• Journal of Electrical Engineering and Technology
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• 제13권2호
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• pp.591-598
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• 2018

Short term load forecasts complexly affected by socioeconomic factors and weather variables have non-linear characteristics. Thus far, researchers have improved load forecast technologies through diverse techniques such as artificial neural networks, fuzzy theories, and statistical methods in order to enhance the accuracy of load forecasts. Short term load forecast errors for special days are relatively much higher than that of weekdays. The errors are mainly caused by the irregularity of social activities and insufficient similar past data required for constructing load forecast models. In this study, the load characteristics of Lunar New Year's Day holidays well known for the highest error occurrence holiday period are analyzed to propose a load forecast technique for Lunar New Year's Day holidays. To solve the insufficient input data problem, the similarity of the load patterns of past Lunar New Year's Day holidays having similar patterns was judged by Euclid distance. Lunar New Year's Day holidays periods for 2011-2012 were forecasted by the proposed method which shows that the proposed algorithm yields better results than the comprehensive analysis method or the knowledge-based method.

• 한국응급구조학회지
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• 제12권1호
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• pp.69-80
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• 2008

During New year's day and Thanksgiving holiday, the 1339 Information Center in Gwangju and Jeonnam received an emergency medical situation and carried out the analysis as follows ; 1. The reason for the higher phone guidance(72%) of the hospital was based on the simple query for the pain control rather than emergency care. This was explained by the unfamiliar environment of the holiday movers. Pharmaceutical guidance(12.6%) in rural area was also given during the holidays. 2. The disease counselling(2.4%) and emergency treatment instruction(First Aid)(1.6%) decreased because of the small number of request for the diseases. This explained the decrease of the disease counselling. 3. The phone calls increased 8-13 times more than usual. Five-day holidays could have more emergency patients than three-day holidays. During New year's day and Thanksgiving day, the number of received phone calls was 6,444(25.7%) and this accounted for one fourth of the total number in 2007. 4. The number of the patients increased on New year's day and Thanksgiving day because most of the medical institutions and pharmacy were off duty. 5. The patients were centered in Internal medicine and pediatrics. This showed the food-borne diseases and air-borne infection such as common cold. 6. During Thanksgiving day, ophthalmologic patients having viral keratoconjunctivitis(Apollo eye disease) increased 8 folds than in New year's day. It was estimated from the continuous epidemic of Apollo eye disease. 7. There broke out the traffic accidents, food poisoning, infectious diseases, dermatological diseases due to seasonal and environmental changes during the holiday move.

• 대기
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• 제16권1호
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• pp.49-53
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• 2006

The present study has examined interdecadal variations of the diurnal temperature range (DTR, daily maximum temperature minus daily minimum temperature) during the New Year season in Seoul for the period 1954-2005. Here, the average DTR for the New Year holidays (three consecutive days; one day before the New Year, the New Year day, and one day after the New Year) minus the average DTR for 14 days, 7 days before and 7 days after the New Year holidays, is defined for representing the New Year effect. The DTR index does not show notable trend until the late 1970s but shows obvious positive values afterward. For example, the difference of the average DTR between two periods (1980-2005 minus 1954-1979) is $0.65^{\circ}C$, which is meaningful at the 95% confidence level. This result demonstrates that intense human activity even for the limited period may provide climate impact in local regions. Its plausible causes are discussed.

• 대한전기학회논문지:시스템및제어부문D
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• 제51권10호
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• pp.453-459
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• 2002

This paper proposes an improved algorithm of the daily peak load forecasting for Korean Thanksgiving Day and the Lunar New Year's day. So far, many studies on the short-term load forecasting have been made to improve the accuracy of the load forecasting. However, the large errors of the load forecasting occur i case of Korean Thanksgiving Day and the Lunar New Year's Day. In order to reduce the errors of the load forecasting, the fuzzy linear regression method is introduced and a good selection method of the past load pattern is presented. Test results show that the proposed algorithm improves the accuracy of the load forecasting.

• 동아시아식생활학회지
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• 제8권3호
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• pp.235-245
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• 1998

The purpose of this research was to determine the dishes most commonly served during various festive days. This research studied the habits of housewives in Seoul and In the Choongchung province who have children in high school. 1. Most of the housewives in Seoul graduated from high school. On the other hand. those in the Choongchung province graduated from elementary school in their education backgrounds. The monthly income ranged from 1,550,000 won to 1,190,000won to 1,190,000 won for the housewives of Seoul, and from 1,000,000 won to 1,490,000 for those of Choongchung. The nuclear family system was dominated in both areas and 63.8% of the housewives had a full-time job. 2. "Sulnal(The New Year's Day), Chusuk(Thanksgiving Day), Jungwol-daeborum(The 1st Full-Moon Day)" are among the festive days celebrated in 85% of the both areas, and "Yuwol-Yudu(6th, June), Chungyangjul(9th, September), Naphyang(8th, September)" were celebrated in 0.5%. 3. Traditional festive dishes with respect to the festive days were as follows. Tuckuk(rice cake soup) was a favorite food in Sulnal(The New Year's Day), Burum(Peanut,pine-nut, walnut, etc) in Jungwol-daeborum(The 1st Full-Moon Day), Samgyetang(chicken soup) in Dongji Songpyen(rice cake) in Chusuk(Thanksgiving day) and Patjuk(small red beans soup) in Dongji (22th, December). No significance was found in the number of dishes. 4. The Regional differences the festive days such as Sulnal(The New Year's Day), Ipchun(4th, February), Jungwol-daeborum(The 1st Full-Moon Day), Samwol-samjit(3th, March) Sawolchopail(Budda's birthday), Tano(5th, May), Yuwol-yudu(6th, March) Sawolchopail Budda's birthday), Tano(5th, May), Yuwol-yudu(6th, June), Chilwol-chilsok(7th, July), Suddal -gumum (The year's last day) were very significant 5. The festive days should continue. On the other hand, the menu(dishes) of the festive days should be simplified.hould be simplified.

