• 공학교육연구
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• 제13권2호
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• pp.49-53
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• 2010

The architectural engineering is regarded as the non-IT related field. But as growing the domain of IT industry, the students who major in the architectural engineering have to keep the programming ability to deal with the architectural engineering problems. In this paper, It will be discussed the development of the application program for architectural engineering problems by using the programming skill, and how can it enhance the non-IT related field's students to solve the problems.

• 한국신재생에너지학회:학술대회논문집
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• 한국신재생에너지학회 2010년도 춘계학술대회 초록집
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• pp.95.1-95.1
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• 2010

Transparent conducting ZnO films were deposited to apply DSSC Substrate on glass substrates at $500^{\circ}C$ by ionbeam-assisted deposition. Crystallinity, microstructure, surface roughness, chemical composition, electrical and optical properties of the films were investigated as a function of deposition parameters such as ion energy, and substrate temperature. The microstructure of the polycrystalline ZnO films on the glass substrate were closely related to the oxygen ion energy, arrival ratio of oxygen to Zinc Ion bombarded on the growing surface. The main effect of energetic ion bombardment on the growing surface of the film may be divided into two categories; 1) the enhancement of adatom mobility at low energetic ion bombardment and 2) the surface damage by radiation damage at high energetic ion bombardment. The domain structure was obtained in the films deposited at 300 eV. With increasing the ion energy to 600 eV, the domain structure was changed into the grain structure. In case of the low energy ion bombardment of 300 eV, the microstructure of the film was changed from the grain structure to the domain structure with increasing arrival ratio. At the high energy ion bombardment of 600 eV, however, the only grain structure was observed. The electrical properties of the deposited films were significantly related to the change of microstructure. The films with the domain structure had larger carrier concentration and mobility than those with the grain structure, because the grain boundary scattering was reduced in the large size domains compared with the small size grains. The optical transmittance of ZnO films was dependent on a surface roughness. The ZnO films with small surface roughness, represented high transmittance in the visible range because of a decreased light surface scattering. By varying the ion energy and arrival ratio, the resistivity and optical transmittance of the films were varied from $1.1{\times}10^{-4}$ to $2.3{\times}10^{-2}{\Omega}cm$ and from 80 to 87%, respectively. The ZnO film deposited at 300 eV, and substrate temperature of $500^{\circ}C$ had the resistivity of $1.1{\times}10^{-4}{\Omega}cm$ and optical transmittance of 85% in visible range. As a result of experiments, we provides a suggestition that ZnO thin Films can be effectively used as the DSSC substrate Materials.

• 정보처리학회논문지D
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• 제9D권1호
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• pp.111-126
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• 2002

웹 시스템 개발은 기존의 메인 프레임 또는 클라이언트/서버 환경과는 달리 기술적으로 볼 때, 역동적이고 가변적인 요소들이 강하게 작용하며, 비교적 단기간에 이루어지는 만큼 개발자가 쉽게 적응할 수 있는 실용적이고 효율적인 프로세스는 매우 중요하다. 그러나, 웹 시스템 개발에 대한 기술적인 대안과 구현 언어, 아키텍쳐 구성에 대한 논의는 적극적인 반면, 표준화된 개발 프로세스와 산출물에 대한 논의는 상대적으로 활발하지 못했다. 본 논문에서는 현행 웹 시스템 개발 프로세스에 대한 문제점들을 분석하고, 이에 대한 대안으로써, 반복과 점증의 개념을 적용한 도메인 특성에 근거한 웹 시스템 개발 프로세스를 제안한다. 도메인의 분류는 웹 시스템 요소와 웹 사이트 유형을 상호연결하여, 총 5개의 도메인을 설정하구, 프로젝트에 적용된 2개의 도메인에 대한 워크플로우를 작업내용 및 산출물 중심으로 구체화한다. 또한, 제안하는 프로세스를 인트라넷 시스템 개발에 적용하고, 구성과 요소로 분류된 척도를 통해 기존의 웹 개발 프로세스와 비교 평가한다.

• 한국자기공명학회논문지
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• 제15권2호
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• pp.115-127
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• 2011

A newly developed cost-effective approach to prepare $^{15}N/^{13}C$-labeled protein for NMR studies is presented. This method has been successfully applied to isotopically labeling of PTK6 SH2 domain and MTH 1880 protein. The production method generates cell density using a growing media containing $^{15}NH_4Cl$, $^{12}C_6$-D-glucose. Following a doubling time period for unlabeled metabolite exhaustion and then addition $^{13}C_6$-D-glucose into a M9 growing media, the cells are induced. Our results demonstrate that in order to get full incorporation of $^{13}C$, the isotopes are not totally required during the initial growth phase before induction. The addition of small amounts of $^{13}C_6$-D-glucose to the induction phase is sufficient to obtain more than 95% incorporation of isotopes into the protein. Our optimized protocol is two-thirds less costly than the classical method using $^{13}C$ isotope during the entire growth phase.

