불임여성의 식생활 특성

오지수,정혜자,권혁찬,박원일,궁미경,김화영,Oh, Ji-Soo,Jung, Hye-Ja,Kwon, Hyuck-Chan,Park, Won-Il,Koong, Mi-Kyoung,Kim, Wha-Young 대한생식의학회 2003 Clinical and Experimental Reproductive Medicine Vol.30 No.4

Objective: The purpose of this study was to identify dietary factors related to infertility in Korean women through a case-control study. Methods: The case group was composed of 236 women who had been diagnosed as infertility in hospital. The control group of 181 healthy women with children were recruited from local immunization centers. Socio-economic status, medical history, dietary intakes using food frequency questionnaire and stress were surveyed by interview. Anthropometric measurements were made and the causes of infertility were identified through medical records. Fasting blood samples were taken from subgroup of the subjects. Results: The mean age of infertile and control groups was 31.1 and 32.4 years, respectively and the difference was statistically significant. The mean Body Mass Index of infertile women was not significantly different from control women, however, Waist/ Hip Ratio and Triceps Skinfolds Thickness were significantly lower in infertile women than in control women. The dietary intake status was generally satisfactory in both groups. The intakes of energy, protein, fat, carbohydrate, retinol, vitamin B2 and niacin were lower in infertile women than in control women. The infertile women also showed lower intakes of animal foods. No differences were found between two groups in serum concentrations of albumin, hemoglobin, Fe, TIBC, total cholesterol, HDL-cholesterol, LDL-cholesterol, triglyceride, C3, IgA, IL-2, however, infertile women showed higher levels of Zn and IgG. The stress score was higher in infertile women. Conclusions: From the results of this study, dietary factors and nutritional status do not seem to be directly related to infertility. However, the intertile women have lower nutrient intake and lower body fat content than control women. Further researches are needed according to the causes of infertility for long term to establish the relationship between dietary factors and infertility.

2급 치근 이개부 치료 시 합성골 이식 및 혈소판 농축 혈장의 골재생 효과에 대한 디지털 공제술의 정량적 분석

오지수,임성빈,정진형,Oh, Ji-Soo,Lim, Sung-Bin,Chung, Chin-Hyung 대한치주과학회 2001 Journal of Periodontal & Implant Science Vol.31 No.2

The purpose of this study was to evaluate effect of platelet rich plasma on the treatment of Grade II furcation involvement, with and without porous resorbable calcium carbonate($Biocoral^{(R)}$)in humans by digital subtraction radiography. 15 teeth(control group) were treated with porous resorbable calcium carbonate($Biocoral^{\(R)}$), and 15 teeth(test group) were treated with porous resorbable calcium carbonate($Biocoral^{(R)}$) and Platelet Rich Plasma. The change of bone density was assessed by digital subtraction radiography in this study. The change of mineral content by as much as 5%(vol) could be perceived in the subtracted images. The change of mineral content was assessed in the method that two radiographs are put into computer program to be overlapped and the previous image is subtracted by the later one. Both groups were statistically analyzed by Wilcoxon signed Ranks Test and Mann-whitney Test using SPSS program(5% significance level). The results were as follows: 1. In test group, the radiolucency in 3 months after surgry were significantly increased than 1 month after surgery(p<0.05). 2. In test group, there were no significant difference between 1 month after surgery and 6 months after surgery(p>0.05). 3. In test group, the radiopacity in 6 months after surgery were significantly increased than 3 months after surgery(p<0.05). 4. In control group, the radiolucency in 3 months and 6 months after surgery were significantly increased than 1 month after surgery(p<0.05). 5. In control group, the radiopacity in 6 months after surgery were significantly increased than 3 months after surgery(p<0.05). 6. There were no significant difference between test group and control group at 1 month, 3 months after surgery, but radiopacity in test group were significantly increased than control group at 6 months after surgery(p<0.05). In conclusion, Platelet Rich Plasma can enhance bone density.

