• 한국멀티미디어학회논문지
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• 제20권1호
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• pp.58-65
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• 2017

The recent years, the cloud-based paradigm of cloud services are developed rapidly, it come with many a new problems. However, the collaboration between a individual with other users is still difficult. Cloud service is considered when users need to take advantage of security and the availability of cloud services. In this paper, we proposed an detection framework to detect an intrusion attack that threaten to cloud-based collaboration services and cloud security. Identify vulnerabilities and prepare for the safety of the collaboration services to create a variety of content in the cloud, it help to prevent the threats.

• 한국융합학회논문지
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• 제8권1호
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• pp.107-114
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• 2017

본 연구는 생리활성이 우수한 천년초의 활용도를 높이기 위해 L. plantarum를 이용한 발효과정을 통해 얻은 추출물을 천년초의 열수추출물과 비교하여 특성을 확인하였다. 점성분석, 총폴리페놀, 아미노산 분석을 수행하였으며, 항박테리아 활성 및 사이토카인 분석, zymography 등을 통해 발효추출물의 특성을 연구하였다. 천년초 이용도를 절감시키는 점성도가 거의 절반 감소되고, 비타민 C의 양은 약간 감소하였으나 발효과정 동안 거의 유지되는 것으로 보이며, 총폴리페놀, 아미노산 총량 및 생리활성 주요 무기질 성분은 발효를 통해 증가함을 확인하였다. 또한 세포독성이 없음을 확인하고, 염증관련 사이토카인류와 MMP-9 활성도를 확인한 결과 천년초의 열수추출물에 비해 L. plantarum-발효 천년초에서 염증 억제 및 조직 파괴 억제 효과가 있는 것으로 확인되었다. 이러한 결과들은 유산균을 이용한 발효 천년초를 기능성을 부가한 소재로 활용하는데 있어 기초가 될 것으로 기대된다.

• 한국전기전자재료학회논문지
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• 제29권6호
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• pp.337-341
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• 2016

In this study, $ Ni_{0.79}(Mn_{2.21-x}Cu_x)O_4$ (x=0~0.25) specimens were prepared by using a conventional mixed oxide method. All specimens were sintered in air at $1,200^{\circ}C$ for 12 h and cooled at a rate of $2^{\circ}C/min$ to $800^{\circ}C$, subsequently quenching to room temperature. We investigated the structural and electrical properties of $ Ni_{0.79}(Mn_{2.21-x}Cu_x)O_4$ specimens with variation of CuO amount for the application of NTC thermistors. As results of X-ray diffraction patterns, all specimens showed the formation of a complete solid solution with cubic spinel phase. The relationship between ln ${\rho}$ and the reciprocal of absolute temperature(1/T) for the NTC thermistors was shown linearity, which exhibited the typical NTC thermistor properties. With increasing the amount of CuO, resistivity at room temperature, B-value, and temperature coefficient resistance decreased.

• 한국융합학회논문지
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• 제12권1호
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• pp.317-326
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• 2021

본 연구는 근력저하 여성노인의 건강 관련 삶의 질의 영향 요인을 파악하기 위해 시도된 융복합 연구이다. 제7기 국민건강영양조사 원시자료를 활용하여 65세 이상 근력저하 여성노인 453명을 대상으로 하였고, 자료는 가중치를 적용한 복합표본분석방법으로 SPSS 26.0 프로그램을 이용하여 분석하였다. 연구 결과, 근력저하 여성노인의 건강 관련 삶의 질은 0.84점이었고, 건강 관련 삶의 질은 연령, 교육수준, 주관적 건강상태, 유산소 신체활동, 스트레스 인지정도, 관절염, 골다공증, 우울증에 따라 유의한 차이가 있었다. 근력저하 여성노인의 건강 관련 삶의 질에 대한 영향 요인은 연령(t=-2.68, p=.008), 교육수준(t=2.85, p=.005), 주관적 건강상태(t=7.24, p<.001), 스트레스 인지정도(t=-2.73, p=.007), 유산소 신체활동(t=2.62, p=.009), 관절염(t=-3.33, p<.001)이었고, 설명력은 33.5%이었다. 연구결과를 바탕으로 근력저하 여성노인의 건강 관련 삶의 질을 향상시키기 위하여 근력을 증진하고 관절염을 관리할 수 있는 신체활동을 포함한 중재 전략의 개발이 필요하다.

