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낮은 트리거 전압 기술을 이용한 MOSFET 기반 ESD 보호회로의 특성 비교에 관한 연구
정진우(Jin-Woo Jung),김상기(Sang-Gi Kim),구진근(Jin-Gun Koo),노태문,박건식(Kun-Sik Park),원종일(Jong-Il Won),조두형(Doo-Hyung Cho),유성욱(Sung-Wook Yoo),구용서(Yong-Seo Koo),박종문(Jong-Moon Park) 대한전자공학회 2016 대한전자공학회 학술대회 Vol.2016 No.11
Electrostatic discharge (ESD) damage has become the main reliability issue for deep-submicron CMOS integrated circuit. This paper presents comparisons of ESD protection circuits using low trigger techniques in a 0.13 um CMOS process, Transmission line pulse (TLP) and human body model (HBM) results support the findings presented in this paper.
협동학습 수업모형 적용을 통한 체육수업이 학업적 자기효능감과 학습성향에 미치는 영향
구봉진,조건상 이화여자대학교 교과교육연구소 2010 교과교육학연구 Vol.14 No.4
The purpose of this study was to empirically examine the effects of academic self-efficacy and learning inclination of in physical education classes through the application of the cooperative learning model. In order to achieve this purpose, 277 subjects were selected through a purposive sampling among students of C-elementary school in Gangwon-do. Academic self-efficacy and learning inclination were measured two times with a pretest, at STAD finished. The survey questionnaires were the academic self-efficacy test developed by Kim & Park (1999) and the questionnaire for perceived learning inclination developed by Vallerand & Bissonnette (1992) and standardized in the Korean language by Lee (2002). The statistical methods utilized in the study for analyzing the collected data were reliability analysis, descriptive statistics, paired t-test, correlate analysis, and multiple regression analysis, and from the results of this study, the following conclusions were drawn. First, academic self-efficacy and learning inclination are changed by the application of the cooperative learning model. Academic self-efficacy and learning inclination significantly increase each time. Second, academic self-efficacy of students through application of the cooperative learning model also influences learning inclination. 이 연구는 협동학습 수업모형을 초등체육수업에 적용하여 학업적 자기효능감과 학습성향에 어떠한 영향을 미치는 가에 대해서 규명하는데 연구의 목적이 있다. 이러한 목적을 달성하기 위한 연구대상은 강원도에 소재한 C초등학교 3, 4, 5학년에 재학중인 총 277명의 학생을 대상으로 협동학습모형을 통한 수업적용 전과 후 검사를 통해 자료를 수집하였다. 조사도구로 사용된 설문지는 학업적 자기효능감을 묻는 도구로 김아영과 박인영(1999)이 개발하여 타당성을 검증한 도구와 학습성향을 묻는 도구로서 Vallerand와 Bissonnette(1992)가 개발하고 임은미(1998)가 번안한 설문지를 사용하였다. 이에 따른 자료처리 방법으로는 빈도분석과 종속 t-test 그리고 다중회귀분석방법을 이용하였다. 이러한 따른 연구방법을 통해 얻은 결론은 다음과 같다. 첫째, 협동학습을 통한 수업 전ㆍ후 학생들의 학업적 자기효능감과 학습성향에는 차이가 있다. 학생들이 인지하는 학업적 자기효능감과 학습성향은 협동학습 수업전에 비해 STAD를 통한 협동학습 후에 더 긍정적이었다. 둘째, 학업적 자기효능감은 인지된 학습성향에 영향을 미친다. 학업적 자기효능감은 학습성향은 상관관계가 있으며, 학업적 자기효능감은 교사 선호도에 과제난이도에서만 부분적으로 영향을 미치고 있었으며, 교과선호도와 학습태도에서는 전반적으로 정적인 영향을 미치고 있었다.
