Changes in smile index after correction of deep nasolabial fold using a combination of polydioxanone thread and hyaluronic acid filler

Hana Kwon(Hana Kwon),Hyemin Oh(Hyemin Oh),Hyunjee Chae(Hyunjee Chae),Pattaraporn Thiangthae(Pattaraporn Thiangthae ),Kyoung-Jin Kang(Kyoung-Jin Kang) 대한미용의학회 2022 대한미용의학회지 Vol.6 No.2

Background: Filler injections are commonly used to soften deep nasolabial folds (NLF) by restoring volume in the depressed parts of fold. Recently, a combination technique using hyaluronic acid filler and polydioxanone (PDO) thread significantly improves deep NLF and induced changes in smile. Objective: This study retrospectively confirmed the effects of this combination therapy, focusing on smile changes. Methods: The NLF was divided into 3 parts: the lateral folded part (LFP), medial depressed part (MDP), and central creased part (CCP). Between November and December 2021, 14 patients underwent the combination treatment; of these, 11 were enrolled, excluding 3 who were not properly followed up. On average, 5.82±0.87 (right) and 5.73±0.47 (left) PDO mesh threads (6.0 cm length) were sequentially inserted into the LFP, MDP, and under the CCP of each NLF. Following this, an average of 1.82±0.71 ml (right) and 1.92±0.75 ml (left) of the filler was also sequentially injected into each NLF in a similar manner. They were mainly placed in the superficial and deep fat layers in the entire NLF and sub-malar areas. Smile index was measured during the fully expanded smile stage. The follow-up period was 3 months. The results were estimated using pre- and post-operative photographs. Results: Three months after the combination treatment, patients were pleased with the softening of their NLF. As indicated by the increased smile index (inter-commissural width/inter-labial gap), the old and expanded smile changed to younger and less expanded smile. The original smile type (eight and three patients with the commissure and cuspid types, respectively) remained unchanged. The contour changes in each smile varied according to the smile type. This could be explained by combination treatment’s NLF correction, which restricts facial expression muscle movement. Conclusion: These results demonstrate definite evidence of softening of the NLF, a youthful smile, and an increased smile index.

Status of provision of semi-permanent makeup on YouTube in South Korea

Hana Kwon,Chang-Won Koh,Yong-Il Shin 대한미용의학회 2020 대한미용의학회지 Vol.4 No.2

Background: YouTube, the most used media platform in the world today, is very universally used by people for getting information. Semi-permanent makeup, which is illegal when practiced by non-medical personnel, is easily accessible everywhere, including social media platforms such as YouTube. Objective: The purpose of this study is to find out the status of semi-permanent makeup being introduced on YouTube. Methods: Using the search term “Semi-Permanent Makeup” with YouTube’s search filter function, this study collected 362 videos uploaded in 2020 based on July 21, 2020, and analyzed by types of content, type of uploader, treated area, procedure object, and classification of video content. Results: The main uploaders of semi-permanent makeup with YouTube are non-medical workers, especially uploading by education institutions (57%). In the survey according to the content classification, the introduction of the practice of semi-permanent makeup was the most at 53%. The most frequently introduced treatment site was eyebrow. Conclusion: Through this research, we can see that semi-permanent makeup on YouTube is mainly introduced by non-medical personnel, and the contents of eyebrow treatment are dominated.

Effect of microneedle radiofrequency on scars of transcutaneous lower blepharoplasty

Kwon Hana,Chang Hosun,Kim Ha-Young,(Safi)Kang Kyoungjin 대한미용의학회 2021 대한미용의학회지 Vol.5 No.2

Despite the popularity of transcutaneous lower blepharoplasty (TLB) for the correction of the aged lower lids, ectropion, scar long the incision line, persistent skin laxity with fine wrinkles remain to be a huge setback associated with the procedure. With the advance of recent technologies, scar treatment methods using various kinds of devices have been widely adopted. Among them, fractional microneedle radiofrequency (FMR) has been proven to be highly effective on the improvement of acne scars, widened pores, and skin laxity by means of soft tissue regeneration. A fractional microneedle device called the InusTM developed in Korea exhibits unique properties of delivering bipolar radiofrequency current through specialized vacuum edge line for optimal needle insertion into highly sensitive areas such as the eyelid and the neck. Usage of the InusTM to treat patients experiencing complications from TLB have shown remarkable improvement in various aspects not only limited to the improved appearance of ectropion, scars, wrinkles, skin thickness and laxity, but also the contour of the eyelid and the overall facial volume, and shape. The report will delineate findings from three clinical cases that suggest the efficacy and safety of FMR on the rejuvenation of the lower lids.

