The present invention provides methods to promote the differentiation of pluripotent stem cells. The resources reallocation module establishes the resources module and the relationship between access points and STAs in the wireless network hotspots, and seeks possible load balance shift paths. The collected processing rate data is then communicated to a controller that autonomously compares the processing rate data to determine whether to adjust a process parameter. The diffusion barrier layer serves to prevent impurities implanted into the SOI layer from being diffused into the buried oxide layer or the semiconductor substrate.