• 한국정보전자통신기술학회논문지
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• 제17권1호
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• pp.53-58
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• 2024

본 연구는 우리나라에 출원된 인공지능 기술이 포함된 전자상거래 관련 특허의 기술 융복합 분석에 관한 것으로 사회 연결망 분석(Social Network Analysis)을 이용하여 핵심 기술간 관계를 분석하고 시각화하였다. 사회 연결망 분석을 실시한 결과 인공지능 기술이 포함된 전자상거래 관련 특허에서 상호 기술 네트워크를 구성하는 핵심 IPC 코드는 G06Q, G06F, G06N, G16H, G10L, H04N, G06T, A61B 등으로 조사되었다. 특히 [G06Q-G06F], [G06Q-G06N] 등 데이터 처리 관련 기술 융복합과 [G06Q-G10L], [G06Q-H04N], [G06Q-G06T] 등 음성과 이미지 신호가 중요하게 융합되어 있음을 확인할 수 있다. 본 연구 방법을 활용하면 전자상거래 관련 특허의 미래 기술 트렌드를 확인하고 새로운 비즈니스 모델을 창안할 수 있다.

• 한국농공학회논문집
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• 제63권3호
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• pp.87-95
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• 2021

The Doam Lake Watershed is one of Gangwon-do's non-point source management areas. This area has a lot of snowfall in winter, and it is expected that there will be a lot of soil erosion in early spring due to snow melting. In this study, snow melting was monitored in the Doam Lake watershed from February to 3, 2020. It was conducted to analyze the water quality changes by calculating the concentration of non-point source pollution caused by snowmelt, and to compare the concentration of water quality during snowmelt event with rainfall and non-rainfall event. As a result of water quality analysis, Event Mean Concentration (EMC) at the first monitoring was SS 33.9 mg/L, TP 0.13 mg/L, TN 4.33 mg/L, BOD 1.35 mg/L, TOC 1.84 mg/L. At the second monitoring, EMC were SS 81.3 mg/L, TP 0.15 mg/L, TN 3.12 mg/L, BOD 1.32 mg/L, TOC 3.46 mg/L. In parameter except SS, it showed good water quality. It is necessary to establish management measures through continuous monitoring.

• 한국자원식물학회:학술대회논문집
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• 한국자원식물학회 2023년도 임시총회 및 춘계학술대회
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• pp.40-40
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• 2023

Atopic dermatitis is a chronic inflammatory skin diseases caused by skin barrier dysfunction. Allium victoralis var. Platyphyllum (AVP) is a perennial plant used as vegetable and herbal medicine. The purpose of this study was to suggest that AVP is a new cosmetic material by examining the effects of AVP on the skin barrier and inflammatory response. A bibliometric network analysis was performed through keyword co-occurrence analysis by extracting author keyword from 69 articles retrieved from SCOPUS. We noted the anti-inflammatory activity shown by the results of clustering and mapping from network visualization analysis using VOSviewer software tool. HPLC-UV analysis showed that AVP contains 0.12 ± 0.02 mg/g of chlorogenic acid and 0.10 ± 0.01 mg/g of gallic acid. AVP at 100 ㎍/mL was shown to increase the mRNA levels of filaggrin and involucrin related to skin barrier function by 1.50-fold and 1.43-fold, respectively. In the scratch assay, AVP at concentrations of 100 ㎍/mL and 200 ㎍/mL significantly increased the cell migration rate and narrowed the scratch area. In addition, AVP suppressed the increase of inflammation-related factors COX-2 and NO and decreased the release of β-hexosaminidase. This study suggests that AVP can be developed as a functional cosmetic material for atopy management through skin barrier protection effects, anti-inflammatory and anti-itch effects.

