Abstract: An image-based hand detection apparatus includes a hand image detection unit for detecting a hand image corresponding to a shape of a hand clenched to form a fist from an image input. A feature point extraction unit extracts feature points from an area, having lower brightness than a reference value, in the detected hand image. An image rotation unit compares the feature points of the detected hand image with feature points of hand images stored in a hand image storage unit, and rotates the detected hand image or the stored hand images. A matching unit compares the detected hand image with the stored hand images and generates a result of the comparison. If at least one of the stored hand images is matched with the detected hand image, a hand shape recognition unit selects the at least one of the stored hand images as a matching hand image.

Abstract: Provided is a method of generating and detecting a preamble that may significantly increase accuracy of frame synchronization while avoiding a low frequency domain having great noise power and minimizing hardware complexity and power consumption in a communication system of a digital direct transmission scheme applicable to human body communication. A method of generating a preamble according to an exemplary embodiment of the present disclosure includes: generating a first pseudo noise code and a second pseudo noise code that are different from each other; generating a plurality of same first sub preambles by line-coding the first pseudo noise code; and generating a second sub preamble behind the plurality of first sub preambles by line-coding the second pseudo noise code.

Abstract: An order-preserving encryption apparatus includes an initializer for setting a total space of a ciphertext with respect to a total space of a plaintext by considering security of the ciphertext, and setting a secret key for encryption and a pseudo-random number generator for generation of a pivot. Further, the order-preserving encryption apparatus includes a pivot generator for applying the secret key to the established pseudo-random number generator to generate a pivot for the plaintext to be encrypted. Further, the order-preserving encryption apparatus includes a ciphertext generator for generating information about size of a bit constituting the ciphertext by comparing the generated pivot and the plaintext; and a plaintext adjusting unit for adjusting a magnitude of the total plaintext space and a magnitude of the plaintext according to the ciphertext.

Abstract: An authorization management apparatus and method in a software-as-a-service (SaaS) platform is disclosed. The present invention provides an automated authorization management apparatus and method which can efficiently reduce errors by applying a basic authority of a virtual tenant, which is predefined for an application to be provided to a tenant, as it is to the tenant requesting the use of the application. Moreover, the present invention provides an authorization management apparatus and method which can provide services customized to various tenants by defining a role appropriate for the condition of each tenant and allocating an application resource for each role. The authorization management apparatus includes a user application access control device, an access control device for a user's resource, a virtual tenant authority definition device, and a tenant authority definition device.

Abstract: Provided are a method of manufacturing a semiconductor nanowire sensor device and a semiconductor nanowire sensor device manufactured according to the method. The method includes preparing a first conductive type single crystal semiconductor substrate, forming a line-shaped first conductive type single crystal pattern from the first conductive type single crystal semiconductor substrate, forming second conductive type epitaxial patterns on both sidewalls of the first conductive type single crystal pattern, and forming source and drain electrodes at both ends of the second conductive type epitaxial patterns.

Abstract: Provided is a method of manufacturing a V2O3 thin film having an abrupt MIT characteristic. The method forms a thin film of one of VO2 and V3O7 on a substrate. Then the substrate on which thin film is formed is mounted in a chamber in which a reduction atmosphere capable of removing oxygen is formed, and annealed to form a V2O3 thin film having an abrupt MIT.

Abstract: A spatial switch of a simple structure using a "M.times.N" optical beam steering device which operates with M "1.times.N" spatial switches using a phased optical waveguide array. The spatial switch using an optical beam steering device in accordance with the present invention is characterized in that the optical beam steering device includes an optical waveguide phase modulator array, the optical beam steering device is used as a "1.times.N" spatial switch device, and M units of the "1.times.N" spatial switch device are aligned in parallel so that a "M.times.N" spatial switching operation is performed on a plane where a far field diffraction pattern of the "1.times.N" spatial switch device is formed. The spatial switch utilizes the characteristics that if the propagation directions of the lights output from "1.times.N" switches coincide with each other, the far field diffraction patterns formed by the switches converge into the same point.

Abstract: An nB2P coding/decoding device having a line code function facilitating data transmission and data recovery in the transmission line or link, and a function of a channel code for detecting errors in the recovered data, is provided, including: an nB2P coding device for dividing n bit width parallel data into two data units each having a predetermined bit width, and serial-transmitting the resulting n+2 bit coded data to which two odd parity bits are added, with predetermined n+2 bit with block synchronization data which is orthogonal to the coded data; and an nB2P decoding device for detecting the block synchronization data from the serially transmitted data, converts serial data to parallel form of n+2 bits, checking for errors in the coded data using the odd parity, and removing the odd parity to decode them into the original n bit width parallel data.