Results 41 to 50 of about 20,208,357 (389)
Network topology drives population temporal variability in experimental habitat networks
Population Ecology, EarlyView.Habitat patches connected by dispersal pathways form habitat networks. We explored how network topology affects population outcomes in laboratory experiments using a model species (Daphnia carinata). Central habitat nodes in complex lattice networks exhibited lower temporal variability in population sizes, suggesting they support more stable ...
Yiwen Xu +3 more
wiley +1 more source
Monodromic singularities without curves of zero angular speed
AIMS MathematicsWe consider planar analytic vector fields $ \mathcal{X} $ having a monodromic singular point with Poincaré map $ \Pi $. We use the fact that there always exists a real analytic invariant curve $ F = 0 $ of $ \mathcal{X} $ in a neighborhood of that ...
Isaac A. García, Jaume Giné
doaj +1 more source
Aktualʹnì Problemi Rozvitku Ekonomìki Regìonu, 2018 The article is investigated the role of a state institution of higher education in shaping and raising the level of institutional capacity of community development in the region.
Svitlana Kropelnytska
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Data Center Energy Consumption Modeling: A Survey
IEEE Communications Surveys and Tutorials, 2016 Data centers are critical, energy-hungry infrastructures that run large-scale Internet-based services. Energy consumption models are pivotal in designing and optimizing energy-efficient operations to curb excessive energy consumption in data centers.
Miyuru Dayarathna, Yonggang Wen, Rui Fan
semanticscholar +1 more source
occumb: An R package for site occupancy modeling of eDNA metabarcoding data
Population Ecology, EarlyView.This study introduces a new R package, occumb, for the convenient application of site occupancy modeling using environmental DNA (eDNA) metabarcoding data. We outline a data analysis workflow, including data setup, model fitting, model assessment, and comparison of potential study settings based on model predictions, all of which can be performed using
Keiichi Fukaya, Yuta Hasebe
wiley +1 more source
Rings and groups with commuting powers
International Journal of Mathematics and Mathematical Sciences, 1981 Let n be a fixed positive integer. Let R be a ring with identity which satisfies (i) xnyn=ynxn for all x,y in R, and (ii) for x,y in R, there exists a positive integer k=k(x,y) depending on x and y such that xkyk=ykxkand (n,k)=1.
Hazar Abu-Khuzam, Adil Yaqub
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Does Industrial Air Pollution Increase Health Care Expenditure? Evidence From China
Frontiers in Public Health, 2021 This paper discusses the impact of air pollution on medical expenditure in eastern, central, and western China by applying the fixed-effect model, random-effect model, and panel threshold regression model. According to theoretical and empirical analyses,
Jin-Sheng Shen, Qun Wang, Han-Pu Shen
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Entanglement with centers [PDF]
Journal of High Energy Physics, 2016 49 pages, minor changes, references ...
openaire +4 more sources
Database resources of the National Center for Biotechnology Information
Nucleic Acids Res., 2014 The National Center for Biotechnology Information (NCBI) provides a large suite of online resources for biological information and data, including the GenBank® nucleic acid sequence database and the PubMed database of citations and abstracts for ...
David L. Wheeler +31 more
semanticscholar +1 more source
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 +6 more
wiley +1 more source