• Korean Journal of Ecology and Environment
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• v.55 no.4
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• pp.368-375
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• 2022

Gut contents analysis is essential to predict the impact of organisms on food source changes due to variations of the habitat environment. Previous studies of gut content analysis have been conducted using traditional methods, such as visual observation. However, these studies are limited in analyzing food sources because of the digestive process in gut organ. DNA metabarcoding analysis is a useful method to analyze food sources by supplementing these limitations. We sampled marine fish of Pennahia argentata, Larimichthys polyactis, Crangon affinis, Loligo beka and Sepia officinalis from Gwangyang Bay and Yeosu fisheries market for analyzing gut contents by applying DNA metabarcoding analysis. 18S rRNA v9 primer was used for analyzing food source by DNA metabarcoding. Network and two-way clustering analyses characterized the relationship between organisms and food sources. As a result of comparing metabarcoding of gut contents for P. argentata between sampled from Gwangyang Bay and the fisheries market, fish and Copepoda were analyzed as common food sources. In addition, Decapoda and Copepoda were analyzed as common food sources for L. polyactis and C. affinis, respectively. Copepoda was analyzed as the primary food source for L. beka and S. officinalis. These study results demonstrated that gut contents analysis using DNA metabarcoding reflects diverse and detailed information of biological food sources in the aquatic environment. In addition, it will be possible to provide biological information in the gut to identify key food sources by applying it to the research on the food web in the ecosystem.

• Journal of Korean Society of Forest Science
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• v.84 no.3
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• pp.286-298
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• 1995

This study was carried out to investigate the effect of forest soil acidification on the distribution of exchangeable cations($Ca^{2+}$, $Mg^{2+}$, $Al^{3+}$) and heavy metals(Cu, Zn, Mn, Pb, Cd) in soil, and to understand the relation of the soil chemical properties and the distribution of nutrients and hear metals in fine root and foliage. The results through survey on the long - term change of soil pH and the contents of nutrient and heavy metal in soil, fine root and foliage by 2 sites near Ulsan - Onsan industrial estate and 2 sites in limited development district are summarized as follows : 1. The average forest soil pH(A horizon) in Ulsan had been proceeded down to 3.73 in deciduous forest and 3.86 in coniferous forest in 1994 from 4.45 and 4.78 in 1987, respectively, which indicated serious soil acidification. As comparing soil pH among sites, Dongcheon coniferous forest(pH 4.57) in limited development district showed the highest values and Dangwol deciduous forest(pH 3.19) near Onsan industrial estate showed the lowest values in 1994. 2. Contents of exchangeable calcium in forest soils of limited development district where showed much higher soil pH than industrial estate were 3.5 times more in deciduous forest soil and 11 times more in coniferous forest soil than in industrial estate, and contents of exchangeable magnesium were also 4.5 and 5 times more in limited development district than in industrial estate, respectively. However contents of exchangeable aluminium which had been supposed more in forest soil of industrial estate were more in limited development district. 3. Contents of calcium and magnesium in fine root of deciduous trees(A hirsuta. Q. acutissima) were 3.6 and 1.7 times more in limited development district than in industrial estate, respectively, and those of coniferous trees(P. rigida, P. thunbergii) were 4.6 and 1.5 times more in Limited development district than in industrial estate, respectively. Also contents of calcium and magnesium in foliage of deciduous trees were 1.1 and 2.2 times more in limited development district than in industrial estate, respectively, and those of coniferous trees were 1.8 and 3.3 times more in limited development district, respectively. And contents of aluminium in fine root and foliage were nearly as same as in soil. 4. Ca/Al molar ratios in soil and fine root, which could be related with the dgree of soil acidification and Al toxicity on trees, were Less than 1 in all sites except Dongcheon, suggesting that the soil and fine root in the sites have high sensitivity to soil acidification and the decrease in nutrient uptake and root enlargement. The Ca/Al molar ratios in soil and fine root in coniferous forest were highly correlated with the soil pH one another. 5. Contents of Cu, Zn and Pb in soil, fine root and foliage were more in industrial estate than in limited development district in both deciduous and coniferous forests, however, oppositely contents of Mn and Cd in soil were more in limited development district than in industrial estate.

