• 유통과학연구
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• 제16권11호
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• pp.21-27
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• 2018

Purpose - This study investigates the financial ratio of savings banks and the effect of the ratio having influence upon bankruptcy by quantitative empirical analysis of forecast model to give material of better management and objective evidence of management strategy and way of advancement and risk control. Research design, data, and methodology - The author added two growth indexes, three fluidity indexes, five profitability indexes, and four activity indexes CAMEL rating to not only the balance sheets but also the income statement of thirty savings banks that suspended business from 2011 to 2015 and collected fourteen financial ratio indexes. IBMSPSS VER. 21.0 was used. Results - Variables having influence upon bankruptcy forecast models included total asset increase ratio and operating income increase ratio of growth index and sales to account receivable ratio, and tangible equity ratio and liquidity ratio of liquidity ratio. The study selected total asset operating ratio, and earning and expenditure ratio from profitability index, and receivable turnover ratio of activity index. Conclusions - Financial supervising system should be improved and financial consumers should be protected to develop saving bank and to control risk, and information on financial companies should be strengthened.

• 한국패션뷰티학회지
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• 제4권4호
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• pp.81-86
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• 2006

Numerous novel ingredients have been introduced for the hight functionality of whitening cosmetics. Tough the preliminary research, we have found water extracts Bombyx mori have high whitening efficacy. The results of the research for the whitening effect of Bombyx Mori L. are as follow 1. Bombyx Mori L. inhibited concentration dependently the generation of melanin increased by the stimulation of $\alpha$-MSH and protoporphyrin IX, and $IC_{50}$ value was 8.3, 9.2 ${\mu}M$ respectively. 2. Melanin increased by the stimulation of $\alpha$-MSH and protoporphyrin IX was five to seven times superior in the inhibiting effect, compared with kojic acid used as positive control group. 3. Bombyx Mori L. did not have a decolorizing effect on melanin already generated. 3. Bombyx Mori L. was observed to have toxicity of over 100 ${\mu}M$ for the mouse melanoma B16 cells. Therefore, These results suggest that water extracts of Bombyx mori have inhibitory activity against mushroom tyrosinase and inhibitory activity of melanin synthesis in B16 melanoma cells in vitro.

• Journal of Electrochemical Science and Technology
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• 제8권3호
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• pp.169-182
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• 2017

Iron and nitrogen codoped carbon (Fe-N/C) catalysts have emerged as one of the most promising replacements for state-of-the-art platinum-based electrocatalysts for oxygen reduction reaction (ORR) in polymer electrolyte fuel cells. During the last decade, significant progress has been achieved in Fe-N/C catalysts in terms of ORR activity improvement and active site identification. In this review, we focus on recent efforts towards advancing our understanding of the structure of active sites in Fe-N/C catalysts. We summarize the spectroscopic and electrochemical methods that are used to analyze active site structure in Fe-N/C catalysts, and the relationship between active site structure and ORR activity in these catalysts. We provide an overview of recently reported synthetic strategies that can generate active sites in Fe-N/C catalysts preferentially. We then discuss newly suggested active sites in Fe-N/C catalysts. Finally, we conclude this review with a brief future outlook.

• Natural Product Sciences
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• 제5권1호
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• pp.1-6
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• 1999

This study was devised to observe the antitumor activity of mugwort (Artemisia princeps Pampan.) against ICR mice inoculated with sarcoma-180 cells. The antitumor compounds were partially purified from petroleum ether extract of mugwort by silicic acid column chromatography. The active fraction used in in vivo test was obtained under the elution with acetone in silicic acid column chromatography. When the acetone fraction was intraperitoneally injected to the mice which had been subcutaneously inoculated on the left groin with sarcoma-180, the growth rate of tumor (sarcoma-180 mass) was inhibited by 30%. In case the acetone fraction was injected to the mice which had been inoculated intraperitoneally with sarcoma-180, the average life span was prolonged by 20%. After the injection of the active fraction, the spleen index and ${\gamma}-globulin$ ratio (%) were increased significantly (p<0.05). The administration of acetone fraction did not cause any abnormality in the body and the homeostasis of mice. Those observations suggest that the acetone fraction of mugwort extract has an antitumor effect in vivo.

• 전기전자학회논문지
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• 제24권2호
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• pp.523-528
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• 2020

스마트 모바일 장치의 확산은 인간의 일상 행동 분석을 보다 일반적이고 간단하게 만들었다. 행동 분석은 이미 본인 인증, 감시, 건강 관리 등 많은 분야에서 사용 중이고 그 유용성이 증명되었다. 본 논문에서는 스마트폰의 가속도 센서 신호를 사용하여 효율적이고 정확하게 행동 인식을 수행하는 합성곱 신경망(모델 A)과 순환 신경망까지 적용한(모델 B) 심층 신경망 모델을 제시한다. 모델 A는 batch normalization과 같은 단순한 기법만 적용해도 이전의 결과보다 더 작은 모델로 더 높은 성능을 달성할 수 있다는 것을 보인다. 모델 B는 시계열 데이터 모델링에 주로 사용되는 LSTM 레이어를 추가하여 예측 정확도를 더욱 높일 수 있음을 보인다. 이 모델은 29명의 피실험자를 대상으로 수집한 벤치마크 데이트 세트에서 종합 예측 정확도 97.16%(모델 A), 99.50%(모델 B)를 달성했다.

