cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.5066/p9o8r6d1
title: Wall diffuser velocity effects on American Shad (Alosa sapidissima) inside a fishway entrance channel

description: In this dataset, there are six csv files that provide the raw fish behavior telemetry data and a single csv file that provides the processed velocity data.
DOI: 10.15468/dl.7ttjk2
title: Occurrence Download

description: A dataset containing 325 species occurrences available in GBIF matching the query:
{
 "and" : [
 "Country is Mexico",
 "Geometry POLYGON((-97.15612 19.68231,-97.19161 19.49657,-97.18214 19.3546,-97.0804 19.30609,-96.94316 19.32384,-96.81302 19.41612,-96.75505 19.52496,-96.70063 19.6066,-96.68525 19.67995,-96.77161 19.73555,-96.94079 19.732,-97.0804 19.69296,-97.15612 19.68231))",
 "HasCoordinate is true",
 "HasGeospatialIssue is false",
 "PublishingOrg is one of (7b8aff00-a9f8-11d8-944b-b8a03c50a862, ff90b050-c256-11db-b71b-b8a03c50a862, fd70f580-4ce2-11db-b80e-b8a03c50a862, b459e790-0d3c-11d9-8431-b8a03c50a862, 66522820-055c-11d8-b84e-b8a03c50a862, c361e830-181e-11da-9544-b8a03c50a862, 84cee304-27b4-4ad0-9068-16b666e5b1b5, 2b8e48b0-812d-11de-86fe-b8a03c50a862, b554c320-0560-11d8-b851-b8a03c50a862)",
 "TaxonKey is Peromyscus furvus"
 ]
}

 The dataset includes 325 records from 18 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0042424-251120083545085/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.5281/zenodo.17216288
title: High-Resolution Climate and Vegetation Index Dataset for 21 Pacific Island Countries and Territories Derived from ERA5 and MODIS (2011-2020)

description: This dataset provides comprehensive weekly climate and vegetation data for 21 Pacific Island Countries and Territories (PICTs) spanning from 2011 to 2020. The dataset was specifically designed to support environmental and health research in small island developing states.

Spatial Coverage:21 Pacific Island Countries and Territories including American Samoa, Cook Islands, Fiji, French Polynesia, Guam, Kiribati, Marshall Islands, Micronesia, Nauru, New Caledonia, Niue, Northern Mariana Islands, Palau, Papua New Guinea, Pitcairn Islands, Samoa, Solomon Islands, Tonga, Tuvalu, Vanuatu, and Wallis & Futuna.

Temporal Coverage:Weekly data from 2011 to 2020 (52 weeks per year, 10 years total) (will be fixed later)

Data Variables:- Temperature metrics: mean, maximum, and minimum weekly temperatures (°C)- Precipitation data: average, total, minimum, and maximum weekly precipitation (mm)- Vegetation indices: 8-day and processed NDVI values- Land cover information (will be fixed later)

Data Sources and Processing:- Climate data extracted from ECMWF ERA5 Daily Aggregates dataset via Google Earth Engine- Vegetation data from MODIS MOD09A1.061 Terra Surface Reflectance 8-Day Global 500m- City coordinates from Basic World Cities Database (v1.77)- 1000m buffer zones applied around populated city centroids- Population-weighted aggregation for each country- NDVI data processed using Harmonic Analysis of Time Series (HANTS) smoothing algorithm

Applications:This dataset is particularly valuable for:- Climate change impact assessment in Pacific islands- Environmental health research- Epidemiological studies- Agricultural and ecological modeling- Climate trend analysis for small island developing states

File Format:Excel format (.xlsx) with structured weekly time series data

Quality Assurance:Data processed using established remote sensing and climatological methods with appropriate spatial and temporal aggregation for the unique geographic characteristics of Pacific Island nations.
DOI: 10.5281/zenodo.17838697
title: High-Resolution Climate and Vegetation Index Dataset for 21 Pacific Island Countries and Territories Derived from ERA5 and MODIS (2011-2020)

description: This dataset provides comprehensive weekly climate and vegetation data for 21 Pacific Island Countries and Territories (PICTs) spanning from 2011 to 2020. The dataset was specifically designed to support environmental and health research in small island developing states.

