Abstract: A compound of Chemical Formula 1: wherein: Ar1 is a substituted or unsubstituted C6-60 aryl or a substituted or unsubstituted C2-60 heteroaryl containing at least one of N, O, or S as a heteroatom; X is O or S; R1 is hydrogen, deuterium, a substituted or unsubstituted C6-60 aryl, or a substituted or unsubstituted C2-60 heteroaryl containing at least one heteroatom selected from the group consisting of N, O and S; each R2 is independently hydrogen, deuterium, or a substituted or unsubstituted C6-60 aryl; each R3 is independently hydrogen, deuterium, or a substituted or unsubstituted C6-60 aryl; each R4 is independently hydrogen, deuterium, or a substituted or unsubstituted C6-60 aryl; and the other substituents are as defined in the specification, wherein the compound of Chemical Formula 1 is substituted with at least one deuterium; and an organic light emitting device comprising the same.

Abstract: According to the disclosure, a display device includes a substrate including a display area and a non-display area, outer pixels positioned in the display area and positioned in a first direction from an edge of the substrate, dummy holes positioned in the non-display area and positioned between the edge of the substrate and the outer pixels, and a dummy line positioned in the non-display area and extending in a second direction different from the first direction between the dummy holes. The dummy line is positioned between a first insulating layer and a second insulating layer, and the dummy holes pass through the first insulating layer and the second insulating layer.

Abstract: A novel compound of Chemical Formula 1: wherein in the Chemical Formula 1: n is an integer of 1 to 6; X is O or S; L1 and L2 are each independently a single bond, substituted or unsubstituted C6-60 arylene, or substituted or unsubstituted C2-60 heteroarylene containing at least one heteroatom selected from the group consisting of O, S, Si, P and B; Ar1 is cyano, substituted or unsubstituted C6-60 aryl, or substituted or unsubstituted C2-60 heteroaryl containing at least one heteroatom selected from the group consisting of O, S, Si, P and B; and Ar2 and Ar3 are each independently substituted or unsubstituted C6-60 aryl or substituted or unsubstituted C2-60 heteroaryl containing at least one heteroatom selected from the group consisting of O, S, Si, P and B; and an organic light emitting device including the same.

Abstract: Disclosed are a method and device for managing a project by using data filtering. A project is efficiently operated by dividing a project based on a minimum unit task and designing a plurality of child projects connected in sequential order such that a plurality of child projects proceed in order.

Abstract: Provided is a compound of Chemical Formula 1: wherein: each X is independently N or CH, provided that at least one X is N; Ar1 and Ar2 are each independently a substituted or unsubstituted C6-60 aryl or a substituted or unsubstituted C5-60 heteroaryl containing one or more of N, O and S; Ar3 is a substituted or unsubstituted C5-60 heteroaryl containing at least one N; D is a substituent of any one of the following Chemical Formulas 2-1 to 2-3: wherein: Y1 is O, S, NR2, or CR3R4; n is an integer of 0 to 10; each R1 is independently hydrogen, deuterium, or a substituted or unsubstituted: C1-60 alkyl, C3-60 cycloalkyl, C6-60 aryl, or C5-60 heteroaryl containing one or more of N, O and S; and R2 to R4 are each independently a substituted or unsubstituted C1-60 alkyl or a substituted or unsubstituted C6-60 aryl, and an organic light emitting device comprising the same.

Abstract: A compound represented by Chemical Formula 1 and an organic light emitting device including the same are provided.

Abstract: According to one aspect of the present invention, provided is a balancing system comprising: an elevator winding drum connected to an elevator car; a center gear part connected to a first driving shaft of the elevator winding drum and including a first center gear, and an outer gear part including a first outer gear which contacts and rotates with the first center gear, and, when the elevator winding drum receives force in a first direction by the elevator car, the center gear part applies force with respect to the elevator winding drum in the opposite direction of the first direction by the force applied from the outer gear part.

