• 제목/요약/키워드: Conceptual change

검색결과 525건 처리시간 0.023초

Emerging Green Clusters in South Korea? The Case of the Wind Power Cluster in Jeonbuk Province

  • Berg, Su-Hyun;Hassink, Robert
    • STI Policy Review
    • /
    • 제3권1호
    • /
    • pp.63-79
    • /
    • 2012
  • Regional innovation systems and clusters represent a fashionable conceptual basis for regional innovation policies in many industrialized countries (including South Korea). Due to questions related to climate change and environment-friendly energy production, the green industry has been increasingly discussed in relation to regional innovation systems and clusters. This explorative paper analyzes these discussions and critically examines the emergence of green clusters in South Korea based on the case of the wind power cluster in Jeonbuk Province. It tentatively concludes that the role of the central government is too powerful and the role of regional actors (policy-makers and entrepreneurs) is too weak for the successful emergence of green clusters.

DEVELOPMENT OF INNER-SPHERICAL CONTINUOUSLY VARIABLE TRANSMISSION FOR BICYCLES

  • Park, M.W.;Lee, H.W.;Park, N.G.;Sang, H.S.
    • International Journal of Automotive Technology
    • /
    • 제8권5호
    • /
    • pp.593-598
    • /
    • 2007
  • A new continuously variable transmission for bicycles(B-CVT) is developed by using a traction drive mechanism having inner and outer spherical rotors. The B-CVT has high power efficiency, large torque capacity, improved drivability and good packageability. The ratio change mechanism for the B-CVT is very simple, in contrast with other traction drive CVTs. After completing a conceptual design, a performance analysis and a detail design, a prototype of the B-CVT has been manufactured. The prototype has rated power of 100 watts, pedal speed of 6 rad/s and an overall speed ratio of 1.0-4.0. A bench test and an actual bicycle test have been performed to verify the practicability of the B-CVT.

배전자동화 시스템에 IEC 61850 적용 방안 (IEC 61850 Application in Distribution Automation System)

  • 김태완;임일형;최면송;이승재;권성철
    • 전기학회논문지
    • /
    • 제60권4호
    • /
    • pp.687-693
    • /
    • 2011
  • In this paper, problems and solutions are proposed for applying IEC 61850 to Distribution Automation System(DAS). Communication protocol integration in power automation system have issued by IEC standards, IEC 61850 of them has researched for applying IEC 61850 to many areas of power system in spite of that it was made for substation automation system. Especially, DAS is just about to apply IEC 61850 by communication network change from serial to ethernet although DNP 3.0 is used. But it's impossible to apply directly IEC 61850 to DAS by difference of environment which unfixed wide area and separated nodes in power distribution system unlike concept of IEC 61850 is made by Substation Automation System(SAS) environment of limited space. Thus, this paper proposed applications of three types which conceptual, practical, and future to consider problems and solutions when apply IEC 61850 to Ethernet based DAS.

원자력 관점에서의 Xlet 모델을 이용한 응용 소프트웨어 관리자 개념 연구 (Conceptual Study of the Application Software Manager Using the Xlet Model in the Nuclear Fields)

  • Joon-Koo Lee;Hee-Seok Park;Heui-Youn Park;In-Soo Koo
    • 한국시뮬레이션학회:학술대회논문집
    • /
    • 한국시뮬레이션학회 2003년도 추계학술대회 및 정기총회
    • /
    • pp.59-65
    • /
    • 2003
  • In order to reduce the cost of software maintenance including software modification, we suggest the object oriented program with checking the version of application program using the Java language and the technique of executing the downloaded application program via network using the application manager. In order to change the traditional scheduler to the application manager we have adopted the Xlet concept in the nuclear fields using the network. In usual Xlet means a Java application that runs on the digital television receiver. The Java TV Application Program Interface(API) defines an application model called the Xlet application lifecycle. Java applications that use this lifecycle model are called Xlets. The Xlet application lifecycle is compatible with the existing application environment and virtual machine technology. The Xlet application lifecycle model defines the dialog(protocol) between an Xlet and its environment

  • PDF

건축물 유지관리점검 체계화를 위한 제도 개선방안 (A Study on the Improvement of Inspection System for Building Maintenance)

  • 유광흠;김민지
    • 대한건축학회논문집:계획계
    • /
    • 제34권10호
    • /
    • pp.63-73
    • /
    • 2018
  • As the life cycle of buildings is expected to increase, new constructions will decrease and the proportion of remodeling and repair will increase. Therefore, there is an increasing need for overall performance management of old buildings. In 2020, the proportion of buildings over 30 years old is expected to reach a half. As a result, the demand for securing and improving the performance in the stage of using the building is increasing due to the change in the demand for the building, such as the decrease in the construction permit and the increase in the use of the existing building. From this perspective, the study sought to consider institutional measures to organize the preventive and conservative maintenance of buildings. For this purpose, the conceptual goals of inspection for building maintenance were set through a literature review, and the status and problems associated with building maintenance were analyzed to suggest ways to improve the inspection system for building maintenance.