Rejuvenating and contouring effect of bipolar fractional microneedle radiofrequency on the lower eyelid

Kwon Hana,Maschamadol Raweewat,Chang Hosun,Kang Kyoungjin (Safi) 대한미용의학회 2022 대한미용의학회지 Vol.6 No.1

Background: Fractional microneedle radiofrequency (FMR) devices are used for non-invasive facial rejuvenation, with aging lower eyelids a popular area for improvement. However, treating lax eyelid skin, particularly determining the exact depth to insert the needle, remains challenging. Objective: To evaluate Inus—an FMR device that uses a bipolar current with a specialized vacuum edge line for optimal needle insertion in lax skin—on aging lower eyelids. Methods: Eleven Korean women (22 eyes) with aging lower eyelids who visited the Seoul Cosmetic Surgery Clinic in 2017 were included. After applying topical anesthesia, an Inus disposable tip with 25 insulated microneedles was used on the lower lids and lateral canthal regions, including temporal hollows. Microneedles of depth 1.0 mm or 0.8 mm were used to apply FMR of 0.5 MHz or 2.0 MHz, respectively, to the entire lower lid during three sessions at 2-week intervals. Morphological and statistical analyses of changes in the horizontal palpebral width, canthal tilt, and distance of the lid-cheek junction were performed using pre-and postoperative photographs. Results: Improvements in lax, deflated, wrinkles on the lower eyelids with scarring, and syringoma were observed. The lower lid contour changed from round to straighter, indicating improved laxity. Decreased lid-cheek junction (p<0.05) and increased canthal tilt (p<0.05) and horizontal palpebral width (p<0.05) were estimated. The mild erythema disappeared within 1-2 days. Mild ectropion (one case) in the case of protruded eyes with thin skin and unexpected transverse wrinkles at the medial part of the lids (two cases) were observed. Conclusion: Total rejuvenation of aging lower lids without serious complications was demonstrated. Therefore, Inus is suitable for treating aging lower eyelids safely.

Anti-osteoporosis effects of cheonggukjang and doenjang extracts using soybean cultivar with high content of isoflavone

Hana Kwon,Jiwon Kim,Daeun Song,Eunseop Kim,Jiwon Jung,Youjin Lee,Hyeah Yu,Namjoo Kang 한국식품영양과학회 2019 한국식품영양과학회 학술대회발표집 Vol.2019 No.10

고용-산출 가중입지계수(WLQ)를 이용한 지역투입산출표 추정

권하나 ( Hana Kwon ),최성관 ( Sung-goan Choi ) 한국경제학회 2021 經濟學硏究 Vol.69 No.2

지역투입산출모형(RIO모형)은 지역정책의 수립·평가에서 매우 효과적인 수단이다. 그러나 그 유용성에도 불구하고 조사에 의한 RIO모형 작성에는 상당한 비용과 기초자료가 필요하므로, 비조사 혹은 부분조사에 의한 모형작성 방법이 연구자들의 주목을 받아왔다. 본 연구는 비조사법 RIO모형 추정을 위한 대안적 방법으로서 가중입지계수(WLQ) 방법을 제안하고, 실증분석을 통해 그 타당성을 검증하고자 하는 것이다. 실증분석 결과, WLQ방법은 기존 연구방법에 비해 비조사법 RIO모형이 갖는 과대추정 및 영향력계수 왜곡 문제를 개선할 수 있는 모형추정 결과 및 적합성을 보여주었다. 그리고 이 방법은 지역의 규모 특성과 산업별 특성을 RIO모형 작성에 반영할 뿐 아니라, 기초자료가 충분치 않은 지역의 경제파급 효과 분석 및 전략산업 발굴 등에도 적용할 수 있음을 시사한다. The regional input-output model (RIO model) is an effective analytical tool in establishing and evaluating regional policies. However, despite its usefulness, a considerable cost and statistical data are required to create a RIO model by a survey method, and thus non-survey or partial survey methods have attracted researchers. The purpose of this study is to propose the weighted location quotients (WLQ) method as an alternative to a non-survey method and to verify its validity. This study shows that the WLQ method yields estimation results and suitability that can improve the overestimation and distortion problems of the non-survey RIO model compared to the previous methods. In addition, this can be applied not only to reflect the characteristics of the size of the region and the productivity of each industry in the creation of the RIO model, but also to analyze the economic impact in a region where statistical data are not sufficient.

