사례분석에 의한 강구조 스타디움 레일 시스템 분류

김혜성,윤성원,Kim, Hye-Seong,Yoon, Sung-Won 한국공간구조학회 2010 한국공간구조학회지 Vol.10 No.1

국내에 설치될 강구조 스타디움에 향후 신재생에너지 중 하나인 태양광 발전을 위한 PV 시스템을 적용하는 것에 따른 강재 어레이에 관한 기초 연구로 해외의 사례를 토대로 구성되었다. 연구를 진행하기 위하여 1990년대 이후 PV 시스템이 적용된 강구조 스타디움 20건을 사례 분석 대상으로 선정하였다. 선정된 20건의 강구조 스타디움을 PV 모듈을 고정하기 위하여 설치된 레일 시스템에 따라 분류해 보았다. 그 결과 격자고정방식 중 선형모듈고정방식과 지붕 통합형이 전체의 28%에 해당되는 것으로 조사되었으며 그 뒤로 레일 고정형 17%, 세로 고정방식 중 모듈그룹 고정 11% 순으로 조사되었다. 또한 스타디움 내부에는 주로 격자 고정방식 중 선형모듈 고정방식과 지붕통합형이 적용되고 있었으며 스타디움 외부나 그 외 부분에서는 앵글 브라킷으로 PV 모듈이 고정되고 있는 것으로 조사되었다. This paper focuses on steel arrays regarding the application of PV system for solar power system, a renewable energy in steel structure stadium that will be built in Korea, by foreign case study. 20 cases of Steel Structure Stadiums applying PV system after 1990 were selected as the main subjects. The 20 cases of Steel Structure Stadiums were categorized by rail systems that were installed to fix PV module. As the result, linear clamping and roof-integrated type among cross rails were 28% of the whole, followed by 17% of rail-fixed type and 11% of module group-fixed type among vertical-fixed types. In addition, linear clamping and roof-integrated type among cross rails were applied in the inside of the stadium while the outside and other parts of stadiums used angle bracket to fix PV module.

기계적 합금화법에 의해 제조된 Al+Al3Ti합금 및 Al+10wt.%Ti합금의 고용현상

김혜성,이정일,김긍호,금동화,서동수( Hye Sung Kim,Jung Ill Lee,Gyeung Ho Kim,Dong Wha Kum,Dong Soo Shur ) 한국열처리공학회 1996 熱處理工學會誌 Vol.9 No.2

The solubility of Ti in Al matrix was determined by X-ray diffraction method on two different mechanical alloying systems, i.e Al+Al₃Ti and Al+Ti alloys. Starting powder compositions of two systems were chosen for final volume fraction of Al₃Ti phase being 25%. The solubility of Ti in α-Al was estimated by the lattice parameter measurement of Al. For Al+Al₃Ti mixture, it appeared that some of Al₃Ti particles decomposed during milling and maximum solubility of Ti in A1 was about 0.99%. The majority of Al₃Ti particles were dispersed uniformly in Al matrix, having approximate size of 100∼200㎚. On the other hand, higher Ti solubility of 1.24 wt.% was found in Al+Ti system, with starting composition of Al+10 wt.%Ti. After 15 hours of milling, Ti phase was identified as 20㎚ sized particles embedded in Al matrix. The annealing of mechanically alloyed powders from Al+Al₃Ti and Al+10 wt.%Ti systems was followed in the temperature range of 200 to 600℃ to study thermal stability of supersaturated solution of Al(Ti). After annealing, the lattice parameter of A1 reverted back to that of pure Al, and the peak intensity ratio of Al₃Ti/Al was increased more than the original value before annealing. These results suggest that Ti dissolve into alpha-Al solutions during milling, and by annealing, Do_(22)-Al₃Ti phase forms from Al(Ti) solution.

가스분사 분말로부터 고온 압출된 Al-Ni-Mm-(Cu, Fe)합금들의 미세구조 및 기계적 성질

김혜성,Kim, Hye-Sung 한국재료학회 2006 한국재료학회지 Vol.16 No.2

The effects of Cu and Fe additions on the thermal stability, microstructure and mechanical properties of $Al_{85}-Ni_{8.5}-Mm_{6.5},\;Al_{84}-Ni_{8.5}-Mm_{6.5}Cu_1,\;Al_{84}-Ni_{8.5}-M_{m6.5}Fe_1$ alloys, manufactured by gas atomization, degassing and hot-extrusion were investigated. Gas atomization, with a wide super-cooled liquid region, allowed the alloy powders to exhibit varying microstructure depending primarily on the powder size and composition. Al hotextruded alloys consisted of homogeneously-distributed fine-grained fcc-Al matrix and intermetallic compounds. A substitution of 1 at.% Al by Cu increased the thermal stability of the amorphous phase and produced alloy microstructure with smaller fcc-Al grains. On the other hand, the same substitution of 1 at.% Al by Fe decreased the stability of the amorphous phase and produced larger fcc-Al grains. The formation of intermetallic compounds such as $Al_3Ni,\;Al_{11}Ce_3\;and\;Al_{11}La_3$ was suppressed by the addition of Cu or Fe. Among the three alloys examined, the highest Vickers hardness and compressive strength were obtained for $Al_{84}-Ni_{8.5}-M_{m6.5}Cu_1$ alloy, and related to the finest fcc-Al grain size attained from increased thermal stability with Cu addition.