Effect of Transport Capacity Formula on Spatial Distribution of Soil Erosion

  • Nguyen, Van Linh;Yeon, Minho;Cho, Seongkeun;Lee, Giha
    • 한국수자원학회:학술대회논문집
    • /
    • 한국수자원학회 2021년도 학술발표회
    • /
    • pp.150-150
    • /
    • 2021
  • Soil erosion due to climate change is one of the global environmental issues. Especially, Korea is vulnerable to soil erosion as the frequency of extreme rainfall events and rainfall intensity are increasing. Soil erosion causes various problems such as reduced farmlands, deterioration of water quality in rivers, etc. To these severe problems, understanding the process of soil erosion is the first process. Then, it is necessary to quantify and analyze soil ersoion using an erosion model. Soil erosion models are divided into empirical, conceptual, and physics-based models according to the structures and characteristics of models. This study used GSSHA (Gridded Surface Subsurface Hydrologic Analysis), the physics-based erosion model, running on WMS (Watershed Modeling System) to analyze soil erosion vulnerability of the CheonCheon watershed. In addition, we compared the six sediment transport capacity formulas provided in the model and evaluated the equations fir on this study site. Therefore, this result can be as a primary tool for soil conservation management.

  • PDF

Emergency Management Policy Issues during and after COVID-19: Focusing on South Korea

  • Ki Woong Cho;Dongkyun Park
    • Journal of Contemporary Eastern Asia
    • /
    • 제22권1호
    • /
    • pp.49-81
    • /
    • 2023
  • South Korea is currently facing many changes and challenges. To make matters worse, society has struggled to function as it did before COVID-19. This study describes the past and current COVID-19 situation to offer lessons on management during and after COVID-19. We provide implications from COVID-19 and the foundation for future disasters by employing the strengths, weaknesses, opportunities, and threats (SWOT) analysis and indigenous administrative conceptual framework on culture, institution, and instrument to add a circumstance perspective. This study used secondary data from prior research and literature. Resolutions for these policy issues are presented using the strength-opportunity (SO), strength-threat (ST), weakness-opportunity (WO), and weakness-threat (WT) strategies. We suggest utilizing instruments that consider diverse societies and preventing the disease with climate change by collaborating with social institutions. We hope these implications and resolutions will provide insights for the future and other countries.

Assessment of Students' Cognitive Conflicts and Anxiety

  • Kim, Yeoun-Soo;Bao, Lei
    • 한국과학교육학회지
    • /
    • 제28권3호
    • /
    • pp.227-240
    • /
    • 2008
  • Cognitive conflict is well recognized as an important factor in conceptual change and is widely used in developing constructivism-based curricula. However, cognitive conflicts can also contribute to student anxiety during learning, which, when not properly addressed, can have negative impacts on students' motivation and achievement. Therefore, instructors need to be aware of the impacts of introducing cognitive conflicts in their instruction. We need a practical instrument that can help identify the existence and features of cognitive conflicts introduced by the instruction and the resulting anxiety. Based on the literature on studies of cognitive conflicts and student anxiety, we developed a quantitative instrument, the In-class Conflict and Anxiety Recognition Evaluation (iCARE), and used it to monitor the status of students' cognitive conflicts and anxiety in Physics by Inquiry (PBI) classes. In this paper, we introduce this instrument and present the types of information that can be obtained. Research and pedagogical values of this instrument are also discussed.

