김병호 가야금산조의 발전과정 연구 : 전승자별 가락을 중심으로

김시연(Kim, Si Yeon) 국립국악원 2022 국악원논문집 Vol.45 No.-

김병호 가야금산조는 어린 나이에 제2세대인 명인들과 함께 수학하며 스승의 가락에 본인의 가락을 더한 약 35분 정도의 김창조계 가야금산조이다. 본 연구자는 김병호 가야금산조의 연주 가락이 전승자별로 달라 60년대 음원과 전승자 의 가락을 확인하며 분석하여 발전과정을 알아내었고 다음과 같다. 진양조는 65장단에서 72장단, 73장단으로 변화되었으며 67년 음원을 통하여 78장단을 연주되었음을 알 수 있었으며 그의 제자의 논문으로 79장단까지 확대된 가락임을 알 수 있었다. 중모리는 31장단과 33장단이 음원과 악복 일치하며 전승자가 선호하는 가락을 33장단으로 확대된 가락이 나타났다. 중중모리는 Ⅰ(18장단)과 Ⅱ(26장단)으로 전승되고 있었으며 전승자별로 선호하는 가락에 따라 연주되는 가락이 차이가 나타난다. 엇모리는 최근에 공개된 ‘로버트 가피아스’ 음원에서 29장단으로 연주되어 그 전 ‘2008년 이재숙의 여섯바탕전’ 가락과는 많은 차이가 있는 악장이다. 하지만 강문득 제자 선영숙의 29장단과 일치하여 숨은 가락임을 알 수 있다. 빠른 악장인 자진모리, 휘모리, 단모리는 전승자별로 가락 수가 상이한데 연주법인 쌍튀김, 말발굽의 수를 달리하여 가락의 차이로 발전시켰다. 이 결과 김병호 가야금산조의 전승자별 가락은 진양조, 중모리, 중중모리 악장에서 전승자별로 발전되어 차이가 나는 가락이 나타나고 있다. 김병호 가야금산조는 시대적 맥락과 더불어 특징적 가락의 연주법을 간직한 채 발전해 나가길 빈다. Kim Byeong-ho gayageum sanjo (improvisational music played by gayageum solo with drum accompaniment) is a 35-minute gayageum sanjo that belongs to jeonnamjje (southwestern regional style), affiliated to the Kim Chang-jo School . At the young age of the third generation, Kim Byeong-ho learned his teacher s music studying with the masters of the second generation and added his own melody to develop into Kim Byeong-ho School . After that, he has passed down the melody to his representative disciples like Yang Yeon-seop and Kang Mun-deuk. This study examines the development process of Kim Byeong-ho gayageum sanjo, comparing the melodies of the recording materials in the 1960s and those of the successors. This study deals with hidden melodies of Kim Byeong-ho gayageum sanjo , looking at the research materials on Kim Byeong-ho gayageum sanjo , and the scores received directly from Kim Byeong-ho, and the scores of his disciples, based on the sound source recorded by an overseas ethnomusicologist. There are 79 hidden melodies in jinyangjo , 28 in jungjungmori , and 29 in eotmori. Kim Byeong-ho sanjo used to be 27 minute long without having many melodies added to his teacher’s melodies; and the current playing time is about 35 minutes. It is said that the transfer process of Kim Byeong-ho according to the literature was 10 years; he made his disciples practice for 7 hours a day and evaluated them whether their practice was good or not. I hope that this study would contribute to the following study of the whole melodies by each successor to find hidden melodies, and further sanjo will continue to develop by adding the historical context and the creative melodies of the predecessors with the characteristics of the Kim Byeong-ho sanjo even as the times evolve.

조리 방법에 따른 자색 당근의 품질 특성 및 항산화능의 변화 - 조리 방법에 따른 항산화 잔존량 -

김시연,오현빈,이휘림,김영순,Kim, Si Yeon,O, Hyeonbin,Lee, Phyrim,Kim, Young Soon 한국식품영양학회 2019 韓國食品營養學會誌 Vol.32 No.2

In this paper, quality properties and antioxidant capacity of cooked black carrot has been studied. Five different cooking methods have been applied: microwave (45 sec), boiling ($100^{\circ}C$, 14 min), steaming ($100^{\circ}C$, 20 min), sous vide ($75^{\circ}C$, 80 min), sous-vide ($95^{\circ}C$, 30 min). The color value was slightly different (p<0.05), the boiling method was the highest in L-value and Sous vide $75^{\circ}C$ method was the lowest. The steaming method indicated the highest a-value at 5.50. The b-value was significantly different between the samples (p<0.05). The microwave method was the highest at 3.49 while the sous vide $95^{\circ}C$ method was the lowest at -0.34. No significant difference was observed between the samples when only the moisture content results were considered. The highest pH was observed in samples cooked using the boiling method. The softening (%) was higher when the cooking water was in contact with samples and it was dependent on the temperatures. In addition, this study shows that not only temperature but also cooking time and cooking media are very crucial in the preparation and cooking of black carrot to prevent the loss of the antioxidant compound. In conclusion, the comparison of the quality characteristics and antioxidant properties of black carrots indicated that the most appropriate cooking method is sous-vide method.

