An apparatus is provided for receiving a signal in a wireless communication system. Embodiments include anisotropically etching the trench region and subsequently isotropically etching the trench to form laterally extending regions under the strained silicon layer. The second series of bands, formed in the mat at the annular grooves of the roll, has an average binder concentration greater than that of the first series of bands. Electricity is supplied to the image capturing unit decided to be activated. The nonvolatile memory device has a voltage controller that programs the each memory cell by programming the program transistor and reading the read transistor.