A Computer Study on Mach Reflection around a Concave Surface -- Computational Study on Aerodynamic Characteristics of Automobiles -- Use of Multicolor Vectorization of Incomplete LU Preconditioning for the Wilson Fermion on the Lattice -- Supercomputing for Plasma MHD Simulations -- High Accuracy Particle-Particle Particle-Mesh Code and its Application to Laser-Produced Dense Plasma -- Implementation of the Concurrent Scaled Conjugate Gradient Method on the Intel iPSC -- On an O(N log N) Algorithm for the Gravitational N-body Simulation and its Vectorization -- The Performance of the Alliant FX/8 on Two Sets of Benchmarks -- FACOM VP Series E Model -- HITACHI Supercomputer S-820 System Overview -- Parallel Computer MiPAX -- Vectorization of Lanczos Algorithms on the NEC SX Supercomputer System.