• 대한전기학회논문지:전력기술부문A
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• 제52권2호
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• pp.107-113
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• 2003

In a deregulated electric power market, a demand function to consider the characteristics of electric power consumers should be required. It is essential that the optimal power flow algorithm with object function of social welfare maximization using the demand function for a competitive electric power market is applied to resolve in a point of economic benefits as well as the security of power systems. Therefore, in this paper, we implement the optimization problem based on linear programming to consider the characteristics of electric power consumers using the demand function and analyze not only the nodal cost for generations and demands but also the variation of demands as a function of the characteristics of electric power consumers through numerical studies.

• 한국정보통신학회:학술대회논문집
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• 한국해양정보통신학회 2011년도 추계학술대회
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• pp.192-194
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• 2011

With the huge tendency of users toward online web sites, many issues regarding the user behavior interacting with these websites are yet still underestimated and not addressed in all aspects from software developers or business organizations. In this paper, we solely focus on the usability analysis of social network websites to enhance and improve the use of these social websites for more effective and motivational interaction. We use T-Model procedure as a mechanism of this research. Subjects with variation of expertise are contributed to the research of this paper. Minor quantitative analysis will be employed to test the hypothetical of this research in the further research. Result and its implications will be discussed profoundly at the end of this research.

• 한국인구학
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• 제11권2호
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• pp.3-10
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• 1988

This study is a replication of Clemente and Sturgis' study conducted among 600 American cities in 1972. The impact of population size, physical density, social density, and age of 56 Korean cities upon the extent of their industrial diversification was analyzed. Hypotheses concerning each independent variable were generated from the theory of the development of the division of labor proposed by Durkheim and subsequently adopted by human ecologists. Zero-order correlation analysis and regression analysis were employed to test the hypotheses. The standardized partial regression coefficients indicated that social density and age of cities exert significant positive impact upon industrial diversification. On the other hand, population size showed a significant negative impact upon industrial diversification. In addition, it was discovered that the combined influence of the independent variables account for 34.6 percent of the variation in industrial diversification. The findings of this study were compared with the results of Clemente and Sturgis' study. Some suggestions for future research are presented and discussed.

• 미국학
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• 제44권1호
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• pp.155-182
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• 2021

This study explores how American war films modify or reenact American exceptionalism depending on political and social situations in the United States. To this end, it analyzes the two war films, Saving Private Ryan and We Were Soldiers that were released before and after the 9/11 attacks as a critical juncture in the twenty first century, respectively. While the former conducts a partial modification on American exceptionalism in order to restore the national identity and moral authority of the United States lost ever since the Vietnam War, the latter demonstrates a complete reenactment of American exceptionalism in accordance with the foreign policy of the Bush administration and neoconservatism. It concludes with the illumination that the examination of American war films within the framework of American exceptionalism is efficacious in understanding from a broad perspective how American exceptionalism is utilized depending on political and social situations in the United States.

• 한국실내디자인학회논문집
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• 제15권6호
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• pp.111-119
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• 2006

The spatial property of contemporary library is now rapidly changing through the spatial expansion of knowledge and information, the reduction of information storing facility, the variation of approaching methods by digital shift and the transition of social recognition as a cultural facility. Also the spatial characteristics with referring characters have developed such as, decentralization, de-construction, de-boundary, individual space, erasing of boundary, flow of space which extends infinitely. The main process of library origination, the systematic classification, and the storage system concluding with the demand and value of the information by changing social demands and the role of the widest ranged facility. And 5 themes, such as, hierarchy, center, storage, boundary, and symbol, as a changed spatial concept and analyzed in the case of library plans and libraries which are actually built. The significant purpose of this research is to propose that rhizomatous intellectuality and hypertext could be a theoretical background of the contemporary architecture and could be a viewpoint of the transition of spatial structure in libraries. A future library should have spatial property embracing various social changes and needs and for this respect, it is necessary to approach and analyze through the architectural explication from diverging points of view.

• 대한건축학회논문집:계획계
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• 제35권12호
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• pp.75-82
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• 2019

After 1840 the first opium war, that changed the social nature and living habitats in China. The purpose of this study is to observe the influence of the war on the plan layout of traditional Chinese residential houses in Beijing Siheyuan. To find out the changes that were made after 1840, and reservation of the past, the space syntax model is used to analyze different social contexts and also compare the ancient and modern residential buildings. The result of the study indicate the following: Before the war, the ancient Siheyuan people's way of life strictly abide by the hierarchy system; External emphasis shows the host's status. However, in modern times, the social status became equal, efficient and harmonious relationship internally, while externally, it arranged the orientation and position of buildings to adapt to the natural environment. However, the boundaries between family members and visitors the emphasis on the courtyard and respect for private life remain unchanged.

