Abstract: Disclosed is a method for generating a 3D image of a left ventricle of the heart. The method includes: acquiring, by an image processor, a 2D left ventricle image; extracting, by the image processor, left ventricle boundary coordinates from the 2D image; calculating, by a controller, a position of the left ventricle in 3D space through transformation of the extracted left ventricle boundary coordinates; and generating, by the controller, a 3D left ventricle image based on the calculated position of the left ventricle in 3D space.

Abstract: The present invention relates to a method of determining a routing path in a communication network in which a plurality of logical networks shares a physical network, and more particularly to such a method of determining a routing path of data, in which multiple routing paths from a source node to a destination node are created based on a change in the dynamic state of a plurality of nodes constituting a logical network, and routing costs for the created multiple routing paths are calculated based on a routing registration message received from the plurality of nodes, and a process time transition value and a transmission time transition value shared by the plurality of nodes.

Abstract: The present invention relate to a content caching device, and more particularly, to such a content caching device in which the priority of a content requested by a user terminal is calculated based on content usage features such as the number of requests or the latest request interval of the requested content, and the like, the requested content is controlled to be selectively stored in a short-term storage unit based on the calculated priority of the requested content, and among the contents stored in the short-term storage unit, a content needed to be stored for a long time period is controlled to be stored in a separate long-term storage unit based on the storage time of the requested content in the short-term storage unit.

Abstract: Disclosed herein are a content-based network system and a method of controlling the transmission of content therein. The content-based network system includes a plurality of user terminals, a plurality of access points, a plurality of content origin servers, and a transmission control device. The plurality of access points is wirelessly connected to the plurality of user terminals. The plurality of content origin servers provides content to the access points. The transmission control device determines the priority of transmission of the content based on the characteristics of the content and allocates channels and sets interfaces based on the determined priority of transmission of the content.

Abstract: The present invention relate to a method for authenticating a low performance device, and more particularly, to a device authenticating method, in which a low performance device such as a smart meter of a smart grid is authenticated in a matrix operation instead of an exponential operation through a homomorphic hash function (HHF) of a non-square matrix M, so that the amount of operations required for authenticating the device can be reduced and the device can be safely authenticated even without a separate certificate authority.

Abstract: The present invention relate to a content caching device, and more particularly, to such a content caching device in which the priority of a content requested by a user terminal is calculated based on content usage features such as the number of requests or the latest request interval of the requested content, and the like, the requested content is controlled to be selectively stored in a short-term storage unit based on the calculated priority of the requested content, and among the contents stored in the short-term storage unit, a content needed to be stored for a long time period is controlled to be stored in a separate long-term storage unit based on the storage time of the requested content in the short-term storage unit.

Abstract: An identity-based ring signature authentication method provides an efficient identity-based ring signature method, which has a constant number of bilinear pairing computations independent the number of ring members in a verification process. The method does not use a special type of function, e.g., MapToPoint.