선양치성낭의 임상 및 병리조직학적 분석

오지수,김수관,김학균,윤정훈,Oh, Ji-Su,Kim, Su-Gwan,Kim, Hak-Kyun,Yoon, Jung-Hoon 대한악안면성형재건외과학회 2007 Maxillofacial Plastic Reconstructive Surgery Vol.29 No.5

The glandular odontogenic cyst is an uncommon odontogenic cyst as a distinct entity. We reviewed a series of 7 glandular odontogenic cysts of the jaws experienced between 2003 and 2006 at the department of Oral and Maxillofacial surgery, Chosun university. The study group consisted of 3 females (42.9%) and 4 males (57.1%), with an age range of 31 to 75 years and mean age was 58.6 years. The maxilla was involved in 5 cases (71.4%) and the mandible in 2 cases (28.6%). Three cases involved impacted tooth. Clinically 6 cases showed swelling and tenderness. All the lesion presented well-defined unilocular radiolucent lesion radiographically. Provisional clinical diagnosis was varied, incisional biopsy was done in 1 case. Histopathologically, those were lined by non-keratinized stratified epithelium and thickened epithelial segments (plaques) are seen within the lining epithelium. And epithelial lining contains eosinophilic cuboidal type cells, mucous cells and mucin pools in microcystic areas are identified. All cysts were treated by enucleation. All cases are not recurred during follow up period.

가상 지휘자의 애니메이션을 위한 실감나는 손동작 저작

오지수(Jisoo Oh),정진우(Jinwoo Jeong),채영호(Youngho Chai) 한국정보과학회 2023 한국정보과학회 학술발표논문집 Vol.2023 No.12

스마트폰 센서를 이용한 딥러닝 기반 실내 이동거리 추정

오지수(Oh Ji Soo),김승구(Kim Seungku) 한국통신학회 2020 한국통신학회 학술대회논문집 Vol.2020 No.8

안전한 클라우드 서비스 환경을 위한 다중 웹 방화벽

오지수 ( Ji-soo Oh ),이승현 ( Seung-hyun Lee ),박민우 ( Min-woo Park ),정태명 ( Tai-myoung Chung ) 한국정보처리학회 2013 한국정보처리학회 학술대회논문집 Vol.20 No.1

클라우드 컴퓨팅은 최근 IT 기술 중 가장 주목받는 분야로, 클라우드 컴퓨팅 자원을 네트워크 기반으로 제공하는 기술이다. 클라우드 환경에서 소프트웨어를 개발하는 경우 가상 환경을 이용해서 작업 비용을 대폭 절감할 수 있는 이점이 있지만, 웹 어플리케이션 취약점을 이용한 웹 기반 공격 등의 보안 문제가 남아있다. 클라우드 컴퓨팅이 인터넷을 통해서 서비스를 제공하기 때문에 웹 보안 향상이 클라우드 컴퓨팅의 중요한 보안 이슈이다. 본 논문에서는 클라우드 시스템의 웹 보안 문제를 해결하기 위해 클라우드 컴퓨팅을 기반으로 다중 웹 방화벽(Web Application Firewall)을 구축하는 방안을 제안하고자 한다.

딥러닝 기반 실내 이동 속도 예측을 위한 데이터 증강 기법

오지수(Oh Ji Soo),김승구(Kim Seungku) 한국통신학회 2021 한국통신학회 학술대회논문집 Vol.2021 No.2

딥러닝에서 좋은 성능을 얻기 위해서는 충분한 양의 데이터 세트가 필요하다. 하지만 충분한 양의 데이터를 수집하는 데에는 많은 시간과 비용이 소모된다. 현재 이러한 문제를 해결하는 방법이 연구되고 있으며, 그중 대표적인 방법이 데이터 증강(data augmentation) 기법이다. 본 논문에서는 스마트폰으로 3축 가속도 센서, 3축 자이로 센서, GPS 센서 데이터를 수집하여 딥러닝 모델을 통해 이동 속도를 예측한다. 수집된 데이터의 양이 적을수록 정확도가 낮아지는 문제를 해결하기 위해 데이터 증강 기법을 적용하였고, CNN 모델을 사용하여 데이터 증강 기법의 유효성을 평가하였다.

사진보정 앱 사용자의 이용 태도에 관한 연구 - SNOW 사진보정 앱 중심으로 -

오지수 ( Oh Ji-su ),김종무 ( Kim Jong-moo ) 커뮤니케이션디자인학회(구 시각디자인학회) 2018 커뮤니케이션 디자인학연구 Vol.65 No.-

