Abstract: A semiconductor device may include a substrate; semiconductor patterns that are stacked on the substrate, extend in a first direction parallel to a top surface of the substrate, and are spaced apart from each other; a gate electrode including horizontal portions, that extend in a second direction crossing the first direction, and a vertical portion, that is in contact with the horizontal portions and extends in a third direction perpendicular to the top surface of the substrate; a gate dielectric layer between the semiconductor patterns and the gate electrode; and a ferroelectric layer between the gate dielectric layer and the gate electrode. Each of the semiconductor patterns may include impurity regions and a channel region between the impurity regions, the vertical portion may be on a first side surface of the channel region, and the horizontal portions may be on a top and bottom surface of the channel region.

Abstract: Provided are a method and system for preventing the use of a stolen terminal when the stolen terminal registers its location again by making it inevitable for the stolen terminal to register its location again to be used. The method includes: receiving information that a user terminal was stolen; making a mobile application part (MAP) cancel location request to a mobile switching center (MSC) or a serving general packet radio service support node (SGSN) after receiving the information that the user terminal was stolen; and checking whether the user terminal is a stolen terminal when receiving a location registration approval request from the user terminal after performing a MAP cancel location process by deleting subscriber information of the user terminal from the MSC or the SGSN in response to the MAP cancel location request.

Abstract: Provided are a method and system for preventing the use of a stolen terminal when the stolen terminal registers its location again by making it inevitable for the stolen terminal to register its location again to be used. The method includes: receiving information that a user terminal was stolen; making a mobile application part (MAP) cancel location request to a mobile switching center (MSC) or a serving general packet radio service support node (SGSN) after receiving the information that the user terminal was stolen; and checking whether the user terminal is a stolen terminal when receiving a location registration approval request from the user terminal after performing a MAP cancel location process by deleting subscriber information of the user terminal from the MSC or the SGSN in response to the MAP cancel location request.