잠재 부하 정보와 HTTP 연결의 에이징을 통한 HTTP 연결 스케줄링 알고리즘

김시연,김성천,Kim Si-Yeon,Kim Sungchun 한국정보과학회 2005 정보과학회논문지 : 시스템 및 이론 Vol.32 No.11

HTTP/l.0과 새로운 HTTP/1.1이 함께 사용됨으로써 단일 HTTP 연결이 단일 사용자 요청을 의미하던 환경에서 연구되었던 웹 서버 부하 분산 정책은 수정이 불가피하게 되었다. HTTP/l.0 환경에서는 사용자의 단일 요청만을 가지고 서버를 할당하였으나, 지속적인 HTTP 연결을 지원하게 되면서 하나의 HTTP 연결을 통해 여러 개의 요청을 서버에게 요구할 수 있으므로, 첫 번째로 도착한 요청 하나만으로는 앞으로 그 HTTP 연결을 통해 전송될 사용자의 요청이 서버의 자원을 얼마나 소비하게 될 것인지 전혀 예상할 수 없게 된다. 본 논문에서는 HTTP/1.1을 효율적으로 지원하는 부하 분산 정책을 제안하고자 한다. 이 정책은 사용자의 첫 번째 요청이 전달되면 그 요청의 내장 객체 정보와 현재 살아있는 HTTP 연결의 에이징(aging)을 고려하여 서버를 선택하는 알고리즘이다. 그리고 디스패처의 잘못된 분산 결정으로 인해 시스템의 성능에 누적되는 악영향을 최소화하기 위한 기법도 제시한다. With HTTP/1.0, a single request means a single HTTP connection so that the granular unit of dispatching is the same as real load. But with persistent HTTP connection, multiple requests may arrive on a single TCP connection. Therefore, a scheme that dispatches load at the granularity of individual requests constrains the feasible dispatching policies In this paper we propose a new connection dispatching polity for supporting HTTP/1.1 persistent connections in cluster-based Web servers. When the request of a base html file arrives, the dispatcher gets the subsequent load arriving on that connection using the embedded objects information. After the dispatcher stores the load information in Load Table, the dispatcher employs the connection aging strategy on live persistent connections on the passage of time. The results of simulation show about $1.7\%\~16.8\%$ improved average response time compared to existing WLC algorithm.

로스팅 조건에 따른 카카오 닙 첨가 쿠키의 품질 특성 및 항산화 활성의 최적화

김다솔(Da Sol Kim1),오현빈(Hyeonbin Oh),김시연(Si Yeon Kim),이휘림(Phyrim Lee),김영순(Young Soon Kim) 한국조리학회 2020 한국조리학회지 Vol.26 No.3

경제성을 고려한 전기자동차 충전시스템과 배터리 교체형 시스템의 비교분석 연구

김시연(Si-Yeon Kim),황재동(Jae-Dong Hwang),임종훈(Jong-Hun Lim),송경빈(Kyung-Bin Song) 대한전기학회 2012 전기학회논문지 Vol.61 No.9

Electric vehicle usage is currently very low, but it will be increase with development of electric vehicle technology and a good government policy. Moreover in 2020, advanced electric vehicle manufacturing system will give high performance for its price and mass production. Electric vehicle will become widespread in Korea. From an operational and a planned viewpoint, the electric power demand should be considered in relation to diffusion of electric vehicles. This paper presents the impact of the various battery charge systems. A comparison is performed for electric vehicle charging methods such as, normal charging, fast charging, and battery swapping. In addition, economic evaluation for the replaceable battery system and the quick battery charging system is performed through basic information about charging Infrastructure installation cost. The results of the evaluation show that replaceable battery system is more economical and reliable in side of electric power demand than quick battery charging system.

