Abstract: The present invention relates to a resource allocation method and a resource allocation apparatus. When the resource allocation apparatus according to the present invention receives information of a plurality of bands selected from a plurality of mobile stations operating in a band adaptive modulation and coding mode, depending on the channel status, the apparatus arranges the mobile stations on the basis of the maximum number of logically adjacent bands included in the band information, and allocates the resource on the basis of the order of the arranged mobile stations.

Abstract: Provided are a frequency modulation/demodulation apparatus using a frequency selective baseband and a transmitting/receiving apparatus using the same. In a frequency selective baseband transmission technique or an FS-CDMA technique, a transmission rate is controlled according to communication channel environment, spread code groups are repeatedly selected in a receiving side so as to obtain a frequency diversity gain. Accordingly, it is possible to reduce interference between users. In addition, even in a case where strong interference induced from electronic exists, it is possible to implement low-power, stable human-body communication and to ensure a communication quality.

Abstract: Disclosed are a telematics system using human body communication, a portable device having a telematics function using human body communication, and a method for providing a telematics service using human body communication. The telematics system using human body communication includes: a vehicle receiving an authentication key from at least one portable device through human body communication using a human body as a medium, and controlling the opening and closing of a door of the vehicle based on whether or not the received authentication key is valid; and a first portable device transmitting a first authentication key through a user's body in contact with the vehicle.

Abstract: Provided are a composition for stimulating differentiation of MSCs into osteoblasts, which includes cryptotanshinone, and an osteogenesis stimulator including cryptotanshinone and MSCs. When the cryptotanshinone is treated to the MSCs, the differentiation into osteoblasts is stimulated, and thus osteogenesis of a patient may be stimulated by directly transplanting the differentiation-induced MSCs to the patient. Accordingly, the composition or osteogenesis stimulator may be used to treat patients having disability requiring stimulation of osteogenesis such as osteoporosis, bone fracture, bone grafting including alveolar bone grafting for implant placement, or other bone defects.

Abstract: A deposition amount measuring apparatus includes a plate-shaped body having a rotating shaft, a plurality of deposition amount sensors along side surfaces of the body, the deposition amount sensors being configured to measure an amount of deposition material, and a housing surrounding the body, the housing including an inflow port that exposes one of the deposition amount sensors.

Abstract: A crane for loading and unloading a cargo includes multi-stage trolley. The multi-stage trolley for a crane includes a first trolley movable in a longitudinal direction along a boom of the crane; a second trolley movable in a lateral direction on the first trolley; a hoisting wire provided in the longitudinal direction along the boom; a spreader connected to the hoisting wire through the first trolley and the second trolley and supported by the hoisting wire, the spreader being movable in a vertical direction according to a movement of the hoisting wire. The multi-stage trolley further includes a sheave block unit for changing a direction of the hoisting wire to maintain a vertical level of the spreader constant when the first trolley and/or the second trolley is moved.

Abstract: The present invention relates to an apparatus and method for managing files in a distributed storage system. The apparatus and method for managing a file in a distributed storage system according to the present invention counts the number of inquiries on a file requested by a client; selects the file as a hot file if the number of inquiries counted in a certain counting period is larger than a hot file selection threshold value; and increases the number of copies of the file selected as a hot file or stores the file selected as a hot file in a storage device having a relatively good performance.

Abstract: There is provided a chair and multimedia player comprising a sound transmission apparatus performing human-body communications. The chair and multimedia player comprise at least one sound transmission apparatus, wherein the sound transmission apparatus is disposed in a surface of the chair and multimedia player to allow a user to hear a sound signal when the user is in contact with or adjacent to the surface, and the sound transmission apparatus generates a composite signal including a sound signal and a demodulation signal restoring only the sound signal from the composite signal and outputs the generated composite signal and demodulation signal into a human body in order to restore the sound signal within the vicinity of the ears of the user.

Abstract: Provided is a launchable remote-control attack device that enables an operator to remotely grasp the status of a target place and to remotely control weapons it has been equipped with to perform an attack using explosives or gas when necessary. The remote-control attack device includes a cylindrical body with a camera, drivers which are made up of two tires that are disposed on opposite sides of the body and can be driven individually, and battery units for supplying power and which are disposed in central openings of the tires of the drivers. The attack device further includes a plurality of storage units and a wireless control unit.

Abstract: Disclosed herein are a wearable wireless power transmission apparatus and a wearable wireless power transmission using the same. The apparatus includes a wearable energy harvesting unit, a wearable battery unit, a wearable power charging unit, a wearable power transmission processing unit, and a fiber-type primary coil unit. The wearable energy harvesting unit generates power from at least one of light energy and kinetic energy, and is attachable to fabric. The wearable battery unit stores the power, and is attachable and detachable to and from the fabric. The wearable power charging unit rectifies the power, charges the wearable battery unit, and is attachable and detachable to and from the fabric. The wearable power transmission processing unit generates a transmission signal, and is attachable and detachable to and from the fabric. The fiber-type primary coil unit wirelessly transmits the transmission signal to the secondary coil unit of the power reception terminal.