기계적 합금화법으로 제조된 과포정 Al-Ti합금에서 Al3Ti 형성에 관한 연구

김혜성,서동수,김긍호,금동화 ( Hye Sung Kim,Dong Soo Suhr,Gyeung Ho Kim,Dong Wha Kum ) 한국열처리공학회 1996 熱處理工學會誌 Vol.9 No.1

Mechanical alloying is an effective process to finely distribute inert dispersoids in an Al-TM(TM is a transition metal) system. It has been considered that high melting point aluminides are formed by precipitation from supersaturated Al(Ti) powder. This analysis is based on the fact that much higher content of TM than the solubioity can be dissolved in alpha aluminum during the high energy ball milling. Thus, decomposition behavior of Ti in the Al(Ti) was considered very important. But it is confirmed that the higher portion of Ti than Al(Ti) solid solution is existed as nano-sized Ti particles in the MA powders by high energy ball nilling from the XRD spectrum and TEM analysis in this study. Therefore, the role of undissolved TM particles affect the formation of aluminides should be suitably considered. In this study, we present experimental observation on the formation of Al₃Ti fron mechanical alloyed Al-Ti alloys in the hyperperitectic region. This study showed that, in the mechanically alloyed Al-20wt%Ti specimen, intermediate phase of cubic Al₃Ti and tetragonal Al_(24)Ti_8 formed at 300∼400℃ and 400∼500℃, respectively, before the MA state reaches to equilibrium at higher temperatures. The formation behavior of Ll₂-Al₃Ti is interpreted by interdiffusion of A1 and Ti in solid state based on the fact that large amount of nano-sized Ti particles exist in the milled powder. Present analysis indicated undissolved Ti particles of nanosize should have played an important role initiation the formation of Al₃Ti phase during annealing.

강구조 스타디움의 PV 접합 시스템 분석

김혜성(Kim Hye-Seong),윤성원(Yoon Sung-Won),박용(Park Yong),김민지(Kim Min-Ji) 대한건축학회 2009 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.29 No.1(구조계)

The purpose of this study is classified for constructed point of PV system in stadium though a field of steel structure stadium in foreign as well as analyzing the module joint detail of PV system classified sloping roof and another section. As a result, A number of example of using PV system in roof of steel structure stadium is 5 of 10 and example excepting for stadium is 2. also result of classifying the sloping roof and another section confirmed in 4 example of used to clamping joint detail and 2 of used to Flush-fitted system joint detail. In addition, PV fixed module method is often using a Plate than bolt of T-shape.

