• Journal of Aerospace System Engineering
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• v.11 no.4
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• pp.30-35
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• 2017

In this work, a manufacturing and structural test of 1kW class horizontal axis wind turbine blade using natural-fiber composite was performed. The aerodynamic design of blade was performed after investigation on design requirement. The structural design load was investigated after aerodynamic design of blade. And also, structural design of blade was carried out. The structural design of blade was carried out using the simplified methods such as the netting rule and the rule of mixture applied to composite. The structural safety of the designed blade structure is investigated through the various load cases, stress, deformation and buckling analyses using the FEM method. Finally, the blade manufacturing and structural test using natural composite was carried out.

• Asia-pacific Journal of Multimedia Services Convergent with Art, Humanities, and Sociology
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• v.6 no.3
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• pp.19-31
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• 2016

Game Trailer plays the role of main marketing for promotion of game. Recently, the characteristic can be summarized as storytelling, graphics method, production technology, and game mechanics of 3D Game Trailer. Online game was produced as cinematic trailer in the beginning, but recently, in-game trailer has been produced as machinima production method for users. This method reveals functions, various contents, and graphics related to the game through trailer, and it is useful in giving information and curiosity related to the game. Machinima composes background and characters in a short period of time online due to recent 3D CG methods, and only dubbing needs to be proceeded. This saves production fee and production period, and it also has the advantage of having multi-story. Game trailer Thanatos is a video developed through machinima production method. This paper proposes production process and the importance of the key components of the whole project through the above four aspects to be used in the actual production stage by intuitively apply and analysis.

• Communications of the Korean Institute of Information Scientists and Engineers
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• v.20 no.5
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• pp.10-16
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• 2002

디지털 기술의 급속한 발전에 의한 디지털 방송의 도입은 방송환경에 커다란 변혁을 초래하고 있다. 기술의 발전은 방송, 통신, 컴퓨터를 융합시킨 새로운 미디어 서비스를 등장시키고 있으며, 이러한 미디어의 융합은 지금까지 독자적인 영역에서 발전하여 오던 각각의 미디어들이 가지고 있는 한계성 또는 단점을 상호보완적으로 개선함으로써 서비스 능력을 대폭적으로 향상시키는 방향으로 전개되고 있다. 이와같은 디지털 시대의 대변혁은 멀티미디어 서비스를 그 중심축으로 하고 있으며, 이른바 방송통신 융합시대의 경쟁력 있는 서비스를 도입하기 위한 미디어간, 국가간의 경계영역을 초월한 글로벌 경쟁체제가 급속히 진전되어 가고 있다. 이와 같은 미디어의 융합 현상에 따라 제작 환경도 새로운 디지털 방송 서비스를 효율적으로 지원하도록 전환되어야 한다. 디지털 방송의 특징인 고품질 및 다채널 시대를 맞아 방송 콘텐츠의 재활용도를 높이는 것은 매우 중요하며, 데이터 방송, 인터넷 방송 등 다양한 기능의 서비스를 도입하기 위해선 제작 체계의 개선이 뒷받침되어야 한다. 따라서 본 논문에서는 새로운 제작 환경에 대해서 살펴보고자 한다. 특히, 컴퓨터 기반의 제작 환경 구축에 핵심 요소인 넌리니어 편집시스템과 방송 콘텐츠를 효율적으로 관리하고 재활용할 수 있는 디지털 아카이브에 대해 소개하고자 한다. 테이프 대신 하드디스크를 기록 매체로 하는 넌리니어(non-linear) 시스템의 등장에 따라 방송 프로그램 제작에 대한 새로운 개념의 정립이 필요하게 되었으며, 이를 근간으로 하는 새로운 프로그램 제작환경, 즉 네트워크에 의해 컴퓨터와 데이터베이스를 연결하여 제작으로부터 송출가지 통합관리가 가능한 새로운 방송 프로그램 제작환경, 이른바 멀티미디어 제작환경을 구축하는 것이 디지털 방송 시대의 방송 사업자에게 가장 중요한 과제중의 하나가 되었다. 멀티미디어 제작환경을 구축함으로써 영상, 음성 및 다양한 부가 데이터를 포함하는 멀티미디어 프로그램을 편리하게 제작할 수 있으며, 데이터베이스로부터 필요한 영상 이미지를 자유롭게 합성, 조작하는 등, 매우 다양하고 편리한 제작기법을 활용할 수 있다. 또한 멀티미디어를 응용한 제작 분야로서 컴퓨터 그래픽스 기술은 방송의 사전제작에 커다란 기여를 하고 있으며, 이미 선거방송을 비롯한 여러가지 프로그램은 가상스튜디오와 가상캐릭터 기술을 활용하여 제작하고 있다. 방송사업자는 이러한 멀티미디어 제작시스템을 근간으로 영상검색, 영상 합성, 스크립트 편집, 가상현실 응용 등 고도의 제작 기법을 활용함으로써 사용자 친화성, 다이나믹한 표현, 실시간, 대화성을 특징으로 하는 다양한 멀티미디어 서비스를 시청자에게 제공할 수 있을 것이다.

