• International journal of advanced smart convergence
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• 제6권2호
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• pp.34-50
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• 2017

This study delved into the effects of labor union members' social media utilization for the formation of labor union social capital. Specifically, this study aimed to identify the effects of labor union-related social media use and participation on the labor union's social capital formation through quantitative and qualitative research. It set up trust, network, and participation as social capital components and as dependent variables. Network, in particular, was divided into bonding and bridging aspect. There is the correlation between labor union-related social media use and the formation of labor union social capital. As participation in the group type social media operated by a labor union becomes more active, evaluation on labor union social capital throughout trust, network, and participation is higher. Especially, the correlation between bonding network and bridging network was high. This proves that a labor union's bond enhancement does not result in the labor union's selfishness, but it can build a cooperative system with an external network.

• Plant Resources
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• 제1권2호
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• pp.98-104
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• 1998

The effects of basal media, sucrose and phytohormone concentrations, and gelling agent combinations on in vitro frond proliferation of Lemna gibba G3 and 24 additional Lemna gibba strains were examined. Frond proliferation was equivalent on Schenk and Hidebrand. Murashige and Skoog. Nitsch and Nitsch, and Gamborg's B5 media and poor on murashige and Skoog medium in the absence of benzyladenine. With the addition of benzyladenine, Schenk and Hildebrand and Gamborg's B5 Were superior and equivalent. The addition of benzuyladenine increased equally frond proliferation at either 1 or $10{\mu}M$, however at $10{\mu}M$ fronds were severely curled or fused. Benzyladenine and thidiazuron suppressed root growth but kinetin was found to greatly enhance root growth. Gibberellic acid inhibited frond proliferation. Frond proliferation was significantly different on the four sucrose concentrations of 0, 1, 3, and 5% Among them, 3% sucrose was found to be superior. The reduced frond size observed in cultures grown on 8% sucrose could be explained by showing medium osmotic potential in excess of frond water potential. Gell agents also varied significantly in their ability to promote frond proliferation with 0.25% Gelrite or a mixture of 0.15% Gelrite and 0.4% agar. Proliferation of 25 Lemna gibba strains on medium neat optimal for Lemna gibba G3 showed a six-fold variation across strains with Lemna gobba G3 placing in the top 5 fastest proliferating strains.

• 과학교육연구지
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• 제38권1호
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• pp.205-229
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• 2014

The purposes of this study were to explore what components of science communication and its level are contained in text panels of exhibitions in natural history museums and to propose its development direction of exhibition education in Korea. First, to find out the component and level of science communication contained in exhibition panels, the researcher team developed the analyzing tool which was called SEPAT (Science Exhibition Panel Analyzing Tool), then employed them to profile the component and level of science communication. Second, the researchers introduced the exemplary designed media of exhibitions to demonstrate how much science communication could be enhanced. The results were made as follows. First, the components of science communication was considerably weighted toward to 'concept' one. There were also a few 'awareness' and 'engagement', both of which were under 5% in each zone of exhibition and there was not 'NOSI' or 'opinion' embedded in the analyzed exhibitions. Second, the various type of designing exhibitions were found to promote or enhance the restrictedly represented components of science communication. It is suggestable for exhibitions to be designed through various type of 'media' to enhance science communication. Visitors are required to experience rich science communication to meet their educational needs, and exhibition developers in natural history museums and other museums are recommended to be professional in containing all components of science communication through various type of designing exhibitions.

• 한국콘텐츠학회논문지
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• 제13권4호
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• pp.115-124
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• 2013

본 연구에서는 방송 제작현장을 가장 충실히 담고 있는 월간 <방송문화>와 의 주제어 분석을 통해 제작체계의 구성요소를 분석했다. 분석 결과, 월간 <방송문화>의 경우, 편성 제작 중심에서 점점 방송에 영향을 미치는 중요한 요소들인 제도 정책, 산업, 기술에 대해 관심을 높여왔다는 것을 확인했다. 의 경우, 제도 정책, 조직, 편성 제작, 단체행동의 순서대로 높은 빈도를 나타냈다. 두 매체의 다소 상이한 성격에도 불구하고, 제도 정책, 산업, 기술, 조직이 편성 제작을 둘러싼 담론의 중요한 요소라는 것을 확인할 수 있었다.

