• 한국정보과학회논문지:소프트웨어및응용
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• 제34권4호
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• pp.342-358
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• 2007

유비쿼터스 컴퓨팅 시스템(Ubiquitous Computing System, UCS)은 언제 어디서나 장소에 구애를 받지 않고 사용자가 컴퓨터 네트워크를 이용하여 서비스를 얻을 수 있는 시스템이다. 유비쿼터스 컴퓨팅 시스템은 개인화된 시스템으로써, 다른 시스템과 상호운영이 되는 시스템이다. 이러한 유비쿼터스 컴퓨팅 시스템은 우리 생활에 생산과 소비, 정치, 경제, 사회, 문화, 전 분야에 걸쳐 많은 변화를 가져올 것이다. 따라서 본 논문에서는 이러한 유비쿼터스 컴퓨팅 시스템을 평가하기 위하여 ISO/IEC 9126을 기반으로 체계적인 품질모델을 제안한다. 그러므로, 유비쿼터스 컴퓨팅 시스템의 품질이 좋아야 사용자에게 제공하는 서비스가 좋기 때문이다. 또한 본 논문에서는 유비쿼터스 컴퓨팅 시스템의 중요한 특징들을 식별하고, 식별된 특정을 기반으로 하여 품질속성(Quality Attribute)을 도출한다. 이렇게 도출된 품질속성을 기반으로 하여 메트릭을 정의하고, 유비쿼터스 컴퓨팅 품질모델(Ubiquitous Computing Quality Model, UCQM)을 모델링 하여 유비쿼터스 컴퓨팅 시스템의 전반적인 환경과 중요한 특정을 평가한다.

• Environmental Engineering Research
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• 제19권1호
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• pp.75-81
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• 2014

Methanotrophic denitrification under a non-aerated condition (without external supply of oxygen or air) was investigated in a bioreactor coupled with a membrane diffuser. Batch experiment demonstrated that both methane consumption and nitrogen production rates were not high in the absence of oxygen, but most of the nitrate was reduced into $N_2$ with 88% recovery efficiency. The methane utilized for nitrate reduction was determined at 1.63 mmol $CH_4$/mmol $NO_3{^-}$-N, which was 2.6 times higher than the theoretical value. In spite of no oxygen supply, methanotrophic denitrification was well performed in the bioreactor, due to enhanced mass transfer of the methane by the membrane diffuser and utilization of oxygen remaining in the influent. The denitrification efficiency and specific denitrification rate were 47% and 1.69 mg $NO_3{^-}-N/g\;VSS{\cdot}hr$, respectively, which were slightly lower than for methanotrophic denitrification under an aerobic condition. The average concentration of total organic carbon in the effluent was as low as 2.45 mg/L, which indicates that it can be applicable as a post-denitrification method for the reclamation of secondary wastewater effluent. The dominant fatty acid methyl ester of mixed culture in the bioreactor was $C_{16:1{\omega}7c}$ and $C_{18:1{\omega}7c}$, which was predominantly found in type I and II methanotrophs, respectively. This study presents the potential of methanotrophic denitrification without externally excess oxygen supply as a post-denitrification option for various water treatment or reclamation.

• Journal of Nutrition and Health
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• 제39권8호
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• pp.748-755
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• 2006

The purpose of this study was to find out effects of treatment of ginsenoside Re, Rc and EGCG on mRNA expressions of leptin, hormone sensitive lipase (HSL) and resistin in 3T3-L1 adipocytes. The concentrations of EGCG were treated with $0.01{\times}10^{-7},\;0.1{\times}10^{-7},\;1{\times}10^{-7}\;and\;1{\times}10^{-6}\;or\;100{\mu}g/ml$ ginsenoside Re, Rc in culture cell for 13 days. mRNA expression of leptin wasn't expressed in preadipocyte but according to differentiation of adipocyte, the that of mRNA expression was decreased at gensenosids or EGCG treated cells compared with non treated adipocyte. Expression of HSL mRNA was increased in G-Re, G-Rc and EGCG treated cells compared with non treated cells. The resistin level was significantly decreased in adipocytes treated with G-Re, G-Rc and EGCG. These pattern was similar to leptin expression. These results support that treatment of gensenosides or EGCG in 3T3-L1 adipocyte resulted to affect of leptin and resistin as well as HSL mRNA levels, accordingly, levels of leptin and HSL will be acted by signalling body fat stores to the hypothalamus which in turn regulates food intake andenergy expenditure to maintain body weight homeostasis. And also regulation of resistin mRNA will prevent to diabetics attacked with obesity. In conclusion, we suggest that consumption of ginseng saponine or EGCG might prevent human diabetics or/and obesity.

