Abstract: It is intended to provide a semiconductor ceramic composition containing no Pb, which is capable of shifting the Curie temperate to a positive direction as well as of controlling room temperature resistivity and having an excellent jump characteristic. Since the semiconductor ceramic composition in which a portion of Ba of BaTiO3 is substituted by Bi—Na has a crystal in which a central part and an outer shell part of a crystal grain are different from each other in composition, the composition is capable of improving control of room temperature resistivity and a jump characteristic, and therefore it is optimum as a material for a PTC thermistor, a PTC heater, a PTC switch, a temperature detector, and the like.

Abstract: An apparatus for managing a data backup is disclosed. In accordance with the apparatus of the present invention, an integrity verification data randomly extracted according to a predetermined condition is used to facilitate a checking of an error that may exist in a backup data, and extracting and locating the integrity verification data are facilitated by using an index data, thereby minimizing a work time for verifying an integrity of the backup data.

Abstract: A sterilizing apparatus is inserted into a cold or warm water passage of a water dispenser, a purified water passage of a water purifier, a discharge pipe of a beverage bending machine, an air suction unit of an air conditioner and so on to inject a high pressure steam for sterilization. The sterilizing apparatus using a high pressure steam includes an injection member for controlling a high pressure steam to be selectively injected; a rotating unit having a hollow perforated in a length direction of the rotating unit so that the steam injected from the injection member passes through the hollow, a rotating means being installed in the hollow to be rotated by the passing steam; and a nozzle unit coupled to the rotating means to rotate together with the rotating means, and having a rod-shaped nozzle for injecting the steam.

Abstract: A receiver performing an adaptive overlap and add (OLA) function in a multi band orthogonal frequency division multiplexing (OFDM) scheme and a method using the receiver. The receiver performing the OLA function in the multi band OFDM includes a channel estimator to estimate a delay spread from a digital input signal; a signal-to-noise ratio (SNR) estimator to estimate an SNR from the digital input signal; and an overlap and add (OLA) module to determine an OLA length based on the estimated delay spread and the estimated SNR and to perform an OLA according to the determined OLA length, wherein the OLA module adds, to header samples of an OFDM symbol, tail samples corresponding to the estimated delay spread of the OFDM symbol corresponding to the digital input signal.

Abstract: A fuel cell system including a fuel processor, and a method of operating the fuel cell system, the fuel cell system includes: a reformer that reforms a hydrocarbon group fuel source into a reformed gas; a burner that heats the reformer; a CO remover unit that removes CO from a reformed gas generated by the reformer; a stack to generate electricity using the reformed gas; a first burner fuel supply line to supply the hydrocarbon group fuel source to the burner; and a second burner fuel supply line to supply the reformed gas from the CO remover unit to the burner.

Abstract: The present invention relates to electromagnetically-countered speaker systems for generating acoustic sounds according to dynamic signals supplied thereto while minimizing irradiation of harmful electromagnetic waves therefrom. More particularly, the present invention relates to various speaker systems which do not include speaker magnets but include driver members for generating the sounds while emitting such harmful waves and counter members for generating magnetic forces for providing such sound while emitting counter electromagnetic waves capable of canceling at least a substantial portion of the harmful waves based on their configurational and phase characteristics. The present invention also relates to various speaker systems which do not include speaker magnets but include various electric and/or magnetic shields in addition to such drive and counter members.

Abstract: An intramedullary bone device comprises a distal outer member, a proximal outer member for positioning in substantial axial alignment with the distal outer member, the distal and proximal outer members each having at least one opening in a wall thereof. The distal outer member and the proximal outer member each have a passage therein. The device also has a distal inner member sized to be slideably received within the passage of the distal outer member and a proximal inner member sized to be slideably received within the passage of the proximal outer member. An extender/retractor is able to selectively extend or retract to selectively lengthen or shorten, respectively, the device. The device has pins movable between a retracted position and an extended position, wherein the pins extend through the at least one opening in the distal and proximal outer members to fix the device to a bone during use.

Abstract: The present invention relates to an electromagnetically-countered display system including at least one wave source and at least one counter unit, where such a wave source irradiates harmful electromagnetic waves and the counter unit emits counter electromagnetic waves for countering the harmful waves therewith. More particularly, the present invention relates to various counter units for the electromagnetically-countered display system and to various mechanisms to counter the harmful waves with the counter units, e.g., by matching configurations of the counter units with those of the wave sources, by matching wavefronts of the harmful waves with those the counter waves, and so on. The present invention also relates to various methods of countering the harmful waves with such counter waves by source and/or wave matchings, various methods of providing the counter units for emitting the counter waves defining desired wave characteristics, and the like.

Abstract: The method for correcting the eccentricity of a vehicle wheel in balancing machines or the like, comprises: a reading phase for reading the radial eccentricity deviation of the rim of a wheel to be balanced and the radial eccentricity deviation of the tire of the wheel, read at a plurality of predetermined angular positions along the entire outer perimeter of the rim and of the tire; a processing phase of the total radial eccentricity deviation values of the wheel, starting with the radial eccentricity deviations of the rim and of the tire read and according to the angular coupling positions between the rim and the tire; a definition phase for defining a geometric irregularity index of the wheel, determined according to the total radial eccentricity deviation values of the wheel and according to the angular coupling position between the rim and the tire; a determination phase for determining an optimal coupling angular position between the tire and the rim, selected among all the possible angular coupling pos

Abstract: A method for linearizing a radiation detector is provided, the method including measuring a pulse height spectrum of a predetermined radiation source, identifying at least one spectrum template for the predetermined radiation source, and determining a linearization function by comparing the measured pulse height spectrum with the at least one identified spectrum template. The at least one spectrum template is a predefined synthesized energy spectrum for the predetermined radiation source and for the corresponding radiation detector. Further, a detector for measuring one or more types of radiation is provided, the detector being adapted for transforming the measured pulse height spectrum in an energy-calibrated spectrum, the transformation including a linearization step, where a linearization function used with the linearization step is determined according to the inventive method.