3D 애니메이션에 나타난 디지털 이미지의 특성 연구 -〈소울〉과 〈라야와 마지막 드래곤〉의 조형성을 중심으로-

김혜성(Kim Hye-sung),성례아(Sung Rea) 한국만화애니메이션학회 2021 만화애니메이션연구 Vol.- No.64

오늘날 애니메이션과 영화와 같은 영상은 강력한 영향력을 갖게 되었다. 특히 사람들이 실내에 머무르는 시간이 길어지고 케이블과 OTT 서비스를 통해 영상을 접하는 시간이 기하급수적으로 늘어남에 따라 그 중요성이 더욱 부각되고 있다. 그중에서도 3D 애니메이션은 컴퓨터 기술과 발전으로 일컬어지는 테크놀로지와 디지털화로 애니메이션의 조형적 특징을 완전히 변화시켰다. 따라서 이러한 이미지를 보는 주체 즉, 대중, 관객 그리고 수용자 등이 어떻게 지각하는지 또는 인지하는지가 새로운 대중문화를 이끄는 중심 체계가 되었다. 이 시점에서 디지털 이미지에 관해 알아보는 것은 매우 중요한 과제라고 여겨진다. 본 연구는 3D 애니메이션에 나타난 조형적 시각인지요소를 바탕으로 디지털 이미지의 특성을 알아보았다. 최근에 개봉하고 큰 인기를 끈 〈소울〉과 〈라야와 마지막 드래곤〉을 대상으로 집중 분석하고자 하였으며, 전문가 패널의 델파이 조사를 통하여 객관성을 높이고자 하였다. 논문에서는 조형적 시각인지요소를 형태, 색채, 질감, 명암, 공간으로 상정하고 애니메이션의 이미지를 봤을 때 즉각적으로 느끼는 지각에 대해 알아본다. 애니메이션 분석에 있어 스토리나 움직임, 그리고 사운드 등을 제외하고 판단하기는 어렵지만 포스트모던 시대의 논쟁의 중심인 이미지와 보는 주체의 관계를 중점적으로 살펴보았다. 분석 결과에 따르면 3D 애니메이션에 나타난 디지털 이미지의 대표적 특성은 극사실적 질감, 화려한 색채, 명암을 통한 입체감, 그리고 혼성적 스타일이다. 3D 애니메이션은 전통적인 애니메이션과 3D만의 독특한 양식이 융합되면서 끊임없이 변화하고 있다. 현재 3D 애니메이션은 영상문화의 패러다임을 선도하고 있으며, 이러한 연구를 통하여 조금이나마 애니메이션의 방향을 예측하며 모색해 나아가는 데 도움이 되기를 희망한다. Nowadays, visual media such as animations and movies have powerful influence. Particularly, as people stay indoors longer and watch movies through cables or OTT services much longer than before, they are regarded even more important now. Especially, animations have been completed transformed in terms of their formative characteristics on account of technology and digitalization, so-called computer technology and development. Furthermore, how the agents watching those images, who are the public, audience, and receivers, perceive or recognize them has formed a major system that leads the new popular culture. At this point, it is thought to be a very crucial task to understand the characteristics of digital images. This study has examined visual recognition elements of forms found in 3D animations basically. Particularly, this author has analyzed 〈Soul〉 and 〈Raya and the Last Dragon〉 which were released lately and caught great popularity intensively and attempted to analyze them objectively through expert panels’ Delphi research. In this thesis, form, color, texture, shading, and space was assumed as Visual Recognition Elements of Form. Therefore the perception that immediately felt when viewing an animation image was investigated. In the analysis of animation, it is difficult to judge by excluding the story, movement, and sound, but I focused on the relationship between the image and the subject that emerged in the postmodern era. According to the results, the digital images of 3D animations have diverse properties, typically the hyperreal texture, splendid colors, cubic effect realized with light and shade, and hybrid style. 3D animations are constantly changing along with convergence between traditional animations and 3D’s unique styles. Presently, 3D animations are leading the paradigm of image culture, and it is expected that this study will contribute to predicting and seeking the direction of animations any further.

3D 이미지의 사실적 재현의 시각

김혜성(Kim, Hye Sung) 한국디자인지식학회 2006 디자인지식저널 Vol.3 No.-

에이즈 예방캠페인의 메시지 프레이밍 연구

김혜성 ( Hye Sung Kim ) 대구가톨릭대학교 사회과학연구소 2015 사회과학논총 Vol.14 No.-

As This study tests the effects of message framing in the context of AIDS prevention campaigns in order to provide implications for effective campaign message strategies. Findings indicate that, individuals in the low involvement group showed more positive attitudes and better persuasion outcomes in response to the gain-frame message. However, individuals in the low involvement group showed higher ad memory in response to the loss-frame message, indicating that negative cues are more effective than positive cues in generating memory. This empirical study provides implications for effective AIDS prevention campaigns by testing the effects of print AIDS prevention ads incorporating the think-aloud method.

한국형발사체 경량화를 통한 궤도 투입성능 예측

김혜성(Hye-Sung Kim),양성민(Seong-Min Yang),오세종(Se-Jong Oh),최정열(Jeong-Yeol Choi) 한국추진공학회 2017 한국추진공학회 학술대회논문집 Vol.2017 No.5

대구광역시의 도시브랜드 이미지유형에 대한 Q 방법론 연구

김혜성 ( Hye Sung Kim ) 한국주관성연구학회 2016 주관성연구 Vol.- No.32

본 연구는 지역주민을 대상으로 한 도시브랜드 이미지유형에 대한 연구이다. 이를 위해 대구지역에 거주하는 대학생을 대상으로 Q 방법론을 활용하여 대구광역시 도시브랜드 이미지유형을 분석하였다. 분석 결과, 전통을 지향하는 도시로 인식하는 ‘전통지향 보수형’(1유형), 권위적이고 자긍심이 강한 남성 이미지를 떠올리는 ‘강인한남성형’(2유형), 역동적이며 활기찬 매력도시라고 생각하는 ‘활기찬 개방형’(3유형) 등, 세 개의 유형을 발견하였다. 그리고 각 유형별 특징과 의미를 확인하였다. 인간의 내면 인식을 분석하여 도시브랜드 정립의 준거를 제시했다는 점과, 도시브랜드 이미지 인식 유형과 도시의 미래 산업을 연계하는 틀을 제시하였다는 점에 연구의 의미가 있다. This study examined image patterns of a city``s residents about the city in which they live. In particular, using the Q-methodology, this study analyzed image patterns about the city of Daegu by recruiting college students living in Daegu. The results of this study indicate that three image patterns about Daegu emerge: the first type is characterized by ``tradition-seeking conservatives``, which perceive Daegu as a tradition-seeking city; the second type is characterized by ``strong men``, which perceive Daegu as an authoritative and proud man; and (3) the third type is characterized by an ``active and open city``, which perceives Daegu as a dynamic, active, and attractive city. Additionally, this study examines the characteristics and meaning of each image type. This study provides judgment criteria for establishing a city``s brand based on people``s perceptions and identity, and suggests an outline to connect people``s perceived image patterns of a city to the city``s future industry.