• 복식문화연구
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• 제12권6호
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• pp.971-983
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• 2004

The purpose of this study was to investigate the effect of perceiver's social value, hair style, and hair color of object person on image perceptions. For social value variable, materialism and traditionalism were investigated. Subjects were 343 women in Seoul. Perceiver's materialism gave a significant influence on perception of elegance. The less materialistic group evaluated the hair style of object person more elegant than the more materialistic group. The more traditional group evaluated bright brown hairs less pretty than the less traditional group. This means that traditional people have less preferable image on bright brown hairs compared to the black and dark brown hair as it is different from Korean traditional hair color. Medium straight hair styles were evaluated lowest in preference and individuality. Short straight hairs were evaluated as the most elegant style and medium permanent hairs as the least elegant one. Long wavy hairs were evaluated highest in femininity, and straight hairs were evaluated lower in prettiness and activity than wavy hairs. The bright brown hairs were evaluated as the most individual color, and black was the least one. The bright brown was perceived lowest in elegance. Black and dark brown of the short straight hair style were perceived much more elegant than the bright brown of the same style, and black long wavy hairs were evaluated highest in femininity. The present findings provide that social value, hair style, and hair color are significant characteristics when perceiving women's image.

• 한국ITS학회 논문지
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• 제7권5호
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• pp.159-169
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• 2008

본 연구는 외부비용의 한 항목인 유지비용을 내부화하여 이에 따른 사회적 후생의 변화에 대한 연구이다. 연구대상으로는 민자 고속도로, 고속국도, 그리고 일반국도 등, 도로여건과 통행요금이 다른 3가지 노선이 경쟁하고 있는 천안$\sim$논산간 노선을 선정하였다. 유료도로의 수요함수는 회귀분석을 통해 도출하였다. 최선 가격설정법의 현실적용 어려움을 고려하여 유지비용을 통행요금에 재반영하는 방법으로 차선 가격설정법을 적용하였다. 유지비용을 통행요금에 반영함으로써, 노선별 통행량 변화에 따른 사회적 후생뿐만 아니라, 통행수입금의 변화 측면도 함께 연구하였다. 분석결과, 차선 가격설정법을 적용함에 따라 사회적 후생의 변화는 작은 차이를 보였으나, 재정적인 측면에서는 고속국도에 유지비용을 반영하였을 경우 연간 약 130억 원의 재정적인 효과가 있어 국가 재정 지원 감소에 기여할 것으로 분석되었다.

• 보건행정학회지
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• 제25권4호
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• pp.323-332
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• 2015

Background: Antibiotic resistance has been becoming serious challenge to human beings. Overuse of antibiotics, especially, for infants is concerned, but studies are very few for the prescribing pattern of antibiotic use for infants. This study analyzes prescribing patterns of antibiotics in outpatients of preschool children with acute respiratory tract infections in South Korea. Methods: Data are used from 2011 Health Insurance Review & Assessment Services-pediatric patients sample. Inclusion criteria is outpatient children (0 to 5 years) with top five frequent diseases. Prescription rates are analyzed by types of disease, provider, specialty, region, and ages. Binary or multinomial logit models are used to analyze determinants of providers' prescription pattern. Results: The main findings are as follows. First, distributions of prescription rates are shown as L-shape or M-shape depending on the types of disease. Second, the prescription variation is so large among providers, where providers are polarized as a group with low prescription rates and the other group with high prescription rates, though the shapes are shown diversified across types of disease. Third, prescription rates appear to be lower in pediatrics and higher in ENT (ear-nose-throat). Fourth, broad spectrum antibiotics are widely used among children. Finally, the logit analysis shows similar results with descriptive statistics, but partly different results across types of disease. Conclusion: Antibiotics for respiratory tract infections of infants are used excessively with a large variation among providers, and especially broad spectrum antibiotics are used. The prescription guideline for antibiotics should be provided for each specific disease to reduce antibiotic resistance in the future.

• 감성과학
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• 제20권1호
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• pp.67-74
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• 2017

본 연구는 사회 감성(Social emotion)중 공감도 정량화 방법을 제안하고자 한다. 비접촉형 센싱 방법인 인체 미동 기술을 이용하였다. 참가자들은 공감한 그룹과 공감하지 않은 그룹으로 분류하였다. 웹캠(Web-cam)을 이용해 표정 Task를 수행하는 동안 영상의 상반신 데이터를 수집하였다. 수집 된 데이터는 각 주파수 성분 별로 0.5 Hz, 1 Hz, 3 Hz, 5 Hz, 15 Hz로 분류하여 추출하였다. 추출 된 데이터는 움직임의 평균과 변화량, 움직임의 동조현상을 비교하였다. 그 결과 공감한 그룹의 움직임 평균과 움직임의 변화정도가 낮게 나타났다. 공감하지 못한 그룹의 경우 평균 움직임과 변화정도가 큰 것으로 나타났으며 통계적으로 유의한 차이를 보였다. 또한 공감한 그룹의 두 피험자의 경우 표정 Task를 수행하는 동안 움직임에 동조 현상이 나타나는 것을 확인하였다. 이는 두 사람 간에 공감이 형성 되었을 때 자연스럽게 집중을 하게 되고 그에 따라 움직임에 정도가 차이가 나는 것으로 볼 수 있다. 본 연구는 비접촉 센싱 방법을 통해 공감도 측정 가능성을 확인하는데 의의가 있다.