Abstract: A bearing steel has improved insulation performance by forming a continuous insulating film. The bearing steel includes 0.65 to 1.0 mass % of carbon (C), 1.6 to 2.0 mass % of chromium (Cr), 1.5 to 3.0 mass % of aluminum (Al), 0.8 to 1.2 mass % of manganese (Mn), 0.7 to 1.0 mass % of silicon (Si), 0.1 to 0.3 mass % of nickel (Ni), 0.08 to 0.12 mass % of molybdenum (Mo), and a balance of iron (Fe), in which an oxynitride layer including a nitride layer and an oxide layer is formed on the surface of a material.

Abstract: A ceiling storage system includes a first support rail and a second support rail that extend in a first direction; a first driving rail that extends in the first direction and is parallel to the first support rail and the second support rail; a second driving rail movably coupled to the first support rail, the second support rail, and the first driving rail, where the second driving rail is configured to move along the first support rail, the second support rail, and the first driving rail; a transfer vehicle movably coupled to the second driving rail and configured to move along the second driving rail; and a connection device that connects the first driving rail and the second driving rail to each other, where the connection device and the second driving rail are rotatable around a first axis that is parallel to the first direction.

Abstract: An energy management system and a method of operation thereof are provided. The energy management system includes a receiver that receives power amount information indicating an amount of power generated by a first new and renewable energy power plant, an amount of power stored in a first energy storage device for the first new and renewable energy power plant, an amount of power generated by a second new and renewable energy power plant, and an amount of power stored in a second energy storage device for the second new and renewable energy power plant and a controller that determines an operation mode for each of the first energy storage device and the second energy storage device based on the received power amount information.

Abstract: The present disclosure relates to a plurality of host materials comprising at least one first host compound represented by Formula 1 and at least one second host compound represented by Formula 3 different from the first host compound, and an organic electroluminescent device comprising the same. By comprising a specific combination of compounds according to the present disclosure as host materials, an organic electroluminescent device having low driving voltage, high luminous efficiency, and/or significantly improved lifespan characteristic, can be provided.

Abstract: An energy management system and a method of operation thereof are provided. The energy management system includes a receiver that receives power amount information indicating an amount of power generated by a first new and renewable energy power plant, an amount of power stored in a first energy storage device for the first new and renewable energy power plant, an amount of power generated by a second new and renewable energy power plant, and an amount of power stored in a second energy storage device for the second new and renewable energy power plant and a controller that determines an operation mode for each of the first energy storage device and the second energy storage device based on the received power amount information.

Abstract: Disclosed herein is a method for key-value caching. The method may include initializing a key-value cache and processing data in the order of a key-value store, a service, and the key-value cache.

Abstract: A composite polishing pad for chemical mechanical polishing (CMP) and a method for producing the composite CMP. The composite polishing pad for CMP contains a polymer substrate layer including a plurality of protrusions formed on the upper surface thereof; and a carbon nanotube layer including carbon nanotubes embedded in and fixed to the upper portion of the substrate layer.

Abstract: An energy storage system includes an energy storage device that stores energy generated from a new and renewable energy power plant, a power management device that monitors a total amount of power produced by at least one new and renewable energy power plant in a plurality of regions, determines an operation mode of the energy storage device based on a result of monitoring a reference capacity of an integrated line through which power of the plurality of regions is transmitted and a result of monitoring the total power amount, and controls a power capacity flowing through the integrated line according to the operation mode, and a power conversion device that receives a command corresponding to the operation mode from the power management device and controls an operation of the energy storage device according to the command.

Abstract: A display device includes display panels; a frame supporting the display panels; a first magnetic body disposed on the frame; and a second magnetic body disposed on at least a part of the display panels, wherein the first magnetic body and the second magnetic body overlap each other in a direction parallel to a surface of the display panels and a direction perpendicular to the surface of the display panels.

Abstract: A display device includes a substrate, pixels on the substrate, pads, and test lines. The pads are between the pixels and an edge of the substrate and include a first pad and a second pad. The test lines include a first test line and a second test line. The first test line includes a first section and a second section. The second section is closer to the edge of the substrate than the first section and is connected through the first section to the first pad. The second test line includes a first segment and a second segment. The second segment is closer to the edge of the substrate than the first segment and is connected through the first segment to the second pad. A minimum distance between the first section and the first segment is larger than a minimum distance between the second section and the second segment.