현대판 마녀사냥을 유발하는 기제에 대한 비판적 담론분석 : 배우‘고(故) 이선균’사건 언론 및 미디어 보도 중심으로

권하나(Hana Kwon),정정주(Chung Joo Chung) 경북대학교 사회과학연구원 2024 사회과학 담론과 정책 Vol.17 No.1

본 연구는 도덕적 죄에 대한 사회적 처벌의 윤리적 문제를 다루며, 중세 유럽의 마녀사냥 메커니즘을 경유하여 오늘날 언론 및 미디어가 공인에 대한 사회적 낙인과 여론재판을 조장하는 기제로서 어떻게 기능하는지를 탐구하였다. ‘고(故) 이선균’ 사건을 중심으로, 공인의 사생활이 알권리 명분 아래 무분별하게 공개되고, 마녀사냥의 희생양으로 지목되는 과정을 조명하였다. 본 연구는 단편적 현상으로 인식되는 현대판 마녀사냥의 개념을 재정립하고자 하였다. 페어클로의 비판적 담론분석을 활용하여 텍스트 분석, 담론의 실천, 사회문화적 실천을 아우르는 변증법적 접근으로 주요 이슈를 국면별로 분석하였다. 분석결과, 마녀사냥이 과거의 잔재가 아닌, 오늘날 사회적 처벌 과정에서 재현된 심각한 사회적•윤리적 문제임이 나타났다. 본 연구는 언론 및 미디어의 행위가 개인의 명예와 인권을 무분별하게 침해할 수 있는 디지털 시대에 개인권 보호의 중요성을 강조하였다. This study addresses the ethical issues arising from social punishment for moral transgressions and explores how the mechanisms of witch hunts in medieval Europe function today through the media and press as a means to conduct public trials against and stigmatize public figures. Considering the case of the late Sun-kyun Lee, this research highlights the process by which public figures private lives are indiscriminately exposed under the guise of the right to know, marking these figures as victims of witch hunts. This study redefines the concept of modern witch hunts, perceived as a fragmentary phenomenon, and utilizes Faircloughs critical discourse analysis to examine the main issues through a dialectical approach that encompasses text analysis, the practice of discourse, and socio-cultural practices. The findings reveal that witch hunts are not merely remnants of the past, but also represent a severe social and ethical issue reincarnated in todays process of social punishment. The actions of the media and press suggest a risk to personal honor and human rights, further emphasizing the importance of privacy rights in the digital age. By revisiting the cruelty of witch hunts triggered by the tragic death of an actor, this study promotes the cessation of such phenomena.

신한울 3 · 4호기 건설취소가 울진군 지역경제에 미치는 영향

권하나(Kwon, Hana),이재민(Lee, Jaimin),장지상(Chang, Jisang) 한국지역사회학회 2019 지역사회연구 Vol.27 No.3

최근 정부의 에너지정책의 변화로 울진지역에 건설 예정이던 신한울 3·4호기의 건설이 보류되어 지역주민의 반발을 사고 있다. 신한울 3·4호기의 경우 원전건설에 따른 주민지원 사업에 대한 협의를 마치고 실시설계를 진행하고 있던 중 건설이 보류된 만큼, 이러한 반발여론은 원전건설의 지역경제 파급효과에 대한 지역주민의 기대감 좌절에서 비롯된 것으로 볼 수 있다. 본 연구에서는 신한울 3·4호기 건설의 지역경제 파급효과를 산업연관분석을 통해 분석함으로써 울진지역주민의 좌절된 기대감의 크기를 정량적으로 추정하고, 울진군 지역주민을 대상으로 한 설문조사 결과를 토대로 정책적 시사점을 찾아보았다. 분석결과 신한울 3·4호기의 건설이 취소됨으로써 건설예정기간(2018-2023) 동안 매년 울진지역에 생산유발액 1,520억 원, 부가가치 유발액 653억 원, 소득유발액 433억 원, 그리고 고용유발 875명에 이르는 부(負)의 경제적 파급효과가, 그리고 2024년 이후 60년간의 운전예정기간에는 매년 생산유발액 1조 4,741억원, 부가가치 유발액 5,456억 원, 소득유발액 869억 원, 그리고 고용유발 1,389명에 이르는 부(負)의 경제적 파급효과가 있을 것으로 나타났다. 신한울 3·4호기의 건설취소가 지역경제에 미칠 이러한 부(負)의 파급효과에 대해서는 대부분의 울진지역 주민들도 충분히 인식하고 있으며, 나아가 향후 지역경제 및 지역사회의 침체를 우려하고 있는 것으로 드러났다. 이러한 우려가 에너지정책의 변화에 대한 지역사회의 수용성 저하로 귀결되고 있으므로, 중앙정부는 에너지정책의 변화가 울진지역에 초래할 부(負)의 경제적 파급효과를 상쇄할 수 있도록 새로운 지역발전정책의 수립과 시행을 적극적으로 지원할 필요가 있다. Recently, ‘Shinhanul 3·4’ nuclear power plants, which had been planned to be built in Uljin county, has been canceled due to the change of national energy policy. This is expected to cause a big effect on the Uljin regional economy. In this study, we try to analyze the regional economic effect of this cancellation quantitatively through the inter-industry analysis, and find some policy implications based on the results of the survey towards the residents in the Uljin county. The cancellation of the Shinhanul 3·4 is estimated to bring about 152.0 billion won loss in production, 65.3 billion won loss in value added, 43.3 billion won loss in income, and 875 employment loss per year during 6 years 2018-2023, and 1,474.1 billion won loss in production, 545.6 billion won loss in value added, 86.9 billion won loss in income, and 1,389 employment loss per year during 60 years since 2024. Most of the residents of the Uljin county recognized this negative economic effect of the cancellation of the Shinhanul 3·4, and concerned about the future of the regional economy. This concerns result in the degradation of the acceptability for the changes in the national energy policy. The government needs to support for the Uljin county to design and carry out the new regional development plan, which can offset the negative effect of the cancellation of the Shinhanul 3·4 nuclear power plants.

