코골이 탐지를 위한 특징 추출 및 머신러닝 모델 연구

유광현(GwangHyun Yu),당탄부(Dang Thanh Vu),르호앙안(Le Hoang Anh),김진영(JinYoung Kim) 한국통신학회 2022 한국통신학회 학술대회논문집 Vol.2022 No.2

질 좋은 수면을 위한 다양한 어플리케이션에 사용되는 수면 중 코골이 탐지를 위한 알고리즘을 위하여 코골이 소리에 대해서 전통적인 머신러닝 기반 모델 및 딥러닝 기반 모델에 적합한 오디오 특징 추출 방법을 제시하고 딥러닝 기반 코골이 탐지모델을 제안한다. 이를 위하여 성인 남성 6명의 자체 코골이 데이터셋을 수집하였고, 이를 특징 추출에 효과적으로 사용하기 위한 전처리 방법을 제안한다. 데이터셋은 머신러닝 기반 모델에 사용될 수 있는 코골이 MFCC 특징 추출 방법과 딥러닝 기반 모델에 사용할 수 있는 코골이 멜 스펙트로그램 특징 추출 방법을 적용하였고, Resnet 모델을 기반으로 코골이 탐지 딥러닝 모델을 구현하여 실험하였다. 실험 결과 코골이 멜 스펙트로그램 특징 추출과 딥러닝 기반 코골이 탐지 모델을 적용했을 때 코골이 탐지 인식률은 98.6%로 다른 특징 추출 방법과 머신러닝 기반 모델을 적용할 때보다 좋은 성능을 보였다.

Reliability and Data Integration of Duplicated Test Results Using Two Bioelectrical Impedence Analysis Machines in the Korean Genome and Epidemiology Study

박보영,양재정,양지현,김지민,Lisa Y.Cho,강대희,신철,홍영습,최보율,김성수,박만석,Sue K. Park 대한예방의학회 2010 예방의학회지 Vol.43 No.6

Objectives: The Korean Genome and Epidemiology Study (KoGES), a multicenter-based multi-cohort study, has collected information on body composition using two different bioelectrical impedence analysis (BIA) machines. The aim of the study was to evaluate the possibility of whether the test values measured from different BIA machines can be integrated through statistical adjustment algorithm under excellent inter-rater reliability. Methods: We selected two centers to measure inter-rater reliability of the two BIA machines. We set up the two machines side by side and measured subjects’ body compositions between October and December 2007. Duplicated test values of 848 subjects were collected. Pearson and intra-class correlation coefficients for inter-rater reliability were estimated using results from the two machines. To detect the feasibility for data integration, we constructed statistical compensation models using linear regression models with residual analysis and R-square values. Results: All correlation coefficients indicated excellent reliability except mineral mass. However, models using only duplicated body composition values for data integration were not feasible due to relatively low R2 values of 0.8 for mineral mass and target weight. To integrate body composition data, models adjusted for four empirical variables that were age,sex, weight and height were most ideal (all R2>0.9). Conclusions: The test values measured with the two BIA machines in the KoGES have excellent reliability for the nine body composition values. Based on reliability, values can be integrated through algorithmic statistical adjustment using regression equations that includes age, sex, weight, and height

A Legal Analysis of the Precedents of Medical Disputes in the Cosmetic Surgery Field

박보영,김민지,강소라,홍승은 대한성형외과학회 2016 Archives of Plastic Surgery Vol.43 No.3

Background Disputes regarding medical malpractice occur between practitioners and patients. As patients have become increasingly aware regarding medical care, an increase in the unexpected side effects of procedures has been observed, thereby leading to an increase in disputes regarding medical malpractice. In this study, we reviewed trends in precedents involving cosmetic surgery-related medical disputes, with the goal of helping to prevent unnecessary disputes in the future. Methods We conducted a search of the judgments made in South Korean courts between 2000 and 2013 that were related to the field of plastic surgery. A total of 54 judgments were analyzed, and the selected precedents were reviewed and classified according to the kind of negligence involved. Results The claim amounts ranged from under 8 million KRW (6,991 USD) to 750 million KRW (629,995 USD). The most common ratio of the judgment amount to the claim amount was 20%–30%. The judgments were classified according to the following categories: violation of the duty of explanation in 17 cases (29%), violation of the duty of care in 10 cases (17%), violation of both duties in 20 cases (35%), and no violation of duty in six cases (10%). Conclusions Cosmetic surgery-related suits require different approaches than general malpractice suits. The Supreme Court requires plastic surgeons to determine the type, timing, methods, and scope of their treatments when considering possible results. Therefore, practitioners should be educated on their rights and responsibilities to enable them to cope with any possible medical dispute that may arise.

