Results 41 to 50 of about 1,170,038 (344)

Comparing Active Learning for Satellite Imagery: Contrastive Learning, Diversity, Confidence Sampling, and Cold Start Strategies

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
In this article, we investigated and compared common active learning strategies for classification and semantic segmentation tasks using satellite imagery.
David Pogorzelski, Peter Paul Arlinghaus, Wenyan Zhang   +2 more
doaj   +1 more source

Sediment Threshold

Applied Mathematical Modelling, 1999
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire   +2 more sources

Contaminated Aquatic Sediments [PDF]

Water Environment Research, 2007
A review of the literature published in 2014 relating to the assessment, evaluation and remediation of contaminated aquatic sediments is presented. The review is divided into the following sections: policy and guidance, methodology, distribution, fate and transport, bioavailability, bioaccumulation, risk, toxicity and remediation.
openaire   +10 more sources

Pollution profiling and particle size distribution within permeable paving units – with and without a geotextile [PDF]

, 2012
The aim of this paper is to investigate the sediment and pollution profiling and particle size distribution with depth within permeable paving structures, both with and without a geotextile.
Jefferies, Chris, Mullaney, Jennifer, Rikalainen, Päivi   +2 more
core   +3 more sources

Estimating specific surface area of fine stream bed sediments from geochemistry [PDF]

, 2010
Specific surface area (SSA) of headwater stream bed sediments is a fundamental property which determines the nature of sediment surface reactions and influences ecosystem-level, biological processes.
Aitchison, Appleton, B.G. Rawlins, Ballantine, Ben-Dor, Breit, Breward, Brunauer, Cardinale, Evans, Fullen, Fuller, G. Turner, G. Wildman, Galy, Horowitz, I. Mounteney, Johnson, Mainstone, Mayer, Owens, Petersen, Rawlins, Schwertmann, Wagai, Wang, Withers   +26 more
core   +2 more sources

The unpredictably eruptive dynamics of spruce budworm populations in eastern Canada

Population Ecology, EarlyView.
We examine historical population data for spruce budworm from several locations through the period 1930–1997, and use density‐dependent recruitment curves to test whether the pattern of population growth over time is more consistent with Royama's (1984; Ecological Monographs 54:429–462) linear R(t) model of harmonic oscillation at Green River New ...
Barry J. Cooke, Jacques Régnière
wiley   +1 more source

Climate change and human activities amplify runoff variability risks in lower reaches of large rivers

Communications Earth & Environment
The contributions of climate change and human activities to runoff variation have been examined in multiple individual catchments, but upstream-downstream interaction relationships remain underexplored.
Ju Gao, Chunhui Li, Xiong Zhou, Yujun Yi, Xuan Wang, Qiang Liu   +5 more
doaj   +1 more source

Between Droughts and Floods: The Seasonal Response of Freshwater Snails in Artificial Reservoirs in the Brazilian Semiarid Region

Population Ecology, EarlyView.
We investigate the seasonal dynamics of two freshwater snails, Biomphalaria straminea and Melanoides tuberculata, in artificial reservoirs of the Brazilian semiarid region. Despite regulated hydrology, B. straminea exhibited strong seasonal fluctuations associated with dry periods, while M. tuberculata maintained stable populations throughout the year,
Lucas Henrique Sousa da Silva, João Hemerson de Sousa, Adriana Josefa da Rocha, Manuella Feitosa Leal, Lucas Ariel de Sousa Aguiar, Tamaris Gimenez Pinheiro, Edson Lourenço da Silva   +6 more
wiley   +1 more source

Adaption mechanism and ecological role of CPR bacteria in brackish-saline groundwater

npj Biofilms and Microbiomes
Candidate phyla radiation (CPR) constitutes a substantial fraction of bacterial diversity, yet their survival strategies and biogeochemical roles in brackish-saline groundwater remain unknown. By reconstructing 399 CPR metagenome-assembled genomes (MAGs)
Jiawen Wang, Haohui Zhong, Qian Chen, Jinren Ni   +3 more
doaj   +1 more source

Impact of dissolved oxygen and loading rate on NH3 oxidation and N2 production mechanisms in activated sludge treatment of sewage

Microbial Biotechnology, 2021
Summary Microaerobic activated sludge (MAS) is a one‐stage process operated at 0.5–1.0 mg l−1 dissolved oxygen (DO) aiming at simultaneous nitrification and denitrification.
Xueyu Zhang, Shida Li, Shaokui Zheng, Shoupeng Duan   +3 more
doaj   +1 more source