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The Effects of Background Knowledge on Solving Problems in Learning Scientific Concept (과학 개념 학습에서 배경 지식이 문제를 해결하는데 미치는 영향)

  • Choi, Hyuk-Joon
    • Journal of Korean Elementary Science Education
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    • v.28 no.1
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    • pp.24-34
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    • 2009
  • The purpose of this study is to examine the effects of background knowledge on problem solving. To achieve this aim, I proposed the model which shows problem solving process centering around background knowledge, conducted the lessons concerning the concept 'weightlessness' on pre-service elementary teachers, and then classified the pre-service elementary teachers into several groups by the difference of the results presented in the process of solving the problems on weightlessness. And I examined qualitatively the effects of background knowledge on problem solving through the interview with 11 volunteers. On the cause of the failing the problem solving, the failure of acquiring or activating the background knowledge related to the learning concept was most frequently, secondly the use of the background knowledge unrelated to the learning concept, and thirdly the failure of understanding the teaming concept. To acquire or activate the background knowledge related to the teaming concept was more difficult than to understand the new teaming concept, and the cases that use the background knowledge unrelated to the learning concept failed to solve problem. The result of interview, all interviewee understood the learning concept correctly, but all of them who fail to acquire or activate the background knowledge related to the learning concept, or use the background knowledge unrelated to the learning concept, could not solve the problem.

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A Study on Activating Social Network Services for Public Libraries in Korea (공공도서관의 소셜 네트워크 서비스 활성화 방안에 관한 연구)

  • Choi, Yeon Jin;Chung, Yeon Kyoung
    • Journal of the Korean BIBLIA Society for library and Information Science
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    • v.24 no.4
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    • pp.319-340
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    • 2013
  • The purposes of this study are to understand the current status of using and adoption of social network services for public libraries in Korea and to propose how to activate social network services for the libraries in the future. For this study, the usage of the social network services by 166 public libraries was investigated. In addition, surveys to 40 library representatives from the libraries were conducted and 198 public library users answered users' survey questionnaires. As methods to activate social network services in pubic libraries, providing education and training for librarians, hiring librarians for the service, and monitoring and educating the library users for participating with diversifying promotion channels for the service were suggested.

A Study on the Increasing Method in Domestic Use of Export Factoring for Small and Medium Enterprises (우리나라 중소수출기업의 수출팩토링 활용증대 방안에 관한 연구)

  • Park, Kwang-So
    • THE INTERNATIONAL COMMERCE & LAW REVIEW
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    • v.33
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    • pp.29-62
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    • 2007
  • The object of this paper is to increase in domestic use of export factoring for small and medium trading companies. Factoring involves a process where a specialized firm assumes the responsibility for the administration and collection of account receivable for its clients. It can be considered a form of short term commercial financing based on selling of trade credit at a discount, or for a prescribed fee plus interest. The youngest and smallest businesses cannot receive working capital for account receivable for export from financial companies, while larger businesses tend to have less need for factoring services. Using export factoring provide a valuable improvement to cash flow and working capital position and can possibly contribute to small business growth and development. There are several suggestions for export factoring to activate in Korea. First, the number of factoring companies need to be enlarge to activate export factoring in trade and financial policies. Second, factoring companies have to perform public relations for trading companies to inform the export factoring system and its advantages. Third, government need to support the system of export factoring with legislation and financial instruments. Forth, trading companies need to be reformed credit inquiry system in terms of expenses and methods by government This paper has attempted to emphasize on export factoring for small and medium size exporting companies and deserves more research by academics, practitioners and trade policy makers.

