Results 41 to 50 of about 1,154,828 (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

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

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

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

Evaluating the influence of lake morphology, trophic status and diagenesis on geochemical profiles in lake sediments [PDF]

, 2010
Recent geochemical studies provide evidence that changes in vertical distributions of nutrients in lake sediments are driven by anthropogenic activities, based primarily on trends of increasing concentrations in upper sediment layers.
Hamilton, David P., Pilditch, Conrad A., Trolle, Dennis   +2 more
core   +2 more sources

Sediment Threshold

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

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

Comprehensive evaluation of water resources security in the Yellow River basin based on a fuzzy multi-attribute decision analysis approach [PDF]

Hydrology and Earth System Sciences, 2014
In this paper, a fuzzy multi-attribute decision analysis approach (FMADAA) was developed for supporting the evaluation of water resources security in nine provinces within the Yellow River basin. A numerical approximation system and a modified left–right
K. K. Liu, C. H. Li, Y. P. Cai, M. Xu, X. H. Xia   +4 more
doaj   +1 more source

Ecological Water Requirement Accounting of the Main Stream of the Yellow River From the Perspective of Habitat Conservation

Frontiers in Ecology and Evolution, 2022
The Yellow River Basin is of great significance to China’s economic and social development and ecological security. The Yellow River Basin is not only an important ecological barrier but also an important economic zone.
Fen Zhao, Fen Zhao, Chunhui Li, Wenxiu Shang, Xiaokang Zheng, Xuan Wang, Qiang Liu, Jiuhe Bu   +7 more
doaj   +1 more source