• 제목/요약/키워드: Science and Media

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학교교육 문제해결책으로서의 학교도서관에 관한 일 연구 (A Study on the School Library Media Center as a Important Solution to the Problems of School Education)

  • 서진원
    • 한국문헌정보학회지
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    • 제32권2호
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    • pp.277-294
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    • 1998
  • 본 논문에서는 우리나라 학교교육의 문제점과 학교도서관의 문제점을 살펴 본후 학교교육을 정상화시키기 위한 방안으로 학교도서관의 발전을 주장하였다. 현대 사회에서 요구되어지는 창의성 개발교육, 평생교육, 열린교육 등에 있어서 우리나라 교육현장의 문제점을 살펴보았으며 학교도서관이 이러한 학교교육의 요구에 어떻게 적합한가를 논하였다. 또한 이상적인 학교도서관의 역할과 관련하여 우리나라 학교도서관 현장의 문제점을 살펴보았으며 특히 사서교사의 심각한 부족현상을 가장 중요한 요인으로 지적하고 앞으로의 개선 방안을 제시하였다.

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컴퓨터 비전 기술을 활용한 관객의 움직임과 상호작용이 가능한 실시간 파티클 아트 (Real-time Interactive Particle-art with Human Motion Based on Computer Vision Techniques)

  • 조익현;박거태;정순기
    • 한국멀티미디어학회논문지
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    • 제21권1호
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    • pp.51-60
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    • 2018
  • We present a real-time interactive particle-art with human motion based on computer vision techniques. We used computer vision techniques to reduce the number of equipments that required for media art appreciations. We analyze pros and cons of various computer vision methods that can adapted to interactive digital media art. In our system, background subtraction is applied to search an audience. The audience image is changed into particles with grid cells. Optical flow is used to detect the motion of the audience and create particle effects. Also we define a virtual button for interaction. This paper introduces a series of computer vision modules to build the interactive digital media art contents which can be easily configurated with a camera sensor.

디지털 매체와 인쇄 매체에서의 문단 읽기 속도 비교 (Reading Speed Comparison: Paragraphs in Digital and Print Media)

  • 이고은
    • 인지과학
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    • 제34권4호
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    • pp.299-314
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    • 2023
  • 본 연구에서는 인쇄 매체와 디지털 매체 간 읽기 수행에 차이가 있는지 살펴보기 위해 인쇄물과 태블릿 PC에서 문단의 읽기 속도를 측정하였다. 매체의 물리적 특성이 읽기 수행에 영향을 미치는지 살펴보기 위해 인쇄 매체와 디지털 매체 간 글의 포맷을 최대한 동일하게 하였다. 또한 문단을 구성하고 있는 문장 길이에 따라 매체 간 읽기 수행 차이가 다르게 나타나는지 살펴보기 위해 동일한 내용을 긴 문장으로 구성한 조건과 짧은 문장으로 구성한 조건을 비교하였다. 추가적으로 참가자의 작업기억 용량에 따라 읽기 수행에서 차이가 있는지 살펴보기 위해 읽기폭 수준에 따른 읽기 속도를 분석하였다. 연구 결과, 디지털 매체로 읽을 때보다 인쇄 매체로 읽을 때 읽기 속도는 더 빠른 것으로 나타났으나, 문단을 구성하고 있는 문장의 길이에 따라서는 읽기 속도에 차이가 없었다. 읽기폭이 큰 참가자가 읽기폭이 작은 참가자에 비해 읽기 속도가 빠른 것으로 나타났으며, 읽기폭이 큰 참가자는 긴 문장으로 된 문단을 디지털 매체보다 인쇄 매체로 더 빠르게 읽는 것으로 나타났다. 본 연구의 결과는 태블릿 PC가 유발하는 시각 피로도와 참가자의 작업기억 용량이 읽기 속도에 영향을 미칠 수 있음을 시사한다.

