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Elementary School Teachers' Usage of Web Supplement for the Science Teaching and Learning (과학 교수.학습 지도를 위한 초등교사의 웹 자료 활용 현황 조사)

  • Jhun, Young-Seok;Lee, Soo-Ah;Shin, Young-Joon;Kang, Suk-Jin;Cha, Hee-Young;Song, Young-Wook
    • Journal of Korean Elementary Science Education
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    • v.28 no.3
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    • pp.313-320
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    • 2009
  • It takes elementary school teachers long time to search for instructional materials. They have also difficulties with choosing proper contents among much of the overlapping materials. Thus this study set out to investigate the current utilization of web materials by teachers, analyze the materials in the existing homepage, and identify useful materials for teachers. For those purposes, the investigator developed an evaluation framework to analyze science education materials in the existing homepage and analyzed materials using the framework. The materials had developed in the past failed to reflect the demands of teachers, who were the users, actively. Therefore, we took a survey to analyze their demands and reflected the results to establish a set of criteria to analyze materials. After dividing materials according to utilization and format, the external and internal elements of materials were assessed according to the evaluation items. If they systematically select many teaching and learning materials developed for elementary science and make efforts to vitalize their educational usage by sorting out overlapping materials and developing new needed ones, they will be able to save a huge amount of expenses and maximize the efficiency as educational materials.

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The Transfrontier Development Strategies in European Union - A Case Study of the Transfrontier among France-Belgium-Luxemburg - (유럽연합의 접경지역 개발 전략 - 프랑스-벨기에-룩셈부르크의 P. E. D.를 사례로 -)

  • 문남철
    • Journal of the Korean Geographical Society
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    • v.37 no.4
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    • pp.442-459
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    • 2002
  • With the formation of European Union, the frontier function which was existed among the member nations was vanished. The European Union, each national government, and local or regional self-government search actively for the transfrontier development strategies in order to make the underdeveloped transfrontiers an united internal region of European Union with an augmentation of mutual activities inter-transfrontier and a cooperative development of transfrontier. On the transfrontier among France-Belgium-Luxemburg which was the iron industry center of Europe, the cooperative development strategies(P.E.D.) of the inter-government and inter-local are executing for the restructuring of the stable regional economic on the basis of the INITRREG program of the European Union. In recent years, the locals self-govemments transfrontier are executing not only restructuring of regional economic but formation of urban community with the unification of the urban and regional planning, administration, and society.

Re-orienting Fashion of Modern Fashion by the Approach of Semiotics -Focusing on Korea, China, and Japan- (현대 패션에 나타난 리오리엔팅 패션의 기호학적 연구 -한.중.일을 중심으로-)

  • Min, Jeong-Ah;Chae, Keum-Seok
    • Journal of the Korean Society of Clothing and Textiles
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    • v.33 no.8
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    • pp.1241-1252
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    • 2009
  • This study is on the internal and external characteristics along with the phenomena of dress and ornaments expressed in them by analyzing Re-orienting Fashion (which is a system of signs and symbols) based on the theories of semiology in the search for the Korean identity by examining a Re-orienting Fashion that is being reinterpreted. Re-orienting Fashion performs the role of signs that act in the spread of Oriental culture through the globalization of traditional dress and ornaments in the Orient. It also has a meaning that converts the world of fashion to a new direction. When analyzing the system of signs and symbols in Re-orienting Fashion (based on the theories of semiology) the conclusions are that an eclectic symbol system has been formed by the combination of the pursuit of modernization in traditional dress and ornaments with post-modernism. A nature-friendly symbol system has been shaped as a natural silhouette in terms of the combination with Eastern philosophy that searches for a harmony with nature according to ecological trends. The ideal of a symbol system means the introduction of design elements in traditional dress and ornaments of the East as a rejection of Western civilization and as an alternative to the fixed pattern of the West.

