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導入 機器의 效率的 活用을 위한 敎授-學習 敎材의 開發 : 8 個 學科 共同 硏究
李昌甲,孟琦錫,李載元,朴萬植,廷吉煥,金鍾悟,朴景采,李英浩,李東周,邕章祐,柳盛淵,趙澤東,姜理錫,李殷雄,李興浩,金健中,韓相玉,金良模,張錫明,朴俊灝,洪鳳植,金太均,金再韓,宋海永,盧載星 충남대학교 공업교육연구소 1982 論文集 Vol.5 No.1
In this study, through the combined effort and collaboration of 8 engineering education departments, teaching-learning processes and models were reviewed, and printed and bound student manuals developed on 120 different tasks and subjects. Audio-visual supportive material, already in use in laboratories, was added to form a complete teaching-learning package. In addition to promoting the maximum use of the newly acquired equipment, this study will also contribute to the development of laboratory practice, the in-service training of technical high schools teachers and help in the development of their own instructional program.
이사영(SY Lee),오봉환(BH OH),김봉희(BH Kim),박현준(HJ Park),김길동(GD Kim),이승학(SH Lee),이미영(MY Lee) 전력전자학회 1998 전력전자학술대회 논문집 Vol.- No.-
This paper presents PWM method which modulates two third period only during one cycle of power converter. This method is compared with the convention! sinusoidal modulation method applying to the power converter with large capacity necessitating low switching frequency. The presented modulation method enables to reduce power semiconductor rating, minimize switching loss, and improve the current wave form.<br/> <br/>
만삭임신에서 태아 파이브로넥틴 및 질초음파를 이용한 분만의 예측
이선영(SY Lee),이영(Y Lee),황지영(JY Hwang),정대영(DY Chung),이종승(JS Lee),신종철(JC Shin),김창이(CY Kim),김수평(SP Kim) 대한산부인과학회 1998 Obstetrics & Gynecology Science Vol.41 No.8
Objective: To predict the onset of labor in term pregnancy, we performed digital examination of cervix, transvaginal ultrasonographic evaluation of the uterine cervix, and fetal fibronectin in cervicovaginal secretions in women after 37 complete weeks of gestation. Study design: Total 67 prmiparous or multiparous women were divided into two groups based on the duration between evaluation and onset of labor; Group 1 (n=46), within seven days; Group 2 (n=21), beyond seven days, retrospectively. Bishop score was assessed by digital vaginal examination. Then biometric analysis of uterine cervix (endocervical length, presence of funneling, funnel length, funnel width and cervical index) was done by trasvaginal ultrasonography. The cervicovaginal fetal fibronectin was measured quantitatively by fetal fibronectin immunoassay (Adeza Biomedical, U.S.A.). The efficacy of these method were analyzed with Pearson chi-square test, receiver-operator characteristic curve, and multiple logistic regression test. Results: 1. There were no significant differences in maternal age, parity, gestational age and birth weight between two groups. 2. Group 1 showed significantly shorter endocervical length (Group 1: Group 2=2.24±0.86 cm: 2.78±0.66 cm, p=0.012), higher value of cervical index (1.08±0.86: 0.55±0.25, p=0.008) and higher level of fetal fibronectin( 103.23±14 ng/ml: 9.28 ±36 ng/ml, p=0.003) than those of group 2. 3. Receiver-operator characteristic curve analysis showed that a level of fetal fibronectin in cervicovaginal secretion ≥60 ng/ml, cervical index ≥0.82 and endocervical length <2.51 cm had the diagnostic performance in predicting group 1. Fetal fibronectin level in cervicovaginal secretion ≥60 ng/ml showed the highst diagnostic index in predicting the onset of labor within 7 days (p=0.0003, odds ratio=104.67). Conclusion: From these results, the assay of fetal fibronectin in cervicovaginal secretions is more accurate than ultrasonographic examination of the uterine cervix in the prediction of the onset of term labor and the fetal fibronectin assay may improve the diagnostic efficiency to identify a subgroup of patients who may require aggressive treatment.
