Microstructure and properties of cross-roll rolled and heat treated metastable TiNbSn alloy.

Jung, Taek-Kyun,Choi, Ho-Joon,Kim, Kyung-Taek,Shin, Young-Chul,Lee, Hyo-Soo,Lim, Sung-Chul,Kwon, Hyouk-Chon,Hanada, Shuji American Scientific Publishers 2014 Journal of nanoscience and nanotechnology Vol.14 No.10

<P>A (Ti-35mass%Nb)-4mass%Sn alloy was cross-roll rolled with a reduction ratio of 70% in which the roll axes are tilted by 5 degrees away from the transverse direction of the rolled sample and then aged at 250 degrees C for 2 h. Cross-roll rolling was found to increase yield strength and Young's modulus, simultaneously. Yield strength was higher in cross-roll rolled than in conventionally rolled at same reduction ratio. Yield and tensile strength further increased by a low temperature ageing by ψ precipitation hardening and microstructure refinement. Yield and tensile strength of the aged 70% cross-roll rolled sample were higher than those of the aged 70% conventionally rolled one.</P>

Chimera 격자기법을 이용한 효율적 유동해석

임영택,오동훈,김문상 한국항공대학교 항공우주산업기술연구소 2002 航空宇宙産業技術硏究所 硏究誌 Vol.12 No.-

전산유체역학의 발전과 더불어 복잡한 유동장을 해석하기 위한 격자의 형성이 주요한 문제로 떠올랐다. 격자형성에 드는 노력을 줄이기 위해서 여러 방법들이 제안되어 왔으며, 그 중 Chimera 격자 기법은 각각의 물체에 대해 독립적인 격자를 형성할 수 있어 서로 상대운동이 있는 유동장이나 복잡한 형태의 유동장을 해석하는데 적합한 것으로 알려져 있다. 하지만, 유동정보의 전달에 있어서 유동 지배방정식이 아닌 내삽법을 사용하기 때문에 유동구매가 큰 영역의 하나인 충격파가 발생하는 유동장에서는 충격파 주위에 격자를 형성하는데 신중을 기해야 한다. 본 연구는 Chimera 격자계의 장점과 단점들에 대해서 자세히 살펴보고자 한다. 본 연구를 위해서 Chimera 격자기법이 적용된 2차원 Navier-Stokes 프로그램을 개발하였으며 대류항은 AUSM 풍상차분법을, 확산항은 중심차분법을 사용하여 플럭스를 계산하였다. Grid generation techniques become very important issues with development of computational fluid dynamics. Many technologies are introduced to reduce efforts in grid generation. Among of these, Chimera grid is very useful tool and has many advantages in analyzing the relative flow motion or complex flow fields, because it can easily generate independent grid structure into the base grid structures. However, it may have some defects because this method uses approximate interpolation technique to give and take flow informations between sub and main grid structures. Therefore some cautions are necessary during grid generation process in the vicinity of large flow gradient regions such as shock waves. A two-dimensional Navier-Stokes solver is developed to investigate the good side and bad side of Chimera grid. This solver hires AUSM upwind scheme to calculate the convection fluxes and central scheme to calculate the diffusion fluxes.