• Journal of Korea Multimedia Society
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• v.17 no.2
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• pp.257-265
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• 2014

3 dimensional stereoscopic is attracting new attention as it simulates human eye and related hardware advances. However, 3 dimensional stereoscopic requires more time and effort than 2D movie because it uses 2 cameras or 2 lenses. This study analyzed the merits and demerits of the system producing rider movie using 3 dimensional stereoscopic shooting techniques and searched a way to produce better 3 dimensional stereoscopic rider movie which meets the producing intention by applying elements required to create effective 3 dimensional stereoscopic effect. According to the study result, a light-weight integrated system was effective to create 3 dimensional stereoscopic rider movie because of its genre characteristic. In the post-production of the work, location shooting considered of time re-mapping, color correction and graphic element addition was required.

• Journal of Conservation Science
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• v.7 no.1
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• pp.1-8
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• 1998

The production techniques of a gilt-bronze buckle which was presumably a product of the Koryo dynasty were investigated. The X-ray area map indicates that the gilt layer was made by gilt-bronze method. EDS analysis shows that the gilt layer contains copper as well as gold. The microstructure of a textile adhered to the back of the buckle reveals that the material is woven hemp. Triangular and semicircular chisels were used to engrave patterns. After the boundaries of the patterns were engraved with triangular chisels the internal regions were carved with semicircular patterns. The procedure and the shape of the chisels were also investigated.

• Journal of Conservation Science
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• v.36 no.6
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• pp.440-455
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• 2020

This study aims to examine the material characteristics of bowls and compare the making techniques of flat cup with cover and jar coffin from the Oryang-dong kiln site, Naju. Bowls, the most frequently excavated small pottery have similar material characteristics, including gray surface, fine-grained texture, and small-sized tempers such as quartz and feldspar, regardless of the excavation slopes. However, the firing temperature of the bowls mostly ranges from 950 to 1,100 ℃. It is estimated that the bowls had formalized making techniques, owing to the similar material composition and firing technique regardless of the excavation slope. The flat cups with cover have similar texture and mineral phases, except their poorly sorted inclusions. However, the jar coffins contain not only fine-grained minerals but also medium-grained quartz, feldspar, and biotite, showing a relatively wide range of firing temperatures. According to the geochemical results of pottery by type, it is assumed that chemical compositions are classified into two groups: small pottery(bowl and falt cup with cover) and jar coffins. In conclusion, small potteries such as bowls and flat cups with cover were made by removing the heavy minerals from raw materials, whereas jar coffins were made by adding medium-grained minerals to raw materials to maintain and support their structures, despite the same source materials. In addition, it is presumed that pottery making proceeded by selecting the source materials, preparing according to their use and controlling the firing temperature and environment.

