• 제목/요약/키워드: scale issues

검색결과 1,021건 처리시간 0.03초

온실효과, 오존층 파괴, 산성비에 대한 예비 초등교사들의 개념 (The Conceptions of Pre-service Elementary Teachers about Greenhouse Effect, Ozone Layer Depletion and Acid Rain)

  • 백남권
    • 한국환경과학회지
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    • 제12권4호
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    • pp.367-373
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    • 2003
  • The focus of this study was to identify and describe environmental preconceptions held by pre-service elementary teachers about three issues : greenhouse effect, ozone layer depletion and acid rain. Two hundred and twenty nine pre-service elementary teachers participated in this study. A 36 question survey was created by one of the authors. The questions focused on the cause, effects, and interactions of three environmental issues greenhouse effect of one layer depletion and acid rain. Pre-service elementary teachers answered the questions on a Likert scale. An analysis of the survey data indicated that the majority of pre-service elementary teachers possess an array of incorrect conceptions about the causes and effects of the greenhouse effect ozone layer depletion, and acid rain. and also many pre-service elementary teachers thought that there were causal relationships among the increase in greenhouse effect, the destruction of ozone layer, and the increase of acid rain.

전자상거래에 관한 국제적 동향과 대응방안 (International Movement and Korea's Response of Electronic Commerce)

  • 이현정;김태현
    • 인터넷정보학회논문지
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    • 제1권2호
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    • pp.38-48
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    • 2000
  • 최근 전자상거래의 규모는 점점 확대되어 나아가면서 가상공간에서의 상거래에 있어 여러 가지 문제점이 발생된다. 따라서 본 연구에서는 인터넷의 확산과 아울러 전자상거래에서 현행 제기되는 몇 가지 문제점들을 살펴보고. 주요 문제점들에 관한 국제적 동향과 우리나라의 대응방안을 고찰하고자 한다. 결국, 인터넷라운드의 대응 및 전자상거래 안정적인 성장을 위해서 정부가 주도적으로 규범화 작업등을 통하여 국제적인 수준으로 맞추어 나아가야 할 것이다.

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습지보전을 위한 환경영향평가제도 (An Environmental Impact Statement for Wetlands Conservation)

  • 이상돈
    • 한국습지학회지
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    • 제2권1호
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    • pp.1-9
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    • 2000
  • The purpose of Environmental Impact Statement (EIS) is an integral component of decisions on proposed plans, projects, and actions. Adapted from the National Environmental Policy Act(NEPA, 1969) environmental impact statement in Korea has aimed to analyse and prepare the mitigation in the process of big scale development and major industrial planning. During the past 19 years EIS has played the central role for the environmental issues in the process of economic development. Nevertheless EIS act needs some modification in the system as well as in the contents of evaluation process. EIS should be served as decision-making process by assessing environmental issues in the beginning stage of proposed actions. Other consideration was suggested to make EIS system better used for environment conservation.

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운영비 절감을 고려한 u-City 구축 모델 개발 (A Development of u-City Construction Model Considering the Reducing of Operating Cost)

  • 박광호;김대영;김윤형
    • 산업경영시스템학회지
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    • 제33권4호
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    • pp.10-22
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    • 2010
  • The first full-scale u-City operation has started in Dongtan u-City. As local cities take over and operate the u-City, unexpected issues arise such as securing the budget of operating costs and self-providing the costs with business models utilizing the u-City assets. The paper presents a strategy for solving these issues. The strategy provides a foundation(infrastructure) for long-term operation models which may reduce the long-term operating costs. In order to establish the economic operating framework of u-City, suggested are some cost-reduction models based on the operating costs structure. For each model, a base framework with comparative analysis of operating costs is provided. With these models, each u-City may select a relevant model according to the characteristics of it. We hope that the framework provides the foundation for efficient and sustainable u-City operations.

Quality improvement in pediatric care

  • Park, Moon Sung
    • Clinical and Experimental Pediatrics
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    • 제61권1호
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    • pp.1-5
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    • 2018
  • We often overlook the importance of several safety issues such as identification of patients, timeout procedure, hand hygiene, handoff communication, and many others. This ignorance, along with many other issues, leads to medical error being ranked as a third leading cause of death in the U.S. Consequently, quality improvement (QI) has become one of the major subjects in healthcare despite a relatively short history. Improving quality is about making healthcare safe, effective, patient-centered, timely, efficient, and equitable. Understanding the need and methodology of QI as well as participation is now essential for physicians. Although basic QI methodology has not changed, one of the most fascinating changes in recent QI is conducting large-scale QI projects through multicenter networks. Prospective multicenter QI projects utilizing the Korean Neonatal Network are a substantial initiation of pediatric QI in Korea. The Korean Pediatric Society should set ambitious goals for QI activities for every primary care pediatrician and pediatric subspecialist.