Spatial Coverage:21 Pacific Island Countries and Territories including American Samoa, Cook Islands, Fiji, French Polynesia, Guam, Kiribati, Marshall Islands, Micronesia, Nauru, New Caledonia, Niue, Northern Mariana Islands, Palau, Papua New Guinea, Pitcairn Islands, Samoa, Solomon Islands, Tonga, Tuvalu, Vanuatu, and Wallis & Futuna.

Temporal Coverage:Weekly data from 2011 to 2020 (52 weeks per year, 10 years total) (will be fixed later)

Data Variables:- Temperature metrics: mean, maximum, and minimum weekly temperatures (°C)- Precipitation data: average, total, minimum, and maximum weekly precipitation (mm)- Vegetation indices: 8-day and processed NDVI values- Land cover information (will be fixed later)

Data Sources and Processing:- Climate data extracted from ECMWF ERA5 Daily Aggregates dataset via Google Earth Engine- Vegetation data from MODIS MOD09A1.061 Terra Surface Reflectance 8-Day Global 500m- City coordinates from Basic World Cities Database (v1.77)- 1000m buffer zones applied around populated city centroids- Population-weighted aggregation for each country- NDVI data processed using Harmonic Analysis of Time Series (HANTS) smoothing algorithm

Applications:This dataset is particularly valuable for:- Climate change impact assessment in Pacific islands- Environmental health research- Epidemiological studies- Agricultural and ecological modeling- Climate trend analysis for small island developing states

File Format:Excel format (.xlsx) with structured weekly time series data

Quality Assurance:Data processed using established remote sensing and climatological methods with appropriate spatial and temporal aggregation for the unique geographic characteristics of Pacific Island nations.
DOI: 10.15468/dl.vxfwxx
title: Occurrence Download

description: A dataset containing 1342 species occurrences available in GBIF matching the query:
{
 "and" : [
 "Geometry POLYGON ((150.223990 -32.426431, 150.180379 -32.384333, 150.126302 -32.384333, 150.169897 -32.426431, 150.223990 -32.426431))",
 "HasCoordinate is true",
 "HasGeospatialIssue is false",
 "Year is greater than or equal to 2015",
 "Year is less than or equal to 2025"
 ]
}

 The dataset includes 1342 records from 9 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0042425-251120083545085/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.cvvx4h
title: Occurrence Download

description: A dataset containing 8 species occurrences available in GBIF matching the query:
{
 "and" : [
 "TaxonKey is Amphitrite brunnea",
 "HasCoordinate is true",
 "HasGeospatialIssue is false"
 ]
}

 The dataset includes 8 records from 2 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0042428-251120083545085/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.8kzgch
title: Occurrence Download

description: A dataset containing 0 species occurrences available in GBIF matching the query:
{"type":"and","predicates":[{"type":"within","geometry":"POLYGON ((100.024 2.264179, 99.953683 2.25861, 99.885098 2.242042, 99.819937 2.214882, 99.759804 2.1778, 99.706181 2.131709, 99.660388 2.077746, 99.623552 2.017239, 99.59658 1.951679, 99.580134 1.882681, 99.574619 1.811944, 99.580169 1.741209, 99.596645 1.672219, 99.623642 1.606671, 99.660494 1.54618, 99.706292 1.492233, 99.75991 1.44616, 99.820027 1.409093, 99.885164 1.381945, 99.953717 1.365385, 100.024 1.359819, 100.094283 1.365385, 100.162836 1.381945, 100.227973 1.409093, 100.28809 1.44616, 100.341708 1.492233, 100.387506 1.54618, 100.424358 1.606671, 100.451355 1.672219, 100.467831 1.741209, 100.473381 1.811944, 100.467866 1.882681, 100.45142 1.951679, 100.424448 2.017239, 100.387612 2.077746, 100.341819 2.131709, 100.288196 2.1778, 100.228063 2.214882, 100.162902 2.242042, 100.094317 2.25861, 100.024 2.264179))"},{"type":"equals","key":"CLASS_KEY","value":"212","matchCase":false},{"type":"greaterThanOrEquals","key":"YEAR","value":"2015","matchCase":false},{"type":"not","predicate":{"type":"in","key":"BASIS_OF_RECORD","values":["MATERIAL_CITATION","MATERIAL_SAMPLE","PRESERVED_SPECIMEN"],"matchCase":false}},{"type":"lessThanOrEquals","key":"COORDINATE_UNCERTAINTY_IN_METERS","value":"10000","matchCase":false},{"type":"equals","key":"LICENSE","value":"CC BY 4.0","matchCase":false}]}

