I. INTRODUCTION Delay systems occupy a special place within the field of distributed parameter systems. Certain problems for this class of distributed parameter systems lend themselves to more elegant, or even explicit solutions. An enormous wealth of knowledge and research results exists for control of systems with state delays and input delays. Problems with long input delays, for unstable pl...

Results of wellposedness and stability are presented for a partial differential equation (PDE) model which has been used to model certain biological and physical fluid-structure interactions. The coupling between the fluid and structural equations occurs across the boundary interface. A key feature in the analysis is the novel method of eliminating the associated pressure of the system. This is...

The purpose of this study was to determine the incidence rate of prostate cancer among men with erectile dysfunction (ED) treated with phosphodiesterase type 5 inhibitors (PDE-5i) over a 7-year period vs. men with ED of the same age and with similar risk factors who were not treated with PDE-5i. In a retrospective review of electronic medical records and billing databases between the years 2000...