Histogram-Based Image Hash 성능 개선 방법

권하나(Hana Kwon),김소영(SoYoung Kim),김형중(HyoungJoong Kim) 한국방송·미디어공학회 2008 한국방송공학회 학술발표대회 논문집 Vol.2008 No.-

Image hash는 영상에서 유사성을 찾는 방법으로 사용될 수 있는 기술자(Descriptor)로 특징지을 수 있다. 많은 image hash 방법중에 Histogram-based image hash는 Histogram equalization을 제외한 보통 잡음 및 다양한 기하학적 변조를 주어도 같은 그림을 찾아내는데 강력한 기능을 수행한다. 본 논문에서는 Histogram-Based Hash를 생성함에 있어 서로 다른 3개의 bin의 관계를 이용하여 Hash를 생성하였다. 본 논문은 이를 통해 영상의 유사성을 찾아내는데 있어 원본영상에 대해 기하학적 변조뿐만 아니라 상대적으로 성능이 약했던 Histogram equalization을 이용한 변조에 대해서도 성능이 개선되었다. 또한 가우시안 필터링의 알파 값을 다르게 지정함으로 인하여 생성되는 두 히스토그램을 이용하여 기존의 방법보다 성능이 개선되었다.

지역투입산출모형 작성을 위한 자료혼합법(DHM) 연구: 산업별 고용탄력성 자료의 활용

권하나 ( Hana Kwon ),최성관 ( Sung-goan Choi ) 한국경제학회 2020 經濟學硏究 Vol.68 No.1

본 연구는 산업별 고용탄력성 정보를 활용하여 생산지표와 고용지표 간의 괴리가 발생하는 산업을 식별하고, 이러한 산업에 대해 우월한 자료(superior data)를 지역투입산출모형(RIO모형) 작성에 이용하는 자료혼합의 방법과 그 타당성을 실증적으로 검정하고자 하는 연구이다. 실증분석 결과, 고용탄력성이 산업별로 상이 할 경우 고용지표만 이용하는 기존의 비조사법 RIO모형 추정은 산업별 생산성 격차를 반영하지 못함으로써 현실경제의 산업간 상호의존성을 왜곡할 수 있다는 것을 보여준다. 그리고 본 연구에서 제안하는 자료혼합법은 기초통계자료가 충분치 않은 지역의 RIO모형 추정뿐만 아니라, 지역투입산출표 연장표 작성과 같은 RIO모형의 시간적 확장문제와 지역선도산업 발굴문제 등에도 적절히 활용될 수 있음을 시사한다. The purpose of this study is to propose the data hybrid method (DHM) which combines superior data to construct regional input-output models (RIOM) and verify its validity through empirical analysis. From the empirical results, if employment elasticity is different by industry, the previous non-survey RIOM estimations using only employment data may distort the interdependence of industries in an economy. In addition, the DHM proposed in this study is suitable not only for estimating RIOM in areas where basic statistical data are insufficient, but also for the time extension problem of RIOM and the problem of discovering the regional key sectors.