상황중심 만화짓기 활동이 초등영어 학습자의 쓰기 능력 및 창의성에 미치는 영향

박보영,김혜련 경인교육대학교 교육연구원 2016 교육논총 Vol.36 No.3

이 연구는 상황중심 영어 만화짓기를 활용한 수업이 초등학교 학생들의 영어 쓰기 능력과 정의적 인 영역 및 창의성에 어떠한 영향을 미치는지 알아보는 데 그 목적이 있다. 이를 위해 경기도 중 소도시 소재 초등학교 6학년 1개 학급 28명을 대상으로 정규 영어수업 시간을 활용하여 15주 동안 실험 수업을 실시하였다. 본 연구의 결과를 요약하면 다음과 같다. 첫째, 영어 쓰기 영역에서 상황 중심 영어 만화짓기 활동은 학생들의 쓰기능력 향상에 긍정적인 영향을 미치는 것으로 나타났다. 이는 배운 주요 표현을 활용하여 상황에 맞게 영어 대사를 직접 만들어 쓰는 과정에서 영어 문장 을 자연스럽게 익힌 결과라 생각된다. 둘째, 정의적 영역에서 영어 만화짓기 활동은 학생들의 흥미 도와 참여도 향상에 효과가 있는 것으로 나타났다. 만화짓기 활동이 학생 주도적으로 이루어지는 만큼 학생들이 과제 수행을 위해 스스로 상황을 설정하고 대사를 짓고 만화를 완성하는 과정에 흥 미를 느끼며 적극적으로 참여했기 때문인 것으로 판단된다. 셋째, 창의적 사고 영역에서 영어 만화 짓기 활동은 학생들의 창의성을 전반적으로 향상시켰으며, 특히 확산적 사고와 문제해결력 향상에 효과가 있는 것으로 나타났다. 이상의 연구 결과는 만화짓기 활동이 영어 능력과 더불어 창의성도 신장시킬 수 있는 유용한 교수 방법이라는 것을 시사한다.

폐 전이를 보이는 두피부의 재발성 선양 낭포 암종에 대한 장기간의 추적관찰

박보영,김양우,강소라 대한성형외과학회 2009 Archives of Plastic Surgery Vol.36 No.4

Purpose: Adenoid cystic carcinoma (ACC) is a rare malignant epithelial neoplasm derived from the salivary glands. In some cases, ACC may arise in other primary sites, such as skin. We report a case of adenoid cystic carcinoma arising the scalp skin of 69 – year - old woman. Methods: A 69 – year - old woman presented with a tender scalp nodule. A local wide excision was performed. Histopathologic examination was revealed the adenoid cystic carcinoma with basaloid cells in a cribriform pattern. The resection margins were free of tumor. Two years later a tumor recurred in the scarred area. The lesion was removed surgically and the histopathological diagnosis of adenoid cystic carcinoma was again established. After two years, tumor recurred again and diatant metastasis of the lung was diagnosed. A surgical wide excision was done and the close regular follow - up for recurrence was done. Two years later, third recurrence of the scalp was observed. We also performed the wide local excision with tumor free margin. Results: We experience the recurrent adenoid cystic carcinoma of the scalp with pulmonary metastasis. We have performed the wide local excision for three times. The patient has been followed up for 10 years with regular work - up for recurrence and metastasis Conclusion: primary cutaneous adenoid cystic carcinoma is a rare skin neoplasm with a high potential for recurrence after local excision. The standard treatment of ACC is wide local excision with tumor - free margins established by permanent section.

