Results 21 to 30 of about 2,965,478 (248)
Effects of chronic browsing on life‐history traits of an irruptive large herbivore population
Population Ecology, EarlyView.This study aimed to determine the relationship between diet quality, body mass, and size (hind foot length), and female reproduction and sought to identify the mechanism by which high density under severe food limitations is maintained. Our results demonstrated that sika deer introduced to Nakanoshima Island have maintained high densities through high ...
Koichi Kaji +9 more
wiley +1 more source
Stellar differential rotation and coronal time-scales [PDF]
, 2014 GPSG would like to thank the STFC for financial support. DHM would like to thank the STFC and the Leverhulme Trust for financial support.We investigate the time-scales of evolution of stellar coronae in response to surface differential rotation and ...
Gibb, Gordon Peter Samuel +2 more
core +2 more sources
Forward Curvatures on Time Scales [PDF]
Abstract and Applied Analysis, 2011 We also introduce forward curvature of a curve and give some formulas to calculate forward curvature of a curve on time scales which may be an arbitrary closed subsets of the set of all real numbers. We also introduce the length of a curve parametrized by a time scale parameter in ℝ3.
Seyyidoglu, M. S. +4 more
openaire +4 more sources
Population Ecology, EarlyView.This study examines the demographic dynamics of two seabird populations on Tromelin Island, 15 years after the eradication of brown rats. The results indicate that these populations are in good health and are expected to continue growing until breeding sites are saturated in about a century.
Merlène Saunier +6 more
wiley +1 more source
Crystal Symmetry and Time Scales
, 2001 The relation between the notion of crystalline symmetry and characteristic time intervals when this symmetry could be observed is analyzed. Several time scales are shown to exist for a system of interacting particles. It is only when the observation time
Yukalov, V. I., Yukalova, E. P.
core +1 more source
Scaling in the timing of extreme events [PDF]
Chaos, Solitons & Fractals, 2015 Extreme events can come either from point processes, when the size or energy of the events is above a certain threshold, or from time series, when the intensity of a signal surpasses a threshold value. We are particularly concerned by the time between these extreme events, called respectively waiting time and quiet time.
openaire +4 more sources
Canonical time-frequency, time-scale, and frequency-scale representations of time-varying channels [PDF]
Communications in Information and Systems, 2005 Mobile communication channels are often modeled as linear time-varying filters or, equivalently, as time-frequency integral operators with finite support in time and frequency. Such a characterization inherently assumes the signals are narrowband and may not be appropriate for wideband signals.
Rickard, Scott T. +3 more
openaire +4 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
, 2001 We analyze a sample of bright long bursts and find that the pulses duration have a lognormal distribution while the intervals between pulses have an excess of long intervals (relative to lognormal distribution).
Ehud Nakar +19 more
core +1 more source
Time scales for fission at finite temperature [PDF]
, 2002 The concept of the "transient effect" is examined in respect of a "mean first passage time". It is demonstrated that the time the fissioning system stays inside the barrier is much larger than suggested by the transient time, and that no enhancement of ...
Hofmann, H., Ivanyuk, F. A.
core +3 more sources