• 기록학연구
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• 제65호
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• pp.111-150
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• 2020

일명 '소통의 혁명'으로 불리는 소셜미디어는 현대사회의 주요한 소통과 서비스 수단으로 자리매김 한다. 기존의 미디어와는 다르게 쌍방향적인 정보의 전달이 가능하다는 장점은 이미 개인 간의 이용 차원을 넘어 정부 차원에서도 활용을 위한 노력을 지속하고 있다. 실제 우리나라 지방자치단체에서는 다양한 목적을 가지고 하나 이상의 소셜미디어를 운영하고 있으며, 이를 통해 자치단체의 정책을 홍보하거나 지역주민을 대상으로 신속한 정보를 전달하고 있다. 이러한 소셜미디어 기록은 공공의 업무 수행을 바탕으로 하고 있으며, 기록으로 관리되어야 한다. 그러나 현재 공공 기록관리의 영역에서 소셜미디어 기록관리를 위한 법적 기반이 미미하여 각 지방자치단체에서는 기록관리의 필요성을 인식하지 못하고 있다. 지방자치단체에서 운영하는 소셜미디어는 그 유형도 다를 뿐만 아니라 표준화된 지침으로 관리되기가 어렵다. 그럼에도 불구하고 소셜미디어 기록을 관리하고 보존하기 위한 최소한의 지침 마련이 필요하다. 본 연구는 이 점에 주목하여 소셜미디어 기록관리 지침 마련 시 최소한의 공통 요소를 도출하는데 목적을 둔다. 이를 위하여 이미 소셜미디어를 체계적으로 관리하고 있는 선진 국가가 제정하고 있는 지침 및 정책을 분석하였으며, 공통적으로 포함하고 있는 항목과 특징을 도출하였다. 또한 실제 소셜미디어 기록을 수집하여 운영하고 있는 아카이브와 비교하여 지침의 적용 여부를 확인하였다. 이 연구는 실제 소셜미디어 아카이브 운영 현황을 통해 지방자치단체 소셜미디어 기록관리를 위한 지침 개발에 포함되어야 할 구성요소를 제안하였다는 점에서 의의가 있다.

• 한국재료학회지
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• 제31권5호
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• pp.286-295
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• 2021

This study attempts to find optimal conditions of the friction coefficient using a discrete element method (DEM) simulation with various friction coefficient conditions and three different grinding media with various ball sizes in a traditional ball mill (TBM). Using ball motion of the DEM simulation are obtained using the optimal friction coefficient compared with actual motion; photographs are taken by the digital camera and the snapshot images are analyzed. In the simulation, the rotation speed of the mill, the materials and velocity of the grinding media, and the friction coefficient between the balls and the wall of the pot are fixed as the actual experimental conditions. We observe the velocity according to the friction coefficient from the DEM simulation. The friction coefficient is found to increase with the velocity. Milling experiments using a traditional ball mill with the same experimental conditions as those of the DEM simulation are conducted to verify the simulated results. In addition, particle morphology change of copper powder is investigated and analyzed using scanning electron microscopy (SEM) for the milling experiment.

• 대한방사선기술학회지:방사선기술과학
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• 제44권1호
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• pp.47-52
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• 2021

The incidence of adverse reactions to iodide contrast media was found to have increased owing to their increased use in computed tomography, but the exact reasons were unknown. Based on reported iodide contrast media adverse reactions data, it is recommended to the components of iodide contrast media before use to minimize adverse reactions. It was found that the use of iopromide and iomeprol in iodide contrast media resulted in a higher incidences of death and threat of life resulting from adverse reactions than other ingredients. Patients who are administered iodide contrast media containing iopromide and iomeprol during the computed tomography test should be carefully examined by the relevant medical professional, as the significance of gender and age varies from component to component. As multiple iodide contrast agents are available, the use of an appropriate iodide contrast media will reduce the incidence of iodide contrast media adverse reactions.

