Abstract: An apparatus for managing a folder, includes: a memory; and a processor electrically connected to the memory. The processor is configured to detect access of a user terminal, provide a folder list for folders or a file list for files in a folder, and when an access authority of the user terminal to a specific folder is confirmed, provide a folder memo pad including a folder memo in a process of providing a folder list and a folder badge associated with the specific folder, wherein the folder memo is realized as a memo pad associated with the specific folder in the user terminal and for which modification is tracked.

Abstract: An approval object-based work management device includes a work note processing unit that creates a work note related to a specific work in the course of a project, a note chat room processing unit that creates a note chat room which is managed as a work object of the project and associated with the work note, an approval object creation unit that creates an approval object for processing an approval work for the work note through the note chat room, and an approval object processing unit that updates an approval status of the approval object according to work progress stages of the approval work and processes the approval work as completed when the last stage of the work progress stages is completed.

Abstract: There is provided an apparatus for managing a group mention based on a user behavior condition by mention type. The apparatus includes: a user-designated mention reception portion that receives a user-designated mention including a user-designated identifier and user-designated information about one or more users forming a user group; an unread count calculation portion that identifies the user-designated identifier, distinguishes the mention type of the user-designated mention, and calculates an unread count of the user-designated mention that has not yet been read by a corresponding user based on the user-designated information; and an unread count processing portion that determines the user behavior condition for subtracting the unread count according to the mention type and determines whether to subtract the unread count by detecting a user behavior associated with the user-designated mention.

Abstract: A file-related task management device includes: a memory; and a processor electrically connected to the memory, wherein the processor creates a file chat room that is associated with a file in a folder shared by one or more folder sharers and is accessible through the file, receives, from a user terminal of the one or more folder sharers, an update log for an update to the file made by the user terminal, and displays a message thread in the file chat room, the message thread including a log message for the update, wherein chat messages related to the file between the one or more folder sharers and the log message are displayed together in the file chat room.

Abstract: An apparatus for managing a folder, includes: a memory; and a processor electrically connected to the memory. The processor is configured to detect access of a user terminal, provide a folder list for folders or a file list for files in the folder, and when an access authority of the user terminal to the folder is confirmed, display some or all of message threads input from chat room participants through a realized folder chat room in association with the folder in the user terminal.

Abstract: The present disclosure relates to a smart-tag based work processing device and a work processing method, wherein the work processing device comprises a work object processing unit creating a work object that implements a work processing flow through a plurality of heterogeneous work units having a dependency relationship; a work processing flow controller creating a work unit of a first type through the work object and sequentially generating a work unit of a second type through the work unit of the first type; and a smart-tag processing unit identifying attribute information of the work unit of the second type when the corresponding work unit is created, automatically generating a smart-tag based on the attribute information, and combining the smart-tag into the work unit of the first type.

Abstract: A cathode active material for a lithium secondary battery according to an embodiment of the present invention includes a lithium-nickel composite metal oxide in which an oxidation number of nickel is 2.8 or more. The lithium-nickel composite metal oxide includes a first doping element having an oxidation number of +2 and a second doping element having an oxidation number of +4. A ratio of a molar ratio of the second doping element relative to a molar ratio of the first doping element is greater than 1 and less than 5.

Abstract: There is provided an apparatus for providing a folder chat room. The apparatus includes a memory and a processor electrically connected to the memory. The processor receives an access to a folder constituting a file system from a folder chat room receiving apparatus, provides a list of files in the folder, provides a folder chat room which at least one of sharers of the folder is participating in and which is created specific to the folder, provides at least a portion of a message thread that can be materialized into the folder chat room in the folder chat room receiving apparatus, and adds a chat message or log message regarding a file object to the message thread associated with the file object and share the message thread through the folder chat room.

Abstract: A cathode active material for lithium secondary batteries according to embodiments of the present invention includes different types of lithium metal oxide particles having different circularities in a predetermined mixing weight ratio. When using the cathode active material for a lithium secondary battery, it is possible to provide a secondary battery having enhanced mechanical and electrical stability, and improved energy density.

Abstract: A cathode active material precursor for a lithium secondary battery has a structure of a nickel composite hydroxide. A first peak intensity ratio represented by Equation 1 is 0.5 or more, and a second peak intensity ratio represented by Equation 2 is 0.7 or more. A cathode active material and a lithium secondary battery having a stabilized crystal structure are provided using the cathode active material precursor.

