Minimally invasive facial rejuvenation combining thread lifting with liposuction: A clinical comparison with thread lifting alone

배광일,한동길,김성은,Young Bae Lee 대한미용성형외과학회 2019 Archives of Aesthetic Plastic Surgery Vol.25 No.2

Background Barbed thread lifting is known to be a minimally invasive procedure compared with standard incisional surgery for facial rejuvenation. However, some studies have pointed out that the effects of thread lifting do not last long and disappear after several months. Therefore, the aim of this study was to evaluate the efficiency and duration of anchoring-type absorbable thread lifting combined with liposuction for facial rejuvenation. Methods A retrospective review of 27 cosmetic patients who underwent absorbable barbed thread lifting with liposuction between July 2013 and December 2015 was undertaken. The efficiency of facial rejuvenation was evaluated through a patient satisfaction score and the global aesthetic improvement scale (GAIS). Results Subjects were divided into two groups: thread lifting only and thread lifting combined with liposuction. The mean follow-up period of each group was 8.5 and 9.3 months, respectively. In the thread lifting–only group, the average patient satisfaction score was 2.36 (1=unsatisfied to 4=very satisfied), and the average GAIS score was 2.54 (1=very much improved to 5=worsen). In the thread lifting with liposuction group, the average patient satisfaction score was 3.06, and the average GAIS score was 1.85. Conclusions Thread lifting combined with liposuction showed better patient satisfaction and GAIS results than thread lifting alone, even over a long follow-up period.

생태학적 변인이 출산의도에 미치는 영향 연구

배광일,김경신 한국가족관계학회 2011 한국가족관계학회지 Vol.16 No.2

This study is intended to research general trend and difference of ecological factors on married couples` intension of childbirth and to analyze the interrelation and influence between them. For the research, 600 questionnaires were distributed in the area of Gwangju and Chunnam District to the subjects of the married couples whose wife is aged from 25 to 39. Among the 600 questionnaires collected, 528 responses were valid as data and used for the final analysis. Data analysis was conducted by using SPSS 18.0 Program for WINDOW to calculate the frequency, percentage, average, standard deviation, Cronbach`s α and Pearson`s product-moment correlation coefficient, r, and t-test, one-way ANOVA, and hierarchical regression analysis were also used. To observe the intention of childbirth in an ecological approach, this study selected four factors as the variables such as Individual Organism, Microsystem(Family environment), Exosystem(Childcare environment), and Macrosystem(Value and Policy) centering on the findings of precedent studies, and then constructed each model to analyze them. The analysis showed all the variables such as Individual Organism(Age), Family Environment(Number of children), Childcare Environment(Childcare expenses and Childcare provider), and Macrosystem(Family value and Birth support policy) have an effect on the intention of childbirth. That means the intension of childbirth is affected by multi-dimensional factors in life environment. Thus, if the government expects to increase the birthrate by using a birth-support policy, it is required to analyze birthing in a complex and general ecological approach. The government should carry out other policies associated with childbirth, economic, and family policy along with the birth policy for more effective results.

다중 배당을 고려한 미국형 콜옵션 가격에 대한 연구

배광일 한국파생상품학회 2019 선물연구 Vol.27 No.3

Cassimon et al. (2007) propose a pricing formula of American call options under the multiple dividends by extending Roll (1977). However, because these studies investigate the option pricing formula under the escrow model, there is inconsistency for the assumption of the stock prices. This paper proposes pricing formulas of American call options under the multiple dividends and piecewise geometric Brownian motion. For the formulas, I approximate the log prices of ex-dividend dates to follow a multivariate normal distribution, and decompose the option price as a function of payoffs and exercise boundaries. Then, I obtain an upper bound of the American call options by substituting approximated log prices into the both of the payoffs and the exercise boundaries. Besides, I obtain a lower bound of the price by substituting approximated price only into the exercise boundaries. These upper and lower bounds are exact prices when the amounts of dividends are linear to the stock prices. According to the numerical study, the lower bound produces relatively small errors. Especially, it produces small errors when the dividends are more sensitive to the stock price changes. Cassimon, Engelen, Thomassen, and Van Wouwe(2007)는 Roll(1977)의 연구를 확장하여, 2회 이상의 배당이 있을 때 미국형 콜옵션 가격을 도출했다. 그러나, 위 연구들은 에스크로 모형을 기반으로 분석되었기 때문에, 주식 가격에 대한 가정이 일관성을 가지지 않는다. 본 연구는 배당이 2차례 이상 발생할 수 있는 구간별 기하 브라운 운동 (piecewise geometric Brownian motion) 모형 하에서 적용 가능한 미국형 콜옵션의 근사 가격을 제시하고자 한다. 임의의 시점의 로그주식가격들이 다변량 정규분포(multivariate normal distribution)를 따르도록 함으로써, 미국형 콜옵션의 상한 가격과 하한 가격을 도출할 수 있었다. 수치분석 결과에 따르면, 두 공식 중에서 하한값이 더 우수했다. 특히, 배당의 크기가 주식가격에 더 민감할수록 공식의 정확성이 커짐을 확인할 수 있었다.

