Results 21 to 30 of about 217,004 (318)

Price Dispersion [PDF]

open access: yesSSRN Electronic Journal, 2003
We model firm pricing given consumers follow simple reservation price rules. Such reservation rules are rational when consumers are sufficiently impatient. The equilibrium exhibits price dispersion in pure strategies, with lower price firms earning higher profits.
ANDERSON, Simon, de PALMA, André
openaire   +3 more sources

Long-Distance Wind-Dispersal of Spores in a Fungal Plant Pathogen: Estimation of Anisotropic Dispersal Kernels from an Extensive Field Experiment [PDF]

open access: yes, 2014
Given its biological significance, determining the dispersal kernel (i.e., the distribution of dispersal distances) of spore-producing pathogens is essential. Here, we report two field experiments designed to measure disease gradients caused by sexually-
Andreas Mehl   +40 more
core   +1 more source

Approaches to Dispersing Medical Biofilms

open access: yesMicroorganisms, 2017
Biofilm-associated infections pose a complex problem to the medical community, in that residence within the protection of a biofilm affords pathogens greatly increased tolerances to antibiotics and antimicrobials, as well as protection from the host ...
Derek Fleming, Kendra P. Rumbaugh
doaj   +1 more source

Changes in seed dispersal processes and the potential for between-patch connectivity for an arid land daisy [PDF]

open access: yes, 2012
Dispersal is a major and critical process in population biology that has been particularly challenging to study. Animals can have major roles in seed dispersal even in species that do not appear specifically adapted to animal-aided dispersal.
Possingham, H.   +13 more
core   +1 more source

Aproceros leucopoda (Hymenoptera: Argidae): An East Asian pest of elms (Ulmus spp.) invading Europe

open access: yesEuropean Journal of Entomology, 2010
An invasive sawfly Aproceros leucopoda Takeuchi, 1939, which originates from East Asia, has colonized elms (Ulmus spp.) in Austria, Hungary, Poland, Romania, Slovakia and the Ukraine, at least since 2003.
Stephan M. BLANK   +10 more
doaj   +1 more source

Effective long-distance pollen dispersal in Centaurea jacea [PDF]

open access: yes, 2009
BACKGROUND: Agri-environment schemes play an increasingly important role for the conservation of rare plants in intensively managed agricultural landscapes.
Albrecht, M.   +15 more
core   +1 more source

Dispersal and Repulsion of Entomopathogenic Nematodes to Prenol

open access: yesBiology, 2019
Chemosensory cues are crucial for entomopathogenic nematodes (EPNs)—a guild of insect-killing parasitic nematodes that are used as biological control agents against a variety of agricultural pests.
Kassandra Kin   +2 more
doaj   +1 more source

Distance-2-Dispersion: Dispersion with Further Constraints

open access: yes, 2023
The aim of the dispersion problem is to place a set of $k(\leq n)$ mobile robots in the nodes of an unknown graph consisting of $n$ nodes such that in the final configuration each node contains at most one robot, starting from any arbitrary initial configuration of the robots on the graph.
Tanvir Kaur, Kaushik Mondal 0001
openaire   +2 more sources

Invasive species control: incorporating demographic data and seed dispersal into a management model for Rhododendron ponticum [PDF]

open access: yes, 2009
Rhododendron ponticum is a serious invasive alien plant in the British Isles and is of significant conservation and economic concern. Here, we integrate information on both the life-history and spatial dynamics of this species within an individual-based,
Edwards, Colin   +9 more
core   +1 more source

Darwin’s wind hypothesis: does it work for plant dispersal in fragmented habitats? [PDF]

open access: yes, 2009
Using the wind-dispersed plant Mycelis muralis, we examined how landscape fragmentation affects variation in seed traits contributing to dispersal.
Riba, Miquel,   +53 more
core   +1 more source

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