“If Thai shrimp farming were taxed, how much should it be?” is the key re-search question of this paper. The dynamic-constraint optimization model in-corporating accumulated nutrient load from farm discharges is applied in the analysis. The model implies some tax has to be imposed on stock...

A unique (and challenging) characteristic of social sciences is that these sci-ences are multi-paradigmatic and adhere to a wide range of research strategies. One research strategy that social scientists can choose to rely on is action re-search. However, action research qualifies as a research...