딸기의 고설수경재배에서 배지의 종류가 생육, 수량 및 과실의 품질에 미치는 영향 (Effect of Substrates on the Growth, Yield and Fruit Quality of Strawberry in Elevated Hydroponic System)

  • 전하준;황진규;손미자;최문환;조문수
    • 생물환경조절학회지
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    • 제15권4호
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    • pp.317-321
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    • 2006
  • 본 실험은 딸기의 고설수경재배에 이용 가능한 적정한 배지를 조사하기 위하여 수행하였다. 코코피트 배지에서 엽수가 가장 많았으며, 원예용 상토배지에서 엽장과 엽폭이 가장 우수했다. 과중은 통계적인 유의성은 없었지만 원예용 상토배지에서 25.8g으로 가장 높게 나타났고 과장, 과경, 당도 등도 처리 간에 유의한 차이는 없었지만 원예용 상토배지에서 가장 좋은 결과를 나타내었다. 주당 수확과수는 원예용 상토와 코코피트 배지 모두 왕겨 혼합배지보다 유의하게 높은 수치를 나타내었다. 주당 수량은 원예용 상토배지가 545.9g으로 가장 많았으며, 그 다음으로 코코피트 배지에서 높았으며 왕겨 혼합배지에서 가장 낮았다. 본 연구에서는 딸기의 수경재배에 적합한 고형배지로서 생산자가 구입과 작업이 편리하고 물리성이 좋은 원예용 상토의 우수성을 입증하여, 딸기 재배농가에게 유용한 정보로 활용될 수 있을 것으로 기대되며 타 작물의 고형배지 재배에서도 유용하게 이용될 것으로 생각된다.

The Features of Ukrainian Media Art in a Global Context

  • Hridyayeva, Tamara O.;Kohut, Volodymyr O.;Tokar, Maryna I.;Stanychnov, Oleg O.;Helytovych, Andrii A.
    • International Journal of Computer Science & Network Security
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    • 제21권4호
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    • pp.229-240
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    • 2021
  • The article seeks to explore Ukrainian media art and its features in a global context. In particular, it performs an in-depth analysis of the stages of its development from video art of the 1990s, media installations of the 2000s, and to various digital and VR technologies today. Due to historical circumstances, the development of media art was quite rapid, as young artists sought to gain new experience in media art. Most often, their experience was broadened through international cooperation and studying abroad. The paper analyzes the presentation of Ukrainian media art outside the country during 1993-2020 and distinguishes the main thematic areas of the artists' work. It examines how artists present and reveal the peculiarities of the Ukrainian worldview, aesthetics, and culture through the problematization of certain aspects and themes in their work. Specifically, among the principal topics which are problematized in the work of media artists are a sensory experience, limited sensory capabilities, gender issues, the Chernobyl tragedy, the development of utopian models of the city, and global communication. The leading themes of Ukrainian artists also include revolution and war. Notably, political and social sentiments determine the unique energy and vitality of contemporary Ukrainian art, create a revolutionary creative environment, and unite media artists in group art projects. It is concluded that by showing, exhibiting, and presenting them outside the country, artists shape the image of Ukrainian art in a global context.

A MAS Information Management Method for WiMedia MAC Protocol

  • Chung, Tae-Wook;Chung, Chul-Ho;Kim, Jae-Seok
    • JSTS:Journal of Semiconductor Technology and Science
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    • 제9권4호
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    • pp.205-208
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    • 2009
  • In this paper, a MAS information management method is proposed for the WiMedia MAC protocol. WiMedia MAC configures a fully distributed network based on Ad-hoc method. WiMedia devices communicate during Superframe which is a communication unit in WiMedia MAC. Each superframe which consist of 256 MASs is divided into two periods, beacon period and data period. In data period, devices communicate with each other using the received channel access information during the beacon period. Due to only $12{\mu}s$ timing allowance between beacon period and data period, the process of the MAS information management cannot be completed in time if entire process handle by software. Therefore, we propose a novel MAS information management method using hardware module. With our proposed method, a WiMedia device is satisfied with the processing time that is required in WiMedia MAC protocol.

