• International Journal of Fuzzy Logic and Intelligent Systems
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• 제13권1호
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• pp.39-49
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• 2013

This paper presents a method of improving the performance of a day-ahead 24-h load curve and peak load forecasting. The next-day load curve is forecasted using radial basis function (RBF) neural network models built using the best design parameters. To improve the forecasting accuracy, the load curve forecasted using the RBF network models is corrected by the weighted sum of both the error of the current prediction and the change in the errors between the current and the previous prediction. The optimal weights (called "gains" in the error correction) are identified by differential evolution. The peak load forecasted by the RBF network models is also corrected by combining the load curve outputs of the RBF models by linear addition with 24 coefficients. The optimal coefficients for reducing both the forecasting mean absolute percent error (MAPE) and the sum of errors are also identified using differential evolution. The proposed models are trained and tested using four years of hourly load data obtained from the Korea Power Exchange. Simulation results reveal satisfactory forecasts: 1.230% MAPE for daily peak load and 1.128% MAPE for daily load curve.

• 한국게임학회 논문지
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• 제13권1호
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• pp.41-48
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• 2013

일반적으로 생태계에서 포식자-희생자 모델은 생존 경쟁의 연구모델로서 많이 연구되어 왔다. 기존의 논문이 포식자-희생자의 개체 수 변화량에 초점을 맞추고 있는 반면, 본 논문은 포식자-희생자 모델에서 포식자가 희생자를 추격하기에 필요한 에너지 제어에 관한 연구를 하였다. 문제를 간단히 하기 위하여 한 마리의 포식자와 한 마리의 희생자가 있다고 가정하였고, 이를 기반으로 일정한 거리에 있는 포식자가 희생자를 추격하여 성공하기에 필요 에너지를 물리적 이론을 근거로 제시하였고, 시뮬레이션에 기반하여 소비 에너지 모델을 제안하였다. 실험을 통하여 제안된 두 에너지 모델이 자연스러운 추격하기에 올바르게 적용될 수 있음을 보였다.

• 한국정보통신학회논문지
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• 제12권5호
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• pp.801-808
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• 2008

본 논문에서는 홈 네트워크 설비 가 인증제도와 u-city를 기반으로 사업자별, 지역별로 점차 확대 설치되고 있음에 따라 그 설치 현황과 추진상황을 알아보고 홈 네트워크의 일반적 개념과 법제도적 개념을 정리하였다. 또한 건축법과, 주택법, 주택건설기준 등에 관한 규정 등 법 제도와 정보통신 기술기준의 적용 근거를 분석하고, 시행제도상의 문제점을 도출시켜 법제도 개정의 필요성 및 개선안을 제시함으로써, 이용자 편의의 안전성과 편리성, 쾌적성을 갖춘 홈 네트워크 구축방안을 제시하였다.

• 대한원격탐사학회지
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• 제36권3호
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• pp.475-486
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• 2020

기후변화 시나리오는 기후변화 대응 연구의 기반이 되는 사항으로, 대용량 시공간 데이터로 구성되어 있다. 데이터의 관점에서는 1종의 시나리오가 약 83 기가바이트(Giga bytes) 이상의 대용량이며, 데이터 형식은 반정형으로 검색, 추출, 저장 및 분석 등 활용상 제약이 있다. 본 연구에서는 대용량, 다중시기 기후변화 시나리오의 활용을 편리하게 개선하기 위하여 공간정보 기반의 극단적 기후사상 분석 도구를 개발하였다. 또한, 개발된 도구를 RCP8.5 기후변화 시나리오에 적용하여 과거 발생한 집중호우 임계치가 미래 발생 가능한 시기와 공간에 대한 시범 분석을 수행하였다. 분석결과, 3일 누적 강우량 587.6 mm 이상인 날이 2080년대 약 76회 발생하는 것으로 분석되었으며, 집중호우는 국지적으로 발생하였다. 개발된 분석도구는 초기 설정부터 분석결과를 도출하는 전 과정이 단일 플랫폼에서 구현되도록 하였다. 더불어 상용 소프트웨어가 없어도 분석결과를 다양한 형식(웹 문서형식(HTML), 이미지(PNG), 기후변화 시나리오(ESR), 통계(XLS))으로 구현되도록 하였다. 따라서 본 분석도구 활용을 통해 기후변화에 대한 미래 전망이나 취약성 평가 등의 활용에 도움이 될 것으로 사료되며, 향후 제공될 기후변화 보고서에 따른 기후변화 시나리오 분석 도구 개발에도 사용될 것으로 기대된다.

