Abstract: An abnormal traffic detection apparatus and method based on Modbus communication pattern learning is provided. The abnormal traffic detection apparatus based on the Modbus communication pattern learning previously detects and responds to abnormal traffic on a Modbus/TCP protocol. According to the present invention, a communication service between control systems can be stably provided by previously detecting the abnormal traffic capable of interfering with a stable operation of the control system. Particularly, since the effective abnormal traffic on the Modbus/TCP protocol can be previously detected, security of the control system can be increased by rapid detection and response with respect to security threats on the Intranet of the control system, and availability can be secured.

Abstract: An apparatus and method of displaying a network security situation is provided. The apparatus includes an extraction unit configured to classify a characteristic factor including IP addresses of a transmission node and a reception node from a traffic flow, a network visualization unit configured to generate a domain circle visualizing each of a transmission domain and a reception domain as a circle shape by mapping the IP addresses of the transmission node and the reception node to points on circumference as one to one, arrange the generated domain circle on an axis, and visualize each of a transmission network area and a reception network area as a sphere shape, a session construction unit configured to a session of the visualized transmission network area and reception network visually, and a display unit configured to display the session which is visually constructed.

Abstract: Provided are a system and method for detecting an abnormal behavior of a control system by analyzing flows of the control system. Flow information of the control network is collected, and flows are classified according to the collected flow information and a flow group is generated. An abnormal behavior of the control system is detected by analyzing flows of the generate flow group. That is, internal systems of the control network are grouped according to functions, and a situation of a system of a group performing the same function is managed to thus quickly detect an abnormal behavior of the control system.

Abstract: A user interface apparatus for path search and a method thereof are disclosed. The interface apparatus for path search includes an interface unit configured to provide a first user interface comprising a plurality of image objects, the first user interface configured to implement sweeping transition between the image objects in at least one direction, wherein the interface unit displays an image associated with at least one place which is an object for path search on the image objects.

Abstract: A flexible display apparatus includes: a first flexible substrate including carbon and having an upper surface, a lower surface facing the upper surface, and a lateral surface coupling the upper surface to the lower surface; a first barrier layer on the first flexible substrate to cover the first flexible substrate; a second flexible substrate on the first barrier layer, the second flexible substrate including carbon and having an upper surface, a lower surface facing the upper surface, and a lateral surface coupling the upper surface to the lower surface; and an organic light emitting device on the second flexible substrate.

Abstract: Provided is an information reconciliation method in a quantum key distribution system between a transmitter and a receiver, which includes receiving a parity bit from the transmitter through a quantum channel, correcting an error of a receiver quantum key by using the received parity bit, and removing a residual error of the receiver quantum key through an open channel by using a cascade protocol to harmonize the receiver quantum key with a transmitter quantum key, wherein the parity bit is generated at the transmitter by using turbo codes. This method may enhance quantum key generation efficiency.

Abstract: Provided is an EA-CWS quantum error correction code for correcting an error on imperfect entangled qubits, and a method for correcting an error using entangled qubits snared between a sender and a receiver includes, after an encoding process to send the entangled qubits, performing an operation of a Pauli error on different stabilizer generators of an EA-CWS code, converting an error occurring on the sender or the receiver to en error correction code in a correctable error form as a result of the operation, and correcting the error on entangled qubits occurring at the side of the sender or the receiver by generating a word operator of a CWS code using the converted error correction code.

Abstract: Provided is a location-based transaction processing method and system using a communication device. The location-based transaction processing method may include providing information on a display frequency for each area displayed on a map service to a storekeeper terminal, and creating a market POI indicating a virtual marketplace of a storekeeper at a location selected by the storekeeper terminal based on the display frequency.

Abstract: A transmission device includes a data controller to output one or more data frames; a encoder to generate one or more encoded data packets for a first data frame among the one or more data frames; and a transmission controller to determine a transmission time point of each of the one or more encoded data packets, and transmit the one or more encoded data packets to a reception device at the determined transmission time point corresponding to each of the one or more encoded data packets.

Abstract: Provided is an apparatus for designing a quantum code, which includes an analyzing unit for analyzing at least one quantum error generated in a quantum error channel as at least one binary error by using a standard form codeword stabilized quantum (CWS) code, a code generating unit for generating a binary error-correcting code which corrects the at least one binary error, a word operator generating unit for generating at least one word operator of the CWS code by using the at least one binary error-correcting code, and a codeword generating unit for generating at least one codeword including at least one entangled qubit (ebit) by using the at least one word operator.

