record permit data from these surveys to be merged with other High School and Beyond files. The base-year (1980) study incorporated student data from both cohorts into one file. Due to the more complex design of the First Follow-Up and a resulting increase in the volume of available data, separate files have been created for the two cohorts. The sophomore cohort portion of this collection replicates nearly all of the types of data gathered in the base-year study (ICPSR 7896), including students' behavior and experiences in the secondary school setting, outside employment, educational and occupational aspirations and expectations, personal and family background, and personal attitudes and beliefs. Also, the same cognitive test was administered in the base-year and follow-up surveys. The senior cohort portion, in contrast, emphasizes postsecondary education and work experiences. Education data include the amount and type of school completed, school financing, aspirations, and non-school training. Information is also provided on labor force participation and aspirations, military service, and financial status. The senior cohort did not take the cognitive test for the follow-up survey. Both cohorts provide demographic data such as age, race, sex, and ethnic background. The Transcripts Survey provides information on individual students such as the type of high school program, the student's grade point average, attendance, class rank and size, and participation in special education programs, plus course-oriented data such as the year a course was taken, the type of course, credit earned, and grades received. The Offerings and Enrollments Survey file contains data on each school in the sample and include variables such as size and type of institution, type of schedule used, ethnic composition of the faculty and student body, busing, types of programs and specific courses offered, school facilities, number of handicapped students, and school staffing. In addition, information is provided on academic and disciplinary policies, and perceived problems in the school. The Local Labor Market Indicators file contains economic and labor market data for the geographical area of each school in the sample, given both by county and by Standard Metropolitan Statistical Area. The School Questionnaire file incorporates data elements from both the Base-Year School Questionnaire and the First Follow-up School Questionnaire, along with other information from sampling files, into a single record for each school. Topics include institutional characteristics such as total enrollment, average daily attendance rates, dropout rates, remedial programs, provisions for handicapped and disadvantaged students, participation in federal programs, teacher retention and absenteeism, per-pupil expenditures, school rules and policies, and ownership and funding of nonpublic schools. The base-year High School and Beyond Survey (ICPSR 7896) used a stratified, disproportionate probability sample of 1,122 schools selected from a sampling frame of 24,725 high schools. Within each school, 36 seniors and 36 sophomores were randomly chosen. For the First Follow-Up, the National Opinion Research Center attempted to survey all 1980 sophomores and a subsample of 1980 seniors who participated in the base-year survey. Supplementary questionnaires were utilized for those 1980 sophomores who were not currently attending any school, had transferred to other schools, or had graduated early. The Transcripts Survey includes every secondary-school course taken by a sub-sample of the sophomore cohort. The Course Offerings and Enrollments Survey contains data from schools that were selected as first-stage sample units (clusters) for the sampling of students in the base-year survey, and in which sophomore High School and Beyond students were actively enrolled during the 1981-1982 academic year. For the Local Labor Market Indicators file, economic variables were derived from data provided by the Bureau of Labor Statistics and the Bureau of Economic Analysis. For the School Questionnaire file, follow-up data were requested from all base-year schools that were still in existence as independent institutions and that had members of the 1980 sophomore cohort currently enrolled. Follow-up data were not collected from schools that had closed, merged with other schools, or had no 10th or 12th grade students during the base year, nor from schools to which students transferred as individuals. However, in 17 instances students from a base-year school were transferred en masse to a new school, and school questionnaires were sought from these new schools. These 17 schools do not have weights as their selection probabilities are unknown. Datasets: DS0: Study-Level Files DS1: Sophomore Cohort First Follow-Up Data DS2: SAS Control Cards for Sophomore First Follow-up Data DS3: User's Manual for Sophomore First Follow-up Data DS4: Senior Cohort First Follow-Up Data DS5: SAS Control Cards for Senior First Follow-up Data DS6: Sophomore Cohort Transcripts Survey Data DS7: Sophomore Cohort Transcripts Survey CSSC Codes DS8: Sophomore Cohort Transcripts Survey SPSS Cards for Record Sophomore Cohort Type 1 DS9: Sophomore Cohort Transcripts Survey SPSS Cards for Record Sophomore Cohort Type 2 DS10: Sophomore Cohort Transcripts Survey SAS Control Cards DS11: Course Offerings and Enrollments Data DS12: Course Offerings and Enrollments CSSC Codes DS13: Course Offerings and Enrollments SPSS Cards for Record Type 1 DS14: Course Offerings and Enrollments SPSS Cards for Record Type 2 DS15: Local Labor Market Indicators Data DS16: Local Labor Market Indicators SAS Control Cards DS17: School Questionnaire Data DS18: SAS Control Cards for School Questionnaire Data There are two distinct types of records in the Transcripts and the Offerings and Enrollments files: for each case, there is a Type 1 record that contains information for a single student or school. Immediately following each Type 1 record are one or more Type 2 records, each of which provides data on a single course taken by the student or offered by the school. Because the number of courses may vary, the length of the combined Type 2 records varies as well. Therefore these two files are written in variable blocked format. In both of these files the total number of records greatly exceeds the number of cases: the Transcripts file has a total of 471,330 records, and the Offerings and Enrollments file has 142,290 records. The universe for this collection consists of all persons in the United States who were high school sophomores or seniors in 1980. High School and Beyond (HS&B) Series

Materials In Paintings (MIP): An interdisciplinary dataset for perception, art history, and computer vision.Download the README.txt first to help you decide what you want/need to download!In this dataset, we capture the painterly depictions of materials to enable the study of depiction and perception of materials through the artists' eye. We annotated a dataset of 19k paintings with 200k+ bounding boxes from which polygon segments were automatically extracted. Each bounding box was assigned a coarse label (e.g., fabric) and a fine-grained label (e.g., velvety, silky).Note that the data can be browed and explored on https://materialsinpaintings.tudelft.nl. If you only want to download a few paintings, using that website might be faster.

