16,060,078 Works

Trends in International Mathematics and Science Study (TIMSS) 2015 Grade 9: Mathematics teacher (BTM) - South Africa as one of 39 countries

Vijiyaluxmi Reddy, Fabian Arends, Andrea Liesel Juan, Casper Hendrik Prinsloo, Margaretha Maria Visser, Lolita Desiree Winnaar & Human Sciences Research Council
Description: This data set contains mathematics teacher responses to the teacher background questionnaire, i.e. school emphasis on academic success, school environment, about being a teacher, about teaching the TIMSS class, etc. All mathematics teachers were required to complete this questionnaire. The data set has 203 variables and was completed by 334 teachers. Of the 300 sampled schools, 292 schools was realised providing a response rate of 97%. Abstract: TIMSS is a cross-national assessment of mathematics...

National Research and Experimental Development Survey (R&D) 2013-14: All provinces in South Africa - Aggregated

Isabel Basson, Natasha Charmaine Saunders, Saahier Parker, Natale Le Roux, Nazeem Mustapha, Neo Molotja, Takura Kupamupindi, Ronel Sewpaul, Mario Andre Clayford, Moses Mefika Sithole, Natalie Adelai Vlotman, Precious Mudavanhu, Darryn Whisgary & Department Of Science And Technology, Human Sciences Research Council
Description: This data set contains the aggregated data for 2013-14 on the R&D expenditure per province by Business, Government, Higher Education, Not-for-Profit Organisations and Science Councils. R&D expenditure is aggregated by five survey sectors across nine provinces in South Africa. Abstract: The National Research and Experimental Development Survey (R&D) collects data on the R&D expenditure by five survey sectors across nine provinces in South Africa. The 2013-14 survey collected primary data from five survey sectors:...

GBIF Occurrence Download

Occdownload Gbif.Org
A dataset containing 278568 species occurrences available in GBIF matching the query: { "DatasetKey" : [ "is Database for the Atlas of Freshwater Fishes" ] }. The dataset includes 278568 records from 1 constituent datasets: 278568 records from Database for the Atlas of Freshwater Fishes. Data from some individual datasets included in this download may be licensed under less restrictive terms.

South African Social Attitudes Survey (SASAS) 2005: Combined data with individual weight - All provinces

Benjamin Roberts & Human Sciences Research Council
Description: The harmonised core module data are available in the combined dataset. The questions contained in the core modules of the two SASAS questionnaires for 2005 (demographics and core thematic issues) were asked of 7000 respondents, while the remaining rotating modules were asked of a half sample of approximately 3500 respondents each. The combined data set contains 5734 records and 167 variables. Topics included in the questionnaires are: democracy, national identity, public services, moral and...

Zika Virus Data

Jeremy Singer-Vine
The Pan American Health Organization / World Health Organization is publishing weekly counts of suspected and confirmed cases, by country and territory, as reported by each country. The data portal includes a few important notes:"The suspected cases in Brazil are unofficial (media monitoring)""Data is shared in an effort to transparently disseminate available information reported by Member States. Any subsequent interpretation and analysis of this data should consider differences in surveillance systems and reporting requirements."The European...

Zika Virus Data

Jeremy Singer-Vine
The Pan American Health Organization / World Health Organization is publishing weekly counts of suspected and confirmed cases, by country and territory, as reported by each country. The data portal includes a few important notes:"The suspected cases in Brazil are unofficial (media monitoring)""Data is shared in an effort to transparently disseminate available information reported by Member States. Any subsequent interpretation and analysis of this data should consider differences in surveillance systems and reporting requirements."The European...

Zika Virus Data

Jeremy Singer-Vine
The Pan American Health Organization / World Health Organization is publishing weekly counts of suspected and confirmed cases, by country and territory, as reported by each country. The data portal includes a few important notes: "The suspected cases in Brazil are unofficial (media monitoring)""Data is shared in an effort to transparently disseminate available information reported by Member States. Any subsequent interpretation and analysis of this data should consider differences in surveillance systems and reporting requirements."The...

