Abstract: A power metering apparatus, a power metering server, and a power metering method based on a blockchain are disclosed. Particularly, in order to simultaneously assure integrity and transparency of power metering data based on a blockchain, power metering data generated by measuring an amount of power generated by an energy source and a unique key are stored in a database linked to a power metering server, and a digitally signed hash value of the power metering data is stored in a blockchain node. Accordingly, disclosed are blockchain-based power metering system and method for preventing forgery and tampering of power metering data, solving a problem associated with a blockchain storage capacity that may occur when storing the power metering data, and protecting sensitive information on the power metering data.

Abstract: The present invention relates to an foreign matter removal device, and more particularly, to an foreign matter removal device, in which a length of a main body portion is increased to correspond to a size of a large-scale cell for a vehicle, and a plurality of suction channels each having a swoosh shape is provided, thereby efficiently removing foreign substances produced during a process of manufacturing a cell for a vehicle.

Abstract: A method for preparing a lithium cobalt-based positive electrode active material and a positive electrode active material prepared by the method are provided. The method includes dry-mixing and then heat treating a lithium cobalt oxide particle represented by Formula 1 and one or more lithium metal oxide particle selected from the group consisting of lithium aluminum oxide, lithium zirconium oxide, and lithium titanium oxide.

Abstract: A lithium secondary battery and a method of manufacturing the lithium secondary battery are provided. In the lithium secondary battery, a positive electrode additive represented by Formula 1 as an irreversible additive is included in a positive electrode mixture layer, and a ratio (CC/DC) of an initial charge capacity (CC) to an initial discharge capacity (DC) is adjusted within a specific range, thereby reducing the amount of oxygen gas generated in the charging/discharging of the lithium secondary battery, and at the same time, inhibiting self-discharging and improving an operating voltage by improving the open circuit voltage of the battery in initial activation and/or subsequent high-temperature storage. The lithium secondary battery including the same can be effectively used as a power source for mid-to-large devices such as electric vehicles.

Abstract: Provided is a method for providing an edit service of a document, performed by at least one processor. The method includes storing, in a first data queue, first edit data received from a first communication terminal; storing, in the first data queue, second edit data received from a second communication terminal; updating an online document by reflecting the first edit data and the second edit data stored in the first data queue in the online document; transmitting the first edit data to the second communication terminal; and transmitting the second edit data to the first communication terminal.

Abstract: Aspects of the subject disclosure may include, for example, a light-emitting diode (LED) driver configured to generate an LED driving current based on an input signal. The LED driver includes a code generator configured to generate code such that the LED driving current includes a direct current component corresponding to an upper n-bit of the input signal and an alternating current component alternating according to a lower m-bit of the input signal, and a current generator configured to generate the LED driving current, based on the code. Other embodiments are disclosed.

Abstract: A semiconductor device including a substrate including an active pattern; a gate electrode crossing the active pattern and extending in a first direction; a source/drain pattern on the active pattern and adjacent to a side of the gate electrode; and an active contact in a contact hole on the source/drain pattern, wherein the active contact includes a first contact in a lower region of the contact hole, the first contact including a barrier pattern and a conductive pattern; a diffusion barrier layer on the first contact; and a second contact on the diffusion barrier layer, and a top surface of the diffusion barrier layer is coplanar with a top surface of the barrier pattern of the first contact.

Abstract: The present technology provides a positive electrode for a lithium secondary battery and a lithium secondary battery including the same. In the positive electrode, a positive electrode additive represented by Formula 1 is contained in a positive electrode mixture layer, and specific X-ray diffraction (XRD) and/or extended X-ray absorption fine-structure (EXAFS) peak(s) are controlled for cobalt remaining in the positive electrode mixture layer after initial charging to SOC 100% to have a specific oxidation number, thereby reducing side reactions caused by the irreversible additive, that is, the positive electrode additive, and reducing the amount of gas such as oxygen generated during charging/discharging. Therefore, the lithium secondary battery has an excellent effect of improving battery safety and electrical performance.

Abstract: A method and apparatus for triggering fallback using RRC establishment cause in a communications system is disclosed herein. An aspect of the present disclosure provides a base station of a first wireless communication system for triggering fallback from the first wireless communication system to a second wireless communication system, the base station including: a receiving unit configured to receive an RRC connection request message from user equipment and check whether or not the user equipment requests a call service using the RRC connection request message; and a fallback trigger unit configured to trigger the fallback to the second wireless communication system when the user equipment requests the call service.

Abstract: An electronic device including: a reference voltage generator circuit to generate a reference voltage based on a first and second voltage, the reference voltage generator circuit including: a first current source to supply a first current to each of a first and second node; an amplifier to amplify a difference between the first voltage of the first node and the second voltage of the second node and to output a difference voltage corresponding to the amplified difference; a first bipolar junction transistor (BJT) connected to the first node; a first resistor connected to the second node; a second BJT connected between the first resistor and ground; a second resistor connected between the second node and ground; and a first transistor to be supplied with a second current from the first current source; and an adaptive cascode circuit to generate a bias voltage applied to a gate of the first transistor.

