The present study aims to analyse the sustainable innovation strategies that companies can implement in their business models order improve economic performance and become more competitive marketplace. This uses a qualitative methodology based on case method of nine companies. It was concluded have concerns about environmental issues, translated into implementation practices models, not because...

Rich and ephemeral resources, such as carrion, are a source of intense interspecific competition among animal scavengers and microbial decomposers. Janzen [Janzen DH (1977) Am Nat 111:691-713] hypothesized that microbes should be selected to defend such resources by rendering them unpalatable or toxic to animals, and that animals should evolve counterstrategies of avoidance or detoxification. D...

Access to nutrients is a key factor governing development, reproduction and ultimately fitness. Within social groups, contest-competition can fundamentally affect nutrient access, potentially leading to reproductive asymmetry among individuals. Previously, agent-based models have been combined with the Geometric Framework of nutrition to provide insight into how nutrition and social interaction...

A recent study of the foraging gene in Drosophila illustrates a long-standing economic maxim that competition favors rare strategies. Two foraging alleles, rovers and sitters, each have higher fitness when rare--but only when competition is strong.

This paper suggests that the analysis of Schumpeterian competitionwithin the Nelson--Winter model should be complemented with evolutionary game theory. This model and its limitations for density-dependent Schumpeterian strategies are presented in terms of the equations of evolutionary dynamics. Formulated as evolutionary games, the set of strategies can easily be extended from innovators and im...

We present a competiton scheme which dynami cally allocates the number of trials given to di erent search strategies The competition scheme changes the sizes of the subgroups but also the size of the whole population The competition scheme is able to combine the strengths of in dividual search strategies in a synergetic way This claim is demonstrated by numerical experiments with two di cult fu...

We investigate population models with both continuous and discrete elements. Birth is assumed to occur at discrete instants of time whereas death and competition for resources and space occur continuously during the season. We compare the dynamics of such discrete-continuous hybrid models with the dynamics of purely discrete models where within-season mortality and competition are modelled dire...