Abstract: In a method for preparing a cathode of a secondary battery, a method for preparing a purified N-methyl pyrrolidinone (NMP), and a method for purifying a waste NMP, an inhibitor is added to prevent NMP from being decomposed to produce formaldehyde during the process. 1. The inhibitor may be a phenol-based antioxidant and/or an amine-based light stabilizer.

Abstract: The present disclosure relates to an electronic device, and a wireless intrusion prevention system according to the present disclosure may include a sensing device and a controller. The sensing device may be configured to monitor a wireless frame transmitted/received between an access point (AP) and a plurality of stations over a wireless network and generate frame analysis information based on the wireless frame. The controller may be configured to compare manufacturer identification information including Organizationally Unique Identifiers (OUIs) with Media Access Control (MAC) addresses of respective stations included in the frame analysis information, determine a target station having a random MAC address among the plurality of stations based on a result of the comparison, and control access to the access point by the target station based on a blocking policy.

Abstract: The semiconductor substrate of the present invention may comprise a substrate and a semiconductor layer arranged on the substrate. Additional energy is supplied to sputtering in a thin film growth process step so that the semiconductor layer can be deposited. The additional energy can be at least one from among an ion beam, an electron beam, plasma, ultraviolet rays, a laser, and an LED light source. For example, the substrate can be a glass substrate, and the semiconductor layer can be a nitride semiconductor layer having a single-crystal plane. The semiconductor layer can be deposited by means of ion beam sputtering using the ion beam as the additional energy.

Abstract: A cathode active material for a lithium secondary battery includes a first active material particle having a secondary particle structure that include first primary particles that are agglomerated or aggregated, and a second active material particle having a secondary particle structure that includes second primary particles that are agglomerated or aggregated. A particle diameter of the second active material particle is smaller than a particle diameter of the first active material particle, and an aspect ratio of the second primary particles is smaller than an aspect ratio of the first primary particles. Each of the first active material particle and the second active material particle includes a lithium-nickel-cobalt-based metal oxide, and a mass ratio of cobalt to active metals excluding lithium, nickel and cobalt in the lithium-nickel-cobalt-based metal oxide is in a range from 0.7 to 2.0.

Abstract: The present disclosure relates to a polycarbonate and a preparation method thereof, which has a novel structure with an improvement in weather resistance and refractive index, while having excellent mechanical properties.

Abstract: The present disclosure relates to a manufacturing method for 4-methoxypyrrole derivatives. The embodiment of the present disclosure is useful for industrial mass production of 4-methoxypyrrole derivatives, because the process efficiency and yield are improved, and the use of hazardous reagents and environmental polluting reagents is avoided.

Abstract: In one example, a semiconductor device comprises a redistribution layer (RDL) substrate having a top surface and a bottom surface, wherein the RDL substrate comprises a filler-free dielectric material, an electronic device on the top surface of the RDL substrate, an electrical interconnect on the bottom surface of the RDL substrate and electrically coupled to the electronic device, a first protective material contacting a side surface of the electronic device and the top surface of the RDL substrate, and a second protective material contacting a side surface of the electrical interconnect and the bottom surface of the RDL substrate. Other examples and related methods are also disclosed herein.

Abstract: Disclosed herein are a motion-based virtual-reality simulator device and a method for controlling the same. The motion-based virtual-reality simulator device includes a virtual-reality interface for outputting virtual reality content in a form of multi-sense data that is perceptible by a user, a virtual-reality movement implementation unit including a track component for performing continuous track motion in a state in which a user gets on the track component, the track component being configured such that a slope of the track component is controlled while a surface of the track component is deformed into an even surface or an uneven surface, and an interworking control unit for outputting a control signal to the virtual-reality movement implementation unit so that a slope and a surface of the track component are deformed in accordance with the virtual reality content that is output through the virtual-reality interface.

Abstract: A flexible printed circuit board according to an embodiment includes: a substrate; a circuit pattern disposed on the substrate; and a protective layer on the circuit pattern, wherein the circuit pattern includes a first circuit pattern and a second circuit pattern connected to a chip in a chip mounting region, a first direction in which the circuit pattern extends and a second direction perpendicular to the first direction are defined in the substrate, the substrate includes first and second ends facing each other in the first direction and third and fourth ends facing each other in the second direction, the protective layer includes fifth and sixth ends spaced apart from ends of the substrate and facing in the first direction and seventh and eighth ends spaced apart from ends of the substrate and facing in the second direction, and an outer pattern disposed adjacent to the third end and the fourth end on the substrate, wherein the outer pattern includes: a first outer pattern and a second outer pattern adjac

Abstract: A flexible printed circuit board according to an embodiment includes: a substrate; a circuit pattern disposed on the substrate; and a protective layer on the circuit pattern, wherein the circuit pattern includes a first circuit pattern and a second circuit pattern connected to a chip in a chip mounting region, a first direction that is a direction in which the circuit pattern extends and a second direction perpendicular to the first direction are defined in the substrate, the substrate includes first and second ends facing each other in the first direction and third and fourth ends facing each other in the second direction, the protective layer includes fifth and sixth ends spaced apart from ends of the substrate and facing in the first direction and seventh and eighth ends spaced apart from ends of the substrate and facing in the second direction, and an outer pattern disposed adjacent to the third end and the fourth end on the substrate, wherein the outer pattern includes: a first outer pattern and a second