 The dataset includes 0 records from 0 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0042427-251120083545085/datasets/export for details.
DOI: 10.20783/dias.jle.2
title: Long-term hydrochemical monitoring in Oyasan Experimental Forest Watershed comprised of two small forested watersheds of Japanese cedar and Japanese cypress

description: Forest ecosystems are self-fertilizing systems, and development of forest stands depends on nutrient supply via biogeochemical cycling within the ecosystem. Therefore, it is important to clarify the nutrient cycle, mediating growth and development. In addition, long-term hydrochemical monitoring is needed to understand the influence of environmental changes on biogeochemical cycling in the forest ecosystem.

The Oyasan Experimental Forest Watershed (OEFW) is located in the Field Museum Oyasan, the university forest of Tokyo University of Agriculture and Technology, in Gunma prefecture, Japan. OEFW comprises two small adjacent forested watersheds, which are A-watershed and B-watershed, with respective areas of 1.3 ha and 1.8 ha.

A-watershed is a reestablished forest planted with sugi (Japanese cedar; Cryptomeria japonica) and hinoki (Japanese cypress; Chamaecyparis obtusa) in 1976, and has been managed intensively with fertilizer application. By contrast, B-watershed is an established forest planted with sugi and hinoki in 1907. No forest practices have been carried out except for the thinning of suppressed trees in 1983. However, the sugi plantation on the lowest slope (18% of the watershed area) was cut in 2000, and sugi was replanted the following year.

In this data paper, we present data on the daily precipitation, discharge, pH, and concentrations of major nutrients (Ca2+, Mg2+, K+, Na+, NH4+, Cl-, NO3-, and SO42-) in rainwater and stream water since November 1978.

The arithmetical mean pH of precipitation, stream water in A and B watershed from the beginning of the monitoring to the present were 4.77±0.67, 6.85±0.41 and 6.88±0.36 (average±S.D.), respectively. The arithmetical mean concentrations in precipitation in mmolc L-1 were 0.030±0.030 for Ca2+, 0.010±0.011 for Mg2+, 0.009±0.013 for K+, 0.020±0.024 for Na+, 0.035±0.041 for NH4+, 0.026±0.029 for Cl-, 0.033±0.038 for NO3-, and 0.046±0.043 for SO42-. The mean concentrations in stream water in A-watershed were 0.180±0.032 for Ca2+, 0.073±0.013 for Mg2+, 0.018±0.009 for K+, 0.182±0.024 for Na+, 0.010±0.010 for NH4+, 0.060±0.008 for Cl-, 0.111±0.038 for NO3-, and 0.074±0.012 for SO42-; whereas for B-watershed the mean concentrations were 0.169±0.025 for Ca2+, 0.079±0.016 for Mg2+, 0.018±0.005 for K+, 0.192±0.026 for Na+, 0.010±0.010 for NH4+, 0.065±0.010 for Cl-, 0.093±0.025 for NO3-, and 0.087±0.011 for SO42-.
DOI: 10.15468/dl.zep55g
title: Occurrence Download

description: A dataset containing 3020 species occurrences available in GBIF matching the query:
{
 "and" : [
 "TaxonKey is Pericopsis laxiflora",
 "Continent is Africa"
 ]
}

