Our research interest focuses on developing theoretical explanations of transport, magnetic, and optical properties of strongly correlated electron systems, ranging from transition metal based oxides (such as manganites, vanadites, ferrites, etc.), dilute magnetic semiconductors, to two-dimensional systems such as graphene. In most cases, we employ tight-binding based many-body techniques implemented in numerical algorithms which are then computed using Fortran 90 language. Typically, due to the large scale of the problems, our computation need be managed in parallel using MPI or OpenMP. On the theoretical aspects, we have been using Mean-Field as well as Dynamical Mean-Field approximations to handle various types of interactions in the systems being studied. We are currently also developing tight-binding based GW - Bethe-Salpeter Equation (BSE) algorithm to study excitonic effects. Along this direction we are also using Density Functional Theory (DFT) based GW-BSE package for comparisons. Students working in our group have the opportunity to learn advanced physics, develop computational skills, and have fun doing research projects with fellow students and researchers.