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이태원,Lee, Tae-Won 한국과학기술정보연구원 2002 지식정보인프라 Vol.10 No.-
어류는 분류학자 및 수산 관련 전문학자의 뿐 아니라, 어민, 수산 관련 사업자, 낚시 및 수족관 관련업자들도 깊은 관심을 가지며, 일반인들의 식탁이나 주변에서 접하는 어류에 대한 정보를 알고자 한다. 이렇게 어류는 다양한 계층이 관심을 가져, 국내외에 수많은 어류 DB가 service 중이다. 이러한 DB 가운데 본 보고에서는 생물학적.생태학적 정보를 제공하는 DB를 살펴보고 앞으로의 방향을 제시하였다.
다이캐스팅법에 의해 제조된 SiC 입자강화 알루미늄합금기 복합재료의 미세조직 및 인장특성
이태원,이지환 ( Tae Won Lee,Chi Hwan Lee ) 한국주조공학회 1997 한국주조공학회지 Vol.17 No.4
N/A The main objective of this study is to investigate the microstructure and tensile strength of SiC_p/Al alloy composites fabricated by die casting method. Die casting was performed using the preheated mold at the pouring temperature range of 620∼750℃ under the pressure of 1,039 kgf/㎠. The low speed and a following high injection speed were 0.4 and 2.1m/s, respectively. The microstructure of SiC_p/Al alloy composites fabricated by die casting method was found to be finer than that of composites fabricated by gravity casting. Also, SiC particulates were homogeneously distributed in refined A1 matrix due to rapid solidification. The tensile strength of SiC_p/Al alloy composites fabricated by die casting method was found to be varied with cast temperature. The maximun tensile strength of SiC_p(10 vol.% and 20 vol.%)/Al alloy composites showed 380 MPa at the cast temperature of 750℃ and 363 MPa at the cast temperature of 700℃, respectively.
이태원,김호영,Lee, T.W.,Kim, H.Y. 대한설비공학회 1992 설비공학 논문집 Vol.4 No.3
To analyze the unsteady heat transfer phenomena in radiant heating panel, a mathematical model was considered. Numerical analysis for solving the governing equations was conducted by using the finite difference method with boundary-fitted meshes. Transient temperature distributions and thermal responses in heating panel were obtained for various design parameters such as pipe pitches, pipe diameters and pipe depths. Experimental results were also obtained to verify the results of calculation.
이태원,이홍섭,박형호,Lee, T.W.,Lee, H.S.,Park, H.H. 한국마이크로전자및패키징학회 2015 마이크로전자 및 패키징학회지 Vol.22 No.1
Stretchable electrode materials are focused to apply to flexible device such as e-skin and wearable computer. Used as a flexible electrode, increase in electrical resistance should be minimalized under physical strain as bend, stretch and twist. Carbon black is one of candidates, for it has many advantages of low cost, simple processing, and especially reduction in resistivity with stretching. However electrical conductivity of carbon black is relatively low to be used for electrodes. Instead graphene is one of the promising electronic materials which have great electrical conductivity and flexibility. So it is expected that graphene added carbon black may be proper to be used for stretchable electrode. In this study, under stretching electrical property of graphene added carbon black composite electrode was investigated. Mechanical stretching induced cracks in electrode which means breakage of conductive path. However stretching induced aligned graphene enhanced connectivity of carbon fillers and maintained conductive network. Above all, electronic structure of carbon electrode was changed to conduct electrons effectively under stretching by adding graphene. In conclusion, an addition of graphene gives potential of carbon black composite as a stretchable electrode. 신축성 전극소재는 웨어러블 밴드나 전자피부와 같은 플렉서블 제품으로의 적용 때문에 주목 받고 있다. 플렉서블 소자로서 사용하기 위해선 구부리거나 비틀거나 늘리는 등 물리적 변형에도 전기저항의 증가가 최소화되어야 한다. 카본블랙은 저가의 간단한 공정, 특히 인장 시 비저항의 감소라는 장점 때문에 후보소재로 고려되고 있다. 하지만 카본블랙의 전도도는 전극으로 사용되기에 상대적으로 낮다. 이에 비해 그래핀은 뛰어난 전기전도도 및 유연성 때문에 촉망받고 있는 전자소재이다. 따라서 그래핀을 첨가한 카본블랙은 신축성 전극으로 적합한 소재로 예상된다. 본 논문을 통해 인장 시 그래핀을 첨가한 카본전극의 전기적 특성을 연구하였다. 기계적인 인장은 전극 내의 균열(crack)을 형성시켜 도전경로의 파괴를 일으켰다. 하지만 인장으로 정렬된 그래핀은 카본필러 간의 연결성을 강화하고 도전구조를 유지하였다. 무엇보다도 그래핀 첨가로 인하여 인장 시 카본전극의 전자구조가 변화하여 전자를 효과적으로 전도하게 하였다. 결론적으로 그래핀 첨가를 통해 카본블랙 복합체에 신축성 전극으로의 가능성을 부여하였다.
