摘要:
A base station is capable of transmitting a signal in a wireless communication network. The base station decides channel state information matrices of respective channels by determining a state of the channels corresponding to respective transmission antennas. The base station calculates transmission beam forming vectors for the respective transmission antennas by a combination of a dot product and a cross product of the channel state information matrices. Thereafter, the base station beam-forms signals for the respective transmission antennas by using the respective transmission beam forming vectors, and transmitting the beam-formed signals.
摘要:
The present invention provides a hydrogen supply system for a fuel cell which can compensate for a change in temperature, caused by heat generated when a high pressure tank is charged and discharged with hydrogen, using a metal hydride (MH) tank providing high hydrogen storage density, mounted in the high pressure tank such that hydrogen is to be discharged from the MH tank when hydrogen is charged to the high pressure tank, and hydrogen is to be charged to the MH tank when hydrogen is discharged from the high pressure tank.For this, the present invention provides a hydrogen supply system for a fuel cell, including: a high pressure tank which is capable of storing hydrogen received from a hydrogen refueling station and includes a metal hydride (MH) tank capable of storing hydrogen, mounted therein; first and second solenoid valves provided at both ends of the high pressure tank; a buffer tank connected in parallel to the high pressure tank; and a fuel cell stack connected to the buffer tank so that hydrogen from the high pressure tank or the MH tank is supplied to the stack through the buffer tank, wherein the hydrogen is charged from the hydrogen refueling station to the high pressure tank and discharged from the high pressure tank through the first solenoid valve, the hydrogen is charged and discharged to and from the MH tank through the second solenoid valve, the hydrogen is discharged from the MH tank as the first and second solenoid valves are simultaneously opened when the hydrogen is charged to the high pressure tank, and the hydrogen discharged from the MH tank is stored in the buffer tank and then supplied to the fuel cell stack.
摘要:
The present invention relates to an apparatus for processing an ultrasound image of a target object including a periodically moving object, including: an ROI setting unit for setting regions of interest (ROIs) to each of frames constituting ultrasound volume data acquired from a target object; a VOI setting unit for selecting a predetermined number of first reference frames from the ultrasound volume data and setting a predetermined number of volumes of interest (VOIs) by combining ROIs of the first reference frames with ROIs of frames adjacent to the reference frames; a motion compensating unit for processing the VOIs to compensate a motion of the target object; a correlation coefficient curve calculating unit for calculating a correlation coefficient curve for a predetermined interval at each VOI; a period setting unit for setting a moving period of the moving object based on the correlation coefficient curve in the volume data; and an ultrasound volume data reconstructing unit for reconstructing the ultrasound volume data based on the moving period.
摘要:
The present invention provides a hydrogen supply system including a plurality of hydrogen tanks, in which an in-tank regulator is mounted only on one hydrogen tank and a solenoid valve is mounted on each of the other hydrogen tanks so that a reduction in manufacturing cost is realized and hydrogen is stably supplied to a fuel cell stack by controlling the solenoid valves during driving, and a method for controlling the same.
摘要:
An apparatus for manufacturing molten iron includes i) at least one fluidized-bed reduction reactor that reduces and plasticizes iron ore and converts the iron ore into reduced materials, ii) a melter-gasifier into which the reduced ore is charged and oxygen is injected, the melter-gasifier manufacturing molten iron, and iii) a reducing gas supply line that supplies a reducing gas discharged from the melter-gasifier to the fluidized-bed reduction reactor. The fluidized-bed reduction reactor includes a cyclone that is installed in the fluidized-bed reduction reactor to collect fine iron ore. A gas injector, which prevents the fine ore from adhering by injecting gas containing carbon, is connected to the cyclone.
摘要:
A plasma display panel is provided that reduces reflective brightness and increases the black area. The plasma display panel includes: a front substrate and a rear substrate facing each other at a distance; an address electrode which is formed on the rear substrate and extends in a first direction; a display electrode which is formed on the front substrate and extends in a second direction crossing the first direction; a barrier rib which is disposed between the front and rear substrates to define a plurality of discharge cells; and a phosphor layer which is formed on each of the discharge cells, wherein the display electrode comprises: a transparent electrode which has a curved portion on a second surface that is an opposite surface of a first surface facing the front substrate; and a bus electrode which is attached to the second surface of the transparent electrode where the curved portion is formed.
摘要:
A method for fabricating a liquid crystal display (LCD) device comprises forming an active pattern and a data line on a substrate, the active pattern including a source, a drain, and a channel regions; a first insulation film on a portion of the substrate; forming a gate electrode in a portion of the active pattern where the first insulation film is formed; a second insulation film on the substrate; forming a plurality of first contact holes exposing a portion of the source and drain regions and a second contact hole exposing a portion of the data line; forming a source electrode from a transparent conductive material connected to a source region within the respective first contact hole and a data line within the second contact hole; and forming a pixel and a drain electrodes from the transparent conductive material connected to a drain region within the respective first contact hole.
摘要:
There is provided an ultrasound imaging system, which includes: an ultrasound diagnostic unit for providing 3D volume data of an object and its neighboring region, wherein the 3D volume data is formed with a number of frames; a pre-processing unit for selecting a predetermined number of key frames from the frames; a segmentation unit for segmenting each of the key frames into object regions and non-object regions; a texture-based region classifying and merging unit for classifying the object and the non-object regions into object and non-object sub-regions based on the texture thereof, and removing the non-object sub-regions and merging the object sub-regions; a surface determining unit for extracting contours of the object in the key frames and determining a 3D surface of the object by connecting the contours; and a rendering unit for forming masked volume with the 3D surface and forming a 3D ultrasound image of the object by rendering the masked volume.
摘要:
A method of fabricating a liquid crystal display device includes forming an active pattern and a data line on a substrate, forming a first insulating layer on the data line, forming a second insulating layer on the substrate, forming a gate electrode on the second insulating layer above the active pattern, forming a third insulating layer on the substrate, forming first and second contact holes through the second and third insulating layers to expose first and second portions of the active pattern, and forming a third contact hole through the first, second, and third insulating layers exposing a portion of the data line, respectively, and forming source and drain electrodes on the third insulating layer, the source electrode connected to the first exposed portion of the active pattern through the first contact hole and connected to the first exposed portion of the data line through the third contact hole, and the drain electrode connected to the second exposed portion of the active pattern through the second contact hole.