한강유역의 수문지수와 생태지수 상관성 분석

김시연(Kim, Si Yeon),전설(Jeon, Seol),박대룡(Park, Daeryong),정기철(Jung, Kichul),이문영(Lee, Moon Young),엄명진(Um, Myoung-Jin) 대한토목학회 2020 대한토목학회 학술대회 Vol.2020 No.10

체질량지수에 따른 일부 대학생의 체형인식도와 식행동에 관한 연구

김시연(Si Yeon Kim),이홍미(Hong Mie Lee),송경희(Kyung Hee Song) 대한지역사회영양학회 2007 대한지역사회영양학회지 Vol.12 No.1

This study was performed to investigate the body image perception by BMI and the dietary behaviors in 803 college students (408 males and 395 females). The degree of obesity was divided into an underweight group with BMI less than 18.5 kg/m2, a normal group with BMI of 18.5~22.9 kg/m2, an overweight group with BMI of 23~24.9 kg/m2 and an obese group with BMI over 25.0 kg/m2. The average ages of subjects were 22.9 years in males and 20.2 years in females. The average weight and height of male subjects were 175.3 cm and 69.6 kg, respectively and those of female subjects were 162.5 cm and 52.0 kg, respectively. The average BMIs of male and female subjects were 22.6 kg/m2 and 19.7 kg/m2, respectively. The distribution of subjects who perceived their current body image as ideal body image was 25.7% in males and 10.9% in females, showing that the body image satisfaction of male subjects was 1.5 times higher than that of female subjects. Body image perception for their own bodies was mostly shown as the average or standard shape both in males and females with 64.2% and 54.2%, respectively, but males showed a higher perception rate than females and 31.1% of females and 19.5% of males perceived their bodies as lean shape (p < 0.01). The body image satisfaction was 4.20 in males and 3.70 in females, showing more satisfaction in the male subjects (p < 0.001). The correlation between body image and physical variables in male subjects indicated that CBI and IBI showed statistically significant correlation and also BMI showed statistically significant correlation with IBI (p < 0.001) and CBI (p < 0.001). The frequency of eating out increased as the frequency of skipping meals increased (p<0.001) and the frequency of having snacks increased as the frequency of eating out increased (p < 0.01). The correlation between body image and physical variables in female subjects showed that CBI and IBI (p < 0.001) had statistically significant correlation. Body weight showed statistically significant correlation with CBI (p < 0.001), BMI (p < 0.001) and height (p < 0.001). The frequency of eating out increased as height (p < 0.01) and the frequency of skipping meals (p < 0.001) increased. When both male and female subjects wanted leaner body shapes, they preferred much leaner shapes despite their current body images belonging in the normal range. Additionally subjects preferred the body image in the normal range in cases when their current body images were lean. In particular, more female subjects had strong desires to become leaner in their body images than male subjects, which could be analyzed as a risk factor for physical harm. From the above results, it is considered that both male and female subjects need to establish proper recognition and dietary behaviors for their body images and also need nutritional education and counseling for desirable weight control methods. (Korean J Community Nutrition 12(1) : 3~12, 2007)

Vehicle-to-Grid를 이용한 계통운영보조서비스의 경제성 분석

김시연(Si-Yeon Kim),황재동(Jae-Dong Hwang),송경빈(Kyung-Bin Song) 대한전기학회 2012 대한전기학회 학술대회 논문집 Vol.2012 No.10

전력수요 변동률을 이용한 연휴에 대한 단기 전력수요예측

김시연(Si-Yeon Kim),임종훈(Jong-Hun Lim),박정도(Jeong-Do Park),송경빈(Kyung-Bin Song) 한국조명·전기설비학회 2013 조명·전기설비학회논문지 Vol.27 No.6

Fuzzy linear regression method has been used for short-term load forecasting of the special day in the previous researches. However, considerable load forecasting errors would be occurring if a special day is located on Saturday or Monday. In this paper, a new load forecasting method for the consecutive holidays is proposed with the consideration of the power demand variation rate. In the proposed method, a exponential smoothing model reflecting temperature is used to short-term load forecasting for Sunday during the consecutive holidays and then the loads of the special day during the consecutive holidays is calculated using the hourly power demand variation rate between the previous similar consecutive holidays. The proposed method is tested with 10 cases of the consecutive holidays from 2009 to 2012. Test results show that the average accuracy of the proposed method is improved about 2.96% by comparison with the fuzzy linear regression method.

계절 ARIMA 모형을 이용한 104주 주간 최대 전력수요예측

김시연(Si-Yeon Kim),정현우(Hyun-Woo Jung),박정도(Jeong-Do Park),백승묵(Seung-Mook Baek),김우선(Woo-Seon Kim),전경희(Kyung-Hee Chon),송경빈(Kyung-Bin Song) 한국조명·전기설비학회 2014 조명·전기설비학회논문지 Vol.28 No.1

Accurate midterm load forecasting is essential to preventive maintenance programs and reliable demand supply programs. This paper describes a midterm load forecasting method using autoregressive integrated moving average (ARIMA) model which has been widely used in time series forecasting due to its accuracy and predictability. The various ARIMA models are examined in order to find the optimal model having minimum error of the midterm load forecasting. The proposed method is applied to forecast 104-week load pattern using the historical data in Korea. The effectiveness of the proposed method is evaluated by forecasting 104-week load from 2011 to 2012 by using historical data from 2002 to 2010.