A novel cellular automaton model of proliferative brain tumor growth has been developed. This model is able to simulate Gompertzian tumor growth over nearly three orders of magnitude in radius using only four microscopic parameters. The predicted composition and growth rates are in agreement with a test case pooled from the available medical literature. The model incorporates several new featur...

Recognition of textual entailment is not an easy task. In fact, early experimental evidences in [1] seems to demonstrate that even human judges often fail in reaching an agreement on the existence of entailment relation between two expressions. We aim to contribute to the theoretical and practical setting of textual entailment, through both a linguistic inspection of the textual entailment phen...

A major problem for all metaphysical systems and their corresponding epistemologies, including methods, mediations, and pretensions at being certain, inextricably presume the issues of reliability and validity. For the perspectival modern mentality reliability and validity, or intersubjective agreement among experts, constitutes objective knowledge. Scientific discourse, which is the most power...

• Over the post-war period, Canada has become more and more integrated with the world economy through an increase in its export orientation, heavier reliance on imported intermediate inputs, and more exposure to foreign competition in its domestic markets. These trends have become more accentuated in the last decade under the impetus of the Free Trade Agreement and the diffusion of information ...

The critical exponents νL2, ηL2 and γL of a uniaxial Lifshitz point are calculated at two-loop level using renormalization group and ǫL expansion techniques. We introduced a new constraint involving the loop momenta along the competition axis, which allows to solve the two-loop integrals. The exponent γL obtained using our method is in good agreement with numerical estimates based on Monte Carl...

Microbial ecosystems are remarkably diverse, stable, and often consist of a balanced mixture of core and peripheral species. Here we propose a conceptual model exhibiting all these emergent properties in quantitative agreement with real ecosystem data, specifically species abundance and prevalence distributions. Resource competition and metabolic commensalism drive stochastic ecosystem assembly...

The critical exponents νL2, ηL2 and γL2 of a uniaxial Lifshitz point are calculated at two-loop level using renormalization group and ǫL-expansion techniques. We introduced a new constraint involving the loop momenta along the competition axis, which allows to solve the two-loop integrals. The exponent γL2 obtained using our method is in good agreement with numerical estimates based on Monte Ca...

this study carried out in a factorial layout on completely randomaized block design with three replications, to evaluate the above- and below- ground competition between sesame (sesamum indicum) and pigweed (amaranthus retroflexus), and their impacts on sesame yield and yield component. the experimental treatments were all combination of crop-weed competition (shoot competition, root competitio...

An attack is demonstrated on a previously proposed class of key agreement protocols. Analysis of the attack reveals that a small change in the construction of the protocols is suucient to prevent the attack. The insight gained allows a generalisation of the class to a new design for conference key agreement protocols.