• ALGAE
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• 제31권4호
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• pp.391-401
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• 2016

To develop an easy and rapid method of quantifying lipid contents of marine dinoflagellates, we quantified lipid contents of common dinoflagellate species using a colorimetric method based on the sulpho-phospho-vanillin reaction. In this method, the optical density measured using a spectrophotometer was significantly positively correlated with the known lipid content of a standard oil (Canola oil). When using this method, the lipid content of each of the dinoflagellates Alexandrium minutum, Prorocentrum micans, P. minimum, and Lingulodinium polyedrum was also significantly positively correlated with the optical density and equivalent intensity of color. Thus, when comparing the color intensity or the optical density of a sample of a microalgal species with known color intensities or optical density, the lipid content of the target species could be rapidly quantified. Furthermore, the results of the sensitivity tests showed that only $1-3{\times}10^5cells$ of P. minimum and A. minutum, $10^4cells$ of P. micans, and $10^3cells$ of L. polyedrum (approximately 1-5 mL of dense cultures) were needed to determine the lipid content per cell. When the lipid content per cell of 9 dinoflagellates, a diatom, and a chlorophyte was analyzed using this method, the lipid content per cell of these microalgae, with the exception of the diatom, were significantly positively correlated with cell size, however, volume specific lipid content per cell was negatively correlated with cell size. Thus, this sulpho-phospho-vanillin method is an easy and rapid method of quantifying the lipid content of autotrophic, mixotrophic, and heterotrophic dinoflagellate species.

• 한국환경과학회지
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• 제23권1호
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• pp.61-68
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• 2014

This study attempted to utilize various groundcover plants in phytoremediation, using shade plants, which often have a high shade tolerance for shade urban space. Liriope platyphylla was grown in soil containing three of heavy metals, Zn, Cd, and Pb under four different concentrations (0, 100, 250 and 500 mg/kg) to determine the heavy metal accumulation characteristics and removing from soil. Total amounts of accumulated Zn in L. platyphylla were increased in accordance with increasing elevated Zn concentrations in soil, but the difference was not significant between Zn250 and Zn500. Cd accumulation, sharply increased in Cd100 and Cd250, but was reduced in Cd500. Increased Pb concentration in soil resulted a continuous increase in the total amounts of Pb accumulated in L. platyphylla. The total content of Zn in soil decreased by almost 50% in Zn100, almost 33% in Zn250 and 20% in Zn500 through growth of L. platyphylla over a period of 7 months. In the case of Cd, the concentration in soil, was decreased with 10% in Cd100, 10% in Cd250 and 33% in Cd500 through growth of L. platyphylla over a period of 7 months. This results indicate that more Cd was removed by planting L. platyphylla, compared to Zn or Pb.

• 대한한의학회지
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• 제39권1호
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• pp.63-74
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• 2018

Objectives: Periodontitis is an inflammatory disease with the destruction of periodontal ligament, alveolar bone loss and inflammation of gingva, leading to teeth loss. Eclipta prostrata L. (Ecliptae Herba) has been used to treat the inflammatory disease as a Korean traditional medicine. The aim of this study is to investigate the effects of E. prostrata L. on periodontitis. Methods: E. prostrata L. was extracted with water and lyophilized. The aqueous extract of E. prostrata L. (EP) was topically applied to the periodontal lesion for 2 weeks. To induce the periodontitis, a 3-0 nylon ligature was placed around the cervix of the lower first molar in rat. Rats were divided into 3 groups (n = 7); NL group (non-ligatured and non-treated), L group (ligatured and vehicle-treated) and EP group (ligatured and EP-treated). After sacrifice, the mandibles was dissected and stained with methylene blue solution to analyze the alveolar bone loss. The expression of MMP-9 was determined in gingival tissues. To confirm the effect of EP on recovery of gingiva, mRNA expressions of type I pro-collagen and MMP-9 levels were investigated in LPS-treated HS68 fibroblast cells. In addition, inflammatory mediators were evaluated in LPS-treated RAW264.7 cells. Results: Alveolar bone loss was significantly inhibited by EP treatment. The mRNA expression of MMP-9 was attenuated in rats treated with EP. In addition, treatment with EP increased the expression of type I pro-collagen, while the expression of MMP-9 was decreased in LPS-stimulated HS68 fibroblast cells. Furthermore, EP down-regulated the LPS-induced IL-6, $TNF-{\alpha}$, COX-2 and iNOS production in RAW264.7 cells. Conclusions: These results suggest that EP have ameliorative effects on periodontitis through inhibiting alveolar bone loss and modulating the inflammatory mediators. Therefore, E. prostrata L. may be an alternative on patients with periodontitis.