• 한국보건간호학회지
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• 제19권2호
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• pp.217-228
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• 2005

Purpose: The purpose of this study is to understand nursing students' experiences during clinical practice at a public health center. Method: This research used narrative inquiry far data collection. From April 2005 to June 2006, data collection was conducted by open-ended interview, questionnaire and close observation. The participants, who were student nurses, were willing to take part in this study. Results: On the basis of these data, the experiences of clinical practice at public health center were: 1) when the student nurses begin clinical practice at public health centers for the first time, most of the students feel fearful, nervous and stressed. They also mentioned having a hard time being polite to clients and the staff. 2) The students had new experiences at the health public center compared with clinical practice. Especially, the student nurses who were determined to be good nurses were doing home visiting care service. Not only did they have the opportunity to confirm their identity as nurses, but also the students change their career course from clinical nursing to public health nursing. 4) They reflected on themselves after home visiting care service. Conclusion: On the basis of these findings, the following recommendations are made. 1) Data collection and analysis are needed, net only through the narrative method, but also through other various qualitative methods. 2) Comparative study is necessary to enhance clinical experiences through the analysis of the interfering factors and the original experiences.

• 패션비즈니스
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• 제14권4호
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• pp.41-57
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• 2010

DongDaeMoon fashion retail market, or so-called the new western market, has been playing an important role in DongDaeMoon area's success from 1997 to early 2000's. However, the unique and successful fashion merchandising system of DongDeaMoon retail market has been seriously threatened by consumer need changes as well as by an increased competition from new types of retail stores such as discount stores and online shopping malls. Moreover, its performance has been deteriorated due to the increased number of undifferentiated, small and medium-sized retail stores within the area. In this paper, attempts are made in building revitalization strategies for DongDeaMoon fashion retail market on the basis of analyzing fast fashion and consumers. As results, we found that DongDaeMoon fashion retail market needs cooperated area management plan from related market members. This will help DongDaemoon's image change from deal-oriented market to relationship-oriented market with consumers. Through Focus Group interview, we found DongDeaMoon fashion retail market is confronted with insufficient shopping infrastructure and new challenge from global fast fashion brand. Moreover, to overcome this situation, consumers require repaired communication activities by DongDeaMoon fashion market members on consumer relationship management basis. At the end, this paper try to provide strategic implications for DongDeaMoon fashion retailers.

• 부모자녀건강학회지
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• 제4권1호
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• pp.68-81
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• 2001

This research is to study about the weight-change of a pregnant woman, conditions of the woman and an infant. The weight-change of a mother during pregnancy was observed and that was expressed as the basis on the body mass index of a mother before pregnancy. The effects of weight-changes on both the discomfort, complications of pregnant mother and the condition of an infant were also investigated. Thus we set a purpose that this study would help pregnant woman and an infant to maintain and enhance their health conditions by proper weight control through nursing mediation. This study was performed in a certain hospital of university in seoul from Feb. 1. 2000 to Mar. 31. 2000. We explained the purpose of this study to the hospital institution and obtained consent of investigation. 152 inpatients who were in condition from PA 37 weeks to PA 42 weeks were the subject of this study. The research materials were made through of question paper that inpatients make answer by themselves and investigation paper. The question paper was about general background, weight and height before pregnancy and discomfort of the physical degree. And the investigation paper was about parity, maternal weight(late pregnancy), high pregnancy, delivery method, hemoglobin level, Apgar score, fetal weight. Physical discomfort was measured using the implement made by Kim hae won(1996) (chronbach's ${\alpha}=0.85$). SPSS was used to do statistics for managing and analyzing data. The results of this study were like followings. 1. The mean value of gained weight during pregnancy was about 13.8kg within from 3 kg to 26 kg. Among 152 research candidates, the gained weight of 80(52.6%) candidates remained within an ideal range. But that of 37 candidates(24.3%) became less than the ideal range. Also that of 35 candidates(23.0%) became over than the ideal range. 2. In the investigation of the relation between the weight change of a pregnant woman and her condition, the scores to represent physical discomfort were middle in all candidates. And the physical discomfort of over weight-gained group was more than that of low weight-gained group, but there was no difference in statistics(F=0.234, p=0.791). The weight-changes of pregnant woman didn't have an influence with the high risk of pregnancy(F=0.509, p=0.477). Also, the weight-changes didn't have an influence on delivery method($x^2=3.825$, p=0.148). However, in the investigation of the relation between weight-change and hemoglobin level, the change of hemoglobin level was highest in over weight gained group(F=3.062, p=0.05). 3. In the investigation of the weight-change of pregnant woman and the condition of infant. the weight changes didn't have an influence on both 1 min Apgar score(F=0.157, p=0.855) and 5 min Apgar score(F=0.030, p=0.970) of infant. Also, in the investigation of weight-change of a pregnant woman and weight difference of a infant with Pearson Correlation Coefficient, the weight-change of a pregnant woman affected vastly the weight of a infant. It was also found that the more pregnant woman gained in weight, the more did gain weighty infants. This relation was in net proportion(r=0.256, p=0.001). In conclusion, these results suggest that the weight-changes during pregnancy in Korea women of these days are more increased than that of the past days and individual variation in weight-changes is very high. Also, these results suggest that the changed hemoglobin level of a mother and weight of an infant were meaningfully affected by the weight-changes of a pregnant woman during pregnancy. However, the physical discomfort of a pregnant woman, the high risks of pregnancy, the delivery method and Apgar score of an infant were not affected by the weight-changes during pregnancy. Because the recommendation suggesting the ideal weight-change, used this study, is basis on the subject of American women, therefore, these results also suggest the necessity of such recommendation which is subject to Korean women.