South African National HIV Prevalence, HIV Incidence, Behaviour and Communication Survey (SABSSM) 2008: Adult - All provinces

Thomas Michael Rehle, Olive Shisana, Leickness Chisamu Simbayi & Human Sciences Research Council
Description: This data set contains information on adults aged 25 years and older: biographical data, media, communication and norms, knowledge and perceptions of HIV/AIDS, male circumcision, sexual debut, partners and partner characteristics, condoms, vulnerability, HIV testing, alcohol and substance use, general perceptions about government, health and violence in the community. The data set contains 516 variables and 10501 cases. Abstract: South Africa continues to have the largest number of people living with HIV/AIDS in the...

Trends in International Mathematics and Science Study (TIMSS) 2015 Grade 9: Learner background (BSG) - South Africa as one of 39 countries

Vasudhevan Reddy, Fabian Arends, Andrea Liesel Juan, Casper Hendrik Prinsloo, Margaretha Maria Visser, Lolita Desiree Winnaar & Human Sciences Research Council
Description: This data set contains the responses of grade 9 learners when asked questions referring to their background, i.e. home environment, parental involvement, their perceptions of their school, bullying, homework, etc. All learners were required to complete this questionnaire. The data file also includes learner mathematics and science scores. The data set has 315 variables and was completed by 12514 learners. Of the 300 sampled schools, 292 schools were included in the 2015 round of...

National Research and Experimental Development Survey (R&D) 2012-13: All provinces in South Africa - Aggregated

Thomson Batidzirai, Precious Mudavanhu, Ronel Sewpaul, Mario Andre Clayford, Demetre Labadarios, Moses Mefika Sithole, Nazeem Mustapha, Vaughan Leiberum, Natalie Adelai Vlotman, Natasha Charmaine Saunders, Neo Molotja, Saahier Parker, Nolitha Nkobole, Takura Kupamupindi, Zandile Matshaya, Julien Rumbelow, Isabel Basson, Gillian Marcelle, Natale Le Roux & Department Of Science And Technology, Human Sciences Research Council
Description: This data set contains the aggregated data for 2012-13 on the R&D expenditure per province by Business, Government, Higher Education, Not-for-Profit Organisations and Science Councils. R&D expenditure is aggregated by five survey sectors across nine provinces in South Africa. . Abstract: The National Research and Experimental Development Survey (R&D) collects data on the R&D expenditure by five survey sectors across nine provinces in South Africa. The 2012-13 survey collected primary data from five survey...

GammaCombo framework for combinations of measurements and computation of confidence intervals: Public Release v1.1

Matthew Kenzie, Moritz Karbach, Titus Mombächer, Maximilian Schlupp & Konstantin Schubert
Official Release for DOI A few minor aesthetic issues amended from v0.9 and v1.0

GammaCombo framework for combinations of measurements and computation of confidence intervals: Public Release v1.1

Matthew Kenzie, Moritz Karbach, Titus Mombächer, Maximilian Schlupp & Konstantin Schubert
Official Release for DOI A few minor aesthetic issues amended from v0.9 and v1.0

South African Social Attitudes Survey (SASAS) 2005: Questionnaire 2 - All provinces

Benjamin Roberts & Human Sciences Research Council
Description: The questions contained in the core modules of the two SASAS questionnaires for 2005 (demographics and core thematic issues) were asked of 7000 respondents, while the remaining rotating modules were asked of a half sample of approximately 3500 respondents each. The data set contains 2884 records and 313 variables. Topics included in the questionnaires are: democracy, national identity, public services, moral issues, crime, voting, demographics and other classificatory variables. Rotating modules are: International Social...