Insecticidal Activity of Ethyl Acetate Extracts from Culture Filtrates of Mangrove Fungal Endophytes

  • Abraham, Silva;Basukriadi, Adi;Pawiroharsono, Suyanto;Sjamsuridzal, Wellyzar
    • Mycobiology
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    • v.43 no.2
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    • pp.137-149
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    • 2015
  • In the search for novel potent fungi-derived bioactive compounds for bioinsecticide applications, crude ethyl acetate culture filtrate extracts from 110 mangrove fungal endophytes were screened for their toxicity. Toxicity tests of all extracts against brine shrimp (Artemia salina) larvae were performed. The extracts with the highest toxicity were further examined for insecticidal activity against Spodoptera litura larvae and acetylcholinesterase (AChE) inhibition activity. The results showed that the extracts of five isolates exhibited the highest toxicity to brine shrimp at 50% lethal concentration ($LC_{50}$) values of 7.45 to 10.24 ppm. These five fungal isolates that obtained from Rhizophora mucronata were identified based on sequence data analysis of the internal transcribed spacer region of rDNA as Aspergillus oryzae (strain BPPTCC 6036), Emericella nidulans (strains BPPTCC 6035 and BPPTCC 6038), A. tamarii (strain BPPTCC 6037), and A. versicolor (strain BPPTCC 6039). The mean percentage of S. litura larval mortality following topical application of the five extracts ranged from 16.7% to 43.3%. In the AChE inhibition assay, the inhibition rates of the five extracts ranged from 40.7% to 48.9%, while eserine (positive control) had an inhibition rate of 96.8%, at a concentration of 100 ppm. The extracts used were crude extracts, so their potential as sources of AChE inhibition compounds makes them likely candidates as neurotoxins. The high-performance liquid chromatography profiles of the five extracts differed, indicating variations in their chemical constituents. This study highlights the potential of culture filtrate ethyl acetate extracts of mangrove fungal endophytes as a source of new potential bioactive compounds for bioinsecticide applications.

Still Image Identifier based over Low-frequency Area (저역주파수 영역 기반 정지영상 식별자)

  • Park, Je-Ho
    • Journal of Digital Contents Society
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    • v.11 no.3
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    • pp.393-398
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    • 2010
  • Composite and compact devices equipped with the functionality of digital still image acquisition, such as cellular phones and MP3 players are widely available to common users. In addition, the application of digital still images is becoming common among security and digital recording devices. The amount of still images, that are maintained or shared in personal storage or massive storage provided by various web services, are rapidly increasing. These still images are bound with file names or identifiers that are provided arbitrarily by users or that are generated from device specific naming method. However, those identifiers are vulnerable for unexpected changing or eliminating so that it becomes a problem in still image search or management. In this paper, we propose a method for still image identifier generation that is created from the still image internal information.

A Study on the Aesthetic Characteristics of Contemporary Fashion that Uses Artificial Light (인공적인 빛을 활용한 현대 패션의 미적 특성 연구)

  • Jung, Hyun;Geum, Key-Sook
    • Journal of the Korean Society of Costume
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    • v.58 no.4
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    • pp.113-127
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    • 2008
  • Artificial lights have effected the changes of art and fashion concepts as well as human life since the invention of electric light bulb in late 19th century. Artist and designer have had more interested in these artificial lights as the development of digital technology and the change of millennium and they have tried to apply the lights into their works. The purpose of this study is to analyze the aesthetic characteristics of contemporary fashion design using artificial light as a medium. Artificial light for fashion design means the light using luminescent material like phosphorescent and fluorescent materials or in combination with electroluminescent digital technology or the light that can be perceived as images when light projects from media using a light projector or other digital equipment. Fashion design using this light type can change colors or form temporarily and it can playa role as a gadget for hm or as equipment to provide information much as a computer monitor does. And designer can create virtual patterns on the surface of clothes, or virtual fashion like a 3-dimensional holography in empty space. In these fashion designs, the virtual image of light is substituted for physical formative elements in fashion, and the viewer can experience an ambiguity between reality and virtuality. The results of the study were as follow; The formative characteristics of those fashion designs were identified as visibility, indeterminacy, integration and virtuality. And they reflected the internal meanings; the persue of protection and safety, the search for experiment and innovation, the will for interaction and communication and the desire for the deviation and fun.