• 정보보호학회논문지
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• 제16권6호
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• pp.3-13
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• 2006

초고속 인터넷 망의 확충으로 인터넷을 이용한 정보전달이 보편화되고, 전자우편은 많은 양의 자료를 빠르고 편리하게 송수신 할 수 있는 가장 보편적인 통신 수단이 되었다. 하지만 정크메일의 수신빈도와 그로 인한 피해가 갈수록 높아져 그 문제가 심각한 수준에 이르게 되었다. 더구나 근래의 정크메일은 시스템을 공격하기 위한 바이러스나 해킹 도구를 전파하는 수단으로 이용되어 컴퓨터 침해 사고의 심각한 원인으로 지적되고 있다. 따라서 본 연구에서는 실제 상황에서 유입되는 정크메일의 로그 분석을 통하여 그 특징을 분석한 후 FQDN 확인과 개인별 격리처리를 이용한 차단 시스템을 구현하였고 성능을 평가하였다.

• Journal of Photoscience
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• 제9권2호
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• pp.47-50
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• 2002

Raft is a distinctive membrane domain enriched in a certain class of lipids, cholesterol, and proteins observed on the plasma membrane. Growing evidence has revealed that such membrane domains play key roles in signal transduction, fertilization, development, transmitter release, and so on. Recently, we have isolated raft-like detergent-resistant membrane (DRM) fraction from bovine photoreceptor rod outer segments. Transducin and its effecter, cGMP-phosphodiesterase, elicited stimulus-dependent translocation between detergent-soluble membrane and DRM. This suggested potential importance of such distinct membrane domains in vertebrate phototransduction. Here, we will discuss physiological meaning of the translocation of major components of cGMP cascade to raft-like membrane in phototransduction. We would like to propose a hypothesis that raft-like membrane domains on the disk membrane are the place where cGMP cascade system could be quenched.

• 산업기술연구
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• 제21권B호
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• pp.75-83
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• 2001

In the field of secure information systems including electronic commerces, public key infrastructure(PKI) is widely used for secure services. The more PKI domains are established, the more needs are required for cross-domain certifications. Furthermore, each country has many certificate authorities(CA) which require more complex cross certification: We may need a fast algorithm in order to find the possible certification paths. This will be more indispensible in the growing PKI systems. We designed and implemented the high-speed certification path discovery algorithm. Also, we investigated the feature of operation of the system.

• 한국의류학회지
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• 제30권6호
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• pp.928-938
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• 2006

Tween refers 'between' generation aged of 10-16 who are between child and high teens. Tweens have been regarded as one of the fast growing markets and they show some unique characteristics as next-generation consumers. This study has explored the perception of their appearances and clothing styles, style preferences, and influencing factors on clothing behavior of tweens. 120 students aged of 12-15 participated in depth interview and data were structured and categorized by applying domain analysis. Results showed tweens have great concerns on their appearances and styles, so they want to express their identities and aesthetic favors through clothing styles. As for clothing style preferences, they have multi-facet tastes such as casual, active, feminine/ masculine, sophisticated, dramatic, etc. Factors influencing on their clothing behavior include reference groups like friends, dual desires of conformity and individuality, fashion, and brand names.

• 기술혁신학회지
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• 제1권3호
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• pp.436-450
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• 1998

This paper is about strategies for developing information and telecommunications standardization experts(ITSEs). For an analysis of current status of ITSEs or development of strategies for education and utilization of ITSEs, it is necessary to classify the types and roles of ITSEs. The classification of ITSEs can be made standardization technology field, characteristics of expert field, and activity domain. It is necessary to remind the ever growing importance of development and utilization of ITSEs. Furthrmore, More importanct is to set right direction and strategies with valid alternatives to enhance the importance. Correct direction setting, right problem-mindedness, long-term perspective, periodical evaluations are crucial to the policy of further development and utilization of ITSEs.

• 한국IT서비스학회지
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• 제5권1호
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• pp.165-175
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• 2006

Electronic commerce has many advantages compared to the traditional way of doing business such as up to date information and rich service for less cost. There is a growing number of electronic commerce applications on the Internet. Using software agent technology, the market framework offers timesaving automation of auctions and flexibility through negotiations among the agents. In this research, we attempt to evaluate the performance of a negotiation decision function that considers the potential competitors in competitive market environment as well as that of a negotiation decision function that does not. For this evaluation, this study adopts the electronic marketplace as an application domain in which many sellers and buyers compete for limited resources in the marketplace.