• 한국실내디자인학회논문집
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• 제22권3호
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• pp.70-80
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• 2013

This study aims to discover characteristics of interaction through media artistic space, a field of media investigation, for understanding interaction which represents the age of new media and a view on development of interaction which plays a bigger role in it. To achieve this, a research infrastructure was prepared by having access to expression components of which media are applied in a context of art history on media art. Further, physical interaction, perceptual interaction, and mediational interaction were derived by presenting interaction discussed in the existing various areas from an integrated perspective. Subsequently, in order to understand the contents of interaction and its activity, cases were analyzed through analytic frames consisting of interaction elements of subordinate concepts which each interaction has. For results derived from the research, interaction characteristics of media serve as a leading role in space as they are actively used as a potential tool. Therefore, although interaction has been variously represented, it forms a relationship focused on participants, and in order to build a closer relationship with the participants and further interaction, it will be possibly developed in a manner of thinking.

• 한국미생물·생명공학회지
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• 제7권1호
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• pp.37-46
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• 1979

나왕과 소나무배지에서 느타리버섯 재배기간 중 배지의 성분변화를 파악하기 위하여 종균접종시부터 수확이 끝나는 폐상시까지의 두 가지 배지와 버섯의 여러가지 성분을 분석하여 다음과 같은 결과를 얻었다. 1) 느타리버섯의 전체수량은 나왕배지에서 6.39kg/$m^2$, 소나무배지에서 6.31kg/$m^2$이었고, 양배지 모두 94% 1, 2주기에서 얻어졌다. 2) 재배기간중 양배지의 회분량은 증가 되었으나 유기물은 감소되었으며 수분은 종균접종시 약 79%이던 것이 균사번식기간 중에 다소 감소되었고 그 이후부터는 큰 변화가 없었다. 3) 두 가지 배지의 전질소는 점차적으로 감소되었고 불용성질소의 절대감소량은 수용성 질소보다 컸으며 아미노태 질소는 계속 증가의 추세를 보이었다. 4) 두 가지 배지에서 pentosan, $\alpha$-cellulose, lig-nin 및 C/N율은 점차적으로 감소되었고 환원당, trehalose, mannitol은 계속 증가의 추세를 보이었다. 5) 두 가지 배지에서 P, K, Mn, Zn은 감소되었고, Mg, Ca, Fe, Cu는 불규칙하게 변화되었다. 6) 재배기간중 CMC 당화활성과 CMC 액화활성은 균사번식후부터 2주기 수확까지는 두 가지 배지에서 점차적으로 증가되었으나 그 이후부터는 감소되었다. Xylanase활성은 1주기보다 2주기에서 급격히 상승되었고 3주기부터는 서서히 감소되었으며, protease 활성은 균사번식 후 최고의 활성도를 보였다가 점차로 감소하였다. 또한 배지의 pH는 재배기간에 걸쳐 다소 감소되었다. 7) 두 가지 배지에서 버섯의 각 주기별 성분변화는 1~3주기까지는 거의 비슷하였으나 4주기에서는 다소 감소의 추세를 보였다.

• Journal of Ginseng Research
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• 제4권2호
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• pp.133-145
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• 1980

In order to find out the inhibitors of acetic acid fermentation in Korean ginseng (Panax Sin son C. A. Meyer), total aglycone, panaxadiol, panaxadiol, oleanolic acid and ${\beta}$ -sitosterol were added to the basal medium, respectively, and a surface culture was carried out at 30$^{\circ}C$. The results were as follows: 1 . Saponins lost their activity to inhibit the acetic acid fermentation by hydrolysis. 2 Panaxadiol inhibited slightly, and the degree of inhibition was about 1/300 of that of free saponins. 3. Panaxadiol and oleanolic acid inhibited silighly similar to total aglycone. 4. Acetic acid fermentation was stimulated at the early stage when ${\beta}$-sitosterol was added to the media below the level of 0.000815%. But the fermentation was inhibited when media contained it more than that media 5. An over-oxidation of acetic acid was observed when the media contained total aglycone. panaxadiol, panaxatriol, oleanolic acid and ${\beta}$-sitosterol, respectively, while the media which contained sucrose, ginseng extracts ginseng saponins was shown not to be over-oxidized.