I've invested a few times in a couple of different turn key models: single family residential and multifamily. (passiveincomewithrealestate.com)
This retrospective summarizes key models that make psychology - based assumptions about: individual preferences; individual beliefs; and, the process by which individuals make decisions. (cxoadvisory.com)
Accountability — examines key models and concepts of standards and accountability, financial issues in accountability, and accountability issues in leadership, diversity, and learning. (rossier.usc.edu)