아래 눈꺼풀에서 발생한 지방 경화성 육아종의 치험례

박보영,강소라 대한성형외과학회 2008 Archives of Plastic Surgery Vol.35 No.5

Purpose: Sclerosing lipogranuloma is an unusal benign condition of the genitalia following injections into the genitalia with exogenous paraffin or mineral oil. A few cases have been reported in which sclerosing lipogranuloma of the lid was caused by paraffin- containing ointment plugs after the endonasal sinus surgery. A 52-year-old man presented with a painless hard mass of the right lower lid after the MRI scan at the Ophthalmology department. Nine months before, he had undergone right maxilla sinus surgery through the oral incision. And he was also gotten nasal packing with Vaseline gauze after the surgery. Methods: The round shaped two masses in the Right lower lid were approximately 1.0×1.0cm in size. There were no size or color change, bleeding and ulceration. The MRI scan showed a suspicious part of an abscess of benign tumor. Also, He was planned cyst remove through the endonasal surgery due to the mucoid cyst in the right maxillary sinus in the ENT dept. Under the general anesthesia, the patient underwent surgical excision through a subcilliary incision with endonasal sinus surgery. The masses were in deep subcutaneous orbital fat with no connection with right maxillary sinus. Received April 27, 2008 Revised May 2, 2008 Accepted May 27, 2008 Address Correspondence: So Ra Kang, M.D., Department of Plastic and Reconstructive Surgery, College of Medicine, Ewha Womans University, 911-1 Mok-dong, Yangcheon- gu, Seoul, 158-710, Korea. Tel: 02) 2650-5149/Fax: 02)2651- 9821/E-mail: srps@ewha.ac.kr * 본 논문은 제 63차 대한성형외과학회 학술대회에서 포스터발표 되었음. Results: The masses were excised 2.1×0.7cm in size including surrounding necrotic fatty tissue. Histopathological diagnosis was ‘sclerosing lipogranuloma’ due to paraffin or similar substance with fat necrosis and cystic change. This tissue was positive in PAS, S-100, CD68 reaction. Conclusion: It is extremely rare to find a granulomatous orbital lesion arising to a endonasal surgery. In conclusion, if sclerosing lipogranuloma is suspected excisional biopsy should be undertaken. Surgery should be reserved for recurrent or refractory cases when steroids have failed as first-line treatment at the 6-month follow-up examination, There was no complication or recurrence.

[서평] 이념을 탈색한 민족주의와 문명사를 통한 새로운 한국사의 모색

박보영 경북대학교 인문학술원 2018 동서인문 Vol.0 No.9

Informed Consent as a Litigation Strategy in the Field of Aesthetic Surgery: An Analysis Based on Court Precedents

박보영,권정우,강소라,홍승은 대한성형외과학회 2016 Archives of Plastic Surgery Vol.43 No.5

Background In an increasing number of lawsuits doctors lose, despite providing preoperative patient education, because of failure to prove informed consent. We analyzed judicial precedents associated with insufficient informed consent to identify judicial factors and trends related to aesthetic surgery medical litigation. Methods We collected data from civil trials between 1995 and 2015 that were related to aesthetic surgery and resulted in findings of insufficient informed consent. Based on these data, we analyzed the lawsuits, including the distribution of surgeries, dissatisfactions, litigation expenses, and relationship to informed consent. Results Cases were found involving the following types of surgery: facial rejuvenation (38 cases), facial contouring surgery (27 cases), mammoplasty (16 cases), blepharoplasty (29 cases), rhinoplasty (21 cases), body-contouring surgery (15 cases), and breast reconstruction (2 cases). Common reasons for postoperative dissatisfaction were deformities (22%), scars (17%), asymmetry (14%), and infections (6%). Most of the malpractice lawsuits occurred in Seoul (population 10 million people; 54% of total plastic surgeons) and in primary-level local clinics (113 cases, 82.5%). In cases in which only invalid informed consent was recognized, the average amount of consolation money was KRW 9,107,143 (USD 8438). In cases in which both violation of non-malfeasance and invalid informed consent were recognized, the average amount of consolation money was KRW 12,741,857 (USD 11,806), corresponding to 38.6% of the amount of the judgment. Conclusions Surgeons should pay special attention to obtaining informed consent, because it is a double-edged sword; it has clinical purposes for doctors and patients but may also be a litigation strategy for lawyers.

