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A NEARLY NEUTRAL MODEL OF BIODIVERSITY
Ecology, 2008S. P. Hubbell's unified neutral theory of biodiversity has stimulated much new thinking about biodiversity. However, empirical support for the neutral theory is limited, and several observations are inconsistent with the predictions of the theory, including positive correlations between traits associated with competitive ability and species abundance ...
Da-Yong Zhang
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Neutral models are a tool, not a syndrome
Nature Human Behaviour, 2021Peer ...
R. Alexander Bentley +4 more
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Neutral Models with Generalised Speciation
Bulletin of Mathematical Biology, 2009Hubbell's neutral theory claims that ecological patterns such as species abundance distributions can be explained by a stochastic model based on simple assumptions. One of these assumptions, the point mutation assumption, states that every individual has the same probability to speciate. Etienne et al.
Haegeman, Bart, Etienne, Rampal S.
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A Model of Neutral B2B Intermediaries
Journal of Management Information Systems, 2002Business-to-business (B2B) electronic commerce has become an important issue in the debate about electronic commerce. How should the intermediary charge suppliers and buyers to maximize profits from such a marketplace? We analyze a monopolistic B2B marketplace owned by an independent intermediary.
Byungjoon Yoo +2 more
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A neutral model of edge effects
Theoretical Population Biology, 2009In this paper a spatially implicit neutral model for explaining the edge effects between habitats is proposed. To analyze this model we use two different approaches: a discrete approach that is based on the Master equation for a one step jump process and a continuous approach based on the approximation of the discrete jump process with the Kolmogorov ...
Babak, Petro, He, Fangliang
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On the Neutralization Models in LEIS
1991Three different neutralization models are discussed. In the continuum limit their connection is clarified for ion trajectories with unspecified time-dependence. The unifying model is fitted to experiment for He+ → MgO scattering. It is pointed out how difficulties, related to the use of relative ion fractions, can be circumvented. Therefore the results
Verbist, G. +2 more
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Models of Neutrality: The Traditional and Modern
Cooperation and Conflict, 1988In contemporary international relations neutrality is not disappearing, nor is it fully its old self. It is loaded with both problems and promises. This duality calls for a discussion on the space available for neutrality on two different levels: the policies of the main actors and the structural developments of international relations and the level of
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