자궁외임신 환자의 치료에 있어서 골반경수술과 개복술의 비교 연구
이도훈(DH Lee),김상용(SY Kim),이달경(DK Lee),이승기(SK Lee),김정욱(JW Kim),이의진(EJ Lee) 대한산부인과학회 1995 Obstetrics & Gynecology Science Vol.38 No.6
Recently, pelviscopic surgery trends to increase in world-wide in department of gynecology. Especially, in treatment of ectopic pregnancy, pelviscopic surgery is as effective and safe as treatment with laparotomy and has the advantage of decrease in hospital stay, cost and delay in return to normal activity and of cosmetic effect. To evaluate the efficacy of pelviscopic surgery in ectopic pregnancy, we have reviewed 137 patients treated by pelviscopic surgery and laparotomy from January 1993 to September 1994. The results were as follows. 1. A total of 137 patients were randomized to either pelviscopic surgery(N=95, 69.34%) or laparotomy(N=42, 30.66%). 2. There were no significant differences between the pelviscopic surgery and laparotomy groups in age, weight, parity, gestational age, past history and chief complaint, hematocreits, blood pressure but the estimated blood loss was significantly (p<0.01) lower in patients undergoing pelviscopic surgery. 3. In all ectopic gestaions, the most common site is ampullar portion(83.21%) and the most common operative procedure is salpingectomy(90.51%). 4. The mean operating time was not significant between pelviscopic surgery (60.9 +-21.3mins) and laparotomy(62.8+-20.9). But the length of hospital stay was significantly (p<0.01) shorter after pelviscopic surgery(3.6+-1.0 days) than after laparotomy (7.0+-0.7 days). 5. There were no intraoperative complications in the both groups.
이은희(EH Lee),양수진(SJ Yang),이재규(JG Lee),김창원(CW Kim),유상영(SY Ryu),김종훈(JH Kim),김병기(BG Kim),박상윤(SY Park),이의돈(ED Rhee),이경희(KH Lee) 대한산부인과학회 1998 Obstetrics & Gynecology Science Vol.41 No.10
Objective: Uterine sarcomas are rare tumors of mesodermal origan and comprise 2∼6% if uterine malignancy. They are the most malignant group of gynecologic tumors and present intriguing problems in regard to diagnosis, and management. The purpose of this study was to investigate the clinicopathologic findings and outcome of patients with uterine sarcoma. Methods: From Jan. 1985 to Dec. 1997, 40 patients with histologically proven uterine sarcoma at Korea Cancer Center Hospital were evaluated for their clinical profiles and survival retrospectively. Results: Malignant mixed m llerian tumor [MMMT] was the most common uterine sarcoma [20/40 cases, 50%], followed by leiomyosarcoma [LMS] [12/40 cases, 30%] and endometrial stromal sarcoma [ESS] [8/40 cases, 20%]. Mean age of these patients was 52 years, and the most common presenting symptom was abnormal vaginal bleeding. There were no statistical differences in stage and presenting symptom, but MMMT was prevalent in older age than LMS and ESS. Most of the patients were treated by surgery followed by post-operative adjuvant chemotherapy or radiation [57.5%], but nine patients [30%] were treated with surgery alone. The overall 5-year survival rate was 37.9%, and MMMT showed worse prognosis than LMS or ESS [17.7%, 52.3% and 75% respectively] [p<0.01]. Age and stage were significant prognostic factors, and adjuvant treatment did not affect the survival of patients. Conclusion: Uterine sarcomas are aggressive tumors with a poor prognosis. The role of adjuvant chemotherapy or radiation still remains undeterimined and further large scaled multicenter studies are needed.