• Journal of Digital Convergence
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• v.11 no.12
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• pp.709-723
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• 2013

This study aims to diagnose the present condition of the Digital comics industry, including the "webtoon", which is receiving attention as the new Korean wave (Hallyu) cultural content, and explore ways to vitalize these contents. Considering the fact that the distribution rate of smart devices in Korea is the highest in the world as of June 2013, and that comics as contents have been known to show the easiest and fastest adaptation to changes in the media, the Digital comics industry is certainly an area with high expected growth, but its actual size of the industry shows a very low growth rate compared to other digital contents. This study analyzes the present condition of the Digital comics industry through theoretical and precedent study, and deducts 7 major factors that inhibit the growth of Digital comics industry by summing up the industry structure through making surveys of major businesses in the industry. Further, problems and possible solutions of the digital comics industry are discussed through in-depth interviews with total 10 digital comics industry experts. Building a ecosystem based charged service, realizing a total management system, government support and improvements on restrictions are discussed as solutions to a sustained growth of the Digital comics industry.

• Cartoon and Animation Studies
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• s.41
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• pp.487-510
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• 2015

In recently, thanks to the development of computer and internet, and reinforcement of digital media literacy of ordinary people, many users of comics and animations recombine contents into various ways, including UCCs. In a glance, it seems these outputs violates the copyrights of contents. But in reality, they helps the growth of the ecosystem of contents market, with increase of contents users. The reason of these reproductions inclines the characteristics of animation media. Animation, which are constituted by plastic symbols, auditory symbols, and narrative symbols, and Comic, which supports stories of Animations, affects as 'Imaginary signifier'. These signifiers helps users of contents to dismantle and reassemble stories. These aspects are seen in doujin culture, animation soundtrack fandom, and voice actor fandom. But In this article, we will concentrate into cosplay culture. Cosplay culture shows more active appearances than another fandoms. In especially, cosplay stage and daily cafe show more active reproductions of characters and communications. However, they are done by youth fans, which has not enough financial abilities: therefore, events are not sustainable and discontinued. And they have another limits, like lack of opportunity of performance. In the reality of Korean society, which needs of community making by community member, and hybrid culture, comics and animation productions in Korea are in need of access positively and encourage reproductions of active receivers of animations.

• Journal of the Korean BIBLIA Society for library and Information Science
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• v.34 no.1
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• pp.209-238
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• 2023

This study aims to propose the main learning contents, functions and activation plans for building an e-learning platform for libraries through a literature review, case analysis and expert survey. Through the literature review, it was found that libraries must play a role in providing high-quality online education for users in the e-learning ecosystem. Based on the previous studies, a learning function analysis tool was developed for the analysis of the library's e-learning platform. Based on this, the learning contents, learning functions and characteristics of library e-learning platforms were analyzed, and expert surveys and interviews were conducted. As a results, the construction of a platform for effectively applying learning processes and technology is essential for the library's sustainable e-learning services. The contents that should be provided for characteristics of library education, reading guidance, information literacy instruction, library usage instruction, and the latest IT technologies. And The main learning functions include the ability to conduct video lectures and real-time classes among learning types, and learning activity support functions, a cloud platform support function and a personalized environment support function. Additionally, suggested re-education for library staff to improve their technical skills and the formation of an e-learning team.