 The dataset includes 3020 records from 101 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0042426-251120083545085/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.17026/ar/8hggde
title: PAN-00165623 - deck

description: &lt;p&gt;This find is registered at Portable Antiquities of the Netherlands with number PAN-00165623&lt;/p&gt;
description: Modified: 2025-09-22T15:10:01+02:00
DOI: 10.15468/dl.xs2uy3
title: Occurrence Download

description: A dataset containing 1463880 species occurrences available in GBIF matching the query:
{
 "and" : [
 "BasisOfRecord is Specimen",
 "Continent is North America",
 "HasCoordinate is true",
 "HasGeospatialIssue is false",
 "IucnRedListCategory is one of (EW, CR, EN, VU, NT, LC, DD, NE)",
 "OccurrenceStatus is Present",
 "TaxonKey is Mammalia"
 ]
}

 The dataset includes 1463880 records from 255 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0042408-251120083545085/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.5281/zenodo.17859575
title: Reproducibility Archive: UIS Framework, Page–CP Theorem, and Informational Tensor Pipelines (v1.0)

description: This repository contains the full reproducibility package accompanying the manuscript “Informational Tensor Dynamics and Unified Scaling Across Gravitational-Wave, Shadow, and Echo Channels”. The archive provides all numerical scripts, processing pipelines, and data products required to reproduce the results reported in the paper, including the finite-memory Volterra evolution of the informational tensor , the Page–CP correspondence tests, and the derivation and evaluation of the Unified Informational Scaling (UIS) relations.

The package includes:

1. Core Python modules implementing

the slow-sector Volterra kernel,

KMS-weighted inner products,

the informational flux scalar ,

CP-divisibility diagnostics,

and the reconstruction of the informational tensor .

 

2. UIS evaluation scripts for computing

quasi-normal-mode frequency shifts,

black-hole shadow deformations,

and echo time delays,using the dimensionless susceptibilities , , and .

 

3. GW150914-like test dataset and a complete workflow reproducing all figures reported in the manuscript, including uncertainty estimates and numerical stability checks.

4. Automated build and verification utilities, enabling strict reproducibility of all numerical outputs, with SHA-256 checksums and environment specifications.

 

This release (v1.0.0) serves as the initial reproducibility version intended for peer review in Classical and Quantum Gravity (CQG). All files in this archive can be executed independently of the manuscript, and the structure of the package mirrors the organization of the theoretical and numerical sections of the paper.
DOI: 10.5281/zenodo.17859574
title: Reproducibility Archive: UIS Framework, Page–CP Theorem, and Informational Tensor Pipelines (v1.0)

description: This repository contains the full reproducibility package accompanying the manuscript “Informational Tensor Dynamics and Unified Scaling Across Gravitational-Wave, Shadow, and Echo Channels”. The archive provides all numerical scripts, processing pipelines, and data products required to reproduce the results reported in the paper, including the finite-memory Volterra evolution of the informational tensor , the Page–CP correspondence tests, and the derivation and evaluation of the Unified Informational Scaling (UIS) relations.

The package includes:

1. Core Python modules implementing

the slow-sector Volterra kernel,

KMS-weighted inner products,

the informational flux scalar ,

CP-divisibility diagnostics,

and the reconstruction of the informational tensor .

 

2. UIS evaluation scripts for computing

quasi-normal-mode frequency shifts,

black-hole shadow deformations,

and echo time delays,using the dimensionless susceptibilities , , and .

 

3. GW150914-like test dataset and a complete workflow reproducing all figures reported in the manuscript, including uncertainty estimates and numerical stability checks.

4. Automated build and verification utilities, enabling strict reproducibility of all numerical outputs, with SHA-256 checksums and environment specifications.