Abstract: Disclosed is an apparatus for preventing illegal access of industrial control system and a method thereof in accordance with the present invention. The apparatus for preventing illegal access of industrial control system includes: a first interface communicating a packet by interoperating with a management network group that requests a control command; a second interface communicating a packet by interoperating with a control network group that receives a control command from the management network group and processes it; and a control device, which, when a packet flows therein from the management network group or the control network group, checks whether or not at least one filter rule is set and controls the packet flow between the management network group and the control network group using the filter where the rule is set.

Abstract: An electronic device of the present invention is enclosed. An electronic device in one embodiment of the present invention periodically transmits current location information to the location information service providing server in case of executing grouping applications, produces group including at least one member, selected by a user, of address list information received from the location information service providing server, requests messages requesting group participation to the member included in the group through the social network service providing server in case of generating predetermined events, and periodically receives the location information from the member accepting the group participation and displays the received location information on a map.

Abstract: Provided is an organic light-emitting diode (OLED) display including: a first plastic layer; a first barrier layer formed on the first plastic layer; a first intermediate layer formed on the first barrier layer; a second plastic layer formed on the intermediate layer; an OLED layer formed on the second plastic layer; and a thin-film encapsulation layer encapsulating the OLED layer.

Abstract: An apparatus and method for transmitting in a multi-user multi-antenna system are provided. The apparatus includes a precoder for orthogonalizing a channel by removing a channel element of a corresponding terminal with respect to multiple terminals, for determining an effective channel of each terminal by decomposing the orthogonalized channel using Singular Value Decomposition (SVD), for determining a precoding matrix using the effective channel, and for mapping data streams of the multiple terminals to a plurality of transmit antennas using the precoding matrix, and the plurality of the transmit antennas for transmitting the data streams of the multiple terminals. Hence, it is possible to obtain an iteration algorithm performance requiring considerable computation while avoiding complexity and reducing computation.

Abstract: An apparatus and a method for transmitting data using a fountain code are provided. The method for transmitting data includes determining a degree distribution of a fountain code based on erasure rate information regarding at least one receiving end, performing fountain encoding according to the degree distribution, and transmitting symbols generated by the fountain encoding.

Abstract: Substrate heat treatment apparatus and method are provided. According to an embodiment of the present invention, there is provided a substrate heat treatment apparatus including an inner shell configured to form a substrate housing space to house at least one substrate, an outer shell configured to cover the inner shell, and having at least one gas hole, and at least one heater configured to heat the substrate, wherein the at least one gas hole is configured to allow a first gas to be injected into a space between the inner shell and the outer shell.

Abstract: Provided are a cognitive radio (CR) cooperative spectrum sensing method and a fusion center (FC) performing CR cooperative spectrum sensing. The CR cooperative spectrum sensing method includes receiving, at an FC, local spectrum sensing information about a predetermined frequency band from each of N secondary users (SUs) in a predetermined zone, determining, at the FC, the optimum number of SUs for determining whether the predetermined frequency band is being used by a primary user (PU) on the basis of the received local spectrum sensing information, and performing cooperative spectrum sensing on the basis of local spectrum sensing information received from the optimum number of SUs in the predetermined zone. The method is implemented by the FC. Accordingly, the method and FC find how many SUs are needed to determine that a frequency of a PU is being used in a corresponding-channel situation, thereby enabling efficient communication.

Abstract: The present invention relates to a system and method for determining the optimal number of hops when transmitting information over a relay network. To this end, the present invention provides a method for determining a communication path through which at least one of a source node, a destination node, and at least one relay node between the source node and the destination node transmits information between the source node and the destination node in a relay network, the method comprising determining the optimal number of hops taking into account an interference signal and a noise signal in each relay node existing on a plurality of communication paths connectable between the source node and the destination node; and determining one communication path satisfying the determined optimal number of hops from among the plurality of communication paths.

Abstract: A user interface apparatus for path search and a method thereof are disclosed. The interface apparatus for path search includes an interface unit configured to provide a first user interface comprising a plurality of image objects, the first user interface configured to implement sweeping transition between the image objects in at least one direction, wherein the interface unit displays an image associated with at least one place which is an object for path search on the image objects.

Abstract: A cooperative transmission method includes: a first operation of coding, by a source node, a message desired to be transmitted according to a first encoding scheme to generate a first codeword and transmitting the first codeword to a relay node and a destination node; a second operation of decoding, by the relay node, the first codeword which has been received from the source node, coding the decoded message according to a second coding scheme to generate a second codeword, coding a part corresponding to parity of the second codeword according to the first coding scheme to generate a third codeword, and transmitting the third codeword to the destination node; and a third operation of decoding, by the destination node, the first codeword which has been received from the source node and the third codeword which has been received from the relay node, combining the message generated by decoding the first codeword and the parity part of the second codeword generated by decoding the third codeword to generate a fou