摘要:
Disclosed are a polymer electrolyte membrane for fuel cells and a membrane electrode assembly and fuel cell including the same. The polymer electrolyte membrane includes a fluorine-based cation exchange resin having proton conductivity and fibrous nanoparticles having a hydrophilic group. By using the fluorine-based cation exchange resin having proton conductivity and the fibrous nanoparticles having a hydrophilic group in combination, performance of a fuel cell including the polymer electrolyte membrane is not deteriorated and the polymer electrolyte membrane prevents gases from permeating thereinto and has enhanced durability for extended use. A fuel cell including the above-described polymer electrolyte membrane is provided.
摘要:
Embodiments of the subject invention relate to a method and apparatus for providing a apparatus that can function as a photovoltaic cell, for example during the day, and can provide solid state lighting, for example at night. The apparatus can therefore function as a lighting window. An embodiment can integrate an at least partially transparent one-side emitting OLED and a photovoltaic cell. The photovoltaic cell can be sensitive to infrared light, for example light having a wavelength greater than 1 μm. The apparatus can be arranged such that the one direction in which the OLED emits is toward the inside of a building or other structure and not out into the environment.
摘要:
An apparatus and method of improving the quality of a speech codec are provided. In the method, a first energy of a signal decoded by a low-band codec is calculated, and a second energy of a signal decoded by a low-band enhancement mode is calculated. Then, when the first energy is less than a first threshold value or less than a product of the second energy and a second threshold value, a size of the decoded signal is scaled. Accordingly, generation of a quantization error with respect to a silence segment is reduced.
摘要:
The present disclosure relates to a semiconductor device and a method of operating the semiconductor device, and particularly to a semiconductor memory device including a memory cell array and a method of operating the semiconductor memory device. The memory device includes a memory cell array including a plurality of memory cells; and a peripheral circuit configured to program a selected memory cell into a target program state, wherein the peripheral circuit performs a program operation by applying a bit line voltage determined according to the threshold voltage to a bit line of the selected memory cell when a threshold voltage of the selected memory cell is higher than a first verification voltage and is lower than a second verification voltage.
摘要:
A method and device for determining an output of a visible frame in at Visible Light Communication (VLC) device are provided. A first VLC device determines whether to permit a second VLC device to generate visible frames, and transmits, to the second VLC device, visible frame information indicating whether the second VLC device is permitted to generate the visible frames.
摘要:
A conductive film composition for forming a conductive film in a single coating layer on one or both sides of a base film, the composition including a metal nanowire, and polyfunctional monomers.
摘要:
A lesion diagnosis apparatus and method to determine a regularity of a shape of a lesion are provided. The lesion diagnosis apparatus to determine a regularity of a shape of a lesion, includes a lesion area detecting unit configured to form a lesion area by selecting virtual points along a boundary of a lesion included in an image, and a lesion diagnosing unit configured to determine the regularity of the shape of the lesion by analyzing a correlation of the selected virtual points.
摘要:
Embodiments of the invention are directed to IR photodetectors with gain resulting from the positioning of a charge multiplication layer (CML) between the cathode and the IR sensitizing layer of the photodetector, where accumulating charge at the CML reduces the energy difference between the cathode and the CML to promote injection of electrons that result in gain for an electron only device. Other embodiments of the invention are directed to inclusion of the IR photodetectors with gain into an IR-to-visible up-conversion device that can be used in night vision and other applications.
摘要:
Photodetectors, methods of fabricating the same, and methods using the same to detect radiation are described. A photodetector can include a first electrode, a light sensitizing layer, an electron blocking/tunneling layer, and a second electrode. Infrared-to-visible upconversion devices, methods of fabricating the same, and methods using the same to detect radiation are also described. An Infrared-to-visible upconversion device can include a photodetector and an OLED coupled to the photodetector.
摘要:
A method and apparatus for supporting mobility of a mobile terminal in a Visible Light Communication (VLC) system. The method includes searching, by the VLC device, for a first mobile terminal in a plurality of cells; locating the first mobile terminal in a first cell among the plurality of cells; exchanging data with the first mobile using a light source of the first cell; determining whether a response signal corresponding to data reception is received from the first mobile terminal in the first cell; searching for the first mobile terminal in a neighboring cell of the first cell, if the response signal is not received; and determining the neighboring cell as a second cell for visible light activation, if the first mobile terminal is located in the neighboring cell.