Abstract: The present invention relates to a mechanical meta-material based electromagnetic wave absorber, wherein a shape of the electromagnetic wave absorber is any one of a kelvin-foam, an octet-truss, a body-centered cubic lattice, a simple cubic triply minimal surface (SC-TPMS), and a cubic cellular core (CCC) and a honeycomb, a dielectric loss of the electromagnetic wave absorber is controlled by changing a strut diameter of a unit cell including at least one of carbon black, carbon nanotube, carbon fiber and graphene constituting the electromagnetic wave absorber.

Abstract: A display device may include a substrate including a circular display area and a non-display area, a plurality of pixels including a first pixel and a second pixel disposed on the display area of the substrate, a first sub-demux circuit connected to the first pixel and disposed on the non-display area, a second sub-demux circuit connected to the second pixel and disposed on the non-display area, a first connection line connected to the first sub-demux circuit and the second sub-demux circuit and disposed on the non-display area to transfer first and second data input signals to the first and second sub-demux circuits, and a plurality of gate stages connected to the pixels and disposed on the non-display area to transfer gate signals to the pixels. Some of the gate stages are disposed between the first sub-demux circuit and the second sub-demux circuit.

Abstract: Embodiments of the present disclosure provide a blade-stator system and the vertical take-off and landing flight apparatus comprising the blade-stator system, the blade-stator system including a duct disposed inside a flight body, upper and lower sides of the duct being open, and an inside of the duct being hollow; a blade assembly installed rotatably inside the duct and including a blade body of which an angle is changeable; a stator assembly connected to the blade assembly and the duct, supporting the blade assembly, and rotatable by a predetermined angle; a controller electrically connected to the blade assembly and the stator assembly and configured to control driving of the blade body and the stator assembly, wherein the angle of the stator assembly is changed in response to receiving an electrical signal from the controller so as to be interlocked with a change of the angle of the blade body.

Abstract: A cathode active material for a lithium secondary battery comprises lithium-nickel composite metal oxide particles, each of which has a secondary particle structure in which primary particles are aggregated. The lithium-nickel composite metal oxide particles include a first element including at least one element selected from the group consisting of B, Al, Si, Ti, V, Mn, Fe, Co, Cu, Zn, Zr, Mo and W, and a second element having an ionic radius of 80 pm or more. The second element is different from nickel and the first element. The second element is present on an outer surface of the secondary particle, at grain boundaries between the primary particles and at an inside of the primary particles.

Abstract: A cathode active material for a lithium secondary battery comprises a lithium metal oxide that has a layered crystal structure and contains nickel and aluminum. The lithium metal oxide contains 70 mol % or more of nickel based on a total number of moles of all elements excluding lithium and oxygen. A ratio of lithium sites occupied by nickel instead of lithium among all lithium sites in the lithium metal oxide is in a range from 1% to 3.5%. A weight ratio of aluminum to nickel in the lithium metal oxide is in a range from 1/550 to 1/100.

Abstract: An apparatus for providing a folder chat room includes: a memory; and a processor electrically connected to the memory, wherein the processor receives a request for access to a folder from a user terminal, provides a list of files in the folder, and determines the user terminal's right to access a folder chat room and provides at least part of a message thread that is associated with the folder and rendered as a folder chat room on the user terminal.

Abstract: A curtain airbag apparatus of a vehicle includes: a main chamber mounted on the vehicle from a side of an occupant, and configured to be deployed by being supplied gas therein, and pressurized in colliding with the occupant in the deployed state; a vent hole spaced from an inflow path through which the gas flows into the main chamber, and opened for the gas inside the main chamber to flow; and a venting chamber connected to the main chamber so that the gas inside the main chamber flows into through the vent hole, wherein a gas flow through the vent hole from the main chamber to the venting chamber is restricted within the vent hole or the venting chamber.

Abstract: An electronic apparatus includes a base substrate having a first region, a second region at least partially surrounded by the first region, and a display region at least partially surrounding the first region, a plurality of pixels disposed on the base substrate, each of which includes a transistor and a light emitting element connected to the transistor, a hole line connecting pixels with the second region interposed therebetween, and a hole pattern electrically insulated from the hole line, disposed in the first region, and at least partially surrounding the second region.

Abstract: Disclosed is a task map providing apparatus for displaying one or more tasks, the apparatus including a memory and a processor electrically connected with the memory. The processor may be configured to generate the one or more tasks by receiving, from a task instructor who instructs recording a note through the one or more tasks, information on a task performer instructed to record the note corresponding to the one or more asks, generate progressive bars to correspond the one or more tasks, the progressive bar representing how many days have passed and remain with respect to a note recording due date by which the task performer needs to record the note.