• Journal of Species Research
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• 제9권4호
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• pp.492-531
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• 2020

This study is based on crane fly specimens collected from 1936-2019 and are in collections maintained at the United States National Museum, Smithsonian Institution, Washington DC, USA; the Snow Entomological Museum, University of Kansas, Lawrence, KS, USA; the Hungarian Natural History Museum in Budapest, Hungary, and the National Institute of Biological Resources, Incheon, South Korea. The genus Dicranophragma Osten Sacken, 1860 with two species D. (Brachylimnophila) transitorium (Alexander, 1941) and D. (Dicranophragma) melaleucum melaleucum (Alexander, 1933), is a new record for the Korean Peninsula. New findings of Dicranomyia (Erostrata) submelas Kato et al., 2018, Dicranoptycha venosa Alexander, 1924a, Austrolimnophila (Archilimnophila) subunicoides(Alexander, 1950b), A. (A.) unica (Osten Sacken, 1869), A. (Austrolimnophila) asiatica (Alexander, 1925), Conosia irrorata (Wiedemann, 1828), Eloeophila persalsa (Alexander, 1940), E. serenensis (Alexander, 1940), E. subaprilina (Alexander, 1919), E. ussuriana ussuriana (Alexander, 1933), E. yezoensis (Alexander, 1924b), Paradelphomyia chosenica Alexander, 1950b, and P. macracantha Alexander, 1957 are discussed. General information on genera and subgenera morphological characters, redescriptions of species based on Korean specimens, illustrations of both sexes, elevation range, period of activity, habitat information, general distribution, and a distribution map for the Korean Peninsula (including North Korea) are presented for each species.

• International Journal of Computer Science & Network Security
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• 제23권6호
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• pp.13-16
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• 2023

This study aims to explore the status of e-learning in the public sector institutes of the Sukkur region in Pakistan. A survey was conducted to collect data from students and teachers regarding their awareness, access, and use of e-learning resources. The results showed that although there is a widespread use of the internet and mobile devices for accessing information, there is a lack of awareness and access to e-learning resources. Barriers to accessing e-learning content and a lack of familiarity with e-learning content development technologies were also identified. The study concludes that there is a need for improved e-learning facilities and curriculum in the public sector institutes of the Sukkur region in Pakistan. Recommendations are provided for developing a correctness-centered e-learning based curriculum that is tailored to the specific needs of the students in the region. It is hoped that the findings of this study will inform efforts to improve the teaching and learning process in the region and provide students with greater flexibility and access to study materials.

• Animal Systematics, Evolution and Diversity
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• 제40권1호
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• pp.42-46
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• 2024

Two species from the genus Escharoides Milne Edwards, 1836, E. biseriatata and E. buffonellarioides n. sp. Were first found in Korean waters in this study. Their colonies were collected from two locations in the South Sea, Korea: Tongyeong Marine Ranch in 2004 and Daebyeon Port in 2009. Escharoides biseriatata shows a difference in the position of avicularia from the Chinese specimens. While avicularia are lateral to the orifice in Chinese specimens, the ones in Korean specimens seem to be located more latero-proximally. Since Escharoides biseriatata was reported as fouling bryozoans in China in 2001, this species first occurred at Daebyeon Port in Korea in this study. Escharoides buffonellarioides n. sp. is similar to E. adeonelloides in morphological features of zooids but is clearly distinguished by having the erect colonial form of small masses. With the addition of two species reported herein, four Korean Escharoides are recorded: E. biseriatata, E. buffonellarioides, E. excavata, and E. sauroglossa.

• 정보관리연구
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• 제34권2호
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• pp.25-53
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• 2003

도서관은 끊임없는 변화로 다양한 자원을 받아들이고 수용하고 있다. 전자자원은 도서관의 중요한 자원으로 자리잡고 있으며, 최근에 나타난 전자책은 새로운 가능성을 지닌 자원으로 주목받고 있다. 이에 본 연구에서는 전자책의 출현 배경과 특성에 대하여 고찰하였으며, 도서관자원으로서 전자책이 가지는 기능과 문제점 그리고 이로 인한 도서관 서비스 변화에 관하여 분석하였다. 또한 국내 대학도서관의 전자책 이용실태와 발전방안에 관한 설문분석을 하여 문제점과 대안을 제시하고자 하였다.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제15권7호
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• pp.2377-2398
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• 2021