Abstract: A display device and a tiled display including the same are provided. The display device includes a bottom plate, and a display panel including an active area on the bottom plate and including a plurality of pixels, and a plurality of dummy areas near the active area and including a plurality of dummy pixels, wherein the plurality of dummy pixels is on at least one side surface of the bottom plate, wherein the plurality of pixels includes a first sub-pixel, a second sub-pixel, and a third sub-pixel configured to emit lights of different colors, and wherein the plurality of dummy pixels is configured to emit light of a same color as one of the first sub-pixel, the second sub-pixel, and the third sub-pixel.

Abstract: A radiator-intercooler integrated module and a vehicle including the same are provided. The radiator-intercooler integrated module includes a low-temperature radiator and a water cooled intercooler of the vehicle which are integrated into a single body.

Abstract: A display device and a tiled display device are provided. The display device includes a substrate having a first side, which extends in a first direction, and a second side, which extends in a second direction that intersects the first direction, a first alignment vernier mark disposed on the substrate, the first alignment vernier mark adjoining the first side and extending in the second direction, and a second alignment vernier mark disposed on the substrate, the second alignment vernier mark adjoining the second side and extending in the first direction.

Abstract: A display device includes display panels; a frame supporting the display panels; a first magnetic body disposed on the frame; and a second magnetic body disposed on at least a part of the display panels, wherein the first magnetic body and the second magnetic body overlap each other in a direction parallel to a surface of the display panels and a direction perpendicular to the surface of the display panels.

Abstract: A display device includes: a first substrate that includes a plurality of first pads arranged in a first direction and a plurality of second pads arranged in parallel with the plurality of first pads; a second substrate that overlaps the first substrate and includes a second substrate including one edge exposing the plurality of first pads and the plurality of second pads; a first flexible printed circuit board that is electrically connected with the plurality of first pads; a second flexible printed circuit board that overlaps the first flexible printed circuit board and is electrically connected with the plurality of second pads; a protective layer that covers the first flexible printed circuit board and the second flexible printed circuit board from one edge of the second substrate to a width including the plurality of first pads and the plurality of second pads; and a blocking portion disposed on the first substrate at a distance from one edge of the second substrate by a width of the protective layer and

Abstract: An electric oil pump system integrated with a heat exchanger capable of reducing installation space and cost may include: an the electric oil pump including a motor and a pumping part operated by power of the motor to suck and send oil under pressurizing to an oil-used part; and a heat exchanger to exchange heat between the pressurized oil sent by the electric oil pump and coolant cooled at a radiator while the coolant and the pressurized oil pass through the heat exchanger. In particular, the heat exchanger is directly coupled to the electric oil pump and the oil-used part, respectively, and integrated with each other.

Abstract: A motor apparatus having an oil circulation structure may collect churning oil inside a housing and efficiently disperses the collected oil in each drive system, smoothly performing cooling and lubrication of the drive system including a motor and a reduction gear. Furthermore, even under low or high load conditions of the drive system, the oil level inside the housing is maintained at a constant level to maintain desired lubrication and cooling performance.

Abstract: An electric oil pump system allows the cooling of an electric oil pump (EOP) and an oil pump controller (OPU) to be performed efficiently in the vehicle equipped with the electric oil pump. An electric oil pump of the system includes a pumping part that is operated by power of a motor to suction and direct pressurized oil. An oil pump controller operates the electric oil pump. A water-cooled cooling apparatus cools the oil pump controller using coolant and an oil-cooled cooling apparatus cools the electric oil pump using oil. The coolant of the water-cooled cooling apparatus and the oil of the oil-cooled cooling apparatus pass through a heat exchanger and as the coolant and oil pass therethrough, heat exchange is achieved.

Abstract: A motor apparatus having an oil circulation structure may collect churning oil inside a housing and efficiently disperses the collected oil in each drive system, smoothly performing cooling and lubrication of the drive system including a motor and a reduction gear. Furthermore, even under low or high load conditions of the drive system, the oil level inside the housing is maintained at a constant level to maintain desired lubrication and cooling performance.

Abstract: An exhaust gas recirculation (EGR) cooler assembly can be used to perform heat exchange between cooling water and exhaust gas. The EGR cooler assembly includes an EGR cooler in which cooling water flows, and a diesel particulate filter (DPF) including a housing accommodating therein the EGR cooler and a filter unit for post-treatment of the exhaust gas. An inside of the housing is sectioned by a partition into a first space in which the EGR cooler is inserted and a second space in contact with the filter unit, and the partition has a flow hole formed thereon in order to allow the exhaust gas to flow to the EGR cooler.