To simulate time variations of economic activity I need to create a fluctuation in time by, as example a sinusoidal function as a positive/negative effect on employement rate.
How can I do this in a dynamic model?

To simulate time variations of economic activity I need to create a fluctuation in time by, as example a sinusoidal function as a positive/negative effect on employement rate.
How can I do this in a dynamic model?

To simulate time variations of economic activity I need to create a fluctuation in time by, as example a sinusoidal function as a positive/negative effect on employement rate.
How can I do this in a dynamic model?