Abstract: A method, of training an anomaly detecting model using a plurality of pieces of graph data, includes: (a) inputting one piece of graph data that has not yet been input, among the plurality of pieces of graph data, to a graph neural network (GNN) AutoEncoder calculating a probability of each edge as input data; (b) calculating a difference value (hereinafter, “edge difference value”) between an edge probability value of reconstructed data output by the GNN AutoEncoder and an edge value of the input data; (c) calculating an average value (hereinafter, “positive edge loss”) of a positive edge and an average value (hereinafter, “negative edge loss”) of a negative edge using the edge difference value, and calculating an edge prediction loss value of the reconstructed data by summing the positive edge loss and the negative edge loss; (d) retraining the GNN AutoEncoder until the edge prediction loss value is minimized.

Abstract: An unstructured document analysis method according to an embodiment includes: operations of acquiring unstructured document data including font characteristic data and document structure data, extracting text included in the unstructured document data on the basis of the font characteristic data or the document structure data, classifying the extracted text into a pre-classified item using a trained neural network model, acquiring a content query related to the content included in the unstructured document data and associated with the pre-classified item, and generating an answer to the content query on the basis of the extracted text classified into the item.

Abstract: A semiconductor chip includes a semiconductor device connected between a first node to which a power supply voltage is applied and a second node to which a ground voltage is applied, a first ring oscillator connected to the first node through a first supply switch and the second node through a first ground switch and a second ring oscillator connected to the first node through a second supply switch and the second node through a second ground switch, wherein the first supply and ground switches are configured to operate in response to a first control signal, thereby operating the first ring oscillator, and the second supply and ground switches are configured to operate in response to a second control signal, thereby operating the second ring oscillator.

Abstract: Provided is a heterocyclic compound of Chemical Formula 1: wherein: X is O or S; Y1, Y2 and Y3 are each independently CH or N, provided that at least one is N; L1 and L2 are each independently a direct bond, a substituted or unsubstituted C6-60 arylene, or a substituted or unsubstituted C5-60 heteroarylene containing at least one of N, O and S; and Ar is a substituted or unsubstituted C6-60 aryl, and Ar2 and Ar3 are each independently a substituted or unsubstituted C6-60 aryl or a C5-60 heteroaryl containing at least one of N, O and S, provided that when all of Ar1, Ar2 and Ar3 are a substituted or unsubstituted C6-60 aryl, any one of Ar1, Ar2 and Ar3 is substituted with 4 or more deuteriums; and an organic light emitting device including the same.

Abstract: Provided is a washing machine including a main body having an opening and a door assembly disposed at the opening, wherein the door assembly includes a door that opens and closes the opening and an auxiliary washing unit having an auxiliary washing space in which hand-washing can be performed, and provided to pivot about one side of the door in an inside of the door. Through this configuration, separated washing spaces can be provided and separate hand-washing can be performed. Also, pressure of washing water supplied into the washing machine can be regulated so that water supply efficiency can be improved and a flow rate of the washing water can be adjusted.

Abstract: Disclosed are a composition and a method for diagnosing breast cancer using extracellular vesicle-miRNA. The composition for diagnosing the breast cancer according includes an agent that measures an expression level of at least one miRNA selected from a group consisting of miR-9, MiR-16, MiR-21, and MiR-429. Furthermore, the method for diagnosing breast cancer includes measuring an expression level of at least one miRNA selected from a group consisting of MiR-9, MiR-16, MiR-21, and MiR-429 from a sample, and diagnosing the breast cancer based on the measurement result.

Abstract: An organic light emitting device including an anode; a cathode opposite to the anode; and a light emitting layer interposed between the anode and the cathode, wherein the light emitting layer includes a first compound of Chemical Formula 1 and a second compound of Chemical Formula 2: where Ar1 and Ar2 are each independently a substituted or unsubstituted C6-60 aryl or C2-60 heteroaryl containing at least one heteroatom selected among N, O and S; X1 and X2 are each independently O or S; A1 and A2 are each independently a naphthalene ring fused with an adjacent pentagonal ring; Ar? is a substituted or unsubstituted C6-60 aryl or C2-60 heteroaryl containing at least one heteroatom selected among N, O and S; and the other substituents are as defined in the specification.

