cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.15468/dl.enu69f
title: Occurrence Download

description: A dataset containing 52 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Hopea helferi (Dyer) Brandis"
 ]
}

 The dataset includes 52 records from 12 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0016082-241107131044228/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.17632/dhgv95vfgf
title: Classroom Indoor Air Quality Time Series — Bangladesh, 2024 – 2025

description: This dataset contains indoor classroom air-quality measurements collected by a custom sensor node in Bangladesh from 2024-09-25 19:25 to 2025-04-07 20:25. The system was deployed in a university classroom measuring 12.30 m × 6.95 m × 3.10 m with a partial false ceiling at 2.90 m. The room has no operable windows or mechanical ventilation; outside air enters primarily through a 21.4 cm × 46.8 cm louvered grille in the door. A curtain-wall window and a wall-mounted AC unit are present; the AC was used intermittently. This minimally ventilated setting enables clear observation of CO₂ accumulation and particulate dynamics during occupancy.

The dataset contains 52,259 records, representing 93.51% of the theoretical 5-minute schedule over the collection window. Several multi-hour gaps exist (e.g., 2025-03-22 03:30 → 2025-03-23 22:40, ~43.2 h), consistent with temporary power or network interruptions, not a change in the sampling methodology.

Variables (units): Timestamp (local, Asia/Dhaka, UTC+06:00); CO2 (ppm); pm1, pm2_5, pm10 (µg/m³); air_temperature (°C); humidity (%); air_pressure (Pa); deviceId; payload_id. 
A machine-readable data dictionary "MendeleyData_data_dictionary.csv" is provided.

Instrumentation & calibration: The node integrates an MH-Z19B NDIR CO₂ sensor, a PMS5003 optical particle counter for PM, an SHT35 for temperature and humidity, and a BMP280 pressure sensor. Each sensor undergoes a standard stabilization period after power-up, is checked for offset/span consistency against manufacturer specifications, and is periodically co-located with a reference monitor (IQAir AirVisual Pro) to verify PM₂.₅, CO₂, and temperature agreement. Data quality is maintained through routine inspection of time-series behavior, health/status flags, and scheduled co-location checks to detect drift over the deployment.

Processing & quality control: Minimal yet transparent handling preserved raw integrity while ensuring usability. All data entries were chronologically sorted by timestamp and scanned for duplicate entries based on timestamp and device ID, with no duplicates detected. No resampling, interpolation, smoothing, or artificial gap-filling was applied at any stage. Instead, the dataset retains its original granularity, allowing downstream users to apply their own thresholds and filtering logic. Basic anomaly detection was conducted through descriptive checks without excluding such records from the dataset.

Intended use & limitations: Suitable for analyses of indoor ventilation, occupancy proxies (CO₂), episodic PM behavior, diurnal patterns, and time-series modeling. However, as data is from a single room, it may not represent conditions in other indoor spaces. PM₂.₅ readings may be affected by humidity. The room's location is approximate to protect privacy.

Further documentation: Classroom characteristics (Section 2.2) and sensor calibration & QA (Section 3.4) are detailed in the IUB repository: https://ar.iub.edu.bd/handle/11348/992
DOI: 10.15468/dl.zx42tn
title: Occurrence Download

description: A dataset containing 48 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Hopea hainanensis Merr. & Chun"
 ]
}

 The dataset includes 48 records from 22 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0016078-241107131044228/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.kqrfe9
title: Occurrence Download

description: A dataset containing 116 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Hopea griffithii Kurz"
 ]
}

 The dataset includes 116 records from 14 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0016074-241107131044228/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.w5td95
title: Occurrence Download

description: A dataset containing 8 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Hopea glaucescens Symington"
 ]
}

 The dataset includes 8 records from 4 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0016068-241107131044228/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.17632/dhgv95vfgf.2
title: Classroom Indoor Air Quality Time Series — Bangladesh, 2024 – 2025

description: This dataset contains indoor classroom air-quality measurements collected by a custom sensor node in Bangladesh from 2024-09-25 19:25 to 2025-04-07 20:25. The system was deployed in a university classroom measuring 12.30 m × 6.95 m × 3.10 m with a partial false ceiling at 2.90 m. The room has no operable windows or mechanical ventilation; outside air enters primarily through a 21.4 cm × 46.8 cm louvered grille in the door. A curtain-wall window and a wall-mounted AC unit are present; the AC was used intermittently. This minimally ventilated setting enables clear observation of CO₂ accumulation and particulate dynamics during occupancy.

The dataset contains 52,259 records, representing 93.51% of the theoretical 5-minute schedule over the collection window. Several multi-hour gaps exist (e.g., 2025-03-22 03:30 → 2025-03-23 22:40, ~43.2 h), consistent with temporary power or network interruptions, not a change in the sampling methodology.