• Nutrition Research and Practice
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• 제6권6호
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• pp.481-490
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• 2012

Phytochemicals are reported to provide various biological functions leading to the promotion of health as well as the reduced risk of chronic diseases. Fat-soluble plant pigments, carotenoids, are extensively studied micronutrient phytochemicals for their potential health benefits. It is noteworthy that specific carotenoids may be responsible for different protective effects against certain diseases. In addition, each carotenoid can be obtained from different types of plant foods. Considering the fact that the phytochemical content in foods can vary according to, but not limited to, the varieties and culture conditions, it is important to establish a database of phytochemicals in locally produced plant foods. Currently, information on individual carotenoid content in plant foods commonly consumed in Korea is lacking. As the first step to support the production and consumption of sustainable local plant foods, carotenoids and total phenolic contents of plant foods commonly consumed in Korea are presented and their potential biological functions are discussed in this review.

• 한국토양비료학회지
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• 제49권4호
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• pp.318-326
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• 2016

Two phosphate solubilizing bacteria, Pantoea rodasii PSB-11and Enterobacter aerogenes PSB-12, were isolated from button mushroom compost and employed to assess their synergistic effect in liquid medium and on growth of green gram plants by single and co-inoculation of the strains. Co-inoculation of two strains was found to release the highest content of soluble phosphorus ($521{\mu}g\;ml^{-1}$) into the medium, followed by single inoculation of Pantoea strain ($485{\mu}g\;ml^{-1}$) and Enterobacter strain ($470{\mu}g\;ml^{-1}$). However, there was no significant difference between single inoculation of bacterial strain and co-inoculation of two bacterial strains in terms of phosphorous release. The highest pH reduction, organic acid production and glucose consumption was observed in the E. aerogenes PSB-12 single inoculated culture medium rather than those of co-inoculation. According to the plant growth promotion bioassay, co-inoculated mung bean seedlings recorded 10.6% and 10.7% higher shoot and root growth respectively compared to the control. Therefore, in concluding, co-inoculation of the strains P. rodasii and E. aerogenes displayed better performance in stimulating plant growth than inoculation of each strain alone. However, being short assessment period of the present study, we recommend in engaging further works under field conditions in order to test the suitability of the strains to be used as bio-inoculants.

• 가정과삶의질연구
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• 제28권3호
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• pp.27-41
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• 2010

In this study, based on the current curriculum of consumer education in high school with the advent of Web 2.0 age, I analyzed both the curriculum used by new information tools related with Web 2.0 age and the one used by traditional tools to find out the degree of necessity of consumer education for the high school students in proportion to the level of their informational ability. First, compared with the education of food, clothes and shelter in the curriculum of manual training and domestic science, the necessity, importance, and availability were low and the students had a lower level of interest than they had with the three factors mentioned above. Second, after dividing the sector of consumer education in the curriculum into three fields such as reasonable purchase and use, solution and prevention of consumer problems and forming a new consumer trend, I looked into the necessity of the teaching method using conventional tools and the one using new informational tools following Web 2.0 age respectively. Traditional tools were favored for the education of consumption-related laws and policies, consumers' rights for the general cause of consumer problem solving and preventing. For the generation of the new comsumer trend, the new information tools were preferred in the appreciation of consuming culture and the issues of consuming environment. Third, it was revealed that students' level of informational ethics was the highest at 5.55 while their level of information creation and processing was the lowest at 3.96 from the research of six categories of their informational ability.

• 한국의상디자인학회지
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• 제10권1호
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• pp.1-9
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• 2008

The purpose of this research is to lay the foundation that middle aged woman takes care of more healthy, beautiful, attractive external features and prepares successful ageing on studying a difference of recognition between an actual somatotype and an ideal somatotype after we examine an actual somatotype and an ideal somatotype in the object of about $40{\sim}50$ middle-aged woman, dwells in Seoul, is the main group of a home consumption socially. The result of comparing a difference between an actual somatotype and an ideal somatotype was showing that in case of a facial form, the group which their faces are an egg-shaped prefers an egg-shaped and the group which their faces are a round-shaped prefers a round-shaped. In case of a silhouette, all groups prefers a normal type most. In case of a shoulder's type, all groups prefer a normal type most. In case of a shoulder-waist line, all groups prefers a Y line most. In case of a breast's form, all groups prefer a normal type most. In case of a back's form, all groups prefer a normal type most. In case of a buttocks' form, all groups prefers a normal type most. In case of a leg's form, all groups prefers a normal type most. On putting together research result as yet, middle aged women wish a similar somatotype irrespective of an age, an obesity measurement and this means a recognition of making an effort to be beautiful is alike. Therefore, it is necessary to recognize a somatotype of middle aged women uprightly and it must be accomplished a continuous, systematic consultation and education about a weight-control on exercising and not to mention of making a desirable eating habit.

