Abstract: A fuel cell reformer includes a main body having a first pipe with a second pipe inside the first pipe, a thermal source unit in the second pipe, a reforming reaction unit in a first region between the first pipe and the second pipe to generate a reforming gas containing hydrogen through a reforming reaction of a fuel, and a carbon monoxide reduction unit in a region other than the first region between the first pipe and the second pipe to reduce a concentration of carbon monoxide contained in the reforming gas. A thermal treatment unit in the main body supplies thermal energy to the reforming reaction unit and the carbon monoxide reduction unit at a time of initial driving of the reformer such that the supplied thermal energy corresponds to a unique operational temperature range in the reforming reaction unit, and to a unique operational temperature range in the carbon monoxide reduction unit.

Abstract: A method of perceptual 3-dimensional (3D) shape description and a method and apparatus for searching a perceptual 3D graphics model database established using the description method are provided. The description method includes: generating nodes that respectively correspond to parts of a part-based representation of a 3D shape model, the nodes including unary attributes of the parts; generating edges that include relational attributes between the nodes; and generating an attributed relational graph of the 3D shape model that is comprised of the nodes and the edges. The search method includes: receiving a predetermined 3D graphics model; transforming the received 3D graphics model into a perceptual 3D shape descriptor; and comparing the perceptual 3D shape descriptor with each of the perceptual 3D graphics models stored in the database to retrieve the 3D graphic models that are similar to the perceptual 3D shape descriptor.

Abstract: A fuel cell system for supplying electricity to a load system, the fuel cell system comprising a fuel cell unit generating electricity from air and fuel, a power supply unit supplying the load system with electricity, the power supply unit being charged with the electricity generated from the fuel cell unit in a selective manner, a control unit monitoring a charge condition of the power supply unit and operating the fuel cell unit in order to charge the power supply unit when the power supply unit is discharged to a predetermined level or lower and an output unit supplying the electricity output from the power supply unit to the load system.

Abstract: A method of controlling a flow rate of fuel in a fuel supply unit of a fuel cell system is provided. The fuel cell system includes a fuel pump, a revolution per minute (RPM) measuring unit, a microcomputer, and a power converter. The method of controlling the flow rate controls the fuel supply unit so as to supply the fuel to a reformer reforming the fuel to generate hydrogen or a stack generating electric energy through a reaction of the fuel and oxygen. The method of controlling the flow rate includes measuring an actual RPM of the fuel pump; comparing the actual RPM to a reference RPM of the fuel pump; and adjusting a driving voltage of the fuel pump on the basis of the comparison result.

Abstract: An apparatus and/or system implements a method for storing and reproducing contents received through broadcast signals, where the method of managing content includes reconstructing a broadcast signal received from a broadcasting company, transmitting a content ID and predetermined authentication information to the broadcasting company, the content ID used to discriminate content contained in the broadcast signal, receiving content management information including a content key corresponding to the content ID from the broadcasting company, encrypting the content using the content key, and storing the encrypted content in a content storage apparatus.

Abstract: A path-conversion valve assembly for a vacuum cleaner comprises a valve member rotatably mounted in an air path formed in a cleaner of a vacuum cleaner which includes a socket for receiving a hose nozzle, and a resilient member mounted in the air path to resiliently press the rotating valve member in an opposite direction to the rotating direction of the valve member.

Abstract: A fuel cell stack includes a first separator and a second separator, each separator having raised portions and channel portions on a first side and a second side, the channel portions on the first side being opposite the raised portions on the second side and the channel portions on the second side being opposite the raised portions on the first side. The stack also includes a membrane-electrode assembly located between the first separator and the second separator, and closely contacting the raised portions of the first side of the first separator and the raised portions of the second side of the second separator.

Abstract: The retention device comprises a clip and a back plate engaging the clip, the clip comprises pressing members for press the heat sink onto the processor and at least a pair of hooks, the back plate is placed below a printed circuit board on which the processor is mounted, and comprises a body and at least a pair of retaining rings mounted thereof. The retaining rings travel through mounting holes in the printed circuit board and beyond the top surface thereof for catching the hooks of the clip.

Abstract: A fan duct includes an immovable cylinder and a movable cylinder. The movable cylinder is capable of sliding in an axial direction of the immovable cylinder. One of the immovable cylinder and the movable cylinder defines at least one groove in an axial direction thereof. Each groove defines at least two locating slots communicating with the respective groove. The other of the immovable cylinder and the movable cylinder forms at least one pin corresponding to the groove, the pin being capable of selectively sliding into any one of the locating slots. A related heat dissipation assembly including the fan duct is also disclosed.

Abstract: A data transmission method and a data transmission system using an improved network address translation method. The data transmission method includes requesting a real-time service from a multimedia device to a home gateway within a home network; inputting a binary code corresponding to the multimedia device to a service type field indicating priority information of data when the home gateway forms a mapping table used for conversion of addresses; the home gateway requesting setting of an IP address of the multimedia device from a service provider; setting the IP address including the binary code corresponding to the multimedia device according to the request of setting the IP address; and the service provider transmitting a data packet including the binary code corresponding to the multimedia device. The method is applied to the selective IP packet, thereby shortening the transmission time of real-time data packets for multimedia.