Neurovascular coupling and cerebral autoregulation in atrial fibrillation

Rehan T Junejo, Igor D Braz, Samuel JE Lucas, Johannes J Van Lieshout, Aaron A Phillips, Gregory YH Lip & James P Fisher
The risk of cognitive decline and stroke is increased by atrial fibrillation (AF). We sought to determine whether neurovascular coupling and cerebral autoregulation are blunted in people with AF in comparison with age-matched, patients with hypertension and healthy controls. Neurovascular coupling was assessed using five cycles of visual stimulation for 30 s followed by 30 s with both eyes-closed. Cerebral autoregulation was examined using a sit–stand test, and a repeated squat-to-stand (0.1 Hz) manoeuvre with...

Neurovascular coupling and cerebral autoregulation in atrial fibrillation

Rehan T Junejo, Igor D Braz, Samuel JE Lucas, Johannes J Van Lieshout, Aaron A Phillips, Gregory YH Lip & James P Fisher
The risk of cognitive decline and stroke is increased by atrial fibrillation (AF). We sought to determine whether neurovascular coupling and cerebral autoregulation are blunted in people with AF in comparison with age-matched, patients with hypertension and healthy controls. Neurovascular coupling was assessed using five cycles of visual stimulation for 30 s followed by 30 s with both eyes-closed. Cerebral autoregulation was examined using a sit–stand test, and a repeated squat-to-stand (0.1 Hz) manoeuvre with...

Supplemental material for Neurovascular coupling and cerebral autoregulation in atrial fibrillation

Rehan T Junejo, Igor D Braz, Samuel JE Lucas, Johannes J Van Lieshout, Aaron A Phillips, Gregory YH Lip & James P Fisher
Supplemental Material for Neurovascular coupling and cerebral autoregulation in atrial fibrillation by Rehan T Junejo, Igor D Braz, Samuel JE Lucas, Johannes J van Lieshout MD Aaron A Phillips, Gregory YH Lip and James P Fisher in Journal of Cerebral Blood Flow & Metabolism

Supplemental material for Neurovascular coupling and cerebral autoregulation in atrial fibrillation

Rehan T Junejo, Igor D Braz, Samuel JE Lucas, Johannes J Van Lieshout, Aaron A Phillips, Gregory YH Lip & James P Fisher
Supplemental Material for Neurovascular coupling and cerebral autoregulation in atrial fibrillation by Rehan T Junejo, Igor D Braz, Samuel JE Lucas, Johannes J van Lieshout MD Aaron A Phillips, Gregory YH Lip and James P Fisher in Journal of Cerebral Blood Flow & Metabolism

Healthcare resource utilization and costs in the 12 months following hospitalization for respiratory syncytial virus or unspecified bronchiolitis among infants

Joel Ledbetter, Lance Brannman, Sally W. Wade, Tara Gonzales & Amanda M. Kong
Aims: To examine healthcare resource utilization (HRU) and costs within 12 months after hospitalization for respiratory syncytial virus (RSVH) or unspecified bronchiolitis (UBH) in infants. Materials and methods: Infants born 7/1/2009 - 6/30/2015 were identified in the MarketScan Medicaid and Commercial databases and were assigned to 1 of 3 cohorts: RSVH (with/without UBH), UBH, or comparator (no RSVH or UBH). Each infant was identified as preterm (5 groups) or term (2 groups) based on weeks...

Healthcare resource utilization and costs in the 12 months following hospitalization for respiratory syncytial virus or unspecified bronchiolitis among infants

Joel Ledbetter, Lance Brannman, Sally W. Wade, Tara Gonzales & Amanda M. Kong
Aims: To examine healthcare resource utilization (HRU) and costs within 12 months after hospitalization for respiratory syncytial virus (RSVH) or unspecified bronchiolitis (UBH) in infants. Materials and methods: Infants born 7/1/2009 - 6/30/2015 were identified in the MarketScan Medicaid and Commercial databases and were assigned to 1 of 3 cohorts: RSVH (with/without UBH), UBH, or comparator (no RSVH or UBH). Each infant was identified as preterm (5 groups) or term (2 groups) based on weeks...

