Abstract: A method of modulating an optical camera communication (OCC) signal by an OCC transmission node in an OCC system includes acquiring a binary data signal, grouping the binary data signal for every k bits to convert the binary data signal into a global phase shift signal having an integer value from 0 to M?1 (=2k?1), generating a data signal group by mapping the global phase shift signal to first to Mth mapping sequences in the form of an n*M/2-bit sequence based on a preset symbol group mapping table, generating a pulse wave signal by modulating the data signal group, and blinking each of a plurality of light sources included in the OCC transmission node according to the pulse wave signal. Accordingly, performance of the communication system may be improved.

Abstract: The present invention provides methods and systems for the verification of industrial plant procedures on their compliance to writing manuals. Specific guidelines described in a procedure writing manual are aimed to improve human performance quality of plant personnel. The present invention extracts all significant syntactic and semantic information from procedure documents and verifies each sentence (or phrase) in procedures whether it conforms to all guidelines of the regulated procedure writing manual, utilizing the extracted information. Therefore, the present invention provides procedures free from human error traps to fundamentally prevent an incident incurred from a human error, for the safe and efficient operation of industrial plants.

Abstract: A sheet conveying device includes: a main body; a cover; a first roller; and a second roller. The main body defines a conveying passage along which a sheet is conveyed. The cover is supported to the main body and movable between a closed position in which the cover covers the main body from above and an open position in which the cover is moved upward from the main body so as to be spaced away from the main body. The first roller is rotatably supported to the cover and configured to discharge the sheet from the conveying passage to an outside of the main body. The second roller is rotatably supported to the main body and disposed in confrontation with the first roller while interposing the conveying passage between the first roller and the second roller when the cover is at the closed position.

Abstract: A sheet conveying device includes: a main body; a cover; a first roller; and a second roller. The main body defines a conveying passage along which a sheet is conveyed. The cover is supported to the main body and movable between a closed position in which the cover covers the main body from above and an open position in which the cover is moved upward from the main body so as to be spaced away from the main body. The first roller is rotatably supported to the cover and configured to discharge the sheet from the conveying passage to an outside of the main body. The second roller is rotatably supported to the main body and disposed in confrontation with the first roller while interposing the conveying passage between the first roller and the second roller when the cover is at the closed position.

Abstract: The invention features a polynucleotide vaccine modified to enhance expression of the encoded antigen in host cells. The polynucleotide vaccine comprises an antigen-encoding nucleic acid sequence derived from a non-host species of a first phylum or first kingdom, wherein the native signal sequence of the antigen coding sequence is deleted and, optionally, replaced with a signal sequence of a polypeptide of a second phylum or a second kingdom that is functional in the host to be immunized (e.g., a viral signal sequence with a plant antigen-encoding sequence). In one embodiment, the signal sequence is a hemagglutinin A (HA) signal sequence, and the antigen is an allergen (e.g., plant allergen) or from a pathogen (e.g., a bacterium, virus or parasite). The polynucleotide vaccine of the invention provides a synergistic effect with an immunostimulatory sequence (ISS) adjuvant to not only maintain, but to enhance, the immune response to the encoded antigen.