筛选
科学数据
统计数据
共检索到745条 ,权限内显示50条;
The role of educational leadership on participation in the National Program of Science and Technology Fairs at Highland Primary School in the Valley
- 负责人:
- DOI:
- doi:10.25549/usctheses-c40-240813
- 摘要:
- placed challenges on the educational system to develop students with 21st-century skills. In response, the government issued National Executive Decree
Data from: Population structure leads to male-biased population sex ratios under environmental sex determination
- 负责人:
- DOI:
- doi:10.5061/dryad.448sc26
- 摘要:
- ll subpopulation sizes leading to local mate competition, a condition unlikely to be met in most ESD systems. Simulations revealed that consistent male biases ar
Data from: A global database and ‘state of the field’ review of research into ecosystem engineering by land animals.
- 负责人:
- Coggan, Nicole
- 关键词:
- functional extinction ecological function biodiversity redundancy ecological methods reintroductions conservation spatial and temporal replication conceptual framework
- DOI:
- doi:10.5061/dryad.3jj92rq
- 摘要:
- reintroductions. 5. Climate change and habitat modification will challenge the roles that engineers play in regulating ecosystems, and these will become importa
Data from: Uncovering higher-taxon diversification dynamics from clade age and species-richness data
- 负责人:
- DOI:
- doi:10.5061/dryad.2b7d5
- 摘要:
- time-dependent diversification processes. However, theory suggests that phylogenetic structure, age type (crown or stem age), and taxonomic delimitati
Data from: Automated taxonomic identification of insects with expert-level accuracy using effective feature transfer from convolutional networks
- 负责人:
- 关键词:
- DOI:
- doi:10.5061/dryad.20ch6p5
- 摘要:
- , can be highly successful in developing automated taxonomic identification systems even when training datasets are small and computational budgets limited.
Data from: Nitrogen cycling and export in California chaparral: the role of climate in shaping ecosystem responses to fire
- 负责人:
- DOI:
- doi:10.5061/dryad.5242j
- 摘要:
- rm effects of a changing climate on postfire N dynamics remain unknown. We used the ecohydrologic model RHESSys (regional hydro-ecologic simulation system) to evaluate
AGRONOMIC AND PRODUCTIVE CHARACTERISTICS OF SUNFLOWER INTERCROPPED WITH FORAGE IN A CROP-LIVESTOCK INTEGRATION SYSTEM
- 负责人:
- 关键词:
- 50211 Wildlife and Habitat Management 90899 Food Sciences not elsewhere classified 60603 Animal Physiology - Systems 140201 Agricultural Economics 100199 Agricultural Biotechnology not elsewhere classified
- DOI:
- doi:10.6084/m9.figshare.8987102.v1
- 摘要:
- in a crop-livestock integration system. The experiment was carried out in a randomized complete block design, in a 3×3 + 1 factorial scheme. Three sunflower inte
AGRONOMIC AND PRODUCTIVE CHARACTERISTICS OF SUNFLOWER INTERCROPPED WITH FORAGE IN A CROP-LIVESTOCK INTEGRATION SYSTEM
- 负责人:
- 关键词:
- 50211 Wildlife and Habitat Management 90899 Food Sciences not elsewhere classified 60603 Animal Physiology - Systems 140201 Agricultural Economics 100199 Agricultural Biotechnology not elsewhere classified
- DOI:
- doi:10.6084/m9.figshare.8987102
- 摘要:
- in a crop-livestock integration system. The experiment was carried out in a randomized complete block design, in a 3×3 + 1 factorial scheme. Three sunflower inte
Data from: Hormonal pleiotropy and the evolution of allocation trade-offs
- 负责人:
- DOI:
- doi:10.5061/dryad.6t4s455
- 摘要:
- reliant traits, this relationship should depend on the endocrine system that regulates resource allocation. Here we model changes in this system by mutati
Data from: Temporal sampling helps unravel the genetic structure of naturally occurring populations of a phytoparasitic nematode. 2. Separati
- 负责人:
- cecile.gracianne@gmail.com
- DOI:
- doi:10.5061/dryad.8g5n6
- 摘要:
- in crops and to enhance pest control strategies. We used simulations and genetic markers to investigate the spatial and temporal population genetic struc