Variables (units): Timestamp (local, Asia/Dhaka, UTC+06:00); CO2 (ppm); pm1, pm2_5, pm10 (µg/m³); air_temperature (°C); humidity (%); air_pressure (Pa); deviceId; payload_id. 
A machine-readable data dictionary "MendeleyData_data_dictionary.csv" is provided.

Instrumentation & calibration: The node integrates an MH-Z19B NDIR CO₂ sensor, a PMS5003 optical particle counter for PM, an SHT35 for temperature and humidity, and a BMP280 pressure sensor. Each sensor undergoes a standard stabilization period after power-up, is checked for offset/span consistency against manufacturer specifications, and is periodically co-located with a reference monitor (IQAir AirVisual Pro) to verify PM₂.₅, CO₂, and temperature agreement. Data quality is maintained through routine inspection of time-series behavior, health/status flags, and scheduled co-location checks to detect drift over the deployment.

Processing & quality control: Minimal yet transparent handling preserved raw integrity while ensuring usability. All data entries were chronologically sorted by timestamp and scanned for duplicate entries based on timestamp and device ID, with no duplicates detected. No resampling, interpolation, smoothing, or artificial gap-filling was applied at any stage. Instead, the dataset retains its original granularity, allowing downstream users to apply their own thresholds and filtering logic. Basic anomaly detection was conducted through descriptive checks without excluding such records from the dataset.

Intended use & limitations: Suitable for analyses of indoor ventilation, occupancy proxies (CO₂), episodic PM behavior, diurnal patterns, and time-series modeling. However, as data is from a single room, it may not represent conditions in other indoor spaces. PM₂.₅ readings may be affected by humidity. The room's location is approximate to protect privacy.

Further documentation: Classroom characteristics (Section 2.2) and sensor calibration & QA (Section 3.4) are detailed in the IUB repository: https://ar.iub.edu.bd/handle/11348/992
DOI: 10.17632/dyym4d7sm6
title: EE, PE and IWB

description: This is regarding a study on impact of employee engagement on innovative work behavior with pyschological empowerment as a mediator.
DOI: 10.15468/dl.9xfce4
title: Occurrence Download

description: A dataset containing 33 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Hopea glabra Wight & Arn."
 ]
}

 The dataset includes 33 records from 11 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0016029-241107131044228/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.req3cp
title: Occurrence Download

description: A dataset containing 175 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Hopea ferruginea Parijs"
 ]
}

 The dataset includes 175 records from 16 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0016024-241107131044228/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.17632/dyym4d7sm6.1
title: EE, PE and IWB

description: This is regarding a study on impact of employee engagement on innovative work behavior with pyschological empowerment as a mediator.
DOI: 10.15468/dl.eek8cg
title: Occurrence Download

description: A dataset containing 182 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Hopea ferrea Laness."
 ]
}

 The dataset includes 182 records from 19 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0016021-241107131044228/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.qhsjuh
title: Occurrence Download

description: A dataset containing 1 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Hopea exalata W.T.Lin, Y.Y.Yang & Q.S.Hsue"
 ]
}

 The dataset includes 1 records from 1 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0016019-241107131044228/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.25574/25812
title: Chandra X-ray Observatory ObsId 25812

description: eROSITA NORMAL GALAXIES IN THE FINAL EQUATORIAL DEPTH SURVEY FIELD (EFEDS)
DOI: 10.15468/dl.mk42hj
title: Occurrence Download

description: A dataset containing 17 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Hopea erosa (Bedd.) Slooten"
 ]
}

 The dataset includes 17 records from 7 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0016014-241107131044228/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.3r4njn
title: Occurrence Download

description: A dataset containing 157 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Hopea dyeri F.Heim"
 ]
}

 The dataset includes 157 records from 12 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0016011-241107131044228/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.aypm5r
title: Occurrence Download

description: A dataset containing 456 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Hopea dryobalanoides Miq."
 ]
}

 The dataset includes 456 records from 17 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0016008-241107131044228/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.ehvt4w
title: Occurrence Download

description: A dataset containing 28 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Hopea discolor Thwaites"
 ]
}

 The dataset includes 28 records from 11 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0016005-241107131044228/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.ws3r2p
title: Occurrence Download

description: A dataset containing 48 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Hopea coriacea Burck"
 ]
}

 The dataset includes 48 records from 7 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0016000-241107131044228/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.cw5a5x
title: Occurrence Download

description: A dataset containing 46 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Hopea chinensis (Merr.) Hand.-Mazz."
 ]
}

 The dataset includes 46 records from 10 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0015995-241107131044228/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.u3knuu
title: Occurrence Download

description: A dataset containing 41 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Hopea cordifolia (Thwaites) Trimen"
 ]
}

