Abstract: A method for producing a lead-free X-ray shielding material using bismuth iodide is provided, the method including a first step of producing porous PDMS (Polydimethylsiloxane); a second step of producing a mixed solution of BiI3 and THF; and a third step of immersing the porous PDMS into the mixed solution such that the BiI3 is loaded into the porous PDMS to produce a BiI3-PDMS composite material.

Abstract: Disclosed is a miniaturized battery module in which a space except for a space of a battery cell is minimized and the number of components is reduced. The miniaturized battery module includes a cell assembly configured by assembling a plurality of battery cells, an upper frame inserted into an outer upper surface of the cell assembly, a lower frame inserted into an outer lower surface of the cell assembly and fastened to the upper frame, and first and second endplates fastened to two opposite ends of the cell assembly and configured to fix the plurality of battery cells. In this case, at least two or more of the plurality of the battery cells are arranged side by side, and the upper frame and the lower frame are fastened by welding.

Abstract: A semiconductor memory includes metallic lines on a substrate and including an uppermost metallic line, a semiconductor conduction line on the uppermost metallic line, a vertical structure penetrating the semiconductor conduction line and metallic lines, and including a vertical structure that includes an upper channel film, a first lower channel film, and an upper connection channel film connecting the upper channel film and the first lower channel film between a bottom of the semiconductor conduction line and a bottom of the uppermost metallic line, and a first cutting line through the metallic lines and the semiconductor conduction line, and including a first upper cutting line through the semiconductor conduction line, and a first lower cutting line through the plurality of metallic lines, a width of the first upper cutting line being greater than a width of an extension line of a sidewall of the first lower cutting line.

Abstract: An active noise control system selects one reference sensor providing a reference signal with the largest coherence to a noise signal, among a plurality of available reference sensors, as a first entry of a reference sensor set. After selecting the first entry, the active noise control system repeats a process in which a sensor capable of providing the largest information quantity to a current reference sensor set among remaining sensors is selected as a new entry of a reference sensor set, until a desired number of sensors is reached or a desired control level is reached. When the reference sensor set is determined, the active noise control system utilizes the entries of the reference sensor set to generates a noise control signal suitable for canceling the noise signal.

Abstract: Provided is an unconstrained vibration damping metal sheet with foam pores. The unconstrained vibration damping metal sheet of the present invention comprises: a metal sheet; an organic-inorganic pretreatment layer containing an acrylic resin formed on the metal sheet; and a foam resin layer formed on the pretreatment layer, the foam resin layer containing, based on weight % thereof, a thermoplastic polyvinyl chloride resin: 40-80%, a plasticizer: 5-40%, a foaming agent: 0.1-10%, an oxide-based crosslinker: 1-4%, and spherical silica: 1-10%.

Abstract: Disclosed herein are an apparatus and method for providing a remote work environment. The apparatus includes one or more processors and executable memory for storing at least one program executed by the one or more processors. The at least one program performs Virtual Private Network (VPN) authentication in response to a request for remote access to a work network from a user terminal, performs user authentication in order to connect the user terminal that succeeds in VPN authentication to the work network, decrypts the encrypted user data area of the user terminal that is connected to the work network, and provides the remote work environment to the user terminal based on the user data area through the work network.

Abstract: A method and apparatus for providing an operating system based on a lightweight hypervisor. An electronic device includes a hypervisor, an operating system monitor, and a virtualized operating system. The hypervisor enables the virtualized operating system and a physical machine to share the resources of the physical machine. If the virtualized operating system accesses the resource, the operating system monitor determines whether to allow the access to the resource. Also, the operating system monitor verifies the integrity of the virtualized operating system and determines whether a threat to the virtualized operating system exists.

Abstract: A method for providing a browser using browser processes separated based on access privileges and an apparatus using the method. The method includes acquiring a first address corresponding to a first webpage; acquiring a first set of terminal access privileges based on the first address from a privilege control list and executing a first browser process corresponding to the first set of terminal access privileges; determining whether to allow rendering by comparing the first set of terminal access privileges with a second set of terminal access privileges corresponding to a second webpage when the first browser process attempts to render the second webpage; and if the rendering is not allowed, blocking the first browser process from rendering and rendering the second webpage by executing a second browser process corresponding to the second set of terminal access privileges.

Abstract: A method for providing a browser using browser processes separated based on access privileges and an apparatus using the method. The method includes acquiring a first address corresponding to a first webpage; acquiring a first set of terminal access privileges based on the first address from a privilege control list and executing a first browser process corresponding to the first set of terminal access privileges; determining whether to allow rendering by comparing the first set of terminal access privileges with a second set of terminal access privileges corresponding to a second webpage when the first browser process attempts to render the second webpage; and if the rendering is not allowed, blocking the first browser process from rendering and rendering the second webpage by executing a second browser process corresponding to the second set of terminal access privileges.

Abstract: A method and apparatus for providing an operating system based on a lightweight hypervisor. An electronic device includes a hypervisor, an operating system monitor, and a virtualized operating system. The hypervisor enables the virtualized operating system and a physical machine to share the resources of the physical machine. If the virtualized operating system accesses the resource, the operating system monitor determines whether to allow the access to the resource. Also, the operating system monitor verifies the integrity of the virtualized operating system and determines whether a threat to the virtualized operating system exists.

Abstract: An apparatus and method for controlling a linear compressor with an inverter unit. In the apparatus and method, a capacitor is connected between a driving motor and an inverter unit that applies a voltage to the driving motor according to an output frequency thereof, thereby preventing a jump phenomenon due to an inductance of the motor coil. Furthermore, the linear compressor is precisely controlled through the inverter unit, thereby enhancing stability of the apparatus.

Abstract: An apparatus and method for controlling a linear compressor with an inverter unit. In the apparatus and method, a capacitor is connected between a driving motor and an inverter unit that applies a voltage to the driving motor according to an output frequency thereof, thereby preventing a jump phenomenon due to an inductance of the motor coil. Furthermore, the linear compressor is precisely controlled through the inverter unit, thereby enhancing stability of the apparatus.