아연결정유의 소지별 결정 생성 결과에 관한 연구

강무창 한국도자학회 2019 한국도자학연구 Vol.16 No.3

This study set out to examine the characteristics of zinc crystalline glaze and analyze the crystallization outcomes by clay, exploring the diversification and expressive possibilities of crystalline glaze colors. Crystalline glaze was first invented in the Orient, after which the West succeeded in its scientific systemization through continuous research. Despite such an achievement, however, the popularization of crystalline glaze has not happened due to its demanding glaze composition and plastic methods. In addition, crystalline glaze is usually used on kaolin and white porcelain clay mainly through the jiggering and slip casting techniques, which indicates that there are many different restrictions on its making methods. The application of crystalline glaze to more diverse clay will help to diversify its colors and making methods according to these clay. This study made a total of ten clay specimens with bases on the market and conducted an experiment in which zinc crystalline glaze was selected for its stable crystallization. One group underwent firing in the state of being laid, and other did oxidative firing at 1250°C inside an electric kiln in the state of being erected. After the firing stage, their crystalline growth was analyzed. The firing experiment results were analyzed, and the analysis results show that crystallization happened in all of the clay, except for earthen clay, with various colors manifested according to the clay. The colors were different according to the iron content of the clay. The silk white porcelain and white porcelain clay specimens produced big-sized crystals, the best state of crystallization, and color development close to white. The Sanbaek, celadon, and Buncheon clay had as a good state of crystalline growth as the white porcelain clay and color development in beige due to the iron content. Crystals were formed on the Sancheong, brown formative, Dongyeong, and white formative clay, but they flew down due to the glaze flowing phenomenon. In the end, there were not many crystals to be observed on these bases. Their color development was in beige with a combination of blue and purple unique to zinc glaze flowing naturally. The Onggi clay had no crystals formed and the color development was matte dark brown. In short, if the characteristics of zinc crystalline glaze in crystalline growth are made in good use of according to clay , they will enable the expression of various colors in the creative process. The findings also demonstrate that the clay of superior crystallization in addition to white clay can diversify the plastic methods including coiling and slab building. 본 연구는 아연결정유의 특성을 고찰하고 각 소지별 결정 생성 결과를 분석하여 결정유 색상의 다양화와 표현 가능성을 모색하는데 목적이 있다. 결정유는 동양에서 처음 출현한 이후로 서구에서 지속적인 연구를 거듭한 결과 과학적으로 결정유약을 체계화 하였다. 그럼에도 불구하고 결정유는 유약조성, 소성방법 등이 까다로워 대중화되지 못하고 있는 실정이다. 또한 결정유는 도토나 백자계열소지에만 사용되고, 주로 물레성형이나 슬립캐스팅 기법으로 제작되어지는 등 제작방식에도 여러 가지 제약이 따른다. 따라서 보다 다양한 소지에 결정유를 적용시켜 봄으로써 소지에 따른 색상의 다양화와 제작방법에도 다각화 할 수 있을 것으로 기대된다. 따라서 본 연구는 시중에서 시판되고 있는 소지 10여종을 시편으로 제작한 후, 실험을 통해 안정적으로 결정이 이루어지는 아연결정유를 선정하여, 한그룹은 눕혀서 소성하고, 한그룹은 세워서 1250°C로 전기가마에서 산화 소성한 후, 결정성장 상태를 분석하였다. 소성실험을 분석한 결과 옹기토를 제외한 모든 소지에서 결정이 생성되었고, 소지에 따라서 다양한 색으로 발색되었다. 이는 소지내의 철분 함유량에 따라 발색이 다르게 나타났다. 실크백자, 백자토 소지 시편에서 결정의 크기가 크고, 결정성장 상태가 가장 좋았으며, 흰색에 가깝게 발색되었다. 산백토, 청자토, 분청토 모두 백자토와 유사한 정도의 결정 성장 상태가 좋았으며, 철분 함유량으로 인해 베이지색으로 발색되었다. 산청토, 갈색조형토, 동영토, 백조형토 등은 결정이 생성되기는 하였으나 유약흐름 현상으로 결정이 흘러내려 결정이 많이 관찰되지는 않았다. 아연유약 특유의 푸른색과 보라색이 섞여있는 자연스럽게 흘러내리는 듯한 베이지색으로 발색되었다. 옹기토는 결정이 생성되지 않았고 매트질의 진한 갈색으로 발색되었다. 위 실험 내용을 종합하면 소지에 따른 아연결정유의 결정성장 특성들을 잘 활용한다면 작품제작에 있어, 다양한 색상표현이 가능하고, 백토 이외의 결정생성이 우수했던 소지를 활용하여 코일링, 판성형 등 성형방법도 다양화 할 수 있는 가능성을 확인하였다.

조선시대 중층목조건축물 상하층 접합부에 관한 연구

박보영,전봉희 한국건축역사학회 2016 한국건축역사학회 학술발표대회논문집 Vol.2016 No.춘계