• 한국식품영양과학회지
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• 제27권6호
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• pp.1285-1296
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• 1998

This study was performed to investigate the food behaviors of college students through a food record method. In this study, one hundred and sixty seven students of Dankook university were chosen(male:77, female:90). We collected data about nutrients intake and food behaviors. Food behaviors included a frequency of both meal and snack, meal time, eating place, person with whom they ate, reason for eating, feeling after eating, and activities during mealtime. The results of the study were summarized as follows. Energy intake per day of male and female were 2201kcal and 1781kcal, respectively. Expect for the protein, vitamin C and phosphate, nutrients were not satisfied with the RDA, especially the intake of vitamin A, Vitamin B2, and calcium was very low. Average eating frequency per day was 5.1 and meal eating frequency per day was 2.6. In addition, male ate more frequently than female did. The interval between breakfast and lunch was 295 minutes, and between lunch and dinner was 373 minutes. The places where they ate the meal and snack were mostly school and restaurant at lunch and dinner, and there was not a significant different between weekday and weekend. On weekdays, the 40~50% of subjects had a breakfast with family, and most students had a lunch or dinner with friends. During weekend, although the percentage of students who had a lunch and dinner with family were increased, a lot of students had a lunch and dinner with friends or alone. In case of reason for meal and snack, the 60~70% of subjects answered that they ate the meal for hunger, and there was not different between weekday and weekend. 60~70% of subjects felt that they eat proper, but the percentage of overeat was increased for dinner. Most students were talking with others while they had a lunch. About 20% of subjects ate only food at both breakfast and dinner and 30% of subjects were watching TV. In correlation between nutrients intake and food behaviors, the higher frequency of eating, the higher carbohydrate intake in male. In case of female, protein intake and dinner time showed the negative correlation, and protein intake and mean intervals of eating had a positive correlation. In case of male, reason for eating affected the nutrient intake, but eating place, after feeling and activity for eating had no relation with nutrients intake. But in case of female, these factors affected nutrient intake. Therefore, food behaviors had an effect on nutrients intake, and the type of effect was different between male and female.

• 한국콘텐츠학회논문지
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• 제15권5호
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• pp.142-150
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• 2015

본 연구에서는 IPTV 및 디지털케이블의 SVOD 서비스 홀드백 변경 전후의 VOD 이용 행태를 분석하여, 방송 콘텐츠 유통 전략 변화가 소비자의 VOD 이용행태에 어떠한 변화가 일어났는가를 연구하였다. 연구결과, SVOD 홀드백이 1주에서 3주로 변경된 후, 이용건수는 50%까지 감소한 반면, 월정액 상품인 PPM의 증가로 유료 VOD 매출은 증가하였다. 시계열 분석결과, SVOD 이용건수, 가입자당 SVOD 이용건수, 가입자당 PPV 이용금액은 통계적으로 유의미하게 감소하였고, 가입자당 VOD 이용금액은 유의미하게 증가하였다. 또한, 드라마 장르별 SVOD 이용은 미니시리즈, 주말드라마, 주말특별드라마, 시트콤 등의 이용이 유의미하게 감소하였다. 본 연구로 방송사의 콘텐츠 유통 정책 변화가 이용자의 VOD 이용행태에 어떠한 변화가 일어났는지를 실증적으로 파악할 수 있었으며, 방송사 및 플랫폼 사업자에게 VOD 유통전략 수립 및 VOD 이용 활성화를 위한 방향을 제시할 수 있을 것으로 기대한다.

• Journal of Information Technology Applications and Management
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• 제17권3호
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• pp.151-162
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• 2010

Recent developments in financial market liberalization and information technology are accelerating the interdependence of national stock markets. This study explores the information spillover effect of the US stock market on the overnight and daytime returns of the Korean stock market. We develop a profitable intra-day trading strategy based on the information spillover effect. Our study provides several important conclusions. First, an information spillover effect still exists from the overnight US stock market to the current Korean stock market. Second, Korean investors overreact to both good and bad news overnight from the US. Therefore, there are significant price reversals in the KOSPI 200 index futures prices from market open to market close. Third, the overreaction effect is different between weekdays and weekends. Finally, the suggested intra-day trading system based on the documented overreaction hypothesis is profitable.

• 한국산학기술학회논문지
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• 제19권10호
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• pp.280-289
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• 2018

본 연구는 경기 수원, 이천, 여주, 광주 지역 소재 학령기 이후 자녀를 둔 어머니 119명을 대상으로 배우자의 가사노동개입이 여성의 우울증에 미치는 영향력을 밝히는 목적으로 구조화된 설문지에 의한 필드 조사 방법을 통해 10일 간의 실증조사를 하였다. 연구 결과 배우자의 가사노동개입이 여성의 우울증에 미치는 영향에 대한 검정결과 유의적인 영향을 미치는 것으로 나타났다. 그리고 배우자의 가사노동개입의 주중 주말과 자녀돌봄여부에 따라 우울증 유병률에 차이를 나타냈다. 이 같은 차이는 배우자의 가사노동개입에 따라 여성의 우울증에 미치는 영향에 주중 돌봄과 주말 돌봄에 따라 차이가 있고 이는 배우자의 가사노동개입에 따른 가사 부담 또한 경감될수록 우울증이 낮아지며, 예방에 도움이 됨을 의미한다. 이 같은 결과는 배우자의 가사노동개입이 단순 주중 주말의 자녀돌봄 수준과 개입의 정도에 따라 여성의 우울증에 미치는 영향력에 차이가 있음에 따라 가사와 자녀 돌봄 등 전체적인 가족관리까지 개입하여 분담할 때 효과가 보다 극대화될 수 있음을 시사한 것으로 평가할 수 있다.