 The dataset includes 41 records from 11 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0015998-241107131044228/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.25574/26862
title: Chandra X-ray Observatory ObsId 26862

description: X-ray confirmation of optically selected IMBH-powered AGN and high-resolution imaging of their host galaxies
DOI: 10.15468/dl.eq9rua
title: Occurrence Download

description: A dataset containing 136 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Hopea cernua Teijsm. & Binn."
 ]
}

 The dataset includes 136 records from 13 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0015993-241107131044228/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.39r3pt
title: Occurrence Download

description: A dataset containing 35 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Hopea centipeda P.S.Ashton"
 ]
}

 The dataset includes 35 records from 7 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0015990-241107131044228/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.472kz9
title: Occurrence Download

description: A dataset containing 23 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Hopea celtidifolia Kosterm."
 ]
}

 The dataset includes 23 records from 5 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0015987-241107131044228/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.c4mr8z
title: Occurrence Download

description: A dataset containing 63 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Hopea celebica Burck"
 ]
}

 The dataset includes 63 records from 10 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0015981-241107131044228/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.pduuqm
title: Occurrence Download

description: A dataset containing 15 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Hopea canarensis Hole"
 ]
}

 The dataset includes 15 records from 6 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0015979-241107131044228/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.364yqh
title: Occurrence Download

description: A dataset containing 59 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Hopea brevipetiolaris (Thwaites) P.S.Ashton"
 ]
}

 The dataset includes 59 records from 10 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0015975-241107131044228/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.2rxhwm
title: Occurrence Download

description: A dataset containing 130 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Hopea bracteata Burck"
 ]
}

 The dataset includes 130 records from 14 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0015972-241107131044228/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.hb7824
title: Occurrence Download

description: A dataset containing 15 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Hopea bilitonensis P.S.Ashton"
 ]
}

 The dataset includes 15 records from 4 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0015964-241107131044228/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.uvarmg
title: Occurrence Download

description: A dataset containing 261 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Hopea beccariana Burck"
 ]
}

 The dataset includes 261 records from 16 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0015961-241107131044228/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.ydwast
title: Occurrence Download

description: A dataset containing 13 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Hopea auriculata Foxw."
 ]
}

 The dataset includes 13 records from 4 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0015957-241107131044228/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.4b7wbx
title: Occurrence Download

description: A dataset containing 49 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Hopea apiculata Symington"
 ]
}

 The dataset includes 49 records from 8 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0015955-241107131044228/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.wjt4y8
title: Occurrence Download

description: A dataset containing 96 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Doona zeylanica Thwaites"
 ]
}

 The dataset includes 96 records from 19 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0015847-241107131044228/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.y4b8xd
title: Occurrence Download

description: A dataset containing 83 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Doona venulosa Thwaites"
 ]
}

 The dataset includes 83 records from 13 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0015842-241107131044228/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.75kyhv
title: Occurrence Download

description: A dataset containing 863992 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Viruses"
 ]
}

 The dataset includes 863992 records from 70 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0003823-250914085247600/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.yjqypj
title: Occurrence Download

description: A dataset containing 93 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Doona trapezifolia Thwaites"
 ]
}

 The dataset includes 93 records from 15 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0015836-241107131044228/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.sp5jhb
title: Occurrence Download

description: A dataset containing 47 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Doona ovalifolia Thwaites"
 ]
}

 The dataset includes 47 records from 15 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0015829-241107131044228/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.rwmtpq
title: Occurrence Download

description: A dataset containing 64739 species occurrences available in GBIF matching the query:
{
 "and" : [
 "TaxonKey is Vespa velutina nigrithorax",
 "HasGeospatialIssue is false",
 "HasCoordinate is true",
 "OccurrenceStatus is Present",
 {
 "not" : {
 "BasisOfRecord" : [
 "is one of (Fossil)"
 ]
 }
 }
 ]
}

 The dataset includes 64739 records from 181 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0003816-250914085247600/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.bwwx7j
title: Occurrence Download

description: A dataset containing 87 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Doona gardneri Thwaites"
 ]
}

 The dataset includes 87 records from 15 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0015825-241107131044228/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.17632/zycxv6ygvp
title: Data for: PROBLEMS OF TEACHING METHODOLOGY IN E-LEARNING

description: I agree
DOI: 10.15468/dl.ubnuan
title: Occurrence Download

description: A dataset containing 41 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Doona disticha (Thwaites) Pierre"
 ]
}

 The dataset includes 41 records from 12 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0015818-241107131044228/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.17632/zycxv6ygvp.2
title: Data for: PROBLEMS OF TEACHING METHODOLOGY IN E-LEARNING

description: I agree
DOI: 10.15468/dl.hbtdv9
title: Occurrence Download

description: A dataset containing 137 species occurrences available in GBIF matching the query:
{
 "TaxonKey" : [
 "is Doona cordifolia Thwaites"
 ]
}

 The dataset includes 137 records from 16 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0015815-241107131044228/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.