Features for Author Disambiguation (저자 식별을 위한 자질 비교)

  • Kang, In-Su;Lee, Seungwoo;Jung, Hanmin;Kim, Pyung;Goo, HeeKwan;Lee, MiKyung;Sung, Won-Kyung;Park, DongIn
    • Proceedings of the Korea Contents Association Conference
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    • 2007.11a
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    • pp.107-111
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    • 2007
  • There exists a many-to-many mapping relationship between persons and their names. A person may have multiple names, and different persons may share the same name. These synonymous and homonymous names may severely deteriorate the recall and precision of the person search, respectively. This study addresses the characteristics of features for resolving homonymous author names appearing in citation data. As disambiguation features, previous works have employed citation-internal features such as co-authorship, titles of articles, titles of publications as well as citation-external features such as emails, affiliations, Web evidences. To the best of our knowledge, however, there has been no literature to deal with the influences of features on author disambiguation. This study analyzes the effect of individual features on author resolution using a large-scale test set for Korean.

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A Study on the Facing Problem for Science of Communication (통신과학의 당면과제)

  • 조정현
    • The Journal of Korean Institute of Communications and Information Sciences
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    • v.2 no.1
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    • pp.2-13
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    • 1977
  • Along with the evolution of social phenomena such as politics, econmics, and culture, communication that is also one of social activities or social procedures has been developed as an independent science with integral characteristics.Originally formed in the United States of America in 1950s, the science of communication is now greatly spreading all over the world. Indebted to this world tendency, Korean Institute of Communication Science was inaugulated in February of 1575, acknowledging the need of accepting this science in Korea with the objectives to secure social and national development. The science of communication is to analyze its internal elements and search for the scientific trait and their relativities. Moreover, this science aims to contribute to human welfare by means of systematizing communication activities intimately related with various adjoining sciences. In other words, the science of communication is to logically systematize the principles and theories based on communication practices and to a great extent cultivate the applying theory and efficient method of communication.Accordingly, 1 would like to suggest that many scholars, educators, practitioner, and managers interested in communication fields have a new acknowledgment and outlook for· communication andeavor to make it scientific and self - independent .

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Degradation Diagnosis of Complex System Using Regression Analysis (희귀분석을 이용한 복합 시스템의 열화진단)

  • Kim, Seong-Hong;Song, Jae-Joo
    • Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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    • 2001.09a
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    • pp.60-66
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    • 2001
  • Because of internal voids in insulators give rise to partial discharge(PD), which cause local breakdown and even entire insulation breakdown. Treeing due to PD is one of the main causes of breakdown of the insulating materials and reduction of the insulation life. Therefore the necessity for establishing a method to diagnose the aging of insulation materials and to predict the breakdown of insulation has become important. From this viewpoint, our studies diagnose insulation degradation using the method of computer sensing system, which has the advantages of PD and acoustic emission(AE) sensing system. To use advantages of these two methods can be used effectively to search for treeing location and PD in some materials. In analysis method of degradation, We analyzed the PD pulse and AE pulses by regression analysis, compared to these obtained the correlation coefficient and determination coefficient by T-distribution and saw that PD and AE pulses show a similar pattern on the whole. This is in agreement with the results of the research by Yoshimura and Fujita.

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Management of Knowledge and Information Resources Made by Research Institutes: Focusing on the Homepags of Educational Research Institutes (연구기관 생산 지식정보자원 관리에 관한 연구: 교육연구기관 홈페이지를 중심으로)

  • Lee, Myeong-Hee
    • Journal of Korean Library and Information Science Society
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    • v.46 no.1
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    • pp.177-202
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    • 2015
  • This research was conducted to evaluate whether knowledge and information resources produced in four educational institutions function as a knowledge management system in the institutions, and to suggest a proposed plan for the foundation of the national knowledge management system. Knowledge and information resources available on the institutes' websites were classified as 'knowledge and information resources of result', 'knowledge and information resources of process', and 'knowledge and information resources of communication'. The application of metadata and the configuration of the search system were examined by content analysis method. From the result, 8 ways to improve the management of knowledge and information resources have been found; the development of standardized metadata and classification scheme, high recognition that the website is a counter for external distribution of knowledge and information resources, various searching skills and the provision of knowledge maps available, provision of linked information for original information acquisition, awareness of the agency managers and homepage managers to the homepages as knowledge management systems, segmentation of appropriate data size unit in a mobile environment work, an organic linkage function of the internal electronic approval system and the homepage have been proposed.