• The Journal of Asian Finance, Economics and Business
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• 제3권3호
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• pp.17-26
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• 2016

This study investigates daily stock market anomalies in Chinese stock market, using nine most representative stock indices over an eleven year time period spanning from pre-financial crisis era to six years into the financial crisis. This research is the first to test the presence of the day of the week effect on stock returns in the Chinese stock exchanges during the financial crisis. We find that the day of week effects have been strongly significant in Chinese stock exchanges since 2004. However, unlike the previously found negative Monday effect and positive Friday effect in the U.S., Chinese stock market shows positive returns on Mondays and negative returns on Tuesdays. More importantly, the negative Tuesday effect is only significant after the inception of financial crisis. The results indicate a positive effect on Mondays and a negative effect on Thursdays. More importantly, we find a negative Tuesday effect during the financial crisis, which suggests a spillover of the Monday effect from the U.S. stock market. Our results shed some light on the degree of market efficiency in the largest emerging capital market in the world, and its increasingly close relationship with the U.S. capital market.

• 대한가정학회지
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• 제32권3호
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• pp.11-26
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• 1994

The purpose of this study is to investigate the change of time use in employed husbands and their wives according to family life cycle. Data for 284 couples were gathered from the structured questionnaire and time diary. The major findings of this study were as follows; (1) The family life cycle had effected on the time use of wives changed remarkable. That is to say the housework time of the unemployed wives decreased after increasing to the second stage but the social-cultural time of those changed to the contrary. (2) The family life cycle affected only the husbands' housework time on the weekend but wasn't the important effect of time use in case of the employed husbands.

• 한국임상보건과학회지
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• 제3권2호
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• pp.354-360
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• 2015

Purpose. The purpose of this study was conducted to identify college students' sleep type and awareness of sleep. Methods. We researched 250 students in a college using the Korean Translation of Composite Scale(KtCS) and awareness of sleep questionnaire. Results. The sleeping hour of college students was 395.28 minute in average. The research showed that the biggest reason for the lack of sleep is using the computer, mobile and watching TV(22.6%), and most of them said that the lack of sleep is causing drowsiness during the daytime( 29.2%). For the questions asking when they feel drowsy during the daytime, most of them forcing themselves to stay awake(29.2%) and they caught up on sleep on the weekend(32.5%). Conclusions. Therefore college students to keep relevant sleep time and to know about the importance of the sleep.

• Journal of the Korean Data and Information Science Society
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• 제14권4호
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• pp.805-815
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• 2003

This study examines two hypothesis regarding return generating process of corporate bonds: the trading day hypothesis and calendar day hypothesis. To differentiate two hypothesis ANOVA(analysis of variance) and regression analysis were used. If the statistical result can not reject calendar day hypothesis, it implies that there is weekend effect. The statistical result didn't support any particular hypothesis for the period of September 7th, 1999 through December 31, 2002. However, corporate bonds were supporting calendar day hypothesis for the period of October 9, 2000 through December 31, 2002. The result indicates that the Korean corporate bond market got through the impact of IMF.

• KIEAE Journal
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• 제4권3호
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• pp.95-101
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• 2004

As a part of acoustical design, it is often necessary to quantify aspects of an existing environment and to predict the result of adding an acoustical treatment. The most common sources of exterior noise, also termed as environmental noise,(or community noise) are traffic noise, air craft noise, industrial noise, etc. Transportation(air, road, and rail)noise is the dominant and most common source of noise exposure in residential neighborhoods, and the annoyance is its most consequential effect. The road traffic noise becomes aggravated due to the rapid increase of vehicles. It has a great effect on the dwelling environment. Therefore we investigate the characteristics and sources of the road traffic noise through grasping the status of the road traffic noise. In the present study, preceding studies investigated the noise level of urban areas in Seoul were reviewed and the noise level of urban areas in Seoul was measured at first, fifth, tenth, and nineteenth floor for two days of weekdays and two days of weekend.

• 천문학논총
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• 제38권3호
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• pp.111-123
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• 2023

In this study, quantitative analysis is attempted on data collected from Chilgapsan Observatory Star Park in Cheongyang-gun, Chungcheongnam-do. The aim of this experimental study in which quantitative analysis of the Astronomical Science Museum in Korea is conducted is to investigate its current situation and secure basic data. As of July 31, 2023, it has had 283,931 cumulative visitors in total. It had the largest number of visitors when it opened (2009 year), after which their number reduced steadily until the pandemic (COVID-19, 2020-2022). Recently, however, the number of visitors has increased. Generally, the number of visitors is highest in August (20.8%) and least in April (4.1%). The visit rate is higher on weekends (Saturday and Sunday) than on weekdays (Monday-Friday), and groups comprise only about 5.3% of the total number of visitors. Moreover, it can be confirmed that the number of visitors increases sharply during events. Finally, it was confirmed that the visit rate was unaffected by weather conditions. Considering these results, we propose the following strategies: 1) Establish a special program that reflects "the weekend effect." 2) Prepare a plan to attract group visitors during the weekdays using "the event effect." 3) Arrange alternative programs (e.g., experiential activities) that can be conducted indoors regardless of weather conditions. We think that our findings will help establish a roadmap for the direction the Astronomical Science Museum should take and aid in preparing a strategic foundation to preemptively respond to unexpected situations (e.g., pandemics).