• 한국식생활문화학회지
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• 제3권3호
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• pp.245-258
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• 1988

A food life style itself is substrative relations with culture, and is concerned with our daily life. Especially a food taboo comes from the intelligence which resulted from an ancestor's life experience. Accordingly, we can say a food taboo began with human appearance, settled in convention of folklore society, and forms it's own boundary todays. Since a practice of a food taboo is combinded firmly with various sociological factors such as religion, custom, and so on, it is very hard to change, even though the belife of a food taboo is not true. According to the result, first, significant factors effecting on a practice of a food taboo was a level of age, a level of education, religion, family pattern, behavior of subject and her mother for food life management, education of subject and her mother, and religion of subject and her mother. Second, in analysis of factors according to classification of food taboo a practice of a food taboo which classified to food of animal, food of plant and the other food showed significant differences, comparing religion of subject with her mother. Third, a result examined practice frequency and review of science, non science indicated that foods such as Egg of Globefish, Lettuce, Coffee, Persimmon, dried Persimmon, Soybean and Sugar are tabooed on the basis of science, and foods such as Vinegary food, Thieved food, Soup of Tangle and Dogmeat tabooed on the basis of non science. But in the case of Puja, it's basis of science is not identified. These food taboos are tabooed by more then 50% of subjects including who answerd 'there is some case to practice it' Therefore, we should continue analysis of science for the reason of a food taboo, at the same time, provide the origin and try to have a rational food life.

• 대한가정학회지
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• 제28권3호
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• pp.67-85
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• 1990

The purpose of this study was (1) to investigate changes in house and kitchen forms and behaviors in the kitchen area of Korean family houses from the Yi-dynasty to the present, and (2) to develop a housing conceptual framework on the basis of the ecosystem approach through analysis of changes in Korean family houses. The documentary research method wad used fro this study. The major findings were that the traditional Korean houses were composed of separate buildings and had various floor levels with the maru(a wooden floor) as the center of the open plan. The introduction of foreign style house forms from the era of enlightenment, in the year 1876 to the Korean war in 1950 changed traditional Korean houses into Korean-western style houses. More recent increased population and urbanization accelerated to change from the traditional Korean house form to an apartment style. At the present time, however, many kinds of house forms, from a highly modernized style with convenient facilities to a primitive style, which cannot even meet the basis needs of daily life, coexist together. The Kitchens in traditional Korean houses had no plumbing, drainage, or work centers. They had simple adobe furnaces which were used for cooking and for heating the ondol, a kind of panel heated floor by which the heat and smoke run under the floor to the chimney. This made the kitchen floor level lower than the floors of other spaces. The residents entered the kitchen through the madang(atrium). The influence of the western style kitchen, the development of technology, and improvements of nation-wide economic status have made today's kitchen space covenient and hygienic. The floor level of the kitchen was raised to the same level of other spaces. Formerly the major function of the kitchen was raised to the same level of other spaces. Formerly the major function of the kitchen space was cooking and heating floors. This had changed, and the kitchen is now, the place for family and social interaction. A housing conceptual framework was developed on the basis of these findings.

• 대한한의학회지
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• 제36권4호
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• pp.129-144
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• 2015

Objectives: This study aimed to provide a basis for treatment of Hwa-byung, a mental disorder frequently found among Koreans, by analysing published case reports and case series. Methods: In June 2015, a literature search for case reports and case series describing interventions for Hwa-byung was conducted in 7 databases for research publications in Korea, using Korean and English terms. Results: Thirty-two papers, reporting 439 cases of Hwa-byung, met the inclusion criteria. Since the first case report on Hwa-byung in 1996, case reports were continuously published until 2012. A total of 22 interventions were described, of which herbal medicine (71.9%), acupuncture (65.6%), and moxibustion (34.4%) were the most frequently described interventions. Twenty-five papers reported patterns, for which liver qi depression (28%) was most frequently used. A total of 48 outcome measures were used in 32 papers, of which Beck Depression Index (46.9%) and Symptom change (43.8%) were used in at least 10 papers. Conclusions: Since only 32 case reports/case series have been published on Hwa-byung in Korea, a strong basis for recommending standardized treatments is lacking. Therefore, a sufficient number of clinical studies, in particular randomized clinical trials (RCTs), are warranted to provide a clinical basis for treatment of Hwa-byung.