• 가족자원경영과 정책
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• 제17권1호
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• pp.19-38
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• 2013

The objectives of this study were to examine how the consciousness of resource saving affects the resource-saving behaviors of urban employed wives and to induce their rational resource-saving behaviors by identifying related variables. This study also analyzed some correlations between the resource-saving consciousness and behaviors of urban employed wives to provide basic information for laying the foundations of a green growth culture. The subjects of this study were selected from among employed wives living in the urban areas of Seoul and Gyeonggi-do area. The study was conducted from June 11 to August 7, 2011. A total of 620 questionnaires were collected, and 592 of them were used in the analysis. Data was analyzed via the SPSS 18.0 program to calculate frequencies, mean and standard variation, Cronbach's ${\alpha}$, t-test, ANOVA, Pearson's correlation, hierarchical, and multiple regression analysis. A positive correlation was observed between the resource-saving consciousness and behaviors of urban employed wives. That is, their resource-saving behavior was higher their consciousness of resource saving was high. Furthermore, the most influential variables affecting the resource-saving behaviors of urban employed wives were: the subjects' job type, with specialist or office work; reference groups, such as family, relatives, and neighbors; and low levels of conspicuous consumption habits. Among the variables, the influence of reference groups had the highest explanatory power.

• 한국인터넷방송통신학회논문지
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• 제15권5호
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• pp.139-145
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• 2015

본 논문은 무선 센서 네트워크의 계층형 라우팅 프로토콜 중 대표적인 알고리즘인 LEACH(Low Energy Adaptive Clustering Hierarchy)의 원거리 전송 시의 에너지 효율이 급감하는 현상을 개선하기 위하여 DL-LEACH(Dual-hop Layered LEACH) 프로토콜을 제안한다. 이는, 데이터 전송에 듀얼 홉(dual hop : 싱글 홉 + 멀티 홉) 방식을 도입하여 근거리 전송에서는 부분적 싱글 홉 방식을, 원거리 전송에는 클러스터 헤드 간의 멀티 홉 전송 방식을 도입하였다. 제안된 DL-LEACH는 듀얼 홉 전송 방식을 사용하여 원거리 전송의 경우에는 클러스터 헤드의 에너지 소모를 줄이고, 근거리 전송의 경우에는 전송 루틴을 단순화하고 전송 거리를 줄여 센서 노드의 에너지 효율을 증가시켰다. 그러므로 일반적인 LEACH에 비교하여 넓은 센서 필드에 적합하다. 제안된 방법을 시뮬레이션을 통하여 검증하였다.

• 한국언론정보학보
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• 제39권
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• pp.473-505
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• 2007

광고는 변화하는 사회를 가장 빠르게 반영하는 매체 중 하나이며, 전 지구화와 소비문화가 일상 속으로 확산되는 것과 밀접한 관계를 갖고 있다. 이 논문은 현재 한국에서 다문화주의란 어떤 의미이며, 변화하는 사회의 모습이 광고에 어떻게 나타나고 있는지에 대한 고찰이다. 특히 최근 한국인 이외의 다양한 인종과 민족이 영상 광고에서 어떤 식으로 재현되었는지 살펴봄으로써, 다문화주의의 의미가 구성되는 방식을 살펴본다. 우선 한국의 다문화주의의 역사적 배경과 의미를 외국의 경우와 비교해서 살펴보고, 다문화주의와 인종주의 사이의 관계를 이론적으로 밝힌다. 이어서 정보/통신, 아파트, 금융 광고 등 전 지구화 시대에 다문화주의 전략을 가장 적극적으로 채택하고 있는 상품 광고를 중심으로 구체적 분석을 실시한다. 분석 결과 다문화적인 방식으로 재현된 광고들이 오히려 기존의 인종주의를 강화하거나 한국(인)이 중심이 된 민족주의의 정서를 강화하는 것으로 나타났다. 다문화적인 요소를 담아낸 광고가 양적으로 크게 증가했음에도 불구하고, 한국사회의 '다문화주의'는 여전히 전략적인 수준에 머물고 있는 것으로 보인다.