 

This release (v1.0.0) serves as the initial reproducibility version intended for peer review in Classical and Quantum Gravity (CQG). All files in this archive can be executed independently of the manuscript, and the structure of the package mirrors the organization of the theoretical and numerical sections of the paper.
DOI: 10.15468/dl.n4mtnf
title: Occurrence Download

description: A dataset containing 245 species occurrences available in GBIF matching the query:
{
 "and" : [
 "TaxonKey is Amphitrite ornata",
 "HasCoordinate is true",
 "HasGeospatialIssue is false"
 ]
}

 The dataset includes 245 records from 19 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0042430-251120083545085/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.tgm4cr
title: Occurrence Download

description: A dataset containing 496 species occurrences available in GBIF matching the query:
{
 "and" : [
 "TaxonKey is Persicaria limbata",
 "Continent is Africa"
 ]
}

 The dataset includes 496 records from 34 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0042432-251120083545085/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.aqz8ah
title: Occurrence Download

description: A dataset containing 9147 species occurrences available in GBIF matching the query:
{
 "and" : [
 "Geometry POLYGON ((152.370510 -32.568634, 152.317186 -32.518157, 152.252323 -32.518157, 152.305625 -32.568634, 152.370510 -32.568634))",
 "HasCoordinate is true",
 "HasGeospatialIssue is false",
 "Year is greater than or equal to 2015",
 "Year is less than or equal to 2025"
 ]
}

 The dataset includes 9147 records from 14 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0042429-251120083545085/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.dncf3t
title: Occurrence Download

description: A dataset containing 0 species occurrences available in GBIF matching the query:
{"type":"and","predicates":[{"type":"within","geometry":"POLYGON ((100.398 2.266179, 100.327683 2.26061, 100.259098 2.244042, 100.193937 2.216882, 100.133804 2.1798, 100.08018 2.133709, 100.034387 2.079746, 99.997551 2.019239, 99.970579 1.953679, 99.954134 1.884681, 99.94861899999999 1.813944, 99.954168 1.743209, 99.970645 1.674219, 99.997642 1.608671, 100.034493 1.54818, 100.080292 1.494233, 100.13391 1.44816, 100.194027 1.411093, 100.259164 1.383945, 100.327717 1.367385, 100.398 1.361819, 100.468283 1.367385, 100.536836 1.383945, 100.601973 1.411093, 100.66209 1.44816, 100.715708 1.494233, 100.761507 1.54818, 100.798358 1.608671, 100.825355 1.674219, 100.841832 1.743209, 100.847381 1.813944, 100.841866 1.884681, 100.825421 1.953679, 100.798449 2.019239, 100.761613 2.079746, 100.71582 2.133709, 100.662196 2.1798, 100.602063 2.216882, 100.536902 2.244042, 100.468317 2.26061, 100.398 2.266179))"},{"type":"equals","key":"CLASS_KEY","value":"212","matchCase":false},{"type":"greaterThanOrEquals","key":"YEAR","value":"2015","matchCase":false},{"type":"not","predicate":{"type":"in","key":"BASIS_OF_RECORD","values":["MATERIAL_CITATION","MATERIAL_SAMPLE","PRESERVED_SPECIMEN"],"matchCase":false}},{"type":"lessThanOrEquals","key":"COORDINATE_UNCERTAINTY_IN_METERS","value":"10000","matchCase":false},{"type":"equals","key":"LICENSE","value":"CC BY 4.0","matchCase":false}]}

 The dataset includes 0 records from 0 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0042431-251120083545085/datasets/export for details.
DOI: 10.17026/ar/3azim4
title: PAN-00178752 - one-ribbed ring shape of La Tène glass variant H3a

description: &lt;p&gt;This find is registered at Portable Antiquities of the Netherlands with number PAN-00178752&lt;/p&gt;
description: Modified: 2025-08-27T14:37:12+02:00
DOI: 10.34740/kaggle/dsv/14079482
title: Berita UNPAM
DOI: 10.7910/dvn/axapwo
title: 基于超导磁控与物理信息神经网络的无推进剂轨道机动系统
title: Propellant-Less Orbital Maneuvering System with Superconducting Magnet Control and Physics-Informed Neural Networks for Autonomous Satellites