김진수(JS Kim),김상엽(SY Kim),이해혁(HH Lee),이명환(MH Lee),문원실(WS Moon),이석민(SM Lee),구도형(DH Koo),이효환(HH Lee),이권해(KH Lee) 대한산부인과학회 1998 Obstetrics & Gynecology Science Vol.41 No.8
Purpose: We have evaluated the characteristics of perimenopausal women in Korea, by the age of menopause, climacteric symptoms, bone mineral density, biochemical bone markers and lipid profiles. Methods: There is 233 perimenopausal women who are divided into four groups (Group Ⅰ, Group Ⅱ, Group Ⅲ, Group Ⅳ) by age. The age distributions of Group Ⅰare below 50 years old. Those of Group Ⅱ, Ⅲ, Ⅳ are 51∼55 years old, 56∼60 years old and above 61 years old. We asked them for their climacteric symptoms and we checked them for the bone mineral density, biochemical bone markers and lipid profiles. Results : 1) The mean age of menopause is 48.3±4.1 years old. 2) The common symptoms of the Korean perimenopausal women were backache, arthralgia, hot flashing and urinary frequency in order of frequency. 3) The bone mineral densities of climacteric women were significantly decreased by increasing age. 4) The serum alkaline phosphatase among biochemical markers of bone turnover was significantly increasing state by increasing age. 5) The levels of serum total cholesterol, LDL-cholesterol and triglycerides were increasing tendency, but HDL-cholesterol was decreasing tendency by increasing age. 6) There are no variation by increasing age in the serum total calcium and serum uric acid. Conclusions: Increasing age had a great effect on bone mineral loss and lipid profiles in the climacteric women.
한국형 자궁경부 촬영진 ( New Cervicography ) , 세포검사 그리고 HPV-DNA 검사를 이용한 새로운 자궁경부암 검진 모델 ( Model ) 개발
김승조(SJ Kim),박찬규(CK Park),이효표(HP Lee),남궁성은(SE Namkoong),강순범(SB Kang),서호석(HS Saw),이재관(JK Lee),김수녕(SN Kim),김재원(JW Kim),배석년(SN Bae),김찬주(CJ Kim),이근호(KH Lee),이선영(SY Lee),김인호(IH Kim),이찬(C Lee),이정노(JN Lee) 대한산부인과학회 2001 Obstetrics & Gynecology Science Vol.44 No.5
Objective : The false negative rate of conventional cytology is reported to range from 18 to 45%. It is necessary to develop more effective screening strategies that would ideally be more accurate than conventional cytology. This study is designed to investigate the potential of conventional cytology, cervicography, HPV-DNA testing and their combinations as primary screening techniques for cervical neoplasia. The purpose of this project is to develop the models and guidelines for screening tools of cervical cancer of the uterus by evaluating sensitivity, specificity and cost-effectiveness of all the screening methods. Study design : We conducted a screening of random sample of women who visited the department of OB-Gyn. of five different major university hospitals such as Catholic University Hospital, Korea University Hospital, Seoul National University Hospital, Yeonsei University Hospital and Pochon CHA University Bundang CHA Hospital, from May 1, 1996 to April 30, 1999. In a cohort women with an age range of 20 to 70 who underwent routine cytologic screening at Catholic University, Hospital Bundang CHA General Hospital and local clinics from April 1, 1996 to Decomber 31, 2000. cervicography (n=417,125) and testing for HPV-DNA (n=1,347) by the hybrid capture assay were studied for the ability of the cervical cancer screeuing. A new cervicography system with Kim's classification which was developed by Prof. Kim Seung Jo as an adjunctive method for the cervical cancer screening was applied in this cohort study. And then, accuracy, effectivencess, cost-effectiveness of the single or combined screening method were analysed. Result : Sensitivity and specificity of Pap smear were ranged from 55.6% to 83.1% and 72.8% to 88.3% respectively. The combination of Pap smear and cervicography had sensitivity from 89.7% to 98.6%, specificity from 68.2% to 93.2%. With combination of Pap smear, HPV DNA test and cervicography, sensitivity became also highest accuracy among all screening methods from 92.8% to 98.8%. Considering medical charges for diagnosis and social cost occurred by false positive and false negative results, the most cost-effective diagnostic modality was thought to be the combination of Pap smear and cervicography(91,433 won). In patients who were diagnosed as LSIL, colposcopic examination confirmed progression to high grade intraepithelial lesion(HSIL) in 10.7% patients, persistence of LSIL in 55% patients during the 3 year follow-up period. Accuracy of the screening for cervical cancer and CIN can significantly be improved by cytology with new cervicography rather than cytology alone. We concluded that cervicography can be important adjunctive tests for cervical cytology, improving the effectiveness of cervical screening by allowing a more sensitive detection of cervical neoplasia.