Abstract: An air mobility device improves propulsion due to the Coand? effect when flying so as to increase a flying range and reduces noise when flying.

Abstract: The present invention relates to a method for producing a culture medium-derived component or a crystallized culture medium using a PCA (Precipitation with Compressed Fluid Anti-solvent) drying process, a method for restoring chondrocytes using the culture medium-derived component or the crystallized culture medium prepared by way of the above method, a method for treating a subject having osteoarthritis by way of the method for restoring chondrocytes using the culture medium-derived component or the crystallized culture medium, a method for treating a subject having osteoarthritis using the culture medium-derived component or the crystallized culture medium, and the use of the culture medium-derived component or the crystallized culture medium for the treatment of osteoarthritis.

Abstract: An apparatus that provides a feedback effect regarding on a social network service includes a post generation unit configured to receive a post that has a tag associated with a feedback effect from a user device and post the post on the social network service, a feedback collection unit configured to collect feedback in response to the post from another user device that accesses the post, and an effect providing unit configured to apply a predetermined feedback effect corresponding to the tag included in the post according to predetermined condition, wherein the predetermined feedback effect is selected from among multiple feedback effects preset for one or more of tags, and the predetermined condition includes at least one of a type of the feedback and a quantity of the feedback.

Abstract: An apparatus that provides a feedback effect regarding on a social network service includes a post generation unit configured to receive a post that has a tag associated with a feedback effect from a user device and post the post on the social network service, a feedback collection unit configured to collect feedback in response to the post from another user device that accesses the post, and an effect providing unit configured to apply a predetermined feedback effect corresponding to the tag included in the post according to predetermined condition, wherein the predetermined feedback effect is selected from among multiple feedback effects preset for one or more of tags, and the predetermined condition includes at least one of a type of the feedback and a quantity of the feedback.

Abstract: A method and apparatus for generating and storing a secondary index. The method includes generating, in response to a size of an index data being greater than a size of a memory block, an index data table including the index data and recording the index data table in a memory, generating a metadata table of the index data table and recording the metadata table in the memory, and performing a merge and sort regarding at least one of the index data table and the metadata table. The apparatus includes a memory; and a controller configured to, in response to a size of index data being greater than a size of a memory block, generate an index data table including the index data and record the index data table in a memory, and perform a merge and sort regarding at least one of the index data table and the metadata table.

Abstract: A method and apparatus for generating and storing a secondary index. The method includes generating, in response to a size of an index data being greater than a size of a memory block, an index data table including the index data and recording the index data table in a memory, generating a metadata table of the index data table and recording the metadata table in the memory, and performing a merge and sort regarding at least one of the index data table and the metadata table. The apparatus includes a memory; and a controller configured to, in response to a size of index data being greater than a size of a memory block, generate an index data table including the index data and record the index data table in a memory, and perform a merge and sort regarding at least one of the index data table and the metadata table.

Abstract: The present invention relates to a method of embodying a cooperation system between SEND and IPSec in an IPv6 environment. The cooperation system between SEND and IPSec in accordance with the present invention includes: receiving an authentication completion report message including a first IP address of a host whose authentication is completed by the SEND; generating new authentication information corresponding to the host and storing the new authentication information in a temporary storage area, if authentication information for the host is not present in the temporary storage area, wherein the authentication information includes the first IP address; and if an authentication check request message including a second IP address is received from the IPSec, checking whether the second IP address is present in the temporary storage area, and sending the result of checking to the IPSec.

Abstract: Disclosed is a method and system for controlling access for a mobile agent in a home network environment. The method includes the steps of: issuing a role ticket to the mobile agent; verifying access authority to service requested by the mobile agent through the role ticket; and granting the mobile agent access authority to the service. Accordingly, a table for managing access authority of a user is distributed to devices, so that it is possible to provide the mobile agent access control method and system capable of minimizing network traffic in the home network environment.

Abstract: A context-aware role-based access control system and a control method thereof. The context-aware role-based access control system includes: a context-aware user assignment manager (CAUAM) for performing a role assignment function, a role delegation function, or a role revocation function for a user according to a context of the user, based on a preset context request condition; a context-aware permission assignment manager (CAPAM) for performing a permission modification, a permission restoration, and a personalized permission modification for a permission, which the role has, according to changes in the context of the user; an information repository for storing a user profile and context information; and an access control manager (ACM) for controlling the context-aware user assignment manager, the context-aware permission assignment manager, and the information repository, and processing an access control request.

Abstract: A context-aware role-based access control system and a control method thereof. The context-aware role-based access control system includes: a context-aware user assignment manager (CAUAM) for performing a role assignment function, a role delegation function, or a role revocation function for a user according to a context of the user, based on a preset context request condition; a context-aware permission assignment manager (CAPAM) for performing a permission modification, a permission restoration, and a personalized permission modification for a permission, which the role has, according to changes in the context of the user; an information repository for storing a user profile and context information; and an access control manager (ACM) for controlling the context-aware user assignment manager, the context-aware permission assignment manager, and the information repository, and processing an access control request.

Abstract: Disclosed is a method and system for controlling access for a mobile agent in a home network environment. The method includes the steps of: issuing a role ticket to the mobile agent; verifying access authority to service requested by the mobile agent through the role ticket; and granting the mobile agent access authority to the service. Accordingly, a table for managing access authority of a user is distributed to devices, so that it is possible to provide the mobile agent access control method and system capable of minimizing network traffic in the home network environment.

Abstract: The present invention relates to a method of embodying a cooperation system between SEND and IPSec in an IPv6 environment. The cooperation system between SEND and IPSec in accordance with the present invention includes: receiving an authentication completion report message including a first IP address of a host whose authentication is completed by the SEND; generating new authentication information corresponding to the host and storing the new authentication information in a temporary storage area, if authentication information for the host is not present in the temporary storage area, wherein the authentication information includes the first IP address; and if an authentication check request message including a second IP address is received from the IPSec, checking whether the second IP address is present in the temporary storage area, and sending the result of checking to the IPSec.