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Natural gas hydrates in the eastern deep-water Ulleung Basin (동부 심해 울릉분지의 천연가스 하이드레이트)

  • Ryu, Byong-Jae;Kim, Ji-Hoon;Chung, Bu-Heung;Lee, Young-Joo
    • 한국신재생에너지학회:학술대회논문집
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    • 2008.05a
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    • pp.610-612
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    • 2008
  • Piston cores retrieved from the eastern part of the deep-water Ulleung Basin were analyzed to access the potential of hydrocarbon gas generation and natural gas hydrate (NGH) formation. Seismic data acquired in the study area were also analyzed to determine the presence of hydrocarbon gas and/or NGH, and to map their distribution. Core analyses revealed high total organic carbon (TOC) contents which favor hydrocarbon generation. The cores recovered from the southern study area showed the sufficient residual hydrocarbon gas concentrations for the formation of significant NGH. These cores also showed the cracks developed parallel to the bedding that suggest significant gas content in situ. A number of seismic blanking zones were observed on seismic data. They are identified as vertical to sub-vertical chimneys caused by the upward migration of pore fluid or gas, and containing of free gas and/or NGH. Often, they are associated with velocity pull-up structures that are interpreted to be the result of high-velocity NGH. The seismic data also showed several bottom-simulating reflectors (BSRs) that are associated with overlying NGH and underlying free gas. The distribution of blanking zones and BSRs would be impacted by the lateral differences of upward methane fluxes.

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Chlorella vulgaris Has Preventive Effect on Cadmium Induced Liver Damage in Rats

  • Shim, Jae-Young;Om, Ae-Son
    • Molecular & Cellular Toxicology
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    • v.4 no.2
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    • pp.138-143
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    • 2008
  • We investigated if Chlorella vulgaris (CV) has protective effects on cadmium (Cd) induced liver damage in male Sprague-Dawley (SD) rats. Forty rats, aged 5 weeks old and weighed 90-110g, were divided into a control (with Cd free water), 50 ppm of $CdCl_2$ in drinking water treated groups (Chlorella 0% diet group (Cd/CV0%), Chlorella 5% diet group (Cd/CV5%) or Chlorella 10% diet group (Cd/CV10%). All the rats had freely access to water and diet for 8 weeks. The results show that body weight gain and relative liver weight had significantly lower in Cd/CV0%-treated group than in Cd/CV-treated groups. Hepatic Cd contents showed significantly less by feeding CV (P<0.05). Cd/CV0%-treated rats had significantly (P<0.05) higher hepatic T-MTs, and Cd-MTs concentrations, compared to Cd/CV5% or Cd/CV10% treated rats. The MT I/II mRNA was expressed in the liver of all experimental rats. Its expression was more increased in Cd/CV5%- or Cd/CV10%-treated rats, compared to control and Cd-treated rats. Thus, this study suggested that CV would have a protective effect on Cd-treated liver injury by the reduction of Cd concentrations and stimulation of Cd-MT binds in the liver. However, more studies are needed to identify the proper mechanism of CV and liver toxicity.

The User Interface Basic Elements for Small Mobile Web (소형 모바일 웹을 위한 사용자 인터페이스 기본 요소)

  • Moon, Byung-Koo;Lee, Won-Ho;Choi, Seong-Cheol
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.11 no.9
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    • pp.3532-3537
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    • 2010
  • Mobile phones can access the wired website using mobile Full Browsing service. But the number of mobile websites is quite small compared to domestic Internet domain, and is mainly concentrated in some large businesses. The small businesses and individuals have a problem that is difficult to develop mobile Web interface, because they are lack of the technology for usability and compatibility. This paper proposes the small basic interface elements that are considered usability and based on relevant standards and can easily be applied in the industry. The proposed basic interface elements consist of 33 elements for overall behavior, navigation, contents, page definition and user input.

Development of Nursing Center for Elderlies and the Disabled (노인 및 장애자를 위한 건강간호센타 운영모형 개발 - 대학 건강간호센타를 중심으로 -)

  • Lee Kap-Soon
    • Journal of Korean Public Health Nursing
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    • v.7 no.1
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    • pp.17-29
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    • 1993
  • Nursing centers are nurse-managed organizations that give the client direct access to professional nursing services. Academic nursing centers are faculty-created and -organized nursing centers integrated into nursing school or cooperated with community nursing center. Academic nursing centers are needed for providing services to the forgotten or underserved populations in the community, providing learning opportunities for nursing students and practice opportunities for faculties. The intent of this study is to identify the elements needed in developing process and operations of acedemic nursing center for elderlies and the disabled, and to present the desired model for academic nursing center. The processes of my study were : 1) The articles of the academic nursing centers in U. S. were reviewed and analysed. 2) The academic nursing center for elderlies and the disabled was developed and operated in my paper. 3) Desired model for academic nursing center was presented in my paper. The followings are the results of my study: 1. Elements needed in developing process of academic nursing center were philosophy and goals, the community support, assessment of the validity of the service and health needs, identification of the service contents, roles and responsibilities, communication lines, finances for facilities and operations, cooperation with resources, and developing record system. 2. Elements needed in operations of academic nursing center were the structural organizations, realization of the above philosophy and goals, development of policy and nursing standards, faculty participation, continuity of services, and financial solutions. 3. The desired model was presented according to the process and operations.