Abstract: A compound of Chemical Formula 1: where X1 and X2 are each independently O or S; A1 is a benzene ring fused with adjacent pentagonal and benzene rings; A2 is a naphthalene ring fused with an adjacent pentagonal ring; Ar is a substituted or unsubstituted C6-60 aryl, a substituted or unsubstituted C2-60 heteroaryl containing a heteroatom of O or S, or a substituted or unsubstituted C2-60 heteroaryl containing a heteroatom of N and at least one selected of O and S; R1 and R2 are each independently hydrogen, deuterium, halogen, cyano, or a substituted or unsubstituted C1-60 alkyl; and the other substituents are as defined in the specification; and an organic light emitting device including the same. The organic light emitting device including the compound of Chemical Formula 1 in an organic material layer exhibits improved efficiency, low driving voltage and/or improved lifetime characteristics.

Abstract: An organic light emitting device including: an anode; a cathode opposite to the anode; and a light emitting layer interposed between the anode and the cathode, wherein the light emitting layer includes a first compound of Chemical Formula 1, and a second compound of Chemical Formula 2: wherein Ar1 and Ar2 are each independently a substituted or unsubstituted C6-60 aryl or C2-60 heteroaryl containing at least one heteroatom selected among N, O and S; X1 and X2 are each independently O or S; A1 and A2 are each independently a naphthalene ring fused with an adjacent pentagonal ring; Ar? is a substituted or unsubstituted C6-60 aryl or C2-60 heteroaryl containing at least one heteroatom selected among N, O and S; and the other substituents are as defined in the specification.

Abstract: The present specification provides a compound represented by Formula 1 and an organic light emitting device including the same. The compound is used for an organic material layer of the organic light emitting device.

Abstract: The present invention relates to a double-joint device for a product and, more specifically, left and right operation pieces rotate at the same angle, in a state in which the operation pieces attached to left and right bodies of a door, a vehicle door, a trunk, a bonnet, a smartphone, a laptop and the like are folded, and are horizontally folded or unfolded, and thus a level difference, a step, and a gap between the left and right operation pieces are prevented.

Abstract: Provided is a heterocyclic compound of Chemical Formula 1: wherein: X1 is O or S; L1 is a single bond or an unsubstituted phenylene; L2 is a single bond, or a substituted or unsubstituted: phenylene, naphthylene, or biphenylenyl; Y1 to Y3 are each independently N or CR3, where at least one is N; Ar1a and Ar1b are each independently a substituted or unsubstituted: C6-60 aryl or C1-60 heteroaryl containing 1 to 3 heteroatoms selected from N, O and S; R1 and R2 are each independently hydrogen, deuterium, cyano, or a substituted or unsubstituted C1-10 alkyl; each R3 is independently hydrogen, deuterium, halogen, cyano, nitro, amino, or a substituted or unsubstituted: C1-60 alkyl, C1-60 haloalkyl, C1-60 alkoxy, a C1-60 haloalkoxy, C3-60 cycloalkyl, C2-60 alkenyl, C6-60 aryl, C6-60 aryloxy, or a C1-60 heteroaryl containing at least one heteroatom selected from N, O and S; and an organic light emitting device comprising the same.

Abstract: An organic light emitting device comprising: an anode; a cathode; and between the anode and the cathode a light emitting layer including a compound of Chemical Formula 1, and a compound of Chemical Formula 2: wherein: X1 is O or S, each X2 is independently N or CH, provided that at least one is N, each Ar1, Ar2 and Ar3 each independently is a substituted or unsubstituted C6-60 aryl or C2-60 heteroaryl containing any one or more of N, O, and S, B is benzene fused with two adjacent rings, and the other substituents are as defined in the specification. When compounds by Chemical Formulae 1 and 2 are used in the light emitting layer, the device has improved driving voltage, efficiency, and lifetime.