은준관의 교육신학사상 이해 : 학문적 발전을 중심으로

임영택 연세대학교 신과대학 1999 신학논단 Vol.26 No.-

기독교교육과 문화의 대화

임영택 한국기독교교육정보학회 2003 기독교교육정보 Vol.7 No.-

The purpose of this study is to explore an cultural approach to Christian education. It is my intent to construct a theoretical alternative model of education for Christian democratic citizenship that becomes a border crossing among the community of faith, society, and the world. This is theological, critical, and cultural work in the current community of faith. This work is guided by critical-cultual studies with Henry A. Giroux and the theological underpinning of Wesley and Minjung theology. In educational approach, critical-cultural pedagogy seeks an ethical imperative and emphasizes the need for both individual empowerment and social transformation. Education as cultural politics is linked to the issues of cultural differences in attempt to expand dialogue and develop democratic public life. As a theological sounding, Korean Minjung theology deals with philosophy of Dan as the resolution of Han. Dan signifies personal and social transformation. Dan also is linked with Wesley's doctrine of sanctification which requires a gradual process of social transformation as well as personal empowerment. Through an interactive dialogue of the theological and educational approaches, I suggested five educational structures and their implications in Christian cultural pedagogy. Transformative learning of the community of faith focused on the development of Christian democratic citizenship. Learners as critical partnership make and promote themselves as subjects in the world and history. Teachers as transformative intellectuals allow critical and dialogical relationships with learners in the community of faith. As a democratic sphere, the community of faith needs to be a hospitable space. It will be connected with the caring presence, communal life, and the vision global community. The community of faith can produce the Christians who can be open to God's partnership and to the difference in the world. Christian cultural pedagogy needs to use the methods of critique and possibility. The language of critique is not concerned with the question of what and how, but with why in critical consciousness. The language of possibility leads to the reconciliation of broken relationships, spirituality and hope in life. In conclusion, Korean society is being transformed into new society. The cultural approaches to Christian education requires praxis that works with the Korean mind, culture, and history. This educational approaches also can be applied to the issues of class, gender, geography, and religion in the Korean context.

《祖堂集》 中的組合式述補結構

林永澤 한국중국문화학회 2002 中國學論叢 Vol.13 No.-

唐五代는 漢語語法史상 매우 중요한 시기로 간주되며, 특히 이 시기의 불교 禪宗어록인〈祖堂集〉은 언어특성상 口語적 요소가 상당히 풍부하여 한어어법연구에 빼놓을 수 없는 매우 귀중한 자료로 평가받고 있다. 본 논문은 특히 현재 중국 어법하계에서 가장 쟁론이 많은 화두로 부각되고 있는 述補構造를 〈祖堂集〉이라는 言語史적 지표를 가지고 가늠해 보았다. 本論文은 述補構造 중 사용빈도가 매우 높고 또한 다양한 구조를 가지고 있는 "得" 字句 組合式述補構造를 다루었으며, 서두에서는 우선 語素 "得"의 의미특성과 역사적 변화에 대해 살펴 보고, "得" 字句를 "V+得(O)", "V+得+C", "V+得+O+C" 등 세 구조로 나누어 각 구조의 형식적, 의미적 특성을 고찰해 보았다. 한편 "得" 字가 내포하고 있는 完成意味와 可能意味의 상호관계를 〈祖堂集〉중의 운용상황을 분석함으로써 일정 구조 내에서의 語用환경이 어법적 表現機制에 미치는 영향에 대하여도 논의를 시도해 보았다. 본문은 또한 "得" 字句 중 "得" 자와 결합하는 술어동사의 의미적 특성이 "得" 字句 전체의 어법구조를 결정짓는 주요한 판단기준이 될 수 있다는 점에 착안하여 語義特性分析法과 語義指向分析法 등을 활용하여 "得" 자의 어법적, 의미구조적 특성을 논증해 보았다.

지속가능한 발전을 위한 환경용량평가에 관한 연구

임만택,박영신,이영문 朝鮮大學校 建設技術硏究所 2007 建設技術硏究 Vol.27 No.2

This study aims to present a framework for environmental management policy that can be used to manage city growth and sustainable development while considering the environmental capacity of the entire region When looking at aspects of the restrictions on development, it is clear that the restrictions on land use for metropolitan development projects are needed based on environmental capacity assessments. The environmental capacity assessment model should include environmental indexes such as water and air quality, waste disposable, and planned green tract development. When looking at the characteristics of environmental indexes phase by' phase, models of various affected zones should be developed, and characteristics of the types of developmental projects, in relation with the capacity of affected zones, should be considered when it is evaluated. By examining the relations above. the environmental capacity assessment of infrastructure should have significant meaning. An environmental management construction system, which should be based on an environmental capacity evaluation, needs to control all development in a given area. It should identify the total amount of development and determine what should be restricted through environmental capacity assessments - particularly the quality of rare environmental features, and the development of those regions with higher need for preservation should be restricted first. Environmentally friendly land use systems, including the use district system, should be conducted through which the specific use plan of the environmental capacity evaluation should be developed. The legal and institutional management relating to limit to exertion of use property right of common people and the plan for the environmental evaluation based on the environmental capacity evaluation should be developed.