• Korean Journal of Soil Science and Fertilizer
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• v.29 no.2
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• pp.199-206
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• 1996

Vegetation succession and changes in soil chemical properties were investigated in 10 abandoned rice fields in Kyunggi Province in 1995. Annual weeds were dominant at the first year of abandonment, later on Perennial weeds became dominant as the period of abandonment progressed. The number of Salicaceae(willow family) increased rapidly as the abandonment period further progressed. In cultivated fields, soil pH and cation contents are slightly higher in subsurface layer than surface layer. In abandoned fields, however, pH of surface layer was getting higher than subsurface soil layer with the lapse of time. Similar trends were observed in case of exchangeable Ca and Mg contents.

• Journal of Digital Contents Society
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• v.18 no.6
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• pp.1213-1216
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• 2017

Recently due to the increasing uncertainty of the disaster environment caused by climate change the effects of disasters have become larger due to the confluence and solidification diversification into disaster type and secondary damage. In this paper, we apply ICBMS through intelligent information technology and big data analysis to all processes of disaster safety management to minimize human, social, economic and environment damage from accidents or disasters, and prevention by control technology preparation by education and training expansion to remember by body, response by advanced technology of disaster response unmanned technology restoration by creation of local community environment ecosystem, investigation and analysis by intelligent information technology learn about disaster safety management 4.0. In addition, technical limitation and problems in the $4^{th}$ industrial revolution and the application of big data were analyzed and suggested alternatives and strategies to overcome.

• KSBB Journal
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• v.27 no.4
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• pp.243-250
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• 2012

The ash content, mineral composition, total phenolics, antioxidant capacity, and neuroprotective effect of the antlers of deer fed with herb-incorporated feedstuff (HFS) or normal feedstuff (NFS) were comparatively evaluated. The contents of ash and mineral of the antler of deer fed with HFS were significantly lower than its counterpart. The ash and mineral contents of deer antlers decreased generally from the upper section toward the tip section. The ratios of Ca/ash, Ca/P, and Ca/Fe of antler of deer fed with HFS were lower than those of antler of deer fed with NFS. Antlers of deer fed with HFS had higher total phenolics, nitrite scavenging capacity, and antioxidant capacity than those of deer fed with NFS. Antlers of deer fed with HFS or NFS showed in vitro neuronal protection of PC-12 cells against oxidative stress in a dose-dependent manner, where antler of deer fed with HFS generally had higher cellular viability than NFS. These results above suggest that the incorporation of the medicinal herbal complex into feedstuff may improve the biological effects of deer antlers.

• The Journal of the Korea Contents Association
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• v.13 no.10
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• pp.470-479
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• 2013

This study analyzed the features and problems of one-person creative company development policy by using the image of brand identity of one-person creative company and the model of the symbol square. In order to solve the youth unemployment and to induce youth foundation, Korean government particularly Small and Medium Business Administration (SBA) paid great attention to 'One-Person Company' followed by One-Person Knowledge Company policy in 2008. Finally, this policy became One-Person Creative Company in 2009 when SBA faced criticism. However, according to semiotics analysis, symbolic conflicts were found in the policy given that this policy was not considered the role of the co-founder in venture ecosystem. This study provides practical implications for new directions of the one-person creative company policy of government; (1) one-person knowledge company ${\rightarrow}$ (2) one-person creative company ${\rightarrow}$ (3) 1+1 creative company.

• The Journal of the Korea Contents Association
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• v.14 no.6
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• pp.44-53
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• 2014

This study seeks to analyze vertical integration structure of Korean popular music market focused on corporation concentration and production system by applying production of culture perspective of Peterson, Subject of analysis is Melon weekly music chart(2000-2013), which is No.1 digital music distributor. The result showed vertical integration structure of Korean popular music industry was different from America. Vertical integration of American major was based on open system to be responsible for promotion and distribution by M&A of independent label but entrusted them-with total production to cope-with uncertainty of music market. On the other hand, Korean system was in charge of pure distribution only as digital service provider and it showed modified vertical structure because traditional value chain was destroyed by changing digital music environment. Especially found seriousness of oligopoly by distribution company of conglomerate affiliation. and this is harm against building healthy industry ecosystem in creative economy era and it needs improvement through study of advanced case, open system.