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A Study on the Regulation of WTO in Agriculture and its Import Management of Korea (WTO농산물협정의 주요내용과 한국의 대응방안)

  • 박근수
    • The Journal of Information Technology
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    • v.1 no.2
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    • pp.119-141
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    • 1998
  • The main contents of WTO agricultural product agreement are composed of $\circled1$ market access $\circled2$ domestic subsidy and reduction of export subsidy $\circled3$ preferences for developing countries. But there still remains the possibility of laying a protection barrier within WTO regulations. That is to say, with the application of quota system, tariff rate quota system, or different quotas on different countries, and with the practices of government control trade and mark up. This paper is for studying the application of these protection barriers to minimize the impact of agricultural market opening.

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A Study on the Layout Planning in Elementary School Library as General Information Center (종합정보센터로서 초등학교도서관 배치계획에 대한 연구)

  • Heo, Young-Hwan;Lee, Sang-Ho
    • Korean Institute of Interior Design Journal
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    • v.16 no.2 s.61
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    • pp.225-232
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    • 2007
  • Elementary education is the most fundamental education phase to cultivate a minimum natural quality for basic people life. Because elementary school is a very important step to be a base of lifelong education, it has to lead students to develop a capability of information utilization and rear the ability of self-leading study. Accordingly the elementary school library must be made and managed to cope with a new environment of education and information, as well as it must be a appropriate facilities for the contents of the 7th course of study : The aim of the 7th course of study is to rear the autonomous and creative Korean who lead the age of globalization and information-oriented. It is an ideal that the school library has a separate building for itself as the general information center but it is not easy to do in our conditions. Accordingly when it Is located in a school house, it has to be at the center within easy access of other related rooms such as a classroom and school house. Therefor making a plan and designing a school building, the school library has to be considered preferentially as a main facilities in order to make a school to accept the future.

A Reform about the KCR 4th ed.(Draft) (韓國目錄規則 4版(草案)에 대한 提言)

  • 김자후
    • Journal of Korean Library and Information Science Society
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    • v.33 no.3
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    • pp.235-256
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    • 2002
  • The purpose of this study is to suggest a reform after detecting out issues and problems associated with the KCR 4th ed.(draft). KCR(Korean Cataloguing Rules) is representative cataloguing rules in Korea, the 4th ed.(draft) of which was prepared by Cataloguing Committee(department of KLA) in 2001. As a result of this study, a lot of problem which are glossary, context, inconsistency of the contents, rules applied to card catalog, and others, were found out. Thus, substantial improvements were able to be suggested.

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A Safety Verification of the Modified BLP Model using PVS (PVS를 이용한 수정된 BLP 모델의 안전성 검증)

  • Koo Ha-Sung;Park Tae-Kue;Song Ho-Keun
    • Journal of the Korea Institute of Information and Communication Engineering
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    • v.10 no.8
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    • pp.1435-1442
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    • 2006
  • The ideal method of safety evaluation is to verify results of execution against all possible operations within operating system, but it is impossible. However, the formal method can theoretically prove the safety on actual logic of operating system. Therefore we explain the contents of the art of the safety verification of security kernel, and make a comparative study of various standardized formal verification tools. And then we assigned PVS(Prototype Verification system) of SRI(Stanford Research Institute) to verify the safety of a modified BLP(Bell & LaPadula) model, the core access control model of multi-lavel based security kernel. Finally, we describe formal specification of the revised BLP model using the PVS, and evaluate the safety of the model by inspecting the specification of the PVS.

Design and Implementation of Web-Based Cyber Training System (웹기반 가상연수 시스템 설계 및 구현)

  • Lee, Yong-Hoon;Han, Pan-Am
    • The Transactions of the Korea Information Processing Society
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    • v.7 no.9
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    • pp.2920-2929
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    • 2000
  • In this paper, a cyber training institute system suitable for teachers' training is designed and implemented, and it is applied to and evaluated on the actual spot. While general purpose cyber education systems have too much unnecessary functions and are inconvenient to operate, this system removes the unnecessary functions and has only useful functions. This system is much concerned with the interaction among learners, instructors, administrators and contents. This system is characterized by having menu items such as Searching Learners, Taking Attendance, Information for Learners, Assignment Hand out, Group Debate, Cyber Cafe and Access Statistic to promote the interaction. The result of the application of this system to 554 teachers for two years is that the ratio of completion was 95%.

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A Study on Characteristics of Spatial Interaction of Media Art in the Age of New Media (뉴 미디어 시대의 매체예술적 공간 상호작용 특성 연구)

  • Lee, Go-Eun;Lee, Chan
    • Korean Institute of Interior Design Journal
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    • v.22 no.3
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    • pp.70-80
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    • 2013
  • This study aims to discover characteristics of interaction through media artistic space, a field of media investigation, for understanding interaction which represents the age of new media and a view on development of interaction which plays a bigger role in it. To achieve this, a research infrastructure was prepared by having access to expression components of which media are applied in a context of art history on media art. Further, physical interaction, perceptual interaction, and mediational interaction were derived by presenting interaction discussed in the existing various areas from an integrated perspective. Subsequently, in order to understand the contents of interaction and its activity, cases were analyzed through analytic frames consisting of interaction elements of subordinate concepts which each interaction has. For results derived from the research, interaction characteristics of media serve as a leading role in space as they are actively used as a potential tool. Therefore, although interaction has been variously represented, it forms a relationship focused on participants, and in order to build a closer relationship with the participants and further interaction, it will be possibly developed in a manner of thinking.