Undifferentiated endometrial sarcoma mimicking submucosal myoma: A case report
( Gun Sik Park ),( Hyun Sik Youm ),( Soo Jin Song ),( Byeung Jum Kim ),( Mi Eun Jung ),( Sang Chill Kwon ),( Sang Kook Kim ),( Yu Kyung Cho ),( Ja Sung Koo ),( Hwal Woong Kim ),( Hwa Sook Moon ) 대한산부인과학회 2012 대한산부인과학회 학술대회 Vol.98 No.-
Endometrial stromal tumors are the second most common uterine sarcomas. They are divided into three types; endometrial stromal nodule, endometrial stromal sarcoma (ESS), and undifferentiated endometrial sarcoma (UES). UES is much less common than ESS. And it has a much more aggressive clinical course and poorer prognosis than ESS. Case: A 47-year-old woman presented to our hospital with a 4-month history of irregular vaginal bleeding. TVUS revealed a vascularized mass mimicking submucosal myoma in the uterine endometrial cavity. MRI was performed. A 5.9 × 5.1 × 4.8 cm submucosal mass filled up the endometrial cavity. Hysterocopy examination confirmed the protruding mass at the lower portion of the endometrial cavity. The frozen section of the hysteroscopy was reported as malignancy. Subsequently, the patient underwent laparoscopic hysterectomy with bilateral salpingo-oophorectomy and bilateral pelvic lymph node dissection. There was no cancerous involvement in 19 dissected lymph nodes. The results of immunohistochemical stainings were positive for vimentin and CD56, a few positive for CD68, and negative for smooth muscle actin, desmin, CD10, CD34, pan-cytokeratin, HMB-45, S-100 protein, chromogranins and synaptophysin. Based on these histomorphologic findings, the diagnosis of UES was made. The patient was referred to an oncological center for chemotherapy and radiation therapy. Conclusion: It is important to establish a proper classification of endometrial stromal tumors by cytologic and immunohistochemical findings becase of different clinical course and prognosis.
( Hyun Gun Kim ),( Kyu Chan Huh ),( Hoon Sup Koo ),( Seong-Eun Kim ),( Jin-Oh Kim ),( Tae Il Kim ),( Hyun-Soo Kim ),( Seung-Jae Myung ),( Dong Il Park ),( Jeong Eun Shin ),( Dong-Hoon Yang ),( Suck-Ho 대한소화기학회 2015 Gut and Liver Vol.9 No.4
Background/Aims: We investigated whether sodium picosulfate with magnesium citrate (SPMC) plus bisacodyl compares favorably with conventional polyethylene glycol (PEG) with respect to bowel cleansing adequacy, compliance, and safety. Methods: We performed a multicenter, prospective, single-blinded study in outpatients undergoing daytime colonoscopies. Patients were randomized into a split preparation SPMC/bisacodyl group and a conventional split PEG group. We compared preparation adequacy using the Boston bowel preparation scale (BBPS), ease of use using a modified Likert scale (LS), compliance/satisfaction level using a visual analogue scale (VAS), and safety by monitoring adverse events during the colonoscopy between the two groups. Results: A total of 365 patients were evaluated by intention to treat (ITT) analysis, and 319 were evaluated by per protocol (PP) population analysis (153 for SPMC/bisacodyl, 166 for PEG). The mean total BBPS score was not different between the two groups in both the ITT and PP analyses (p>0.05). The mean VAS score for satisfaction and LS score for the ease of use were higher in the SPMC/bisacodyl group (p<0.001). The adverse event rate was lower in the SPMC/bisacodyl group than in the PEG group (p<0.05). Conclusions: The SPMC/bisacodyl treatment was comparable to conventional PEG with respect to bowel preparation adequacy and supe-rior with respect to compliance, satisfaction, and safety.(Gut Liver 2015;9:494-501)
구인혁(Koo, In-Hyuk),신이철(Shin, Yi-Chul),권영진(Kwon, Young-Jin),남동군(Nam, Dong-Gun),임길언(Yoshihiko, Hayashi) 한국화재소방학회 2009 한국화재소방학회 학술대회 논문집 Vol.2009 No.춘계
우리나라는 건축물 화재 및 지진으로 인한 화재의 위험성이 증가해 가면서 시가지 화재에 대한 위험성이 점차 늘어나고 있다. 하지만 이에 대한 대응책은 미비한 실정이다. 반면 일본의 경우는 과거의 화재사례를 토대로 시가지 화재에 대한 대응책 및 시뮬레이션 개발이 수행되었으며 이를 통해 각 지구의 화재위험성을 평가하여 대책을 마련하고 있다. 본 연구에서는 이러한 시가지 화재 시뮬레이션의 화염전파 모델에 관하여 소개함으로서 향후국내의 시뮬레이션 개발에 있어서 기본적인 방향을 제시하고자 하였다.