Abstract: A positive electrode active material includes a lithium transition metal oxide, which is doped with doping element M2, wherein M2 is at least one selected from the group consisting of Al, Ti, Mg, Zr, W, Y, Sr, Co, F, Si, Na, Cu, Fe, Ca, S, and B, and contains nickel in an amount of 60 mol % or more based on a total number of moles of transition metals excluding lithium, wherein the lithium transition metal oxide has a single particle form, and includes a center portion having a layered structure and a surface portion having a rock-salt structure, and the doping element M2 is included in an amount of 3,580 ppm to 7,620 ppm based on a total weight of the positive electrode active material.

Abstract: A display device includes first and second gate lines extending in a first direction; first and second data lines extending in a second direction and crossing the first and second gate lines; and a first horizontal pixel row including first, second, and third sub-pixels sequentially arranged in the first direction, wherein the first sub-pixel is connected to the first gate line and the first data line, the second sub-pixel is connected to the second gate line and the first data line, and the third sub-pixel is connected to the first gate line and the second data line.

Abstract: A light-emitting diode (LED) driver configured to generate an LED driving current based on an input signal may include a terminal exposed to outside, a controller configured to identify a first identifier and data from the input signal, identify a second identifier based on a signal applied to the terminal, and when the first identifier and the second identifier are identical to each other, generate a control signal based on the data. The LED driver further may further include a current source configured to generate the LED driving current based on the control signal.

Abstract: A chip on film package includes: a flexible base film having a first surface and a second surface opposite to each other, and having a chip mounting region on the first surface; a plurality of wirings extending in a first direction toward the chip mounting region; a semiconductor chip mounted in the chip mounting region on the first surface of the base film and electrically connected to the wirings; a pair of first heat dissipation members on the first surface of the base film and spaced apart from the semiconductor chip, and extending in a second direction perpendicular to the first direction; and a second heat dissipation member on the first surface of the base film and covering the semiconductor chip and the pair of first heat dissipation members.

Abstract: A solid state formulation adapted for hydrogen generation includes a mixture of sodium borohydride and a water storage agent that is stable below about 60° C. but adapted to release water upon heating to a temperature between about 80° C. and about 300° C. A method for generating hydrogen by heating that solid state formulation is also provided.

Abstract: A positive electrode active material includes a lithium transition metal oxide, which is doped with doping element M2, wherein M2 includes at least one of Al, Ti, Mg, Zr, W, Y, Sr, Co, F, Si, Na, Cu, Fe, Ca, S, or B, and contains nickel in an amount of 60 mol % or more based on a total number of moles of transition metals excluding lithium, wherein the lithium transition metal oxide has a single particle form, and includes a center portion having a layered structure and a surface portion having a rock-salt structure, and the doping element M2 is included in an amount of 3,580 ppm to 7,620 ppm based on a total weight of the positive electrode active material.

Abstract: Provided are a positive electrode for a lithium secondary battery and a lithium secondary battery containing the same. The positive electrode includes a positive electrode current collector and a positive electrode mixture layer disposed thereon and includes a positive electrode active material, a positive electrode additive represented by Formula 1 (LipCo(1-q)M1qO4), a conductive material, and a binder. Furthermore, Equation 1 (RLCZO/R0) is 1.55 or less, wherein RLCO represents an electrode sheet resistance when the positive electrode additive represented by Formula 1 is contained in the positive electrode mixture layer, and R0 represents an electrode sheet resistance when the positive electrode additive represented by Formula 1 is not contained in the positive electrode mixture layer. The positive electrode is manufactured using a pre-dispersion containing the positive electrode additive in a positive electrode mixture layer as an irreversible additive.

Abstract: A positive electrode material powder including a lithium nickel-based oxide represented by Chemical Formula 1 (LiaNibCocM1dM2eO2) and having a degree of single-particle formation, represented by the following Equation (1), of 0.3 to 0.8: ? i = 1 n 4 ? ? 3 ? R i 3 n × 1 D 50 . In Equation (1), Ri is a radius of the ith grain as measured by subjecting an electrode manufactured using the positive electrode material powder to ion milling and then analyzing the cross section of the electrode by electron backscatter diffraction (EBSD), n is the total number of grains as measured by the EBSD analysis and ranges from 350 to 450, and D50 is a volume-cumulative average particle diameter of the positive electrode material powder as measured using a laser diffraction particle size analyzer.

Abstract: A semiconductor device may include: a flying capacitor connected between a first node and a second node; a first inductor having a first end connected to the flying capacitor through the first node and a second end connected to an output node; and a second inductor having a first end connected to the flying capacitor through the second node and a second end connected to the output node, wherein the semiconductor device is configurable in a plurality of different states based on a plurality of different operational phases, and wherein the flying capacitor is configured to float in a first phase, is configured to be discharged through the first inductor in a second phase that is different from the first phase, and is configured to be charged through the second inductor in a third phase that is different from the first phase and the second phase.

Abstract: A positive electrode active material is disclosed herein. In some embodiments, a positive electrode active material includes a lithium composite transition metal oxide in the form of at least one of single particles or pseudo-single particles, wherein each single particle consists of one nodule, and each pseudo-single particle is a composite of 30 or fewer nodules, wherein the lithium composite transition metal oxide includes Ni, Co, Mn, and Al, wherein a molar ratio of the number of moles of Ni to the total number of moles of all metal elements except lithium is 0.83 to less than 1, a molar ratio of the number of moles of Co to the number of moles of Mn is 0.5 to less than 1, and a molar ratio ratio of the number of moles of Co to the number of moles of Al is 5 to 15.