• 문화기술의 융합
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• 제1권4호
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• pp.65-69
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• 2015

본 연구는 안드로이드 스마트폰에서 최신 문화 관람 및 정보를 제공하는 App을 개발하여 사용자가 문화생활을 즐기고자 할 때 이 DB를 사용하여 각 뮤지컬, 연극, 영화 별로 사용자가 원하는 정보를 검색하여 열람할 수 있고 또한 리뷰 등록 및 열람이 가능하다. 또한 관리자는 관리자(Administrator)모드로 로그인하여 문화 정보를 관리하고 사용자들의 정보를 확인할 수 있게 함으로써 시스템 관리를 원활이 이루어지게 한다. 또한 사용자는 사용자(User)모드로 로그인을 하여 문화 정보를 열람할 수 있고, 감상평을 기록하고 친구그룹의 추천기능을 통해 신뢰할만한 공연정보를 확인하여 여가생활을 문화 활동으로 즐길 수 있도록 한다.

• 한국대기환경학회지
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• 제21권3호
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• pp.315-327
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• 2005

The total of 35 target VOCs (volatile organic compounds), which were included in the TO-14, was selected to develop a VOCs' source profile matrix of the Yeosu Petrochemical Complex and to test its collinearity by singular value decomposition(SVD) technique. The VOCs collected in canisters were sampled from 12 different sources such as 8 direct emission sources (refinery, painting, wastewater treatment plant, incinerator, petrochemical processing, oil storage, fertilizer plant, and iron mill) and 4 general area sources (gasoline vapor emission, graphic art activity, vehicle emission, and asphalt paving activity) in this study area, and then those samples were analyzed by GC/MS. Initially the resulting raw data for each profile were scaled and normalized through several data treatment steps, and then specific VOCs showing major weight fractions were intensively reviewed and compared by introducing many other related studies. Next, all of the source profiles were tested in terms of degree of collinearity by SVD technique. The study finally could provide a proper VOCs' source profile in the study area, which can give opportunities to apply various receptor models properly including chemical mass balance (CMB).

• Bulletin of the Korean Chemical Society
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• 제30권11호
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• pp.2739-2748
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• 2009

Hologram and three dimensional quantitative structure activity relationship (3D QSAR) studies for a series of anilinobipyridine JNK3 inhibitors were performed using various alignment-based comparative molecular field analysis (COMFA) and comparative molecular similarity indices analysis (CoMSIA). The in vitro JNK3 inhibitory activity exhibited a strong correlation with steric and electrostatic factors of the molecules. Using four different types of alignments, the best model was selected based on the statistical significance of CoMFA ($q_2\;=\;0.728,\;r_2\;=\;0.865$), CoMSIA ($q_2\;=\;0.706,\;r_2\;=\;0.960$) and Hologram QSAR (HQSAR: $q_2\;=\;0.838,\;r_2\;=\;0.935$). The graphical analysis of produced CoMFA and CoMSIA contour maps in the active site indicated that steric and electrostatic interactions with key residues are crucial for potency and selectivity of JNK3 inhibitors. The HQSAR analysis showed a similar qualitative conclusion. We believe these findings could be utilized for further development of more potent and selective JNK3 inhibitors.

• Toxicological Research
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• 제30권4호
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• pp.283-289
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• 2014

Tea flavonoids and polyphenols are well known for their extraordinary antioxidant activity which is considered important for anti-aging processes in animals. This study evaluated the anti-wrinkle effects of three different kinds of tea (Camellia sinensis) water extracts (CSWEs) including green, white, and black teas using a photoaged hairless mouse model. Data showed that the CSWE-treatment greatly improved skin conditions of mice suffering from UVB-induced photoaging, based on the parameters including the skin erythema index, moisture capacity, and transepidermal water loss. In addition, the wrinkle measurement and image analysis of skin replicas indicated that CSWEs remarkably inhibited wrinkle formation. In histological examination, the CSWE-treated mice exhibited diminished epidermal thickness and increased collagen and elastic fiber content, key signatures for skin restoration. Furthermore, the reduced expression of MMP-3, a collagen-degradative enzyme, was observed in the skin of CSWE-treated animals. Interestingly, comparative data between green, white, and black tea indicated that the anti-wrinkle activity of white tea and black tea is equally greater than that of green tea. Taken together, these data clearly demonstrated that CSWEs could be used as an effective anti-wrinkle agent in photoaged animal skin, implying their extended uses in therapeutics.

• 산업융합연구
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• 제13권1호
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• pp.41-47
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• 2015

The purpose of this study was to investigate how environment-friendly activities through nature affects attitude of children. 5-6 years old children were targeted for study from March to December, 2014. Rapid changes of modern society made increase of female workers and their participation rates in economic activity which results children to play more time with artificial toys and media. There are 3 stages to investigate effects. $1^{st}$ stage is to know about woods by visiting woods and experience environment-friendly activity. $2^{nd}$ stage is to experience woods with 5 senses not only in real woods but also in classroom. Lastly $3^{rd}$ stage is to make art work with natural object and make woods in classroom. Changes of hildren's attitude and view toward to the nature were recorded and analyzed by anecdotes perpetual inventory and environment-friendly attitude examination. By analysis of infant gives you the opportunity to encounter nature, often in conjunction with ongoing enjoys nature-friendly program in the classroom to play with toys, rather than a complete natural objects gradually formalized when presenting a natural, concentrated than the previous game this time is enhanced and creativity through nature through the promotion doeeojim and attitude to nature is also eco-friendly activities byeonhwadoem program showed that the impact on the attitude of the infant.