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Some domain decomposition and multigrid preconditioners for hybrid mixed finite elements
Discretizations of self-adjoint, linear, second-order, uniformly elliptic partial differential equations by hybrid mixed finite elements lead to large, ill-conditioned saddle-point problems. By eliminating the flux variable, ...
An abstract analysis of differential semblance optimization
Differential Semblance Optimization (DSO) is a novel way of approaching a class of inverse problems arising in exploration seismology. The promising feature of the DSO method is that it replaces a nonsmooth, highly nonconvex ...
Solving very large scale school/student assignment problems
Currently, the Houston Independent School District has approximately 175 elementary schools providing education for more than 110,000 students. A question of major logistical impact is how to assign students to schools in ...