• 한국식생활문화학회지
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• 제20권2호
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• pp.152-171
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• 2005

This study was to investigate the perception of Korean traditional festival/holiday foods among the housewives in their 20's, 30's, 40's, and 50's residing in Seoul. Out of 350 questionnaires, 282 respondents were results The results were summarized as fellows: The most familial traditional holiday was Seollal on the New Year's Day(100%), and the most favored foods for respective traditional holidays are as fellows: tteokguk, rice paste soup, (98.23%) for Seollal on the New Year's Day; ogokbap, cooked rice mixed with five cereals (98.23%) for Daeboreum on the New Moon's Day of January 15; neuttitteok, zelkova ricecake, (20.64%) for Chopail on Buddha's Birthday; charyunbyeong cake (20.21%) for Dano on May 5; gyesamttang, chicken broth with ginseng, (89.72%) for Sambok, the hottest period of summer; songpyeon, pine cake, (96.45%) for Chuseok on August Moon Festival; patjuk, redbean stew, (98.94%) for Dongji on the winter solstice; and mandu, bun, (16.37%) for Seotdalgeumeum on the year-end day. Most of the respondents said that they ate traditional festival foods in compliance with the traditional manners and customs and that they made such traditional foods at home. They added that they wanted to team more about various recipes of the traditional foods and pointed out that traditional holiday foods had to be modernized in some way.

• 전기학회논문지
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• 제61권12호
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• pp.1765-1773
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• 2012

The accuracy of load forecast is very important from the viewpoint of economical power system operation. In general, the weekdays' load demand pattern has the continuous time series characteristics. Therefore, the conventional methods expose stable performance for weekdays. In case of special days or weekends, the load demand pattern has the discontinuous time series characteristics, so forecasting error is relatively high. Especially, weekdays near the thanksgiving day and lunar new year's day have the mixed load profile characteristics of both weekdays and weekends. Therefore, it is difficult to forecast these days by using the existing algorithms. In this study, a new load forecasting method is proposed in order to enhance the accuracy of the forecast result considering the characteristics of weekdays and weekends. The proposed method was tested with these days during last decades, which shows that the suggested method considerably improves the accuracy of the load forecast results.

• 건축사
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• 통권598호
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• pp.130-133
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• 2019

• 한국식생활문화학회지
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• 제13권5호
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• pp.393-403
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• 1998

This study was conducted to investigate the contemporary dietary life of residence in Kyunggi province. People living in Kimpo, Yoju districts(farm villages), Kapyung districts (mountain villages) and Hwasung districts (fishing villages) were selected for this research as subjects from August S to 19,1997. The results of the survey are summarized as follows: 1. Cooked rice was a staple food. However nuddles and soojaebees(soup with dough flakes) was taken as lunch or snacks but Juk(rice guel) or Dduk(rice cake) was not treated as a meal. 2. Dishes were consisted with soup or chigae, kimchi and namul(seasoned vegetables), and fishes, meats, salted sea foods, dried fishes, jangacchi(dried seasoning radish) were also taken by sometimes. 3. Soy sauce, bean paste, red pepper bean paste were made by every home even if they were very busy. 4. Festival days such as New Year's Day, daeborum(the 15th day of January), chusok(mid-autumn festival), and kosaa(October ceremony) and dongee(one of 24 seasons by lunar calendar) are skipped oftenly and slowly forgotten by people. They do not celebrate Samgin-nal(the third day of March), Buddha's birthday(the 8th day of April by lunar calendar), danoh(the 5th day of May), yoodoo(the 15th day of June), chilsok(the 7th day of July), Jungyang(the 9th day of September) and the last day of the year either 5. Due to improved kitchen system, we couldn't see the old kitchen devices.

• 동아시아식생활학회지
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• 제11권6호
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• pp.417-429
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• 2001

The purpose of this study is to investigate university students' eating habits during special occasions and the willingness to pass on traditions of cooking certain dishes on special occasions to the next generation. The procedure of this study included a questionnaire to collect data for this study. The results are summarized as fellows: there were 689 participants. 314 male and 375 female. Most participants were nuclear families(84.5%), Practicing cooking traditions during the special occasions at home on New year's day. Chusuk, Ceremony of a forefather's death, the 15th of the first month. and Winter solstice exceeded 70% of households. In every event, most persons who make the food during the special events at home are mothers. Furthermore, most persons who teach the cooking method are mothers. too. Most foods which were taken In the annual events generally were as fellows : rice cake soup on New Year's Day. boiled rice admixed with four other staple cereals on the 15th of the first month, half-moon-shaped rice cake on Chusuk. a rice-and-mugwort cake on Buddha's birthday, rice and adzuki-bean on the winter solstice and cake on Christmas and wedding anniversary. The results of the survey of perception of food traditions during the special events was as follows ; ‘annual events helped peoples to make relationships with family and relatives deeper’ showed the highest agreement. The willingness to pass on traditional foods for the special days showed the highest agreement on New Year's Day and Chusuk, followed by Ceremony of a forefather's death. the 15th of the first month, and finally the winter solstice.