Abstract: A system and method of controlling surrounding devices, based on a topology are provided. The method of controlling sub surrounding devices, which is performed by a main surrounding device, includes receiving a plurality of pieces of surrounding device information about the sub surrounding devices from a host device; receiving context information about a context of the host device from the host device; obtaining topology setting information about topology configuration standards; determining a sub surrounding device to be comprised in a topology from among the sub surrounding devices, based on the context information and the topology setting information; connecting the main surrounding device with the host device and the sub surrounding device; and controlling the sub surrounding device, based on control information received from the host device.

Abstract: A code obfuscation device and a method of obfuscating a code of an application program file are disclosed. The code obfuscation device includes an extraction circuit uncompressing an application program file to extract a Dalvik executable file, a code analysis circuit analyzing a bytecode of the Dalvik executable file, a control circuit determining an obfuscation character and a number and a location of the obfuscation character to be inserted in the bytecode, and an identifier conversion circuit inserting the obfuscation character in the bytecode to convert an identifier of the bytecode. Since the identifier of the bytecode is converted using an obfuscation character, which corresponds to a character that is invisible on a screen or has a different Unicode from another character displayed on the screen as a same shape as the character, the application program file has an increased resistance to a reverse engineering attack.

Abstract: A linear vibrator includes a housing providing an internal space; a fixed part including a coil fixed to the housing to be disposed in the internal space; a vibrating part including a magnet disposed to face the coil and generating electromagnetic force by interacting with the coil; and an elastic member having one end fixed to the housing and the other end fixed to the vibrating part to elastically support the vibrating part, wherein the elastic member includes a first fixed part fixed to the housing, a second fixed part fixed to the vibrating part, and a deformable part connecting the first fixed part and the second fixed part to each other and elastically deformed, and the first fixed part includes a welded part being welded and coupled to the housing at the outside of a portion of the first fixed part to which the deformable part is connected.

Abstract: A method of forming a pattern includes forming a mask pattern on a substrate; etching the substrate by deep reactive ion etching (DRIE) and by using the mask pattern as an etch mask; partially removing the mask pattern to expose a portion of an upper surface of the substrate; and etching the exposed portion of the upper surface of the substrate. In the method, when a pattern is formed by DRIE, an upper portion of the pattern does not protrude or scarcely protrudes, and scallops of a sidewall of the pattern are smooth, and thus a conformal material layer may be easily formed on a surface of the pattern.

Abstract: The present invention relates to a method of preparing a vinyl chloride polymer having good thermal stability due to the restraint of dehydrochlorination by heat or ultraviolet rays, and a vinyl chloride polymer prepared thereby. In the preparation method, a modifier is introduced at the end of a polymerization process to impart the vinyl chloride polymer with high thermal stability without inducing modification. Therefore, the generation of dehydrochlorination due to heat or ultraviolet rays may be markedly restrained, thermal stability may be improved, and discoloration or the modification of physical properties may be prevented in the vinyl chloride polymer thus prepared.

Abstract: An image-based super-resolution method using a cone-beam-based line-of-response (LOR) reconfiguration in a positron emission tomography (PET) image is provided. That is, an apparatus and method for reconfiguring a super-resolution PET image using a cone-beam-based LOR reconfiguration is provided.

Abstract: A display apparatus including a main body, a display panel installed in the main body, a video call unit installed to the main body, a circuit board for control of the video call unit, and a cable to connect the video call unit and the circuit board to each other, is provided. Installing the video call unit to the main body enables a video call via the display apparatus.

Abstract: Provided are multilayer video encoding/decoding methods. The multilayer video decoding method includes obtaining, from a bitstream, instantaneous decoder refresh (IDR) alignment information specifying whether at least one intra random access point (IRAP) picture for a random access and comprised in a same access unit is limited to being an IDR picture; and reconstructing a multilayer video by decoding encoded data by using the IDR alignment information.

Abstract: A flexible substrate, a method of manufacturing the same, and an organic light emitting diode display, the flexible substrate including a first flexible layer; a polysilicon layer on the first flexible layer, the polysilicon layer having a plurality of protrusions on a surface thereof; and a second flexible layer on the polysilicon layer.

Abstract: Provided is a multilayer video decoding method. The multilayer video decoding method may include: acquiring a network abstraction layer (NAL) unit from a bitstream of an encoded image; acquiring layer information, which is commonly used to decode base layer encoded data and enhancement layer encoded data, from a parameter included in the NAL unit; and reconstructing the multilayer image by decoding the base layer encoded data and the enhancement layer encoded data by using the layer information, wherein the parameter uses two or more bits to represent any one of information about a profile, tier, and level of layers constituting the multilayer, information about a phase alignment mode of a luma sample grid between layers constituting the multilayer, information about a picture type alignment mode between layers constituting the multilayer, and information specifying a layer set to be decoded.

Abstract: Disclosed are a method of preparing allyl alcohol and allyl alcohol prepared thereby. The method of preparing allyl alcohol includes adding glycerol with formic acid in an amount of 0.8˜2 equivalents relative to 1 equivalent of glycerol, and increasing a reaction temperature to 220˜260° C. from room temperature at a heating rate of 2.0˜7.0° C./min so that glycerol and formic acid are reacted.

