Journal on Policy and Complex Systems
( Murdok & Provost , 1973 ). Therefore , within the field of Japanese archeology , it has generally been held that it was women who produced pottery during ancient times . Therefore , in our simulation model , the inheritance of pottery is assumed to be maternal . Additionally , because the pottery style had rapidly become varied , we must consider that the diffusion pattern of pottery styles contains not only the vertical transmission , but also the horizontal transmission . Therefore , as will be described later , we also simulate the horizontal transmission in addition to the vertical transmission . The horizontal transmission also shows reversibility , that is , there are changes not only from the native style to the immigrant style , but also from the immigrant style to the native style .
2.2 Process Overview and Scheduling
Our simulation model proceeded according to annual time steps ; the annual time step was a year . Each year , the four submodels of each agent were executed in turn as follows : diffusion of the agriculture rule , diffusion of the pottery style rule , marriage rule , and moving rule . Additionally , agents were processed in a random order during each year .
2.3 Design Concepts
Our simulation model corresponded to 7 out of the 11 design concepts
contained in the ODD protocol ( Table 1 ). The model was simple , and we considered that the description of the model and design concepts was sufficient to indicate reproducibility .
Table 1 : Design concepts
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