Results 61 to 70 of about 1,901,618 (330)
Essentially spectrally bounded linear maps [PDF]
Proceedings of the American Mathematical Society, 2009 Let L(H) be the algebra of all bounded linear operators on an infinite dimensional complex Hilbert space H. We characterize essentially spectrally bounded linear maps from L(H) onto L(H) itself. As a consequence, we characterize linear maps from L(H) onto L(H) itself that compress different essential spectral sets such as the the essential spectrum ...
M. Bendaoud +2 more
openaire +2 more sources
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
Flood Maps in the Czech Republic: Content, Perception and Information value
E3S Web of Conferences, 2016 Floods are one of the most important environmental hazards in the Czech Republic. At present, flood management is more focused on non-structural flood preventive measures, which also include flood mapping.
Klemešová Kamila
doaj +1 more source
An Alternative Approach to Generalised BV and the Application to Expanding Interval Maps
, 2012 We introduce a family of Banach spaces of measures, each containing the set of measures with density of bounded variation. These spaces are suitable for the study of weighted transfer operators of piecewise-smooth maps of the interval where the weighting
Butterley, Oliver
core +1 more source
Moving in the Dark: Enlightening the Spatial Population Ecology of European Cave Salamanders
Population Ecology, EarlyView.We assessed individual interactions, movement ecology and activity patterns of a subterranean population of Speleomantes strinatii, applying spatial capture–recapture modeling to a photographic dataset of 104 individuals. ABSTRACT Space use and movement are fundamental aspects of organisms' ecology, mirroring individual fitness, behavior, and life ...
Giacomo Rosa +2 more
wiley +1 more source
Analele Stiintifice ale Universitatii Ovidius Constanta: Seria MatematicaThis paper presents Leray–Schauder alternatives and a topological transversality (homotopy) theorem for compact upper semicontinuos maps having (strongly) convexly totally bounded ranges.
O’Regan Donal
doaj +1 more source
The mineral resources of the English Channel and Thames Estuary [PDF]
, 2013 This report accompanies the Marine mineral resource map the marine sand and gravel resources of the English Channel and Thames Estuary (Bide et al, 2012).
Balson, P.S. +5 more
core
Continuation principles and d-essential maps
Mathematical and Computer Modelling, 1999 zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire +4 more sources
Infection Models for Pine Wilt Disease on the Basis of Vector Behaviors
Population Ecology, EarlyView.Infection models for pine wilt disease without vector density were built to estimate the transmission coefficient of the pathogenic nematode. The models successfully simulated the annual change in the density of infected trees for four pine stands. ABSTRACT Pine wilt disease is caused by the pinewood nematode (Bursaphelenchus xylophilus Steiner et ...
Katsumi Togashi
wiley +1 more source
Population Ecology, EarlyView.Bear management changes management actions according to the horizontal axis of the population size and the vertical axis of the number of nuisance bears. Aiming for the target population size of Ntar, Actions I and II protect the bears, and Action IV reduces the population.
Hiroyuki Matsuda +5 more
wiley +1 more source