The document discusses three models of research utilization: 1) The science push model which views researchers as supplying knowledge to passive users. 2) The user-driven model which views users as defining research problems and researchers as contractors. 3) The network model which emphasizes interactions between researchers and users and different stages of knowledge production. Empirical findings show the highest reported research utilization occurred when multiple dissemination methods were used, including academic, user-driven, and network-driven methods. Utilization was also optimized by scientist collaboration across fields and institutions.