Abstract: A method for preparing a semiconductor device includes: providing a semiconductor substrate, in which a trench is formed on the semiconductor substrate, a filling layer is formed in the trench, and a void is formed in the filling layer; removing a portion of the filling layer to expose the void; forming a plug, in which the plug is configured to plug the void and extends into the void by at least a preset distance; and removing a portion of the filling layer and remaining the plug with at least a preset height until the filling layer reaches a preset thickness to form a contact hole.

Abstract: An interaction processing method and apparatus for an information flow includes displaying the information flow in an information flow region. The interaction region is inserted into the information flow and an interaction material corresponding to the interaction region is displayed in a search region. In response to an interaction operation for the interaction region, an interaction process based on the interaction material in the interaction region is displayed.

Abstract: An information delivery system comprises: a user information storage unit configured to store user information; a reservation information storage unit configured to store reservation information accepted from a user in association with the user information; an authentication unit configured to authenticate a visiting user who enters a facility on the basis of a comparison between information acquired from an image of the visiting user and the user information; a checking unit configured to check the information about the visiting user authenticated by the authentication unit against the reservation information stored in the reservation information storage unit; and a communication unit configured to output, to a customer service support unit, visit information obtained by combining the information about the visiting user checked by the checking unit and the reservation information.

Abstract: A customer service system for providing customer service using a robot for customer service is provided. A first acquisition unit acquires first information regarding a topic provided by a person in charge of response in a negotiation between a visitor and the person in charge of response. A second acquisition unit acquires a detection result regarding speech and behavior of the visitor by the robot. An estimation unit estimates a reaction of the visitor on a basis of the detection result acquired by the second acquisition unit. An output unit outputs second information regarding the reaction estimated by the estimation unit.