Abstract:
본 발명은 대용량 VOD(Video-On-Demand) 스트리밍 서비스를 제공함에 있어 클라이언트-서버 구조를 대체할 수 있는 사용자 도움형 비디오 전송 기법을 제안함으로써 적은 비용으로 안정적인 대용량 VOD 스트리밍 서비스를 제공하는 주기적 멀티캐스트를 활용한 사용자 도움형 멀티미디어 전송 방법 및 장치를 제공한다.
Abstract:
Provided are a hybrid porous structure which comprises a matrix including a plurality of first pores interconnected toward 3D direction and porous materials including second pores filling some or entire of each first pore; the use of the same as a separation membrane; and a manufacturing method thereof.
Abstract:
본원은 기재 상에 형성되며 굴곡된 표면을 가지는 고분자 전해질 층, 및 상기 고분자 전해질 층의 굴곡된 표면에 형성된 무기물 나노 구조체를 포함하는, 유무기-하이브리드 계층적 구조체, 및 상기 유무기-하이브리드 계층적 구조체를 이용한 초소수성 또는 초친수성 표면의 제조방법을 제공한다.
Abstract:
A provided is an inter-layer group communication method in a content centric networking environment. The inter-layer group communication in a content centric networking (CCN) environment among the embodiments includes: a step that a CCN router receives an attendance message having a service name which a user node subscribes from the user node; a step that the CCN router transmits the attendance message toward a rendez-vous point which is mapped with the service name and forms a group sharing tree; a step that the CCN router receives a content request message having a content name which the CCN router wants to receive from the user node through the service; and a step that the CCN router transmits the content request message through uplink and downlink interfaces which are connected to the group sharing tree. [Reference numerals] (AA) Start; (BB) End; (S310) User node generating an attendance message including a service name; (S320) Transmitting the attendance message to a CCN router; (S330) Transmitting the attendance message toward a rendez-vous point; (S340) Generating a group sharing tree based on the rendez-vous point; (S350) CNN router receiving the contents request message and adding the corresponding interface to a reception interface list of PIT; (S360) Interface not transmitting the contents request message exists?; (S380) Transmitting through an interface existing on the reception interface list of PIT when receiving the requested contents; (SS370) Transmitting the contents request message and adding the corresponding interface to a transmission interface list of PIT
Abstract:
PURPOSE: A hybrid porous structure, a method for manufacturing the hybrid porous structure, a separating membrane including the hybrid porous structure, and a water treatment device including the same are provided to function as a separating membrane for variety of separating target materials. CONSTITUTION: A hybrid porous structure(10) includes a non-porous template(2), an ionic polymer coating layer(1), pores, and necks. The necks are in connection with pores arranged at the center part of a spherical body. A method for manufacturing the hybrid porous structure includes the following steps of: forming a laminate by laminating a plurality of spherical particles for forming macropores to be bordered in a three dimensional direction; forming a non-porous template by injecting a material for forming the non-porous template and curing; forming a non-porous template with densely laminated spherical macropores by dissolving and removing the spherical particles for forming macropores; and coating the inner surface of the macropores of the non-porous template with an ionic polymer solution to form an ionic polymer coating layer, and forming the hybrid porous structure.
Abstract:
PURPOSE: An organic/inorganic-hybrid layered structure, a manufacturing method of superhydrophobic using thereof, or a super-hydrophilic surface are provided to manufacture an organic and inorganic hybrid layered structure without special equipment through a simple process. CONSTITUTION: An organic/inorganic-hybrid layered structure is formed on a substrate and includes a polymer electrolyte layer which has curved surface and inorganic nanostructure which is formed on curved surface of the polymer electrolyte layer. The organic and inorganic hybrid layered structure additionally includes surface energy gradient material on the inorganic material nanostructure so that the structure can have ultrahydrophobicity or super hydrophilicity. A manufacturing method of ultrahydrophobic or super hydrophilic surface comprises the following steps: forming polymer electrolyte layer on a substrate; forming polyelectrolyte/inorganic nanoparticle composite layer which has surface roughness by forming inorganic nano particles on the polymer electrolyte layer; and forming an organic and inorganic- hybrid layered structure by removing the polyelectrolyte from the multiple layers.