description: 本文提出了一种革命性的无推进剂轨道机动系统(OMS),通过高温度超导(HTS)磁线圈、压电质量位移执行器和物理信息神经网络(PINNs)的协同集成,实现理论上无限的卫星寿命。基于专利申请“Propellantloses Orbitalmanovriersystem mit supraleitender Magnetfeldsteuerung und physics-informed neural network für autonome Satelliten”(DE 10 2025 002 893.8),本工作提供了该专利系统架构的全面技术分析、仿真验证和性能表征。 该系统通过智能地与自然力场(如地球磁层、太阳辐射压和引力梯度)相互作用,实现了亚毫角秒的姿态控制精度(&lt;0.001°)和每年100米的delta-v能力,且无需消耗推进剂。该创新结合了(1)在77 K下工作的YBCO超导线圈,以Halbach阵列形式产生高达10,000 A·m²的磁偶极矩,(2)具有10 nm位移精度的PMN-PT压电执行器,用于内部动量交换,以及(3)一个包含八层、每层1024个神经元的深度神经网络,通过物理信息学习进行训练,以在多体环境中优化控制的同时遵守守恒定律(哈密顿力学、麦克斯韦和泊松方程)。 仿真结果表明,一个25 kg的微卫星在低地球轨道上仅消耗45 W功率,即可维持超过50年的三轴姿态,指向误差小于0.0008°,每年轨道修正100米。本工作为无推进剂航天器奠定了基础,对编队飞行、碎片规避和超出补给范围的长期任务具有变革性潜力。
DOI: 10.15468/dl.k9uj7w
title: Occurrence Download

description: A dataset containing 58 species occurrences available in GBIF matching the query:
{
 "and" : [
 "TaxonKey is Ancistrosyllis carolinensis",
 "HasCoordinate is true",
 "HasGeospatialIssue is false"
 ]
}

 The dataset includes 58 records from 4 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0042433-251120083545085/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.15468/dl.64mhqx
title: Occurrence Download

description: A dataset containing 1529 species occurrences available in GBIF matching the query:
{
 "and" : [
 "TaxonKey is Persicaria madagascariensis",
 "Continent is Africa"
 ]
}

 The dataset includes 1529 records from 30 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0042434-251120083545085/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.
DOI: 10.17026/ar/fiuq6e
title: PAN-00124550 - coin/coin-related, Henry III (1216-1272), long-cross penny

description: &lt;p&gt;This find is registered at Portable Antiquities of the Netherlands with number PAN-00124550&lt;/p&gt;
description: Modified: 2025-10-24T08:13:56+02:00
DOI: 10.5281/zenodo.15763907
title: Korean Eateries in London – Spatial Dataset for GWR Analysis
title: Ethnic Eateries as Intercultural Third Places: Mapping Korean Foodscapes in Multicultural London
DOI: 10.5281/zenodo.15763908
title: Korean Eateries in London – Spatial Dataset for GWR Analysis
title: Ethnic Eateries as Intercultural Third Places: Mapping Korean Foodscapes in Multicultural London
DOI: 10.15468/dl.s2bxhf
title: Occurrence Download

description: A dataset containing 2403 species occurrences available in GBIF matching the query:
{
 "and" : [
 "Geometry POLYGON ((152.413612 -32.520215, 152.361515 -32.470821, 152.298052 -32.470821, 152.350128 -32.520215, 152.413612 -32.520215))",
 "HasCoordinate is true",
 "HasGeospatialIssue is false",
 "Year is greater than or equal to 2015",
 "Year is less than or equal to 2025"
 ]
}

 The dataset includes 2403 records from 9 constituent datasets; see https://api.gbif.org/v1/occurrence/download/0042436-251120083545085/datasets/export for details.
 
Data from some individual datasets included in this download may be licensed under less restrictive terms.