Abstract: A vehicle cowl structure is provided. A cowl part is disposed between a lower end of a front glass of a vehicle and a rear end of a front hood. The cowl part has a two-layer structure which has a metallic cowl panel having a design surface and a resinous cowl cover disposed below the metallic cowl panel.

Abstract: A method of fabricating a plurality of freestanding GaN wafers includes mounting a GaN substrate in a reactor, forming a GaN crystal growth layer on the GaN substrate through crystal growth, performing surface processing of the GaN crystal growth layer to form a GaN porous layer having a predetermined thickness on the GaN crystal growth layer, repeating the forming of the GaN crystal growth layer and the forming of the GaN porous layer a plurality of times to form a stack of alternating GaN crystal growth layers and GaN porous layers on the GaN substrate, and cooling the stack such that the GaN layers self-separate to form the freestanding GaN wafers. The entire process of forming a GaN porous layer and a thick GaN layer is performed in-situ in a single reactor. The method is very simplified compared to the prior art. In this way, the entire process is performed in one chamber, and in particular, GaN surface processing and growth proceed using an HVPE process gas such that costs are greatly reduced.

Abstract: A power conditioner includes a main converter to transform a voltage outputted from a power source into a first transformed voltage and output the first transformed voltage to supply power to a power using point; and an auxiliary converter to transform the first transformed voltage outputted from the main converter into a second transformed voltage and output the second transformed voltage to supply power to balance-of-plant (BOP) elements including driving devices of the power source. The main converter includes a first winding to transform the voltage outputted from the power source into the first transformed voltage and output the first transformed voltage to supply power to the power using point; and a second winding to transform the voltage outputted from the power source into a third transformed voltage and output the third transformed voltage to supply power directly to the BOP elements, thereby bypassing the auxiliary converter.

Abstract: A semiconductive porcelain composition/electrode assembly which is low in room temperature resistivity of 100 ?·cm or less and is reduced in change with the passage of time due to energization with regard to the semiconductive porcelain composition in which a part of Ba of BaTiO3 is substituted with Bi—Na and which has a P-type semiconductive component at a crystal grain boundary. Also, there is a process for producing a semiconductive porcelain composition/electrode assembly wherein an electrode is joined to a semiconductive porcelain composition in which a part of Ba of BaTiO3 is substituted with Bi—Na and which has a P-type semiconductive component at a crystal grain boundary, the process including joining the electrode to the semiconductive porcelain composition, followed by conducting a heat treatment at a temperature of from 100° C. to 600° C. for 0.5 hour to 24 hours.

Abstract: It is intended to provide a semiconductor ceramic composition in which a part of Ba in BaTiO3 is substituted with Bi—Na, which is capable of restraining the evaporation of Bi in the calcination step, is capable of restraining the compositional deviation of Bi—Na thereby suppressing the formation of different phases, is capable of further reducing the resistivity at room temperature, and is capable of restraining the fluctuation of the Curie temperature; and to provide a production process of the same.

Abstract: A fuel cell power management system and an anti-islanding method using the power management system. The power management system includes a fuel cell to generate direct current (DC) power, a power conditioning system (PCS) to generate alternating current (AC) power from the DC power generated by the fuel cell, a power grid that is connected to the PCS, a detector to detect a change in the AC power flowing from an output line of the PCS, and a controller to control the connection between the PCS and the power grid, according to the result of the detection.

Abstract: A method and system analyzes the state of security of a web application based on the structure of its components and its behavior against a well determined set of fingerprints. The system searches for components while parsing the web application, applying the well determined procedures to identify the server side technologies involved. Based on information stored in memory, the system elaborates a set of security checks to determine any vulnerabilities.

Abstract: A device for non-invasive measurement of the internal temperature of a physical body or thermal resistivity, the body comprising a thermally conductive medium between an internal region with a substantially constant internal temperature and an external surface with a surface temperature. The device comprises: a patch comprising one or more contact components for attachment to the external surface and an insulating cover for substantially thermally insulating the contact component from ambient thermal conditions; a reader for acquiring one or more thermal magnitudes on the patch; a processing unit for processing the thermal magnitudes to derive the internal temperature of the internal region or the thermal resistivity of the conductive medium.

Abstract: A positive pressure one way medical valve contains an inlet (10), outlet (11), an internal flow path between the inlet and the outlet and a plunger (12) movable between a retraced sealing position, where backflow is reduced or prevented and an extended open position, where fluid can flow from the inlet to the outlet. The plunger is moved from the retraced to the extended position by insertion of a tip onto the inlet (10). A variable volume chamber (23) is defined partially by an elastomeric member (14) that is stretched, when plunger is in the extended position and reduced, when the plunger is in the retraced position so to increase or decrease the volume of the chamber respectively. A valve (50), which is movable between open and closed positions by the presence or absence of fluid passing through the inlet, immediately seals the flow pathway before the plunger is retraced.