• 제목/요약/키워드: Science and Media

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흰굳음병균(Beauveria basiana) 단균사의 대량배양생산을 위한 액체배지 개발 (Development of Liquid Culture Media for the Mass Production of Beauveria bassiana Blastospore)

  • 서종복;진병래
    • 한국잠사곤충학회지
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    • 제37권2호
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    • pp.172-175
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    • 1995
  • 흰굳음병균(B. basiana)을 이용하여 백강잠의 대량생산과 효과적인 사상균 살충제 개발을 위해, 사상균의 대량배양 체계에 있어서 접종원인 단균사의 대량 확보에 필수적인 1차 액제배지를 개발하였다. 농가부산물인 저가의 밀기울을 탄소원으로, 질소원으로는 대두박을 선발하고, 이들의 조성비와 농도에 따른 밀기울·대두박 배지에서 단균사의 성장을 조사한 결과, 밀기울과 대두박을 3:2의 비율로 최종배지 농도가 5%되게 조성하였을 때, 배양 4일째 배지 ml당 약 7.6X108개의 단균사를 얻을 수 있어, 단균사의 성장과 경제성면에서 가장 효과적이었다.

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PSYCHO-PHYSICAL ANALYSIS OF PAPER AND A NEW DESIGN CONCEPT OF PAPER MEDIA FOR THE NEXT CENTURY

  • Fumihiko ONABE
    • 한국펄프종이공학회:학술대회논문집
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    • 한국펄프종이공학회 1999년도 Proceedings of Pre-symposium of the 10th ISWPC
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    • pp.209-213
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    • 1999
  • In the society of the 21\ulcorner century under multiphase media conditions, the rapidly glowing electronic media will replace the conventional paper media in a variety of areas. However, if human being still has an affinity for paper media and an instinct for hardcopy from electronic-based text or image, the new market will be created for the paper industry. To what extent the consumer choses paper media for output will depend upon the availability of functions of paper media appealing to human senses; i.e., "sensory functions of paper". As a whole, on-demand type personal as well as business communications will increase in the next century and this trend will lead certainly to a rapidly expanding "contents hardcopy market". The technological progress of the paper industry in the 21\ulcorner century depends upon the market needs for higher products quality and higher efficiency of manufacturing process as well as an endeavour to overcome constraints from forest resource, energy, and environmental issues. Under the conditions with above constraints, the paper media will be polarized into two categories; (1)paper for higher image reproduction capability for original image or text and (2)paper for lower reproduction but with higher appeals for human senses. To cope with these trends, psycho-physical analysis and a sensory engineering approach for developing new paper media is vitally required. Also newly emerged roles of paper physics in the multimedia age is pointed out associated with sensory functions of paper that are not well-understood so far.

국내 비형식 과학 교육 연구 경향 분석: 교육적 관점을 중심으로 (Trend Analysis of Informal Science Education Research in Korea: Focus on Educational Perspectives)

  • 장은진
    • 과학교육연구지
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    • 제42권3호
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    • pp.293-307
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    • 2018
  • 이 연구에서는 앞으로 비형식 과학 학습 연구가 추구해야 할 방향을 모색하기 위하여, 기존의 비형식 과학 학습 관련 연구들이 다루어온 교육적 관점을 각 분야별로 분석하였다. 이를 위하여 최근 6년간 발행한 비형식 과학 학습 관련 학술지 144편을 대상으로 하여 각 연구에서의 교육적 관점을 분석하였다. 그 결과, 과학적 실천 참여나 정서 고양, 지식의 이해에 관한 연구가 다수 이루어졌지만, 과학의 본성에 대한 이해에 대한 연구는 드물게 이뤄지는 등 몇 가지 교육적 관점에 치우쳐서 연구가 이뤄진 경향이 있었다. 또한 이러한 경향은 각 분야 세부 매체별에서도 나타났는데, 치우친 양상은 매체별로 다양하게 나타났다. 따라서 형식 교육의 보조가 아닌 비형식 과학 학습 그 자체로서의 다양한 측면을 살펴보고, 추구하고자 하는 바를 깊게 이해하기 위해서는 각 매체별 연구에 있어서 다양한 교육적 관점을 검토해야 할 것이다.

Social Media Marketing and Brand Loyalty: The Role of Brand Trust

  • PUSPANINGRUM, Astrid
    • The Journal of Asian Finance, Economics and Business
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    • 제7권12호
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    • pp.951-958
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    • 2020
  • This study examines the relationship between social media marketing and brand loyalty through brand trust. Respondents were drawn from customers of McDonald's, Malang City, East Java Province, Indonesia. For this study, 130 questionnaires were distributed and data were analyzed using the Structure Equation Model (SEM) version 22 of the AMOS (Analysis of Moment Structure) application. The results showed that social media marketing had an impact on increasing McDonald's brand trust and brand loyalty. Brand trust influences brand loyalty and brand trust can mediate the influence of social media marketing on McDonald's brand loyalty. The findings prove that brand trust can mediate the effect of social media marketing on customer loyalty to McDonald's brand. These results can be explained by the fact that marketing strategies through social media marketing, such as making it easy for customers to get information related to McDonald's on social media, can contribute to customer trust and that trust is formed because McDonald's always pays attention to the quality of the products offered. Brand trust can mediate the influence of social media marketing on customer loyalty to McDonald's brand. This means that information related to McDonald's on social media is proportional to the quality of the product offered.

