نتایج جستجو برای: coexistence

تعداد نتایج: 18885  

2015
Tomas Horváth Lukáš Kočí Michal Jurčík Miloslav Filka

This article deals with the coexistence of two passive optical standards with video transmission using the CATV technology. The paper shows the cross coexistence of standards that are used for an analysis of critical parameters BER. The results of simulations define border parameters for data services in networks with the BER parameter. The designed model has proven that it is able to transfer ...

Journal: :Epidemics 2009
Marc Lipsitch Caroline Colijn Ted Cohen William P Hanage Christophe Fraser

In most pathogens, multiple strains are maintained within host populations. Quantifying the mechanisms underlying strain coexistence would aid public health planning and improve understanding of disease dynamics. We argue that mathematical models of strain coexistence, when applied to indistinguishable strains, should meet criteria for both ecological neutrality and population genetic neutralit...

2017
Ewa Wielosz Maria Kurowska Dorota Suszek Maria Majdan

Diabetic sclerodactyly is a frequently recognized skin finding that may occur in patients with diabetes mellitus but coexistence of diabetes and systemic sclerosis is rare. We describe a case of coexistence of type 1 diabetes mellitus and systemic sclerosis in 42-year-old man with the history of Raynaud's phenomenon, progressive diffuse hardening of the skin and sclerodactyly, slowly worsening ...

Journal: :Physical review letters 2014
Jiayuan Luo Limei Xu Erik Lascaris H Eugene Stanley Sergey V Buldyrev

Using linear scaling theory, we study the behavior of response functions extrema in the vicinity of the critical point. We investigate how the speed of convergence of the loci of response function extrema to the Widom line depends on the parameters of the linear scaling theory. We find that when the slope of the coexistence line is near zero, the line of specific heat maxima does not follow the...

Journal: :Mathematical biosciences 1989
L Li

The purpose of this note is to give a necessary and sufficient condition for the coexistence of positive solutions to a rather general type of elliptic predator-prey system of the Dirichlet problem on the bounded domain omega when omega is a subset of Rn is large. The result is that the partial differential equation system possesses positive coexistence if and only if the corresponding ordinary...

2000
Jos Jansen

Coexistence of Strategic Vertical Separation and Integration by Jos Jansen This paper gives conditions under which vertical separation is chosen by some upstream firms, while vertical integration is chosen by others in the equilibrium of a symmetric model. A vertically separating firm trades off fixed contracting costs against the strategic benefit of writing a (two-part tariff, exclusive deale...

2000
Ezequiel V. Albano

The poisoning dynamics of the Ziff–Gulari–Barshad @Phys. Rev. Lett. 56, 2553 ~1986!# model, for a monomer–dimer reaction, is studied by means of Monte Carlo simulations. Studies are performed within the monomer absorbing state and close to the coexistence point. Analysis of the average poisoning time (tp) allows us to propose a phenomenological scaling approach in which tp diverges logarithmica...

Journal: :Journal of colloid and interface science 2013
E Hatta T Nishimura

The dependence of the size of the cooperative unit (C.U.) of amphiphilic molecules on surface pressure (π) in the liquid expanded (LE)-liquid condensed (LC) phase coexistence region of Langmuir monolayers has been formulated and calculated using measured isotherm data. The C.U. size changes largely depending on the surface pressure in the coexistence region: these submicroscopic molecular aggre...

2012
Boris Beaude

Over the past five years, cartographic practices have been profoundly renewed and have mainly been concentrated within large metropolises, where maps are usually found in the subway, in the street (street furniture) or in paperback city guides. ese maps are now available on the Internet and by extension on mobile phones, accompanying individuals as they move from place to place. Augmented by m...

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