복합바스켓옵션의 가치평가

배광일 한국재무학회 2014 한국재무학회 학술대회 Vol.2014 No.05

본 연구는 바스켓옵션(basket options)과 복합옵션(compound options)의 형태가 합성된 복합 바스 켓을 살펴보았다. 복합 바스켓 옵션 자체는 현재 거래되고 있지 않은 상품이지만, 기초자산을 어 떻게 규정하는지에 따라, 기존 바스켓옵션에도, 지주회사의 주식가격에도 적용할 수 있는 개념이 다. 옵션포트폴리오 가치의 고차 모멘트 값을 이용함으로써 몇 가지 가격 근사를 유도해 낼 수 있었으며, 그 중에 상한, 하한 값의 가중평균 방법의 오차가 가장 작은 것을 확인할 수 있었다.

양자 네트워크 기술 동향

배광일 한국통신학회 2022 정보와 통신 Vol.39 No.12

왜도에 기반한 자산분배에 대한 의견

배광일 한국재무학회 2011 한국재무학회 학술대회 Vol.2011 No.11

본 연구는 Low, Pachamanova, and Sim (2011)이 제시한 위험 측도의 특성을 분석하고 문제점을 살펴보았다. Low, Pachamanova, and Sim (2011)은 CARA 효용함수를 바탕으로, 왜도를 반영한 편차 (skewness aware deviation)를 제시했다. 이 위험측도는 분산에 비해 손실위험을 더 잘 잡아준다. 그리고 위 측도를 바탕으로 정의한, 왜도를 반영한 분산(skewnes aware variance)은 자산분배문제를 간단하게 하고, 실증분석에서 분산에 비 해 우월한 결과를 나타낸다고 알려졌다. 하지만 이 위험측도는 상황에 따라 자산의 위험 크기 순서를 바꿀 수 있는 문제점이 있는 것으로 보인다.

기혼여성의 출산 및 출산포기에 영향을 미치는 요인 연구

배광일 한국문화융합학회 2022 문화와 융합 Vol.44 No.7

The low-fertility problem is expected to cause social problems in many areas, such as an increase in the burden of support costs, a shortage of the labor force, and conflicts between generations. Thus, this study was conducted to find policy measures to solve the fertility problem and provide basic data for researches related to childbirth. The study used the data from the 5th (2014) survey to 7th (2018) of the Survey of Women & Families to examine the factors affecting childbirth, childbirth abandonment, and childbirth undecided in married women aged 20 to 49 with childbirth plans, and for that, analysed the actual childbirth behavior during the 4 years. As a result, the analysis results show that there should be the support for counseling or related programs to improve marital relationships, expansion for social support to release the burden of childcare, and resolution of negative fertility environment problems. In addition, there should be the policy supports to make the environment in order to practice the childbirth plan they selected rather than just childbirth encouragement.

子宮破裂 2 例

배광범,홍성환,신면우 한국의학사 1984 診斷과治療 Vol.4 No.12

고차원 양자 얽힘 연구 동향

배광일(Kwangil Bae),이원혁(Wonhyuk Lee) 한국통신학회 2023 한국통신학회 학술대회논문집 Vol.2023 No.6

유치원 교사를 위한 「유아교육지도 자료집」에 실린 동화의 분석

배광애,오선희,조춘자 덕성여자대학교 (덕성여자대학) 1988 德成 幼兒敎育 硏究 Vol.7 No.-