• Conservation Science in Museum
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• v.20
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• pp.1-12
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• 2018

In February 1986, a high-school student reported the discovery of fragments of gilt-bronze burial goods on a mountainside behind a village in Ipjeom-ri, Ungpo-myeon in Iksan. The National Research Institute of Cultural Heritage immediately undertook an excavation. Unfortunately, gilt-bronze relics including a band and vertical decorations for a crown, a hat, and shoes had already been collected from Ipjeom-ri Tomb 1 by the student who found them before they could be properly excavated. Also, the interior of the stone chamber of the tomb had been severely disturbed by the time of excavation, making it difficult to identify the precise original locations of the relics within the tomb and hindering the reassembly of the fragments of the gilt-bronze crown. After conservation treatment, the gilt-bronze hat, shoes, and other relics were restored to their original forms and researchers were able to identify incised designs of a three-legged bonghwang(鳳凰), fish scales, lotus flowers, and other motifs. This study presents the major features of the fragments of gilt-bronze relics from Ipjeom-ri Tomb 1 and the methods of their production in order to provide basic material for their restoration and allow the eventual restoration of the giltbronze crown to its original condition.

• Journal of Conservation Science
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• v.26 no.4
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• pp.417-427
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• 2010

This study is to examine the manufacturing technique based on scientific investigation and analysis on Steel-Plated Jewel Beetle's Adornment gilt-bronze openwork remains excavated from No. 100 site at Hwango-dong Gyeongju. As a result of the investigation on the manufacturing revealed that riveting was adopted to connect gilt-bronze openwork plates and steel plates, followed by mercury amalgam plating method and carving of the patterns by means of the dotted line engraving technique. There were some traces on the surface of Jewel Beetle wings that show the use of pins for fixing, which seems to be the result of recycling or processing. The sectional analysis shows the high possibilities that varnishing with lacquer was adopted for wing adhesion, and it was confirmed that varnishing with lacquer was used on the strap pendant plate to prevent corrosion.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.19 no.12
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• pp.25-31
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• 2018

Selective Laser Melting is one of the representative 3D printing techniques for handling metal materials. The main factors influencing the characteristics of structures fabricated by the SLM method include the build-up angle of structures, laser power, laser scan speed, and scan spacing. In this study, the tensile properties of AlSi10Mg alloys were investigated by considering the build-up angle of tensile test specimens, laser scanning speed and scan spacing as variables. The yield stress, tensile strength, and elongation were considered as tensile properties. From the test results, it was confirmed that the yield stress values were lowered in the order of 0, 45, and 90 based on the manufacturing direction of the tensile specimen. The maximum yield stress value was obtained at 1870 mm / min based on the laser scan speed. The yield stress size decreased with decreasing scan speed. Based on the laser scan spacing, as the value increases, the yield stress increases, but the variation is smaller than the other test criteria. The tendency of the tensile strength and elongation variation depending on the test conditions was difficult to understand.

• 한국정보교육학회:학술대회논문집
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• 2008.01a
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• pp.251-256
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• 2008

e-Learning은 시 공간의 제약 없이 교수자와 학습자간의 교육이 이루어진다는 장점이 있는 반면, 다양한 학습자의 요구를 만족시킬 만큼 충분한 학습 콘텐츠의 제작이 어렵다는 단점이 있다. 이러한 단점을 해결하기 위해 ADL(Advanced Distributed Learning)의 SCORM(Sharable Content Object Reference Modeling)의 표준에 따라 e-Learning의 학습 콘텐츠를 학습객체(Learning Object)로 제작하고, 이를 SCORM의 표준을 지원하는 LCMS(Learning Content Management System)를 이용하여 관리하려는 연구가 진행되고 있다. LCMS를 이용할 경우 학습 콘텐츠의 제사용성을 높이므로 학습 콘텐츠의 제작 및 관리가 무척 용이해진다는 장점이 있는 반면 탈맥락화된 학습 콘텐츠를 제작하기는 매우 어렵다는 단점을 가진다. 본 연구에서는 이러한 문제점을 해결하기 위해 버전관리 기법을 이용한 탈맥락화된 학습 콘텐츠에 대한 제작이 용이한 시스템을 연구했다.