Misorientation Characteristics at the Growth Front of Abnormally-Growing Goss Grains in Fe–3%Si Steel

Tae‑Young Kim,Tae‑Wook Na,Hyung‑Seok Shim,Yong‑Keun Ahn,Yong‑Kwon Jeong,Heung Nam Han,Nong‑Moon Hwang 대한금속·재료학회 2021 METALS AND MATERIALS International Vol.27 No.12

Penetrating morphologies at the growth front of abnormally-growing Goss grains in Fe–3%Si steel was examined in view ofthe possibility that they are the two-dimensional section of the solid-state wetting (SSW) along the triple junction line. Toobtain the statistically meaningful data, 102 penetrated grain and 204 penetrating abnormally-growing Goss grain morphologieswere examined. The misorientation angles of penetrating and penetrated grains were measured by electron backscattereddiffraction. Among the 102 examined penetrated grain boundaries, none has low misorientation angles less than 15°,whereas 17.2% of the 204 penetrating grain boundaries have low misorientation angles, and 23.5% of them have coincidencesite lattice boundaries. Besides, boundary energies of penetrating Goss grains, which were estimated from misorientationangles of the three grains in the penetrating morphology, satisfied the energetic condition for SSW along the triple junctionline. These results imply that the abnormal grain growth of Goss grains in Fe–3%Si steel occurs by the mechanism of subboundaryenhanced SSW.

Effect of Asymmetric Hot Rolling on the Texture Evolution of Fe–3%Si Steel

Tae‑Wook Na,Hyung‑Ki Park,박창수,Hyung‑Don Joo,Jong‑Tae Park,Heung Nam Han,Nong‑Moon Hwang 대한금속·재료학회 2018 METALS AND MATERIALS International Vol.24 No.6

In Fe–3%Si steel, the hot rolling process affects not only the hot rolling texture but also the primary recrystallization texture. Here, the effect of asymmetric hot rolling was studied by comparing the difference in the texture evolved between asymmetricand symmetric hot rolling. The effect of asymmetric hot rolling on the texture of primary recrystallized Fe–3%Si steel wasalso studied. The symmetric hot rolling of Fe–3%Si steel produces a rotated cube texture at the center but Goss and coppertextures near the surface. Asymmetric hot rolling tends to produce Goss and copper textures even at the center like thetexture near the surface. After primary recrystallization, the dominant texture at the center changes from {001} <210> to{111} <112> and the new texture has a higher fraction of the grains which make the low energy boundary with Goss grainsthan that of symmetric hot rolling.

Optimization of the Beam Parameters in a Time-Dependent Free-Electron Laser

NAM*, Soon-Kwon,KIM, Tae Hoon Korean Physical Society 2018 New Physics: Sae Mulli Vol.68 No.10

웹툰에 드러난 남성 동성사회성(homosociality) 양상 : 박태준 작가의 작품을 중심으로

남미자(Nam, Mi-Ja),박성태(Park, Seong-Tae),임세원(Lim, Sewon) 한국교육사회학회 2022 교육사회학연구 Vol.32 No.1