스마트시티 프로젝트 이해관계자 간의 목표 우선순위에 대한 연구: AHP 방법론의 적용을 중심으로
이태원,김승철,이아연,박소현,Lee, Taewon,Kim, Seung-Chul,Lee, Ayeon,Park, So Hyun 한국산업경영시스템학회 2022 한국산업경영시스템학회지 Vol.45 No.3
For the smooth implementation and success of smart city projects, it is necessary to recognize that there is a difference in the perception of value judgments or strategic goals among major stakeholders in the planning process. And it is necessary to aim the values and goals of smart cities through reconciliation of these differences. The two major stakeholders in the smart city development project are citizens group and government officials group. Government officials are in charge of establishing and implementing policies for smart city projects, and their value judgments and perceptions influence the policy direction. In these respects, government officials can be an important stakeholder group. Citizens are a group that includes ordinary residents and business owners who live in smart cities and are the ultimate users of infrastructure and facilities. This study investigated the importance perceptions of citizens and government officials, who are the major stakeholders, about the core values and strategic goals that the smart city project aims. Responses were collected using a structured questionnaire to which the AHP methodology was applied. And the priority of perceptions for constituent items was compared for each stakeholder group. Through the comparative analysis results, it was empirically confirmed that there is a difference in the values and goals pursued by the smart city project between stakeholder groups. As an empirical study on the stakeholders of the smart city project, this study is meaningful in contributing to the theoretical development in that it suggests that the conceptual structural model of the smart city strategy system presented in previous studies can be applied in practice.
청열약류(淸熱藥類)의 면역약리학적(免疫藥理學的) 고찰(考察)
이태원,서영배,Lee, Tae-won,Seo, Young-bae 대전대학교 한의학연구소 2001 혜화의학회지 Vol.10 No.1
In the result of investigating traditional chinese medical literatures to understand definite immun opharmacologic effects of drugs for clearing away heat and detoxicating such as Oldenlandiae Diffusae Herba, Fel Ursi, Fraxini Cortex, Pulsatillae Radix, Bruceae Fructus, Portulacea Herba, Patriniae Radix, we could reach conclusions as follows: 1. Oldenlandiae Diffusae Herba can increase voracity of leukocytes and immune function of splen ocytes. 2. Fel Ursi, Patriniae Radix can inhibit acute, chronic inflammation by decreasing voracity of macrophages, monocytes and recover lymphocytes. 3. Fraxini Cortex have anti-inflammatory effect then applied to treat with arthritis. Pulsatillae Radix, Bruceae Fructus, Portulacea Herba have anti-cancer, anti-biotic effects. Above results indicates that drugs for clearing away heat immunosuppressive effect that they can apply to all sorts of inflammatory diseases such as arthritis, DTH, SLE, and cancer.