Abstract: An electrode assembly, a battery, a battery pack and a vehicle are provided. In the electrode assembly, a first electrode, a second electrode, and a separator interposed therebetween are wound based on a winding axis to define a core and an outer circumference, the first electrode includes a first active material portion coated with an active material layer along a winding direction and a first uncoated portion not coated with an active material layer, the first uncoated portion includes a plurality of independently bendable segments, a cut groove is interposed between adjacent segments along the winding direction, and a lower portion of the cut groove has a round portion.

Abstract: A photoacid generator represented by Formula 1 or Formula 2: wherein R1, R2, and R3 are each independently a C1-C10 alkyl group, X is a C3-C20 alicyclic hydrocarbon group forming a ring with S+, and at least one CH2 group in the alicyclic hydrocarbon group may be replaced with at least one selected from the group consisting of S, O, NH, a carbonyl group, and R5—S+A?, where R5 is a C1-C10 alkyl group, and A? is a counter-ion.

Abstract: A photoacid generator represented by Formula 1 or Formula 2: wherein R1, R2, and R3 are each independently a C1-C10 alkyl group, X is a C3-C20 alicyclic hydrocarbon group forming a ring with S+, and at least one CH2 group in the alicyclic hydrocarbon group may be replaced with at least one selected from the group consisting of S, O, NH, a carbonyl group, and R5—S+A?, where R5 is a C1-C10 alkyl group, and A? is a counter-ion.

Abstract: In an inverter controller for a brushless DC motor, when the upper and lower pole power switching devices are sequentially operated, a commutating signal is applied so that a commutated power switching device is always turned on, and a pulse width modulated commutating signal is applied to the non-commutated power switching. device, and thereby a driving efficiency of the brushless DC motor can be effectively enhanced by reducing a delay time of a free-wheeling current at the turn off section of the pulse width modulated commutating signal and further, a thermal balance of the power switching devices can be realized by the uniform PWM control of the power switching devices connected to the upper and lower poles to gain an effect of uniformly distributing a thermal stress applied to a specific power switching device.

Abstract: A rock fragmentation system using Gold Schmidt method and process for blasting using the machine are provided, wherein the blasting machine has a capacitor bank, a switch, a high voltage electric power supply, a first charge dump and a second charge dump, and an electrode assembly which is connected to capacitor bank and switch with a coxial cable and electrodes at a lower end of the electrode assembly, wherein an aluminum and metal oxide composition of a predetermined mixture ratio is inserted between electrodes in a lower end of the electrode assembly for generating an instant reaction energy by discharging the electric energy.

Abstract: A method of supporting Hybrid Automatic Repeat Request (HARQ) includes receiving an initial uplink grant on a downlink channel, transmitting uplink data on an uplink channel using the initial uplink grant, receiving a request for retransmission of the uplink data, determining at least one transmission parameter of a channel quality indicator (CQI) from the initial uplink grant, multiplexing retransmission data of the uplink data with the CQI, and transmitting the multiplexed data on the uplink channel. Amount of resources for transmission of the CQI is determined based on the at least one transmission parameter.