Effects of Soy Protein Hydrolysates Prepared by Varying Subcritical Media on the Physicochemical Properties of Pork Patties

  • Lee, Yun-Kyung;Ko, Bo-Bae;Davaatseren, Munkhtugs;Hong, Geun-Pyo
    • 한국축산식품학회지
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    • 제36권1호
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    • pp.8-13
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    • 2016
  • This study investigated the effect of soy protein hydrolysates (SPH) prepared by varying subcritical media on the physicochemical properties of pork patties. For resource of SPH, two different soybean species (Glycine max Merr.) of Daewonkong (DWK) and Saedanbaek (SDB) were selected. SPH was prepared by subcritical processing at 190℃ and 25 MPa under three different of media (water, 20% ethanol and 50% ethanol). Solubility and free amino group content revealed that water was better to yield larger amount of SPH than ethanol/water mixtures, regardless of species. Molecular weight (Mw) distribution of SPH was also similar between two species, while slightly different Mw distribution was obtained by subcritical media. For pork patty application, 50% ethanol treatment showed clear red color comparing to control after 14 d of storage. In addition, ethanol treatment had better oxidative stability than control and water treatment based on thiobarbituric acid-reactive substances (TBARS) analysis. For eating quality, although 20% ethanol treatment in SDB showed slightly higher cooking loss than control, generally addition of SPH did not affect the water-binding properties and hardness of pork patties. Consequently, the present study indicated that 50% ethanol was the best subcritical media to produce SPH possessing antioxidant activity, and the SPH produced from DWK exhibited better antioxidant activity than that produced SDB.

Promoting Word-of-Mouth communication: The moderating role of leisure sport social media

  • KIM, Min-Soo;Kim, Miok;HUR, Seung-Eun;SEO, Myung-Seok;SEO, Won-Jae
    • 유통과학연구
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    • 제18권4호
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    • pp.61-72
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    • 2020
  • Purpose: Usage of leisure-sport social media would lengthen and strengthen the effects of positive event experiences on WOM behavior. This study is to examine the extent to which leisure sport social media use has the moderating potential to enhance the direction of the relationship between post-event emotions and event WOM behavior. Research design, data and methodology: A running event located in a major metropolitan area in the southeastern United States was selected. Participants of the running events completed the survey. Descriptive analysis and correlations between primary variables of interest were conducted. To examine interactions within the context of moderated regression, a hierarchical regression analysis was employed. Results: The results confirmed direct effects of a sense of achievement and event satisfaction on event WOM intention, supporting H 1 and H2. In specific, result revealed that the amount of time spending on social media for running content moderated the effect of a sense of achievement on event WOM intention, supporting H3, however, H4 was rejected. Conclusions: There are managerial implications of these results, particularly which pertain to how organizers may be able to use perceived benefits (i.e., a sense of achievement and satisfaction) and social media to increase positive WOM intention.

3차원 시선 추출 및 상호작용 기법 (3D Gaze Estimation and Interaction Technique)

  • 기정석;전경원;김성규;손광훈;권용무
    • 방송공학회논문지
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    • 제11권4호
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    • pp.431-440
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    • 2006
  • 2D 영상에 대한 시선 기반 상호작용 기법으로서 시선추적 기술이 연구되고 있다. 하지만 입체영상 또는 콘텐츠에 대한 시선기반 상호작용 연구는 아직 연구된 바가 없다. 현재 3D 디스플레이 기술은 현실감 있는 서비스를 제공하고 있으며, 이러한 3D 콘텐츠를 제공하는 환경에서는 더욱 3D 상호작용 기법이 필요하다. 본 논문은 패럴랙스 배리어나 렌티큘라 방식과 같은 무안경식 3차원 입체 디스플레이 환경에서 시선기반 3차원 입체 영상 상호작용 기술에 대해 기술한다.

자기분산형 수용성 에폭시를 이용한 유구 이전용 박리제의 개발 (Development of the Water-borne Separation Media Polymer for a Moving Historic Sites)

  • 한원식;홍태기;임성진;위광철
    • 보존과학회지
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    • 제25권2호
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    • pp.171-178
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    • 2009
  • 유구 이전의 안정성은 현재 개발되어 사용되고 있는 반수용성 우레탄 1 차 전사체와 2 차 최종 에폭시 생성물의 우수한 물성으로 볼 때, 박리제의 물성과 박리성에 의해 좌우된다. 본 연구에서는 계면활성제를 사용하지 않은 세 가지 형태의 자기분산형 박리제를 합성하여 이들이 나타내는 박리성과 물성, 박리 후의 상태에 대하여 연구하고자 하였다. 이 수용성 자기 분산형 에폭시의 그 간의 박리제에서 문제시 되었던 지속 기간을 5 시간에서 60 일 이상으로 개선하였으며, 30% 수용화 이상에서 안정한 박리성을 보이고 있고, 건조 전후의 표면 색도의 변화도 없었다. 계면활성화제를 사용한 박리제와 비슷한 결과로 박리압을 나타내어 15~50 kg/$cm^2$을 나타내고 있으며, 저점도의 폴리머 사용 시, 고형분의 함량을 높이더라도 백화 현상이 발생하지 않아 저점도형 박리제로 사용이 가능한 것으로 보인다.

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