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Study on the Diagnosis of Agricultural Region Resident Organization Utilizing 'Weisbord's model' : Centered on 'My Hometown Keeper' Organization Diagnosis Case ('Weisbord 모형'을 활용한 농촌 주민조직 진단 연구 : '내고향지킴이' 조직진단 사례를 중심으로)

  • Choi, Hyo-Seung;Cho, Joong-Hyun
    • Journal of Korean Society of Rural Planning
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    • v.20 no.2
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    • pp.81-90
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    • 2014
  • This study was carried out to identify the limitations and problems of organization, as well as present plans to activate the organization through diagnosis on 'My Hometown Keeper' organization that was created for the purpose of growth of agricultural and fishing regions, and environment improvement. Utilizing Weisbord's Six-box Model, an organization diagnosis model useful for diagnosis of 'My Hometown Keeper' organization, 6 areas including organization's objective, structure, relationship, compensation system, leadership, subsidiary device system etc. and 14 survey questions were prepared, and a survey investigation was conducted on the staff at Korea Rural Community Corporation in charge of 'My Hometown Keeper' participating residents and administrative support. Based on the analysis results of survey investigation, the limitations and problems of organization were identified, and as plans to improve these and activate 'My Hometown Keeper' organization, 'Clear establishment of organization's objective and role', 'Preparation of compensation and incentive system', 'Growth of relationship and leadership between constituents' 'Enhancing the utilization of subsidiary device system such as education and information acquisition etc.' etc. were presented.

An Influence of the Appraisal and Reward on the Activities of Knowledge Creation and Knowledge Sharing - With Focus on the Central Administrative Government - (평가 및 보상이 지식창출과 공유활동에 미치는 영향 - 중앙행정기관을 중심으로 -)

  • Lee, Hong-Jae;Cha, Yong-Jin
    • Journal of the Korean Society for information Management
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    • v.24 no.1 s.63
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    • pp.55-74
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    • 2007
  • The purposes of this study are to examine the influences of appraisal and reward on the activities of knowledge management and to search the strategies for effective appraisal and reward system to activate the knowledge management. The results of covariance structural analyses indicate that appraisal has a significant direct effect on reward and knowledge creation as well as a significant indirect effect on knowledge sharing via reward and knowledge creation. Reward has a significant direct influence on knowledge sharing. Knowledge creation also significantly affects knowledge sharing. Based on the results, the potential implications of effective appraisal and reward system to activate the knowledge management are discussed.

A Study of Activation on the Academic Institutional Repository Using Additional Service Pages (부가 서비스 페이지를 이용한 학술 기관 레포지터리 활성화 방안 연구)

  • Chung, Yeon-Kyoung;Kim, Sun-Mi
    • Journal of the Korean Society for information Management
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    • v.24 no.1 s.63
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    • pp.147-164
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    • 2007
  • This study proposes additional service pages for users, researchers, institutions to activate academic institutional repository which captures, disseminates, and manages various academic resources, i.e. theses, dissertations, journal articles, research reports, and so on. The research methods include literature study, case study, and site analysis on the current homepages of Ewha Womans University faculties & institutions. As a result, components and functions of additional service pages such as researchers' pages are suggested. Additional service pages will be made it possible for researchers to submit their products willingly and for academic institutional repositories to activate their services and improve content recruitment in the end.

Formative Expressions by Artificial Light applied to Office Building Lobbies (현대 오피스 로비공간에서 빛의 조형적 표현 특성에 관한 연구)

  • Jeong, Soo-Ryun
    • Korean Institute of Interior Design Journal
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    • v.18 no.2
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    • pp.41-49
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    • 2009
  • Contemporary design environment is formed with image-centered trend based on pluralism. In this point of view, enterprises' building lobbies are public places containing the equivocal meaning, actively utilizing light as a design element to express the image of enterprises' identifications. Light is an immaterial entity having unlimited possibilities and potentials on space. It also acts as media to activate spaces and create new images in connection with formative elements of space. This study is to figure out how lightings are expressed and affected the formative characteristics of office lobby spaces and activate the specific characteristics of spaces. As a result, we drew conclusions as follows. First, as state-of-the-art technology and media are introduced, light is expressed on spaces as floating, direction, rhythm, silhouette, metaphor and allusion, sense of depth and volume. Second, expressive aspects of light in lobby space are embodiment of light, substantiation of immateriality, standing of materiality from the perspective of spatial aesthetics, and distortion/transformation of shape, pluralism phenomena of space from the perspective of spatial structure. In this way, light on building lobbies which are greatly required design differentiation strategy, specializes space and also integrates all the designs as not only a functional element but also a mental, psychological, formative element. Consequently, light on lobby spaces induces communication between spaces and users, makes formative value of existence in itself, and presents the characteristics of differentiated enterprises' identities.

