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디지털 사이니지에서 응용되는 고해상도 타임랩스 영상 제작에 관한 연구
문대혁 남서울대학교 출판국 2021 남서울대학교 논문집 Vol.27 No.-
Digital signage employs Digital Information Display technology to deliver visual information. As a convergence platform of network and display, it is aimed at display or advertising in diverse places and situations. At present, for high definition, most large digital signage content images are produced with the uses of motion graphic based imaging technique or 3D animation technique. These images face a limited range of use due to degradation. The purpose of this study is to look into the production method to apply high-definition reality images with minimum degradation to digital signage by using timelapse technique. The reality images shot in this study are expected to be screened on digital signage without degradation. Key Words : Digital Signage, Time-lapse, Multimedia Contents, VFX, Editing, Motion Picture
문대혁 남서울대학교 출판국 2022 남서울대학교 논문집 Vol.28 No.-
Multi-vision such as Digital Signage and Screen-X, having overcome the limits of a wide image, have been providing audiences with a sense of immersion as a film delivering stories through over 3-sided screen without requiring special devices. However, a number of film producers consider such multi-vision one of the difficult systems to have access to due to their stutter phenomenon, limits of stitching process and complicated system environments. In this thesis, the technical issues and characteristics related to the actualization of multi-images were examined and the optimized screen organization and directing methods were explored to propose a guideline that can be used to have convenient access to multi-vision contents for the production of high-resolution Digital Signage content. Based on the results acquired through this research, it was expected that Digital Signage systems such as multi-vision and Screen X can be recognized as a popular medium capable of providing audiences with a sense of immersion in the process of appreciating different-dimensional realistic images. Key Words : Multi-vision, Realistic Image, Panorama, Match Correction, Screen X
N-tert-Butyl-2-(1-acetoxy-2-fluoro-1-butyl) benzenesulfonamide 의 결정 및 분자구조
이재혁,김문집,김대황 순천향대학교 기초과학연구소 1997 순천향자연과학연구 논문집 Vol.3 No.1
The crystal structure of N-tert-Butyl-2-(1-acetoxy-2-fluoro-1-butyl) benzenesulfonamide has been determined from single crystal X-ray diffraction study ; C16H24FNO4S, Orthorhombic, Pbca, a=14.652(5)Å, b=18.477(2)Å, c=13.261(2)Å, α=β=γ=90°, V=3590.1(14)ų, T=296(2)K, Z=8, Mok α(λ=0.71069Å). The molecular structure was solved by direct method and refined by full-matrix least squares to a final R=5.55% for 1628 unique observed F0>4σ(F0) reflections and 208 parameters. The conformation of the molecule is stabilized by an intramolecular N(19)-H(19)...O(10) hydrogen bond.
Diethyl 1-chloro-2-phenyl-2-(tosyl) aminoethylphosphonate 의 결정 및 분자구조
김대영,이재혁,신준철,김문집 순천향대학교 기초과학연구소 1997 순천향자연과학연구 논문집 Vol.3 No.1
The crystal and molecular structure of diethyl 1-chloro-2-phenyl-2-(tosyl)aminoethyl phosphonate has been determined from single crystal X-ray diffraction study ; C19H25NO5PCIS, Monoclinic, P2₁/a, a=10.8507(11)Å, b=16.1201(12)Å, c=12.7354(12)Å, β=90.192(7)°, V=2227.6(3)ų, T=293(2)K, Z=4, Cuk α(λ=1.54178Å). The structure was solved by direct method and refined by full-matrix least squares to a final R=5.17% for 2444 unique observed F0> 4σ(F0) reflections and 254 parameters.
포스트-텐션 프리캐스트 외부 넓은 보-기둥 접합부의 비탄성 거동
박상욱,최윤철,김영찬,김대중,임재형,권기혁,문정호,이리형 대한건축학회 2003 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.23 No.2(구조계)
Experimental results from the cycle lateral load tests for post-tensioned precast wide beam-column connections were presented. Six exterior beam-column assemblages of half scale were tested in the laboratory. The specimens consist of U-shaped precast wide beams and concrete columns. The continuity at the beam-column joint is achieved with the topping concrete and post-tensioning. The specimens were designed with parameters of the beam-to-column depth ration and the number of tendons within column core. The test results showed that the post-tensioned precast wide beam-column connection satisfied the provisional standard by ACI of acceptance criteria for concrete special moment frames.
프리캐스트 포스트텐션 콘크리트 넓은 보-기둥 내부 접합부의 비탄성 거동
황재환,최윤철,김영찬,김대중,임재형,권기혁,문정호,이리형 대한건축학회 2003 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.23 No.2(구조계)
The purpose of this paper is to evaluate the response of Precast Prestressed Concrete Interior Wide Beam-Column Joint subjected to cyclic lateral loading. To this end, the experimental investigation was performed with six half-scale specimens of interior connection. The design parameters are the beam to column depth ratio, and the number of tendons within column core. One of the specimens, IJH-6, is modeled for the connection at the top floor of a structure. The test results showed that the specimens sufficiently resist up to limiting drift ratio of 0.035 in accordance with the provisional standard by ACI of acceptance criteria for concrete special moment frames.