Adherence to social distancing measures in the United States. Survey study (3 cohorts) on adherence to social distancing measures and its predictors. Raw data+ syntax for data prep for all 3 surveys (SPSS) + combined dataset Waves 1-3 (SPSS and Stata).The analyses that are reported in the paper were conducted as follows:(1) development of adherence and predictors: SPSS W1-W3 data file + syntax(2) hierarchical regression analysis: Stata W1-W3 data file + syntax(3) mediation analysis: Stata W1-W3 data file + syntaxThese materials were revised on 17/6/21 (for journal revision).For more information, please see https://corona-compliance.org/

Specimen data of Stigmellamultispicata and other Ulmus mining Nepticulidae : Explanation note: The 288 records are the records of specimens examined and records obtained from online sources, of the taxa treated in this paper and supplement the presented Material examined.

Antarctic ice sheet and Southern Ocean paleoceanographic configurations during the late Oligocene are not well resolved. They are however important to understand the influence of high-latitude Southern Hemisphere feedbacks on global climate under CO2 scenarios (between 400 and 750 ppm) projected by the IPCC for this century, assuming unabated CO2 emissions. Sediments recovered by the Integrated Ocean Drilling Program (IODP) at Site U1356, offshore of the Wilkes Land margin in East Antarctica, provide an opportunity to study ice sheet and paleoceanographic configurations during the late Oligocene (26-25 Ma). Our study, based on a combination of sediment facies analysis, magnetic susceptibility, density, and X-Ray Fluorescence geochemical data, shows that glacial and interglacial sediments are continuously reworked by bottom-currents, with maximum velocities occurring during the interglacial periods. Glacial sediments record poorly ventilated, low-oxygenation bottom water conditions, interpreted to result from a northward shift of westerly winds and surface oceanic fronts. Interglacial sediments record more oxygenated and ventilated bottom water conditions and strong current velocities, which suggests enhanced mixing of the water masses as a result of a southward shift of the Polar Front. Intervals with preserved carbonated nannofossils within some of the interglacial facies are interpreted to form under warmer paleoclimatic conditions when less corrosive warmer northern component water (e.g. North Atlantic sourced deep water) had a greater influence on the Site. Spectral analysis on the late Oligocene sediment interval show that the glacial-interglacial cyclicity and related displacements of the Southern Ocean frontal systems between 26-25 Ma were forced mainly by obliquity. The paucity of iceberg rafted debris (IRD) throughout the studied interval contrasts with earlier Oligocene and post-Miocene Climate Optimum sections from Site U1356 and with late Oligocene strata from the Ross Sea, which contain IRD and evidence for coastal glaciers and sea ice. These observations, supported by elevated sea surface paleotemperatures, the absence of sea-ice, and reconstructions of fossil pollen between 26 and 25 Ma at Site U1356, suggest that open ocean water conditions prevailed. Combined, these evidences suggest that glaciers or ice caps likely occupied the topographic highs and lowlands of the now marine Wilkes Subglacial Basin (WSB). Unlike today, the continental shelf was not over-deepened and thus ice sheets in the WSB were likely land-based and marine-based ice sheet expansion was likely limited to coastal regions. Supplement to: Salabarnada, Ariadna; Escutia, Carlota; Röhl, Ursula; Nelson, C Hans; McKay, Robert M; Jiménez-Espejo, Francisco Jose; Bijl, Peter K; Hartman, Julian D; Strother, Stephanie L; Salzmann, Ulrich; Evangelinos, Dimitris; López-Quirós, Adrián; Flores, José Abel; Sangiorgi, Francesca; Ikehara, Minoru; Brinkhuis, Henk (2018): Paleoceanography and ice sheet variability offshore Wilkes Land, Antarctica – Part 1: Insights from late Oligocene astronomically paced contourite sedimentation. Climate of the Past, 14(7), 991-1014

Input data and output of research conducted in the study described in the paper: F. Kunneman and A. Van den Bosch (2016), Open-domain extraction of future events from Twitter, Natural Language Engineering, doi: 10.1017/S1351324916000036 The paper describes a system that extracts future referring time expressions and entities from Twitter messages, and subsequently detects events as a pair of a date and entity the are often mentioned in the same tweet. This dataset features the ids of a large set of Dutch tweets posted in August 2014, which was used as input to the system, as well as the time expression and / or entity that was extracted from each tweet, if any. Furthermore, the detected events are included, represented as a date, one or more describing terms, the tweetids that refer to it and the assessment of the event by human annotators.