이 연구는 박태준의 네이버 연재 웹툰 싸움독학 (2019.11.15~현재)과 한남동 케이하우스 (2018.12.6~2019.10.31.)에 나타난 남성 동성사회성이 어떻게 드러나는가를 분석하는 것이 목적이다. 최근 남성 청소년의 백래시와 반페미니즘 정서가 확산되고 있는 가운데, 남성 청소년에게 영향력 있는 웹툰 분석은 향후 남성 청소년을 이해하는 데 의미있는 자료가 될 것이다. 두 작품의 분석을 통해 확인한 남성동성사회성 양상은 다음과 같다. 첫째, 남성의 성장은 ‘아직’ 남자가 아닌 자들이 ‘진짜’ 남성들에게 인정받고, 둘째, 인기 있는 여성을 소유하여 성적 주체가 되며, 셋째, 이 과정에서 호모포비아와 여성혐오를 동반하는 것으로 의미화 된다. 이것이 남성의 성장이라고 인식할 때 청소년들은 지속적으로 자신을, 그리고 여성을 혐오할 수밖에 없게 된다. 이러한 분석을 토대로 본 연구는 젠더 교육과 연구의 지형의 변화와 확장을 제안한다. 여성 청소년뿐 아니라 남성 청소년 역시 하나의 젠더 범주로 묶일 수 없는 다층적이고 교차적이기 때문에, 젠더 연구와 교육에서 여성과 남성의 이분법적 시각을 벗어날 필요가 있다. The purpose of this study is to analyze how the male homosociality is revealed in the webtoons written by Park, Tae-joon. Amid the recent spread of backlash and anti-feminist sentiment among male adolescents, webtoon analysis that is influential to male adolescents will be meaningful data for understanding male adolescents in the future. The male homosocial aspects confirmed through the analysis of the two works are as follows. First, the growth of men is recognized by not yet men, and secondly, they become sexual subjects by owning popular women, and thirdly, it is meant to be accompanied by homophobia and misogyny in the process. When recognizing that this ismale growth, adolescents have no choice but to constantly hate themselves and women. Based on this analysis, this study proposes changes and expansion of the topography of gender education and research. Since not only female adolescents but also male adolescents are multi-layered and cross-sectional that cannot be grouped into one gender category, it is necessary to deviate from the dichotomy perspective of women and men in gender research and education.

불규칙한 풍하중을 받는 현수교의 동력학적 해석

김종인(Jong In Kim),김태남(Tae Nam Kim),이용재(Yong Jae Nam) 한국강구조학회 1990 韓國鋼構造學會誌 Vol.2 No.2

Stochastic dynamic analysis of suspension bridge subject to random wind loads were carried out by mode-displacement method and mode-acceleration method. The computed dynamic characteristics are vertical and torsional vibrations of NAM-HAE BRIDGE. From numerical results, it was found that mode-acceleration method, which formulated in this paper, was more reliable and economical than mode-displacement method.

사업장(事業場) 근로자(勤勞者)의 사상체질(四象體質)에 따른 생활습관(生活習慣), 자각증상(自覺症狀), 건강인식(健康認識)에 관(關)한 연구(硏究)

서명효,강홍구,장두섭,왕명자,차남현,김삼태,권소희,정해경,송용선,이기남,Seo Muoung-Hoy,Kang Hong-Goo,Jahng Doo-Sub,Wang Myoung-Ja,Cha Nam-Hyun,Kim Sam-Tae,Kwon So-Hee,Jung Hae-Kyoung,Song Yung-Sun,Lee Ki-Nam 대한예방한의학회 2003 대한예방한의학회지 Vol.7 No.2

The study was conducted to evaluate the difference of life style, subjective symptoms and health cognition depending on the Sasang Constitution in the industrial workers. The results were as follows ; Constitutional distribution among exposed group were Tae-eum In(38.4%), So-eum In(35.2%), and So-yang In(26.4%) and it was turned out that Tae-eum In took a higher portion of Sasang constitution than other constitutions in technician workers. 'Exercise' and 'Obesity' were found most in Tae-eum In, In So-eum In there were many 'Normal' weight and 'Having digestive disorders' were found most in So-eum In. There were no significant difference in the health cognition among the constitutions. The closer to 'normal' weight, the higher prevalence in 'having' concern about health condition and the more 'normal' condition in sleeping, the higher prevalence of 'having' self-confident in present health.

계수(桂樹)/계피(桂皮)/육계(肉桂)