South African National HIV Prevalence, HIV Incidence, Behaviour and Communication Survey (SABSSM) 2008: Visiting point data - All provinces

Olive Shisana, Leickness Chisamu Simbayi, Thomas Michael Rehle & Human Sciences Research Council
Description: This data set contains household information about the people who usually live at the visiting point and slept there the previous night as per the time of the interview. Information about their age, sex, marital status, race, language spoken, deaths in the household, education status, main source of drinking water, energy for cooking and type of toilet facility and socio-economic status information is also included in the visiting point data set. The data set...

Supplemental material for Dynamics of the cerebral blood flow response to brief neural activity in human visual cortex

Jung Hwan Kim, Amanda J Taylor, Danny JJ Wang, Xiaowei Zou & David Ress
Supplemental Material for Dynamics of the cerebral blood flow response to brief neural activity in human visual cortex by Jung Hwan Kim, Amanda J Taylor, Danny JJ Wang, Xiaowei Zou and David Ress in Journal of Cerebral Blood Flow & Metabolism

Dynamics of the cerebral blood flow response to brief neural activity in human visual cortex

Jung Hwan Kim, Amanda J Taylor, Danny JJ Wang, Xiaowei Zou & David Ress
The blood oxygen-level dependent (BOLD) functional magnetic resonance imaging (fMRI) signal depends on an interplay of cerebral blood flow (CBF), oxygen metabolism, and cerebral blood volume. Despite wide usage of BOLD fMRI, it is not clear how these physiological components create the BOLD signal. Here, baseline CBF and its dynamics evoked by a brief stimulus (2 s) in human visual cortex were measured at 3T. We found a stereotypical CBF response: immediate increase, rising to...

Supplemental material for Dynamics of the cerebral blood flow response to brief neural activity in human visual cortex

Jung Hwan Kim, Amanda J Taylor, Danny JJ Wang, Xiaowei Zou & David Ress
Supplemental Material for Dynamics of the cerebral blood flow response to brief neural activity in human visual cortex by Jung Hwan Kim, Amanda J Taylor, Danny JJ Wang, Xiaowei Zou and David Ress in Journal of Cerebral Blood Flow & Metabolism

Dynamics of the cerebral blood flow response to brief neural activity in human visual cortex

Jung Hwan Kim, Amanda J Taylor, Danny JJ Wang, Xiaowei Zou & David Ress
The blood oxygen-level dependent (BOLD) functional magnetic resonance imaging (fMRI) signal depends on an interplay of cerebral blood flow (CBF), oxygen metabolism, and cerebral blood volume. Despite wide usage of BOLD fMRI, it is not clear how these physiological components create the BOLD signal. Here, baseline CBF and its dynamics evoked by a brief stimulus (2 s) in human visual cortex were measured at 3T. We found a stereotypical CBF response: immediate increase, rising to...

Trends in International Mathematics and Science Study (TIMSS) 2011: Mathematics teacher background questionnaire (BTM) - South Africa as one of more than 60 countries

Vijiyaluxmi Reddy & Department Of Basic Education, Human Sciences Research Council
Description: This dataset contains the responses of mathematics teachers when asked questions referring to the teaching and learning provided to learners as well as their perceptions of the school in which they teach. This data set has 199 variables and 327 cases. Abstract: TIMSS is a cross-national assessment of mathematics and science knowledge of fourth and eighth grades. It is conducted by the International Association for the Evaluation of Educational Achievement (IEA) every four years...

Registration Year

  • 2004
    21
  • 2005
    99,092
  • 2006
    70,301
  • 2007
    33,870
  • 2008
    24,013
  • 2009
    76,385
  • 2010
    331,477
  • 2011
    152,646
  • 2012
    457,594
  • 2013
    470,904
  • 2014
    1,415,843
  • 2015
    1,828,714
  • 2016
    2,182,475
  • 2017
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  • 2018
    3,568,385
  • 2019
    2,328,357

Resource Types

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Data Centers

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    844,955
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    801,414
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    707,096
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    373,193
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    319,039