In the recent modernized world, utilization of natural resources (renewable & non-renewable) is increasing drastically due to the sophisticated life style of the people. The over-consumption of non-renewable resources causes pollution which leads to global warming. Consequently, government agencies have been taking several initiatives to control the over-consumption of non-renewable natural resources and encourage the production of renewable energy resources. In this regard, we introduce an IoT powered integrated framework called as green home architecture (GHA) for green score calculation based on the usage of natural resources for household purpose. Green score is a credit point (i.e.,10 pts) of a family which can be calculated once in a month based on the utilization of energy, production of renewable energy and pollution caused. The green score can be improved by reducing the consumption of energy, generation of renewable energy and preventing the pollution. The main objective of GHA is to monitor the day-to-day usage of resources and calculate the green score using the proposed green score algorithm. This algorithm gives positive credits for economic consumption of resources and production of renewable energy and also it gives negative credits for pollution caused. Here, we recommend a green score based tax calculation system which gives tax exemption based on the green score value. This direct beneficiary model will appreciate and encourage the citizens to consume fewer natural resources and prevent pollution. Rather than simply giving subsidy, this proposed system allows monitoring the subsidy scheme periodically and encourages the proper working system with tax exemption rewards. Also, our GHA will be used to monitor all the household appliances, vehicles, wind mills, electricity meter, water re-treatment plant, pollution level to read the consumption/production in appropriate units by using the suitable sensors. These values will be stored in mass storage platform like cloud for the calculation of green score and also employed for billing purpose by the government agencies. This integrated platform can replace the manual billing and directly benefits the government.

• 수산경영론집
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• 제34권1호
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• pp.87-115
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• 2003

Korean fisheries societies have had many difficulties for economic, social, and living circumstances. The government has tried many projects to improve these circumstances. But the results of the projects did not come up to his expectation. Recently, blue tourism is emerging as an alternative for improving these circumstances. So we applied a tourism value chain model for identifying what value activities and resources needed. According to the tourism value chain model, it was identified that there were six different value activities, i. e. advertising, reserving, moving, experiencing, returning, and after services of blue tourism. To identify which of the resources are sufficient or not in Korean blue tourism, we compared the required resources with actual ones. It was identified that Korean fisheries societies have so sufficient H/W related resources, but not IT related S/W resources, humanware-based resources, some industrial H/W resources and sociocultural resources. Therefore, Korean blue tourism will be activated, we have to concentrate our efforts on supplementing some scant blue tourism resources, i.e. S/W and humanware related resources and developing a variety of tourism programs to H/W resources. Generally, sustainable tourism needs all of S/W, H/W, and humanware resources. So we suggest several policies for the aspects of S/W, H/W, and humanware resources to activate blue tourism. But before carrying these policies out, they should be tested by field studies. And tourism motivations will be also studied because effective tourism marketing is impossible without an understanding of consumers' motivations.

• 대한환경공학회지
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• 제36권2호
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• pp.139-146
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• 2014

구리 및 알루미늄의 1차가공제품을 제조함에 있어 2차자원(스크랩)의 사용 및 미사용 시 발생되는 환경부하량을 전과정평가(LCA)기법을 적용하여 정량화하고, 환경에 미치는 영향을 8가지 환경영향범주로 나누어 환경부하를 분석하였다. 또한 구리 및 알루미늄의 자원순환율이 증가할 경우 동일한 1차가공제품생산 단계에서 발생되는 온실가스 발생량을 국내범위와 전지구적범위로 분석하였다. 그 결과 구리의 경우 1차가공제품 1 ton 생산 시 2차자원의 사용 및 미사용 시 전체 환경범주에 대한 환경영향은 각각 6.09E + 01 person-yr/f.u. 및 7.23E + 01 person-yr/f.u.로 나타났으며, 온실가스 발생량은 국내범위 및 전지구적범위 모두 자원순환율이 증가함에 따라 저감되는 것으로 조사되었다. 알루미늄의 경우 1차가공제품 1 ton 생산 시 2차자원의 사용 및 미사용 시 전체 환경범주에 대한 환경영향은 각각 2.34E + 02 person-yr/f.u. 및 3.01E + 02 person-yr/f.u.로 나타났으며, 온실가스 발생량은 국내범위에서는 자원순환율이 감소함에 따라, 전지구적범위에서는 자원순환율이 증가함에 따라 저감되는 것으로 조사되었다.

