Results 1 to 10 of about 1,146,667 (380)

Stationary distribution and probability density function analysis of a stochastic Microcystins degradation model with distributed delay

Mathematical Biosciences and Engineering
A stochastic Microcystins degradation model with distributed delay is studied in this paper. We first demonstrate the existence and uniqueness of a global positive solution to the stochastic system. Second, we derive a stochastic critical value $ R_0^s $
Ying He , Yuting Wei, Junlong Tao, Bo Bi   +3 more
doaj   +1 more source

Lifting the Dusty Veil II: A Large-Scale Study of the Galactic Infrared Extinction Law

, 2009
We combine near-infrared (2MASS) and mid-infrared (Spitzer-IRAC) photometry to characterize the IR extinction law (1.2-8 microns) over nearly 150 degrees of contiguous Milky Way midplane longitude.
B. A. Whitney, B. Babler, C. Watson, Chapman, D. L. Nidever, Drimmel, E. Churchwell, Flaherty, G. Zasowski, Indebetouw, Jackson, Li, Lutz, M. F. Skrutskie, M. R. Meade, Madsen, McClure, Nishiyama, Nishiyama, Pineda, R. Indebetouw, R. J. Patterson, Román-Zúñiga, Rosenthal, S. R. Majewski, Skrutskie, Speck, Weingartner, Whittet, Zhukovska   +29 more
core   +1 more source

Colonization During Colonialism: Developing a Framework to Assess the Rapid Ecological Transformation of Mauritius’s Pristine Ecosystem

Frontiers in Ecology and Evolution, 2022
The colonization of Mauritius exemplifies the role played by humans in altering the ecosystems of remote oceanic islands. This paper focuses on how we study those islands first colonized under the global mantle of colonialism.
Krish Seetah, Stefania Manfio, Andrea Balbo, Andrea Balbo, R. Helen Farr, F. B. Vincent Florens   +5 more
doaj   +1 more source

Reddening Behaviors of Galaxies in the SDSS Photometric System

, 2008
We analyze the behaviors of reddening vectors in the SDSS photometric system for galaxies of different morphologies, ages, and redshifts. As seen in other photometric systems, the dependence of reddening on the spectral energy distribution (SED) and the ...
Grebel E. K., Myung Gyoon Lee, Sungsoo S. Kim   +2 more
core   +1 more source

Extinction rates of established spatial populations

, 2011
This paper deals with extinction of an isolated population caused by intrinsic noise. We model the population dynamics in a "refuge" as a Markov process which involves births and deaths on discrete lattice sites and random migrations between neighboring ...
A. S. Mikhailov, Baruch Meerson, C. W. Gardiner, H. Andersson, J. D. Murray, M. Abramowitz, M. S. Bartlett, Pavel V. Sasorov, R. Rajaraman   +8 more
core   +1 more source

Extinction in Lotka-Volterra model [PDF]

, 2009
Competitive birth-death processes often exhibit an oscillatory behavior. We investigate a particular case where the oscillation cycles are marginally stable on the mean-field level.
Alex Kamenev, B. Gaveau, D. J. Daley, H. Andersson, M. S. Bartlett, Matthew Parker, N. G. van Kampen, O. Diekmann, V. Volterra   +8 more
core   +1 more source

A Direct Measurement of the Dust Extinction Curve in an Intermediate-Redshift Galaxy [PDF]

, 2008
We present a proof-of-concept study that dust extinction curves can be extracted from the infrared (IR), optical, ultraviolet (UV) and X-ray afterglow observations of GRBs without assuming known extinction laws.
Bersier, David, Garnavich, Peter, Heng, Kevin, Lazzati, Davide, Matheson, Thomas, Noriega-Crespo, Alberto, Pahre, Michael, Perna, Rosalba   +7 more
core   +2 more sources

Extinction properties of the X-ray bright/optically faint afterglow of GRB 020405

, 2005
We present an optical-to-X-ray spectral analysis of the afterglow of GRB 020405. The optical spectral energy distribution not corrected for the extragalactic extinction is significantly below the X-ray extrapolation of the single powerlaw spectral model ...
Antonelli, L. A., Conciatore, M. L., Fiore, F., Lazzati, D., Perna, R., Stratta, G.   +5 more
core   +1 more source

Diagnosis and the Procession of Extinction: The Subversive and Instructive Attenuations of Being/Nonbeing Within the School

Scandinavian Journal of Disability Research
This article explores the complex relationships between diagnosis and extinction, focusing on how diagnostic practices construct/maintain states of disabled-nonbeing.
Brad Bierdz
doaj   +1 more source

Angular diameters, fluxes and extinction of compact planetary nebulae: further evidence for steeper extinction towards the Bulge

, 2004
We present values for angular diameter, flux and extinction for 70 Galactic planetary nebulae observed using narrow band filters. Angular diameters are derived using constant emissivity shell and photoionization line emission models.
A. A. Zijlstra, Acker, Balick, Bedding, Bensby, Boulares, Cahn, Cardelli, Caswell, D. Minniti, Dorschner, Dudziak, Durand, F. Comeron, Gray, Greenberg, Hamuy, Heiles, J. R. Walsh, K. Gesicki, Kimura, Koppen, Larson, Larson, Li, Lucy, M. D. Gray, Minniti, P. M. E. Ruffle, Popowski, Pottasch, Pottasch, Reid, Richardson, Scott, Stasinska, Tylenda, Tylenda, Udalski, Udalski, Van Hoof, Walton, Zijlstra   +42 more
core   +2 more sources