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  • The use of relaxation to solve harvest scheduling problems with flow, wildlife habitat, and adjacency constraints

    Creator:
    Torres-Rojo, Juan Manuel
    Abstract:
    Lagrangean relaxation is presented as a solution technique to solve flow constrained area-based harvest scheduling problems. The best set of multipliers in the Lagrangean approach is obtained through the subgradient method. Guidelines to set some parameters to compute the step size in the subgradient algorithm are provided. An additional procedure...
    Resource Type:
    Dissertation
    Full Text:
    algorithm has failed in reducing the Lagrangean function 40 IMPROVEMENTS ON THE SOLUTION YIELDED BY THE

  • Relativistic field-theoretical transport in condensed matter

    Creator:
    Vischer, Axel P.
    Abstract:
    We discuss a relativistic transport theory of condensed matter based on a microscopic system containing bosonic and fermionic degrees of freedom interacting via 3 - and 4-point interactions. We use the Dyson hierarchy as a solution to the underlying field theory and truncate this hierarchy by parametrizing the 2-particle-irreducible kernels...
    Resource Type:
    Dissertation
    Full Text:
    in our theory is the Lagrangian of the system of interest. This Lagrangian is only a function of the