Abstract: Disclosed are a method for requesting, generating and distributing a service-specific traffic encryption key in a wireless portable Internet system, an apparatus for the same, and a protocol configuration method for the same. In the present invention, a subscriber station sends a Key Request message for requesting a service-specific traffic encryption key to the base station using a PKM-REQ MAC message, and a base station analyzes the Key Request message to generate the requested service-specific traffic encryption key. Subsequently, the base station sends a Key Reply message, including the generated service-specific traffic encryption key, to the subscriber station using a PKM-RSP MAC message. If the base station fails to generate the key, the base station sends a Key Reject message, including a reason for the failure, to the subscriber station.

Abstract: The present invention relates to a protocol data unit (PDU) reordering method in a wireless communication system. The terminal maintains the number of bytes of PDUs stored in the buffer for reordering PDUs received in a sequence that is changed due to HARQ error correction to thereby prevent overflow of the reordering buffer. When the HARQ function unit transmits a PDU received at the radio access control RAS (S101), the PDU reordering unit of the access terminal sets a current frame number as an arrival frame number of the received PDU (S102). When a current frame number is stored as an arrival frame number of a received frame, the PDU reordering unit compares a sequence number (SN) of a received PDU with a sequence number of a PDU that is about to be reordered (S 103). If the PDU has already been reordered, the received PDU is discarded (S 104).

Abstract: Provided are an apparatus and a method for controlling human body contact of ground electrode, and a human body communication system using the same. The apparatus includes a resistance measuring unit for applying a predetermined voltage to a human body through a signal electrode, to measure a resistance value between the signal electrode and the ground electrode; a contact control unit for determining whether the ground electrode needs to contact the human body by using the measured resistance value, to provide control information associated with human body contact; and a contact performing unit for bringing the ground electrode into contact or out of contact with the human body according to the control information.

Abstract: The present invention relates to a call connection control method used by defining a state function matrix when a base station controls call connection of a terminal, and a method for generating the state function matrix. In a call connection process, a call state varies and an access point control subsystem receives messages from a terminal and an access point traffic subsystem. The access point control subsystem calls a state function corresponding to the received message and a current call state among a plurality of state functions that are respectively mapped to a plurality of elements of the state function matrix when receiving the message, and operates the state function. The state function matrix may include a plurality of call states as one index among row and column indexes, and a plurality of messages as the other index.

Abstract: During a listening window after a sleep window, a terminal receives a control signal that indicates existence of data corresponding to the terminal, and enters a sleep window if no data corresponding to the terminal exists.

Abstract: A frequency selective modulation apparatus and method using re-spreading codes are disclosed. The frequency selective modulation apparatus includes: a serial-to-parallel converter receiving transmission data and performing serial-to-parallel conversion on the transmission data at a pre-set ratio; one or more sub-frequency selective spreaders selecting one spreading code by using data bits received from the serial-to-parallel converter; a majority value selection unit selecting a majority value from one or more spreading codes which have been selected by each of the one or more of the sub-frequency selective spreaders; and a first XOR logic circuit XORing an output of the majority value selection unit and a re-spreading code Wn to re-spread a frequency selective baseband to a frequency selective passband.

Abstract: A walking guidance apparatus using human body communication, including: a first human body communication device acquiring a walking guidance information signal, converting the acquired walking guidance information signal into a signal available for human body communication, and transmitting the converted signal through a user's body; and a second human body communication device receiving the signal transmitted through the user's body from the first human body communication device, converting the received signal into a signal that can be recognized by the user, and outputting the converted signal. Walking guidance information having a high privacy function and high stability and accuracy can be provided to enhance user convenience.

Abstract: Disclosed is a micro flow control injector for use in an ultramicro mono-propellant based pneumatic generator, including: a first check valve installed on a first supply pipe connected to a fuel tank charged with a mono-propellant and preventing a flow from the first supply pipe to the fuel tank; a small-sized driver connected with the first supply pipe and minutely controlling the supplied flow while repeatedly generating a decompression state and a pressurization state in the first supply pipe by a reciprocating movement; a second supply pipe connected to a cylinder of the small-sized driver to discharge fuel to a reactor in a pressurization state; and a second check valve installed on the second supply pipe and preventing a flow from the second supply pipe to the small-sized driver and the first supply pipe, in order to minutely control a flow.

Abstract: Provided are an apparatus and method for stabilizing a pulse of a fiber-type femtosecond laser, and more particularly, to an apparatus for stabilizing a pulse of a fiber-type femtosecond laser, which adjusts a distance between a saturable absorption material and an optical fiber connection unit of the femtosecond laser to automatically perform mode-locking, thereby obtaining a laser pulse stabilized for a long time, and a method for stabilizing the pulse of the fiber-type femtosecond laser. The apparatus for stabilizing a pulse of a fiber-type femtosecond laser in a fiber-type femtosecond laser system including a pump laser (100) and a fiber cavity (200) includes a distance adjustment part (300) adjusting a distance (d) between a saturable absorption material (700) and a connection unit of an optical fiber (310) which are provided within the fiber cavity (200).

Abstract: The present disclosure enables a user to intuitively recognize a rotation direction of a rehabilitation exercise by giving preset stimuli to a body of the user by using a vibration of the haptic device until the body of the user rotates up to a target point.