• 한국자원식물학회지
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• 제30권1호
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• pp.1-7
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• 2017

본 연구는 항암 단백질로 알려진 lunasin peptide의 산업적 활용성을 높이고자 lunasin peptide를 생산할 수 있는 시스템을 개발하고, 생산된 lunasin peptide가 식물유래 lunasin peptide의 생리활성을 가지는지 chromatin binding 활성과 histone acetylation 억제활성을 통해 평가하였다. 그 결과 E. coli와 P. pastoris를활용하여 재조합 lunasin peptide를 생산했으며, 생산 된 재조합 lunasin 펩타이드가 식물유래 lunasin peptide의 chromatin binding 활성과 histone acetylation 억제활성을 나타냄을 확인할 수 있었다. 따라서, 본 실험 연구의결과를 토대로 lunasin 펩타이드의 대량생산이 진행된다면 천연물 유래 생리활성 물질로서 효과적이면서도 안전한 기능성 식품소재로의 산업적 활용이 가능할 것으로 기대된다.

• Journal of Microbiology and Biotechnology
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• 제29권8호
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• pp.1177-1183
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• 2019

Grapefruit seed extract (GSE) is a safe and effective preservative that is used widely in the food industry. However, there are few studies addressing the anti-biofilm effect of GSE. In this study, the anti-biofilm effect of GSE was investigated against biofilm-forming strains of Staphylococcus aureus and Escherichia coli. The GSE minimum inhibitory concentration (MIC) for S. aureus and E. coli were $25{\mu}g/ml$ and $250{\mu}g/ml$, respectively. To investigate biofilm inhibition and degradation effect, crystal violet assay and stainless steel were used. Biofilm formation rates of four strains (S. aureus 7, S. aureus 8, E. coli ATCC 25922, and E. coli O157:H4 FRIK 125) were 55.8%, 70.2%, 55.4%, and 20.6% at $1/2{\times}MIC$ of GSE, respectively. The degradation effect of GSE on biofilms attached to stainless steel coupons was observed (${\geq}1$ log CFU/coupon) after exposure to concentrations above the MIC for all strains and $1/2{\times}MIC$ for S. aureus 7. In addition, the specific mechanisms of this anti-biofilm effect were investigated by evaluating hydrophobicity, auto-aggregation, exopolysaccharide (EPS) production rate, and motility. Significant changes in EPS production rate and motility were observed in both S. aureus and E. coli in the presence of GSE, while changes in hydrophobicity were observed only in E. coli. No relationship was seen between auto-aggregation and biofilm formation. Therefore, our results suggest that GSE might be used as an anti-biofilm agent that is effective against S. aureus and E. coli.

• 한국산업정보학회논문지
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• 제11권5호
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• pp.53-61
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• 2006

우리나라는 지하자원이 부족한 반면 가공무역과 수출을 경제성장의 주요한 동력으로 하기 때문에 항상 산업원자재의 수급에 신경을 곤두세울 수밖에 없다. 이러한 현실은 국내 외 산업원료광물의 조기확보와 효율적인 상거래를 지원하기 위한 기업 간 전자상거래의 중요성을 크게 부각시킬 수 있다. 우리나라는 세계적 정보통신 강국으로 간주되지만 산업별 정보화 수준의 편차가 매우 크며 비금속 산업원료 광물 분야의 경우 정보화수준이 매우 낮다. 비금속 산업원료광불 분야는 아직까지 시장의 효율성이나 다양성 그리고 원가절감을 위한 노력이 매우 부족하며 원료광물의 대부분을 수입하면서 아직까지도 시장의 효율성을 이용하지 못하여 낭비되는 외화가 매우 많은 것으로 나타났다. 따라서 본 연구는 정보기술의 활용수준이 매우 낮은 비금속 광산업분야에 B2B 공적 e-Marketplace 를 구축하여 국내에서 생산이 가능하고 품질이 뛰어나며, 부가가치가 높은 광물들은 국내의 수요처 발굴을 통해 거래활성화를 도모하고 국내에서 생산되지 않거나 품질이 낮아 부가가치를 기대할 수 없는 광물들은 시장정보와 다양한 수입처 정보를 활용하여 효율적 시장거래를 지원할 수 있는 e-Marketplace 프레임워크를 제공하는 것을 목적으로 한다.