한국의류학지에 게재된 설문조사 연구의 방법론적 특성 분석 (A critical review of survey methods in Journal of the Korean Society of clothing and Textiles)

  • 이미영;김태일
    • 한국의류학회지
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    • 제26권6호
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    • pp.779-789
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    • 2002
  • The purpose of this study is to examine methodological issues of empirical research using survey methods in Journal of the Korean Society of Clothing and Textiles. We reviewed 95 articles from Journal of the Korean Society of Clothing and Textiles in 1996, 1998, and 2000. Methodological issues were categorized into four areas: questionnaire and scale development, sampling and collecting data, variable construction, and external validity(generalization). In each imp, a check list was made and 95 articles were reviewed based on this limit. Major findings were discussed and some suggestions were made for future research.

시스템 통합의 발전방향 (The Future Directions for System Integration)

  • 이순철;정병헌;오부연;이영희
    • Journal of Information Technology Applications and Management
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    • 제12권1호
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    • pp.1-19
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    • 2005
  • Economy of scale would be one of the most important issues among organizations pursuing system integration projects. Cerntainly there are other benefits than cost reduction for achieving system integration. However. these benefits could not be achieved automatically. if system integration projects were undertaken without thoughtful planning. In this paper. we propose a framework for an effective system integration by (1) defining the objects(user interface. database. application. and server) and (2) considering the level of integration(physical integration and rational integration). Therefore. 6 types of integration can be considered. Five case studies of domestic organizations were reviewed to suggest various issues and solutions. Based on our case studies. we discovered that five integration types - EIP. EAI. ERP. BPM and System Reconsolidation - were most widely used.

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Production of Recombinant Anti-Cancer Vaccines in Plants

  • Lee, Jeong Hwan;Ko, Kisung
    • Biomolecules & Therapeutics
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    • 제25권4호
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    • pp.345-353
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    • 2017
  • Plant expression systems have been developed to produce anti-cancer vaccines. Plants have several advantages as bioreactors for the production of subunit vaccines: they are considered safe, and may be used to produce recombinant proteins at low production cost. However, several technical issues hinder large-scale production of anti-cancer vaccines in plants. The present review covers design strategies to enhance the immunogenicity and therapeutic potency of anti-cancer vaccines, methods to increase vaccine-expressing plant biomass, and challenges facing the production of anti-cancer vaccines in plants. Specifically, the issues such as low expression levels and plant-specific glycosylation are described, along with their potential solutions.

REVIEW AND FUTURE ISSUES ON SPENT NUCLEAR FUEL STORAGE

  • Saegusa, T.;Shirai, K.;Arai, T.;Tani, J.;Takeda, H.;Wataru, M.;Sasahara, A.;Winston, P.L.
    • Nuclear Engineering and Technology
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    • 제42권3호
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    • pp.237-248
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    • 2010
  • The safety of metal cask and concrete cask storage technology has been verified by CRIEPI through several research programs on demonstrative testing for the interim storage of spent fuel. The results have been reflected in the safety requirements for dry casks issued by NISA/METI (Nuclear and Industrial Safety Agency, Ministry of Economy, Trade and Industry) of the Japanese government. On top of that, spent fuel integrity has been studied by the Japan Nuclear Energy Safety Organization (JNES). This paper reviews these research programs. Future issues include the long-term integrity of cask components and high burn-up spent fuel.

산업안전보건관리비가 건설재해예방에 미치는 영향 (The Effect of Occupational Safety and health Expenses on Safety Accident Prevention in Construction)

  • 정명진;이명구;김형석
    • 대한안전경영과학회지
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    • 제12권4호
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    • pp.13-21
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    • 2010
  • The occupational safety and health expenses in construction since 1988 has contributed significantly to the reduction of injury occurrence rate. But accounted basis and criteria used of the occupational safety and health expenses have been pointed out so many issues. The purpose of this study, perform analysis of the effectiveness of the occupational safety and health expenses through the reviewing of several issues about the current system and analysis of existing statistical data. Based on the result of the research, it is concluded that the contribution survey of the occupational safety and health expenses on the safety accident prevention program qualitatively evaluated as an average of 4.39(standard deviatin 0.652) on the five point scale based was very positive.