The document provides an overview of communication concepts and models, including:
1) Shannon and Weaver's linear model of communication and its limitations in capturing meaning and context.
2) Westley and Maclean's model highlighting the role of communicators as advocates, channels, or behaving in a non-purposive role.
3) Uses and gratifications theory which views communication as interactive and audiences using media to fulfill different needs.
4) Agenda-setting theory which describes how media influences what issues the public thinks about.