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Movielens 데이터를 이용한 영화 추천 시스템 개발
박윤기 ( Yoon-ki Park ),정현철 ( Hyun-cheol Jung ),홍지원 ( Ji-won Hong ),김상욱 ( Sang-wook Kim ) 한국정보처리학회 2011 한국정보처리학회 학술대회논문집 Vol.18 No.2
본 논문에서는 영화를 즐기는 이용자들에게 영화를 추천하는 추천 시스템 개발에 대해 논한다. 본 논문에서는 유저 기반 협업 필터링 기술을 적용한 영화 추천 웹 서비스를 개발하였고, 웹 크롤링 기술을 이용하여 추천된 영화의 상세한 정보를 제공할 수 있도록 하였다. 유저 스터디를 수행한 결과 이 영화 추천 시스템을 이용한 사용자들의 만족도는 대체로 높았다.
최윤영 ( Yoon Young Choi ),이동욱 ( Dong Uk Lee ),박성철 ( Sung Chul Park ),박윤기 ( Yoon Ki Park ),이두진 ( Du Jin Lee ),이승호 ( Sung Ho Lee ) 대한산부인과학회 2006 Obstetrics & Gynecology Science Vol.49 No.6
Primary cancer of the vagina is very rare, accounting for 1-2% of gynecologic malignancies. Vaginal cancers are composed of primary and metastatic one. Of them, metastatic cancers constitute the majority of vaginal cancers, as 80-90%. Differentiating as type of cancer cell, the squamous cell carcinoma is the most common, as 80-90%, but, the adenocarcinoma is rare, as 9% of primary vaginal cancer. Same as other disease, if there is a symptom, the 5 year-survival rate of the vaginal cancer is 37%, but, if not in early stage, that becomes higher, as 61%. So, the early diagnosis and treatment are very important for patients` prognosis. A woman who had underwent both ovarian cystectomy due to both ovarian endometriomas 2 years ago visit us complaining of vaginal spotting, mild Lower abdominal discomfort and pelvic pain for 2 months. She underwent operation at the impression of primary vaginal cancer and was irradiated. We report a case of primary endometrioid adenocarcinoma of the vagina with review of Literatures.
박성철 ( Sung Chul Park ),박윤기 ( Yoon Ki Park ) 대한주산의학회 2009 Perinatology Vol.20 No.1
Aplastic anemia is a serious hematological disorder characterized by pancytopenia and bone marrow hypocellularity. Pregnancy associated with aplastic anemia is fortunately uncommon considering the significant morbidity and mortality for both mother and the fetus. The risk to the mother is mainly in the form of hemorrhage and sepsis, while the fetus may suffer from growth restriction and even intrauterine death. Maternal mortality has been reported variously from 20% to 60%. The relationship between pregnancy and aplastic anemia remains controversial. We experienced a patient with severe aplastic anemia in pregnancy who was treated with supportive transfusion of red blood cells and platelets. Here, we present a case with a brief review of the literature.
박성철 ( Sung Chul Park ),박윤기 ( Yoon Ki Park ),이두진 ( Doo Jin Lee ),이승호 ( Sung Ho Lee ) 영남대학교 기초/임상의학연구소 2007 Yeungnam University Journal of Medicine Vol.24 No.2S
Clear cell adenocarcinoma of cervix is a very rare malignancy of the uterine cervix. The etiology and pathogenesis are unclear. Clear cell adenocarcinomas have been reported most commonly in women with a history of in utero exposure to diethylstilbesterol (DES), these tumors also can develope in the absence of exposure to DES. These tumors account for 4% to 9% of adenocarcinomas of the cervix. We report a case of clear cell adenocarcinoma in the uterine cervix of 40 years-old women who was not related to DES with a brief review of literature.
일측성 질폐쇄 및 동측 신장 무발생을 동반하는 중복자궁 1 예
박성철 ( Sung Chul Park ),이두진 ( Doo Jin Lee ),이승호 ( Sung Ho Lee ),박윤기 ( Yoon Ki Park ) 영남대학교 기초/임상의학연구소 2007 Yeungnam University Journal of Medicine Vol.24 No.2S
Frequency of female genital congenital abnormality is about 0.2%. We suspect female as uterine abnormality with hematocolpos, who after menarche with progressive abdominal pain during menses, in associated with the finding of growing pelvic mass and not visible unilateral kidney at urography. Commonly it was fined with acute lower abdominal pain at puberty. Early diagnosis is very important to treatment and to fertility of patient. The simple and adequate treatment of the condition is incision of the obstructed vaginal septum providing adequate drainage of the retained blood. If diagnosis of this disease is late, it may occur complications of hematocolpos, hematosalphinx, endometriosis and pelvic adhesions by flowing backward of mensturational blood. Also it may cause decreasing fertility and secondary infection. We report a case of uterine didelphys with obstructed hemivagina and ipsilateral renal agenesis with a brief review of the literature.
박성철 ( Sung Chul Park ),김기완 ( Ki Wan Kim ),박윤기 ( Yoon Ki Park ) 대한주산의학회 2006 Perinatology Vol.17 No.3
임신 41주된 30세 초산부가 규칙적인 진통으로 입원하여 4도 산도열상 이외의 다른 합병증 없이 건강한 남아를 출산하였다. 분만 2시간 후 산모는 목의 통증을 호소하였으면 좌측 얼굴, 목 그리고 상부가슴에 약간의 부종이 생겼다. 흉부 엑스-선상 목에 약간의 피하기종이 보였으며 그 외 종격기종이나 기흉은 보이지 않았다. 산모는 대증요법으로 치료 받았으며 분만 후 6일째 아무런 합병증 없이퇴원하였다. 저자들은 질식 분만 후 4도 산도열상 이외의 다른 합병증 없이 생긴 드문 피하기종 1례를 경험하였기에 간단한 문헌고찰과 함께 보고하는 바이다. A 30-year-old primipara at 41 weeks gestation was admitted with regular labor pain and delivered a healthy male infant without complications except for a 4th degree tear of perineum. Two hours after delivery, she complained of sore throat and developed mild swelling of left side face, neck and upper chest. A chest radiography showed mild subcutaneous emphysema of neck. There was no pneumomediastinum and pneumothorax. She was managed conservatively and discharged without any complication at the 6th postpartum day. We report a rare case of subcutaneous emphysema with a brief review of literatures that presented shortly after vaginal delivery without complications except for a 4th degree perineal tear and resolved without special treatment.