Recent projects Design of a 4K Hybrid Stirling/Pulse Tube Cooler for Tactical Applications Kirkconnell, C. S., T. I. Mulcahey, S. M. Ghiaasiaan, T. J. Conrad, and B. R. Schaefer. Conjugate heat transfer during oscillatory laminar flow in porous media Pathak, M. G., T. I. Mulcahey, and S. M. Ghiaasiaan. Oscillatory flow in microporous media applied in pulse tube and Stirling cycle cryocooler regenerators Cha, J. S., S. M. Ghiaasiaan, and C. S. Kirkconnell. Hydrodynamic parameters for ErPr cryocooler regenerator fillers under steady and periodic flow conditions Pathak, M. G., V. C. Patel, S. M. Ghiaasiaan, T. I. Mulcahey, B. P. Helvensteijn, A. Kashani, and J. R. Feller Effect of Pressure on Hydrodynamic Parameters of Several PTR Regenerator Fillers in Axial Steady Flow Landrum, E. C., T. J. Conrad, S. M. Ghiaasiaan, and C. S. Kirkconnell. Anisotropic Hydrodynamic Parameters of Regenerator Materials Suitable for Miniature Cryocoolers Conrad, T. J., E. C. Landrum, S. M. Ghiaasiaan, C. S. Kirkconnell, T. Crittenden, and S. Yorish. Thin-Film Evaporative Cooling of a Side-Pumped Solid-State Laser Diode Oscillator for Space-Based LIDAR Applications Stewart, B. K., M. K. Akbar, and S. M. Ghiaasiaan.