Abstract: A technology of fabricating a piezoelectric composite applicable to an ultrasonic transducer is disclosed. According to one aspect of the present disclosure, a support member formed with a plurality of through holes is located on one surface of an electrode plate, and lower surfaces of piezoelectric pillars having shapes respectively corresponding to the through holes are adhered onto the one surface of the electrode plate to form the piezoelectric pillars. Further, according to an additional aspect, the plurality of piezoelectric pillars having shapes corresponding to the through holes of the support member are formed by sintering a piezoelectric pellet molded in a pillar shape.

Abstract: Disclosed are a system, method, device, and/or non-transitory computer readable medium for providing an instant messaging service implemented with a computer. The method includes receiving a request on establishing a conversation interface with an official account registered at the instant messaging service from a client, providing a rich menu user interface associated with the official account on a portion of the conversation interface when the client establishes the conversation interface in response to the request, receiving a selection on a display item included in the rich menu from the client, identifying content associated with the selected display item by a manager of the official account, and providing the identified content to the client through the conversation interface.

Abstract: Disclosed are a system, method, device, and/or non-transitory computer readable medium for providing an instant messaging service implemented with a computer. The method includes receiving a request on establishing a conversation interface with an official account registered at the instant messaging service from a client, providing a rich menu user interface associated with the official account on a portion of the conversation interface when the client establishes the conversation interface in response to the request, receiving a selection on a display item included in the rich menu from the client, identifying content associated with the selected display item by a manager of the official account, and providing the identified content to the client through the conversation interface.

Abstract: Disclosed are a system, method, device, and/or non-transitory computer readable medium for providing an instant messaging service implemented with a computer. The method includes receiving a request on establishing a conversation interface with an official account registered at the instant messaging service from a client, providing a rich menu user interface associated with the official account on a portion of the conversation interface when the client establishes the conversation interface in response to the request, receiving a selection on a display item included in the rich menu from the client, identifying content associated with the selected display item by a manager of the official account, and providing the identified content to the client through the conversation interface.

Abstract: Disclosed are a system, method, device, and/or non-transitory computer readable medium for providing an instant messaging service implemented with a computer. The method includes receiving a request on establishing a conversation interface with an official account registered at the instant messaging service from a client, providing a rich menu user interface associated with the official account on a portion of the conversation interface when the client establishes the conversation interface in response to the request, receiving a selection on a display item included in the rich menu from the client, identifying content associated with the selected display item by a manager of the official account, and providing the identified content to the client through the conversation interface.

Abstract: Disclosed are a system, method, device, and/or non-transitory computer readable medium for providing an instant messaging service implemented with a computer. The method includes receiving a request on establishing a conversation interface with an official account registered at the instant messaging service from a client, providing a rich menu user interface associated with the official account on a portion of the conversation interface when the client establishes the conversation interface in response to the request, receiving a selection on a display item included in the rich menu from the client, identifying content associated with the selected display item by a manager of the official account, and providing the identified content to the client through the conversation interface.

Abstract: A processing system and a method therefor are provided. The method includes receiving a selection signal that a payment on delivery linked with a mobile application is designated as a payment mode for goods, from a terminal of a user, in which the mobile application is installed, generating an order request signal as a payment server which connects with the terminal over a network matches goods identification data associated with the goods with user identification data of the user who is registered in the mobile application to correspond to each other; verifying ordered records associated with the user identification data and starting a payment session for payment as the terminal executes the mobile application according to an operation of the user who receives the goods, and receiving a payment completion signal generated from the payment session and paying for the goods according to the goods identification data.

Abstract: Disclosed are a system, method, device, and/or non-transitory computer readable medium for providing an instant messaging service implemented with a computer. The method includes receiving a request on establishing a conversation interface with an official account registered at the instant messaging service from a client, providing a rich menu user interface associated with the official account on a portion of the conversation interface when the client establishes the conversation interface in response to the request, receiving a selection on a display item included in the rich menu from the client, identifying content associated with the selected display item by a manager of the official account, and providing the identified content to the client through the conversation interface.

Abstract: Disclosed is a method of processing a payment using an IMS. The method includes obtaining information on a chat room generated through an instant message application between a first user and at least one second user with respect to a payment transaction of the first user, updating a payment account of the first user and a payment account of the at least one second user in response to processing the payment transaction of the first user, and outputting a message associated with the payment transaction of the first user through the chat room.

Abstract: Provided is a system and method for collecting a document. The system may include an identification information receiver to receive, from a host of a site, identification information of a document of which an update may occur, a collection request transfer unit to transmit a collection request for the document based on the identification information, an update information collector to receive update information of the document from the host, and a search result provider to provide, to the host, a search result extracted from the update information of the document, in response to the search request being received from the host. The system for collecting the document may reduce load of a web site, and may improve accuracy of the document to be collected.

Abstract: Provided is a system and method for collecting a document. The system may include an identification information receiver to receive, from a host of a site, identification information of a document of which an update may occur, a collection request transfer unit to transmit a collection request for the document based on the identification information, an update information collector to receive update information of the document from the host, and a search result provider to provide, to the host, a search result extracted from the update information of the document, in response to the search request being received from the host. The system for collecting the document may reduce load of a web site, and may improve accuracy of the document to be collected.