Abstract: An illegal call detection apparatus comprises a data collecting unit, a preprocessing unit, and a learning unit. The data collecting unit collects, from at least one of a subscriber terminal or a call exchanger, a raw packet generated by the subscriber terminal using a VoIP service, and collects, from the billing server, CDR data related to the raw packet. The preprocessing unit generates learning data by using service usage information extracted from the CDR data and service detailed information extracted from the raw packet, and generates a training image by converting the training data into an image according to a predetermined imaging rule. The learning unit extracts at least one or more features from the training image, and learns whether the training image is related to an illegal call by using the features, through an illegal call detection model.

Abstract: The present application provides a composite material and a method for preparing the same. The present application can provide a composite material which comprises a metal foam, a polymer component and a thermally conductive filler, and has other excellent physical properties such as impact resistance, processability and insulation properties while having excellent thermal conductivity.

Abstract: The present application provides a method for producing a film. In the present application, for example, a method for producing a film which can be applied to production of a heat-dissipating material such as a heat pipe can be provided.

Abstract: The present application provides a composite material and a method for preparing the same. The present application can provide a composite material which comprises a metal foam and a polymer component and if necessary, further comprises a thermally conductive filler, and has other excellent physical properties such as impact resistance, processability and insulation properties while having excellent thermal conductivity.

Abstract: The present application provides a method for preparing a metal foam. The present application provides a method which can freely control characteristics, such as pore size and porosity, of the metal foam, prepare the metal foam in the form of films or sheets which have conventionally been difficult to produce, particularly the form of thin films or sheets as well, and prepare a metal foam having excellent other physical properties such as mechanical strength. According to one example of the present application, it is also possible to efficiently form a structure in which the metal foams as above are integrated with good adhesive force on a metal base material.

Abstract: The present application provides a method for preparing a heat pipe. The present application can provide a method for preparing a heat pipe exhibiting excellent heat dissipation characteristics and durability even when formed to a thin thickness as necessary.

Abstract: The present application relates to a method for preparing a metal foam. The present application can provide a method capable of preparing a metal foam which is thin and has suitable porosity and pore sizes by a simple and efficient process.

Abstract: Provided are a method and device for setting control authority and providing additional information when content is shared. A device control method for controlling a user device having a display includes displaying content on the display of the user device by using a screen sharing service for sharing the displayed content with an external device; transmitting control authority setup information indicating that the user device has control authority of the screen sharing service, to the external device; and transmitting a control command associated with the screen sharing service to the external device according to the control authority.

Abstract: A server, a user terminal and a method of providing service by uploading at least one content list generated by packaging a plurality of content, extracting a core content by considering a packaging frequency for each content included in the at least one content list; and recommending an extracted core content to a user if requested by a user.

Abstract: A method and system for creating a mixed world that reflects a real state is provided. The system includes a mirror world creation module which creates a mirror world that represents the structure of a real world; an object information collection module which collects real object information; and a mixed world creation module which creates a mixed world by reflecting the real object information into the mirror world.

Abstract: Provided is an information search apparatus and method. The method includes extracting first information and second information from specific information that is received; determining whether the second information satisfies specific conditions; generating a query by combining the second information and the first information if it is determined that the second information satisfies the specific conditions; and transmitting the generated query to a terminal.