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Experiments were carried out to test nestmate-brood recognition in the neotropical ant species Ectatomma tuberculatum, belonging to the primitive subfamily Ponerinae. In the same laboratory colonies, two behavioural subcastes, nurses and foragers, were given simultaneous choices between nestmate and non-nestmate brood (larvae or cocoons). Nurses and(More)
In this paper we study the optimal control problem of the heat equation by a distributed control over a subset of the domain, in the presence of a state constraint. The latter is integral over the space and has to be satisfied at each time. Using for the first time the technique of alternative optimality systems in the context of optimal control of partial(More)
In this paper we study the optimal control problem of the heat equation by a distributed control over a subset of the domain, in the presence of a state constraint. The latter is integral over the space and has to be satisfied at each time. Using for the first time the technique of alternative optimality systems in the context of optimal control of partial(More)
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