지속가능한 주거환경평가지표에 관한 연구

임만택,김현태,김인호,박영신 朝鮮大學校 建設技術硏究所 2007 建設技術硏究 Vol.27 No.1

The index of residential environment is an item that can be an axis of evaluation in evaluating residential environment and the level is a spatial measure indicated with a use of the index. This study is to examine the index of sustainable residential environment evaluation index. Sustainability can be classified into three different concepts: economic, environmental, and social. Economic sustainability indicates consideration of stable development of the city and regional economy in the future, environmental sustain ability indicates consideration of physical environment to prevent deterioration of future residential environments and social sustainability indicates consideration of preservation of culture and history in communities. The common question in these is how the people who live and act in each community contribute to their future community.

상호작용 증진을 위한 웹 기반 셀목회(WBCM:Web Based Cell Ministry) 전략

임영택,성백 한국기독교교육정보학회 2002 기독교교육정보 Vol.5 No.-

Web based learning refers to the environment in which learners can make full use of the variety of resources and share their own perspectives and opinions with fellow-learners without time and space limitation. The educational potentials of web based learning lie on the worldwide-networking of dispersed learners and community-building line. Th purposes of this paper are to review the importance of cell ministry in the web based environments and to explore the variety of strategies for cell ministry. Cell ministry, which gain keen attentions from educational activities, consider most learners' activities with which they actively interact fellow member for sharing complex problems in the real world situations. Based on results of the former researches, this paper reviewed in order to drew out educational implications for effective, efficient and even attractive cell ministry strategies and suggested three strategies such as 1) combination of on- and off-line, 2) strategies relating teaching-learning, 3) strategies relating interaction-board, Jongboo pray room, cyber counseling room, e-mail, chatting.

인장하중을 받는 의사등방성 복합재 적층판의 피로손상

양광영,임경택,이동하,김택현,김인권 朝鮮大學校 機械技術硏究所 1999 機械技術硏究 Vol.2 No.1

The purpose of this work is to investigate fatigue damage of quasi-isotropic laminates under tensile loading in different directions. Low cycle fatigue tests of [O/-60/+60]s laminates and [+30/-30/90]s laminates were carried out. Materials systems used are AS4/Epoxy and AS4/PEEK. The fatigue damage of [+30/-30/90]s is very different from that of [O/-60/+60]s. The position of delamination generated at AS4/Epoxy and AS4/PEEK laminates were differentiated by the matrix difference that is, we suppose, the value of both G (critical energy release rate of mode-I) and G (critical energy release rate of mode-Ⅲ) difference. The experimental results are compared with the result obtained from the method of determining strain energy release rate components proposed by the authors.

Phemister 수술법을 이용한 급성 견봉 쇄골 관절탈구의 치료

표영배,임만택 朝鮮大學校 附設 醫學硏究所 1992 The Medical Journal of Chosun University Vol.17 No.1

The authors have experienced 26 Patients of complete dislocation of acromioclavicular joint from March 1985 to February 1990, who were treated at Chosun University Hospital with at least 12 months follow up, and we obtained following results. There were twenty-one males and five females. The age ranged from eighteen to fourty-six, the average was 34.5 years. We treated the patients with the Phemister technique in the all patients. The coracoclavicular ligament was repaired in 16 patients and not repaired in 10 Patients, and the general outcome did not differ between these two groups. Slight loss of reduction was developed in 9 patients after implant removal, but the functional results was not influenced at all. Clinical results were excellent and good in 21 cases (80%) according to Weitzman classification, Complications developed in the 8 cases: 3 arthritis, 2 K-wire migration, 1 K-wire breakage and 2 superficial wound infection. We concluded that the Phemister method is relatively simple and a good procedure for the treatment of acute complete dislocation of acromioclavicular joint, especially in young adult.