남대극 숲과 문화 연구회 2002 숲과 문화 Vol.11 No.3

가속수명실험을 이용한 케이블 절연재료의 수명특성에 관한 연구

남창우,이규철,박홍태,이태식,김경석 울산대학교 1997 공학연구논문집 Vol.28 No.1

본 연구는 고체절연재료의 수명예측의 일환으로서 가속수명실험을 통해 얻은 수명데이터의 통계학적 처리방법과 복합 스트레스와 수명과의 상호관계를 규명하기 위한 수명모델을 제시하고 있다. 가속수명실험을 통해 얻는 수명데이터는 와이블분포에 적용하고, 최소자승법과 최우추정법을 이용하여 와이블분포함수의 모수를 추정하였다. 또한 제시된 수명모델의 상수를 추정하여 복합스트레스와의 관계를 규명함으로써 수명모델의 타당성을 입증하였다. 추정결과, 주위온도와 인가전압이 상승함에 따라 수명은 현저히 짧아지고, 수명모델의 상수는 복합스트레스에 크게 의존하는 것으로 나타난다. 따라서 본 연구에서 제시된 수명모델은 고체절연재료의 수명을 나타내는데 적당한 것으로 나타났다. This paper suggests the statistic method for a lifetime estimation of solid insulating materials using the data obtained from accelerated aging test has been performed to obtain the lifetime data. The multi-stress including thermal and electrical stress has been applied to accelerate the degradation of insulating materials. The Weibull Cumulative Distribution Function has been used to treat statistically the lifetime data. Using the lifetime model of this study, we estimated the lifetime constants to show the relationship between the lifetime and the applied multi-stress. It has been shown that the lifetime model agrees well with the lifetime of solid insulating materials.

금수봉과 장태산 일대의 식생 군락에 따른 조류상

남동하,김정수,구태회 경희대학교 환경연구소 2001 環境硏究 論文集 Vol.10 No.-

This study is to investigate the diversity of the birds and avifauna in and around Mt. Kumsoo and Mt. Jangtae with focusing on forest type. Mt. Kumsoo consists mainly of natural forest, whereas man-made plantations were found in Mt. Jangtae. Bird diversity was evaluated according to the richness of species. Species richness was higher in Quercus mongolica, Q. variabilis, and Q. serrata-Q. variabilis communities than in Metasequoia glyptostroboides and Picea abies communities, and higher in Castanea crenata, P. koraiensis, Eucommia ulmoides, and P. densiflora communities than in Q. acutissima and Pinus densiflora communities. Nine species of bird discovered in communities of Q. mongolica, Q. variabilis, and Q. serrata-Q. variabilis were not found in M. glyptostroboides and P. abies communities; one species was found in M. glyptostroboides and P. abies communities but not in Q. mongolica, Q. variabilis, and Q. serrata-Q. variabilis communities, and fourteen species were present in all flora. Difference in habitat-use is important because the effect of reforestation on the avian diversity should not be examined only according to forest type, but also should examine the proportion of plantation in each area.

DDC 21판의 개정내용과 그 특성분석

남태우 한국문헌정보학회 1996 한국문헌정보학회지 Vol.30 No.4

DDC 120년 역사 중 가장 혁신적으로 탄생한 것은 1996년 7월에 발행된 제 21판이다. 21판은 미래 판을 위한 준비뿐만 아니라 현재판에도 지식구조에 적합하도록 고려하였다. 21판에서는 350-354 행정학, 370 교육학 그리고 560-590 생명과학 분야가 집중적 또는 포괄적으로 개정되었다. 특히 21판의 주요 특징은 이용자의 편의성에 주안을 두었으며, 많은 부분의 조정, 기호법에서의 다양한 패싯의 적용, 전문용어의 쇄신, 국제적 요구의 수용 및 협력개발의 강화 그리고 데이터베이스에서의 변화 등이 두두러진 특징이며 전자배포도 주요 변화 중 하나이다. 특히 21판은 인쇄본과 CD-ROM 윈도우판의 두 개의 포맷을 가지고 탄생하여 온라인환경에 대처하도록 구현하였다 The purpose of this study is to analyze the edition of 21 of the Dewey Decimal Classification. Edition 21 includes major revisions of three schedules: 350-354 Public administration, 370 Education, and 560-590 Life sciences. The aim of Edition 21 was user convenience, Regularization, Faceting, Terminology, International needs and Cooperative development, and Changes in the database. The Dewey Decimal Classification is preparing for the future in a number of ways. Editorial work is supported by a UNIX-based system and access to online bibliographic databases. Two edition of Electronic Dewey have been published and a Windows version have been published