인터넷 기반의 서비스 외에도 스마트폰 자체의 고유 기능 중 소비자들이 가장 많이 사용하는 기능인 카메라는 스마트폰 기능에 가장 중요한 부분을 차지하고 있다. 스마트폰 카메라의 기능 향상은 스마트폰 카메라 사용빈도 또한 늘어났으며 사용자들은 자신이 찍은 사진을 그대로 인터넷에 게시하기 보다는 사진보정 애플리케이션을 통해 보정된 사진을 공유하기 시작하였다. 스마트폰 선택에 있어 카메라 기능과 사진 보정을 통한 인터넷 공유 기능에 소비자의 관심이 높은 상황에서 사진보정 앱과 관련한 이용자의 태도를 알아보는 하는 것은 의미 있는 연구라 사료된다. 이에 본 연구는 SNOW 사진보정 앱 사용자의 이용동기가 충성도와 만족도에 미치는 영향과 이용자의 충성도와 만족도가 SNOW 사진보정 앱 지속사용의도에 미치는 영향이 어떠한지를 분석하였다. 연구 결과 첫째, SNOW 사진보정 앱 이용 동기 중 ‘연동성’은 충성도에 긍정적인 영향을 주었으나 ‘유희성’과 ‘기능성’은 유의한 영향을 주지 않았다. 둘째, SNOW 사진보정 앱 이용 동기 중 ‘기능성’과 ‘유희성’은 만족도에 긍정적인 영향을 주었으나 ‘연동성’은 유의한 영향을 미치지 않는 것으로 나타났다. 셋째, SNOW 사진보정 앱 이용자의 만족도와 충성도가 높아질수록 이용자의 지속사용의도가 높아지는 것으로 나타났다. 본 연구는 추후 사진보정 앱을 제작하는 제작자들에게 사용자의 태도가 어떠한지를 이해하는데 기초자료가 될 것이다. Camera, the function which is most frequently used by consumers out of the own functions of smartphone in addition to the services based on Internet assumes the most important part of smartphone functions. Due to the improved function of smartphone camera, smartphone camera is used more frequently and users begin to share the photos rectified through photo rectification application instead of merely posting photos they take on Internet. Since consumers are much interested in Internet sharing function through camera function & photo rectification in selecting smartphone, investigating the attitude of user related to photo rectification app is deemed to be meaningful study. Thus, this study analyzed how users’ motive to use SNOW photo rectification app influences loyalty and satisfaction as well as how users’ loyalty and satisfaction influences the intention to use SNOW photo rectification app continuously. According to the study, first, although ‘linkage’ positively influences ‘loyalty’ out of the motives to use SNOW photo rectification app, ‘playfulness’ and ‘functionality’ did not influence significantly. Second, although ‘functionality’ and ‘playfulness’ positively influence satisfaction out of the motives to use SNOW photo rectification app, ‘linkage’ did not influence significantly. Third, it is found users’ intention of continuous use is higher when their satisfaction and loyalty in SNOW photo rectification app is higher. This study will be basic data for producers of photo rectification app to understand the attitude of user later.

초등영어 온라인 수업: 도전과 극복, 남은 과제

오지수(Oh, Ji Su),심창용(Sim, Chang-Yong) 한국초등영어교육학회 2020 초등영어교육 Vol.26 No.3

With the outbreak of the Corona virus pandemic, schools started their new semester with online classes. While suffering from numerous difficulties, teachers have overcome numerous obstacles to achieve success with online classes. This paper is aimed at reporting on those difficulties and obstacles, how teachers overcame them, and the remaining challenges. Primary English teachers turned out to be in a worse situation than teachers of other subjects due to the heavier dependence on multimedia materials provided by text publishers and the necessity of interactive communication in language acquisition. Issues with copyrights and portrait rights, difficulties in dealing with programs and equipment for online classes, problems of achievement division, and resulting burnout symptoms were addressed. In order to prepare for future online classes, active problem solving is required not only by teachers utilizing collective intelligence but also by educational agencies.

DPI 기술 적용에 따른 사용자 개인정보 문제 해결방안

오지수 ( Ji-soo Oh ),이승현 ( Seung-hyun Lee ),박민우 ( Min-woo Park ),정태명 ( Tai-myoung Chung ) 한국정보처리학회 2012 한국정보처리학회 학술대회논문집 Vol.19 No.2

기존의 네트워크 관문에서 트래픽을 검사하는 장치들은 Application 계층의 데이터를 검사할 수 없어 보안에 한계가 있다. 이를 보완하기 위해 Application 계층까지 패킷을 분석할 수 있는 Deep Packet Inspection (DPI)기술이 개발되어 보안 강화에 사용되고 있다. 하지만 기업에서 DPI 기술을 이용하여 고객의 개인정보를 무단으로 수집 및 이용하면서 DPI 기술에 따른 개인정보 침해가 우려된다, 본 논문에서는 DPI 기술을 통한 사용자 정보 수집 시 개별 사용자의 동의를 받을 수 있는 방안을 제안하며, 이를 통해 DPI 기술에 따른 사용자 개인정보 문제를 해결하고자 한다.