비타민류가 곰팡이의 유지생산에 미치는 영향 (Effect of Vitamins on Lipid Accumulation of Molds)

  • 손병효;정태명;김용균;이영근
    • 한국응용과학기술학회지
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    • 제2권2호
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    • pp.15-20
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    • 1985
  • Influence of vitamins on the felt and lipid production of Aspergilus niger var. macrosporus, Aspergillus fumigatus and penicillium notatum were investigated after 10 days of incubation at $30^{\circ}C$ under static culture condition. The felt of molds were lower in the media containing vitamins than control medium. The lipids produced by each strains were highest yields in media containing vitamins. Among of these Aspergillus niger var. macrosporus and Aspergillus fumigatus produced. 4.6g and 5.28g in medium containing inositol 2.5mg/l and 0.5mg/l, respectively; while Penicillium notatum produced 1.51g in a medium containing thiamine 10mg/l. The major fatty acid of lipids were palmitic acid, stearic acid, oleic acid and linoleic acid. Aspergillus niger var. macrosporus was lower palmitic acid in media containing vitamins than control medium, While linoleic acid was higher in media containing thiamine and inositol. Aspergillus fumigatus was lower oleic acid in media containing vitamins than control medium, While linoleic acid was higher in media containing vitamins. Peniillium notatum was lower palmitic acid, oleic acid and stearic acid in media containing vitamins but linoleic acid was higher. The composition of fatty acid of lipids changed depending on the media containing vitamins but hardly found a certain tendency except linoleic acid which was higher in a media containing thiamines and inositols. The degree of unsaturation of fatty acids in the lipids were comparatively higher in media containing vitamins than control medium.

Evaluation of Selective Media Containing Iron Source and Alpha-Glucosidase Substrates for Enterobacter sakazakii (Cronobacter spp.) Detection

  • Chon, Jung-Whan;Seo, Kun-Ho;Yim, Jin-Hyeok;Bae, Dongryeoul;Kim, Binn;Kim, Tae-Jin;Jeong, Dongkwan;Song, Kwang-Young
    • Journal of Dairy Science and Biotechnology
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    • 제39권1호
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    • pp.9-19
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    • 2021
  • Enterobacter sakazakii (Cronobacter spp.) causes meningitis, necrotizing enterocolitis, sepsis, and bacteremia in neonates and children and has a high mortality rate. For rapid E. sakazakii detection, various differential and selective media containing α-glucosidase substrates, such as 5-bromo-4-chloro-3-indolyl-α-D-glucopyranoside (BCIG) or 4-methylumbelliferyl-α-D-glucoside (α-MUG), have been developed as only E. sakazakii exhibits α-glucosidase activity in the genus Enterobacter. However, Escherichia vulneris (family: Enterobacteriaceae) can also utilize α-glucosidase substrates, thereby resulting in false positives. Various iron sources are known to promote the growth of gram-negative bacteria. This study aimed to develop a selective medium containing α-glucosidase substrates for E. sakazakii detection that would eliminate false positives, such as those of E. vulneris, and to determine the role of iron source in the medium. Three previously developed (TPD) media, i.e., Oxoid, OK, and VRBG, and the medium developed in this study, i.e., NGTE, were evaluated using 58 E. sakazakii and 5 non-E. sakazakii strains. Fifty-four E. sakazakii strains appeared as fluorescent or chromogenic colonies on all four media that were assessed. Two strains showed colonies on NGTE medium and not on TPD media. In contrast, the remaining two strains showed colonies on TPD media and not on NGTE medium. None of the non-E. sakazakii strains showed fluorescent or chromogenic colonies on any of the evaluated media except E. vulneris, which showed colonies on TPD media and not on NGTE medium. This study demonstrated that the newly developed NGTE medium was not only equally efficient in promoting the growth of bacterial colonies when compared with the currently available media but also eliminated false positives, such as E. vulneris.

전자민주주의 매체의 효과 분석 (An Analysis of the Media Effectiveness for Electronic Democracy)

  • 오재인
    • 한국경영과학회지
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    • 제23권4호
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    • pp.225-234
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    • 1998
  • little attention has been given to the analysis of electronic democracy media, although electronic democracy, if adopted in Korea, is expected to enhance the quality of the political culture to a large extent. This research is to compare electronic democracy media, such as Internet, cable TV, teleconferencing, fax, and ARS and suggest recommendations on the successful Introduction strategy of electronic democracy in Korea. The analysis of collected data yields research findings, such as the fact that internet will be the most effective medium and a strategy for popularizing internet needes to be developed in advance.

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