Abstract: A system where a home server can recognize a location of a home device in a home network. The home device includes a Radio Frequency Identification (RFID) tag which stores information about the home device, and each plug receptacle constituting the home network has an RFID reader. Accordingly, the RFID reader checks the location of the RFID tag in real time and transfers the information about the RFID tag and a receptacle identifier to a home server, so that the home server recognizes the location of the home device in real time using the information transferred. Therefore, using the transferred information, the home server can recognize in real-time the location of the home device, and also transfer necessary information to the home device.

Abstract: A home-network and a method for allocating channels are provided. The home-network includes a buffer having queues and temporarily storing a data to be transmitted to each device, a priority sense part determining if the data of a packet unit transmitted from an outer server has a high priority for transmission and first inputting the data with a high priority into the queue of the buffer, a frame sense part sensing how many packets are included in one frame of the data stored in the buffer, and a channel allocation part allocating channels if enough channels are available for the transmission of a whole frame according to the number of packets sensed by the frame sense part. Accordingly, it is possible to reduce a delay time of wireless data, and channels are allocated according to the order of receipt of the data such that all devices perform equally.

Abstract: A multi-cyclone dust separating apparatus includes: a multi-cyclone unit including a first cyclone chamber body having a first cyclone chamber and at least one protection chamber formed around at least a portion of an outer circumference of the first cyclone chamber, and at least one secondary cyclone chamber body disposed in the protection chamber, each secondary cyclone chamber body having at least one secondary cyclone chamber; a cover unit connecting an upper end of the multi-cyclone unit and guiding air discharged from the first cyclone chamber to the at least one secondary cyclone chamber; a dirt collecting unit adapted to connect to a lower end of the multi-cyclone unit and configured to collect dirt separated from the air in the first and secondary cyclone chambers; and an air discharge duct configured to discharge air that has passed through the multi-cyclone unit.

Abstract: A locking device (30) for mounting a heat sink (40) to a CPU (70), includes a supporting member (32), a pair of locking members (33) pivotably attached to the supporting member and each having a connecting portion (332) and a hook (333), a pressing member (34) resting on the connecting portions, a spring installed between the supporting member and the connecting portions, and an operating member (31) pivotably attached to the supporting member. The operating member is pivotable between a first position at which the operating member abuts against the pressing member and the locking members are located at a released position and a second position at which the abutting portion releases the pressing member to allow the elastic member to drive the locking members to interlock with a retention module around the CPU.

Abstract: A suction apparatus that sucks in air laden with dust and/or foreign substance while moving along a surface to be cleaned and a cleaning device having the same are provided. The suction apparatus includes a suction body, a rotary brush rotatably installed in the suction body, and brushing the dust and/or foreign substance of the surface to be cleaned in rotation, a power transmitting belt disposed in a belt mounting part formed in the suction body, and transmitting a rotating force of motor installed adjacent to the suction body to the rotary brush, and an air circulation part sending air in the belt mounting part to outside to remove a heat produced at the power transmitting belt. The air circulation part removes the heat produced at the power transmitting belt in the belt mounting part.

Abstract: A suction port assembly for use in a vacuum cleaner is foldable so that it can clean a surface being cleaned in close contact. Accordingly, the cleaner can easily clean the cleaning surface even with a slope or angle, while maintaining a suction efficiency of the cleaner constantly. Additionally, damage to the suction port assembly due to collision with the cleaning surface can be avoided.

Abstract: A brush assembly is provided which comprises a brush housing, and a brush disposed in the brush housing to contact a cleaning surface. The brush housing comprises a brush supporter dividing an inner space of the brush housing and supporting one side of the brush, and a connection passage fluidly communicating with the divided inner spaces.

Abstract: A transimpedance amplification apparatus includes a signal source for generating a current signal, a source follower stage, a common source stage and a shunt feedback resistor. The source follower stage having a source follower structure receives the current signal to reduce an impedance of the signal source. The common source stage, following the source follower stage, driven by the reduced signal source impedance, amplifies the current signal to extend a frequency bandwidth of the current signal and buffers the amplified signal with the extended frequency bandwidth thereof maintained, wherein the reduced signal source impedance serves to extend a frequency bandwidth of the common source stage. The shunt feedback resistor, which is installed between the source follower stage and the common source stage, adjusts an input DC bias of the source follower stage and increasing a transimpedance gain of the common source stage.

Abstract: A biosensor and a sensing cell array using a biosensor are disclosed. Adjacent materials containing a plurality of different ingredients are analyzed to determine the ingredients based on their magnetic susceptibility or dielectric constant. A sensing cell array includes such as a magnetization pair detection sensor including a MTJ (Magnetic Tunnel Junction) or GMR (Giant Magnetoresistive) device, a magnetoresistive sensor including a MTJ device and a magnetic material (current line), a dielectric constant sensor including a sensing capacitor and a switching device, a magnetization hole detection sensor including a MTJ or GMR device, a current line, a free ferromagnetic layer and a switching device, and a giant magnetoresistive sensor including a GMR device, a switching device and a magnetic material (or forcing wordline).