Abstract: A muscle control device includes an electromyography (EMG) electrode unit including a plurality of electrodes, and that senses an EMG signal, an EMG circuit unit that generates channel data, based on electrode signals, a control unit that receives the channel data, extracts a volitional electromyography signal, based on the channel data, and determines FES (Functional Electrical Stimulation) stimulation parameters, based on the volitional electromyography signal, an FES electrode unit that outputs a functional electrical stimulation, based on the FES stimulation parameters, and an FES circuit unit that receives the FES stimulation parameters, generates the functional electrical stimulation, based on the FES stimulation parameters, and transmits the functional electrical stimulation to the FES electrode unit, and the control unit recognizes a direction and an intensity of a motion from the volitional electromyography signal, based on the volitional electromyography signal and adjusts an intensity of the functi

Abstract: A method, performed by an authoring system, of authoring content for a high-precision fire-dynamics-simulation (FDS) is provided. The authoring system selects a target object from an object DB storing a three-dimensional model of each object made to correspond to surface information indicating at least one material constituting a surface of the three-dimensional model and material information indicating fire attribute information of each material; arranges the selected target object in a three-dimensional space to author content for the FDS; converts the content for the FDS into an FDS input file used as an input for a simulator for the FDS; and outputs the FDS input file to the simulator.

Abstract: In a method for purifying highly pure isopropyl alcohol used in a semiconductor cleaning process, diacetone alcohol present in isopropyl alcohol is removed by an adsorption process, and diacetone alcohol, triisopropyl borate, and metal impurities are removed by a distillation process. The purified isopropyl alcohol may have a purity of has the moisture of 10 ppm or less, the triisopropyl boron compound of 50 ppt or less, and each metal of the metal impurities of 20 ppt or less.

Abstract: Provided is a method for purifying waste N-methyl-2-pyrrolidone, the method comprising the steps of: reacting the waste N-methyl-2-pyrrolidone containing an amine compound with an acid anhydride; converting the amine compound into an amide compound; and removing the amide compound by distillation, thereby manufacturing high-purity N-methyl-2-pyrrolidone that can be reused.

Abstract: Provided is a method for purifying an alkylene glycol monoalkyl ether carboxylic acid ester (AGAECE) for photoresist processing, wherein the method comprises the step of distillation after passing industrial AGAECE through a porous adsorbent impregnated with a basic material, and it is possible to obtain a semiconductor-grade high-purity AGAECE maintaining a low acid value and high purity according to the present invention.

Abstract: A flexible printed circuit board according to an embodiment includes: a substrate; a circuit pattern disposed on the substrate; and a protective layer on the circuit pattern, wherein the circuit pattern includes a first circuit pattern and a second circuit pattern connected to a chip in a chip mounting region, a first direction that is a direction in which the circuit pattern extends and a second direction perpendicular to the first direction are defined in the substrate, the substrate includes first and second ends facing each other in the first direction and third and fourth ends facing each other in the second direction, the protective layer includes fifth and sixth ends spaced apart from ends of the substrate and facing in the first direction and seventh and eighth ends spaced apart from ends of the substrate and facing in the second direction, and an outer pattern disposed adjacent to the third end and the fourth end on the substrate, wherein the outer pattern includes: a first outer pattern and a second

Abstract: A fire-fighting virtual reality simulator allows the trainee to move in a virtual space in various complex virtual fire disaster situations and perform a suppression of a virtual fire and a confrontation training. An experience interactive simulator for providing a trainee with a floor movement that may occur in a fire disaster situation so that the trainee wearing HMD in a virtual fire-fighting training has the same sense of feeling as that in an actual fire-fighting training is provided. For the realistic content experience, a physical floor movement, such as tilting, falling, and shaking of the floor is reproduced using a base motion, thereby providing a floor movement that enables a sense of feeling similar to a fire disaster situation.

Abstract: Disclosed herein are a system and a method for volitional electromyography (vEMG) signal detection from an EMG signal when functional electrical stimulation (FES) is applied. The system for vEMG signal detection includes a receiver for receiving data from an EMG electrode when FES is applied, a memory for storing a program for detecting a vEMG signal using the received data, and a processor for executing the program, wherein the processor cuts the data received from the EMG electrode disposed at a predetermined position, calculates a difference between data for previous FES and data for current FES, and detects the vEMG signal using the calculated difference.

Abstract: Disclosed herein are a motion-based virtual-reality simulator device and a method for controlling the same. The motion-based virtual-reality simulator device includes a virtual-reality interface for outputting virtual reality content in a form of multi-sense data that is perceptible by a user, a virtual-reality movement implementation unit including a track component for performing continuous track motion in a state in which a user gets on the track component, the track component being configured such that a slope of the track component is controlled while a surface of the track component is deformed into an even surface or an uneven surface, and an interworking control unit for outputting a control signal to the virtual-reality movement implementation unit so that a slope and a surface of the track component are deformed in accordance with the virtual reality content that is output through the virtual-reality interface.

Abstract: A fire-fighting virtual reality simulator allows the trainee to move in a virtual space in various complex virtual fire disaster situations and perform a suppression of a virtual fire and a confrontation training. An experience interactive simulator for providing a trainee with a floor movement that may occur in a fire disaster situation so that the trainee wearing HMD in a virtual fire-fighting training has the same sense of feeling as that in an actual fire-fighting training is provided. For the realistic content experience, a physical floor movement, such as tilting, falling, and shaking of the floor is reproduced using a base motion, thereby providing a floor movement that enables a sense of feeling similar to a fire disaster situation.