3 documents found, page 1 of 1
Barrett's paradox of cooperation in the case of quasi-linear utilities
Accinelli, E; Afsar, A; Martins, F; Martins, J; Oliveira, B.M.P.M.; Oviedo, J; Alberto A. Pinto; Quintas, LThis paper fits in the theory of international agreements by studying the success of stable coalitions of agents seeking the preservation of a public good. Extending Baliga and Maskin, we consider a model of N homogeneous agents with quasi-linear utilities of the form u(j) (r(j); r) = r(alpha) - r(j), where r is the aggregate contribution and the exponent alpha is the elasticity of the gross utility. When the v...
Immune Response Model Fitting to CD4 + T Cell Data in Lymphocytic Choriomeningi...
Afsar, A; Martins, F; Bruno M P M Oliveira; Pinto, AAWe make two fits of an ODE system with 5 equations that model immune response by CD4 + T cells with the presence of regulatory T cells (Tregs). We fit the simulations to data regarding gp61 and NP309 epitopes from mice infected with lymphocytic choriomeningitis virus LCMV. We optimized parameters relating to: the T cell maximum growth rate; the T cell capacity; the T cell homeostatic level; and the ending time ...
The Effect of a Linear Tuning between the Antigenic Stimulations of CD4(+) T Ce...
Yusuf, AA; Figueiredo, IP; Afsar, A; Burroughs, NJ; Pinto, A.A.; Bruno M P M OliveiraWe study the equilibria of an Ordinary Differencial Equation (ODE) system where CD4<mml:semantics>+</mml:semantics> effector or helper T cells and Regulatory T cells (Tregs) are present. T cells trigger an immune response in the presence of their specific antigen. Regulatory T cells (Tregs) play a role in limiting auto-immune diseases due to their immune-suppressive ability. Here, we present explicit exact form...