Results 71 to 80 of about 283,672 (380)
Modeling “Textured” Bones in Virtual Human Phantoms
IEEE Transactions on Radiation and Plasma Medical Sciences, 2019 The purpose of this paper was to develop detailed and realistic models of the cortical and trabecular bones in the spine, ribs, and sternum and incorporate them into the library of virtual human phantoms [extended cardiac-torso (XCAT)]. Cortical bone was
Ehsan Abadi +5 more
semanticscholar +1 more source
The phantom menace in representation theory [PDF]
, 2014 Our principal goal in this overview is to explain and motivate the concept of a phantom in the representation theory of a finite dimensional algebra $\Lambda$.
Huisgen-Zimmermann, Birge
core
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
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
Nature, 1878 IT might be supposed that permanent and entirely local or “internal” force-pairs of this kind acting on innumerable material couplets in a system would so disturb the individual energies of their motions that no general conclusion as to the total change of energy during the progress of such a system's motion could be drawn; but the simple law that ...
openaire +2 more sources
Experimental Breast Phantoms for Estimation of Breast Tumor Using Microwave Imaging Systems
IEEE Access, 2018 In this paper, the preparation and the measurement of a set of human breast phantoms for microwave breast imaging (MBI) as a method of tumor detection are presented.
M. T. Islam +3 more
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
Elucidating the Phantom Phantom
Hypothesis, 2008 Research magnetic resonance imaging (MRI) faces the negative effects of the phantom phantom, a spirit that haunts the MRI system, specifcally targeting inanimate "phantoms" used for imaging in the absence of a willing human. The detrimental effects of the phantom phantom are strongest when frustration is high. Here, given appropriate frustration, it is
openaire +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
Phantom appearance of non-phantom matter
The European Physical Journal C, 2004 Two cosmological models with non-phantom matter having the same expansion of the universe as phantom cosmologies are constructed. The first model is characterized by the evolving gravitational "constant" $G$ and a dark energy component with a non-conserved energy-momentum tensor.
openaire +5 more sources