Abstract: A video apparatus includes a receiving unit to receive a selection command for at least one item from among a plurality of items, and a control unit to provide quantity information about alternative items to the selected item when at least one item is selected. A user is provided with the quantity information about the alternative items placed alongside a currently selected item, and thus able to intuitively determine the distribution of the items and a direction in which he may choose to view or select the items. As a result, the user is able to navigate through a plurality of items with convenience. The user is also provided with the information about the items currently not displayed on a display, and thus does not feel inconvenience caused by the limited size of the display screen.

Abstract: A base station identifies user-wearable devices being worn by a user, wherein each of the user-wearable devices is battery powered, includes a plurality of sensors, performs wirelessly communication, and is worn on a separate portion of the user's body. For each of the user-wearable devices, the base station identifies a portion of the user's body on which the user-wearable device is being worn. The base station also identifies an activity in which the user is engaged, and identifies multiple types of sensor data to be sensed using the sensors of the user-wearable devices, to enable tracking of metric(s) relevant to the activity in which the user is engaged. The base station determines how to distribute sensing responsibilities for the multiple types of sensor data among the sensors of the user-wearable devices being worn by the user, and selectively activates and deactivates individual sensors of each of the user-wearable devices.

Abstract: Provided is a multi-layer video decoding method for efficiently obtaining, from a bitstream, information indicating a maximum size of a decoded picture buffer (DPB) regarding a layer set including a plurality of layers.

Abstract: An electronic apparatus and a control method thereof are disclosed. The electronic apparatus according includes: a first communicator configured to communicate with an authentication terminal device; a second communicator configured to communicate with a new terminal device that is not registered with an access point (AP); a storage configured to store authentication information for accessing the AP; and a controller configured to control the second communicator to transmit the authentication information that is stored in the storage to the new terminal device in response to receiving terminal information of the new terminal device from the authentication terminal device through the first communicator.

Abstract: A user-wearable device includes a front facing first light detector and a backside optical sensor, which faces the user's skin and includes a light source and a second light detector. The device also includes a skin tone detector and an ultraviolet (UV) exposure detector. The UV exposure detector is adapted to determine estimate(s) of a user's exposure to UV light in dependence on signal(s) produced using the first light detector, calibrate UV exposure threshold(s) in dependence on a skin tone metric produced using the skin tone detector, compare estimate(s) of a user's exposure to UV light to calibrated UV exposure threshold(s), and selectively trigger an alert in dependence on results of the comparison(s). The second light detector is also used to produce a photoplethysmography (PPG) signal from which measures heart rate (HR), heart rate variability (HRV), respiration rate (RR) or respiratory sinus arrhythmia (RSA) is/are produced.

Abstract: A memory module includes a command/address (CA) register, memory devices, and a module resistor unit mounted on a circuit board. The centrally disposed CA register drive the memory devices one or more internal CA signal(s) to arrangements of memory devices using multiple CA transmission lines, wherein the multiple internal CA transmission lines are commonly terminated in the module resistor unit.

Abstract: Provided is a steel having excellent weldability and impact toughness in a welding zone comprising: by weight (wt.) %, carbon (C): 0.1% to 0.3%, manganese (Mn): 11% to 13%, iron (Fe) as a residual component thereof, and other inevitable impurities, and positive and negative segregation zones in a layered form. The positive segregation zone comprises austenite and epsilon martensite, and the negative segregation zone comprises, by area fraction, epsilon martensite of less than 5% and alpha martensite.

Abstract: A method and an electronic device for displaying content are provided. The method includes identifying a first content element corresponding to a preset virtual display among one or more content elements to be displayed on a display of the electronic device and displaying a first portion of the first content element on the display based on orientation information of the virtual display on the display.

Abstract: Compounds of formula (I), including pharmaceutically acceptable salts thereof, are set forth herein: wherein R1 and R2 are independently hydrogen, or —CH3; or R1 and R2 can join together in a ring by adding —(CH2)4—; R3 is hydrogen or C1-C3 alkyl; Y and Z are independently a C6-C10-aryl group or a 5-10 membered heterocyclic group which can be further substituted with from 0-3 substituents selected from the group of halogen, hydroxy, amino, C1-4alkylamino, C1-4dialkylamino, haloC1-4 alkyl, CN, C1-C6 alkyl or cycloalkyl, C1-C6 alkoxy, —C?OC1-4alkyl, —SO2C1-4alkyl, and C2-C4 alkynyl; A is selected from the group of phenyl, benzyl, oxazolyl, thiazolyl, isoxazolyl, imidazolyl, pyrazolyl, pyridyl, pyrimidinyl, and pyrazinyl groups which can be further substituted with from 0-3 substituents selected from the group of halogen, hydroxy, amino, C1-4alkylamino, C1-4dialkylamino, haloC1-4 alkyl, hydroxyC1-6 alkyl, CN, C1-C6 alkyl or cycloalkyl, C1-C6 alkoxy, and C2-C4 alkynyl; L is —NHCO— or is a single bond; and L and Z