Rogers 이론에 근거한 가족양상 사정지침개발 (Development of a Family Pattern Appraisal to Guide a Rogerian Nursing Practice)

  • 이광옥;한영란;김희정
    • 대한간호학회지
    • /
    • 제25권4호
    • /
    • pp.751-773
    • /
    • 1995
  • We, clinical nurse specialists practising and guiding student practice in a Community health nursing clinic, wanted to develop a family pattern appraisal consistent with Rogers' conceptual system, the nursing model guiding our practice. We use Rogers' model because it is harmonious with the traditional Korean view of the one human, natural and cosmic world. The purpose of our research was to contribute to science - based nursing practice, not only, one helpful model, but also a model of how to use, in guiding practice, a conceptual system which reflects nurse practitioners' philosophy of nursing, is intellectually satisfying, and enriches meaning in daily nursing life. The research objectives were to review the literature on Rogers' model and analyse it according to Kim's five - level analytical framework, to explore Rogers' definition of family, to review appraisals based on Rogers' model, and to develop a family appraisal which is culturally appropriate for use in our community. This work including the use of the appraisal and its refinement with families in our practice which was done during 1994 and 1995, in Seoul, in the Capital of the Republic of Korea. At the highest level of analysis, Rogers conceptual system emphasizes acausality and multidimentional meaning ; the world view is characterized by process, movement and wholeness. The epistemology Is one of holism and the knowledge base includes all forms of experience, from sensory to mystical, objective, and subjective. At the metaparadigm level, nursing focuses on the unitary human being and the environment. At the level of nursing philosophy, the model identifies human being, nursing, nurse, and illness and health. At the paradigm level the model assumes the irriducibility of the human to parts, noncausality and continual change. Rogers' practice methodology consists of pattern manifestation appraisal and deliberative mutual patterning. Under-standing patterns and patterning of people is the key to helping them achieve their potential. At the theory level, the basic assumptions, key concepts, and homeodynamic principles were identified. Rogers states the family energy field is an undividable, four-dimensional negentropic energy field which is in a larger envircinmental field show-ing such characteristics as cannot be predicted by knowledge of individual family members. Based on the word of Rogers scholars, we chose Rogers' correlates of patterning to understand the family unit as a whole-frequency, rhythms, motion, time perception, sleeping-waking beyond waking, pragmatic -imaginative-visionary to develop the appraisal. We, also used some of Barrel's (1988) criteria including interpersonal network and professional health care access and use, and Cordon's (1982) criteria including self perception - self concept modified to fit the family. Our family Pattern appraisal included 1. Influencirg data, 2. Professional health care access and use, 3. Family self perception-self concept, 4. Family interpersonal network, 5. Sleep-wake-be-yond waking, 6. Pragmatic-imaginary-visionary, 7. Family frequency and rhythm, 8. Family motion, 9. Family time perception. The appraisal was used with four families and modified to eliminate overlap and to make it possible for the family member to express themselves more easily. We plan to gain more experience with the appraisal toward further development of the tool.

  • PDF

Public Library 2.0 기반 지역 커뮤니티지식정보시스템 개념적 설계 (A Study on Conceptual Design of Local Community Knowledge Information System Based on Public Library 2.0)

  • 박미영;승현우
    • 한국비블리아학회지
    • /
    • 제21권1호
    • /
    • pp.193-209
    • /
    • 2010
  • 도서관 서비스 혁신이란 지식정보화의 원천기술을 활용하여 '문화적 선도자로서의 변화'를 주도하고 하나의 시스템을 형성해 가면서 공유, 피드백 관계를 통해 새로운 지식을 창출, 상호작용이 활발한 특성화된 고유한 도서관을 만드는 것이다. 본 연구에서는 Public Library 2.0 서비스 모델을 기반으로 도서관의 서비스 혁신을 통한 디지털 지식정보화 시대에 공공도서관의 새로운 비전을 제공하고자 한다. 이를 위해 Public Library 2.0 기반 커뮤니티지식정보시스템 구현을 위한 개념적 설계를 목적으로 하며 연구내용과 연구방법은 다음과 같다. 첫째, 국내외 문헌조사를 통하여 Library 2.0의 정의, 원칙과 구성요소를 조사 분석하여 혁신을 주도하는 Library 2.0 서비스 모델을 제시하였다. 둘째, 국내 외 Library 2.0의 협력 기술인 블로그, 위키, 인스텐트 메세징, 포드캐스팅, 소셜네트워킹, 플리커를 중심으로 적용 사례의 유용성을 조사하였다. 셋째, Public Library 2.0의 정의와 원칙을 살펴보고 Public Librayr 2.0 기반 커뮤니티지식정보시스템 개념적 설계를 통해 공공도서관의 새로운 비전을 제시하였다. 본 연구는 차세대 공공도서관을 위한 개념적 설계를 위한 것으로 시스템 구현과 테스트를 위한 후속연구가 요구된다.