Results 61 to 70 of about 6,492,121 (341)
On essential singularities of meromorphic mappings
Mathematische Annalen, 1989 The three notions ``essential singularity of the i-th kind, \(i=1,2,3''\) of a meromorphic mapping are introduced: A meromorphic mapping \(f: X\to Y\), where \(X^ *\), Y are normal complex spaces and \(X\subset X^ *\) is an open subset, is said to have an essential singularity of the i-th kind in a point P lying on the border of X if f doesn't admit ...
openaire +3 more sources
On ω-essential mappings onto manifolds [PDF]
Fundamenta Mathematicae, 1991 Essential mappings have played an important role in homotopy theory as well as in continua theory. A mapping \(f: X\to M\) from a compactum into a manifold is said to be essential provided every admissible deformation of \(f\) is surjective, while a mapping \(f: X\to M\) is said to be \(\omega\)- essential provided that \(f\times \hbox{id}_ k: X\times ...
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
Surface Mapping of Earth-like Exoplanets using Single Point Light Curves [PDF]
, 2020 Spatially resolving exoplanet features from single-point observations is essential for evaluating the potential habitability of exoplanets. The ultimate goal of this protocol is to determine whether these planetary worlds harbor geological features and ...
Fan, Siteng, Yung, Yuk L.
core
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
Evidence-Based Complementary and Alternative Medicine, 2016 A wide range of medicinal and aromatic plants (MAPs) have been explored for their essential oils in the past few decades. Essential oils are complex volatile compounds, synthesized naturally in different plant parts during the process of secondary ...
M. K. Swamy, M. Akhtar, U. Sinniah
semanticscholar +1 more source
Geographic variation in walking activity in the red flour beetle Tribolium castaneum
Population Ecology, EarlyView.This study examined whether there is geographic variation in field populations, focusing on the moving activity in the red flour beetle Tribolium castaneum. Results showed significant differences in moving activity among field populations but no correlation with latitude or meteorological factors.
Kentarou Matsumura
wiley +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
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
Hazard Assessment and Hazard Mapping for Kuwait
International Journal of Disaster Risk Science, 2023 Hazard maps are essential tools to aid decision makers in land-use planning, sustainable infrastructure development, and emergency preparedness. Despite the availability of historical data, there has been no attempt to produce hazard maps for Kuwait.
Ali Al-Hemoud +6 more
doaj +1 more source