An Analysis of Elementary Student s Errors in Solving the Science Multiple Choice Items (초등학교 학생들의 과학 선다형 문항 풀이 과정에서의 오류 분석)

  • 정미라;이기영;김찬종
    • Journal of Korean Elementary Science Education
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    • v.23 no.4
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    • pp.332-343
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    • 2004
  • Multiple choice items have been widely used. However the difficulties in understanding and solving the items have not been known well. The purpose of this study is to analyze the difficulties and errors in the process of solving multiple choice items. Twelve multiple choice items were developed based on the Unit 5 Separation of Mixtures in the 4th grade. Four items which students had hardly given the correct answer were selected and six students were chosen for interview. Interview results were analyzed with regard to the errors in the process of solving the multiple choice items. The findings of this study are as follows: I) The students who misread and misunderstand the questions choose the incorrect answers. 2) Most of the students activate daily knowledge in the process of problem solving. 3) The students who have misconception with the daily knowledge or have no experiences choose incorrect answers, while students who activate both daily knowledge and school knowledge choose correct answer. 4) The students of high level commit errors mainly in the latter part of problem solving process, but the students of low level do from early.

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Requirement of EGF Receptor Kinase for Signaling by Calcium-Induced ERK Activation and Neurite Outgrowth in PC12 Cells

  • Park, Jung-Gyu;Jo, Young-Ah;Kim, Yun-Taik;Yoo, Young-Sook
    • BMB Reports
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    • v.31 no.5
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    • pp.468-474
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    • 1998
  • Membrane depolarization in PC12 cells induces calcium influx via an L-type voltage-sensitive calcium channel (L-VSCC) and increases intracellular free calcium, which leads to tyrosine phosphorylation of epidermal growth factor (EGF) receptor and the associated adaptor protein, She. This activated EGF receptor complex then can activate mitogen-activated protein (MAP) kinase, as in nerve growth factor (NGF) receptor activation. In the present study, we investigated the role of EGF receptor in the signaling pathway initiated by membrane depolarization of PC12 cells. Prolonged membrane depolarization induced phosphorylation of extracellular signal-regulated kinase (ERK) within 1 min in undifferentiated PC12 cells. Pretreatment of PC12 cells with the calcium chelator EGTA abolished depolarization-stimulated ERK phosphorylation, but NGF-induced phosphorylation of ERK was not affected. The chronic treatment of phorbol ester, which down-regulated the activity of protein kinase C (PKC), did not affect the phosphorylation of ERK upon depolarization. In the presence of an inhibitor of EGF receptor, neither depolarization nor calcium ionophore increased the level of ERK phosphorylation. These data imply that the EGF receptor is functionally necessary to activate ERK and neurite outgrowth in response to the prolonged depolarization in PC12 cells, and also that PKC is apparently not involved in this signaling pathway.

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Medical Students' Perception of the Research Curriculum and Activating Factors on Research during Medical School (의과대학 연구력 향상 교육과정에 대한 학생 인식 및 연구 활성화 요인)

  • Kim, Insook;Yang, Eunbae B.
    • Korean Medical Education Review
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    • v.17 no.2
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    • pp.69-77
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    • 2015
  • Including the research in the medical curriculum is regarded as an important issue for medical education. Research experience at medical school has a positive impact on students and it motivates them to undertake further research in the future. The purpose of this study is to explore the factors to activate the research of medical school students. We investigated students' perception of the research curriculum in medical school. The survey for this study was conducted among 41 targeted medical school students from across the Republic of Korea. A total of 370 students from 26 medical schools responded. Benefits through research activities were to study about the areas of interest, as researchers had the opportunity to interact with professors and career. Students, furthermore, had difficulties in research due to data collection, the lack of research space and research funding. Requirements to activate the research were the time to participate in research activities, opening regular research courses, preparation of practical research program and motivation for such research. The medical school would need to improve the medical curriculum through the analysis of the environment and situation the school is facing based upon the in-depth analysis results of what the medical school is pursuing through the research activities, what the students want, what the potential difficulties are, and what the requirements are to improve the research curriculum.